TextView.java revision f1f409a389d67dedc4847f802df402e78dd01353
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.widget; 18 19import com.android.internal.util.FastMath; 20import com.android.internal.widget.EditableInputConnection; 21 22import org.xmlpull.v1.XmlPullParserException; 23 24import android.R; 25import android.content.ClipData; 26import android.content.ClipData.Item; 27import android.content.ClipboardManager; 28import android.content.Context; 29import android.content.pm.PackageManager; 30import android.content.res.ColorStateList; 31import android.content.res.Resources; 32import android.content.res.TypedArray; 33import android.content.res.XmlResourceParser; 34import android.graphics.Canvas; 35import android.graphics.Color; 36import android.graphics.Paint; 37import android.graphics.Path; 38import android.graphics.Rect; 39import android.graphics.RectF; 40import android.graphics.Typeface; 41import android.graphics.drawable.Drawable; 42import android.inputmethodservice.ExtractEditText; 43import android.net.Uri; 44import android.os.Bundle; 45import android.os.Handler; 46import android.os.Message; 47import android.os.Parcel; 48import android.os.Parcelable; 49import android.os.ResultReceiver; 50import android.os.SystemClock; 51import android.text.BoringLayout; 52import android.text.DynamicLayout; 53import android.text.Editable; 54import android.text.GetChars; 55import android.text.GraphicsOperations; 56import android.text.InputFilter; 57import android.text.InputType; 58import android.text.Layout; 59import android.text.ParcelableSpan; 60import android.text.Selection; 61import android.text.SpanWatcher; 62import android.text.Spannable; 63import android.text.SpannableString; 64import android.text.Spanned; 65import android.text.SpannedString; 66import android.text.StaticLayout; 67import android.text.TextPaint; 68import android.text.TextUtils; 69import android.text.TextWatcher; 70import android.text.method.ArrowKeyMovementMethod; 71import android.text.method.DateKeyListener; 72import android.text.method.DateTimeKeyListener; 73import android.text.method.DialerKeyListener; 74import android.text.method.DigitsKeyListener; 75import android.text.method.KeyListener; 76import android.text.method.LinkMovementMethod; 77import android.text.method.MetaKeyKeyListener; 78import android.text.method.MovementMethod; 79import android.text.method.PasswordTransformationMethod; 80import android.text.method.SingleLineTransformationMethod; 81import android.text.method.TextKeyListener; 82import android.text.method.TimeKeyListener; 83import android.text.method.TransformationMethod; 84import android.text.style.ClickableSpan; 85import android.text.style.ParagraphStyle; 86import android.text.style.URLSpan; 87import android.text.style.UpdateAppearance; 88import android.text.util.Linkify; 89import android.util.AttributeSet; 90import android.util.FloatMath; 91import android.util.Log; 92import android.util.TypedValue; 93import android.view.ActionMode; 94import android.view.ActionMode.Callback; 95import android.view.ContextMenu; 96import android.view.DragEvent; 97import android.view.Gravity; 98import android.view.HapticFeedbackConstants; 99import android.view.KeyCharacterMap; 100import android.view.KeyEvent; 101import android.view.LayoutInflater; 102import android.view.Menu; 103import android.view.MenuItem; 104import android.view.MotionEvent; 105import android.view.View; 106import android.view.ViewConfiguration; 107import android.view.ViewDebug; 108import android.view.ViewGroup; 109import android.view.ViewGroup.LayoutParams; 110import android.view.ViewParent; 111import android.view.ViewRoot; 112import android.view.ViewTreeObserver; 113import android.view.WindowManager; 114import android.view.accessibility.AccessibilityEvent; 115import android.view.accessibility.AccessibilityManager; 116import android.view.animation.AnimationUtils; 117import android.view.inputmethod.BaseInputConnection; 118import android.view.inputmethod.CompletionInfo; 119import android.view.inputmethod.CorrectionInfo; 120import android.view.inputmethod.EditorInfo; 121import android.view.inputmethod.ExtractedText; 122import android.view.inputmethod.ExtractedTextRequest; 123import android.view.inputmethod.InputConnection; 124import android.view.inputmethod.InputMethodManager; 125import android.widget.RemoteViews.RemoteView; 126 127import java.io.IOException; 128import java.lang.ref.WeakReference; 129import java.util.ArrayList; 130 131/** 132 * Displays text to the user and optionally allows them to edit it. A TextView 133 * is a complete text editor, however the basic class is configured to not 134 * allow editing; see {@link EditText} for a subclass that configures the text 135 * view for editing. 136 * 137 * <p> 138 * <b>XML attributes</b> 139 * <p> 140 * See {@link android.R.styleable#TextView TextView Attributes}, 141 * {@link android.R.styleable#View View Attributes} 142 * 143 * @attr ref android.R.styleable#TextView_text 144 * @attr ref android.R.styleable#TextView_bufferType 145 * @attr ref android.R.styleable#TextView_hint 146 * @attr ref android.R.styleable#TextView_textColor 147 * @attr ref android.R.styleable#TextView_textColorHighlight 148 * @attr ref android.R.styleable#TextView_textColorHint 149 * @attr ref android.R.styleable#TextView_textAppearance 150 * @attr ref android.R.styleable#TextView_textColorLink 151 * @attr ref android.R.styleable#TextView_textSize 152 * @attr ref android.R.styleable#TextView_textScaleX 153 * @attr ref android.R.styleable#TextView_typeface 154 * @attr ref android.R.styleable#TextView_textStyle 155 * @attr ref android.R.styleable#TextView_cursorVisible 156 * @attr ref android.R.styleable#TextView_maxLines 157 * @attr ref android.R.styleable#TextView_maxHeight 158 * @attr ref android.R.styleable#TextView_lines 159 * @attr ref android.R.styleable#TextView_height 160 * @attr ref android.R.styleable#TextView_minLines 161 * @attr ref android.R.styleable#TextView_minHeight 162 * @attr ref android.R.styleable#TextView_maxEms 163 * @attr ref android.R.styleable#TextView_maxWidth 164 * @attr ref android.R.styleable#TextView_ems 165 * @attr ref android.R.styleable#TextView_width 166 * @attr ref android.R.styleable#TextView_minEms 167 * @attr ref android.R.styleable#TextView_minWidth 168 * @attr ref android.R.styleable#TextView_gravity 169 * @attr ref android.R.styleable#TextView_scrollHorizontally 170 * @attr ref android.R.styleable#TextView_password 171 * @attr ref android.R.styleable#TextView_singleLine 172 * @attr ref android.R.styleable#TextView_selectAllOnFocus 173 * @attr ref android.R.styleable#TextView_includeFontPadding 174 * @attr ref android.R.styleable#TextView_maxLength 175 * @attr ref android.R.styleable#TextView_shadowColor 176 * @attr ref android.R.styleable#TextView_shadowDx 177 * @attr ref android.R.styleable#TextView_shadowDy 178 * @attr ref android.R.styleable#TextView_shadowRadius 179 * @attr ref android.R.styleable#TextView_autoLink 180 * @attr ref android.R.styleable#TextView_linksClickable 181 * @attr ref android.R.styleable#TextView_numeric 182 * @attr ref android.R.styleable#TextView_digits 183 * @attr ref android.R.styleable#TextView_phoneNumber 184 * @attr ref android.R.styleable#TextView_inputMethod 185 * @attr ref android.R.styleable#TextView_capitalize 186 * @attr ref android.R.styleable#TextView_autoText 187 * @attr ref android.R.styleable#TextView_editable 188 * @attr ref android.R.styleable#TextView_freezesText 189 * @attr ref android.R.styleable#TextView_ellipsize 190 * @attr ref android.R.styleable#TextView_drawableTop 191 * @attr ref android.R.styleable#TextView_drawableBottom 192 * @attr ref android.R.styleable#TextView_drawableRight 193 * @attr ref android.R.styleable#TextView_drawableLeft 194 * @attr ref android.R.styleable#TextView_drawablePadding 195 * @attr ref android.R.styleable#TextView_lineSpacingExtra 196 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier 197 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit 198 * @attr ref android.R.styleable#TextView_inputType 199 * @attr ref android.R.styleable#TextView_imeOptions 200 * @attr ref android.R.styleable#TextView_privateImeOptions 201 * @attr ref android.R.styleable#TextView_imeActionLabel 202 * @attr ref android.R.styleable#TextView_imeActionId 203 * @attr ref android.R.styleable#TextView_editorExtras 204 */ 205@RemoteView 206public class TextView extends View implements ViewTreeObserver.OnPreDrawListener { 207 static final String LOG_TAG = "TextView"; 208 static final boolean DEBUG_EXTRACT = false; 209 210 private static final int PRIORITY = 100; 211 private int mCurrentAlpha = 255; 212 213 final int[] mTempCoords = new int[2]; 214 Rect mTempRect; 215 216 private ColorStateList mTextColor; 217 private int mCurTextColor; 218 private ColorStateList mHintTextColor; 219 private ColorStateList mLinkTextColor; 220 private int mCurHintTextColor; 221 private boolean mFreezesText; 222 private boolean mFrozenWithFocus; 223 private boolean mTemporaryDetach; 224 private boolean mDispatchTemporaryDetach; 225 226 private boolean mDiscardNextActionUp = false; 227 private boolean mIgnoreActionUpEvent = false; 228 229 private Editable.Factory mEditableFactory = Editable.Factory.getInstance(); 230 private Spannable.Factory mSpannableFactory = Spannable.Factory.getInstance(); 231 232 private float mShadowRadius, mShadowDx, mShadowDy; 233 234 private static final int PREDRAW_NOT_REGISTERED = 0; 235 private static final int PREDRAW_PENDING = 1; 236 private static final int PREDRAW_DONE = 2; 237 private int mPreDrawState = PREDRAW_NOT_REGISTERED; 238 239 private TextUtils.TruncateAt mEllipsize = null; 240 241 // Enum for the "typeface" XML parameter. 242 // TODO: How can we get this from the XML instead of hardcoding it here? 243 private static final int SANS = 1; 244 private static final int SERIF = 2; 245 private static final int MONOSPACE = 3; 246 247 // Bitfield for the "numeric" XML parameter. 248 // TODO: How can we get this from the XML instead of hardcoding it here? 249 private static final int SIGNED = 2; 250 private static final int DECIMAL = 4; 251 252 class Drawables { 253 final Rect mCompoundRect = new Rect(); 254 Drawable mDrawableTop, mDrawableBottom, mDrawableLeft, mDrawableRight; 255 int mDrawableSizeTop, mDrawableSizeBottom, mDrawableSizeLeft, mDrawableSizeRight; 256 int mDrawableWidthTop, mDrawableWidthBottom, mDrawableHeightLeft, mDrawableHeightRight; 257 int mDrawablePadding; 258 } 259 private Drawables mDrawables; 260 261 private CharSequence mError; 262 private boolean mErrorWasChanged; 263 private ErrorPopup mPopup; 264 /** 265 * This flag is set if the TextView tries to display an error before it 266 * is attached to the window (so its position is still unknown). 267 * It causes the error to be shown later, when onAttachedToWindow() 268 * is called. 269 */ 270 private boolean mShowErrorAfterAttach; 271 272 private CharWrapper mCharWrapper = null; 273 274 private boolean mSelectionMoved = false; 275 private boolean mTouchFocusSelected = false; 276 277 private Marquee mMarquee; 278 private boolean mRestartMarquee; 279 280 private int mMarqueeRepeatLimit = 3; 281 282 class InputContentType { 283 int imeOptions = EditorInfo.IME_NULL; 284 String privateImeOptions; 285 CharSequence imeActionLabel; 286 int imeActionId; 287 Bundle extras; 288 OnEditorActionListener onEditorActionListener; 289 boolean enterDown; 290 } 291 InputContentType mInputContentType; 292 293 class InputMethodState { 294 Rect mCursorRectInWindow = new Rect(); 295 RectF mTmpRectF = new RectF(); 296 float[] mTmpOffset = new float[2]; 297 ExtractedTextRequest mExtracting; 298 final ExtractedText mTmpExtracted = new ExtractedText(); 299 int mBatchEditNesting; 300 boolean mCursorChanged; 301 boolean mSelectionModeChanged; 302 boolean mContentChanged; 303 int mChangedStart, mChangedEnd, mChangedDelta; 304 } 305 InputMethodState mInputMethodState; 306 307 int mTextSelectHandleLeftRes; 308 int mTextSelectHandleRightRes; 309 int mTextSelectHandleRes; 310 int mTextEditPasteWindowLayout, mTextEditSidePasteWindowLayout; 311 int mTextEditNoPasteWindowLayout, mTextEditSideNoPasteWindowLayout; 312 313 Drawable mSelectHandleLeft; 314 Drawable mSelectHandleRight; 315 Drawable mSelectHandleCenter; 316 317 private int mLastDownPositionX, mLastDownPositionY; 318 private Callback mCustomSelectionActionModeCallback; 319 320 private final int mSquaredTouchSlopDistance; 321 // Set when this TextView gained focus with some text selected. Will start selection mode. 322 private boolean mCreatedWithASelection = false; 323 324 /* 325 * Kick-start the font cache for the zygote process (to pay the cost of 326 * initializing freetype for our default font only once). 327 */ 328 static { 329 Paint p = new Paint(); 330 p.setAntiAlias(true); 331 // We don't care about the result, just the side-effect of measuring. 332 p.measureText("H"); 333 } 334 335 /** 336 * Interface definition for a callback to be invoked when an action is 337 * performed on the editor. 338 */ 339 public interface OnEditorActionListener { 340 /** 341 * Called when an action is being performed. 342 * 343 * @param v The view that was clicked. 344 * @param actionId Identifier of the action. This will be either the 345 * identifier you supplied, or {@link EditorInfo#IME_NULL 346 * EditorInfo.IME_NULL} if being called due to the enter key 347 * being pressed. 348 * @param event If triggered by an enter key, this is the event; 349 * otherwise, this is null. 350 * @return Return true if you have consumed the action, else false. 351 */ 352 boolean onEditorAction(TextView v, int actionId, KeyEvent event); 353 } 354 355 public TextView(Context context) { 356 this(context, null); 357 } 358 359 public TextView(Context context, 360 AttributeSet attrs) { 361 this(context, attrs, com.android.internal.R.attr.textViewStyle); 362 } 363 364 @SuppressWarnings("deprecation") 365 public TextView(Context context, 366 AttributeSet attrs, 367 int defStyle) { 368 super(context, attrs, defStyle); 369 mText = ""; 370 371 mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG); 372 mTextPaint.density = getResources().getDisplayMetrics().density; 373 mTextPaint.setCompatibilityScaling( 374 getResources().getCompatibilityInfo().applicationScale); 375 376 // If we get the paint from the skin, we should set it to left, since 377 // the layout always wants it to be left. 378 // mTextPaint.setTextAlign(Paint.Align.LEFT); 379 380 mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 381 mHighlightPaint.setCompatibilityScaling( 382 getResources().getCompatibilityInfo().applicationScale); 383 384 mMovement = getDefaultMovementMethod(); 385 mTransformation = null; 386 387 TypedArray a = 388 context.obtainStyledAttributes( 389 attrs, com.android.internal.R.styleable.TextView, defStyle, 0); 390 391 int textColorHighlight = 0; 392 ColorStateList textColor = null; 393 ColorStateList textColorHint = null; 394 ColorStateList textColorLink = null; 395 int textSize = 15; 396 int typefaceIndex = -1; 397 int styleIndex = -1; 398 399 /* 400 * Look the appearance up without checking first if it exists because 401 * almost every TextView has one and it greatly simplifies the logic 402 * to be able to parse the appearance first and then let specific tags 403 * for this View override it. 404 */ 405 TypedArray appearance = null; 406 int ap = a.getResourceId(com.android.internal.R.styleable.TextView_textAppearance, -1); 407 if (ap != -1) { 408 appearance = context.obtainStyledAttributes(ap, 409 com.android.internal.R.styleable. 410 TextAppearance); 411 } 412 if (appearance != null) { 413 int n = appearance.getIndexCount(); 414 for (int i = 0; i < n; i++) { 415 int attr = appearance.getIndex(i); 416 417 switch (attr) { 418 case com.android.internal.R.styleable.TextAppearance_textColorHighlight: 419 textColorHighlight = appearance.getColor(attr, textColorHighlight); 420 break; 421 422 case com.android.internal.R.styleable.TextAppearance_textColor: 423 textColor = appearance.getColorStateList(attr); 424 break; 425 426 case com.android.internal.R.styleable.TextAppearance_textColorHint: 427 textColorHint = appearance.getColorStateList(attr); 428 break; 429 430 case com.android.internal.R.styleable.TextAppearance_textColorLink: 431 textColorLink = appearance.getColorStateList(attr); 432 break; 433 434 case com.android.internal.R.styleable.TextAppearance_textSize: 435 textSize = appearance.getDimensionPixelSize(attr, textSize); 436 break; 437 438 case com.android.internal.R.styleable.TextAppearance_typeface: 439 typefaceIndex = appearance.getInt(attr, -1); 440 break; 441 442 case com.android.internal.R.styleable.TextAppearance_textStyle: 443 styleIndex = appearance.getInt(attr, -1); 444 break; 445 } 446 } 447 448 appearance.recycle(); 449 } 450 451 boolean editable = getDefaultEditable(); 452 CharSequence inputMethod = null; 453 int numeric = 0; 454 CharSequence digits = null; 455 boolean phone = false; 456 boolean autotext = false; 457 int autocap = -1; 458 int buffertype = 0; 459 boolean selectallonfocus = false; 460 Drawable drawableLeft = null, drawableTop = null, drawableRight = null, 461 drawableBottom = null; 462 int drawablePadding = 0; 463 int ellipsize = -1; 464 boolean singleLine = false; 465 int maxlength = -1; 466 CharSequence text = ""; 467 CharSequence hint = null; 468 int shadowcolor = 0; 469 float dx = 0, dy = 0, r = 0; 470 boolean password = false; 471 int inputType = EditorInfo.TYPE_NULL; 472 473 int n = a.getIndexCount(); 474 for (int i = 0; i < n; i++) { 475 int attr = a.getIndex(i); 476 477 switch (attr) { 478 case com.android.internal.R.styleable.TextView_editable: 479 editable = a.getBoolean(attr, editable); 480 break; 481 482 case com.android.internal.R.styleable.TextView_inputMethod: 483 inputMethod = a.getText(attr); 484 break; 485 486 case com.android.internal.R.styleable.TextView_numeric: 487 numeric = a.getInt(attr, numeric); 488 break; 489 490 case com.android.internal.R.styleable.TextView_digits: 491 digits = a.getText(attr); 492 break; 493 494 case com.android.internal.R.styleable.TextView_phoneNumber: 495 phone = a.getBoolean(attr, phone); 496 break; 497 498 case com.android.internal.R.styleable.TextView_autoText: 499 autotext = a.getBoolean(attr, autotext); 500 break; 501 502 case com.android.internal.R.styleable.TextView_capitalize: 503 autocap = a.getInt(attr, autocap); 504 break; 505 506 case com.android.internal.R.styleable.TextView_bufferType: 507 buffertype = a.getInt(attr, buffertype); 508 break; 509 510 case com.android.internal.R.styleable.TextView_selectAllOnFocus: 511 selectallonfocus = a.getBoolean(attr, selectallonfocus); 512 break; 513 514 case com.android.internal.R.styleable.TextView_autoLink: 515 mAutoLinkMask = a.getInt(attr, 0); 516 break; 517 518 case com.android.internal.R.styleable.TextView_linksClickable: 519 mLinksClickable = a.getBoolean(attr, true); 520 break; 521 522 case com.android.internal.R.styleable.TextView_drawableLeft: 523 drawableLeft = a.getDrawable(attr); 524 break; 525 526 case com.android.internal.R.styleable.TextView_drawableTop: 527 drawableTop = a.getDrawable(attr); 528 break; 529 530 case com.android.internal.R.styleable.TextView_drawableRight: 531 drawableRight = a.getDrawable(attr); 532 break; 533 534 case com.android.internal.R.styleable.TextView_drawableBottom: 535 drawableBottom = a.getDrawable(attr); 536 break; 537 538 case com.android.internal.R.styleable.TextView_drawablePadding: 539 drawablePadding = a.getDimensionPixelSize(attr, drawablePadding); 540 break; 541 542 case com.android.internal.R.styleable.TextView_maxLines: 543 setMaxLines(a.getInt(attr, -1)); 544 break; 545 546 case com.android.internal.R.styleable.TextView_maxHeight: 547 setMaxHeight(a.getDimensionPixelSize(attr, -1)); 548 break; 549 550 case com.android.internal.R.styleable.TextView_lines: 551 setLines(a.getInt(attr, -1)); 552 break; 553 554 case com.android.internal.R.styleable.TextView_height: 555 setHeight(a.getDimensionPixelSize(attr, -1)); 556 break; 557 558 case com.android.internal.R.styleable.TextView_minLines: 559 setMinLines(a.getInt(attr, -1)); 560 break; 561 562 case com.android.internal.R.styleable.TextView_minHeight: 563 setMinHeight(a.getDimensionPixelSize(attr, -1)); 564 break; 565 566 case com.android.internal.R.styleable.TextView_maxEms: 567 setMaxEms(a.getInt(attr, -1)); 568 break; 569 570 case com.android.internal.R.styleable.TextView_maxWidth: 571 setMaxWidth(a.getDimensionPixelSize(attr, -1)); 572 break; 573 574 case com.android.internal.R.styleable.TextView_ems: 575 setEms(a.getInt(attr, -1)); 576 break; 577 578 case com.android.internal.R.styleable.TextView_width: 579 setWidth(a.getDimensionPixelSize(attr, -1)); 580 break; 581 582 case com.android.internal.R.styleable.TextView_minEms: 583 setMinEms(a.getInt(attr, -1)); 584 break; 585 586 case com.android.internal.R.styleable.TextView_minWidth: 587 setMinWidth(a.getDimensionPixelSize(attr, -1)); 588 break; 589 590 case com.android.internal.R.styleable.TextView_gravity: 591 setGravity(a.getInt(attr, -1)); 592 break; 593 594 case com.android.internal.R.styleable.TextView_hint: 595 hint = a.getText(attr); 596 break; 597 598 case com.android.internal.R.styleable.TextView_text: 599 text = a.getText(attr); 600 break; 601 602 case com.android.internal.R.styleable.TextView_scrollHorizontally: 603 if (a.getBoolean(attr, false)) { 604 setHorizontallyScrolling(true); 605 } 606 break; 607 608 case com.android.internal.R.styleable.TextView_singleLine: 609 singleLine = a.getBoolean(attr, singleLine); 610 break; 611 612 case com.android.internal.R.styleable.TextView_ellipsize: 613 ellipsize = a.getInt(attr, ellipsize); 614 break; 615 616 case com.android.internal.R.styleable.TextView_marqueeRepeatLimit: 617 setMarqueeRepeatLimit(a.getInt(attr, mMarqueeRepeatLimit)); 618 break; 619 620 case com.android.internal.R.styleable.TextView_includeFontPadding: 621 if (!a.getBoolean(attr, true)) { 622 setIncludeFontPadding(false); 623 } 624 break; 625 626 case com.android.internal.R.styleable.TextView_cursorVisible: 627 if (!a.getBoolean(attr, true)) { 628 setCursorVisible(false); 629 } 630 break; 631 632 case com.android.internal.R.styleable.TextView_maxLength: 633 maxlength = a.getInt(attr, -1); 634 break; 635 636 case com.android.internal.R.styleable.TextView_textScaleX: 637 setTextScaleX(a.getFloat(attr, 1.0f)); 638 break; 639 640 case com.android.internal.R.styleable.TextView_freezesText: 641 mFreezesText = a.getBoolean(attr, false); 642 break; 643 644 case com.android.internal.R.styleable.TextView_shadowColor: 645 shadowcolor = a.getInt(attr, 0); 646 break; 647 648 case com.android.internal.R.styleable.TextView_shadowDx: 649 dx = a.getFloat(attr, 0); 650 break; 651 652 case com.android.internal.R.styleable.TextView_shadowDy: 653 dy = a.getFloat(attr, 0); 654 break; 655 656 case com.android.internal.R.styleable.TextView_shadowRadius: 657 r = a.getFloat(attr, 0); 658 break; 659 660 case com.android.internal.R.styleable.TextView_enabled: 661 setEnabled(a.getBoolean(attr, isEnabled())); 662 break; 663 664 case com.android.internal.R.styleable.TextView_textColorHighlight: 665 textColorHighlight = a.getColor(attr, textColorHighlight); 666 break; 667 668 case com.android.internal.R.styleable.TextView_textColor: 669 textColor = a.getColorStateList(attr); 670 break; 671 672 case com.android.internal.R.styleable.TextView_textColorHint: 673 textColorHint = a.getColorStateList(attr); 674 break; 675 676 case com.android.internal.R.styleable.TextView_textColorLink: 677 textColorLink = a.getColorStateList(attr); 678 break; 679 680 case com.android.internal.R.styleable.TextView_textSize: 681 textSize = a.getDimensionPixelSize(attr, textSize); 682 break; 683 684 case com.android.internal.R.styleable.TextView_typeface: 685 typefaceIndex = a.getInt(attr, typefaceIndex); 686 break; 687 688 case com.android.internal.R.styleable.TextView_textStyle: 689 styleIndex = a.getInt(attr, styleIndex); 690 break; 691 692 case com.android.internal.R.styleable.TextView_password: 693 password = a.getBoolean(attr, password); 694 break; 695 696 case com.android.internal.R.styleable.TextView_lineSpacingExtra: 697 mSpacingAdd = a.getDimensionPixelSize(attr, (int) mSpacingAdd); 698 break; 699 700 case com.android.internal.R.styleable.TextView_lineSpacingMultiplier: 701 mSpacingMult = a.getFloat(attr, mSpacingMult); 702 break; 703 704 case com.android.internal.R.styleable.TextView_inputType: 705 inputType = a.getInt(attr, mInputType); 706 break; 707 708 case com.android.internal.R.styleable.TextView_imeOptions: 709 if (mInputContentType == null) { 710 mInputContentType = new InputContentType(); 711 } 712 mInputContentType.imeOptions = a.getInt(attr, 713 mInputContentType.imeOptions); 714 break; 715 716 case com.android.internal.R.styleable.TextView_imeActionLabel: 717 if (mInputContentType == null) { 718 mInputContentType = new InputContentType(); 719 } 720 mInputContentType.imeActionLabel = a.getText(attr); 721 break; 722 723 case com.android.internal.R.styleable.TextView_imeActionId: 724 if (mInputContentType == null) { 725 mInputContentType = new InputContentType(); 726 } 727 mInputContentType.imeActionId = a.getInt(attr, 728 mInputContentType.imeActionId); 729 break; 730 731 case com.android.internal.R.styleable.TextView_privateImeOptions: 732 setPrivateImeOptions(a.getString(attr)); 733 break; 734 735 case com.android.internal.R.styleable.TextView_editorExtras: 736 try { 737 setInputExtras(a.getResourceId(attr, 0)); 738 } catch (XmlPullParserException e) { 739 Log.w(LOG_TAG, "Failure reading input extras", e); 740 } catch (IOException e) { 741 Log.w(LOG_TAG, "Failure reading input extras", e); 742 } 743 break; 744 745 case com.android.internal.R.styleable.TextView_textSelectHandleLeft: 746 mTextSelectHandleLeftRes = a.getResourceId(attr, 0); 747 break; 748 749 case com.android.internal.R.styleable.TextView_textSelectHandleRight: 750 mTextSelectHandleRightRes = a.getResourceId(attr, 0); 751 break; 752 753 case com.android.internal.R.styleable.TextView_textSelectHandle: 754 mTextSelectHandleRes = a.getResourceId(attr, 0); 755 break; 756 757 case com.android.internal.R.styleable.TextView_textEditPasteWindowLayout: 758 mTextEditPasteWindowLayout = a.getResourceId(attr, 0); 759 break; 760 761 case com.android.internal.R.styleable.TextView_textEditNoPasteWindowLayout: 762 mTextEditNoPasteWindowLayout = a.getResourceId(attr, 0); 763 break; 764 765 case com.android.internal.R.styleable.TextView_textEditSidePasteWindowLayout: 766 mTextEditSidePasteWindowLayout = a.getResourceId(attr, 0); 767 break; 768 769 case com.android.internal.R.styleable.TextView_textEditSideNoPasteWindowLayout: 770 mTextEditSideNoPasteWindowLayout = a.getResourceId(attr, 0); 771 break; 772 773 case com.android.internal.R.styleable.TextView_textIsSelectable: 774 mTextIsSelectable = a.getBoolean(attr, false); 775 break; 776 } 777 } 778 a.recycle(); 779 780 BufferType bufferType = BufferType.EDITABLE; 781 782 final int variation = 783 inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION); 784 final boolean passwordInputType = variation 785 == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD); 786 final boolean webPasswordInputType = variation 787 == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD); 788 final boolean numberPasswordInputType = variation 789 == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD); 790 791 if (inputMethod != null) { 792 Class<?> c; 793 794 try { 795 c = Class.forName(inputMethod.toString()); 796 } catch (ClassNotFoundException ex) { 797 throw new RuntimeException(ex); 798 } 799 800 try { 801 mInput = (KeyListener) c.newInstance(); 802 } catch (InstantiationException ex) { 803 throw new RuntimeException(ex); 804 } catch (IllegalAccessException ex) { 805 throw new RuntimeException(ex); 806 } 807 try { 808 mInputType = inputType != EditorInfo.TYPE_NULL 809 ? inputType 810 : mInput.getInputType(); 811 } catch (IncompatibleClassChangeError e) { 812 mInputType = EditorInfo.TYPE_CLASS_TEXT; 813 } 814 } else if (digits != null) { 815 mInput = DigitsKeyListener.getInstance(digits.toString()); 816 // If no input type was specified, we will default to generic 817 // text, since we can't tell the IME about the set of digits 818 // that was selected. 819 mInputType = inputType != EditorInfo.TYPE_NULL 820 ? inputType : EditorInfo.TYPE_CLASS_TEXT; 821 } else if (inputType != EditorInfo.TYPE_NULL) { 822 setInputType(inputType, true); 823 // If set, the input type overrides what was set using the deprecated singleLine flag. 824 singleLine = !isMultilineInputType(inputType); 825 } else if (phone) { 826 mInput = DialerKeyListener.getInstance(); 827 mInputType = inputType = EditorInfo.TYPE_CLASS_PHONE; 828 } else if (numeric != 0) { 829 mInput = DigitsKeyListener.getInstance((numeric & SIGNED) != 0, 830 (numeric & DECIMAL) != 0); 831 inputType = EditorInfo.TYPE_CLASS_NUMBER; 832 if ((numeric & SIGNED) != 0) { 833 inputType |= EditorInfo.TYPE_NUMBER_FLAG_SIGNED; 834 } 835 if ((numeric & DECIMAL) != 0) { 836 inputType |= EditorInfo.TYPE_NUMBER_FLAG_DECIMAL; 837 } 838 mInputType = inputType; 839 } else if (autotext || autocap != -1) { 840 TextKeyListener.Capitalize cap; 841 842 inputType = EditorInfo.TYPE_CLASS_TEXT; 843 844 switch (autocap) { 845 case 1: 846 cap = TextKeyListener.Capitalize.SENTENCES; 847 inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES; 848 break; 849 850 case 2: 851 cap = TextKeyListener.Capitalize.WORDS; 852 inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS; 853 break; 854 855 case 3: 856 cap = TextKeyListener.Capitalize.CHARACTERS; 857 inputType |= EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS; 858 break; 859 860 default: 861 cap = TextKeyListener.Capitalize.NONE; 862 break; 863 } 864 865 mInput = TextKeyListener.getInstance(autotext, cap); 866 mInputType = inputType; 867 } else if (mTextIsSelectable) { 868 // Prevent text changes from keyboard. 869 mInputType = EditorInfo.TYPE_NULL; 870 mInput = null; 871 bufferType = BufferType.SPANNABLE; 872 // Required to request focus while in touch mode. 873 setFocusableInTouchMode(true); 874 // So that selection can be changed using arrow keys and touch is handled. 875 setMovementMethod(ArrowKeyMovementMethod.getInstance()); 876 } else if (editable) { 877 mInput = TextKeyListener.getInstance(); 878 mInputType = EditorInfo.TYPE_CLASS_TEXT; 879 } else { 880 mInput = null; 881 882 switch (buffertype) { 883 case 0: 884 bufferType = BufferType.NORMAL; 885 break; 886 case 1: 887 bufferType = BufferType.SPANNABLE; 888 break; 889 case 2: 890 bufferType = BufferType.EDITABLE; 891 break; 892 } 893 } 894 895 // mInputType has been set from inputType, possibly modified by mInputMethod. 896 // Specialize mInputType to [web]password if we have a text class and the original input 897 // type was a password. 898 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 899 if (password || passwordInputType) { 900 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 901 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 902 } 903 if (webPasswordInputType) { 904 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 905 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 906 } 907 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 908 if (numberPasswordInputType) { 909 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 910 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 911 } 912 } 913 914 if (selectallonfocus) { 915 mSelectAllOnFocus = true; 916 917 if (bufferType == BufferType.NORMAL) 918 bufferType = BufferType.SPANNABLE; 919 } 920 921 setCompoundDrawablesWithIntrinsicBounds( 922 drawableLeft, drawableTop, drawableRight, drawableBottom); 923 setCompoundDrawablePadding(drawablePadding); 924 925 // Same as setSingleLine(), but make sure the transformation method and the maximum number 926 // of lines of height are unchanged for multi-line TextViews. 927 setInputTypeSingleLine(singleLine); 928 applySingleLine(singleLine, singleLine, singleLine); 929 930 if (singleLine && mInput == null && ellipsize < 0) { 931 ellipsize = 3; // END 932 } 933 934 switch (ellipsize) { 935 case 1: 936 setEllipsize(TextUtils.TruncateAt.START); 937 break; 938 case 2: 939 setEllipsize(TextUtils.TruncateAt.MIDDLE); 940 break; 941 case 3: 942 setEllipsize(TextUtils.TruncateAt.END); 943 break; 944 case 4: 945 setHorizontalFadingEdgeEnabled(true); 946 setEllipsize(TextUtils.TruncateAt.MARQUEE); 947 break; 948 } 949 950 setTextColor(textColor != null ? textColor : ColorStateList.valueOf(0xFF000000)); 951 setHintTextColor(textColorHint); 952 setLinkTextColor(textColorLink); 953 if (textColorHighlight != 0) { 954 setHighlightColor(textColorHighlight); 955 } 956 setRawTextSize(textSize); 957 958 if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) { 959 setTransformationMethod(PasswordTransformationMethod.getInstance()); 960 typefaceIndex = MONOSPACE; 961 } else if ((mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION)) 962 == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) { 963 typefaceIndex = MONOSPACE; 964 } 965 966 setTypefaceByIndex(typefaceIndex, styleIndex); 967 968 if (shadowcolor != 0) { 969 setShadowLayer(r, dx, dy, shadowcolor); 970 } 971 972 if (maxlength >= 0) { 973 setFilters(new InputFilter[] { new InputFilter.LengthFilter(maxlength) }); 974 } else { 975 setFilters(NO_FILTERS); 976 } 977 978 setText(text, bufferType); 979 if (hint != null) setHint(hint); 980 981 /* 982 * Views are not normally focusable unless specified to be. 983 * However, TextViews that have input or movement methods *are* 984 * focusable by default. 985 */ 986 a = context.obtainStyledAttributes(attrs, 987 com.android.internal.R.styleable.View, 988 defStyle, 0); 989 990 boolean focusable = mMovement != null || mInput != null; 991 boolean clickable = focusable; 992 boolean longClickable = focusable; 993 994 n = a.getIndexCount(); 995 for (int i = 0; i < n; i++) { 996 int attr = a.getIndex(i); 997 998 switch (attr) { 999 case com.android.internal.R.styleable.View_focusable: 1000 focusable = a.getBoolean(attr, focusable); 1001 break; 1002 1003 case com.android.internal.R.styleable.View_clickable: 1004 clickable = a.getBoolean(attr, clickable); 1005 break; 1006 1007 case com.android.internal.R.styleable.View_longClickable: 1008 longClickable = a.getBoolean(attr, longClickable); 1009 break; 1010 } 1011 } 1012 a.recycle(); 1013 1014 setFocusable(focusable); 1015 setClickable(clickable); 1016 setLongClickable(longClickable); 1017 1018 prepareCursorControllers(); 1019 1020 final ViewConfiguration viewConfiguration = ViewConfiguration.get(context); 1021 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 1022 mSquaredTouchSlopDistance = touchSlop * touchSlop; 1023 } 1024 1025 private void setTypefaceByIndex(int typefaceIndex, int styleIndex) { 1026 Typeface tf = null; 1027 switch (typefaceIndex) { 1028 case SANS: 1029 tf = Typeface.SANS_SERIF; 1030 break; 1031 1032 case SERIF: 1033 tf = Typeface.SERIF; 1034 break; 1035 1036 case MONOSPACE: 1037 tf = Typeface.MONOSPACE; 1038 break; 1039 } 1040 1041 setTypeface(tf, styleIndex); 1042 } 1043 1044 @Override 1045 public void setEnabled(boolean enabled) { 1046 if (enabled == isEnabled()) { 1047 return; 1048 } 1049 1050 if (!enabled) { 1051 // Hide the soft input if the currently active TextView is disabled 1052 InputMethodManager imm = InputMethodManager.peekInstance(); 1053 if (imm != null && imm.isActive(this)) { 1054 imm.hideSoftInputFromWindow(getWindowToken(), 0); 1055 } 1056 } 1057 super.setEnabled(enabled); 1058 } 1059 1060 /** 1061 * Sets the typeface and style in which the text should be displayed, 1062 * and turns on the fake bold and italic bits in the Paint if the 1063 * Typeface that you provided does not have all the bits in the 1064 * style that you specified. 1065 * 1066 * @attr ref android.R.styleable#TextView_typeface 1067 * @attr ref android.R.styleable#TextView_textStyle 1068 */ 1069 public void setTypeface(Typeface tf, int style) { 1070 if (style > 0) { 1071 if (tf == null) { 1072 tf = Typeface.defaultFromStyle(style); 1073 } else { 1074 tf = Typeface.create(tf, style); 1075 } 1076 1077 setTypeface(tf); 1078 // now compute what (if any) algorithmic styling is needed 1079 int typefaceStyle = tf != null ? tf.getStyle() : 0; 1080 int need = style & ~typefaceStyle; 1081 mTextPaint.setFakeBoldText((need & Typeface.BOLD) != 0); 1082 mTextPaint.setTextSkewX((need & Typeface.ITALIC) != 0 ? -0.25f : 0); 1083 } else { 1084 mTextPaint.setFakeBoldText(false); 1085 mTextPaint.setTextSkewX(0); 1086 setTypeface(tf); 1087 } 1088 } 1089 1090 /** 1091 * Subclasses override this to specify that they have a KeyListener 1092 * by default even if not specifically called for in the XML options. 1093 */ 1094 protected boolean getDefaultEditable() { 1095 return false; 1096 } 1097 1098 /** 1099 * Subclasses override this to specify a default movement method. 1100 */ 1101 protected MovementMethod getDefaultMovementMethod() { 1102 return null; 1103 } 1104 1105 /** 1106 * Return the text the TextView is displaying. If setText() was called with 1107 * an argument of BufferType.SPANNABLE or BufferType.EDITABLE, you can cast 1108 * the return value from this method to Spannable or Editable, respectively. 1109 * 1110 * Note: The content of the return value should not be modified. If you want 1111 * a modifiable one, you should make your own copy first. 1112 */ 1113 @ViewDebug.CapturedViewProperty 1114 public CharSequence getText() { 1115 return mText; 1116 } 1117 1118 /** 1119 * Returns the length, in characters, of the text managed by this TextView 1120 */ 1121 public int length() { 1122 return mText.length(); 1123 } 1124 1125 /** 1126 * Return the text the TextView is displaying as an Editable object. If 1127 * the text is not editable, null is returned. 1128 * 1129 * @see #getText 1130 */ 1131 public Editable getEditableText() { 1132 return (mText instanceof Editable) ? (Editable)mText : null; 1133 } 1134 1135 /** 1136 * @return the height of one standard line in pixels. Note that markup 1137 * within the text can cause individual lines to be taller or shorter 1138 * than this height, and the layout may contain additional first- 1139 * or last-line padding. 1140 */ 1141 public int getLineHeight() { 1142 return FastMath.round(mTextPaint.getFontMetricsInt(null) * mSpacingMult + mSpacingAdd); 1143 } 1144 1145 /** 1146 * @return the Layout that is currently being used to display the text. 1147 * This can be null if the text or width has recently changes. 1148 */ 1149 public final Layout getLayout() { 1150 return mLayout; 1151 } 1152 1153 /** 1154 * @return the current key listener for this TextView. 1155 * This will frequently be null for non-EditText TextViews. 1156 */ 1157 public final KeyListener getKeyListener() { 1158 return mInput; 1159 } 1160 1161 /** 1162 * Sets the key listener to be used with this TextView. This can be null 1163 * to disallow user input. Note that this method has significant and 1164 * subtle interactions with soft keyboards and other input method: 1165 * see {@link KeyListener#getInputType() KeyListener.getContentType()} 1166 * for important details. Calling this method will replace the current 1167 * content type of the text view with the content type returned by the 1168 * key listener. 1169 * <p> 1170 * Be warned that if you want a TextView with a key listener or movement 1171 * method not to be focusable, or if you want a TextView without a 1172 * key listener or movement method to be focusable, you must call 1173 * {@link #setFocusable} again after calling this to get the focusability 1174 * back the way you want it. 1175 * 1176 * @attr ref android.R.styleable#TextView_numeric 1177 * @attr ref android.R.styleable#TextView_digits 1178 * @attr ref android.R.styleable#TextView_phoneNumber 1179 * @attr ref android.R.styleable#TextView_inputMethod 1180 * @attr ref android.R.styleable#TextView_capitalize 1181 * @attr ref android.R.styleable#TextView_autoText 1182 */ 1183 public void setKeyListener(KeyListener input) { 1184 setKeyListenerOnly(input); 1185 fixFocusableAndClickableSettings(); 1186 1187 if (input != null) { 1188 try { 1189 mInputType = mInput.getInputType(); 1190 } catch (IncompatibleClassChangeError e) { 1191 mInputType = EditorInfo.TYPE_CLASS_TEXT; 1192 } 1193 // Change inputType, without affecting transformation. 1194 // No need to applySingleLine since mSingleLine is unchanged. 1195 setInputTypeSingleLine(mSingleLine); 1196 } else { 1197 mInputType = EditorInfo.TYPE_NULL; 1198 } 1199 1200 InputMethodManager imm = InputMethodManager.peekInstance(); 1201 if (imm != null) imm.restartInput(this); 1202 } 1203 1204 private void setKeyListenerOnly(KeyListener input) { 1205 mInput = input; 1206 if (mInput != null && !(mText instanceof Editable)) 1207 setText(mText); 1208 1209 setFilters((Editable) mText, mFilters); 1210 } 1211 1212 /** 1213 * @return the movement method being used for this TextView. 1214 * This will frequently be null for non-EditText TextViews. 1215 */ 1216 public final MovementMethod getMovementMethod() { 1217 return mMovement; 1218 } 1219 1220 /** 1221 * Sets the movement method (arrow key handler) to be used for 1222 * this TextView. This can be null to disallow using the arrow keys 1223 * to move the cursor or scroll the view. 1224 * <p> 1225 * Be warned that if you want a TextView with a key listener or movement 1226 * method not to be focusable, or if you want a TextView without a 1227 * key listener or movement method to be focusable, you must call 1228 * {@link #setFocusable} again after calling this to get the focusability 1229 * back the way you want it. 1230 */ 1231 public final void setMovementMethod(MovementMethod movement) { 1232 mMovement = movement; 1233 1234 if (mMovement != null && !(mText instanceof Spannable)) 1235 setText(mText); 1236 1237 fixFocusableAndClickableSettings(); 1238 1239 // SelectionModifierCursorController depends on textCanBeSelected, which depends on mMovement 1240 prepareCursorControllers(); 1241 } 1242 1243 private void fixFocusableAndClickableSettings() { 1244 if ((mMovement != null) || mInput != null) { 1245 setFocusable(true); 1246 setClickable(true); 1247 setLongClickable(true); 1248 } else { 1249 setFocusable(false); 1250 setClickable(false); 1251 setLongClickable(false); 1252 } 1253 } 1254 1255 /** 1256 * @return the current transformation method for this TextView. 1257 * This will frequently be null except for single-line and password 1258 * fields. 1259 */ 1260 public final TransformationMethod getTransformationMethod() { 1261 return mTransformation; 1262 } 1263 1264 /** 1265 * Sets the transformation that is applied to the text that this 1266 * TextView is displaying. 1267 * 1268 * @attr ref android.R.styleable#TextView_password 1269 * @attr ref android.R.styleable#TextView_singleLine 1270 */ 1271 public final void setTransformationMethod(TransformationMethod method) { 1272 if (method == mTransformation) { 1273 // Avoid the setText() below if the transformation is 1274 // the same. 1275 return; 1276 } 1277 if (mTransformation != null) { 1278 if (mText instanceof Spannable) { 1279 ((Spannable) mText).removeSpan(mTransformation); 1280 } 1281 } 1282 1283 mTransformation = method; 1284 1285 setText(mText); 1286 } 1287 1288 /** 1289 * Returns the top padding of the view, plus space for the top 1290 * Drawable if any. 1291 */ 1292 public int getCompoundPaddingTop() { 1293 final Drawables dr = mDrawables; 1294 if (dr == null || dr.mDrawableTop == null) { 1295 return mPaddingTop; 1296 } else { 1297 return mPaddingTop + dr.mDrawablePadding + dr.mDrawableSizeTop; 1298 } 1299 } 1300 1301 /** 1302 * Returns the bottom padding of the view, plus space for the bottom 1303 * Drawable if any. 1304 */ 1305 public int getCompoundPaddingBottom() { 1306 final Drawables dr = mDrawables; 1307 if (dr == null || dr.mDrawableBottom == null) { 1308 return mPaddingBottom; 1309 } else { 1310 return mPaddingBottom + dr.mDrawablePadding + dr.mDrawableSizeBottom; 1311 } 1312 } 1313 1314 /** 1315 * Returns the left padding of the view, plus space for the left 1316 * Drawable if any. 1317 */ 1318 public int getCompoundPaddingLeft() { 1319 final Drawables dr = mDrawables; 1320 if (dr == null || dr.mDrawableLeft == null) { 1321 return mPaddingLeft; 1322 } else { 1323 return mPaddingLeft + dr.mDrawablePadding + dr.mDrawableSizeLeft; 1324 } 1325 } 1326 1327 /** 1328 * Returns the right padding of the view, plus space for the right 1329 * Drawable if any. 1330 */ 1331 public int getCompoundPaddingRight() { 1332 final Drawables dr = mDrawables; 1333 if (dr == null || dr.mDrawableRight == null) { 1334 return mPaddingRight; 1335 } else { 1336 return mPaddingRight + dr.mDrawablePadding + dr.mDrawableSizeRight; 1337 } 1338 } 1339 1340 /** 1341 * Returns the extended top padding of the view, including both the 1342 * top Drawable if any and any extra space to keep more than maxLines 1343 * of text from showing. It is only valid to call this after measuring. 1344 */ 1345 public int getExtendedPaddingTop() { 1346 if (mMaxMode != LINES) { 1347 return getCompoundPaddingTop(); 1348 } 1349 1350 if (mLayout.getLineCount() <= mMaximum) { 1351 return getCompoundPaddingTop(); 1352 } 1353 1354 int top = getCompoundPaddingTop(); 1355 int bottom = getCompoundPaddingBottom(); 1356 int viewht = getHeight() - top - bottom; 1357 int layoutht = mLayout.getLineTop(mMaximum); 1358 1359 if (layoutht >= viewht) { 1360 return top; 1361 } 1362 1363 final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 1364 if (gravity == Gravity.TOP) { 1365 return top; 1366 } else if (gravity == Gravity.BOTTOM) { 1367 return top + viewht - layoutht; 1368 } else { // (gravity == Gravity.CENTER_VERTICAL) 1369 return top + (viewht - layoutht) / 2; 1370 } 1371 } 1372 1373 /** 1374 * Returns the extended bottom padding of the view, including both the 1375 * bottom Drawable if any and any extra space to keep more than maxLines 1376 * of text from showing. It is only valid to call this after measuring. 1377 */ 1378 public int getExtendedPaddingBottom() { 1379 if (mMaxMode != LINES) { 1380 return getCompoundPaddingBottom(); 1381 } 1382 1383 if (mLayout.getLineCount() <= mMaximum) { 1384 return getCompoundPaddingBottom(); 1385 } 1386 1387 int top = getCompoundPaddingTop(); 1388 int bottom = getCompoundPaddingBottom(); 1389 int viewht = getHeight() - top - bottom; 1390 int layoutht = mLayout.getLineTop(mMaximum); 1391 1392 if (layoutht >= viewht) { 1393 return bottom; 1394 } 1395 1396 final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 1397 if (gravity == Gravity.TOP) { 1398 return bottom + viewht - layoutht; 1399 } else if (gravity == Gravity.BOTTOM) { 1400 return bottom; 1401 } else { // (gravity == Gravity.CENTER_VERTICAL) 1402 return bottom + (viewht - layoutht) / 2; 1403 } 1404 } 1405 1406 /** 1407 * Returns the total left padding of the view, including the left 1408 * Drawable if any. 1409 */ 1410 public int getTotalPaddingLeft() { 1411 return getCompoundPaddingLeft(); 1412 } 1413 1414 /** 1415 * Returns the total right padding of the view, including the right 1416 * Drawable if any. 1417 */ 1418 public int getTotalPaddingRight() { 1419 return getCompoundPaddingRight(); 1420 } 1421 1422 /** 1423 * Returns the total top padding of the view, including the top 1424 * Drawable if any, the extra space to keep more than maxLines 1425 * from showing, and the vertical offset for gravity, if any. 1426 */ 1427 public int getTotalPaddingTop() { 1428 return getExtendedPaddingTop() + getVerticalOffset(true); 1429 } 1430 1431 /** 1432 * Returns the total bottom padding of the view, including the bottom 1433 * Drawable if any, the extra space to keep more than maxLines 1434 * from showing, and the vertical offset for gravity, if any. 1435 */ 1436 public int getTotalPaddingBottom() { 1437 return getExtendedPaddingBottom() + getBottomVerticalOffset(true); 1438 } 1439 1440 /** 1441 * Sets the Drawables (if any) to appear to the left of, above, 1442 * to the right of, and below the text. Use null if you do not 1443 * want a Drawable there. The Drawables must already have had 1444 * {@link Drawable#setBounds} called. 1445 * 1446 * @attr ref android.R.styleable#TextView_drawableLeft 1447 * @attr ref android.R.styleable#TextView_drawableTop 1448 * @attr ref android.R.styleable#TextView_drawableRight 1449 * @attr ref android.R.styleable#TextView_drawableBottom 1450 */ 1451 public void setCompoundDrawables(Drawable left, Drawable top, 1452 Drawable right, Drawable bottom) { 1453 Drawables dr = mDrawables; 1454 1455 final boolean drawables = left != null || top != null 1456 || right != null || bottom != null; 1457 1458 if (!drawables) { 1459 // Clearing drawables... can we free the data structure? 1460 if (dr != null) { 1461 if (dr.mDrawablePadding == 0) { 1462 mDrawables = null; 1463 } else { 1464 // We need to retain the last set padding, so just clear 1465 // out all of the fields in the existing structure. 1466 if (dr.mDrawableLeft != null) dr.mDrawableLeft.setCallback(null); 1467 dr.mDrawableLeft = null; 1468 if (dr.mDrawableTop != null) dr.mDrawableTop.setCallback(null); 1469 dr.mDrawableTop = null; 1470 if (dr.mDrawableRight != null) dr.mDrawableRight.setCallback(null); 1471 dr.mDrawableRight = null; 1472 if (dr.mDrawableBottom != null) dr.mDrawableBottom.setCallback(null); 1473 dr.mDrawableBottom = null; 1474 dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0; 1475 dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0; 1476 dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0; 1477 dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0; 1478 } 1479 } 1480 } else { 1481 if (dr == null) { 1482 mDrawables = dr = new Drawables(); 1483 } 1484 1485 if (dr.mDrawableLeft != left && dr.mDrawableLeft != null) { 1486 dr.mDrawableLeft.setCallback(null); 1487 } 1488 dr.mDrawableLeft = left; 1489 1490 if (dr.mDrawableTop != top && dr.mDrawableTop != null) { 1491 dr.mDrawableTop.setCallback(null); 1492 } 1493 dr.mDrawableTop = top; 1494 1495 if (dr.mDrawableRight != right && dr.mDrawableRight != null) { 1496 dr.mDrawableRight.setCallback(null); 1497 } 1498 dr.mDrawableRight = right; 1499 1500 if (dr.mDrawableBottom != bottom && dr.mDrawableBottom != null) { 1501 dr.mDrawableBottom.setCallback(null); 1502 } 1503 dr.mDrawableBottom = bottom; 1504 1505 final Rect compoundRect = dr.mCompoundRect; 1506 int[] state; 1507 1508 state = getDrawableState(); 1509 1510 if (left != null) { 1511 left.setState(state); 1512 left.copyBounds(compoundRect); 1513 left.setCallback(this); 1514 dr.mDrawableSizeLeft = compoundRect.width(); 1515 dr.mDrawableHeightLeft = compoundRect.height(); 1516 } else { 1517 dr.mDrawableSizeLeft = dr.mDrawableHeightLeft = 0; 1518 } 1519 1520 if (right != null) { 1521 right.setState(state); 1522 right.copyBounds(compoundRect); 1523 right.setCallback(this); 1524 dr.mDrawableSizeRight = compoundRect.width(); 1525 dr.mDrawableHeightRight = compoundRect.height(); 1526 } else { 1527 dr.mDrawableSizeRight = dr.mDrawableHeightRight = 0; 1528 } 1529 1530 if (top != null) { 1531 top.setState(state); 1532 top.copyBounds(compoundRect); 1533 top.setCallback(this); 1534 dr.mDrawableSizeTop = compoundRect.height(); 1535 dr.mDrawableWidthTop = compoundRect.width(); 1536 } else { 1537 dr.mDrawableSizeTop = dr.mDrawableWidthTop = 0; 1538 } 1539 1540 if (bottom != null) { 1541 bottom.setState(state); 1542 bottom.copyBounds(compoundRect); 1543 bottom.setCallback(this); 1544 dr.mDrawableSizeBottom = compoundRect.height(); 1545 dr.mDrawableWidthBottom = compoundRect.width(); 1546 } else { 1547 dr.mDrawableSizeBottom = dr.mDrawableWidthBottom = 0; 1548 } 1549 } 1550 1551 invalidate(); 1552 requestLayout(); 1553 } 1554 1555 /** 1556 * Sets the Drawables (if any) to appear to the left of, above, 1557 * to the right of, and below the text. Use 0 if you do not 1558 * want a Drawable there. The Drawables' bounds will be set to 1559 * their intrinsic bounds. 1560 * 1561 * @param left Resource identifier of the left Drawable. 1562 * @param top Resource identifier of the top Drawable. 1563 * @param right Resource identifier of the right Drawable. 1564 * @param bottom Resource identifier of the bottom Drawable. 1565 * 1566 * @attr ref android.R.styleable#TextView_drawableLeft 1567 * @attr ref android.R.styleable#TextView_drawableTop 1568 * @attr ref android.R.styleable#TextView_drawableRight 1569 * @attr ref android.R.styleable#TextView_drawableBottom 1570 */ 1571 public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) { 1572 final Resources resources = getContext().getResources(); 1573 setCompoundDrawablesWithIntrinsicBounds(left != 0 ? resources.getDrawable(left) : null, 1574 top != 0 ? resources.getDrawable(top) : null, 1575 right != 0 ? resources.getDrawable(right) : null, 1576 bottom != 0 ? resources.getDrawable(bottom) : null); 1577 } 1578 1579 /** 1580 * Sets the Drawables (if any) to appear to the left of, above, 1581 * to the right of, and below the text. Use null if you do not 1582 * want a Drawable there. The Drawables' bounds will be set to 1583 * their intrinsic bounds. 1584 * 1585 * @attr ref android.R.styleable#TextView_drawableLeft 1586 * @attr ref android.R.styleable#TextView_drawableTop 1587 * @attr ref android.R.styleable#TextView_drawableRight 1588 * @attr ref android.R.styleable#TextView_drawableBottom 1589 */ 1590 public void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top, 1591 Drawable right, Drawable bottom) { 1592 1593 if (left != null) { 1594 left.setBounds(0, 0, left.getIntrinsicWidth(), left.getIntrinsicHeight()); 1595 } 1596 if (right != null) { 1597 right.setBounds(0, 0, right.getIntrinsicWidth(), right.getIntrinsicHeight()); 1598 } 1599 if (top != null) { 1600 top.setBounds(0, 0, top.getIntrinsicWidth(), top.getIntrinsicHeight()); 1601 } 1602 if (bottom != null) { 1603 bottom.setBounds(0, 0, bottom.getIntrinsicWidth(), bottom.getIntrinsicHeight()); 1604 } 1605 setCompoundDrawables(left, top, right, bottom); 1606 } 1607 1608 /** 1609 * Returns drawables for the left, top, right, and bottom borders. 1610 */ 1611 public Drawable[] getCompoundDrawables() { 1612 final Drawables dr = mDrawables; 1613 if (dr != null) { 1614 return new Drawable[] { 1615 dr.mDrawableLeft, dr.mDrawableTop, dr.mDrawableRight, dr.mDrawableBottom 1616 }; 1617 } else { 1618 return new Drawable[] { null, null, null, null }; 1619 } 1620 } 1621 1622 /** 1623 * Sets the size of the padding between the compound drawables and 1624 * the text. 1625 * 1626 * @attr ref android.R.styleable#TextView_drawablePadding 1627 */ 1628 public void setCompoundDrawablePadding(int pad) { 1629 Drawables dr = mDrawables; 1630 if (pad == 0) { 1631 if (dr != null) { 1632 dr.mDrawablePadding = pad; 1633 } 1634 } else { 1635 if (dr == null) { 1636 mDrawables = dr = new Drawables(); 1637 } 1638 dr.mDrawablePadding = pad; 1639 } 1640 1641 invalidate(); 1642 requestLayout(); 1643 } 1644 1645 /** 1646 * Returns the padding between the compound drawables and the text. 1647 */ 1648 public int getCompoundDrawablePadding() { 1649 final Drawables dr = mDrawables; 1650 return dr != null ? dr.mDrawablePadding : 0; 1651 } 1652 1653 @Override 1654 public void setPadding(int left, int top, int right, int bottom) { 1655 if (left != mPaddingLeft || 1656 right != mPaddingRight || 1657 top != mPaddingTop || 1658 bottom != mPaddingBottom) { 1659 nullLayouts(); 1660 } 1661 1662 // the super call will requestLayout() 1663 super.setPadding(left, top, right, bottom); 1664 invalidate(); 1665 } 1666 1667 /** 1668 * Gets the autolink mask of the text. See {@link 1669 * android.text.util.Linkify#ALL Linkify.ALL} and peers for 1670 * possible values. 1671 * 1672 * @attr ref android.R.styleable#TextView_autoLink 1673 */ 1674 public final int getAutoLinkMask() { 1675 return mAutoLinkMask; 1676 } 1677 1678 /** 1679 * Sets the text color, size, style, hint color, and highlight color 1680 * from the specified TextAppearance resource. 1681 */ 1682 public void setTextAppearance(Context context, int resid) { 1683 TypedArray appearance = 1684 context.obtainStyledAttributes(resid, 1685 com.android.internal.R.styleable.TextAppearance); 1686 1687 int color; 1688 ColorStateList colors; 1689 int ts; 1690 1691 color = appearance.getColor(com.android.internal.R.styleable.TextAppearance_textColorHighlight, 0); 1692 if (color != 0) { 1693 setHighlightColor(color); 1694 } 1695 1696 colors = appearance.getColorStateList(com.android.internal.R.styleable. 1697 TextAppearance_textColor); 1698 if (colors != null) { 1699 setTextColor(colors); 1700 } 1701 1702 ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable. 1703 TextAppearance_textSize, 0); 1704 if (ts != 0) { 1705 setRawTextSize(ts); 1706 } 1707 1708 colors = appearance.getColorStateList(com.android.internal.R.styleable. 1709 TextAppearance_textColorHint); 1710 if (colors != null) { 1711 setHintTextColor(colors); 1712 } 1713 1714 colors = appearance.getColorStateList(com.android.internal.R.styleable. 1715 TextAppearance_textColorLink); 1716 if (colors != null) { 1717 setLinkTextColor(colors); 1718 } 1719 1720 int typefaceIndex, styleIndex; 1721 1722 typefaceIndex = appearance.getInt(com.android.internal.R.styleable. 1723 TextAppearance_typeface, -1); 1724 styleIndex = appearance.getInt(com.android.internal.R.styleable. 1725 TextAppearance_textStyle, -1); 1726 1727 setTypefaceByIndex(typefaceIndex, styleIndex); 1728 1729 appearance.recycle(); 1730 } 1731 1732 /** 1733 * @return the size (in pixels) of the default text size in this TextView. 1734 */ 1735 public float getTextSize() { 1736 return mTextPaint.getTextSize(); 1737 } 1738 1739 /** 1740 * Set the default text size to the given value, interpreted as "scaled 1741 * pixel" units. This size is adjusted based on the current density and 1742 * user font size preference. 1743 * 1744 * @param size The scaled pixel size. 1745 * 1746 * @attr ref android.R.styleable#TextView_textSize 1747 */ 1748 @android.view.RemotableViewMethod 1749 public void setTextSize(float size) { 1750 setTextSize(TypedValue.COMPLEX_UNIT_SP, size); 1751 } 1752 1753 /** 1754 * Set the default text size to a given unit and value. See {@link 1755 * TypedValue} for the possible dimension units. 1756 * 1757 * @param unit The desired dimension unit. 1758 * @param size The desired size in the given units. 1759 * 1760 * @attr ref android.R.styleable#TextView_textSize 1761 */ 1762 public void setTextSize(int unit, float size) { 1763 Context c = getContext(); 1764 Resources r; 1765 1766 if (c == null) 1767 r = Resources.getSystem(); 1768 else 1769 r = c.getResources(); 1770 1771 setRawTextSize(TypedValue.applyDimension( 1772 unit, size, r.getDisplayMetrics())); 1773 } 1774 1775 private void setRawTextSize(float size) { 1776 if (size != mTextPaint.getTextSize()) { 1777 mTextPaint.setTextSize(size); 1778 1779 if (mLayout != null) { 1780 nullLayouts(); 1781 requestLayout(); 1782 invalidate(); 1783 } 1784 } 1785 } 1786 1787 /** 1788 * @return the extent by which text is currently being stretched 1789 * horizontally. This will usually be 1. 1790 */ 1791 public float getTextScaleX() { 1792 return mTextPaint.getTextScaleX(); 1793 } 1794 1795 /** 1796 * Sets the extent by which text should be stretched horizontally. 1797 * 1798 * @attr ref android.R.styleable#TextView_textScaleX 1799 */ 1800 @android.view.RemotableViewMethod 1801 public void setTextScaleX(float size) { 1802 if (size != mTextPaint.getTextScaleX()) { 1803 mUserSetTextScaleX = true; 1804 mTextPaint.setTextScaleX(size); 1805 1806 if (mLayout != null) { 1807 nullLayouts(); 1808 requestLayout(); 1809 invalidate(); 1810 } 1811 } 1812 } 1813 1814 /** 1815 * Sets the typeface and style in which the text should be displayed. 1816 * Note that not all Typeface families actually have bold and italic 1817 * variants, so you may need to use 1818 * {@link #setTypeface(Typeface, int)} to get the appearance 1819 * that you actually want. 1820 * 1821 * @attr ref android.R.styleable#TextView_typeface 1822 * @attr ref android.R.styleable#TextView_textStyle 1823 */ 1824 public void setTypeface(Typeface tf) { 1825 if (mTextPaint.getTypeface() != tf) { 1826 mTextPaint.setTypeface(tf); 1827 1828 if (mLayout != null) { 1829 nullLayouts(); 1830 requestLayout(); 1831 invalidate(); 1832 } 1833 } 1834 } 1835 1836 /** 1837 * @return the current typeface and style in which the text is being 1838 * displayed. 1839 */ 1840 public Typeface getTypeface() { 1841 return mTextPaint.getTypeface(); 1842 } 1843 1844 /** 1845 * Sets the text color for all the states (normal, selected, 1846 * focused) to be this color. 1847 * 1848 * @attr ref android.R.styleable#TextView_textColor 1849 */ 1850 @android.view.RemotableViewMethod 1851 public void setTextColor(int color) { 1852 mTextColor = ColorStateList.valueOf(color); 1853 updateTextColors(); 1854 } 1855 1856 /** 1857 * Sets the text color. 1858 * 1859 * @attr ref android.R.styleable#TextView_textColor 1860 */ 1861 public void setTextColor(ColorStateList colors) { 1862 if (colors == null) { 1863 throw new NullPointerException(); 1864 } 1865 1866 mTextColor = colors; 1867 updateTextColors(); 1868 } 1869 1870 /** 1871 * Return the set of text colors. 1872 * 1873 * @return Returns the set of text colors. 1874 */ 1875 public final ColorStateList getTextColors() { 1876 return mTextColor; 1877 } 1878 1879 /** 1880 * <p>Return the current color selected for normal text.</p> 1881 * 1882 * @return Returns the current text color. 1883 */ 1884 public final int getCurrentTextColor() { 1885 return mCurTextColor; 1886 } 1887 1888 /** 1889 * Sets the color used to display the selection highlight. 1890 * 1891 * @attr ref android.R.styleable#TextView_textColorHighlight 1892 */ 1893 @android.view.RemotableViewMethod 1894 public void setHighlightColor(int color) { 1895 if (mHighlightColor != color) { 1896 mHighlightColor = color; 1897 invalidate(); 1898 } 1899 } 1900 1901 /** 1902 * Gives the text a shadow of the specified radius and color, the specified 1903 * distance from its normal position. 1904 * 1905 * @attr ref android.R.styleable#TextView_shadowColor 1906 * @attr ref android.R.styleable#TextView_shadowDx 1907 * @attr ref android.R.styleable#TextView_shadowDy 1908 * @attr ref android.R.styleable#TextView_shadowRadius 1909 */ 1910 public void setShadowLayer(float radius, float dx, float dy, int color) { 1911 mTextPaint.setShadowLayer(radius, dx, dy, color); 1912 1913 mShadowRadius = radius; 1914 mShadowDx = dx; 1915 mShadowDy = dy; 1916 1917 invalidate(); 1918 } 1919 1920 /** 1921 * @return the base paint used for the text. Please use this only to 1922 * consult the Paint's properties and not to change them. 1923 */ 1924 public TextPaint getPaint() { 1925 return mTextPaint; 1926 } 1927 1928 /** 1929 * Sets the autolink mask of the text. See {@link 1930 * android.text.util.Linkify#ALL Linkify.ALL} and peers for 1931 * possible values. 1932 * 1933 * @attr ref android.R.styleable#TextView_autoLink 1934 */ 1935 @android.view.RemotableViewMethod 1936 public final void setAutoLinkMask(int mask) { 1937 mAutoLinkMask = mask; 1938 } 1939 1940 /** 1941 * Sets whether the movement method will automatically be set to 1942 * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been 1943 * set to nonzero and links are detected in {@link #setText}. 1944 * The default is true. 1945 * 1946 * @attr ref android.R.styleable#TextView_linksClickable 1947 */ 1948 @android.view.RemotableViewMethod 1949 public final void setLinksClickable(boolean whether) { 1950 mLinksClickable = whether; 1951 } 1952 1953 /** 1954 * Returns whether the movement method will automatically be set to 1955 * {@link LinkMovementMethod} if {@link #setAutoLinkMask} has been 1956 * set to nonzero and links are detected in {@link #setText}. 1957 * The default is true. 1958 * 1959 * @attr ref android.R.styleable#TextView_linksClickable 1960 */ 1961 public final boolean getLinksClickable() { 1962 return mLinksClickable; 1963 } 1964 1965 /** 1966 * Returns the list of URLSpans attached to the text 1967 * (by {@link Linkify} or otherwise) if any. You can call 1968 * {@link URLSpan#getURL} on them to find where they link to 1969 * or use {@link Spanned#getSpanStart} and {@link Spanned#getSpanEnd} 1970 * to find the region of the text they are attached to. 1971 */ 1972 public URLSpan[] getUrls() { 1973 if (mText instanceof Spanned) { 1974 return ((Spanned) mText).getSpans(0, mText.length(), URLSpan.class); 1975 } else { 1976 return new URLSpan[0]; 1977 } 1978 } 1979 1980 /** 1981 * Sets the color of the hint text. 1982 * 1983 * @attr ref android.R.styleable#TextView_textColorHint 1984 */ 1985 @android.view.RemotableViewMethod 1986 public final void setHintTextColor(int color) { 1987 mHintTextColor = ColorStateList.valueOf(color); 1988 updateTextColors(); 1989 } 1990 1991 /** 1992 * Sets the color of the hint text. 1993 * 1994 * @attr ref android.R.styleable#TextView_textColorHint 1995 */ 1996 public final void setHintTextColor(ColorStateList colors) { 1997 mHintTextColor = colors; 1998 updateTextColors(); 1999 } 2000 2001 /** 2002 * <p>Return the color used to paint the hint text.</p> 2003 * 2004 * @return Returns the list of hint text colors. 2005 */ 2006 public final ColorStateList getHintTextColors() { 2007 return mHintTextColor; 2008 } 2009 2010 /** 2011 * <p>Return the current color selected to paint the hint text.</p> 2012 * 2013 * @return Returns the current hint text color. 2014 */ 2015 public final int getCurrentHintTextColor() { 2016 return mHintTextColor != null ? mCurHintTextColor : mCurTextColor; 2017 } 2018 2019 /** 2020 * Sets the color of links in the text. 2021 * 2022 * @attr ref android.R.styleable#TextView_textColorLink 2023 */ 2024 @android.view.RemotableViewMethod 2025 public final void setLinkTextColor(int color) { 2026 mLinkTextColor = ColorStateList.valueOf(color); 2027 updateTextColors(); 2028 } 2029 2030 /** 2031 * Sets the color of links in the text. 2032 * 2033 * @attr ref android.R.styleable#TextView_textColorLink 2034 */ 2035 public final void setLinkTextColor(ColorStateList colors) { 2036 mLinkTextColor = colors; 2037 updateTextColors(); 2038 } 2039 2040 /** 2041 * <p>Returns the color used to paint links in the text.</p> 2042 * 2043 * @return Returns the list of link text colors. 2044 */ 2045 public final ColorStateList getLinkTextColors() { 2046 return mLinkTextColor; 2047 } 2048 2049 /** 2050 * Sets the horizontal alignment of the text and the 2051 * vertical gravity that will be used when there is extra space 2052 * in the TextView beyond what is required for the text itself. 2053 * 2054 * @see android.view.Gravity 2055 * @attr ref android.R.styleable#TextView_gravity 2056 */ 2057 public void setGravity(int gravity) { 2058 if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == 0) { 2059 gravity |= Gravity.LEFT; 2060 } 2061 if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) { 2062 gravity |= Gravity.TOP; 2063 } 2064 2065 boolean newLayout = false; 2066 2067 if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) != 2068 (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK)) { 2069 newLayout = true; 2070 } 2071 2072 if (gravity != mGravity) { 2073 invalidate(); 2074 } 2075 2076 mGravity = gravity; 2077 2078 if (mLayout != null && newLayout) { 2079 // XXX this is heavy-handed because no actual content changes. 2080 int want = mLayout.getWidth(); 2081 int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth(); 2082 2083 makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING, 2084 mRight - mLeft - getCompoundPaddingLeft() - 2085 getCompoundPaddingRight(), true); 2086 } 2087 } 2088 2089 /** 2090 * Returns the horizontal and vertical alignment of this TextView. 2091 * 2092 * @see android.view.Gravity 2093 * @attr ref android.R.styleable#TextView_gravity 2094 */ 2095 public int getGravity() { 2096 return mGravity; 2097 } 2098 2099 /** 2100 * @return the flags on the Paint being used to display the text. 2101 * @see Paint#getFlags 2102 */ 2103 public int getPaintFlags() { 2104 return mTextPaint.getFlags(); 2105 } 2106 2107 /** 2108 * Sets flags on the Paint being used to display the text and 2109 * reflows the text if they are different from the old flags. 2110 * @see Paint#setFlags 2111 */ 2112 @android.view.RemotableViewMethod 2113 public void setPaintFlags(int flags) { 2114 if (mTextPaint.getFlags() != flags) { 2115 mTextPaint.setFlags(flags); 2116 2117 if (mLayout != null) { 2118 nullLayouts(); 2119 requestLayout(); 2120 invalidate(); 2121 } 2122 } 2123 } 2124 2125 /** 2126 * Sets whether the text should be allowed to be wider than the 2127 * View is. If false, it will be wrapped to the width of the View. 2128 * 2129 * @attr ref android.R.styleable#TextView_scrollHorizontally 2130 */ 2131 public void setHorizontallyScrolling(boolean whether) { 2132 mHorizontallyScrolling = whether; 2133 2134 if (mLayout != null) { 2135 nullLayouts(); 2136 requestLayout(); 2137 invalidate(); 2138 } 2139 } 2140 2141 /** 2142 * Makes the TextView at least this many lines tall. 2143 * 2144 * Setting this value overrides any other (minimum) height setting. A single line TextView will 2145 * set this value to 1. 2146 * 2147 * @attr ref android.R.styleable#TextView_minLines 2148 */ 2149 @android.view.RemotableViewMethod 2150 public void setMinLines(int minlines) { 2151 mMinimum = minlines; 2152 mMinMode = LINES; 2153 2154 requestLayout(); 2155 invalidate(); 2156 } 2157 2158 /** 2159 * Makes the TextView at least this many pixels tall. 2160 * 2161 * Setting this value overrides any other (minimum) number of lines setting. 2162 * 2163 * @attr ref android.R.styleable#TextView_minHeight 2164 */ 2165 @android.view.RemotableViewMethod 2166 public void setMinHeight(int minHeight) { 2167 mMinimum = minHeight; 2168 mMinMode = PIXELS; 2169 2170 requestLayout(); 2171 invalidate(); 2172 } 2173 2174 /** 2175 * Makes the TextView at most this many lines tall. 2176 * 2177 * Setting this value overrides any other (maximum) height setting. 2178 * 2179 * @attr ref android.R.styleable#TextView_maxLines 2180 */ 2181 @android.view.RemotableViewMethod 2182 public void setMaxLines(int maxlines) { 2183 mMaximum = maxlines; 2184 mMaxMode = LINES; 2185 2186 requestLayout(); 2187 invalidate(); 2188 } 2189 2190 /** 2191 * Makes the TextView at most this many pixels tall. This option is mutually exclusive with the 2192 * {@link #setMaxLines(int)} method. 2193 * 2194 * Setting this value overrides any other (maximum) number of lines setting. 2195 * 2196 * @attr ref android.R.styleable#TextView_maxHeight 2197 */ 2198 @android.view.RemotableViewMethod 2199 public void setMaxHeight(int maxHeight) { 2200 mMaximum = maxHeight; 2201 mMaxMode = PIXELS; 2202 2203 requestLayout(); 2204 invalidate(); 2205 } 2206 2207 /** 2208 * Makes the TextView exactly this many lines tall. 2209 * 2210 * Note that setting this value overrides any other (minimum / maximum) number of lines or 2211 * height setting. A single line TextView will set this value to 1. 2212 * 2213 * @attr ref android.R.styleable#TextView_lines 2214 */ 2215 @android.view.RemotableViewMethod 2216 public void setLines(int lines) { 2217 mMaximum = mMinimum = lines; 2218 mMaxMode = mMinMode = LINES; 2219 2220 requestLayout(); 2221 invalidate(); 2222 } 2223 2224 /** 2225 * Makes the TextView exactly this many pixels tall. 2226 * You could do the same thing by specifying this number in the 2227 * LayoutParams. 2228 * 2229 * Note that setting this value overrides any other (minimum / maximum) number of lines or 2230 * height setting. 2231 * 2232 * @attr ref android.R.styleable#TextView_height 2233 */ 2234 @android.view.RemotableViewMethod 2235 public void setHeight(int pixels) { 2236 mMaximum = mMinimum = pixels; 2237 mMaxMode = mMinMode = PIXELS; 2238 2239 requestLayout(); 2240 invalidate(); 2241 } 2242 2243 /** 2244 * Makes the TextView at least this many ems wide 2245 * 2246 * @attr ref android.R.styleable#TextView_minEms 2247 */ 2248 @android.view.RemotableViewMethod 2249 public void setMinEms(int minems) { 2250 mMinWidth = minems; 2251 mMinWidthMode = EMS; 2252 2253 requestLayout(); 2254 invalidate(); 2255 } 2256 2257 /** 2258 * Makes the TextView at least this many pixels wide 2259 * 2260 * @attr ref android.R.styleable#TextView_minWidth 2261 */ 2262 @android.view.RemotableViewMethod 2263 public void setMinWidth(int minpixels) { 2264 mMinWidth = minpixels; 2265 mMinWidthMode = PIXELS; 2266 2267 requestLayout(); 2268 invalidate(); 2269 } 2270 2271 /** 2272 * Makes the TextView at most this many ems wide 2273 * 2274 * @attr ref android.R.styleable#TextView_maxEms 2275 */ 2276 @android.view.RemotableViewMethod 2277 public void setMaxEms(int maxems) { 2278 mMaxWidth = maxems; 2279 mMaxWidthMode = EMS; 2280 2281 requestLayout(); 2282 invalidate(); 2283 } 2284 2285 /** 2286 * Makes the TextView at most this many pixels wide 2287 * 2288 * @attr ref android.R.styleable#TextView_maxWidth 2289 */ 2290 @android.view.RemotableViewMethod 2291 public void setMaxWidth(int maxpixels) { 2292 mMaxWidth = maxpixels; 2293 mMaxWidthMode = PIXELS; 2294 2295 requestLayout(); 2296 invalidate(); 2297 } 2298 2299 /** 2300 * Makes the TextView exactly this many ems wide 2301 * 2302 * @attr ref android.R.styleable#TextView_ems 2303 */ 2304 @android.view.RemotableViewMethod 2305 public void setEms(int ems) { 2306 mMaxWidth = mMinWidth = ems; 2307 mMaxWidthMode = mMinWidthMode = EMS; 2308 2309 requestLayout(); 2310 invalidate(); 2311 } 2312 2313 /** 2314 * Makes the TextView exactly this many pixels wide. 2315 * You could do the same thing by specifying this number in the 2316 * LayoutParams. 2317 * 2318 * @attr ref android.R.styleable#TextView_width 2319 */ 2320 @android.view.RemotableViewMethod 2321 public void setWidth(int pixels) { 2322 mMaxWidth = mMinWidth = pixels; 2323 mMaxWidthMode = mMinWidthMode = PIXELS; 2324 2325 requestLayout(); 2326 invalidate(); 2327 } 2328 2329 2330 /** 2331 * Sets line spacing for this TextView. Each line will have its height 2332 * multiplied by <code>mult</code> and have <code>add</code> added to it. 2333 * 2334 * @attr ref android.R.styleable#TextView_lineSpacingExtra 2335 * @attr ref android.R.styleable#TextView_lineSpacingMultiplier 2336 */ 2337 public void setLineSpacing(float add, float mult) { 2338 mSpacingMult = mult; 2339 mSpacingAdd = add; 2340 2341 if (mLayout != null) { 2342 nullLayouts(); 2343 requestLayout(); 2344 invalidate(); 2345 } 2346 } 2347 2348 /** 2349 * Convenience method: Append the specified text to the TextView's 2350 * display buffer, upgrading it to BufferType.EDITABLE if it was 2351 * not already editable. 2352 */ 2353 public final void append(CharSequence text) { 2354 append(text, 0, text.length()); 2355 } 2356 2357 /** 2358 * Convenience method: Append the specified text slice to the TextView's 2359 * display buffer, upgrading it to BufferType.EDITABLE if it was 2360 * not already editable. 2361 */ 2362 public void append(CharSequence text, int start, int end) { 2363 if (!(mText instanceof Editable)) { 2364 setText(mText, BufferType.EDITABLE); 2365 } 2366 2367 ((Editable) mText).append(text, start, end); 2368 } 2369 2370 private void updateTextColors() { 2371 boolean inval = false; 2372 int color = mTextColor.getColorForState(getDrawableState(), 0); 2373 if (color != mCurTextColor) { 2374 mCurTextColor = color; 2375 inval = true; 2376 } 2377 if (mLinkTextColor != null) { 2378 color = mLinkTextColor.getColorForState(getDrawableState(), 0); 2379 if (color != mTextPaint.linkColor) { 2380 mTextPaint.linkColor = color; 2381 inval = true; 2382 } 2383 } 2384 if (mHintTextColor != null) { 2385 color = mHintTextColor.getColorForState(getDrawableState(), 0); 2386 if (color != mCurHintTextColor && mText.length() == 0) { 2387 mCurHintTextColor = color; 2388 inval = true; 2389 } 2390 } 2391 if (inval) { 2392 invalidate(); 2393 } 2394 } 2395 2396 @Override 2397 protected void drawableStateChanged() { 2398 super.drawableStateChanged(); 2399 if (mTextColor != null && mTextColor.isStateful() 2400 || (mHintTextColor != null && mHintTextColor.isStateful()) 2401 || (mLinkTextColor != null && mLinkTextColor.isStateful())) { 2402 updateTextColors(); 2403 } 2404 2405 final Drawables dr = mDrawables; 2406 if (dr != null) { 2407 int[] state = getDrawableState(); 2408 if (dr.mDrawableTop != null && dr.mDrawableTop.isStateful()) { 2409 dr.mDrawableTop.setState(state); 2410 } 2411 if (dr.mDrawableBottom != null && dr.mDrawableBottom.isStateful()) { 2412 dr.mDrawableBottom.setState(state); 2413 } 2414 if (dr.mDrawableLeft != null && dr.mDrawableLeft.isStateful()) { 2415 dr.mDrawableLeft.setState(state); 2416 } 2417 if (dr.mDrawableRight != null && dr.mDrawableRight.isStateful()) { 2418 dr.mDrawableRight.setState(state); 2419 } 2420 } 2421 } 2422 2423 /** 2424 * User interface state that is stored by TextView for implementing 2425 * {@link View#onSaveInstanceState}. 2426 */ 2427 public static class SavedState extends BaseSavedState { 2428 int selStart; 2429 int selEnd; 2430 CharSequence text; 2431 boolean frozenWithFocus; 2432 CharSequence error; 2433 2434 SavedState(Parcelable superState) { 2435 super(superState); 2436 } 2437 2438 @Override 2439 public void writeToParcel(Parcel out, int flags) { 2440 super.writeToParcel(out, flags); 2441 out.writeInt(selStart); 2442 out.writeInt(selEnd); 2443 out.writeInt(frozenWithFocus ? 1 : 0); 2444 TextUtils.writeToParcel(text, out, flags); 2445 2446 if (error == null) { 2447 out.writeInt(0); 2448 } else { 2449 out.writeInt(1); 2450 TextUtils.writeToParcel(error, out, flags); 2451 } 2452 } 2453 2454 @Override 2455 public String toString() { 2456 String str = "TextView.SavedState{" 2457 + Integer.toHexString(System.identityHashCode(this)) 2458 + " start=" + selStart + " end=" + selEnd; 2459 if (text != null) { 2460 str += " text=" + text; 2461 } 2462 return str + "}"; 2463 } 2464 2465 @SuppressWarnings("hiding") 2466 public static final Parcelable.Creator<SavedState> CREATOR 2467 = new Parcelable.Creator<SavedState>() { 2468 public SavedState createFromParcel(Parcel in) { 2469 return new SavedState(in); 2470 } 2471 2472 public SavedState[] newArray(int size) { 2473 return new SavedState[size]; 2474 } 2475 }; 2476 2477 private SavedState(Parcel in) { 2478 super(in); 2479 selStart = in.readInt(); 2480 selEnd = in.readInt(); 2481 frozenWithFocus = (in.readInt() != 0); 2482 text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in); 2483 2484 if (in.readInt() != 0) { 2485 error = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in); 2486 } 2487 } 2488 } 2489 2490 @Override 2491 public Parcelable onSaveInstanceState() { 2492 Parcelable superState = super.onSaveInstanceState(); 2493 2494 // Save state if we are forced to 2495 boolean save = mFreezesText; 2496 int start = 0; 2497 int end = 0; 2498 2499 if (mText != null) { 2500 start = getSelectionStart(); 2501 end = getSelectionEnd(); 2502 if (start >= 0 || end >= 0) { 2503 // Or save state if there is a selection 2504 save = true; 2505 } 2506 } 2507 2508 if (save) { 2509 SavedState ss = new SavedState(superState); 2510 // XXX Should also save the current scroll position! 2511 ss.selStart = start; 2512 ss.selEnd = end; 2513 2514 if (mText instanceof Spanned) { 2515 /* 2516 * Calling setText() strips off any ChangeWatchers; 2517 * strip them now to avoid leaking references. 2518 * But do it to a copy so that if there are any 2519 * further changes to the text of this view, it 2520 * won't get into an inconsistent state. 2521 */ 2522 2523 Spannable sp = new SpannableString(mText); 2524 2525 for (ChangeWatcher cw : 2526 sp.getSpans(0, sp.length(), ChangeWatcher.class)) { 2527 sp.removeSpan(cw); 2528 } 2529 2530 ss.text = sp; 2531 } else { 2532 ss.text = mText.toString(); 2533 } 2534 2535 if (isFocused() && start >= 0 && end >= 0) { 2536 ss.frozenWithFocus = true; 2537 } 2538 2539 ss.error = mError; 2540 2541 return ss; 2542 } 2543 2544 return superState; 2545 } 2546 2547 @Override 2548 public void onRestoreInstanceState(Parcelable state) { 2549 if (!(state instanceof SavedState)) { 2550 super.onRestoreInstanceState(state); 2551 return; 2552 } 2553 2554 SavedState ss = (SavedState)state; 2555 super.onRestoreInstanceState(ss.getSuperState()); 2556 2557 // XXX restore buffer type too, as well as lots of other stuff 2558 if (ss.text != null) { 2559 setText(ss.text); 2560 } 2561 2562 if (ss.selStart >= 0 && ss.selEnd >= 0) { 2563 if (mText instanceof Spannable) { 2564 int len = mText.length(); 2565 2566 if (ss.selStart > len || ss.selEnd > len) { 2567 String restored = ""; 2568 2569 if (ss.text != null) { 2570 restored = "(restored) "; 2571 } 2572 2573 Log.e(LOG_TAG, "Saved cursor position " + ss.selStart + 2574 "/" + ss.selEnd + " out of range for " + restored + 2575 "text " + mText); 2576 } else { 2577 Selection.setSelection((Spannable) mText, ss.selStart, 2578 ss.selEnd); 2579 2580 if (ss.frozenWithFocus) { 2581 mFrozenWithFocus = true; 2582 } 2583 } 2584 } 2585 } 2586 2587 if (ss.error != null) { 2588 final CharSequence error = ss.error; 2589 // Display the error later, after the first layout pass 2590 post(new Runnable() { 2591 public void run() { 2592 setError(error); 2593 } 2594 }); 2595 } 2596 } 2597 2598 /** 2599 * Control whether this text view saves its entire text contents when 2600 * freezing to an icicle, in addition to dynamic state such as cursor 2601 * position. By default this is false, not saving the text. Set to true 2602 * if the text in the text view is not being saved somewhere else in 2603 * persistent storage (such as in a content provider) so that if the 2604 * view is later thawed the user will not lose their data. 2605 * 2606 * @param freezesText Controls whether a frozen icicle should include the 2607 * entire text data: true to include it, false to not. 2608 * 2609 * @attr ref android.R.styleable#TextView_freezesText 2610 */ 2611 @android.view.RemotableViewMethod 2612 public void setFreezesText(boolean freezesText) { 2613 mFreezesText = freezesText; 2614 } 2615 2616 /** 2617 * Return whether this text view is including its entire text contents 2618 * in frozen icicles. 2619 * 2620 * @return Returns true if text is included, false if it isn't. 2621 * 2622 * @see #setFreezesText 2623 */ 2624 public boolean getFreezesText() { 2625 return mFreezesText; 2626 } 2627 2628 /////////////////////////////////////////////////////////////////////////// 2629 2630 /** 2631 * Sets the Factory used to create new Editables. 2632 */ 2633 public final void setEditableFactory(Editable.Factory factory) { 2634 mEditableFactory = factory; 2635 setText(mText); 2636 } 2637 2638 /** 2639 * Sets the Factory used to create new Spannables. 2640 */ 2641 public final void setSpannableFactory(Spannable.Factory factory) { 2642 mSpannableFactory = factory; 2643 setText(mText); 2644 } 2645 2646 /** 2647 * Sets the string value of the TextView. TextView <em>does not</em> accept 2648 * HTML-like formatting, which you can do with text strings in XML resource files. 2649 * To style your strings, attach android.text.style.* objects to a 2650 * {@link android.text.SpannableString SpannableString}, or see the 2651 * <a href="{@docRoot}guide/topics/resources/available-resources.html#stringresources"> 2652 * Available Resource Types</a> documentation for an example of setting 2653 * formatted text in the XML resource file. 2654 * 2655 * @attr ref android.R.styleable#TextView_text 2656 */ 2657 @android.view.RemotableViewMethod 2658 public final void setText(CharSequence text) { 2659 setText(text, mBufferType); 2660 } 2661 2662 /** 2663 * Like {@link #setText(CharSequence)}, 2664 * except that the cursor position (if any) is retained in the new text. 2665 * 2666 * @param text The new text to place in the text view. 2667 * 2668 * @see #setText(CharSequence) 2669 */ 2670 @android.view.RemotableViewMethod 2671 public final void setTextKeepState(CharSequence text) { 2672 setTextKeepState(text, mBufferType); 2673 } 2674 2675 /** 2676 * Sets the text that this TextView is to display (see 2677 * {@link #setText(CharSequence)}) and also sets whether it is stored 2678 * in a styleable/spannable buffer and whether it is editable. 2679 * 2680 * @attr ref android.R.styleable#TextView_text 2681 * @attr ref android.R.styleable#TextView_bufferType 2682 */ 2683 public void setText(CharSequence text, BufferType type) { 2684 setText(text, type, true, 0); 2685 2686 if (mCharWrapper != null) { 2687 mCharWrapper.mChars = null; 2688 } 2689 } 2690 2691 private void setText(CharSequence text, BufferType type, 2692 boolean notifyBefore, int oldlen) { 2693 if (text == null) { 2694 text = ""; 2695 } 2696 2697 if (!mUserSetTextScaleX) mTextPaint.setTextScaleX(1.0f); 2698 2699 if (text instanceof Spanned && 2700 ((Spanned) text).getSpanStart(TextUtils.TruncateAt.MARQUEE) >= 0) { 2701 setHorizontalFadingEdgeEnabled(true); 2702 setEllipsize(TextUtils.TruncateAt.MARQUEE); 2703 } 2704 2705 int n = mFilters.length; 2706 for (int i = 0; i < n; i++) { 2707 CharSequence out = mFilters[i].filter(text, 0, text.length(), 2708 EMPTY_SPANNED, 0, 0); 2709 if (out != null) { 2710 text = out; 2711 } 2712 } 2713 2714 if (notifyBefore) { 2715 if (mText != null) { 2716 oldlen = mText.length(); 2717 sendBeforeTextChanged(mText, 0, oldlen, text.length()); 2718 } else { 2719 sendBeforeTextChanged("", 0, 0, text.length()); 2720 } 2721 } 2722 2723 boolean needEditableForNotification = false; 2724 2725 if (mListeners != null && mListeners.size() != 0) { 2726 needEditableForNotification = true; 2727 } 2728 2729 if (type == BufferType.EDITABLE || mInput != null || 2730 needEditableForNotification) { 2731 Editable t = mEditableFactory.newEditable(text); 2732 text = t; 2733 setFilters(t, mFilters); 2734 InputMethodManager imm = InputMethodManager.peekInstance(); 2735 if (imm != null) imm.restartInput(this); 2736 } else if (type == BufferType.SPANNABLE || mMovement != null) { 2737 text = mSpannableFactory.newSpannable(text); 2738 } else if (!(text instanceof CharWrapper)) { 2739 text = TextUtils.stringOrSpannedString(text); 2740 } 2741 2742 if (mAutoLinkMask != 0) { 2743 Spannable s2; 2744 2745 if (type == BufferType.EDITABLE || text instanceof Spannable) { 2746 s2 = (Spannable) text; 2747 } else { 2748 s2 = mSpannableFactory.newSpannable(text); 2749 } 2750 2751 if (Linkify.addLinks(s2, mAutoLinkMask)) { 2752 text = s2; 2753 type = (type == BufferType.EDITABLE) ? BufferType.EDITABLE : BufferType.SPANNABLE; 2754 2755 /* 2756 * We must go ahead and set the text before changing the 2757 * movement method, because setMovementMethod() may call 2758 * setText() again to try to upgrade the buffer type. 2759 */ 2760 mText = text; 2761 2762 // Do not change the movement method for text that support text selection as it 2763 // would prevent an arbitrary cursor displacement. 2764 final boolean hasTextSelection = this instanceof EditText || mTextIsSelectable; 2765 if (mLinksClickable && !hasTextSelection) { 2766 setMovementMethod(LinkMovementMethod.getInstance()); 2767 } 2768 } 2769 } 2770 2771 mBufferType = type; 2772 mText = text; 2773 2774 if (mTransformation == null) 2775 mTransformed = text; 2776 else 2777 mTransformed = mTransformation.getTransformation(text, this); 2778 2779 final int textLength = text.length(); 2780 2781 if (text instanceof Spannable) { 2782 Spannable sp = (Spannable) text; 2783 2784 // Remove any ChangeWatchers that might have come 2785 // from other TextViews. 2786 final ChangeWatcher[] watchers = sp.getSpans(0, sp.length(), ChangeWatcher.class); 2787 final int count = watchers.length; 2788 for (int i = 0; i < count; i++) 2789 sp.removeSpan(watchers[i]); 2790 2791 if (mChangeWatcher == null) 2792 mChangeWatcher = new ChangeWatcher(); 2793 2794 sp.setSpan(mChangeWatcher, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE | 2795 (PRIORITY << Spanned.SPAN_PRIORITY_SHIFT)); 2796 2797 if (mInput != null) { 2798 sp.setSpan(mInput, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2799 } 2800 2801 if (mTransformation != null) { 2802 sp.setSpan(mTransformation, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2803 2804 } 2805 2806 if (mMovement != null) { 2807 mMovement.initialize(this, (Spannable) text); 2808 2809 /* 2810 * Initializing the movement method will have set the 2811 * selection, so reset mSelectionMoved to keep that from 2812 * interfering with the normal on-focus selection-setting. 2813 */ 2814 mSelectionMoved = false; 2815 } 2816 } 2817 2818 if (mLayout != null) { 2819 checkForRelayout(); 2820 } 2821 2822 sendOnTextChanged(text, 0, oldlen, textLength); 2823 onTextChanged(text, 0, oldlen, textLength); 2824 2825 if (needEditableForNotification) { 2826 sendAfterTextChanged((Editable) text); 2827 } 2828 2829 // SelectionModifierCursorController depends on textCanBeSelected, which depends on text 2830 prepareCursorControllers(); 2831 } 2832 2833 /** 2834 * Sets the TextView to display the specified slice of the specified 2835 * char array. You must promise that you will not change the contents 2836 * of the array except for right before another call to setText(), 2837 * since the TextView has no way to know that the text 2838 * has changed and that it needs to invalidate and re-layout. 2839 */ 2840 public final void setText(char[] text, int start, int len) { 2841 int oldlen = 0; 2842 2843 if (start < 0 || len < 0 || start + len > text.length) { 2844 throw new IndexOutOfBoundsException(start + ", " + len); 2845 } 2846 2847 /* 2848 * We must do the before-notification here ourselves because if 2849 * the old text is a CharWrapper we destroy it before calling 2850 * into the normal path. 2851 */ 2852 if (mText != null) { 2853 oldlen = mText.length(); 2854 sendBeforeTextChanged(mText, 0, oldlen, len); 2855 } else { 2856 sendBeforeTextChanged("", 0, 0, len); 2857 } 2858 2859 if (mCharWrapper == null) { 2860 mCharWrapper = new CharWrapper(text, start, len); 2861 } else { 2862 mCharWrapper.set(text, start, len); 2863 } 2864 2865 setText(mCharWrapper, mBufferType, false, oldlen); 2866 } 2867 2868 private static class CharWrapper 2869 implements CharSequence, GetChars, GraphicsOperations { 2870 private char[] mChars; 2871 private int mStart, mLength; 2872 2873 public CharWrapper(char[] chars, int start, int len) { 2874 mChars = chars; 2875 mStart = start; 2876 mLength = len; 2877 } 2878 2879 /* package */ void set(char[] chars, int start, int len) { 2880 mChars = chars; 2881 mStart = start; 2882 mLength = len; 2883 } 2884 2885 public int length() { 2886 return mLength; 2887 } 2888 2889 public char charAt(int off) { 2890 return mChars[off + mStart]; 2891 } 2892 2893 @Override 2894 public String toString() { 2895 return new String(mChars, mStart, mLength); 2896 } 2897 2898 public CharSequence subSequence(int start, int end) { 2899 if (start < 0 || end < 0 || start > mLength || end > mLength) { 2900 throw new IndexOutOfBoundsException(start + ", " + end); 2901 } 2902 2903 return new String(mChars, start + mStart, end - start); 2904 } 2905 2906 public void getChars(int start, int end, char[] buf, int off) { 2907 if (start < 0 || end < 0 || start > mLength || end > mLength) { 2908 throw new IndexOutOfBoundsException(start + ", " + end); 2909 } 2910 2911 System.arraycopy(mChars, start + mStart, buf, off, end - start); 2912 } 2913 2914 public void drawText(Canvas c, int start, int end, 2915 float x, float y, Paint p) { 2916 c.drawText(mChars, start + mStart, end - start, x, y, p); 2917 } 2918 2919 public void drawTextRun(Canvas c, int start, int end, 2920 int contextStart, int contextEnd, float x, float y, int flags, Paint p) { 2921 int count = end - start; 2922 int contextCount = contextEnd - contextStart; 2923 c.drawTextRun(mChars, start + mStart, count, contextStart + mStart, 2924 contextCount, x, y, flags, p); 2925 } 2926 2927 public float measureText(int start, int end, Paint p) { 2928 return p.measureText(mChars, start + mStart, end - start); 2929 } 2930 2931 public int getTextWidths(int start, int end, float[] widths, Paint p) { 2932 return p.getTextWidths(mChars, start + mStart, end - start, widths); 2933 } 2934 2935 public float getTextRunAdvances(int start, int end, int contextStart, 2936 int contextEnd, int flags, float[] advances, int advancesIndex, 2937 Paint p) { 2938 int count = end - start; 2939 int contextCount = contextEnd - contextStart; 2940 return p.getTextRunAdvances(mChars, start + mStart, count, 2941 contextStart + mStart, contextCount, flags, advances, 2942 advancesIndex); 2943 } 2944 2945 public int getTextRunCursor(int contextStart, int contextEnd, int flags, 2946 int offset, int cursorOpt, Paint p) { 2947 int contextCount = contextEnd - contextStart; 2948 return p.getTextRunCursor(mChars, contextStart + mStart, 2949 contextCount, flags, offset + mStart, cursorOpt); 2950 } 2951 } 2952 2953 /** 2954 * Like {@link #setText(CharSequence, android.widget.TextView.BufferType)}, 2955 * except that the cursor position (if any) is retained in the new text. 2956 * 2957 * @see #setText(CharSequence, android.widget.TextView.BufferType) 2958 */ 2959 public final void setTextKeepState(CharSequence text, BufferType type) { 2960 int start = getSelectionStart(); 2961 int end = getSelectionEnd(); 2962 int len = text.length(); 2963 2964 setText(text, type); 2965 2966 if (start >= 0 || end >= 0) { 2967 if (mText instanceof Spannable) { 2968 Selection.setSelection((Spannable) mText, 2969 Math.max(0, Math.min(start, len)), 2970 Math.max(0, Math.min(end, len))); 2971 } 2972 } 2973 } 2974 2975 @android.view.RemotableViewMethod 2976 public final void setText(int resid) { 2977 setText(getContext().getResources().getText(resid)); 2978 } 2979 2980 public final void setText(int resid, BufferType type) { 2981 setText(getContext().getResources().getText(resid), type); 2982 } 2983 2984 /** 2985 * Sets the text to be displayed when the text of the TextView is empty. 2986 * Null means to use the normal empty text. The hint does not currently 2987 * participate in determining the size of the view. 2988 * 2989 * @attr ref android.R.styleable#TextView_hint 2990 */ 2991 @android.view.RemotableViewMethod 2992 public final void setHint(CharSequence hint) { 2993 mHint = TextUtils.stringOrSpannedString(hint); 2994 2995 if (mLayout != null) { 2996 checkForRelayout(); 2997 } 2998 2999 if (mText.length() == 0) { 3000 invalidate(); 3001 } 3002 } 3003 3004 /** 3005 * Sets the text to be displayed when the text of the TextView is empty, 3006 * from a resource. 3007 * 3008 * @attr ref android.R.styleable#TextView_hint 3009 */ 3010 @android.view.RemotableViewMethod 3011 public final void setHint(int resid) { 3012 setHint(getContext().getResources().getText(resid)); 3013 } 3014 3015 /** 3016 * Returns the hint that is displayed when the text of the TextView 3017 * is empty. 3018 * 3019 * @attr ref android.R.styleable#TextView_hint 3020 */ 3021 @ViewDebug.CapturedViewProperty 3022 public CharSequence getHint() { 3023 return mHint; 3024 } 3025 3026 private boolean isMultilineInputType(int type) { 3027 return (type & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE)) == 3028 (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE); 3029 } 3030 3031 /** 3032 * Set the type of the content with a constant as defined for {@link EditorInfo#inputType}. This 3033 * will take care of changing the key listener, by calling {@link #setKeyListener(KeyListener)}, 3034 * to match the given content type. If the given content type is {@link EditorInfo#TYPE_NULL} 3035 * then a soft keyboard will not be displayed for this text view. 3036 * 3037 * Note that the maximum number of displayed lines (see {@link #setMaxLines(int)}) will be 3038 * modified if you change the {@link EditorInfo#TYPE_TEXT_FLAG_MULTI_LINE} flag of the input 3039 * type. 3040 * 3041 * @see #getInputType() 3042 * @see #setRawInputType(int) 3043 * @see android.text.InputType 3044 * @attr ref android.R.styleable#TextView_inputType 3045 */ 3046 public void setInputType(int type) { 3047 final boolean wasPassword = isPasswordInputType(mInputType); 3048 final boolean wasVisiblePassword = isVisiblePasswordInputType(mInputType); 3049 setInputType(type, false); 3050 final boolean isPassword = isPasswordInputType(type); 3051 final boolean isVisiblePassword = isVisiblePasswordInputType(type); 3052 boolean forceUpdate = false; 3053 if (isPassword) { 3054 setTransformationMethod(PasswordTransformationMethod.getInstance()); 3055 setTypefaceByIndex(MONOSPACE, 0); 3056 } else if (isVisiblePassword) { 3057 if (mTransformation == PasswordTransformationMethod.getInstance()) { 3058 forceUpdate = true; 3059 } 3060 setTypefaceByIndex(MONOSPACE, 0); 3061 } else if (wasPassword || wasVisiblePassword) { 3062 // not in password mode, clean up typeface and transformation 3063 setTypefaceByIndex(-1, -1); 3064 if (mTransformation == PasswordTransformationMethod.getInstance()) { 3065 forceUpdate = true; 3066 } 3067 } 3068 3069 boolean singleLine = !isMultilineInputType(type); 3070 3071 // We need to update the single line mode if it has changed or we 3072 // were previously in password mode. 3073 if (mSingleLine != singleLine || forceUpdate) { 3074 // Change single line mode, but only change the transformation if 3075 // we are not in password mode. 3076 applySingleLine(singleLine, !isPassword, true); 3077 } 3078 3079 InputMethodManager imm = InputMethodManager.peekInstance(); 3080 if (imm != null) imm.restartInput(this); 3081 } 3082 3083 /** 3084 * It would be better to rely on the input type for everything. A password inputType should have 3085 * a password transformation. We should hence use isPasswordInputType instead of this method. 3086 * 3087 * We should: 3088 * - Call setInputType in setKeyListener instead of changing the input type directly (which 3089 * would install the correct transformation). 3090 * - Refuse the installation of a non-password transformation in setTransformation if the input 3091 * type is password. 3092 * 3093 * However, this is like this for legacy reasons and we cannot break existing apps. This method 3094 * is useful since it matches what the user can see (obfuscated text or not). 3095 * 3096 * @return true if the current transformation method is of the password type. 3097 */ 3098 private boolean hasPasswordTransformationMethod() { 3099 return mTransformation instanceof PasswordTransformationMethod; 3100 } 3101 3102 private boolean isPasswordInputType(int inputType) { 3103 final int variation = 3104 inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION); 3105 return variation 3106 == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD) 3107 || variation 3108 == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD) 3109 || variation 3110 == (EditorInfo.TYPE_CLASS_NUMBER | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD); 3111 } 3112 3113 private boolean isVisiblePasswordInputType(int inputType) { 3114 final int variation = 3115 inputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION); 3116 return variation 3117 == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD); 3118 } 3119 3120 /** 3121 * Directly change the content type integer of the text view, without 3122 * modifying any other state. 3123 * @see #setInputType(int) 3124 * @see android.text.InputType 3125 * @attr ref android.R.styleable#TextView_inputType 3126 */ 3127 public void setRawInputType(int type) { 3128 mInputType = type; 3129 } 3130 3131 private void setInputType(int type, boolean direct) { 3132 final int cls = type & EditorInfo.TYPE_MASK_CLASS; 3133 KeyListener input; 3134 if (cls == EditorInfo.TYPE_CLASS_TEXT) { 3135 boolean autotext = (type & EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT) != 0; 3136 TextKeyListener.Capitalize cap; 3137 if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_CHARACTERS) != 0) { 3138 cap = TextKeyListener.Capitalize.CHARACTERS; 3139 } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_WORDS) != 0) { 3140 cap = TextKeyListener.Capitalize.WORDS; 3141 } else if ((type & EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES) != 0) { 3142 cap = TextKeyListener.Capitalize.SENTENCES; 3143 } else { 3144 cap = TextKeyListener.Capitalize.NONE; 3145 } 3146 input = TextKeyListener.getInstance(autotext, cap); 3147 } else if (cls == EditorInfo.TYPE_CLASS_NUMBER) { 3148 input = DigitsKeyListener.getInstance( 3149 (type & EditorInfo.TYPE_NUMBER_FLAG_SIGNED) != 0, 3150 (type & EditorInfo.TYPE_NUMBER_FLAG_DECIMAL) != 0); 3151 } else if (cls == EditorInfo.TYPE_CLASS_DATETIME) { 3152 switch (type & EditorInfo.TYPE_MASK_VARIATION) { 3153 case EditorInfo.TYPE_DATETIME_VARIATION_DATE: 3154 input = DateKeyListener.getInstance(); 3155 break; 3156 case EditorInfo.TYPE_DATETIME_VARIATION_TIME: 3157 input = TimeKeyListener.getInstance(); 3158 break; 3159 default: 3160 input = DateTimeKeyListener.getInstance(); 3161 break; 3162 } 3163 } else if (cls == EditorInfo.TYPE_CLASS_PHONE) { 3164 input = DialerKeyListener.getInstance(); 3165 } else { 3166 input = TextKeyListener.getInstance(); 3167 } 3168 setRawInputType(type); 3169 if (direct) mInput = input; 3170 else { 3171 setKeyListenerOnly(input); 3172 } 3173 } 3174 3175 /** 3176 * Get the type of the content. 3177 * 3178 * @see #setInputType(int) 3179 * @see android.text.InputType 3180 */ 3181 public int getInputType() { 3182 return mInputType; 3183 } 3184 3185 /** 3186 * Change the editor type integer associated with the text view, which 3187 * will be reported to an IME with {@link EditorInfo#imeOptions} when it 3188 * has focus. 3189 * @see #getImeOptions 3190 * @see android.view.inputmethod.EditorInfo 3191 * @attr ref android.R.styleable#TextView_imeOptions 3192 */ 3193 public void setImeOptions(int imeOptions) { 3194 if (mInputContentType == null) { 3195 mInputContentType = new InputContentType(); 3196 } 3197 mInputContentType.imeOptions = imeOptions; 3198 } 3199 3200 /** 3201 * Get the type of the IME editor. 3202 * 3203 * @see #setImeOptions(int) 3204 * @see android.view.inputmethod.EditorInfo 3205 */ 3206 public int getImeOptions() { 3207 return mInputContentType != null 3208 ? mInputContentType.imeOptions : EditorInfo.IME_NULL; 3209 } 3210 3211 /** 3212 * Change the custom IME action associated with the text view, which 3213 * will be reported to an IME with {@link EditorInfo#actionLabel} 3214 * and {@link EditorInfo#actionId} when it has focus. 3215 * @see #getImeActionLabel 3216 * @see #getImeActionId 3217 * @see android.view.inputmethod.EditorInfo 3218 * @attr ref android.R.styleable#TextView_imeActionLabel 3219 * @attr ref android.R.styleable#TextView_imeActionId 3220 */ 3221 public void setImeActionLabel(CharSequence label, int actionId) { 3222 if (mInputContentType == null) { 3223 mInputContentType = new InputContentType(); 3224 } 3225 mInputContentType.imeActionLabel = label; 3226 mInputContentType.imeActionId = actionId; 3227 } 3228 3229 /** 3230 * Get the IME action label previous set with {@link #setImeActionLabel}. 3231 * 3232 * @see #setImeActionLabel 3233 * @see android.view.inputmethod.EditorInfo 3234 */ 3235 public CharSequence getImeActionLabel() { 3236 return mInputContentType != null 3237 ? mInputContentType.imeActionLabel : null; 3238 } 3239 3240 /** 3241 * Get the IME action ID previous set with {@link #setImeActionLabel}. 3242 * 3243 * @see #setImeActionLabel 3244 * @see android.view.inputmethod.EditorInfo 3245 */ 3246 public int getImeActionId() { 3247 return mInputContentType != null 3248 ? mInputContentType.imeActionId : 0; 3249 } 3250 3251 /** 3252 * Set a special listener to be called when an action is performed 3253 * on the text view. This will be called when the enter key is pressed, 3254 * or when an action supplied to the IME is selected by the user. Setting 3255 * this means that the normal hard key event will not insert a newline 3256 * into the text view, even if it is multi-line; holding down the ALT 3257 * modifier will, however, allow the user to insert a newline character. 3258 */ 3259 public void setOnEditorActionListener(OnEditorActionListener l) { 3260 if (mInputContentType == null) { 3261 mInputContentType = new InputContentType(); 3262 } 3263 mInputContentType.onEditorActionListener = l; 3264 } 3265 3266 /** 3267 * Called when an attached input method calls 3268 * {@link InputConnection#performEditorAction(int) 3269 * InputConnection.performEditorAction()} 3270 * for this text view. The default implementation will call your action 3271 * listener supplied to {@link #setOnEditorActionListener}, or perform 3272 * a standard operation for {@link EditorInfo#IME_ACTION_NEXT 3273 * EditorInfo.IME_ACTION_NEXT}, {@link EditorInfo#IME_ACTION_PREVIOUS 3274 * EditorInfo.IME_ACTION_PREVIOUS}, or {@link EditorInfo#IME_ACTION_DONE 3275 * EditorInfo.IME_ACTION_DONE}. 3276 * 3277 * <p>For backwards compatibility, if no IME options have been set and the 3278 * text view would not normally advance focus on enter, then 3279 * the NEXT and DONE actions received here will be turned into an enter 3280 * key down/up pair to go through the normal key handling. 3281 * 3282 * @param actionCode The code of the action being performed. 3283 * 3284 * @see #setOnEditorActionListener 3285 */ 3286 public void onEditorAction(int actionCode) { 3287 final InputContentType ict = mInputContentType; 3288 if (ict != null) { 3289 if (ict.onEditorActionListener != null) { 3290 if (ict.onEditorActionListener.onEditorAction(this, 3291 actionCode, null)) { 3292 return; 3293 } 3294 } 3295 3296 // This is the handling for some default action. 3297 // Note that for backwards compatibility we don't do this 3298 // default handling if explicit ime options have not been given, 3299 // instead turning this into the normal enter key codes that an 3300 // app may be expecting. 3301 if (actionCode == EditorInfo.IME_ACTION_NEXT) { 3302 View v = focusSearch(FOCUS_DOWN); 3303 if (v != null) { 3304 if (!v.requestFocus(FOCUS_DOWN)) { 3305 throw new IllegalStateException("focus search returned a view " + 3306 "that wasn't able to take focus!"); 3307 } 3308 } 3309 return; 3310 3311 } else if (actionCode == EditorInfo.IME_ACTION_PREVIOUS) { 3312 View v = focusSearch(FOCUS_UP); 3313 if (v != null) { 3314 if (!v.requestFocus(FOCUS_UP)) { 3315 throw new IllegalStateException("focus search returned a view " + 3316 "that wasn't able to take focus!"); 3317 } 3318 } 3319 return; 3320 3321 } else if (actionCode == EditorInfo.IME_ACTION_DONE) { 3322 InputMethodManager imm = InputMethodManager.peekInstance(); 3323 if (imm != null && imm.isActive(this)) { 3324 imm.hideSoftInputFromWindow(getWindowToken(), 0); 3325 } 3326 return; 3327 } 3328 } 3329 3330 Handler h = getHandler(); 3331 if (h != null) { 3332 long eventTime = SystemClock.uptimeMillis(); 3333 h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME, 3334 new KeyEvent(eventTime, eventTime, 3335 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER, 0, 0, 3336 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 3337 KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE 3338 | KeyEvent.FLAG_EDITOR_ACTION))); 3339 h.sendMessage(h.obtainMessage(ViewRoot.DISPATCH_KEY_FROM_IME, 3340 new KeyEvent(SystemClock.uptimeMillis(), eventTime, 3341 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_ENTER, 0, 0, 3342 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 3343 KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE 3344 | KeyEvent.FLAG_EDITOR_ACTION))); 3345 } 3346 } 3347 3348 /** 3349 * Set the private content type of the text, which is the 3350 * {@link EditorInfo#privateImeOptions EditorInfo.privateImeOptions} 3351 * field that will be filled in when creating an input connection. 3352 * 3353 * @see #getPrivateImeOptions() 3354 * @see EditorInfo#privateImeOptions 3355 * @attr ref android.R.styleable#TextView_privateImeOptions 3356 */ 3357 public void setPrivateImeOptions(String type) { 3358 if (mInputContentType == null) mInputContentType = new InputContentType(); 3359 mInputContentType.privateImeOptions = type; 3360 } 3361 3362 /** 3363 * Get the private type of the content. 3364 * 3365 * @see #setPrivateImeOptions(String) 3366 * @see EditorInfo#privateImeOptions 3367 */ 3368 public String getPrivateImeOptions() { 3369 return mInputContentType != null 3370 ? mInputContentType.privateImeOptions : null; 3371 } 3372 3373 /** 3374 * Set the extra input data of the text, which is the 3375 * {@link EditorInfo#extras TextBoxAttribute.extras} 3376 * Bundle that will be filled in when creating an input connection. The 3377 * given integer is the resource ID of an XML resource holding an 3378 * {@link android.R.styleable#InputExtras <input-extras>} XML tree. 3379 * 3380 * @see #getInputExtras(boolean) 3381 * @see EditorInfo#extras 3382 * @attr ref android.R.styleable#TextView_editorExtras 3383 */ 3384 public void setInputExtras(int xmlResId) 3385 throws XmlPullParserException, IOException { 3386 XmlResourceParser parser = getResources().getXml(xmlResId); 3387 if (mInputContentType == null) mInputContentType = new InputContentType(); 3388 mInputContentType.extras = new Bundle(); 3389 getResources().parseBundleExtras(parser, mInputContentType.extras); 3390 } 3391 3392 /** 3393 * Retrieve the input extras currently associated with the text view, which 3394 * can be viewed as well as modified. 3395 * 3396 * @param create If true, the extras will be created if they don't already 3397 * exist. Otherwise, null will be returned if none have been created. 3398 * @see #setInputExtras(int) 3399 * @see EditorInfo#extras 3400 * @attr ref android.R.styleable#TextView_editorExtras 3401 */ 3402 public Bundle getInputExtras(boolean create) { 3403 if (mInputContentType == null) { 3404 if (!create) return null; 3405 mInputContentType = new InputContentType(); 3406 } 3407 if (mInputContentType.extras == null) { 3408 if (!create) return null; 3409 mInputContentType.extras = new Bundle(); 3410 } 3411 return mInputContentType.extras; 3412 } 3413 3414 /** 3415 * Returns the error message that was set to be displayed with 3416 * {@link #setError}, or <code>null</code> if no error was set 3417 * or if it the error was cleared by the widget after user input. 3418 */ 3419 public CharSequence getError() { 3420 return mError; 3421 } 3422 3423 /** 3424 * Sets the right-hand compound drawable of the TextView to the "error" 3425 * icon and sets an error message that will be displayed in a popup when 3426 * the TextView has focus. The icon and error message will be reset to 3427 * null when any key events cause changes to the TextView's text. If the 3428 * <code>error</code> is <code>null</code>, the error message and icon 3429 * will be cleared. 3430 */ 3431 @android.view.RemotableViewMethod 3432 public void setError(CharSequence error) { 3433 if (error == null) { 3434 setError(null, null); 3435 } else { 3436 Drawable dr = getContext().getResources(). 3437 getDrawable(com.android.internal.R.drawable.indicator_input_error); 3438 3439 dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight()); 3440 setError(error, dr); 3441 } 3442 } 3443 3444 /** 3445 * Sets the right-hand compound drawable of the TextView to the specified 3446 * icon and sets an error message that will be displayed in a popup when 3447 * the TextView has focus. The icon and error message will be reset to 3448 * null when any key events cause changes to the TextView's text. The 3449 * drawable must already have had {@link Drawable#setBounds} set on it. 3450 * If the <code>error</code> is <code>null</code>, the error message will 3451 * be cleared (and you should provide a <code>null</code> icon as well). 3452 */ 3453 public void setError(CharSequence error, Drawable icon) { 3454 error = TextUtils.stringOrSpannedString(error); 3455 3456 mError = error; 3457 mErrorWasChanged = true; 3458 final Drawables dr = mDrawables; 3459 if (dr != null) { 3460 setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop, icon, dr.mDrawableBottom); 3461 } else { 3462 setCompoundDrawables(null, null, icon, null); 3463 } 3464 3465 if (error == null) { 3466 if (mPopup != null) { 3467 if (mPopup.isShowing()) { 3468 mPopup.dismiss(); 3469 } 3470 3471 mPopup = null; 3472 } 3473 } else { 3474 if (isFocused()) { 3475 showError(); 3476 } 3477 } 3478 } 3479 3480 private void showError() { 3481 if (getWindowToken() == null) { 3482 mShowErrorAfterAttach = true; 3483 return; 3484 } 3485 3486 if (mPopup == null) { 3487 LayoutInflater inflater = LayoutInflater.from(getContext()); 3488 final TextView err = (TextView) inflater.inflate( 3489 com.android.internal.R.layout.textview_hint, null); 3490 3491 final float scale = getResources().getDisplayMetrics().density; 3492 mPopup = new ErrorPopup(err, (int) (200 * scale + 0.5f), (int) (50 * scale + 0.5f)); 3493 mPopup.setFocusable(false); 3494 // The user is entering text, so the input method is needed. We 3495 // don't want the popup to be displayed on top of it. 3496 mPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 3497 } 3498 3499 TextView tv = (TextView) mPopup.getContentView(); 3500 chooseSize(mPopup, mError, tv); 3501 tv.setText(mError); 3502 3503 mPopup.showAsDropDown(this, getErrorX(), getErrorY()); 3504 mPopup.fixDirection(mPopup.isAboveAnchor()); 3505 } 3506 3507 private static class ErrorPopup extends PopupWindow { 3508 private boolean mAbove = false; 3509 private final TextView mView; 3510 private int mPopupInlineErrorBackgroundId = 0; 3511 private int mPopupInlineErrorAboveBackgroundId = 0; 3512 3513 ErrorPopup(TextView v, int width, int height) { 3514 super(v, width, height); 3515 mView = v; 3516 // Make sure the TextView has a background set as it will be used the first time it is 3517 // shown and positionned. Initialized with below background, which should have 3518 // dimensions identical to the above version for this to work (and is more likely). 3519 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3520 com.android.internal.R.styleable.Theme_errorMessageBackground); 3521 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 3522 } 3523 3524 void fixDirection(boolean above) { 3525 mAbove = above; 3526 3527 if (above) { 3528 mPopupInlineErrorAboveBackgroundId = 3529 getResourceId(mPopupInlineErrorAboveBackgroundId, 3530 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 3531 } else { 3532 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3533 com.android.internal.R.styleable.Theme_errorMessageBackground); 3534 } 3535 3536 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 3537 mPopupInlineErrorBackgroundId); 3538 } 3539 3540 private int getResourceId(int currentId, int index) { 3541 if (currentId == 0) { 3542 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 3543 R.styleable.Theme); 3544 currentId = styledAttributes.getResourceId(index, 0); 3545 styledAttributes.recycle(); 3546 } 3547 return currentId; 3548 } 3549 3550 @Override 3551 public void update(int x, int y, int w, int h, boolean force) { 3552 super.update(x, y, w, h, force); 3553 3554 boolean above = isAboveAnchor(); 3555 if (above != mAbove) { 3556 fixDirection(above); 3557 } 3558 } 3559 } 3560 3561 /** 3562 * Returns the Y offset to make the pointy top of the error point 3563 * at the middle of the error icon. 3564 */ 3565 private int getErrorX() { 3566 /* 3567 * The "25" is the distance between the point and the right edge 3568 * of the background 3569 */ 3570 final float scale = getResources().getDisplayMetrics().density; 3571 3572 final Drawables dr = mDrawables; 3573 return getWidth() - mPopup.getWidth() - getPaddingRight() - 3574 (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 3575 } 3576 3577 /** 3578 * Returns the Y offset to make the pointy top of the error point 3579 * at the bottom of the error icon. 3580 */ 3581 private int getErrorY() { 3582 /* 3583 * Compound, not extended, because the icon is not clipped 3584 * if the text height is smaller. 3585 */ 3586 final int compoundPaddingTop = getCompoundPaddingTop(); 3587 int vspace = mBottom - mTop - getCompoundPaddingBottom() - compoundPaddingTop; 3588 3589 final Drawables dr = mDrawables; 3590 int icontop = compoundPaddingTop + 3591 (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2; 3592 3593 /* 3594 * The "2" is the distance between the point and the top edge 3595 * of the background. 3596 */ 3597 final float scale = getResources().getDisplayMetrics().density; 3598 return icontop + (dr != null ? dr.mDrawableHeightRight : 0) - getHeight() - 3599 (int) (2 * scale + 0.5f); 3600 } 3601 3602 private void hideError() { 3603 if (mPopup != null) { 3604 if (mPopup.isShowing()) { 3605 mPopup.dismiss(); 3606 } 3607 } 3608 3609 mShowErrorAfterAttach = false; 3610 } 3611 3612 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 3613 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 3614 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 3615 3616 /* 3617 * Figure out how big the text would be if we laid it out to the 3618 * full width of this view minus the border. 3619 */ 3620 int cap = getWidth() - wid; 3621 if (cap < 0) { 3622 cap = 200; // We must not be measured yet -- setFrame() will fix it. 3623 } 3624 3625 Layout l = new StaticLayout(text, tv.getPaint(), cap, 3626 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 3627 float max = 0; 3628 for (int i = 0; i < l.getLineCount(); i++) { 3629 max = Math.max(max, l.getLineWidth(i)); 3630 } 3631 3632 /* 3633 * Now set the popup size to be big enough for the text plus the border. 3634 */ 3635 pop.setWidth(wid + (int) Math.ceil(max)); 3636 pop.setHeight(ht + l.getHeight()); 3637 } 3638 3639 3640 @Override 3641 protected boolean setFrame(int l, int t, int r, int b) { 3642 boolean result = super.setFrame(l, t, r, b); 3643 3644 if (mPopup != null) { 3645 TextView tv = (TextView) mPopup.getContentView(); 3646 chooseSize(mPopup, mError, tv); 3647 mPopup.update(this, getErrorX(), getErrorY(), 3648 mPopup.getWidth(), mPopup.getHeight()); 3649 } 3650 3651 restartMarqueeIfNeeded(); 3652 3653 return result; 3654 } 3655 3656 private void restartMarqueeIfNeeded() { 3657 if (mRestartMarquee && mEllipsize == TextUtils.TruncateAt.MARQUEE) { 3658 mRestartMarquee = false; 3659 startMarquee(); 3660 } 3661 } 3662 3663 /** 3664 * Sets the list of input filters that will be used if the buffer is 3665 * Editable. Has no effect otherwise. 3666 * 3667 * @attr ref android.R.styleable#TextView_maxLength 3668 */ 3669 public void setFilters(InputFilter[] filters) { 3670 if (filters == null) { 3671 throw new IllegalArgumentException(); 3672 } 3673 3674 mFilters = filters; 3675 3676 if (mText instanceof Editable) { 3677 setFilters((Editable) mText, filters); 3678 } 3679 } 3680 3681 /** 3682 * Sets the list of input filters on the specified Editable, 3683 * and includes mInput in the list if it is an InputFilter. 3684 */ 3685 private void setFilters(Editable e, InputFilter[] filters) { 3686 if (mInput instanceof InputFilter) { 3687 InputFilter[] nf = new InputFilter[filters.length + 1]; 3688 3689 System.arraycopy(filters, 0, nf, 0, filters.length); 3690 nf[filters.length] = (InputFilter) mInput; 3691 3692 e.setFilters(nf); 3693 } else { 3694 e.setFilters(filters); 3695 } 3696 } 3697 3698 /** 3699 * Returns the current list of input filters. 3700 */ 3701 public InputFilter[] getFilters() { 3702 return mFilters; 3703 } 3704 3705 ///////////////////////////////////////////////////////////////////////// 3706 3707 private int getVerticalOffset(boolean forceNormal) { 3708 int voffset = 0; 3709 final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 3710 3711 Layout l = mLayout; 3712 if (!forceNormal && mText.length() == 0 && mHintLayout != null) { 3713 l = mHintLayout; 3714 } 3715 3716 if (gravity != Gravity.TOP) { 3717 int boxht; 3718 3719 if (l == mHintLayout) { 3720 boxht = getMeasuredHeight() - getCompoundPaddingTop() - 3721 getCompoundPaddingBottom(); 3722 } else { 3723 boxht = getMeasuredHeight() - getExtendedPaddingTop() - 3724 getExtendedPaddingBottom(); 3725 } 3726 int textht = l.getHeight(); 3727 3728 if (textht < boxht) { 3729 if (gravity == Gravity.BOTTOM) 3730 voffset = boxht - textht; 3731 else // (gravity == Gravity.CENTER_VERTICAL) 3732 voffset = (boxht - textht) >> 1; 3733 } 3734 } 3735 return voffset; 3736 } 3737 3738 private int getBottomVerticalOffset(boolean forceNormal) { 3739 int voffset = 0; 3740 final int gravity = mGravity & Gravity.VERTICAL_GRAVITY_MASK; 3741 3742 Layout l = mLayout; 3743 if (!forceNormal && mText.length() == 0 && mHintLayout != null) { 3744 l = mHintLayout; 3745 } 3746 3747 if (gravity != Gravity.BOTTOM) { 3748 int boxht; 3749 3750 if (l == mHintLayout) { 3751 boxht = getMeasuredHeight() - getCompoundPaddingTop() - 3752 getCompoundPaddingBottom(); 3753 } else { 3754 boxht = getMeasuredHeight() - getExtendedPaddingTop() - 3755 getExtendedPaddingBottom(); 3756 } 3757 int textht = l.getHeight(); 3758 3759 if (textht < boxht) { 3760 if (gravity == Gravity.TOP) 3761 voffset = boxht - textht; 3762 else // (gravity == Gravity.CENTER_VERTICAL) 3763 voffset = (boxht - textht) >> 1; 3764 } 3765 } 3766 return voffset; 3767 } 3768 3769 private void invalidateCursorPath() { 3770 if (mHighlightPathBogus) { 3771 invalidateCursor(); 3772 } else { 3773 synchronized (sTempRect) { 3774 /* 3775 * The reason for this concern about the thickness of the 3776 * cursor and doing the floor/ceil on the coordinates is that 3777 * some EditTexts (notably textfields in the Browser) have 3778 * anti-aliased text where not all the characters are 3779 * necessarily at integer-multiple locations. This should 3780 * make sure the entire cursor gets invalidated instead of 3781 * sometimes missing half a pixel. 3782 */ 3783 3784 float thick = FloatMath.ceil(mTextPaint.getStrokeWidth()); 3785 if (thick < 1.0f) { 3786 thick = 1.0f; 3787 } 3788 3789 thick /= 2; 3790 3791 mHighlightPath.computeBounds(sTempRect, false); 3792 3793 int left = getCompoundPaddingLeft(); 3794 int top = getExtendedPaddingTop() + getVerticalOffset(true); 3795 3796 invalidate((int) FloatMath.floor(left + sTempRect.left - thick), 3797 (int) FloatMath.floor(top + sTempRect.top - thick), 3798 (int) FloatMath.ceil(left + sTempRect.right + thick), 3799 (int) FloatMath.ceil(top + sTempRect.bottom + thick)); 3800 } 3801 } 3802 } 3803 3804 private void invalidateCursor() { 3805 int where = getSelectionEnd(); 3806 3807 invalidateCursor(where, where, where); 3808 } 3809 3810 private void invalidateCursor(int a, int b, int c) { 3811 if (mLayout == null) { 3812 invalidate(); 3813 } else { 3814 if (a >= 0 || b >= 0 || c >= 0) { 3815 int first = Math.min(Math.min(a, b), c); 3816 int last = Math.max(Math.max(a, b), c); 3817 3818 int line = mLayout.getLineForOffset(first); 3819 int top = mLayout.getLineTop(line); 3820 3821 // This is ridiculous, but the descent from the line above 3822 // can hang down into the line we really want to redraw, 3823 // so we have to invalidate part of the line above to make 3824 // sure everything that needs to be redrawn really is. 3825 // (But not the whole line above, because that would cause 3826 // the same problem with the descenders on the line above it!) 3827 if (line > 0) { 3828 top -= mLayout.getLineDescent(line - 1); 3829 } 3830 3831 int line2; 3832 3833 if (first == last) 3834 line2 = line; 3835 else 3836 line2 = mLayout.getLineForOffset(last); 3837 3838 int bottom = mLayout.getLineTop(line2 + 1); 3839 int voffset = getVerticalOffset(true); 3840 3841 int left = getCompoundPaddingLeft() + mScrollX; 3842 invalidate(left, top + voffset + getExtendedPaddingTop(), 3843 left + getWidth() - getCompoundPaddingLeft() - 3844 getCompoundPaddingRight(), 3845 bottom + voffset + getExtendedPaddingTop()); 3846 } 3847 } 3848 } 3849 3850 private void registerForPreDraw() { 3851 final ViewTreeObserver observer = getViewTreeObserver(); 3852 if (observer == null) { 3853 return; 3854 } 3855 3856 if (mPreDrawState == PREDRAW_NOT_REGISTERED) { 3857 observer.addOnPreDrawListener(this); 3858 mPreDrawState = PREDRAW_PENDING; 3859 } else if (mPreDrawState == PREDRAW_DONE) { 3860 mPreDrawState = PREDRAW_PENDING; 3861 } 3862 3863 // else state is PREDRAW_PENDING, so keep waiting. 3864 } 3865 3866 /** 3867 * {@inheritDoc} 3868 */ 3869 public boolean onPreDraw() { 3870 if (mPreDrawState != PREDRAW_PENDING) { 3871 return true; 3872 } 3873 3874 if (mLayout == null) { 3875 assumeLayout(); 3876 } 3877 3878 boolean changed = false; 3879 3880 if (mMovement != null) { 3881 /* This code also provides auto-scrolling when a cursor is moved using a 3882 * CursorController (insertion point or selection limits). 3883 * For selection, ensure start or end is visible depending on controller's state. 3884 */ 3885 int curs = getSelectionEnd(); 3886 // Do not create the controller if it is not already created. 3887 if (mSelectionModifierCursorController != null && 3888 mSelectionModifierCursorController.isSelectionStartDragged()) { 3889 curs = getSelectionStart(); 3890 } 3891 3892 /* 3893 * TODO: This should really only keep the end in view if 3894 * it already was before the text changed. I'm not sure 3895 * of a good way to tell from here if it was. 3896 */ 3897 if (curs < 0 && 3898 (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) { 3899 curs = mText.length(); 3900 } 3901 3902 if (curs >= 0) { 3903 changed = bringPointIntoView(curs); 3904 } 3905 } else { 3906 changed = bringTextIntoView(); 3907 } 3908 3909 // This has to be checked here since: 3910 // - onFocusChanged cannot start it when focus is given to a view with selected text (after 3911 // a screen rotation) since layout is not yet initialized at that point. 3912 if (mCreatedWithASelection) { 3913 startSelectionActionMode(); 3914 mCreatedWithASelection = false; 3915 } 3916 3917 // Phone specific code (there is no ExtractEditText on tablets). 3918 // ExtractEditText does not call onFocus when it is displayed, and mHasSelectionOnFocus can 3919 // not be set. Do the test here instead. 3920 if (this instanceof ExtractEditText && hasSelection()) { 3921 startSelectionActionMode(); 3922 } 3923 3924 mPreDrawState = PREDRAW_DONE; 3925 return !changed; 3926 } 3927 3928 @Override 3929 protected void onAttachedToWindow() { 3930 super.onAttachedToWindow(); 3931 3932 mTemporaryDetach = false; 3933 3934 if (mShowErrorAfterAttach) { 3935 showError(); 3936 mShowErrorAfterAttach = false; 3937 } 3938 3939 final ViewTreeObserver observer = getViewTreeObserver(); 3940 if (observer != null) { 3941 // No need to create the controller. 3942 // The get method will add the listener on controller creation. 3943 if (mInsertionPointCursorController != null) { 3944 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 3945 } 3946 if (mSelectionModifierCursorController != null) { 3947 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 3948 } 3949 } 3950 } 3951 3952 @Override 3953 protected void onDetachedFromWindow() { 3954 super.onDetachedFromWindow(); 3955 3956 final ViewTreeObserver observer = getViewTreeObserver(); 3957 if (observer != null) { 3958 if (mPreDrawState != PREDRAW_NOT_REGISTERED) { 3959 observer.removeOnPreDrawListener(this); 3960 mPreDrawState = PREDRAW_NOT_REGISTERED; 3961 } 3962 // No need to create the controller, as getXXController would. 3963 if (mInsertionPointCursorController != null) { 3964 observer.removeOnTouchModeChangeListener(mInsertionPointCursorController); 3965 } 3966 if (mSelectionModifierCursorController != null) { 3967 observer.removeOnTouchModeChangeListener(mSelectionModifierCursorController); 3968 } 3969 } 3970 3971 if (mError != null) { 3972 hideError(); 3973 } 3974 3975 if (mBlink != null) { 3976 mBlink.cancel(); 3977 } 3978 3979 if (mInsertionPointCursorController != null) { 3980 mInsertionPointCursorController.onDetached(); 3981 } 3982 3983 if (mSelectionModifierCursorController != null) { 3984 mSelectionModifierCursorController.onDetached(); 3985 } 3986 3987 hideControllers(); 3988 } 3989 3990 @Override 3991 protected boolean isPaddingOffsetRequired() { 3992 return mShadowRadius != 0 || mDrawables != null; 3993 } 3994 3995 @Override 3996 protected int getLeftPaddingOffset() { 3997 return getCompoundPaddingLeft() - mPaddingLeft + 3998 (int) Math.min(0, mShadowDx - mShadowRadius); 3999 } 4000 4001 @Override 4002 protected int getTopPaddingOffset() { 4003 return (int) Math.min(0, mShadowDy - mShadowRadius); 4004 } 4005 4006 @Override 4007 protected int getBottomPaddingOffset() { 4008 return (int) Math.max(0, mShadowDy + mShadowRadius); 4009 } 4010 4011 @Override 4012 protected int getRightPaddingOffset() { 4013 return -(getCompoundPaddingRight() - mPaddingRight) + 4014 (int) Math.max(0, mShadowDx + mShadowRadius); 4015 } 4016 4017 @Override 4018 protected boolean verifyDrawable(Drawable who) { 4019 final boolean verified = super.verifyDrawable(who); 4020 if (!verified && mDrawables != null) { 4021 return who == mDrawables.mDrawableLeft || who == mDrawables.mDrawableTop || 4022 who == mDrawables.mDrawableRight || who == mDrawables.mDrawableBottom; 4023 } 4024 return verified; 4025 } 4026 4027 @Override 4028 public void jumpDrawablesToCurrentState() { 4029 super.jumpDrawablesToCurrentState(); 4030 if (mDrawables != null) { 4031 if (mDrawables.mDrawableLeft != null) { 4032 mDrawables.mDrawableLeft.jumpToCurrentState(); 4033 } 4034 if (mDrawables.mDrawableTop != null) { 4035 mDrawables.mDrawableTop.jumpToCurrentState(); 4036 } 4037 if (mDrawables.mDrawableRight != null) { 4038 mDrawables.mDrawableRight.jumpToCurrentState(); 4039 } 4040 if (mDrawables.mDrawableBottom != null) { 4041 mDrawables.mDrawableBottom.jumpToCurrentState(); 4042 } 4043 } 4044 } 4045 4046 @Override 4047 public void invalidateDrawable(Drawable drawable) { 4048 if (verifyDrawable(drawable)) { 4049 final Rect dirty = drawable.getBounds(); 4050 int scrollX = mScrollX; 4051 int scrollY = mScrollY; 4052 4053 // IMPORTANT: The coordinates below are based on the coordinates computed 4054 // for each compound drawable in onDraw(). Make sure to update each section 4055 // accordingly. 4056 final TextView.Drawables drawables = mDrawables; 4057 if (drawables != null) { 4058 if (drawable == drawables.mDrawableLeft) { 4059 final int compoundPaddingTop = getCompoundPaddingTop(); 4060 final int compoundPaddingBottom = getCompoundPaddingBottom(); 4061 final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop; 4062 4063 scrollX += mPaddingLeft; 4064 scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightLeft) / 2; 4065 } else if (drawable == drawables.mDrawableRight) { 4066 final int compoundPaddingTop = getCompoundPaddingTop(); 4067 final int compoundPaddingBottom = getCompoundPaddingBottom(); 4068 final int vspace = mBottom - mTop - compoundPaddingBottom - compoundPaddingTop; 4069 4070 scrollX += (mRight - mLeft - mPaddingRight - drawables.mDrawableSizeRight); 4071 scrollY += compoundPaddingTop + (vspace - drawables.mDrawableHeightRight) / 2; 4072 } else if (drawable == drawables.mDrawableTop) { 4073 final int compoundPaddingLeft = getCompoundPaddingLeft(); 4074 final int compoundPaddingRight = getCompoundPaddingRight(); 4075 final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft; 4076 4077 scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthTop) / 2; 4078 scrollY += mPaddingTop; 4079 } else if (drawable == drawables.mDrawableBottom) { 4080 final int compoundPaddingLeft = getCompoundPaddingLeft(); 4081 final int compoundPaddingRight = getCompoundPaddingRight(); 4082 final int hspace = mRight - mLeft - compoundPaddingRight - compoundPaddingLeft; 4083 4084 scrollX += compoundPaddingLeft + (hspace - drawables.mDrawableWidthBottom) / 2; 4085 scrollY += (mBottom - mTop - mPaddingBottom - drawables.mDrawableSizeBottom); 4086 } 4087 } 4088 4089 invalidate(dirty.left + scrollX, dirty.top + scrollY, 4090 dirty.right + scrollX, dirty.bottom + scrollY); 4091 } 4092 } 4093 4094 @Override 4095 protected boolean onSetAlpha(int alpha) { 4096 // Alpha is supported if and only if the drawing can be done in one pass. 4097 // TODO text with spans with a background color currently do not respect this alpha. 4098 if (getBackground() == null) { 4099 mCurrentAlpha = alpha; 4100 final Drawables dr = mDrawables; 4101 if (dr != null) { 4102 if (dr.mDrawableLeft != null) dr.mDrawableLeft.mutate().setAlpha(alpha); 4103 if (dr.mDrawableTop != null) dr.mDrawableTop.mutate().setAlpha(alpha); 4104 if (dr.mDrawableRight != null) dr.mDrawableRight.mutate().setAlpha(alpha); 4105 if (dr.mDrawableBottom != null) dr.mDrawableBottom.mutate().setAlpha(alpha); 4106 } 4107 return true; 4108 } 4109 4110 mCurrentAlpha = 255; 4111 return false; 4112 } 4113 4114 /** 4115 * When a TextView is used to display a useful piece of information to the user (such as a 4116 * contact's address), it should be made selectable, so that the user can select and copy this 4117 * content. 4118 * 4119 * Use {@link #setTextIsSelectable(boolean)} or the 4120 * {@link android.R.styleable#TextView_textIsSelectable} XML attribute to make this TextView 4121 * selectable (text is not selectable by default). 4122 * 4123 * Note that the content of an EditText is always selectable. 4124 * 4125 * @return True if the text displayed in this TextView can be selected by the user. 4126 * 4127 * @attr ref android.R.styleable#TextView_textIsSelectable 4128 */ 4129 public boolean isTextSelectable() { 4130 return mTextIsSelectable; 4131 } 4132 4133 /** 4134 * Sets whether or not (default) the content of this view is selectable by the user. 4135 * 4136 * Note that this methods affect the {@link #setFocusable(boolean)}, 4137 * {@link #setFocusableInTouchMode(boolean)} {@link #setClickable(boolean)} and 4138 * {@link #setLongClickable(boolean)} states and you may want to restore these if they were 4139 * customized. 4140 * 4141 * See {@link #isTextSelectable} for details. 4142 * 4143 * @param selectable Whether or not the content of this TextView should be selectable. 4144 */ 4145 public void setTextIsSelectable(boolean selectable) { 4146 if (mTextIsSelectable == selectable) return; 4147 4148 mTextIsSelectable = selectable; 4149 4150 setFocusableInTouchMode(selectable); 4151 setFocusable(selectable); 4152 setClickable(selectable); 4153 setLongClickable(selectable); 4154 4155 // mInputType is already EditorInfo.TYPE_NULL and mInput is null; 4156 4157 setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null); 4158 setText(getText(), selectable ? BufferType.SPANNABLE : BufferType.NORMAL); 4159 4160 // Called by setText above, but safer in case of future code changes 4161 prepareCursorControllers(); 4162 } 4163 4164 @Override 4165 protected int[] onCreateDrawableState(int extraSpace) { 4166 final int[] drawableState; 4167 4168 if (mSingleLine) { 4169 drawableState = super.onCreateDrawableState(extraSpace); 4170 } else { 4171 drawableState = super.onCreateDrawableState(extraSpace + 1); 4172 mergeDrawableStates(drawableState, MULTILINE_STATE_SET); 4173 } 4174 4175 if (mTextIsSelectable) { 4176 // Disable pressed state, which was introduced when TextView was made clickable. 4177 // Prevents text color change. 4178 // setClickable(false) would have a similar effect, but it also disables focus changes 4179 // and long press actions, which are both needed by text selection. 4180 final int length = drawableState.length; 4181 for (int i = 0; i < length; i++) { 4182 if (drawableState[i] == R.attr.state_pressed) { 4183 final int[] nonPressedState = new int[length - 1]; 4184 System.arraycopy(drawableState, 0, nonPressedState, 0, i); 4185 System.arraycopy(drawableState, i + 1, nonPressedState, i, length - i - 1); 4186 return nonPressedState; 4187 } 4188 } 4189 } 4190 4191 return drawableState; 4192 } 4193 4194 @Override 4195 protected void onDraw(Canvas canvas) { 4196 if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return; 4197 4198 restartMarqueeIfNeeded(); 4199 4200 // Draw the background for this view 4201 super.onDraw(canvas); 4202 4203 final int compoundPaddingLeft = getCompoundPaddingLeft(); 4204 final int compoundPaddingTop = getCompoundPaddingTop(); 4205 final int compoundPaddingRight = getCompoundPaddingRight(); 4206 final int compoundPaddingBottom = getCompoundPaddingBottom(); 4207 final int scrollX = mScrollX; 4208 final int scrollY = mScrollY; 4209 final int right = mRight; 4210 final int left = mLeft; 4211 final int bottom = mBottom; 4212 final int top = mTop; 4213 4214 final Drawables dr = mDrawables; 4215 if (dr != null) { 4216 /* 4217 * Compound, not extended, because the icon is not clipped 4218 * if the text height is smaller. 4219 */ 4220 4221 int vspace = bottom - top - compoundPaddingBottom - compoundPaddingTop; 4222 int hspace = right - left - compoundPaddingRight - compoundPaddingLeft; 4223 4224 // IMPORTANT: The coordinates computed are also used in invalidateDrawable() 4225 // Make sure to update invalidateDrawable() when changing this code. 4226 if (dr.mDrawableLeft != null) { 4227 canvas.save(); 4228 canvas.translate(scrollX + mPaddingLeft, 4229 scrollY + compoundPaddingTop + 4230 (vspace - dr.mDrawableHeightLeft) / 2); 4231 dr.mDrawableLeft.draw(canvas); 4232 canvas.restore(); 4233 } 4234 4235 // IMPORTANT: The coordinates computed are also used in invalidateDrawable() 4236 // Make sure to update invalidateDrawable() when changing this code. 4237 if (dr.mDrawableRight != null) { 4238 canvas.save(); 4239 canvas.translate(scrollX + right - left - mPaddingRight - dr.mDrawableSizeRight, 4240 scrollY + compoundPaddingTop + (vspace - dr.mDrawableHeightRight) / 2); 4241 dr.mDrawableRight.draw(canvas); 4242 canvas.restore(); 4243 } 4244 4245 // IMPORTANT: The coordinates computed are also used in invalidateDrawable() 4246 // Make sure to update invalidateDrawable() when changing this code. 4247 if (dr.mDrawableTop != null) { 4248 canvas.save(); 4249 canvas.translate(scrollX + compoundPaddingLeft + (hspace - dr.mDrawableWidthTop) / 2, 4250 scrollY + mPaddingTop); 4251 dr.mDrawableTop.draw(canvas); 4252 canvas.restore(); 4253 } 4254 4255 // IMPORTANT: The coordinates computed are also used in invalidateDrawable() 4256 // Make sure to update invalidateDrawable() when changing this code. 4257 if (dr.mDrawableBottom != null) { 4258 canvas.save(); 4259 canvas.translate(scrollX + compoundPaddingLeft + 4260 (hspace - dr.mDrawableWidthBottom) / 2, 4261 scrollY + bottom - top - mPaddingBottom - dr.mDrawableSizeBottom); 4262 dr.mDrawableBottom.draw(canvas); 4263 canvas.restore(); 4264 } 4265 } 4266 4267 if (mPreDrawState == PREDRAW_DONE) { 4268 final ViewTreeObserver observer = getViewTreeObserver(); 4269 if (observer != null) { 4270 observer.removeOnPreDrawListener(this); 4271 mPreDrawState = PREDRAW_NOT_REGISTERED; 4272 } 4273 } 4274 4275 int color = mCurTextColor; 4276 4277 if (mLayout == null) { 4278 assumeLayout(); 4279 } 4280 4281 Layout layout = mLayout; 4282 int cursorcolor = color; 4283 4284 if (mHint != null && mText.length() == 0) { 4285 if (mHintTextColor != null) { 4286 color = mCurHintTextColor; 4287 } 4288 4289 layout = mHintLayout; 4290 } 4291 4292 mTextPaint.setColor(color); 4293 if (mCurrentAlpha != 255) { 4294 // If set, the alpha will override the color's alpha. Multiply the alphas. 4295 mTextPaint.setAlpha((mCurrentAlpha * Color.alpha(color)) / 255); 4296 } 4297 mTextPaint.drawableState = getDrawableState(); 4298 4299 canvas.save(); 4300 /* Would be faster if we didn't have to do this. Can we chop the 4301 (displayable) text so that we don't need to do this ever? 4302 */ 4303 4304 int extendedPaddingTop = getExtendedPaddingTop(); 4305 int extendedPaddingBottom = getExtendedPaddingBottom(); 4306 4307 float clipLeft = compoundPaddingLeft + scrollX; 4308 float clipTop = extendedPaddingTop + scrollY; 4309 float clipRight = right - left - compoundPaddingRight + scrollX; 4310 float clipBottom = bottom - top - extendedPaddingBottom + scrollY; 4311 4312 if (mShadowRadius != 0) { 4313 clipLeft += Math.min(0, mShadowDx - mShadowRadius); 4314 clipRight += Math.max(0, mShadowDx + mShadowRadius); 4315 4316 clipTop += Math.min(0, mShadowDy - mShadowRadius); 4317 clipBottom += Math.max(0, mShadowDy + mShadowRadius); 4318 } 4319 4320 canvas.clipRect(clipLeft, clipTop, clipRight, clipBottom); 4321 4322 int voffsetText = 0; 4323 int voffsetCursor = 0; 4324 4325 // translate in by our padding 4326 { 4327 /* shortcircuit calling getVerticaOffset() */ 4328 if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) { 4329 voffsetText = getVerticalOffset(false); 4330 voffsetCursor = getVerticalOffset(true); 4331 } 4332 canvas.translate(compoundPaddingLeft, extendedPaddingTop + voffsetText); 4333 } 4334 4335 if (mEllipsize == TextUtils.TruncateAt.MARQUEE) { 4336 if (!mSingleLine && getLineCount() == 1 && canMarquee() && 4337 (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) != Gravity.LEFT) { 4338 canvas.translate(mLayout.getLineRight(0) - (mRight - mLeft - 4339 getCompoundPaddingLeft() - getCompoundPaddingRight()), 0.0f); 4340 } 4341 4342 if (mMarquee != null && mMarquee.isRunning()) { 4343 canvas.translate(-mMarquee.mScroll, 0.0f); 4344 } 4345 } 4346 4347 Path highlight = null; 4348 int selStart = -1, selEnd = -1; 4349 4350 // If there is no movement method, then there can be no selection. 4351 // Check that first and attempt to skip everything having to do with 4352 // the cursor. 4353 // XXX This is not strictly true -- a program could set the 4354 // selection manually if it really wanted to. 4355 if (mMovement != null && (isFocused() || isPressed())) { 4356 selStart = getSelectionStart(); 4357 selEnd = getSelectionEnd(); 4358 4359 if ((isCursorVisible() || mTextIsSelectable) && selStart >= 0 && isEnabled()) { 4360 if (mHighlightPath == null) 4361 mHighlightPath = new Path(); 4362 4363 if (selStart == selEnd) { 4364 if (!mTextIsSelectable && 4365 (SystemClock.uptimeMillis() - mShowCursor) % (2 * BLINK) < BLINK) { 4366 if (mHighlightPathBogus) { 4367 mHighlightPath.reset(); 4368 mLayout.getCursorPath(selStart, mHighlightPath, mText); 4369 mHighlightPathBogus = false; 4370 } 4371 4372 // XXX should pass to skin instead of drawing directly 4373 mHighlightPaint.setColor(cursorcolor); 4374 if (mCurrentAlpha != 255) { 4375 mHighlightPaint.setAlpha( 4376 (mCurrentAlpha * Color.alpha(cursorcolor)) / 255); 4377 } 4378 mHighlightPaint.setStyle(Paint.Style.STROKE); 4379 4380 highlight = mHighlightPath; 4381 } 4382 } else { 4383 if (mHighlightPathBogus) { 4384 mHighlightPath.reset(); 4385 mLayout.getSelectionPath(selStart, selEnd, mHighlightPath); 4386 mHighlightPathBogus = false; 4387 } 4388 4389 // XXX should pass to skin instead of drawing directly 4390 mHighlightPaint.setColor(mHighlightColor); 4391 if (mCurrentAlpha != 255) { 4392 mHighlightPaint.setAlpha( 4393 (mCurrentAlpha * Color.alpha(mHighlightColor)) / 255); 4394 } 4395 mHighlightPaint.setStyle(Paint.Style.FILL); 4396 4397 highlight = mHighlightPath; 4398 } 4399 } 4400 } 4401 4402 /* Comment out until we decide what to do about animations 4403 boolean isLinearTextOn = false; 4404 if (currentTransformation != null) { 4405 isLinearTextOn = mTextPaint.isLinearTextOn(); 4406 Matrix m = currentTransformation.getMatrix(); 4407 if (!m.isIdentity()) { 4408 // mTextPaint.setLinearTextOn(true); 4409 } 4410 } 4411 */ 4412 4413 final InputMethodState ims = mInputMethodState; 4414 final int cursorOffsetVertical = voffsetCursor - voffsetText; 4415 if (ims != null && ims.mBatchEditNesting == 0) { 4416 InputMethodManager imm = InputMethodManager.peekInstance(); 4417 if (imm != null) { 4418 if (imm.isActive(this)) { 4419 boolean reported = false; 4420 if (ims.mContentChanged || ims.mSelectionModeChanged) { 4421 // We are in extract mode and the content has changed 4422 // in some way... just report complete new text to the 4423 // input method. 4424 reported = reportExtractedText(); 4425 } 4426 if (!reported && highlight != null) { 4427 int candStart = -1; 4428 int candEnd = -1; 4429 if (mText instanceof Spannable) { 4430 Spannable sp = (Spannable)mText; 4431 candStart = EditableInputConnection.getComposingSpanStart(sp); 4432 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 4433 } 4434 imm.updateSelection(this, selStart, selEnd, candStart, candEnd); 4435 } 4436 } 4437 4438 if (imm.isWatchingCursor(this) && highlight != null) { 4439 highlight.computeBounds(ims.mTmpRectF, true); 4440 ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0; 4441 4442 canvas.getMatrix().mapPoints(ims.mTmpOffset); 4443 ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]); 4444 4445 ims.mTmpRectF.offset(0, cursorOffsetVertical); 4446 4447 ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5), 4448 (int)(ims.mTmpRectF.top + 0.5), 4449 (int)(ims.mTmpRectF.right + 0.5), 4450 (int)(ims.mTmpRectF.bottom + 0.5)); 4451 4452 imm.updateCursor(this, 4453 ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top, 4454 ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom); 4455 } 4456 } 4457 } 4458 4459 if (mCorrectionHighlighter != null) { 4460 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 4461 } 4462 4463 layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical); 4464 4465 if (mMarquee != null && mMarquee.shouldDrawGhost()) { 4466 canvas.translate((int) mMarquee.getGhostOffset(), 0.0f); 4467 layout.draw(canvas, highlight, mHighlightPaint, cursorOffsetVertical); 4468 } 4469 4470 /* Comment out until we decide what to do about animations 4471 if (currentTransformation != null) { 4472 mTextPaint.setLinearTextOn(isLinearTextOn); 4473 } 4474 */ 4475 4476 canvas.restore(); 4477 4478 updateCursorControllerPositions(); 4479 } 4480 4481 /** 4482 * Update the positions of the CursorControllers. Needed by WebTextView, 4483 * which does not draw. 4484 * @hide 4485 */ 4486 protected void updateCursorControllerPositions() { 4487 // No need to create the controllers if they were not already 4488 if (mInsertionPointCursorController != null && 4489 mInsertionPointCursorController.isShowing()) { 4490 mInsertionPointCursorController.updatePosition(); 4491 } 4492 if (mSelectionModifierCursorController != null && 4493 mSelectionModifierCursorController.isShowing()) { 4494 mSelectionModifierCursorController.updatePosition(); 4495 } 4496 } 4497 4498 @Override 4499 public void getFocusedRect(Rect r) { 4500 if (mLayout == null) { 4501 super.getFocusedRect(r); 4502 return; 4503 } 4504 4505 int sel = getSelectionEnd(); 4506 if (sel < 0) { 4507 super.getFocusedRect(r); 4508 return; 4509 } 4510 4511 int line = mLayout.getLineForOffset(sel); 4512 r.top = mLayout.getLineTop(line); 4513 r.bottom = mLayout.getLineBottom(line); 4514 4515 r.left = (int) mLayout.getPrimaryHorizontal(sel); 4516 r.right = r.left + 1; 4517 4518 // Adjust for padding and gravity. 4519 int paddingLeft = getCompoundPaddingLeft(); 4520 int paddingTop = getExtendedPaddingTop(); 4521 if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) { 4522 paddingTop += getVerticalOffset(false); 4523 } 4524 r.offset(paddingLeft, paddingTop); 4525 } 4526 4527 /** 4528 * Return the number of lines of text, or 0 if the internal Layout has not 4529 * been built. 4530 */ 4531 public int getLineCount() { 4532 return mLayout != null ? mLayout.getLineCount() : 0; 4533 } 4534 4535 /** 4536 * Return the baseline for the specified line (0...getLineCount() - 1) 4537 * If bounds is not null, return the top, left, right, bottom extents 4538 * of the specified line in it. If the internal Layout has not been built, 4539 * return 0 and set bounds to (0, 0, 0, 0) 4540 * @param line which line to examine (0..getLineCount() - 1) 4541 * @param bounds Optional. If not null, it returns the extent of the line 4542 * @return the Y-coordinate of the baseline 4543 */ 4544 public int getLineBounds(int line, Rect bounds) { 4545 if (mLayout == null) { 4546 if (bounds != null) { 4547 bounds.set(0, 0, 0, 0); 4548 } 4549 return 0; 4550 } 4551 else { 4552 int baseline = mLayout.getLineBounds(line, bounds); 4553 4554 int voffset = getExtendedPaddingTop(); 4555 if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) { 4556 voffset += getVerticalOffset(true); 4557 } 4558 if (bounds != null) { 4559 bounds.offset(getCompoundPaddingLeft(), voffset); 4560 } 4561 return baseline + voffset; 4562 } 4563 } 4564 4565 @Override 4566 public int getBaseline() { 4567 if (mLayout == null) { 4568 return super.getBaseline(); 4569 } 4570 4571 int voffset = 0; 4572 if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) { 4573 voffset = getVerticalOffset(true); 4574 } 4575 4576 return getExtendedPaddingTop() + voffset + mLayout.getLineBaseline(0); 4577 } 4578 4579 @Override 4580 public boolean onKeyDown(int keyCode, KeyEvent event) { 4581 int which = doKeyDown(keyCode, event, null); 4582 if (which == 0) { 4583 // Go through default dispatching. 4584 return super.onKeyDown(keyCode, event); 4585 } 4586 4587 return true; 4588 } 4589 4590 @Override 4591 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4592 KeyEvent down = KeyEvent.changeAction(event, KeyEvent.ACTION_DOWN); 4593 4594 int which = doKeyDown(keyCode, down, event); 4595 if (which == 0) { 4596 // Go through default dispatching. 4597 return super.onKeyMultiple(keyCode, repeatCount, event); 4598 } 4599 if (which == -1) { 4600 // Consumed the whole thing. 4601 return true; 4602 } 4603 4604 repeatCount--; 4605 4606 // We are going to dispatch the remaining events to either the input 4607 // or movement method. To do this, we will just send a repeated stream 4608 // of down and up events until we have done the complete repeatCount. 4609 // It would be nice if those interfaces had an onKeyMultiple() method, 4610 // but adding that is a more complicated change. 4611 KeyEvent up = KeyEvent.changeAction(event, KeyEvent.ACTION_UP); 4612 if (which == 1) { 4613 mInput.onKeyUp(this, (Editable)mText, keyCode, up); 4614 while (--repeatCount > 0) { 4615 mInput.onKeyDown(this, (Editable)mText, keyCode, down); 4616 mInput.onKeyUp(this, (Editable)mText, keyCode, up); 4617 } 4618 if (mError != null && !mErrorWasChanged) { 4619 setError(null, null); 4620 } 4621 4622 } else if (which == 2) { 4623 mMovement.onKeyUp(this, (Spannable)mText, keyCode, up); 4624 while (--repeatCount > 0) { 4625 mMovement.onKeyDown(this, (Spannable)mText, keyCode, down); 4626 mMovement.onKeyUp(this, (Spannable)mText, keyCode, up); 4627 } 4628 } 4629 4630 return true; 4631 } 4632 4633 /** 4634 * Returns true if pressing ENTER in this field advances focus instead 4635 * of inserting the character. This is true mostly in single-line fields, 4636 * but also in mail addresses and subjects which will display on multiple 4637 * lines but where it doesn't make sense to insert newlines. 4638 */ 4639 private boolean shouldAdvanceFocusOnEnter() { 4640 if (mInput == null) { 4641 return false; 4642 } 4643 4644 if (mSingleLine) { 4645 return true; 4646 } 4647 4648 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 4649 int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION; 4650 if (variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_ADDRESS 4651 || variation == EditorInfo.TYPE_TEXT_VARIATION_EMAIL_SUBJECT) { 4652 return true; 4653 } 4654 } 4655 4656 return false; 4657 } 4658 4659 /** 4660 * Returns true if pressing TAB in this field advances focus instead 4661 * of inserting the character. Insert tabs only in multi-line editors. 4662 */ 4663 private boolean shouldAdvanceFocusOnTab() { 4664 if (mInput != null && !mSingleLine) { 4665 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 4666 int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION; 4667 if (variation == EditorInfo.TYPE_TEXT_FLAG_IME_MULTI_LINE 4668 || variation == EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE) { 4669 return false; 4670 } 4671 } 4672 } 4673 return true; 4674 } 4675 4676 private int doKeyDown(int keyCode, KeyEvent event, KeyEvent otherEvent) { 4677 if (!isEnabled()) { 4678 return 0; 4679 } 4680 4681 switch (keyCode) { 4682 case KeyEvent.KEYCODE_ENTER: 4683 mEnterKeyIsDown = true; 4684 if (event.hasNoModifiers()) { 4685 // When mInputContentType is set, we know that we are 4686 // running in a "modern" cupcake environment, so don't need 4687 // to worry about the application trying to capture 4688 // enter key events. 4689 if (mInputContentType != null) { 4690 // If there is an action listener, given them a 4691 // chance to consume the event. 4692 if (mInputContentType.onEditorActionListener != null && 4693 mInputContentType.onEditorActionListener.onEditorAction( 4694 this, EditorInfo.IME_NULL, event)) { 4695 mInputContentType.enterDown = true; 4696 // We are consuming the enter key for them. 4697 return -1; 4698 } 4699 } 4700 4701 // If our editor should move focus when enter is pressed, or 4702 // this is a generated event from an IME action button, then 4703 // don't let it be inserted into the text. 4704 if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0 4705 || shouldAdvanceFocusOnEnter()) { 4706 if (mOnClickListener != null) { 4707 return 0; 4708 } 4709 return -1; 4710 } 4711 } 4712 break; 4713 4714 case KeyEvent.KEYCODE_DPAD_CENTER: 4715 mDPadCenterIsDown = true; 4716 if (event.hasNoModifiers()) { 4717 if (shouldAdvanceFocusOnEnter()) { 4718 return 0; 4719 } 4720 } 4721 break; 4722 4723 case KeyEvent.KEYCODE_TAB: 4724 if (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4725 if (shouldAdvanceFocusOnTab()) { 4726 return 0; 4727 } 4728 } 4729 break; 4730 4731 // Has to be done on key down (and not on key up) to correctly be intercepted. 4732 case KeyEvent.KEYCODE_BACK: 4733 if (mSelectionActionMode != null) { 4734 stopSelectionActionMode(); 4735 return -1; 4736 } 4737 break; 4738 } 4739 4740 if (mInput != null) { 4741 /* 4742 * Keep track of what the error was before doing the input 4743 * so that if an input filter changed the error, we leave 4744 * that error showing. Otherwise, we take down whatever 4745 * error was showing when the user types something. 4746 */ 4747 mErrorWasChanged = false; 4748 4749 boolean doDown = true; 4750 if (otherEvent != null) { 4751 try { 4752 beginBatchEdit(); 4753 boolean handled = mInput.onKeyOther(this, (Editable) mText, 4754 otherEvent); 4755 if (mError != null && !mErrorWasChanged) { 4756 setError(null, null); 4757 } 4758 doDown = false; 4759 if (handled) { 4760 return -1; 4761 } 4762 } catch (AbstractMethodError e) { 4763 // onKeyOther was added after 1.0, so if it isn't 4764 // implemented we need to try to dispatch as a regular down. 4765 } finally { 4766 endBatchEdit(); 4767 } 4768 } 4769 4770 if (doDown) { 4771 beginBatchEdit(); 4772 if (mInput.onKeyDown(this, (Editable) mText, keyCode, event)) { 4773 endBatchEdit(); 4774 if (mError != null && !mErrorWasChanged) { 4775 setError(null, null); 4776 } 4777 return 1; 4778 } 4779 endBatchEdit(); 4780 } 4781 } 4782 4783 // bug 650865: sometimes we get a key event before a layout. 4784 // don't try to move around if we don't know the layout. 4785 4786 if (mMovement != null && mLayout != null) { 4787 boolean doDown = true; 4788 if (otherEvent != null) { 4789 try { 4790 boolean handled = mMovement.onKeyOther(this, (Spannable) mText, 4791 otherEvent); 4792 doDown = false; 4793 if (handled) { 4794 return -1; 4795 } 4796 } catch (AbstractMethodError e) { 4797 // onKeyOther was added after 1.0, so if it isn't 4798 // implemented we need to try to dispatch as a regular down. 4799 } 4800 } 4801 if (doDown) { 4802 if (mMovement.onKeyDown(this, (Spannable)mText, keyCode, event)) 4803 return 2; 4804 } 4805 } 4806 4807 return 0; 4808 } 4809 4810 @Override 4811 public boolean onKeyUp(int keyCode, KeyEvent event) { 4812 if (!isEnabled()) { 4813 return super.onKeyUp(keyCode, event); 4814 } 4815 4816 switch (keyCode) { 4817 case KeyEvent.KEYCODE_DPAD_CENTER: 4818 mDPadCenterIsDown = false; 4819 if (event.hasNoModifiers()) { 4820 /* 4821 * If there is a click listener, just call through to 4822 * super, which will invoke it. 4823 * 4824 * If there isn't a click listener, try to show the soft 4825 * input method. (It will also 4826 * call performClick(), but that won't do anything in 4827 * this case.) 4828 */ 4829 if (mOnClickListener == null) { 4830 if (mMovement != null && mText instanceof Editable 4831 && mLayout != null && onCheckIsTextEditor()) { 4832 InputMethodManager imm = InputMethodManager.peekInstance(); 4833 if (imm != null) imm.showSoftInput(this, 0); 4834 } 4835 } 4836 } 4837 return super.onKeyUp(keyCode, event); 4838 4839 case KeyEvent.KEYCODE_ENTER: 4840 mEnterKeyIsDown = false; 4841 if (event.hasNoModifiers()) { 4842 if (mInputContentType != null 4843 && mInputContentType.onEditorActionListener != null 4844 && mInputContentType.enterDown) { 4845 mInputContentType.enterDown = false; 4846 if (mInputContentType.onEditorActionListener.onEditorAction( 4847 this, EditorInfo.IME_NULL, event)) { 4848 return true; 4849 } 4850 } 4851 4852 if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0 4853 || shouldAdvanceFocusOnEnter()) { 4854 /* 4855 * If there is a click listener, just call through to 4856 * super, which will invoke it. 4857 * 4858 * If there isn't a click listener, try to advance focus, 4859 * but still call through to super, which will reset the 4860 * pressed state and longpress state. (It will also 4861 * call performClick(), but that won't do anything in 4862 * this case.) 4863 */ 4864 if (mOnClickListener == null) { 4865 View v = focusSearch(FOCUS_DOWN); 4866 4867 if (v != null) { 4868 if (!v.requestFocus(FOCUS_DOWN)) { 4869 throw new IllegalStateException( 4870 "focus search returned a view " + 4871 "that wasn't able to take focus!"); 4872 } 4873 4874 /* 4875 * Return true because we handled the key; super 4876 * will return false because there was no click 4877 * listener. 4878 */ 4879 super.onKeyUp(keyCode, event); 4880 return true; 4881 } else if ((event.getFlags() 4882 & KeyEvent.FLAG_EDITOR_ACTION) != 0) { 4883 // No target for next focus, but make sure the IME 4884 // if this came from it. 4885 InputMethodManager imm = InputMethodManager.peekInstance(); 4886 if (imm != null && imm.isActive(this)) { 4887 imm.hideSoftInputFromWindow(getWindowToken(), 0); 4888 } 4889 } 4890 } 4891 } 4892 return super.onKeyUp(keyCode, event); 4893 } 4894 break; 4895 } 4896 4897 if (mInput != null) 4898 if (mInput.onKeyUp(this, (Editable) mText, keyCode, event)) 4899 return true; 4900 4901 if (mMovement != null && mLayout != null) 4902 if (mMovement.onKeyUp(this, (Spannable) mText, keyCode, event)) 4903 return true; 4904 4905 return super.onKeyUp(keyCode, event); 4906 } 4907 4908 @Override public boolean onCheckIsTextEditor() { 4909 return mInputType != EditorInfo.TYPE_NULL; 4910 } 4911 4912 @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4913 if (onCheckIsTextEditor() && isEnabled()) { 4914 if (mInputMethodState == null) { 4915 mInputMethodState = new InputMethodState(); 4916 } 4917 outAttrs.inputType = mInputType; 4918 if (mInputContentType != null) { 4919 outAttrs.imeOptions = mInputContentType.imeOptions; 4920 outAttrs.privateImeOptions = mInputContentType.privateImeOptions; 4921 outAttrs.actionLabel = mInputContentType.imeActionLabel; 4922 outAttrs.actionId = mInputContentType.imeActionId; 4923 outAttrs.extras = mInputContentType.extras; 4924 } else { 4925 outAttrs.imeOptions = EditorInfo.IME_NULL; 4926 } 4927 if (focusSearch(FOCUS_DOWN) != null) { 4928 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT; 4929 } 4930 if (focusSearch(FOCUS_UP) != null) { 4931 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS; 4932 } 4933 if ((outAttrs.imeOptions&EditorInfo.IME_MASK_ACTION) 4934 == EditorInfo.IME_ACTION_UNSPECIFIED) { 4935 if ((outAttrs.imeOptions&EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) { 4936 // An action has not been set, but the enter key will move to 4937 // the next focus, so set the action to that. 4938 outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT; 4939 } else { 4940 // An action has not been set, and there is no focus to move 4941 // to, so let's just supply a "done" action. 4942 outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE; 4943 } 4944 if (!shouldAdvanceFocusOnEnter()) { 4945 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION; 4946 } 4947 } 4948 if (isMultilineInputType(outAttrs.inputType)) { 4949 // Multi-line text editors should always show an enter key. 4950 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_ENTER_ACTION; 4951 } 4952 outAttrs.hintText = mHint; 4953 if (mText instanceof Editable) { 4954 InputConnection ic = new EditableInputConnection(this); 4955 outAttrs.initialSelStart = getSelectionStart(); 4956 outAttrs.initialSelEnd = getSelectionEnd(); 4957 outAttrs.initialCapsMode = ic.getCursorCapsMode(mInputType); 4958 return ic; 4959 } 4960 } 4961 return null; 4962 } 4963 4964 /** 4965 * If this TextView contains editable content, extract a portion of it 4966 * based on the information in <var>request</var> in to <var>outText</var>. 4967 * @return Returns true if the text was successfully extracted, else false. 4968 */ 4969 public boolean extractText(ExtractedTextRequest request, 4970 ExtractedText outText) { 4971 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 4972 EXTRACT_UNKNOWN, outText); 4973 } 4974 4975 static final int EXTRACT_NOTHING = -2; 4976 static final int EXTRACT_UNKNOWN = -1; 4977 4978 boolean extractTextInternal(ExtractedTextRequest request, 4979 int partialStartOffset, int partialEndOffset, int delta, 4980 ExtractedText outText) { 4981 final CharSequence content = mText; 4982 if (content != null) { 4983 if (partialStartOffset != EXTRACT_NOTHING) { 4984 final int N = content.length(); 4985 if (partialStartOffset < 0) { 4986 outText.partialStartOffset = outText.partialEndOffset = -1; 4987 partialStartOffset = 0; 4988 partialEndOffset = N; 4989 } else { 4990 // Now use the delta to determine the actual amount of text 4991 // we need. 4992 partialEndOffset += delta; 4993 // Adjust offsets to ensure we contain full spans. 4994 if (content instanceof Spanned) { 4995 Spanned spanned = (Spanned)content; 4996 Object[] spans = spanned.getSpans(partialStartOffset, 4997 partialEndOffset, ParcelableSpan.class); 4998 int i = spans.length; 4999 while (i > 0) { 5000 i--; 5001 int j = spanned.getSpanStart(spans[i]); 5002 if (j < partialStartOffset) partialStartOffset = j; 5003 j = spanned.getSpanEnd(spans[i]); 5004 if (j > partialEndOffset) partialEndOffset = j; 5005 } 5006 } 5007 outText.partialStartOffset = partialStartOffset; 5008 outText.partialEndOffset = partialEndOffset - delta; 5009 5010 if (partialStartOffset > N) { 5011 partialStartOffset = N; 5012 } else if (partialStartOffset < 0) { 5013 partialStartOffset = 0; 5014 } 5015 if (partialEndOffset > N) { 5016 partialEndOffset = N; 5017 } else if (partialEndOffset < 0) { 5018 partialEndOffset = 0; 5019 } 5020 } 5021 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 5022 outText.text = content.subSequence(partialStartOffset, 5023 partialEndOffset); 5024 } else { 5025 outText.text = TextUtils.substring(content, partialStartOffset, 5026 partialEndOffset); 5027 } 5028 } else { 5029 outText.partialStartOffset = 0; 5030 outText.partialEndOffset = 0; 5031 outText.text = ""; 5032 } 5033 outText.flags = 0; 5034 if (MetaKeyKeyListener.getMetaState(mText, MetaKeyKeyListener.META_SELECTING) != 0) { 5035 outText.flags |= ExtractedText.FLAG_SELECTING; 5036 } 5037 if (mSingleLine) { 5038 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 5039 } 5040 outText.startOffset = 0; 5041 outText.selectionStart = getSelectionStart(); 5042 outText.selectionEnd = getSelectionEnd(); 5043 return true; 5044 } 5045 return false; 5046 } 5047 5048 boolean reportExtractedText() { 5049 final InputMethodState ims = mInputMethodState; 5050 if (ims != null) { 5051 final boolean contentChanged = ims.mContentChanged; 5052 if (contentChanged || ims.mSelectionModeChanged) { 5053 ims.mContentChanged = false; 5054 ims.mSelectionModeChanged = false; 5055 final ExtractedTextRequest req = mInputMethodState.mExtracting; 5056 if (req != null) { 5057 InputMethodManager imm = InputMethodManager.peekInstance(); 5058 if (imm != null) { 5059 if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Retrieving extracted start=" 5060 + ims.mChangedStart + " end=" + ims.mChangedEnd 5061 + " delta=" + ims.mChangedDelta); 5062 if (ims.mChangedStart < 0 && !contentChanged) { 5063 ims.mChangedStart = EXTRACT_NOTHING; 5064 } 5065 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 5066 ims.mChangedDelta, ims.mTmpExtracted)) { 5067 if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Reporting extracted start=" 5068 + ims.mTmpExtracted.partialStartOffset 5069 + " end=" + ims.mTmpExtracted.partialEndOffset 5070 + ": " + ims.mTmpExtracted.text); 5071 imm.updateExtractedText(this, req.token, 5072 mInputMethodState.mTmpExtracted); 5073 ims.mChangedStart = EXTRACT_UNKNOWN; 5074 ims.mChangedEnd = EXTRACT_UNKNOWN; 5075 ims.mChangedDelta = 0; 5076 ims.mContentChanged = false; 5077 return true; 5078 } 5079 } 5080 } 5081 } 5082 } 5083 return false; 5084 } 5085 5086 /** 5087 * This is used to remove all style-impacting spans from text before new 5088 * extracted text is being replaced into it, so that we don't have any 5089 * lingering spans applied during the replace. 5090 */ 5091 static void removeParcelableSpans(Spannable spannable, int start, int end) { 5092 Object[] spans = spannable.getSpans(start, end, ParcelableSpan.class); 5093 int i = spans.length; 5094 while (i > 0) { 5095 i--; 5096 spannable.removeSpan(spans[i]); 5097 } 5098 } 5099 5100 /** 5101 * Apply to this text view the given extracted text, as previously 5102 * returned by {@link #extractText(ExtractedTextRequest, ExtractedText)}. 5103 */ 5104 public void setExtractedText(ExtractedText text) { 5105 Editable content = getEditableText(); 5106 if (text.text != null) { 5107 if (content == null) { 5108 setText(text.text, TextView.BufferType.EDITABLE); 5109 } else if (text.partialStartOffset < 0) { 5110 removeParcelableSpans(content, 0, content.length()); 5111 content.replace(0, content.length(), text.text); 5112 } else { 5113 final int N = content.length(); 5114 int start = text.partialStartOffset; 5115 if (start > N) start = N; 5116 int end = text.partialEndOffset; 5117 if (end > N) end = N; 5118 removeParcelableSpans(content, start, end); 5119 content.replace(start, end, text.text); 5120 } 5121 } 5122 5123 // Now set the selection position... make sure it is in range, to 5124 // avoid crashes. If this is a partial update, it is possible that 5125 // the underlying text may have changed, causing us problems here. 5126 // Also we just don't want to trust clients to do the right thing. 5127 Spannable sp = (Spannable)getText(); 5128 final int N = sp.length(); 5129 int start = text.selectionStart; 5130 if (start < 0) start = 0; 5131 else if (start > N) start = N; 5132 int end = text.selectionEnd; 5133 if (end < 0) end = 0; 5134 else if (end > N) end = N; 5135 Selection.setSelection(sp, start, end); 5136 5137 // Finally, update the selection mode. 5138 if ((text.flags&ExtractedText.FLAG_SELECTING) != 0) { 5139 MetaKeyKeyListener.startSelecting(this, sp); 5140 } else { 5141 MetaKeyKeyListener.stopSelecting(this, sp); 5142 } 5143 } 5144 5145 /** 5146 * @hide 5147 */ 5148 public void setExtracting(ExtractedTextRequest req) { 5149 if (mInputMethodState != null) { 5150 mInputMethodState.mExtracting = req; 5151 } 5152 // This stops a possible text selection mode. Maybe not intended. 5153 hideControllers(); 5154 } 5155 5156 /** 5157 * Called by the framework in response to a text completion from 5158 * the current input method, provided by it calling 5159 * {@link InputConnection#commitCompletion 5160 * InputConnection.commitCompletion()}. The default implementation does 5161 * nothing; text views that are supporting auto-completion should override 5162 * this to do their desired behavior. 5163 * 5164 * @param text The auto complete text the user has selected. 5165 */ 5166 public void onCommitCompletion(CompletionInfo text) { 5167 } 5168 5169 /** 5170 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 5171 * a dictionnary) from the current input method, provided by it calling 5172 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 5173 * implementation flashes the background of the corrected word to provide feedback to the user. 5174 * 5175 * @param info The auto correct info about the text that was corrected. 5176 */ 5177 public void onCommitCorrection(CorrectionInfo info) { 5178 if (mCorrectionHighlighter == null) { 5179 mCorrectionHighlighter = new CorrectionHighlighter(); 5180 } else { 5181 mCorrectionHighlighter.invalidate(false); 5182 } 5183 5184 mCorrectionHighlighter.highlight(info); 5185 } 5186 5187 private class CorrectionHighlighter { 5188 private final Path mPath = new Path(); 5189 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 5190 private int mStart, mEnd; 5191 private long mFadingStartTime; 5192 private final static int FADE_OUT_DURATION = 400; 5193 5194 public CorrectionHighlighter() { 5195 mPaint.setCompatibilityScaling(getResources().getCompatibilityInfo().applicationScale); 5196 mPaint.setStyle(Paint.Style.FILL); 5197 } 5198 5199 public void highlight(CorrectionInfo info) { 5200 mStart = info.getOffset(); 5201 mEnd = mStart + info.getNewText().length(); 5202 mFadingStartTime = SystemClock.uptimeMillis(); 5203 5204 if (mStart < 0 || mEnd < 0) { 5205 stopAnimation(); 5206 } 5207 } 5208 5209 public void draw(Canvas canvas, int cursorOffsetVertical) { 5210 if (updatePath() && updatePaint()) { 5211 if (cursorOffsetVertical != 0) { 5212 canvas.translate(0, cursorOffsetVertical); 5213 } 5214 5215 canvas.drawPath(mPath, mPaint); 5216 5217 if (cursorOffsetVertical != 0) { 5218 canvas.translate(0, -cursorOffsetVertical); 5219 } 5220 invalidate(true); 5221 } else { 5222 stopAnimation(); 5223 invalidate(false); 5224 } 5225 } 5226 5227 private boolean updatePaint() { 5228 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 5229 if (duration > FADE_OUT_DURATION) return false; 5230 5231 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 5232 final int highlightColorAlpha = Color.alpha(mHighlightColor); 5233 final int color = (mHighlightColor & 0x00FFFFFF) + 5234 ((int) (highlightColorAlpha * coef) << 24); 5235 mPaint.setColor(color); 5236 return true; 5237 } 5238 5239 private boolean updatePath() { 5240 final Layout layout = TextView.this.mLayout; 5241 if (layout == null) return false; 5242 5243 // Update in case text is edited while the animation is run 5244 final int length = mText.length(); 5245 int start = Math.min(length, mStart); 5246 int end = Math.min(length, mEnd); 5247 5248 mPath.reset(); 5249 TextView.this.mLayout.getSelectionPath(start, end, mPath); 5250 return true; 5251 } 5252 5253 private void invalidate(boolean delayed) { 5254 if (TextView.this.mLayout == null) return; 5255 5256 synchronized (sTempRect) { 5257 mPath.computeBounds(sTempRect, false); 5258 5259 int left = getCompoundPaddingLeft(); 5260 int top = getExtendedPaddingTop() + getVerticalOffset(true); 5261 5262 if (delayed) { 5263 TextView.this.postInvalidateDelayed(16, // 60 Hz update 5264 left + (int) sTempRect.left, top + (int) sTempRect.top, 5265 left + (int) sTempRect.right, top + (int) sTempRect.bottom); 5266 } else { 5267 TextView.this.postInvalidate((int) sTempRect.left, (int) sTempRect.top, 5268 (int) sTempRect.right, (int) sTempRect.bottom); 5269 } 5270 } 5271 } 5272 5273 private void stopAnimation() { 5274 TextView.this.mCorrectionHighlighter = null; 5275 } 5276 } 5277 5278 public void beginBatchEdit() { 5279 mInBatchEditControllers = true; 5280 final InputMethodState ims = mInputMethodState; 5281 if (ims != null) { 5282 int nesting = ++ims.mBatchEditNesting; 5283 if (nesting == 1) { 5284 ims.mCursorChanged = false; 5285 ims.mChangedDelta = 0; 5286 if (ims.mContentChanged) { 5287 // We already have a pending change from somewhere else, 5288 // so turn this into a full update. 5289 ims.mChangedStart = 0; 5290 ims.mChangedEnd = mText.length(); 5291 } else { 5292 ims.mChangedStart = EXTRACT_UNKNOWN; 5293 ims.mChangedEnd = EXTRACT_UNKNOWN; 5294 ims.mContentChanged = false; 5295 } 5296 onBeginBatchEdit(); 5297 } 5298 } 5299 } 5300 5301 public void endBatchEdit() { 5302 mInBatchEditControllers = false; 5303 final InputMethodState ims = mInputMethodState; 5304 if (ims != null) { 5305 int nesting = --ims.mBatchEditNesting; 5306 if (nesting == 0) { 5307 finishBatchEdit(ims); 5308 } 5309 } 5310 } 5311 5312 void ensureEndedBatchEdit() { 5313 final InputMethodState ims = mInputMethodState; 5314 if (ims != null && ims.mBatchEditNesting != 0) { 5315 ims.mBatchEditNesting = 0; 5316 finishBatchEdit(ims); 5317 } 5318 } 5319 5320 void finishBatchEdit(final InputMethodState ims) { 5321 onEndBatchEdit(); 5322 5323 if (ims.mContentChanged || ims.mSelectionModeChanged) { 5324 updateAfterEdit(); 5325 reportExtractedText(); 5326 } else if (ims.mCursorChanged) { 5327 // Cheezy way to get us to report the current cursor location. 5328 invalidateCursor(); 5329 } 5330 } 5331 5332 void updateAfterEdit() { 5333 invalidate(); 5334 int curs = getSelectionStart(); 5335 5336 if (curs >= 0 || (mGravity & Gravity.VERTICAL_GRAVITY_MASK) == 5337 Gravity.BOTTOM) { 5338 registerForPreDraw(); 5339 } 5340 5341 if (curs >= 0) { 5342 mHighlightPathBogus = true; 5343 5344 if (isFocused()) { 5345 mShowCursor = SystemClock.uptimeMillis(); 5346 makeBlink(); 5347 } 5348 } 5349 5350 checkForResize(); 5351 } 5352 5353 /** 5354 * Called by the framework in response to a request to begin a batch 5355 * of edit operations through a call to link {@link #beginBatchEdit()}. 5356 */ 5357 public void onBeginBatchEdit() { 5358 } 5359 5360 /** 5361 * Called by the framework in response to a request to end a batch 5362 * of edit operations through a call to link {@link #endBatchEdit}. 5363 */ 5364 public void onEndBatchEdit() { 5365 } 5366 5367 /** 5368 * Called by the framework in response to a private command from the 5369 * current method, provided by it calling 5370 * {@link InputConnection#performPrivateCommand 5371 * InputConnection.performPrivateCommand()}. 5372 * 5373 * @param action The action name of the command. 5374 * @param data Any additional data for the command. This may be null. 5375 * @return Return true if you handled the command, else false. 5376 */ 5377 public boolean onPrivateIMECommand(String action, Bundle data) { 5378 return false; 5379 } 5380 5381 private void nullLayouts() { 5382 if (mLayout instanceof BoringLayout && mSavedLayout == null) { 5383 mSavedLayout = (BoringLayout) mLayout; 5384 } 5385 if (mHintLayout instanceof BoringLayout && mSavedHintLayout == null) { 5386 mSavedHintLayout = (BoringLayout) mHintLayout; 5387 } 5388 5389 mLayout = mHintLayout = null; 5390 5391 // Since it depends on the value of mLayout 5392 prepareCursorControllers(); 5393 } 5394 5395 /** 5396 * Make a new Layout based on the already-measured size of the view, 5397 * on the assumption that it was measured correctly at some point. 5398 */ 5399 private void assumeLayout() { 5400 int width = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(); 5401 5402 if (width < 1) { 5403 width = 0; 5404 } 5405 5406 int physicalWidth = width; 5407 5408 if (mHorizontallyScrolling) { 5409 width = VERY_WIDE; 5410 } 5411 5412 makeNewLayout(width, physicalWidth, UNKNOWN_BORING, UNKNOWN_BORING, 5413 physicalWidth, false); 5414 } 5415 5416 /** 5417 * The width passed in is now the desired layout width, 5418 * not the full view width with padding. 5419 * {@hide} 5420 */ 5421 protected void makeNewLayout(int w, int hintWidth, 5422 BoringLayout.Metrics boring, 5423 BoringLayout.Metrics hintBoring, 5424 int ellipsisWidth, boolean bringIntoView) { 5425 stopMarquee(); 5426 5427 mHighlightPathBogus = true; 5428 5429 if (w < 0) { 5430 w = 0; 5431 } 5432 if (hintWidth < 0) { 5433 hintWidth = 0; 5434 } 5435 5436 Layout.Alignment alignment; 5437 switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 5438 case Gravity.CENTER_HORIZONTAL: 5439 alignment = Layout.Alignment.ALIGN_CENTER; 5440 break; 5441 5442 case Gravity.RIGHT: 5443 // Note, Layout resolves ALIGN_OPPOSITE to left or 5444 // right based on the paragraph direction. 5445 alignment = Layout.Alignment.ALIGN_OPPOSITE; 5446 break; 5447 5448 default: 5449 alignment = Layout.Alignment.ALIGN_NORMAL; 5450 } 5451 5452 boolean shouldEllipsize = mEllipsize != null && mInput == null; 5453 5454 if (mText instanceof Spannable) { 5455 mLayout = new DynamicLayout(mText, mTransformed, mTextPaint, w, 5456 alignment, mSpacingMult, 5457 mSpacingAdd, mIncludePad, mInput == null ? mEllipsize : null, 5458 ellipsisWidth); 5459 } else { 5460 if (boring == UNKNOWN_BORING) { 5461 boring = BoringLayout.isBoring(mTransformed, mTextPaint, 5462 mBoring); 5463 if (boring != null) { 5464 mBoring = boring; 5465 } 5466 } 5467 5468 if (boring != null) { 5469 if (boring.width <= w && 5470 (mEllipsize == null || boring.width <= ellipsisWidth)) { 5471 if (mSavedLayout != null) { 5472 mLayout = mSavedLayout. 5473 replaceOrMake(mTransformed, mTextPaint, 5474 w, alignment, mSpacingMult, mSpacingAdd, 5475 boring, mIncludePad); 5476 } else { 5477 mLayout = BoringLayout.make(mTransformed, mTextPaint, 5478 w, alignment, mSpacingMult, mSpacingAdd, 5479 boring, mIncludePad); 5480 } 5481 5482 mSavedLayout = (BoringLayout) mLayout; 5483 } else if (shouldEllipsize && boring.width <= w) { 5484 if (mSavedLayout != null) { 5485 mLayout = mSavedLayout. 5486 replaceOrMake(mTransformed, mTextPaint, 5487 w, alignment, mSpacingMult, mSpacingAdd, 5488 boring, mIncludePad, mEllipsize, 5489 ellipsisWidth); 5490 } else { 5491 mLayout = BoringLayout.make(mTransformed, mTextPaint, 5492 w, alignment, mSpacingMult, mSpacingAdd, 5493 boring, mIncludePad, mEllipsize, 5494 ellipsisWidth); 5495 } 5496 } else if (shouldEllipsize) { 5497 mLayout = new StaticLayout(mTransformed, 5498 0, mTransformed.length(), 5499 mTextPaint, w, alignment, mSpacingMult, 5500 mSpacingAdd, mIncludePad, mEllipsize, 5501 ellipsisWidth); 5502 } else { 5503 mLayout = new StaticLayout(mTransformed, mTextPaint, 5504 w, alignment, mSpacingMult, mSpacingAdd, 5505 mIncludePad); 5506 } 5507 } else if (shouldEllipsize) { 5508 mLayout = new StaticLayout(mTransformed, 5509 0, mTransformed.length(), 5510 mTextPaint, w, alignment, mSpacingMult, 5511 mSpacingAdd, mIncludePad, mEllipsize, 5512 ellipsisWidth); 5513 } else { 5514 mLayout = new StaticLayout(mTransformed, mTextPaint, 5515 w, alignment, mSpacingMult, mSpacingAdd, 5516 mIncludePad); 5517 } 5518 } 5519 5520 shouldEllipsize = mEllipsize != null; 5521 mHintLayout = null; 5522 5523 if (mHint != null) { 5524 if (shouldEllipsize) hintWidth = w; 5525 5526 if (hintBoring == UNKNOWN_BORING) { 5527 hintBoring = BoringLayout.isBoring(mHint, mTextPaint, 5528 mHintBoring); 5529 if (hintBoring != null) { 5530 mHintBoring = hintBoring; 5531 } 5532 } 5533 5534 if (hintBoring != null) { 5535 if (hintBoring.width <= hintWidth && 5536 (!shouldEllipsize || hintBoring.width <= ellipsisWidth)) { 5537 if (mSavedHintLayout != null) { 5538 mHintLayout = mSavedHintLayout. 5539 replaceOrMake(mHint, mTextPaint, 5540 hintWidth, alignment, mSpacingMult, mSpacingAdd, 5541 hintBoring, mIncludePad); 5542 } else { 5543 mHintLayout = BoringLayout.make(mHint, mTextPaint, 5544 hintWidth, alignment, mSpacingMult, mSpacingAdd, 5545 hintBoring, mIncludePad); 5546 } 5547 5548 mSavedHintLayout = (BoringLayout) mHintLayout; 5549 } else if (shouldEllipsize && hintBoring.width <= hintWidth) { 5550 if (mSavedHintLayout != null) { 5551 mHintLayout = mSavedHintLayout. 5552 replaceOrMake(mHint, mTextPaint, 5553 hintWidth, alignment, mSpacingMult, mSpacingAdd, 5554 hintBoring, mIncludePad, mEllipsize, 5555 ellipsisWidth); 5556 } else { 5557 mHintLayout = BoringLayout.make(mHint, mTextPaint, 5558 hintWidth, alignment, mSpacingMult, mSpacingAdd, 5559 hintBoring, mIncludePad, mEllipsize, 5560 ellipsisWidth); 5561 } 5562 } else if (shouldEllipsize) { 5563 mHintLayout = new StaticLayout(mHint, 5564 0, mHint.length(), 5565 mTextPaint, hintWidth, alignment, mSpacingMult, 5566 mSpacingAdd, mIncludePad, mEllipsize, 5567 ellipsisWidth); 5568 } else { 5569 mHintLayout = new StaticLayout(mHint, mTextPaint, 5570 hintWidth, alignment, mSpacingMult, mSpacingAdd, 5571 mIncludePad); 5572 } 5573 } else if (shouldEllipsize) { 5574 mHintLayout = new StaticLayout(mHint, 5575 0, mHint.length(), 5576 mTextPaint, hintWidth, alignment, mSpacingMult, 5577 mSpacingAdd, mIncludePad, mEllipsize, 5578 ellipsisWidth); 5579 } else { 5580 mHintLayout = new StaticLayout(mHint, mTextPaint, 5581 hintWidth, alignment, mSpacingMult, mSpacingAdd, 5582 mIncludePad); 5583 } 5584 } 5585 5586 if (bringIntoView) { 5587 registerForPreDraw(); 5588 } 5589 5590 if (mEllipsize == TextUtils.TruncateAt.MARQUEE) { 5591 if (!compressText(ellipsisWidth)) { 5592 final int height = mLayoutParams.height; 5593 // If the size of the view does not depend on the size of the text, try to 5594 // start the marquee immediately 5595 if (height != LayoutParams.WRAP_CONTENT && height != LayoutParams.MATCH_PARENT) { 5596 startMarquee(); 5597 } else { 5598 // Defer the start of the marquee until we know our width (see setFrame()) 5599 mRestartMarquee = true; 5600 } 5601 } 5602 } 5603 5604 // CursorControllers need a non-null mLayout 5605 prepareCursorControllers(); 5606 } 5607 5608 private boolean compressText(float width) { 5609 if (isHardwareAccelerated()) return false; 5610 5611 // Only compress the text if it hasn't been compressed by the previous pass 5612 if (width > 0.0f && mLayout != null && getLineCount() == 1 && !mUserSetTextScaleX && 5613 mTextPaint.getTextScaleX() == 1.0f) { 5614 final float textWidth = mLayout.getLineWidth(0); 5615 final float overflow = (textWidth + 1.0f - width) / width; 5616 if (overflow > 0.0f && overflow <= Marquee.MARQUEE_DELTA_MAX) { 5617 mTextPaint.setTextScaleX(1.0f - overflow - 0.005f); 5618 post(new Runnable() { 5619 public void run() { 5620 requestLayout(); 5621 } 5622 }); 5623 return true; 5624 } 5625 } 5626 5627 return false; 5628 } 5629 5630 private static int desired(Layout layout) { 5631 int n = layout.getLineCount(); 5632 CharSequence text = layout.getText(); 5633 float max = 0; 5634 5635 // if any line was wrapped, we can't use it. 5636 // but it's ok for the last line not to have a newline 5637 5638 for (int i = 0; i < n - 1; i++) { 5639 if (text.charAt(layout.getLineEnd(i) - 1) != '\n') 5640 return -1; 5641 } 5642 5643 for (int i = 0; i < n; i++) { 5644 max = Math.max(max, layout.getLineWidth(i)); 5645 } 5646 5647 return (int) FloatMath.ceil(max); 5648 } 5649 5650 /** 5651 * Set whether the TextView includes extra top and bottom padding to make 5652 * room for accents that go above the normal ascent and descent. 5653 * The default is true. 5654 * 5655 * @attr ref android.R.styleable#TextView_includeFontPadding 5656 */ 5657 public void setIncludeFontPadding(boolean includepad) { 5658 mIncludePad = includepad; 5659 5660 if (mLayout != null) { 5661 nullLayouts(); 5662 requestLayout(); 5663 invalidate(); 5664 } 5665 } 5666 5667 private static final BoringLayout.Metrics UNKNOWN_BORING = new BoringLayout.Metrics(); 5668 5669 @Override 5670 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5671 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5672 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5673 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5674 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5675 5676 int width; 5677 int height; 5678 5679 BoringLayout.Metrics boring = UNKNOWN_BORING; 5680 BoringLayout.Metrics hintBoring = UNKNOWN_BORING; 5681 5682 int des = -1; 5683 boolean fromexisting = false; 5684 5685 if (widthMode == MeasureSpec.EXACTLY) { 5686 // Parent has told us how big to be. So be it. 5687 width = widthSize; 5688 } else { 5689 if (mLayout != null && mEllipsize == null) { 5690 des = desired(mLayout); 5691 } 5692 5693 if (des < 0) { 5694 boring = BoringLayout.isBoring(mTransformed, mTextPaint, mBoring); 5695 if (boring != null) { 5696 mBoring = boring; 5697 } 5698 } else { 5699 fromexisting = true; 5700 } 5701 5702 if (boring == null || boring == UNKNOWN_BORING) { 5703 if (des < 0) { 5704 des = (int) FloatMath.ceil(Layout.getDesiredWidth(mTransformed, mTextPaint)); 5705 } 5706 5707 width = des; 5708 } else { 5709 width = boring.width; 5710 } 5711 5712 final Drawables dr = mDrawables; 5713 if (dr != null) { 5714 width = Math.max(width, dr.mDrawableWidthTop); 5715 width = Math.max(width, dr.mDrawableWidthBottom); 5716 } 5717 5718 if (mHint != null) { 5719 int hintDes = -1; 5720 int hintWidth; 5721 5722 if (mHintLayout != null && mEllipsize == null) { 5723 hintDes = desired(mHintLayout); 5724 } 5725 5726 if (hintDes < 0) { 5727 hintBoring = BoringLayout.isBoring(mHint, mTextPaint, mHintBoring); 5728 if (hintBoring != null) { 5729 mHintBoring = hintBoring; 5730 } 5731 } 5732 5733 if (hintBoring == null || hintBoring == UNKNOWN_BORING) { 5734 if (hintDes < 0) { 5735 hintDes = (int) FloatMath.ceil( 5736 Layout.getDesiredWidth(mHint, mTextPaint)); 5737 } 5738 5739 hintWidth = hintDes; 5740 } else { 5741 hintWidth = hintBoring.width; 5742 } 5743 5744 if (hintWidth > width) { 5745 width = hintWidth; 5746 } 5747 } 5748 5749 width += getCompoundPaddingLeft() + getCompoundPaddingRight(); 5750 5751 if (mMaxWidthMode == EMS) { 5752 width = Math.min(width, mMaxWidth * getLineHeight()); 5753 } else { 5754 width = Math.min(width, mMaxWidth); 5755 } 5756 5757 if (mMinWidthMode == EMS) { 5758 width = Math.max(width, mMinWidth * getLineHeight()); 5759 } else { 5760 width = Math.max(width, mMinWidth); 5761 } 5762 5763 // Check against our minimum width 5764 width = Math.max(width, getSuggestedMinimumWidth()); 5765 5766 if (widthMode == MeasureSpec.AT_MOST) { 5767 width = Math.min(widthSize, width); 5768 } 5769 } 5770 5771 int want = width - getCompoundPaddingLeft() - getCompoundPaddingRight(); 5772 int unpaddedWidth = want; 5773 int hintWant = want; 5774 5775 if (mHorizontallyScrolling) 5776 want = VERY_WIDE; 5777 5778 int hintWidth = mHintLayout == null ? hintWant : mHintLayout.getWidth(); 5779 5780 if (mLayout == null) { 5781 makeNewLayout(want, hintWant, boring, hintBoring, 5782 width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false); 5783 } else if ((mLayout.getWidth() != want) || (hintWidth != hintWant) || 5784 (mLayout.getEllipsizedWidth() != 5785 width - getCompoundPaddingLeft() - getCompoundPaddingRight())) { 5786 if (mHint == null && mEllipsize == null && 5787 want > mLayout.getWidth() && 5788 (mLayout instanceof BoringLayout || 5789 (fromexisting && des >= 0 && des <= want))) { 5790 mLayout.increaseWidthTo(want); 5791 } else { 5792 makeNewLayout(want, hintWant, boring, hintBoring, 5793 width - getCompoundPaddingLeft() - getCompoundPaddingRight(), false); 5794 } 5795 } else { 5796 // Width has not changed. 5797 } 5798 5799 if (heightMode == MeasureSpec.EXACTLY) { 5800 // Parent has told us how big to be. So be it. 5801 height = heightSize; 5802 mDesiredHeightAtMeasure = -1; 5803 } else { 5804 int desired = getDesiredHeight(); 5805 5806 height = desired; 5807 mDesiredHeightAtMeasure = desired; 5808 5809 if (heightMode == MeasureSpec.AT_MOST) { 5810 height = Math.min(desired, heightSize); 5811 } 5812 } 5813 5814 int unpaddedHeight = height - getCompoundPaddingTop() - getCompoundPaddingBottom(); 5815 if (mMaxMode == LINES && mLayout.getLineCount() > mMaximum) { 5816 unpaddedHeight = Math.min(unpaddedHeight, mLayout.getLineTop(mMaximum)); 5817 } 5818 5819 /* 5820 * We didn't let makeNewLayout() register to bring the cursor into view, 5821 * so do it here if there is any possibility that it is needed. 5822 */ 5823 if (mMovement != null || 5824 mLayout.getWidth() > unpaddedWidth || 5825 mLayout.getHeight() > unpaddedHeight) { 5826 registerForPreDraw(); 5827 } else { 5828 scrollTo(0, 0); 5829 } 5830 5831 setMeasuredDimension(width, height); 5832 } 5833 5834 private int getDesiredHeight() { 5835 return Math.max( 5836 getDesiredHeight(mLayout, true), 5837 getDesiredHeight(mHintLayout, mEllipsize != null)); 5838 } 5839 5840 private int getDesiredHeight(Layout layout, boolean cap) { 5841 if (layout == null) { 5842 return 0; 5843 } 5844 5845 int linecount = layout.getLineCount(); 5846 int pad = getCompoundPaddingTop() + getCompoundPaddingBottom(); 5847 int desired = layout.getLineTop(linecount); 5848 5849 final Drawables dr = mDrawables; 5850 if (dr != null) { 5851 desired = Math.max(desired, dr.mDrawableHeightLeft); 5852 desired = Math.max(desired, dr.mDrawableHeightRight); 5853 } 5854 5855 desired += pad; 5856 5857 if (mMaxMode == LINES) { 5858 /* 5859 * Don't cap the hint to a certain number of lines. 5860 * (Do cap it, though, if we have a maximum pixel height.) 5861 */ 5862 if (cap) { 5863 if (linecount > mMaximum) { 5864 desired = layout.getLineTop(mMaximum) + 5865 layout.getBottomPadding(); 5866 5867 if (dr != null) { 5868 desired = Math.max(desired, dr.mDrawableHeightLeft); 5869 desired = Math.max(desired, dr.mDrawableHeightRight); 5870 } 5871 5872 desired += pad; 5873 linecount = mMaximum; 5874 } 5875 } 5876 } else { 5877 desired = Math.min(desired, mMaximum); 5878 } 5879 5880 if (mMinMode == LINES) { 5881 if (linecount < mMinimum) { 5882 desired += getLineHeight() * (mMinimum - linecount); 5883 } 5884 } else { 5885 desired = Math.max(desired, mMinimum); 5886 } 5887 5888 // Check against our minimum height 5889 desired = Math.max(desired, getSuggestedMinimumHeight()); 5890 5891 return desired; 5892 } 5893 5894 /** 5895 * Check whether a change to the existing text layout requires a 5896 * new view layout. 5897 */ 5898 private void checkForResize() { 5899 boolean sizeChanged = false; 5900 5901 if (mLayout != null) { 5902 // Check if our width changed 5903 if (mLayoutParams.width == LayoutParams.WRAP_CONTENT) { 5904 sizeChanged = true; 5905 invalidate(); 5906 } 5907 5908 // Check if our height changed 5909 if (mLayoutParams.height == LayoutParams.WRAP_CONTENT) { 5910 int desiredHeight = getDesiredHeight(); 5911 5912 if (desiredHeight != this.getHeight()) { 5913 sizeChanged = true; 5914 } 5915 } else if (mLayoutParams.height == LayoutParams.MATCH_PARENT) { 5916 if (mDesiredHeightAtMeasure >= 0) { 5917 int desiredHeight = getDesiredHeight(); 5918 5919 if (desiredHeight != mDesiredHeightAtMeasure) { 5920 sizeChanged = true; 5921 } 5922 } 5923 } 5924 } 5925 5926 if (sizeChanged) { 5927 requestLayout(); 5928 // caller will have already invalidated 5929 } 5930 } 5931 5932 /** 5933 * Check whether entirely new text requires a new view layout 5934 * or merely a new text layout. 5935 */ 5936 private void checkForRelayout() { 5937 // If we have a fixed width, we can just swap in a new text layout 5938 // if the text height stays the same or if the view height is fixed. 5939 5940 if ((mLayoutParams.width != LayoutParams.WRAP_CONTENT || 5941 (mMaxWidthMode == mMinWidthMode && mMaxWidth == mMinWidth)) && 5942 (mHint == null || mHintLayout != null) && 5943 (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight() > 0)) { 5944 // Static width, so try making a new text layout. 5945 5946 int oldht = mLayout.getHeight(); 5947 int want = mLayout.getWidth(); 5948 int hintWant = mHintLayout == null ? 0 : mHintLayout.getWidth(); 5949 5950 /* 5951 * No need to bring the text into view, since the size is not 5952 * changing (unless we do the requestLayout(), in which case it 5953 * will happen at measure). 5954 */ 5955 makeNewLayout(want, hintWant, UNKNOWN_BORING, UNKNOWN_BORING, 5956 mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(), 5957 false); 5958 5959 if (mEllipsize != TextUtils.TruncateAt.MARQUEE) { 5960 // In a fixed-height view, so use our new text layout. 5961 if (mLayoutParams.height != LayoutParams.WRAP_CONTENT && 5962 mLayoutParams.height != LayoutParams.MATCH_PARENT) { 5963 invalidate(); 5964 return; 5965 } 5966 5967 // Dynamic height, but height has stayed the same, 5968 // so use our new text layout. 5969 if (mLayout.getHeight() == oldht && 5970 (mHintLayout == null || mHintLayout.getHeight() == oldht)) { 5971 invalidate(); 5972 return; 5973 } 5974 } 5975 5976 // We lose: the height has changed and we have a dynamic height. 5977 // Request a new view layout using our new text layout. 5978 requestLayout(); 5979 invalidate(); 5980 } else { 5981 // Dynamic width, so we have no choice but to request a new 5982 // view layout with a new text layout. 5983 5984 nullLayouts(); 5985 requestLayout(); 5986 invalidate(); 5987 } 5988 } 5989 5990 /** 5991 * Returns true if anything changed. 5992 */ 5993 private boolean bringTextIntoView() { 5994 int line = 0; 5995 if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) { 5996 line = mLayout.getLineCount() - 1; 5997 } 5998 5999 Layout.Alignment a = mLayout.getParagraphAlignment(line); 6000 int dir = mLayout.getParagraphDirection(line); 6001 int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(); 6002 int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom(); 6003 int ht = mLayout.getHeight(); 6004 6005 int scrollx, scrolly; 6006 6007 if (a == Layout.Alignment.ALIGN_CENTER) { 6008 /* 6009 * Keep centered if possible, or, if it is too wide to fit, 6010 * keep leading edge in view. 6011 */ 6012 6013 int left = (int) FloatMath.floor(mLayout.getLineLeft(line)); 6014 int right = (int) FloatMath.ceil(mLayout.getLineRight(line)); 6015 6016 if (right - left < hspace) { 6017 scrollx = (right + left) / 2 - hspace / 2; 6018 } else { 6019 if (dir < 0) { 6020 scrollx = right - hspace; 6021 } else { 6022 scrollx = left; 6023 } 6024 } 6025 } else if (a == Layout.Alignment.ALIGN_NORMAL) { 6026 /* 6027 * Keep leading edge in view. 6028 */ 6029 6030 if (dir < 0) { 6031 int right = (int) FloatMath.ceil(mLayout.getLineRight(line)); 6032 scrollx = right - hspace; 6033 } else { 6034 scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line)); 6035 } 6036 } else /* a == Layout.Alignment.ALIGN_OPPOSITE */ { 6037 /* 6038 * Keep trailing edge in view. 6039 */ 6040 6041 if (dir < 0) { 6042 scrollx = (int) FloatMath.floor(mLayout.getLineLeft(line)); 6043 } else { 6044 int right = (int) FloatMath.ceil(mLayout.getLineRight(line)); 6045 scrollx = right - hspace; 6046 } 6047 } 6048 6049 if (ht < vspace) { 6050 scrolly = 0; 6051 } else { 6052 if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) { 6053 scrolly = ht - vspace; 6054 } else { 6055 scrolly = 0; 6056 } 6057 } 6058 6059 if (scrollx != mScrollX || scrolly != mScrollY) { 6060 scrollTo(scrollx, scrolly); 6061 return true; 6062 } else { 6063 return false; 6064 } 6065 } 6066 6067 /** 6068 * Move the point, specified by the offset, into the view if it is needed. 6069 * This has to be called after layout. Returns true if anything changed. 6070 */ 6071 public boolean bringPointIntoView(int offset) { 6072 boolean changed = false; 6073 6074 int line = mLayout.getLineForOffset(offset); 6075 6076 // FIXME: Is it okay to truncate this, or should we round? 6077 final int x = (int)mLayout.getPrimaryHorizontal(offset); 6078 final int top = mLayout.getLineTop(line); 6079 final int bottom = mLayout.getLineTop(line + 1); 6080 6081 int left = (int) FloatMath.floor(mLayout.getLineLeft(line)); 6082 int right = (int) FloatMath.ceil(mLayout.getLineRight(line)); 6083 int ht = mLayout.getHeight(); 6084 6085 int grav; 6086 6087 switch (mLayout.getParagraphAlignment(line)) { 6088 case ALIGN_NORMAL: 6089 grav = 1; 6090 break; 6091 6092 case ALIGN_OPPOSITE: 6093 grav = -1; 6094 break; 6095 6096 default: 6097 grav = 0; 6098 } 6099 6100 grav *= mLayout.getParagraphDirection(line); 6101 6102 int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(); 6103 int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom(); 6104 6105 int hslack = (bottom - top) / 2; 6106 int vslack = hslack; 6107 6108 if (vslack > vspace / 4) 6109 vslack = vspace / 4; 6110 if (hslack > hspace / 4) 6111 hslack = hspace / 4; 6112 6113 int hs = mScrollX; 6114 int vs = mScrollY; 6115 6116 if (top - vs < vslack) 6117 vs = top - vslack; 6118 if (bottom - vs > vspace - vslack) 6119 vs = bottom - (vspace - vslack); 6120 if (ht - vs < vspace) 6121 vs = ht - vspace; 6122 if (0 - vs > 0) 6123 vs = 0; 6124 6125 if (grav != 0) { 6126 if (x - hs < hslack) { 6127 hs = x - hslack; 6128 } 6129 if (x - hs > hspace - hslack) { 6130 hs = x - (hspace - hslack); 6131 } 6132 } 6133 6134 if (grav < 0) { 6135 if (left - hs > 0) 6136 hs = left; 6137 if (right - hs < hspace) 6138 hs = right - hspace; 6139 } else if (grav > 0) { 6140 if (right - hs < hspace) 6141 hs = right - hspace; 6142 if (left - hs > 0) 6143 hs = left; 6144 } else /* grav == 0 */ { 6145 if (right - left <= hspace) { 6146 /* 6147 * If the entire text fits, center it exactly. 6148 */ 6149 hs = left - (hspace - (right - left)) / 2; 6150 } else if (x > right - hslack) { 6151 /* 6152 * If we are near the right edge, keep the right edge 6153 * at the edge of the view. 6154 */ 6155 hs = right - hspace; 6156 } else if (x < left + hslack) { 6157 /* 6158 * If we are near the left edge, keep the left edge 6159 * at the edge of the view. 6160 */ 6161 hs = left; 6162 } else if (left > hs) { 6163 /* 6164 * Is there whitespace visible at the left? Fix it if so. 6165 */ 6166 hs = left; 6167 } else if (right < hs + hspace) { 6168 /* 6169 * Is there whitespace visible at the right? Fix it if so. 6170 */ 6171 hs = right - hspace; 6172 } else { 6173 /* 6174 * Otherwise, float as needed. 6175 */ 6176 if (x - hs < hslack) { 6177 hs = x - hslack; 6178 } 6179 if (x - hs > hspace - hslack) { 6180 hs = x - (hspace - hslack); 6181 } 6182 } 6183 } 6184 6185 if (hs != mScrollX || vs != mScrollY) { 6186 if (mScroller == null) { 6187 scrollTo(hs, vs); 6188 } else { 6189 long duration = AnimationUtils.currentAnimationTimeMillis() - mLastScroll; 6190 int dx = hs - mScrollX; 6191 int dy = vs - mScrollY; 6192 6193 if (duration > ANIMATED_SCROLL_GAP) { 6194 mScroller.startScroll(mScrollX, mScrollY, dx, dy); 6195 awakenScrollBars(mScroller.getDuration()); 6196 invalidate(); 6197 } else { 6198 if (!mScroller.isFinished()) { 6199 mScroller.abortAnimation(); 6200 } 6201 6202 scrollBy(dx, dy); 6203 } 6204 6205 mLastScroll = AnimationUtils.currentAnimationTimeMillis(); 6206 } 6207 6208 changed = true; 6209 } 6210 6211 if (isFocused()) { 6212 // This offsets because getInterestingRect() is in terms of 6213 // viewport coordinates, but requestRectangleOnScreen() 6214 // is in terms of content coordinates. 6215 6216 Rect r = new Rect(x, top, x + 1, bottom); 6217 getInterestingRect(r, line); 6218 r.offset(mScrollX, mScrollY); 6219 6220 if (requestRectangleOnScreen(r)) { 6221 changed = true; 6222 } 6223 } 6224 6225 return changed; 6226 } 6227 6228 /** 6229 * Move the cursor, if needed, so that it is at an offset that is visible 6230 * to the user. This will not move the cursor if it represents more than 6231 * one character (a selection range). This will only work if the 6232 * TextView contains spannable text; otherwise it will do nothing. 6233 * 6234 * @return True if the cursor was actually moved, false otherwise. 6235 */ 6236 public boolean moveCursorToVisibleOffset() { 6237 if (!(mText instanceof Spannable)) { 6238 return false; 6239 } 6240 int start = getSelectionStart(); 6241 int end = getSelectionEnd(); 6242 if (start != end) { 6243 return false; 6244 } 6245 6246 // First: make sure the line is visible on screen: 6247 6248 int line = mLayout.getLineForOffset(start); 6249 6250 final int top = mLayout.getLineTop(line); 6251 final int bottom = mLayout.getLineTop(line + 1); 6252 final int vspace = mBottom - mTop - getExtendedPaddingTop() - getExtendedPaddingBottom(); 6253 int vslack = (bottom - top) / 2; 6254 if (vslack > vspace / 4) 6255 vslack = vspace / 4; 6256 final int vs = mScrollY; 6257 6258 if (top < (vs+vslack)) { 6259 line = mLayout.getLineForVertical(vs+vslack+(bottom-top)); 6260 } else if (bottom > (vspace+vs-vslack)) { 6261 line = mLayout.getLineForVertical(vspace+vs-vslack-(bottom-top)); 6262 } 6263 6264 // Next: make sure the character is visible on screen: 6265 6266 final int hspace = mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight(); 6267 final int hs = mScrollX; 6268 final int leftChar = mLayout.getOffsetForHorizontal(line, hs); 6269 final int rightChar = mLayout.getOffsetForHorizontal(line, hspace+hs); 6270 6271 // line might contain bidirectional text 6272 final int lowChar = leftChar < rightChar ? leftChar : rightChar; 6273 final int highChar = leftChar > rightChar ? leftChar : rightChar; 6274 6275 int newStart = start; 6276 if (newStart < lowChar) { 6277 newStart = lowChar; 6278 } else if (newStart > highChar) { 6279 newStart = highChar; 6280 } 6281 6282 if (newStart != start) { 6283 Selection.setSelection((Spannable)mText, newStart); 6284 return true; 6285 } 6286 6287 return false; 6288 } 6289 6290 @Override 6291 public void computeScroll() { 6292 if (mScroller != null) { 6293 if (mScroller.computeScrollOffset()) { 6294 mScrollX = mScroller.getCurrX(); 6295 mScrollY = mScroller.getCurrY(); 6296 invalidateParentCaches(); 6297 postInvalidate(); // So we draw again 6298 } 6299 } 6300 } 6301 6302 private void getInterestingRect(Rect r, int line) { 6303 convertFromViewportToContentCoordinates(r); 6304 6305 // Rectangle can can be expanded on first and last line to take 6306 // padding into account. 6307 // TODO Take left/right padding into account too? 6308 if (line == 0) r.top -= getExtendedPaddingTop(); 6309 if (line == mLayout.getLineCount() - 1) r.bottom += getExtendedPaddingBottom(); 6310 } 6311 6312 private void convertFromViewportToContentCoordinates(Rect r) { 6313 final int horizontalOffset = viewportToContentHorizontalOffset(); 6314 r.left += horizontalOffset; 6315 r.right += horizontalOffset; 6316 6317 final int verticalOffset = viewportToContentVerticalOffset(); 6318 r.top += verticalOffset; 6319 r.bottom += verticalOffset; 6320 } 6321 6322 private int viewportToContentHorizontalOffset() { 6323 return getCompoundPaddingLeft() - mScrollX; 6324 } 6325 6326 private int viewportToContentVerticalOffset() { 6327 int offset = getExtendedPaddingTop() - mScrollY; 6328 if ((mGravity & Gravity.VERTICAL_GRAVITY_MASK) != Gravity.TOP) { 6329 offset += getVerticalOffset(false); 6330 } 6331 return offset; 6332 } 6333 6334 @Override 6335 public void debug(int depth) { 6336 super.debug(depth); 6337 6338 String output = debugIndent(depth); 6339 output += "frame={" + mLeft + ", " + mTop + ", " + mRight 6340 + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY 6341 + "} "; 6342 6343 if (mText != null) { 6344 6345 output += "mText=\"" + mText + "\" "; 6346 if (mLayout != null) { 6347 output += "mLayout width=" + mLayout.getWidth() 6348 + " height=" + mLayout.getHeight(); 6349 } 6350 } else { 6351 output += "mText=NULL"; 6352 } 6353 Log.d(VIEW_LOG_TAG, output); 6354 } 6355 6356 /** 6357 * Convenience for {@link Selection#getSelectionStart}. 6358 */ 6359 @ViewDebug.ExportedProperty(category = "text") 6360 public int getSelectionStart() { 6361 return Selection.getSelectionStart(getText()); 6362 } 6363 6364 /** 6365 * Convenience for {@link Selection#getSelectionEnd}. 6366 */ 6367 @ViewDebug.ExportedProperty(category = "text") 6368 public int getSelectionEnd() { 6369 return Selection.getSelectionEnd(getText()); 6370 } 6371 6372 /** 6373 * Return true iff there is a selection inside this text view. 6374 */ 6375 public boolean hasSelection() { 6376 final int selectionStart = getSelectionStart(); 6377 final int selectionEnd = getSelectionEnd(); 6378 6379 return selectionStart >= 0 && selectionStart != selectionEnd; 6380 } 6381 6382 /** 6383 * Sets the properties of this field (lines, horizontally scrolling, 6384 * transformation method) to be for a single-line input. 6385 * 6386 * @attr ref android.R.styleable#TextView_singleLine 6387 */ 6388 public void setSingleLine() { 6389 setSingleLine(true); 6390 } 6391 6392 /** 6393 * If true, sets the properties of this field (number of lines, horizontally scrolling, 6394 * transformation method) to be for a single-line input; if false, restores these to the default 6395 * conditions. 6396 * 6397 * Note that the default conditions are not necessarily those that were in effect prior this 6398 * method, and you may want to reset these properties to your custom values. 6399 * 6400 * @attr ref android.R.styleable#TextView_singleLine 6401 */ 6402 @android.view.RemotableViewMethod 6403 public void setSingleLine(boolean singleLine) { 6404 // Could be used, but may break backward compatibility. 6405 // if (mSingleLine == singleLine) return; 6406 setInputTypeSingleLine(singleLine); 6407 applySingleLine(singleLine, true, true); 6408 } 6409 6410 /** 6411 * Adds or remove the EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE on the mInputType. 6412 * @param singleLine 6413 */ 6414 private void setInputTypeSingleLine(boolean singleLine) { 6415 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 6416 if (singleLine) { 6417 mInputType &= ~EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE; 6418 } else { 6419 mInputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE; 6420 } 6421 } 6422 } 6423 6424 private void applySingleLine(boolean singleLine, boolean applyTransformation, 6425 boolean changeMaxLines) { 6426 mSingleLine = singleLine; 6427 if (singleLine) { 6428 setLines(1); 6429 setHorizontallyScrolling(true); 6430 if (applyTransformation) { 6431 setTransformationMethod(SingleLineTransformationMethod.getInstance()); 6432 } 6433 // TODO setState 6434 } else { 6435 if (changeMaxLines) { 6436 setMaxLines(Integer.MAX_VALUE); 6437 } 6438 setHorizontallyScrolling(false); 6439 if (applyTransformation) { 6440 setTransformationMethod(null); 6441 } 6442 // TODO setState 6443 } 6444 } 6445 6446 /** 6447 * Causes words in the text that are longer than the view is wide 6448 * to be ellipsized instead of broken in the middle. You may also 6449 * want to {@link #setSingleLine} or {@link #setHorizontallyScrolling} 6450 * to constrain the text to a single line. Use <code>null</code> 6451 * to turn off ellipsizing. 6452 * 6453 * @attr ref android.R.styleable#TextView_ellipsize 6454 */ 6455 public void setEllipsize(TextUtils.TruncateAt where) { 6456 mEllipsize = where; 6457 6458 if (mLayout != null) { 6459 nullLayouts(); 6460 requestLayout(); 6461 invalidate(); 6462 } 6463 } 6464 6465 /** 6466 * Sets how many times to repeat the marquee animation. Only applied if the 6467 * TextView has marquee enabled. Set to -1 to repeat indefinitely. 6468 * 6469 * @attr ref android.R.styleable#TextView_marqueeRepeatLimit 6470 */ 6471 public void setMarqueeRepeatLimit(int marqueeLimit) { 6472 mMarqueeRepeatLimit = marqueeLimit; 6473 } 6474 6475 /** 6476 * Returns where, if anywhere, words that are longer than the view 6477 * is wide should be ellipsized. 6478 */ 6479 @ViewDebug.ExportedProperty 6480 public TextUtils.TruncateAt getEllipsize() { 6481 return mEllipsize; 6482 } 6483 6484 /** 6485 * Set the TextView so that when it takes focus, all the text is 6486 * selected. 6487 * 6488 * @attr ref android.R.styleable#TextView_selectAllOnFocus 6489 */ 6490 @android.view.RemotableViewMethod 6491 public void setSelectAllOnFocus(boolean selectAllOnFocus) { 6492 mSelectAllOnFocus = selectAllOnFocus; 6493 6494 if (selectAllOnFocus && !(mText instanceof Spannable)) { 6495 setText(mText, BufferType.SPANNABLE); 6496 } 6497 } 6498 6499 /** 6500 * Set whether the cursor is visible. The default is true. 6501 * 6502 * @attr ref android.R.styleable#TextView_cursorVisible 6503 */ 6504 @android.view.RemotableViewMethod 6505 public void setCursorVisible(boolean visible) { 6506 mCursorVisible = visible; 6507 invalidate(); 6508 6509 makeBlink(); 6510 6511 // InsertionPointCursorController depends on mCursorVisible 6512 prepareCursorControllers(); 6513 } 6514 6515 private boolean isCursorVisible() { 6516 return mCursorVisible && isTextEditable(); 6517 } 6518 6519 private boolean canMarquee() { 6520 int width = (mRight - mLeft - getCompoundPaddingLeft() - getCompoundPaddingRight()); 6521 return width > 0 && mLayout.getLineWidth(0) > width; 6522 } 6523 6524 private void startMarquee() { 6525 // Do not ellipsize EditText 6526 if (mInput != null) return; 6527 6528 if (compressText(getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight())) { 6529 return; 6530 } 6531 6532 if ((mMarquee == null || mMarquee.isStopped()) && (isFocused() || isSelected()) && 6533 getLineCount() == 1 && canMarquee()) { 6534 6535 if (mMarquee == null) mMarquee = new Marquee(this); 6536 mMarquee.start(mMarqueeRepeatLimit); 6537 } 6538 } 6539 6540 private void stopMarquee() { 6541 if (mMarquee != null && !mMarquee.isStopped()) { 6542 mMarquee.stop(); 6543 } 6544 } 6545 6546 private void startStopMarquee(boolean start) { 6547 if (mEllipsize == TextUtils.TruncateAt.MARQUEE) { 6548 if (start) { 6549 startMarquee(); 6550 } else { 6551 stopMarquee(); 6552 } 6553 } 6554 } 6555 6556 private static final class Marquee extends Handler { 6557 // TODO: Add an option to configure this 6558 private static final float MARQUEE_DELTA_MAX = 0.07f; 6559 private static final int MARQUEE_DELAY = 1200; 6560 private static final int MARQUEE_RESTART_DELAY = 1200; 6561 private static final int MARQUEE_RESOLUTION = 1000 / 30; 6562 private static final int MARQUEE_PIXELS_PER_SECOND = 30; 6563 6564 private static final byte MARQUEE_STOPPED = 0x0; 6565 private static final byte MARQUEE_STARTING = 0x1; 6566 private static final byte MARQUEE_RUNNING = 0x2; 6567 6568 private static final int MESSAGE_START = 0x1; 6569 private static final int MESSAGE_TICK = 0x2; 6570 private static final int MESSAGE_RESTART = 0x3; 6571 6572 private final WeakReference<TextView> mView; 6573 6574 private byte mStatus = MARQUEE_STOPPED; 6575 private final float mScrollUnit; 6576 private float mMaxScroll; 6577 float mMaxFadeScroll; 6578 private float mGhostStart; 6579 private float mGhostOffset; 6580 private float mFadeStop; 6581 private int mRepeatLimit; 6582 6583 float mScroll; 6584 6585 Marquee(TextView v) { 6586 final float density = v.getContext().getResources().getDisplayMetrics().density; 6587 mScrollUnit = (MARQUEE_PIXELS_PER_SECOND * density) / MARQUEE_RESOLUTION; 6588 mView = new WeakReference<TextView>(v); 6589 } 6590 6591 @Override 6592 public void handleMessage(Message msg) { 6593 switch (msg.what) { 6594 case MESSAGE_START: 6595 mStatus = MARQUEE_RUNNING; 6596 tick(); 6597 break; 6598 case MESSAGE_TICK: 6599 tick(); 6600 break; 6601 case MESSAGE_RESTART: 6602 if (mStatus == MARQUEE_RUNNING) { 6603 if (mRepeatLimit >= 0) { 6604 mRepeatLimit--; 6605 } 6606 start(mRepeatLimit); 6607 } 6608 break; 6609 } 6610 } 6611 6612 void tick() { 6613 if (mStatus != MARQUEE_RUNNING) { 6614 return; 6615 } 6616 6617 removeMessages(MESSAGE_TICK); 6618 6619 final TextView textView = mView.get(); 6620 if (textView != null && (textView.isFocused() || textView.isSelected())) { 6621 mScroll += mScrollUnit; 6622 if (mScroll > mMaxScroll) { 6623 mScroll = mMaxScroll; 6624 sendEmptyMessageDelayed(MESSAGE_RESTART, MARQUEE_RESTART_DELAY); 6625 } else { 6626 sendEmptyMessageDelayed(MESSAGE_TICK, MARQUEE_RESOLUTION); 6627 } 6628 textView.invalidate(); 6629 } 6630 } 6631 6632 void stop() { 6633 mStatus = MARQUEE_STOPPED; 6634 removeMessages(MESSAGE_START); 6635 removeMessages(MESSAGE_RESTART); 6636 removeMessages(MESSAGE_TICK); 6637 resetScroll(); 6638 } 6639 6640 private void resetScroll() { 6641 mScroll = 0.0f; 6642 final TextView textView = mView.get(); 6643 if (textView != null) textView.invalidate(); 6644 } 6645 6646 void start(int repeatLimit) { 6647 if (repeatLimit == 0) { 6648 stop(); 6649 return; 6650 } 6651 mRepeatLimit = repeatLimit; 6652 final TextView textView = mView.get(); 6653 if (textView != null && textView.mLayout != null) { 6654 mStatus = MARQUEE_STARTING; 6655 mScroll = 0.0f; 6656 final int textWidth = textView.getWidth() - textView.getCompoundPaddingLeft() - 6657 textView.getCompoundPaddingRight(); 6658 final float lineWidth = textView.mLayout.getLineWidth(0); 6659 final float gap = textWidth / 3.0f; 6660 mGhostStart = lineWidth - textWidth + gap; 6661 mMaxScroll = mGhostStart + textWidth; 6662 mGhostOffset = lineWidth + gap; 6663 mFadeStop = lineWidth + textWidth / 6.0f; 6664 mMaxFadeScroll = mGhostStart + lineWidth + lineWidth; 6665 6666 textView.invalidate(); 6667 sendEmptyMessageDelayed(MESSAGE_START, MARQUEE_DELAY); 6668 } 6669 } 6670 6671 float getGhostOffset() { 6672 return mGhostOffset; 6673 } 6674 6675 boolean shouldDrawLeftFade() { 6676 return mScroll <= mFadeStop; 6677 } 6678 6679 boolean shouldDrawGhost() { 6680 return mStatus == MARQUEE_RUNNING && mScroll > mGhostStart; 6681 } 6682 6683 boolean isRunning() { 6684 return mStatus == MARQUEE_RUNNING; 6685 } 6686 6687 boolean isStopped() { 6688 return mStatus == MARQUEE_STOPPED; 6689 } 6690 } 6691 6692 /** 6693 * This method is called when the text is changed, in case any 6694 * subclasses would like to know. 6695 * 6696 * @param text The text the TextView is displaying. 6697 * @param start The offset of the start of the range of the text 6698 * that was modified. 6699 * @param before The offset of the former end of the range of the 6700 * text that was modified. If text was simply inserted, 6701 * this will be the same as <code>start</code>. 6702 * If text was replaced with new text or deleted, the 6703 * length of the old text was <code>before-start</code>. 6704 * @param after The offset of the end of the range of the text 6705 * that was modified. If text was simply deleted, 6706 * this will be the same as <code>start</code>. 6707 * If text was replaced with new text or inserted, 6708 * the length of the new text is <code>after-start</code>. 6709 */ 6710 protected void onTextChanged(CharSequence text, 6711 int start, int before, int after) { 6712 } 6713 6714 /** 6715 * This method is called when the selection has changed, in case any 6716 * subclasses would like to know. 6717 * 6718 * @param selStart The new selection start location. 6719 * @param selEnd The new selection end location. 6720 */ 6721 protected void onSelectionChanged(int selStart, int selEnd) { 6722 } 6723 6724 /** 6725 * Adds a TextWatcher to the list of those whose methods are called 6726 * whenever this TextView's text changes. 6727 * <p> 6728 * In 1.0, the {@link TextWatcher#afterTextChanged} method was erroneously 6729 * not called after {@link #setText} calls. Now, doing {@link #setText} 6730 * if there are any text changed listeners forces the buffer type to 6731 * Editable if it would not otherwise be and does call this method. 6732 */ 6733 public void addTextChangedListener(TextWatcher watcher) { 6734 if (mListeners == null) { 6735 mListeners = new ArrayList<TextWatcher>(); 6736 } 6737 6738 mListeners.add(watcher); 6739 } 6740 6741 /** 6742 * Removes the specified TextWatcher from the list of those whose 6743 * methods are called 6744 * whenever this TextView's text changes. 6745 */ 6746 public void removeTextChangedListener(TextWatcher watcher) { 6747 if (mListeners != null) { 6748 int i = mListeners.indexOf(watcher); 6749 6750 if (i >= 0) { 6751 mListeners.remove(i); 6752 } 6753 } 6754 } 6755 6756 private void sendBeforeTextChanged(CharSequence text, int start, int before, 6757 int after) { 6758 if (mListeners != null) { 6759 final ArrayList<TextWatcher> list = mListeners; 6760 final int count = list.size(); 6761 for (int i = 0; i < count; i++) { 6762 list.get(i).beforeTextChanged(text, start, before, after); 6763 } 6764 } 6765 } 6766 6767 /** 6768 * Not private so it can be called from an inner class without going 6769 * through a thunk. 6770 */ 6771 void sendOnTextChanged(CharSequence text, int start, int before, 6772 int after) { 6773 if (mListeners != null) { 6774 final ArrayList<TextWatcher> list = mListeners; 6775 final int count = list.size(); 6776 for (int i = 0; i < count; i++) { 6777 list.get(i).onTextChanged(text, start, before, after); 6778 } 6779 } 6780 } 6781 6782 /** 6783 * Not private so it can be called from an inner class without going 6784 * through a thunk. 6785 */ 6786 void sendAfterTextChanged(Editable text) { 6787 if (mListeners != null) { 6788 final ArrayList<TextWatcher> list = mListeners; 6789 final int count = list.size(); 6790 for (int i = 0; i < count; i++) { 6791 list.get(i).afterTextChanged(text); 6792 } 6793 } 6794 } 6795 6796 /** 6797 * Not private so it can be called from an inner class without going 6798 * through a thunk. 6799 */ 6800 void handleTextChanged(CharSequence buffer, int start, int before, int after) { 6801 final InputMethodState ims = mInputMethodState; 6802 if (ims == null || ims.mBatchEditNesting == 0) { 6803 updateAfterEdit(); 6804 } 6805 if (ims != null) { 6806 ims.mContentChanged = true; 6807 if (ims.mChangedStart < 0) { 6808 ims.mChangedStart = start; 6809 ims.mChangedEnd = start+before; 6810 } else { 6811 ims.mChangedStart = Math.min(ims.mChangedStart, start); 6812 ims.mChangedEnd = Math.max(ims.mChangedEnd, start + before - ims.mChangedDelta); 6813 } 6814 ims.mChangedDelta += after-before; 6815 } 6816 6817 sendOnTextChanged(buffer, start, before, after); 6818 onTextChanged(buffer, start, before, after); 6819 6820 // Hide the controllers if the amount of content changed 6821 if (before != after) { 6822 hideControllers(); 6823 } 6824 } 6825 6826 /** 6827 * Not private so it can be called from an inner class without going 6828 * through a thunk. 6829 */ 6830 void spanChange(Spanned buf, Object what, int oldStart, int newStart, int oldEnd, int newEnd) { 6831 // XXX Make the start and end move together if this ends up 6832 // spending too much time invalidating. 6833 6834 boolean selChanged = false; 6835 int newSelStart=-1, newSelEnd=-1; 6836 6837 final InputMethodState ims = mInputMethodState; 6838 6839 if (what == Selection.SELECTION_END) { 6840 mHighlightPathBogus = true; 6841 selChanged = true; 6842 newSelEnd = newStart; 6843 6844 if (!isFocused()) { 6845 mSelectionMoved = true; 6846 } 6847 6848 if (oldStart >= 0 || newStart >= 0) { 6849 invalidateCursor(Selection.getSelectionStart(buf), oldStart, newStart); 6850 registerForPreDraw(); 6851 6852 if (isFocused()) { 6853 mShowCursor = SystemClock.uptimeMillis(); 6854 makeBlink(); 6855 } 6856 } 6857 } 6858 6859 if (what == Selection.SELECTION_START) { 6860 mHighlightPathBogus = true; 6861 selChanged = true; 6862 newSelStart = newStart; 6863 6864 if (!isFocused()) { 6865 mSelectionMoved = true; 6866 } 6867 6868 if (oldStart >= 0 || newStart >= 0) { 6869 int end = Selection.getSelectionEnd(buf); 6870 invalidateCursor(end, oldStart, newStart); 6871 } 6872 } 6873 6874 if (selChanged) { 6875 if ((buf.getSpanFlags(what)&Spanned.SPAN_INTERMEDIATE) == 0) { 6876 if (newSelStart < 0) { 6877 newSelStart = Selection.getSelectionStart(buf); 6878 } 6879 if (newSelEnd < 0) { 6880 newSelEnd = Selection.getSelectionEnd(buf); 6881 } 6882 onSelectionChanged(newSelStart, newSelEnd); 6883 } 6884 } 6885 6886 if (what instanceof UpdateAppearance || 6887 what instanceof ParagraphStyle) { 6888 if (ims == null || ims.mBatchEditNesting == 0) { 6889 invalidate(); 6890 mHighlightPathBogus = true; 6891 checkForResize(); 6892 } else { 6893 ims.mContentChanged = true; 6894 } 6895 } 6896 6897 if (MetaKeyKeyListener.isMetaTracker(buf, what)) { 6898 mHighlightPathBogus = true; 6899 if (ims != null && MetaKeyKeyListener.isSelectingMetaTracker(buf, what)) { 6900 ims.mSelectionModeChanged = true; 6901 } 6902 6903 if (Selection.getSelectionStart(buf) >= 0) { 6904 if (ims == null || ims.mBatchEditNesting == 0) { 6905 invalidateCursor(); 6906 } else { 6907 ims.mCursorChanged = true; 6908 } 6909 } 6910 } 6911 6912 if (what instanceof ParcelableSpan) { 6913 // If this is a span that can be sent to a remote process, 6914 // the current extract editor would be interested in it. 6915 if (ims != null && ims.mExtracting != null) { 6916 if (ims.mBatchEditNesting != 0) { 6917 if (oldStart >= 0) { 6918 if (ims.mChangedStart > oldStart) { 6919 ims.mChangedStart = oldStart; 6920 } 6921 if (ims.mChangedStart > oldEnd) { 6922 ims.mChangedStart = oldEnd; 6923 } 6924 } 6925 if (newStart >= 0) { 6926 if (ims.mChangedStart > newStart) { 6927 ims.mChangedStart = newStart; 6928 } 6929 if (ims.mChangedStart > newEnd) { 6930 ims.mChangedStart = newEnd; 6931 } 6932 } 6933 } else { 6934 if (DEBUG_EXTRACT) Log.v(LOG_TAG, "Span change outside of batch: " 6935 + oldStart + "-" + oldEnd + "," 6936 + newStart + "-" + newEnd + what); 6937 ims.mContentChanged = true; 6938 } 6939 } 6940 } 6941 } 6942 6943 private class ChangeWatcher 6944 implements TextWatcher, SpanWatcher { 6945 6946 private CharSequence mBeforeText; 6947 6948 public void beforeTextChanged(CharSequence buffer, int start, 6949 int before, int after) { 6950 if (DEBUG_EXTRACT) Log.v(LOG_TAG, "beforeTextChanged start=" + start 6951 + " before=" + before + " after=" + after + ": " + buffer); 6952 6953 if (AccessibilityManager.getInstance(mContext).isEnabled() 6954 && !isPasswordInputType(mInputType) 6955 && !hasPasswordTransformationMethod()) { 6956 mBeforeText = buffer.toString(); 6957 } 6958 6959 TextView.this.sendBeforeTextChanged(buffer, start, before, after); 6960 } 6961 6962 public void onTextChanged(CharSequence buffer, int start, 6963 int before, int after) { 6964 if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onTextChanged start=" + start 6965 + " before=" + before + " after=" + after + ": " + buffer); 6966 TextView.this.handleTextChanged(buffer, start, before, after); 6967 6968 if (AccessibilityManager.getInstance(mContext).isEnabled() && 6969 (isFocused() || isSelected() && 6970 isShown())) { 6971 sendAccessibilityEventTypeViewTextChanged(mBeforeText, start, before, after); 6972 mBeforeText = null; 6973 } 6974 } 6975 6976 public void afterTextChanged(Editable buffer) { 6977 if (DEBUG_EXTRACT) Log.v(LOG_TAG, "afterTextChanged: " + buffer); 6978 TextView.this.sendAfterTextChanged(buffer); 6979 6980 if (MetaKeyKeyListener.getMetaState(buffer, 6981 MetaKeyKeyListener.META_SELECTING) != 0) { 6982 MetaKeyKeyListener.stopSelecting(TextView.this, buffer); 6983 } 6984 } 6985 6986 public void onSpanChanged(Spannable buf, 6987 Object what, int s, int e, int st, int en) { 6988 if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanChanged s=" + s + " e=" + e 6989 + " st=" + st + " en=" + en + " what=" + what + ": " + buf); 6990 TextView.this.spanChange(buf, what, s, st, e, en); 6991 } 6992 6993 public void onSpanAdded(Spannable buf, Object what, int s, int e) { 6994 if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanAdded s=" + s + " e=" + e 6995 + " what=" + what + ": " + buf); 6996 TextView.this.spanChange(buf, what, -1, s, -1, e); 6997 } 6998 6999 public void onSpanRemoved(Spannable buf, Object what, int s, int e) { 7000 if (DEBUG_EXTRACT) Log.v(LOG_TAG, "onSpanRemoved s=" + s + " e=" + e 7001 + " what=" + what + ": " + buf); 7002 TextView.this.spanChange(buf, what, s, -1, e, -1); 7003 } 7004 } 7005 7006 private void makeBlink() { 7007 if (!isCursorVisible()) { 7008 if (mBlink != null) { 7009 mBlink.removeCallbacks(mBlink); 7010 } 7011 7012 return; 7013 } 7014 7015 if (mBlink == null) 7016 mBlink = new Blink(this); 7017 7018 mBlink.removeCallbacks(mBlink); 7019 mBlink.postAtTime(mBlink, mShowCursor + BLINK); 7020 } 7021 7022 /** 7023 * @hide 7024 */ 7025 @Override 7026 public void dispatchFinishTemporaryDetach() { 7027 mDispatchTemporaryDetach = true; 7028 super.dispatchFinishTemporaryDetach(); 7029 mDispatchTemporaryDetach = false; 7030 } 7031 7032 @Override 7033 public void onStartTemporaryDetach() { 7034 super.onStartTemporaryDetach(); 7035 // Only track when onStartTemporaryDetach() is called directly, 7036 // usually because this instance is an editable field in a list 7037 if (!mDispatchTemporaryDetach) mTemporaryDetach = true; 7038 } 7039 7040 @Override 7041 public void onFinishTemporaryDetach() { 7042 super.onFinishTemporaryDetach(); 7043 // Only track when onStartTemporaryDetach() is called directly, 7044 // usually because this instance is an editable field in a list 7045 if (!mDispatchTemporaryDetach) mTemporaryDetach = false; 7046 } 7047 7048 @Override 7049 protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { 7050 if (mTemporaryDetach) { 7051 // If we are temporarily in the detach state, then do nothing. 7052 super.onFocusChanged(focused, direction, previouslyFocusedRect); 7053 return; 7054 } 7055 7056 mShowCursor = SystemClock.uptimeMillis(); 7057 7058 ensureEndedBatchEdit(); 7059 7060 if (focused) { 7061 int selStart = getSelectionStart(); 7062 int selEnd = getSelectionEnd(); 7063 7064 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 7065 // mode for these, unless there was a specific selection already started. 7066 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 7067 selEnd == mText.length(); 7068 mCreatedWithASelection = mFrozenWithFocus && hasSelection() && !isFocusHighlighted; 7069 7070 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 7071 // If a tap was used to give focus to that view, move cursor at tap position. 7072 // Has to be done before onTakeFocus, which can be overloaded. 7073 final int lastTapPosition = getLastTapPosition(); 7074 if (lastTapPosition >= 0) { 7075 Selection.setSelection((Spannable) mText, lastTapPosition); 7076 } 7077 7078 if (mMovement != null) { 7079 mMovement.onTakeFocus(this, (Spannable) mText, direction); 7080 } 7081 7082 // The DecorView does not have focus when the 'Done' ExtractEditText button is 7083 // pressed. Since it is the ViewRoot's mView, it requests focus before 7084 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 7085 // This special case ensure that we keep current selection in that case. 7086 // It would be better to know why the DecorView does not have focus at that time. 7087 if (((this instanceof ExtractEditText) || mSelectionMoved) && 7088 selStart >= 0 && selEnd >= 0) { 7089 /* 7090 * Someone intentionally set the selection, so let them 7091 * do whatever it is that they wanted to do instead of 7092 * the default on-focus behavior. We reset the selection 7093 * here instead of just skipping the onTakeFocus() call 7094 * because some movement methods do something other than 7095 * just setting the selection in theirs and we still 7096 * need to go through that path. 7097 */ 7098 Selection.setSelection((Spannable) mText, selStart, selEnd); 7099 } 7100 7101 if (mSelectAllOnFocus) { 7102 selectAll(); 7103 } 7104 7105 mTouchFocusSelected = true; 7106 } 7107 7108 mFrozenWithFocus = false; 7109 mSelectionMoved = false; 7110 7111 if (mText instanceof Spannable) { 7112 Spannable sp = (Spannable) mText; 7113 MetaKeyKeyListener.resetMetaState(sp); 7114 } 7115 7116 makeBlink(); 7117 7118 if (mError != null) { 7119 showError(); 7120 } 7121 } else { 7122 if (mError != null) { 7123 hideError(); 7124 } 7125 // Don't leave us in the middle of a batch edit. 7126 onEndBatchEdit(); 7127 7128 hideInsertionPointCursorController(); 7129 if (this instanceof ExtractEditText) { 7130 // terminateTextSelectionMode removes selection, which we want to keep when 7131 // ExtractEditText goes out of focus. 7132 final int selStart = getSelectionStart(); 7133 final int selEnd = getSelectionEnd(); 7134 terminateSelectionActionMode(); 7135 Selection.setSelection((Spannable) mText, selStart, selEnd); 7136 } else { 7137 terminateSelectionActionMode(); 7138 } 7139 7140 // No need to create the controller 7141 if (mSelectionModifierCursorController != null) { 7142 mSelectionModifierCursorController.resetTouchOffsets(); 7143 } 7144 } 7145 7146 startStopMarquee(focused); 7147 7148 if (mTransformation != null) { 7149 mTransformation.onFocusChanged(this, mText, focused, direction, previouslyFocusedRect); 7150 } 7151 7152 super.onFocusChanged(focused, direction, previouslyFocusedRect); 7153 7154 // Performed after super.onFocusChanged so that this TextView is registered and can ask for 7155 // the IME. Showing the IME while focus is moved using the D-Pad is a bad idea, however this 7156 // does not happen in that case (using the arrows on a bluetooth keyboard). 7157 if (focused && isTextEditable()) { 7158 final InputMethodManager imm = InputMethodManager.peekInstance(); 7159 if (imm != null) imm.showSoftInput(this, 0, null); 7160 } 7161 } 7162 7163 private int getLastTapPosition() { 7164 // No need to create the controller at that point, no last tap position saved 7165 if (mSelectionModifierCursorController != null) { 7166 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 7167 if (lastTapPosition >= 0) { 7168 // Safety check, should not be possible. 7169 if (lastTapPosition > mText.length()) { 7170 Log.e(LOG_TAG, "Invalid tap focus position (" + lastTapPosition + " vs " 7171 + mText.length() + ")"); 7172 lastTapPosition = mText.length(); 7173 } 7174 return lastTapPosition; 7175 } 7176 } 7177 7178 return -1; 7179 } 7180 7181 @Override 7182 public void onWindowFocusChanged(boolean hasWindowFocus) { 7183 super.onWindowFocusChanged(hasWindowFocus); 7184 7185 if (hasWindowFocus) { 7186 if (mBlink != null) { 7187 mBlink.uncancel(); 7188 7189 if (isFocused()) { 7190 mShowCursor = SystemClock.uptimeMillis(); 7191 makeBlink(); 7192 } 7193 } 7194 } else { 7195 if (mBlink != null) { 7196 mBlink.cancel(); 7197 } 7198 // Don't leave us in the middle of a batch edit. 7199 onEndBatchEdit(); 7200 if (mInputContentType != null) { 7201 mInputContentType.enterDown = false; 7202 } 7203 hideControllers(); 7204 } 7205 7206 startStopMarquee(hasWindowFocus); 7207 } 7208 7209 @Override 7210 protected void onVisibilityChanged(View changedView, int visibility) { 7211 super.onVisibilityChanged(changedView, visibility); 7212 if (visibility != VISIBLE) { 7213 hideControllers(); 7214 } 7215 } 7216 7217 /** 7218 * Use {@link BaseInputConnection#removeComposingSpans 7219 * BaseInputConnection.removeComposingSpans()} to remove any IME composing 7220 * state from this text view. 7221 */ 7222 public void clearComposingText() { 7223 if (mText instanceof Spannable) { 7224 BaseInputConnection.removeComposingSpans((Spannable)mText); 7225 } 7226 } 7227 7228 @Override 7229 public void setSelected(boolean selected) { 7230 boolean wasSelected = isSelected(); 7231 7232 super.setSelected(selected); 7233 7234 if (selected != wasSelected && mEllipsize == TextUtils.TruncateAt.MARQUEE) { 7235 if (selected) { 7236 startMarquee(); 7237 } else { 7238 stopMarquee(); 7239 } 7240 } 7241 } 7242 7243 class CommitSelectionReceiver extends ResultReceiver { 7244 private final int mPrevStart, mPrevEnd; 7245 7246 public CommitSelectionReceiver(int prevStart, int prevEnd) { 7247 super(getHandler()); 7248 mPrevStart = prevStart; 7249 mPrevEnd = prevEnd; 7250 } 7251 7252 @Override 7253 protected void onReceiveResult(int resultCode, Bundle resultData) { 7254 // If this tap was actually used to show the IMM, leave cursor or selection unchanged 7255 // by restoring its previous position. 7256 if (resultCode == InputMethodManager.RESULT_SHOWN) { 7257 final int len = mText.length(); 7258 int start = Math.min(len, mPrevStart); 7259 int end = Math.min(len, mPrevEnd); 7260 Selection.setSelection((Spannable)mText, start, end); 7261 7262 boolean selectAllGotFocus = mSelectAllOnFocus && mTouchFocusSelected; 7263 if (hasSelection() && !selectAllGotFocus) { 7264 startSelectionActionMode(); 7265 } 7266 } 7267 } 7268 } 7269 7270 @Override 7271 public boolean onTouchEvent(MotionEvent event) { 7272 final int action = event.getActionMasked(); 7273 7274 if (hasInsertionController()) { 7275 getInsertionController().onTouchEvent(event); 7276 } 7277 if (hasSelectionController()) { 7278 getSelectionController().onTouchEvent(event); 7279 } 7280 7281 if (action == MotionEvent.ACTION_DOWN) { 7282 mLastDownPositionX = (int) event.getX(); 7283 mLastDownPositionY = (int) event.getY(); 7284 7285 // Reset this state; it will be re-set if super.onTouchEvent 7286 // causes focus to move to the view. 7287 mTouchFocusSelected = false; 7288 mIgnoreActionUpEvent = false; 7289 } 7290 7291 final boolean superResult = super.onTouchEvent(event); 7292 7293 /* 7294 * Don't handle the release after a long press, because it will 7295 * move the selection away from whatever the menu action was 7296 * trying to affect. 7297 */ 7298 if (mDiscardNextActionUp && action == MotionEvent.ACTION_UP) { 7299 mDiscardNextActionUp = false; 7300 return superResult; 7301 } 7302 7303 final boolean touchIsFinished = action == MotionEvent.ACTION_UP && !mIgnoreActionUpEvent && 7304 isFocused(); 7305 7306 if ((mMovement != null || onCheckIsTextEditor()) && isEnabled() 7307 && mText instanceof Spannable && mLayout != null) { 7308 boolean handled = false; 7309 7310 // Save previous selection, in case this event is used to show the IME. 7311 int oldSelStart = getSelectionStart(); 7312 int oldSelEnd = getSelectionEnd(); 7313 7314 final int oldScrollX = mScrollX; 7315 final int oldScrollY = mScrollY; 7316 7317 if (mMovement != null) { 7318 handled |= mMovement.onTouchEvent(this, (Spannable) mText, event); 7319 } 7320 7321 if (mLinksClickable && mAutoLinkMask != 0 && mTextIsSelectable && touchIsFinished) { 7322 // The LinkMovementMethod which should handle taps on links has not been installed 7323 // to support text selection. We reproduce its behavior here to open links. 7324 ClickableSpan[] links = ((Spannable) mText).getSpans(getSelectionStart(), 7325 getSelectionEnd(), ClickableSpan.class); 7326 7327 if (links.length != 0) { 7328 links[0].onClick(this); 7329 handled = true; 7330 } 7331 } 7332 7333 if (isTextEditable() || mTextIsSelectable) { 7334 if (mScrollX != oldScrollX || mScrollY != oldScrollY) { 7335 // Hide insertion anchor while scrolling. Leave selection. 7336 hideInsertionPointCursorController(); 7337 // No need to create the controller, since there is nothing to update. 7338 if (mSelectionModifierCursorController != null && 7339 mSelectionModifierCursorController.isShowing()) { 7340 mSelectionModifierCursorController.updatePosition(); 7341 } 7342 } 7343 7344 if (touchIsFinished) { 7345 CommitSelectionReceiver csr = null; 7346 if (getSelectionStart() != oldSelStart || getSelectionEnd() != oldSelEnd || 7347 didTouchFocusSelect()) { 7348 csr = new CommitSelectionReceiver(oldSelStart, oldSelEnd); 7349 } 7350 7351 // Show the IME, except when selecting in read-only text. 7352 if (!mTextIsSelectable) { 7353 final InputMethodManager imm = InputMethodManager.peekInstance(); 7354 handled |= imm != null && imm.showSoftInput(this, 0, csr) && (csr != null); 7355 } 7356 7357 stopSelectionActionMode(); 7358 boolean selectAllGotFocus = mSelectAllOnFocus && mTouchFocusSelected; 7359 if (hasInsertionController() && !selectAllGotFocus) { 7360 getInsertionController().show(); 7361 } 7362 } 7363 } 7364 7365 if (handled) { 7366 return true; 7367 } 7368 } 7369 7370 return superResult; 7371 } 7372 7373 private void prepareCursorControllers() { 7374 boolean windowSupportsHandles = false; 7375 7376 ViewGroup.LayoutParams params = getRootView().getLayoutParams(); 7377 if (params instanceof WindowManager.LayoutParams) { 7378 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 7379 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 7380 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 7381 } 7382 7383 mInsertionControllerEnabled = windowSupportsHandles && isCursorVisible() && mLayout != null; 7384 mSelectionControllerEnabled = windowSupportsHandles && textCanBeSelected() && 7385 mLayout != null; 7386 7387 if (!mInsertionControllerEnabled) { 7388 hideInsertionPointCursorController(); 7389 mInsertionPointCursorController = null; 7390 } 7391 7392 if (!mSelectionControllerEnabled) { 7393 stopSelectionActionMode(); 7394 mSelectionModifierCursorController = null; 7395 } 7396 } 7397 7398 /** 7399 * @return True iff this TextView contains a text that can be edited, or if this is 7400 * a selectable TextView. 7401 */ 7402 private boolean isTextEditable() { 7403 return mText instanceof Editable && onCheckIsTextEditor() && isEnabled(); 7404 } 7405 7406 /** 7407 * Returns true, only while processing a touch gesture, if the initial 7408 * touch down event caused focus to move to the text view and as a result 7409 * its selection changed. Only valid while processing the touch gesture 7410 * of interest. 7411 */ 7412 public boolean didTouchFocusSelect() { 7413 return mTouchFocusSelected; 7414 } 7415 7416 @Override 7417 public void cancelLongPress() { 7418 super.cancelLongPress(); 7419 mIgnoreActionUpEvent = true; 7420 } 7421 7422 @Override 7423 public boolean onTrackballEvent(MotionEvent event) { 7424 if (mMovement != null && mText instanceof Spannable && 7425 mLayout != null) { 7426 if (mMovement.onTrackballEvent(this, (Spannable) mText, event)) { 7427 return true; 7428 } 7429 } 7430 7431 return super.onTrackballEvent(event); 7432 } 7433 7434 public void setScroller(Scroller s) { 7435 mScroller = s; 7436 } 7437 7438 private static class Blink extends Handler implements Runnable { 7439 private final WeakReference<TextView> mView; 7440 private boolean mCancelled; 7441 7442 public Blink(TextView v) { 7443 mView = new WeakReference<TextView>(v); 7444 } 7445 7446 public void run() { 7447 if (mCancelled) { 7448 return; 7449 } 7450 7451 removeCallbacks(Blink.this); 7452 7453 TextView tv = mView.get(); 7454 7455 if (tv != null && tv.isFocused()) { 7456 int st = tv.getSelectionStart(); 7457 int en = tv.getSelectionEnd(); 7458 7459 if (st == en && st >= 0 && en >= 0) { 7460 if (tv.mLayout != null) { 7461 tv.invalidateCursorPath(); 7462 } 7463 7464 postAtTime(this, SystemClock.uptimeMillis() + BLINK); 7465 } 7466 } 7467 } 7468 7469 void cancel() { 7470 if (!mCancelled) { 7471 removeCallbacks(Blink.this); 7472 mCancelled = true; 7473 } 7474 } 7475 7476 void uncancel() { 7477 mCancelled = false; 7478 } 7479 } 7480 7481 @Override 7482 protected float getLeftFadingEdgeStrength() { 7483 if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f; 7484 if (mEllipsize == TextUtils.TruncateAt.MARQUEE) { 7485 if (mMarquee != null && !mMarquee.isStopped()) { 7486 final Marquee marquee = mMarquee; 7487 if (marquee.shouldDrawLeftFade()) { 7488 return marquee.mScroll / getHorizontalFadingEdgeLength(); 7489 } else { 7490 return 0.0f; 7491 } 7492 } else if (getLineCount() == 1) { 7493 switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 7494 case Gravity.LEFT: 7495 return 0.0f; 7496 case Gravity.RIGHT: 7497 return (mLayout.getLineRight(0) - (mRight - mLeft) - 7498 getCompoundPaddingLeft() - getCompoundPaddingRight() - 7499 mLayout.getLineLeft(0)) / getHorizontalFadingEdgeLength(); 7500 case Gravity.CENTER_HORIZONTAL: 7501 return 0.0f; 7502 } 7503 } 7504 } 7505 return super.getLeftFadingEdgeStrength(); 7506 } 7507 7508 @Override 7509 protected float getRightFadingEdgeStrength() { 7510 if (mCurrentAlpha <= ViewConfiguration.ALPHA_THRESHOLD_INT) return 0.0f; 7511 if (mEllipsize == TextUtils.TruncateAt.MARQUEE) { 7512 if (mMarquee != null && !mMarquee.isStopped()) { 7513 final Marquee marquee = mMarquee; 7514 return (marquee.mMaxFadeScroll - marquee.mScroll) / getHorizontalFadingEdgeLength(); 7515 } else if (getLineCount() == 1) { 7516 switch (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 7517 case Gravity.LEFT: 7518 final int textWidth = (mRight - mLeft) - getCompoundPaddingLeft() - 7519 getCompoundPaddingRight(); 7520 final float lineWidth = mLayout.getLineWidth(0); 7521 return (lineWidth - textWidth) / getHorizontalFadingEdgeLength(); 7522 case Gravity.RIGHT: 7523 return 0.0f; 7524 case Gravity.CENTER_HORIZONTAL: 7525 case Gravity.FILL_HORIZONTAL: 7526 return (mLayout.getLineWidth(0) - ((mRight - mLeft) - 7527 getCompoundPaddingLeft() - getCompoundPaddingRight())) / 7528 getHorizontalFadingEdgeLength(); 7529 } 7530 } 7531 } 7532 return super.getRightFadingEdgeStrength(); 7533 } 7534 7535 @Override 7536 protected int computeHorizontalScrollRange() { 7537 if (mLayout != null) { 7538 return mSingleLine && (mGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT ? 7539 (int) mLayout.getLineWidth(0) : mLayout.getWidth(); 7540 } 7541 7542 return super.computeHorizontalScrollRange(); 7543 } 7544 7545 @Override 7546 protected int computeVerticalScrollRange() { 7547 if (mLayout != null) 7548 return mLayout.getHeight(); 7549 7550 return super.computeVerticalScrollRange(); 7551 } 7552 7553 @Override 7554 protected int computeVerticalScrollExtent() { 7555 return getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom(); 7556 } 7557 7558 public enum BufferType { 7559 NORMAL, SPANNABLE, EDITABLE, 7560 } 7561 7562 /** 7563 * Returns the TextView_textColor attribute from the 7564 * Resources.StyledAttributes, if set, or the TextAppearance_textColor 7565 * from the TextView_textAppearance attribute, if TextView_textColor 7566 * was not set directly. 7567 */ 7568 public static ColorStateList getTextColors(Context context, TypedArray attrs) { 7569 ColorStateList colors; 7570 colors = attrs.getColorStateList(com.android.internal.R.styleable. 7571 TextView_textColor); 7572 7573 if (colors == null) { 7574 int ap = attrs.getResourceId(com.android.internal.R.styleable. 7575 TextView_textAppearance, -1); 7576 if (ap != -1) { 7577 TypedArray appearance; 7578 appearance = context.obtainStyledAttributes(ap, 7579 com.android.internal.R.styleable.TextAppearance); 7580 colors = appearance.getColorStateList(com.android.internal.R.styleable. 7581 TextAppearance_textColor); 7582 appearance.recycle(); 7583 } 7584 } 7585 7586 return colors; 7587 } 7588 7589 /** 7590 * Returns the default color from the TextView_textColor attribute 7591 * from the AttributeSet, if set, or the default color from the 7592 * TextAppearance_textColor from the TextView_textAppearance attribute, 7593 * if TextView_textColor was not set directly. 7594 */ 7595 public static int getTextColor(Context context, 7596 TypedArray attrs, 7597 int def) { 7598 ColorStateList colors = getTextColors(context, attrs); 7599 7600 if (colors == null) { 7601 return def; 7602 } else { 7603 return colors.getDefaultColor(); 7604 } 7605 } 7606 7607 @Override 7608 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 7609 final int filteredMetaState = event.getMetaState() & ~KeyEvent.META_CTRL_MASK; 7610 if (KeyEvent.metaStateHasNoModifiers(filteredMetaState)) { 7611 switch (keyCode) { 7612 case KeyEvent.KEYCODE_A: 7613 if (canSelectText()) { 7614 return onTextContextMenuItem(ID_SELECT_ALL); 7615 } 7616 break; 7617 case KeyEvent.KEYCODE_X: 7618 if (canCut()) { 7619 return onTextContextMenuItem(ID_CUT); 7620 } 7621 break; 7622 case KeyEvent.KEYCODE_C: 7623 if (canCopy()) { 7624 return onTextContextMenuItem(ID_COPY); 7625 } 7626 break; 7627 case KeyEvent.KEYCODE_V: 7628 if (canPaste()) { 7629 return onTextContextMenuItem(ID_PASTE); 7630 } 7631 break; 7632 } 7633 } 7634 return super.onKeyShortcut(keyCode, event); 7635 } 7636 7637 /** 7638 * Unlike {@link #textCanBeSelected()}, this method is based on the <i>current</i> state of the 7639 * TextView. {@link #textCanBeSelected()} has to be true (this is one of the conditions to have 7640 * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient. 7641 */ 7642 private boolean canSelectText() { 7643 return hasSelectionController() && mText.length() != 0; 7644 } 7645 7646 /** 7647 * Test based on the <i>intrinsic</i> charateristics of the TextView. 7648 * The text must be spannable and the movement method must allow for arbitary selection. 7649 * 7650 * See also {@link #canSelectText()}. 7651 */ 7652 private boolean textCanBeSelected() { 7653 // prepareCursorController() relies on this method. 7654 // If you change this condition, make sure prepareCursorController is called anywhere 7655 // the value of this condition might be changed. 7656 return mText instanceof Spannable && mMovement != null && mMovement.canSelectArbitrarily(); 7657 } 7658 7659 private boolean canCut() { 7660 if (hasPasswordTransformationMethod()) { 7661 return false; 7662 } 7663 7664 if (mText.length() > 0 && hasSelection() && mText instanceof Editable && mInput != null) { 7665 return true; 7666 } 7667 7668 return false; 7669 } 7670 7671 private boolean canCopy() { 7672 if (hasPasswordTransformationMethod()) { 7673 return false; 7674 } 7675 7676 if (mText.length() > 0 && hasSelection()) { 7677 return true; 7678 } 7679 7680 return false; 7681 } 7682 7683 private boolean canPaste() { 7684 return (mText instanceof Editable && 7685 mInput != null && 7686 getSelectionStart() >= 0 && 7687 getSelectionEnd() >= 0 && 7688 ((ClipboardManager)getContext().getSystemService(Context.CLIPBOARD_SERVICE)). 7689 hasPrimaryClip()); 7690 } 7691 7692 private boolean isWordCharacter(int c, int type) { 7693 return (c == '\'' || c == '"' || 7694 type == Character.UPPERCASE_LETTER || 7695 type == Character.LOWERCASE_LETTER || 7696 type == Character.TITLECASE_LETTER || 7697 type == Character.MODIFIER_LETTER || 7698 type == Character.OTHER_LETTER || // Should handle asian characters 7699 type == Character.DECIMAL_DIGIT_NUMBER); 7700 } 7701 7702 /** 7703 * Returns the offsets delimiting the 'word' located at position offset. 7704 * 7705 * @param offset An offset in the text. 7706 * @return The offsets for the start and end of the word located at <code>offset</code>. 7707 * The two ints offsets are packed in a long using {@link #packRangeInLong(int, int)}. 7708 * Returns -1 if no valid word was found. 7709 */ 7710 private long getWordLimitsAt(int offset) { 7711 int klass = mInputType & InputType.TYPE_MASK_CLASS; 7712 int variation = mInputType & InputType.TYPE_MASK_VARIATION; 7713 7714 // Text selection is not permitted in password fields 7715 if (hasPasswordTransformationMethod()) { 7716 return -1; 7717 } 7718 7719 final int len = mText.length(); 7720 7721 // Specific text fields: always select the entire text 7722 if (klass == InputType.TYPE_CLASS_NUMBER || 7723 klass == InputType.TYPE_CLASS_PHONE || 7724 klass == InputType.TYPE_CLASS_DATETIME || 7725 variation == InputType.TYPE_TEXT_VARIATION_URI || 7726 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 7727 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 7728 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 7729 return len > 0 ? packRangeInLong(0, len) : -1; 7730 } 7731 7732 int end = Math.min(offset, len); 7733 if (end < 0) { 7734 return -1; 7735 } 7736 7737 final int MAX_LENGTH = 48; 7738 int start = end; 7739 7740 for (; start > 0; start--) { 7741 final char c = mTransformed.charAt(start - 1); 7742 final int type = Character.getType(c); 7743 if (start == end && type == Character.OTHER_PUNCTUATION) { 7744 // Cases where the text ends with a '.' and we select from the end of the line 7745 // (right after the dot), or when we select from the space character in "aaa, bbb". 7746 continue; 7747 } 7748 if (type == Character.SURROGATE) { // Two Character codepoint 7749 end = start - 1; // Recheck as a pair when scanning forward 7750 continue; 7751 } 7752 if (!isWordCharacter(c, type)) break; 7753 if ((end - start) > MAX_LENGTH) return -1; 7754 } 7755 7756 for (; end < len; end++) { 7757 final int c = Character.codePointAt(mTransformed, end); 7758 final int type = Character.getType(c); 7759 if (!isWordCharacter(c, type)) break; 7760 if ((end - start) > MAX_LENGTH) return -1; 7761 if (c > 0xFFFF) { // Two Character codepoint 7762 end++; 7763 } 7764 } 7765 7766 if (start == end) { 7767 return -1; 7768 } 7769 7770 // Two ints packed in a long 7771 return packRangeInLong(start, end); 7772 } 7773 7774 private static long packRangeInLong(int start, int end) { 7775 return (((long) start) << 32) | end; 7776 } 7777 7778 private static int extractRangeStartFromLong(long range) { 7779 return (int) (range >>> 32); 7780 } 7781 7782 private static int extractRangeEndFromLong(long range) { 7783 return (int) (range & 0x00000000FFFFFFFFL); 7784 } 7785 7786 private void selectAll() { 7787 Selection.setSelection((Spannable) mText, 0, mText.length()); 7788 } 7789 7790 private void selectCurrentWord() { 7791 if (!canSelectText()) { 7792 return; 7793 } 7794 7795 if (hasPasswordTransformationMethod()) { 7796 // Always select all on a password field. 7797 // Cut/copy menu entries are not available for passwords, but being able to select all 7798 // is however useful to delete or paste to replace the entire content. 7799 selectAll(); 7800 return; 7801 } 7802 7803 long lastTouchOffsets = getLastTouchOffsets(); 7804 final int minOffset = extractRangeStartFromLong(lastTouchOffsets); 7805 final int maxOffset = extractRangeEndFromLong(lastTouchOffsets); 7806 7807 int selectionStart, selectionEnd; 7808 7809 // If a URLSpan (web address, email, phone...) is found at that position, select it. 7810 URLSpan[] urlSpans = ((Spanned) mText).getSpans(minOffset, maxOffset, URLSpan.class); 7811 if (urlSpans.length == 1) { 7812 URLSpan url = urlSpans[0]; 7813 selectionStart = ((Spanned) mText).getSpanStart(url); 7814 selectionEnd = ((Spanned) mText).getSpanEnd(url); 7815 } else { 7816 long wordLimits = getWordLimitsAt(minOffset); 7817 if (wordLimits >= 0) { 7818 selectionStart = extractRangeStartFromLong(wordLimits); 7819 } else { 7820 selectionStart = Math.max(minOffset - 5, 0); 7821 } 7822 7823 wordLimits = getWordLimitsAt(maxOffset); 7824 if (wordLimits >= 0) { 7825 selectionEnd = extractRangeEndFromLong(wordLimits); 7826 } else { 7827 selectionEnd = Math.min(maxOffset + 5, mText.length()); 7828 } 7829 } 7830 7831 Selection.setSelection((Spannable) mText, selectionStart, selectionEnd); 7832 } 7833 7834 private long getLastTouchOffsets() { 7835 int minOffset, maxOffset; 7836 7837 if (mContextMenuTriggeredByKey) { 7838 minOffset = getSelectionStart(); 7839 maxOffset = getSelectionEnd(); 7840 } else { 7841 SelectionModifierCursorController selectionController = getSelectionController(); 7842 minOffset = selectionController.getMinTouchOffset(); 7843 maxOffset = selectionController.getMaxTouchOffset(); 7844 } 7845 7846 return packRangeInLong(minOffset, maxOffset); 7847 } 7848 7849 @Override 7850 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 7851 if (!isShown()) { 7852 return false; 7853 } 7854 7855 final boolean isPassword = hasPasswordTransformationMethod(); 7856 7857 if (!isPassword) { 7858 CharSequence text = getText(); 7859 if (TextUtils.isEmpty(text)) { 7860 text = getHint(); 7861 } 7862 if (!TextUtils.isEmpty(text)) { 7863 if (text.length() > AccessibilityEvent.MAX_TEXT_LENGTH) { 7864 text = text.subSequence(0, AccessibilityEvent.MAX_TEXT_LENGTH + 1); 7865 } 7866 event.getText().add(text); 7867 } 7868 } else { 7869 event.setPassword(isPassword); 7870 } 7871 return false; 7872 } 7873 7874 void sendAccessibilityEventTypeViewTextChanged(CharSequence beforeText, 7875 int fromIndex, int removedCount, int addedCount) { 7876 AccessibilityEvent event = 7877 AccessibilityEvent.obtain(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED); 7878 event.setFromIndex(fromIndex); 7879 event.setRemovedCount(removedCount); 7880 event.setAddedCount(addedCount); 7881 event.setBeforeText(beforeText); 7882 sendAccessibilityEventUnchecked(event); 7883 } 7884 7885 @Override 7886 protected void onCreateContextMenu(ContextMenu menu) { 7887 super.onCreateContextMenu(menu); 7888 boolean added = false; 7889 mContextMenuTriggeredByKey = mDPadCenterIsDown || mEnterKeyIsDown; 7890 // Problem with context menu on long press: the menu appears while the key in down and when 7891 // the key is released, the view does not receive the key_up event. 7892 // We need two layers of flags: mDPadCenterIsDown and mEnterKeyIsDown are set in key down/up 7893 // events. We cannot simply clear these flags in onTextContextMenuItem since 7894 // it may not be called (if the user/ discards the context menu with the back key). 7895 // We clear these flags here and mContextMenuTriggeredByKey saves that state so that it is 7896 // available in onTextContextMenuItem. 7897 mDPadCenterIsDown = mEnterKeyIsDown = false; 7898 7899 MenuHandler handler = new MenuHandler(); 7900 7901 if (mText instanceof Spanned && hasSelectionController()) { 7902 long lastTouchOffset = getLastTouchOffsets(); 7903 final int selStart = extractRangeStartFromLong(lastTouchOffset); 7904 final int selEnd = extractRangeEndFromLong(lastTouchOffset); 7905 7906 URLSpan[] urls = ((Spanned) mText).getSpans(selStart, selEnd, URLSpan.class); 7907 if (urls.length > 0) { 7908 menu.add(0, ID_COPY_URL, 0, com.android.internal.R.string.copyUrl). 7909 setOnMenuItemClickListener(handler); 7910 7911 added = true; 7912 } 7913 } 7914 7915 // The context menu is not empty, which will prevent the selection mode from starting. 7916 // Add a entry to start it in the context menu. 7917 // TODO Does not handle the case where a subclass does not call super.thisMethod or 7918 // populates the menu AFTER this call. 7919 if (menu.size() > 0) { 7920 menu.add(0, ID_SELECTION_MODE, 0, com.android.internal.R.string.selectTextMode). 7921 setOnMenuItemClickListener(handler); 7922 added = true; 7923 } 7924 7925 if (added) { 7926 menu.setHeaderTitle(com.android.internal.R.string.editTextMenuTitle); 7927 } 7928 } 7929 7930 /** 7931 * Returns whether this text view is a current input method target. The 7932 * default implementation just checks with {@link InputMethodManager}. 7933 */ 7934 public boolean isInputMethodTarget() { 7935 InputMethodManager imm = InputMethodManager.peekInstance(); 7936 return imm != null && imm.isActive(this); 7937 } 7938 7939 // Selection context mode 7940 private static final int ID_SELECT_ALL = android.R.id.selectAll; 7941 private static final int ID_CUT = android.R.id.cut; 7942 private static final int ID_COPY = android.R.id.copy; 7943 private static final int ID_PASTE = android.R.id.paste; 7944 // Context menu entries 7945 private static final int ID_COPY_URL = android.R.id.copyUrl; 7946 private static final int ID_SELECTION_MODE = android.R.id.selectTextMode; 7947 7948 private class MenuHandler implements MenuItem.OnMenuItemClickListener { 7949 public boolean onMenuItemClick(MenuItem item) { 7950 return onTextContextMenuItem(item.getItemId()); 7951 } 7952 } 7953 7954 /** 7955 * Called when a context menu option for the text view is selected. Currently 7956 * this will be {@link android.R.id#copyUrl}, {@link android.R.id#selectTextMode}, 7957 * {@link android.R.id#selectAll}, {@link android.R.id#paste}, {@link android.R.id#cut} 7958 * or {@link android.R.id#copy}. 7959 */ 7960 public boolean onTextContextMenuItem(int id) { 7961 int min = 0; 7962 int max = mText.length(); 7963 7964 if (isFocused()) { 7965 final int selStart = getSelectionStart(); 7966 final int selEnd = getSelectionEnd(); 7967 7968 min = Math.max(0, Math.min(selStart, selEnd)); 7969 max = Math.max(0, Math.max(selStart, selEnd)); 7970 } 7971 7972 switch (id) { 7973 case ID_COPY_URL: 7974 URLSpan[] urls = ((Spanned) mText).getSpans(min, max, URLSpan.class); 7975 if (urls.length >= 1) { 7976 ClipData clip = null; 7977 for (int i=0; i<urls.length; i++) { 7978 Uri uri = Uri.parse(urls[0].getURL()); 7979 if (clip == null) { 7980 clip = ClipData.newRawUri(null, uri); 7981 } else { 7982 clip.addItem(new ClipData.Item(uri)); 7983 } 7984 } 7985 if (clip != null) { 7986 setPrimaryClip(clip); 7987 } 7988 } 7989 stopSelectionActionMode(); 7990 return true; 7991 7992 case ID_SELECTION_MODE: 7993 if (mSelectionActionMode != null) { 7994 // Selection mode is already started, simply change selected part. 7995 updateSelectedRegion(); 7996 } else { 7997 startSelectionActionMode(); 7998 } 7999 return true; 8000 8001 case ID_SELECT_ALL: 8002 selectAll(); 8003 // Update controller positions after selection change. 8004 if (hasSelectionController()) { 8005 getSelectionController().show(); 8006 } 8007 return true; 8008 8009 case ID_PASTE: 8010 paste(min, max); 8011 return true; 8012 8013 case ID_CUT: 8014 setPrimaryClip(ClipData.newPlainText(null, mTransformed.subSequence(min, max))); 8015 ((Editable) mText).delete(min, max); 8016 stopSelectionActionMode(); 8017 return true; 8018 8019 case ID_COPY: 8020 setPrimaryClip(ClipData.newPlainText(null, mTransformed.subSequence(min, max))); 8021 stopSelectionActionMode(); 8022 return true; 8023 } 8024 return false; 8025 } 8026 8027 /** 8028 * Prepare text so that there are not zero or two spaces at beginning and end of region defined 8029 * by [min, max] when replacing this region by paste. 8030 * Note that if there were two spaces (or more) at that position before, they are kept. We just 8031 * make sure we do not add an extra one from the paste content. 8032 */ 8033 private long prepareSpacesAroundPaste(int min, int max, CharSequence paste) { 8034 if (paste.length() > 0) { 8035 if (min > 0) { 8036 final char charBefore = mTransformed.charAt(min - 1); 8037 final char charAfter = paste.charAt(0); 8038 8039 if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) { 8040 // Two spaces at beginning of paste: remove one 8041 final int originalLength = mText.length(); 8042 ((Editable) mText).delete(min - 1, min); 8043 // Due to filters, there is no guarantee that exactly one character was 8044 // removed: count instead. 8045 final int delta = mText.length() - originalLength; 8046 min += delta; 8047 max += delta; 8048 } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' && 8049 !Character.isSpaceChar(charAfter) && charAfter != '\n') { 8050 // No space at beginning of paste: add one 8051 final int originalLength = mText.length(); 8052 ((Editable) mText).replace(min, min, " "); 8053 // Taking possible filters into account as above. 8054 final int delta = mText.length() - originalLength; 8055 min += delta; 8056 max += delta; 8057 } 8058 } 8059 8060 if (max < mText.length()) { 8061 final char charBefore = paste.charAt(paste.length() - 1); 8062 final char charAfter = mTransformed.charAt(max); 8063 8064 if (Character.isSpaceChar(charBefore) && Character.isSpaceChar(charAfter)) { 8065 // Two spaces at end of paste: remove one 8066 ((Editable) mText).delete(max, max + 1); 8067 } else if (!Character.isSpaceChar(charBefore) && charBefore != '\n' && 8068 !Character.isSpaceChar(charAfter) && charAfter != '\n') { 8069 // No space at end of paste: add one 8070 ((Editable) mText).replace(max, max, " "); 8071 } 8072 } 8073 } 8074 8075 return packRangeInLong(min, max); 8076 } 8077 8078 private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { 8079 TextView shadowView = (TextView) inflate(mContext, 8080 com.android.internal.R.layout.text_drag_thumbnail, null); 8081 8082 if (shadowView == null) { 8083 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 8084 } 8085 8086 if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { 8087 text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); 8088 } 8089 shadowView.setText(text); 8090 shadowView.setTextColor(getTextColors()); 8091 8092 shadowView.setTextAppearance(mContext, R.styleable.Theme_textAppearanceLarge); 8093 shadowView.setGravity(Gravity.CENTER); 8094 8095 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 8096 ViewGroup.LayoutParams.WRAP_CONTENT)); 8097 8098 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 8099 shadowView.measure(size, size); 8100 8101 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 8102 shadowView.invalidate(); 8103 return new DragShadowBuilder(shadowView); 8104 } 8105 8106 private static class DragLocalState { 8107 public TextView sourceTextView; 8108 public int start, end; 8109 8110 public DragLocalState(TextView sourceTextView, int start, int end) { 8111 this.sourceTextView = sourceTextView; 8112 this.start = start; 8113 this.end = end; 8114 } 8115 } 8116 8117 @Override 8118 public boolean performLongClick() { 8119 if (super.performLongClick()) { 8120 mDiscardNextActionUp = true; 8121 return true; 8122 } 8123 8124 // Long press in empty space moves cursor and shows the Paste affordance if available. 8125 if (!isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 8126 mInsertionControllerEnabled) { 8127 final int offset = getOffset(mLastDownPositionX, mLastDownPositionY); 8128 stopSelectionActionMode(); 8129 Selection.setSelection((Spannable)mText, offset); 8130 getInsertionController().show(0); 8131 mDiscardNextActionUp = true; 8132 return true; 8133 } 8134 8135 if (mSelectionActionMode != null) { 8136 if (touchPositionIsInSelection()) { 8137 // Start a drag 8138 final int start = getSelectionStart(); 8139 final int end = getSelectionEnd(); 8140 CharSequence selectedText = mTransformed.subSequence(start, end); 8141 ClipData data = ClipData.newPlainText(null, selectedText); 8142 DragLocalState localState = new DragLocalState(this, start, end); 8143 startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0); 8144 stopSelectionActionMode(); 8145 } else { 8146 updateSelectedRegion(); 8147 } 8148 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 8149 mDiscardNextActionUp = true; 8150 return true; 8151 } 8152 8153 // Start a new selection 8154 if (startSelectionActionMode()) { 8155 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 8156 mDiscardNextActionUp = true; 8157 return true; 8158 } 8159 8160 return false; 8161 } 8162 8163 /** 8164 * When selection mode is already started, this method simply updates the selected part of text 8165 * to the text under the finger. 8166 */ 8167 private void updateSelectedRegion() { 8168 // Start a new selection at current position, keep selectionAction mode on 8169 selectCurrentWord(); 8170 // Updates handles' positions 8171 getSelectionController().show(); 8172 } 8173 8174 private boolean touchPositionIsInSelection() { 8175 int selectionStart = getSelectionStart(); 8176 int selectionEnd = getSelectionEnd(); 8177 8178 if (selectionStart == selectionEnd) { 8179 return false; 8180 } 8181 8182 if (selectionStart > selectionEnd) { 8183 int tmp = selectionStart; 8184 selectionStart = selectionEnd; 8185 selectionEnd = tmp; 8186 Selection.setSelection((Spannable) mText, selectionStart, selectionEnd); 8187 } 8188 8189 SelectionModifierCursorController selectionController = getSelectionController(); 8190 int minOffset = selectionController.getMinTouchOffset(); 8191 int maxOffset = selectionController.getMaxTouchOffset(); 8192 8193 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 8194 } 8195 8196 /** 8197 * If provided, this ActionMode.Callback will be used to create the ActionMode when text 8198 * selection is initiated in this View. 8199 * 8200 * The standard implementation populates the menu with a subset of Select All, Cut, Copy and 8201 * Paste actions, depending on what this View supports. 8202 * 8203 * A custom implementation can add new entries in the default menu in its 8204 * {@link ActionMode.Callback#onPrepareActionMode(ActionMode, Menu)} method. The default actions 8205 * can also be removed from the menu using {@link Menu#removeItem(int)} and passing 8206 * {@link android.R.id#selectAll}, {@link android.R.id#cut}, {@link android.R.id#copy} or 8207 * {@link android.R.id#paste} ids as parameters. 8208 * 8209 * Returning false from {@link ActionMode.Callback#onCreateActionMode(ActionMode, Menu)} will 8210 * prevent the action mode from being started. 8211 * 8212 * Action click events should be handled by the custom implementation of 8213 * {@link ActionMode.Callback#onActionItemClicked(ActionMode, MenuItem)}. 8214 * 8215 * Note that text selection mode is not started when a TextView receives focus and the 8216 * {@link android.R.attr#selectAllOnFocus} flag has been set. The content is highlighted in 8217 * that case, to allow for quick replacement. 8218 */ 8219 public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) { 8220 mCustomSelectionActionModeCallback = actionModeCallback; 8221 } 8222 8223 /** 8224 * Retrieves the value set in {@link #setCustomSelectionActionModeCallback}. Default is null. 8225 * 8226 * @return The current custom selection callback. 8227 */ 8228 public ActionMode.Callback getCustomSelectionActionModeCallback() { 8229 return mCustomSelectionActionModeCallback; 8230 } 8231 8232 /** 8233 * 8234 * @return true if the selection mode was actually started. 8235 */ 8236 private boolean startSelectionActionMode() { 8237 if (mSelectionActionMode != null) { 8238 // Selection action mode is already started 8239 return false; 8240 } 8241 8242 if (!canSelectText() || !requestFocus()) { 8243 Log.w(LOG_TAG, "TextView does not support text selection. Action mode cancelled."); 8244 return false; 8245 } 8246 8247 if (!hasSelection()) { 8248 // If selection mode is started after a device rotation, there is already a selection. 8249 selectCurrentWord(); 8250 } 8251 8252 ActionMode.Callback actionModeCallback = new SelectionActionModeCallback(); 8253 mSelectionActionMode = startActionMode(actionModeCallback); 8254 final boolean selectionStarted = mSelectionActionMode != null; 8255 8256 if (selectionStarted && !mTextIsSelectable) { 8257 // Show the IME to be able to replace text, except when selecting non editable text. 8258 final InputMethodManager imm = InputMethodManager.peekInstance(); 8259 if (imm != null) imm.showSoftInput(this, 0, null); 8260 } 8261 8262 return selectionStarted; 8263 } 8264 8265 /** 8266 * Same as {@link #stopSelectionActionMode()}, except that there is no cursor controller 8267 * fade out animation. Needed since the drawable and their alpha values are shared by all 8268 * TextViews. Switching from one TextView to another would fade the cursor controllers in the 8269 * new one otherwise. 8270 */ 8271 private void terminateSelectionActionMode() { 8272 stopSelectionActionMode(); 8273 8274 // No need to create the controller, nothing to cancel in that case. 8275 if (mSelectionModifierCursorController != null) { 8276 mSelectionModifierCursorController.cancelFadeOutAnimation(); 8277 } 8278 } 8279 8280 private void stopSelectionActionMode() { 8281 if (mSelectionActionMode != null) { 8282 // This will hide the mSelectionModifierCursorController 8283 mSelectionActionMode.finish(); 8284 } 8285 } 8286 8287 /** 8288 * Paste clipboard content between min and max positions. 8289 */ 8290 private void paste(int min, int max) { 8291 ClipboardManager clipboard = 8292 (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE); 8293 ClipData clip = clipboard.getPrimaryClip(); 8294 if (clip != null) { 8295 boolean didfirst = false; 8296 for (int i=0; i<clip.getItemCount(); i++) { 8297 CharSequence paste = clip.getItemAt(i).coerceToText(getContext()); 8298 if (paste != null) { 8299 if (!didfirst) { 8300 long minMax = prepareSpacesAroundPaste(min, max, paste); 8301 min = extractRangeStartFromLong(minMax); 8302 max = extractRangeEndFromLong(minMax); 8303 Selection.setSelection((Spannable) mText, max); 8304 ((Editable) mText).replace(min, max, paste); 8305 } else { 8306 ((Editable) mText).insert(getSelectionEnd(), "\n"); 8307 ((Editable) mText).insert(getSelectionEnd(), paste); 8308 } 8309 } 8310 } 8311 stopSelectionActionMode(); 8312 sLastCutOrCopyTime = 0; 8313 } 8314 } 8315 8316 private void setPrimaryClip(ClipData clip) { 8317 ClipboardManager clipboard = (ClipboardManager) getContext(). 8318 getSystemService(Context.CLIPBOARD_SERVICE); 8319 clipboard.setPrimaryClip(clip); 8320 sLastCutOrCopyTime = SystemClock.uptimeMillis(); 8321 } 8322 8323 /** 8324 * An ActionMode Callback class that is used to provide actions while in text selection mode. 8325 * 8326 * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending 8327 * on which of these this TextView supports. 8328 */ 8329 private class SelectionActionModeCallback implements ActionMode.Callback { 8330 8331 @Override 8332 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 8333 TypedArray styledAttributes = mContext.obtainStyledAttributes(R.styleable.Theme); 8334 8335 mode.setTitle(mContext.getString(com.android.internal.R.string.textSelectionCABTitle)); 8336 mode.setSubtitle(null); 8337 8338 menu.add(0, ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll). 8339 setAlphabeticShortcut('a'). 8340 setShowAsAction( 8341 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 8342 8343 if (canCut()) { 8344 menu.add(0, ID_CUT, 0, com.android.internal.R.string.cut). 8345 setIcon(styledAttributes.getResourceId( 8346 R.styleable.Theme_actionModeCutDrawable, 0)). 8347 setAlphabeticShortcut('x'). 8348 setShowAsAction( 8349 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 8350 } 8351 8352 if (canCopy()) { 8353 menu.add(0, ID_COPY, 0, com.android.internal.R.string.copy). 8354 setIcon(styledAttributes.getResourceId( 8355 R.styleable.Theme_actionModeCopyDrawable, 0)). 8356 setAlphabeticShortcut('c'). 8357 setShowAsAction( 8358 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 8359 } 8360 8361 if (canPaste()) { 8362 menu.add(0, ID_PASTE, 0, com.android.internal.R.string.paste). 8363 setIcon(styledAttributes.getResourceId( 8364 R.styleable.Theme_actionModePasteDrawable, 0)). 8365 setAlphabeticShortcut('v'). 8366 setShowAsAction( 8367 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 8368 } 8369 8370 styledAttributes.recycle(); 8371 8372 if (mCustomSelectionActionModeCallback != null) { 8373 if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) { 8374 // The custom mode can choose to cancel the action mode 8375 return false; 8376 } 8377 } 8378 8379 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 8380 getSelectionController().show(); 8381 return true; 8382 } else { 8383 return false; 8384 } 8385 } 8386 8387 @Override 8388 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 8389 if (mCustomSelectionActionModeCallback != null) { 8390 return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu); 8391 } 8392 return true; 8393 } 8394 8395 @Override 8396 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 8397 if (mCustomSelectionActionModeCallback != null && 8398 mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) { 8399 return true; 8400 } 8401 return onTextContextMenuItem(item.getItemId()); 8402 } 8403 8404 @Override 8405 public void onDestroyActionMode(ActionMode mode) { 8406 if (mCustomSelectionActionModeCallback != null) { 8407 mCustomSelectionActionModeCallback.onDestroyActionMode(mode); 8408 } 8409 Selection.setSelection((Spannable) mText, getSelectionEnd()); 8410 8411 if (mSelectionModifierCursorController != null) { 8412 mSelectionModifierCursorController.hide(); 8413 } 8414 8415 mSelectionActionMode = null; 8416 } 8417 } 8418 8419 /** 8420 * A CursorController instance can be used to control a cursor in the text. 8421 * It is not used outside of {@link TextView}. 8422 * @hide 8423 */ 8424 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 8425 /** 8426 * Makes the cursor controller visible on screen. Will be drawn by {@link #draw(Canvas)}. 8427 * See also {@link #hide()}. 8428 */ 8429 public void show(); 8430 8431 /** 8432 * Hide the cursor controller from screen. 8433 * See also {@link #show()}. 8434 */ 8435 public void hide(); 8436 8437 /** 8438 * @return true if the CursorController is currently visible 8439 */ 8440 public boolean isShowing(); 8441 8442 /** 8443 * Update the controller's position. 8444 */ 8445 public void updatePosition(HandleView handle, int x, int y); 8446 8447 public void updateOffset(HandleView handle, int offset); 8448 8449 public void updatePosition(); 8450 8451 public int getCurrentOffset(HandleView handle); 8452 8453 /** 8454 * This method is called by {@link #onTouchEvent(MotionEvent)} and gives the controller 8455 * a chance to become active and/or visible. 8456 * @param event The touch event 8457 */ 8458 public boolean onTouchEvent(MotionEvent event); 8459 8460 /** 8461 * Called when the view is detached from window. Perform house keeping task, such as 8462 * stopping Runnable thread that would otherwise keep a reference on the context, thus 8463 * preventing the activity to be recycled. 8464 */ 8465 public void onDetached(); 8466 } 8467 8468 private class PastePopupMenu implements OnClickListener { 8469 private final PopupWindow mContainer; 8470 private int mPositionX; 8471 private int mPositionY; 8472 private final View[] mPasteViews = new View[4]; 8473 private final int[] mPasteViewLayouts = new int[] { 8474 mTextEditPasteWindowLayout, mTextEditNoPasteWindowLayout, 8475 mTextEditSidePasteWindowLayout, mTextEditSideNoPasteWindowLayout }; 8476 8477 public PastePopupMenu() { 8478 mContainer = new PopupWindow(TextView.this.mContext, null, 8479 com.android.internal.R.attr.textSelectHandleWindowStyle); 8480 mContainer.setSplitTouchEnabled(true); 8481 mContainer.setClippingEnabled(false); 8482 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 8483 8484 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 8485 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 8486 } 8487 8488 private int viewIndex(boolean onTop) { 8489 return (onTop ? 0 : 1<<1) + (canPaste() ? 0 : 1<<0); 8490 } 8491 8492 private void updateContent(boolean onTop) { 8493 final int viewIndex = viewIndex(onTop); 8494 View view = mPasteViews[viewIndex]; 8495 8496 if (view == null) { 8497 final int layout = mPasteViewLayouts[viewIndex]; 8498 LayoutInflater inflater = (LayoutInflater)TextView.this.mContext. 8499 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 8500 if (inflater != null) { 8501 view = inflater.inflate(layout, null); 8502 } 8503 8504 if (view == null) { 8505 throw new IllegalArgumentException("Unable to inflate TextEdit paste window"); 8506 } 8507 8508 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 8509 view.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 8510 ViewGroup.LayoutParams.WRAP_CONTENT)); 8511 view.measure(size, size); 8512 8513 view.setOnClickListener(this); 8514 8515 mPasteViews[viewIndex] = view; 8516 } 8517 8518 mContainer.setContentView(view); 8519 } 8520 8521 public void show() { 8522 updateContent(true); 8523 positionAtCursor(); 8524 } 8525 8526 public void hide() { 8527 mContainer.dismiss(); 8528 } 8529 8530 public boolean isShowing() { 8531 return mContainer.isShowing(); 8532 } 8533 8534 @Override 8535 public void onClick(View v) { 8536 if (canPaste()) { 8537 paste(getSelectionStart(), getSelectionEnd()); 8538 } 8539 hide(); 8540 } 8541 8542 void positionAtCursor() { 8543 View contentView = mContainer.getContentView(); 8544 int width = contentView.getMeasuredWidth(); 8545 int height = contentView.getMeasuredHeight(); 8546 final int offset = TextView.this.getSelectionStart(); 8547 final int line = mLayout.getLineForOffset(offset); 8548 final int lineTop = mLayout.getLineTop(line); 8549 float primaryHorizontal = mLayout.getPrimaryHorizontal(offset); 8550 8551 final Rect bounds = sCursorControllerTempRect; 8552 bounds.left = (int) (primaryHorizontal - width / 2.0f); 8553 bounds.top = lineTop - height; 8554 8555 bounds.right = bounds.left + width; 8556 bounds.bottom = bounds.top + height; 8557 8558 convertFromViewportToContentCoordinates(bounds); 8559 8560 mPositionX = bounds.left; 8561 mPositionY = bounds.top; 8562 8563 8564 final int[] coords = mTempCoords; 8565 TextView.this.getLocationInWindow(coords); 8566 coords[0] += mPositionX; 8567 coords[1] += mPositionY; 8568 8569 final int screenWidth = mContext.getResources().getDisplayMetrics().widthPixels; 8570 if (coords[1] < 0) { 8571 updateContent(false); 8572 // Update dimensions from new view 8573 contentView = mContainer.getContentView(); 8574 width = contentView.getMeasuredWidth(); 8575 height = contentView.getMeasuredHeight(); 8576 8577 // Vertical clipping, move under edited line and to the side of insertion cursor 8578 // TODO bottom clipping in case there is no system bar 8579 coords[1] += height; 8580 final int lineBottom = mLayout.getLineBottom(line); 8581 final int lineHeight = lineBottom - lineTop; 8582 coords[1] += lineHeight; 8583 8584 // Move to right hand side of insertion cursor by default. TODO RTL text. 8585 final Drawable handle = mContext.getResources().getDrawable(mTextSelectHandleRes); 8586 final int handleHalfWidth = handle.getIntrinsicWidth() / 2; 8587 8588 if (primaryHorizontal + handleHalfWidth + width < screenWidth) { 8589 coords[0] += handleHalfWidth + width / 2; 8590 } else { 8591 coords[0] -= handleHalfWidth + width / 2; 8592 } 8593 } else { 8594 // Horizontal clipping 8595 coords[0] = Math.max(0, coords[0]); 8596 coords[0] = Math.min(screenWidth - width, coords[0]); 8597 } 8598 8599 mContainer.showAtLocation(TextView.this, Gravity.NO_GRAVITY, coords[0], coords[1]); 8600 } 8601 } 8602 8603 private class HandleView extends View { 8604 private Drawable mDrawable; 8605 private final PopupWindow mContainer; 8606 private int mPositionX; 8607 private int mPositionY; 8608 private final CursorController mController; 8609 private boolean mIsDragging; 8610 private float mTouchToWindowOffsetX; 8611 private float mTouchToWindowOffsetY; 8612 private float mHotspotX; 8613 private float mHotspotY; 8614 private int mHeight; 8615 private float mTouchOffsetY; 8616 private int mLastParentX; 8617 private int mLastParentY; 8618 private float mDownPositionX, mDownPositionY; 8619 private int mContainerPositionX, mContainerPositionY; 8620 private long mTouchTimer; 8621 private boolean mIsInsertionHandle = false; 8622 private PastePopupMenu mPastePopupWindow; 8623 8624 // Touch-up filter: number of previous positions remembered 8625 private static final int HISTORY_SIZE = 5; 8626 private static final int TOUCH_UP_FILTER_DELAY = 150; 8627 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 8628 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 8629 private int mPreviousOffsetIndex = 0; 8630 private int mNumberPreviousOffsets = 0; 8631 8632 public void startTouchUpFilter(int offset) { 8633 mNumberPreviousOffsets = 0; 8634 addPositionToTouchUpFilter(offset); 8635 } 8636 8637 public void addPositionToTouchUpFilter(int offset) { 8638 if (mNumberPreviousOffsets > 0 && 8639 mPreviousOffsets[mPreviousOffsetIndex] == offset) { 8640 // Make sure only actual changes of position are recorded. 8641 return; 8642 } 8643 8644 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 8645 mPreviousOffsets[mPreviousOffsetIndex] = offset; 8646 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 8647 mNumberPreviousOffsets++; 8648 } 8649 8650 public void filterOnTouchUp() { 8651 final long now = SystemClock.uptimeMillis(); 8652 int i = 0; 8653 int index = 0; 8654 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 8655 while (i < iMax) { 8656 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 8657 if ((now - mPreviousOffsetsTimes[index]) >= TOUCH_UP_FILTER_DELAY) break; 8658 i++; 8659 } 8660 8661 mController.updateOffset(this, mPreviousOffsets[index]); 8662 } 8663 8664 public static final int LEFT = 0; 8665 public static final int CENTER = 1; 8666 public static final int RIGHT = 2; 8667 8668 public HandleView(CursorController controller, int pos) { 8669 super(TextView.this.mContext); 8670 mController = controller; 8671 mContainer = new PopupWindow(TextView.this.mContext, null, 8672 com.android.internal.R.attr.textSelectHandleWindowStyle); 8673 mContainer.setSplitTouchEnabled(true); 8674 mContainer.setClippingEnabled(false); 8675 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 8676 8677 setOrientation(pos); 8678 } 8679 8680 public void setOrientation(int pos) { 8681 int handleWidth; 8682 switch (pos) { 8683 case LEFT: { 8684 if (mSelectHandleLeft == null) { 8685 mSelectHandleLeft = mContext.getResources().getDrawable( 8686 mTextSelectHandleLeftRes); 8687 } 8688 mDrawable = mSelectHandleLeft; 8689 handleWidth = mDrawable.getIntrinsicWidth(); 8690 mHotspotX = (handleWidth * 3) / 4; 8691 break; 8692 } 8693 8694 case RIGHT: { 8695 if (mSelectHandleRight == null) { 8696 mSelectHandleRight = mContext.getResources().getDrawable( 8697 mTextSelectHandleRightRes); 8698 } 8699 mDrawable = mSelectHandleRight; 8700 handleWidth = mDrawable.getIntrinsicWidth(); 8701 mHotspotX = handleWidth / 4; 8702 break; 8703 } 8704 8705 case CENTER: 8706 default: { 8707 if (mSelectHandleCenter == null) { 8708 mSelectHandleCenter = mContext.getResources().getDrawable( 8709 mTextSelectHandleRes); 8710 } 8711 mDrawable = mSelectHandleCenter; 8712 handleWidth = mDrawable.getIntrinsicWidth(); 8713 mHotspotX = handleWidth / 2; 8714 mIsInsertionHandle = true; 8715 break; 8716 } 8717 } 8718 8719 final int handleHeight = mDrawable.getIntrinsicHeight(); 8720 8721 mTouchOffsetY = -handleHeight * 0.3f; 8722 mHotspotY = 0; 8723 mHeight = handleHeight; 8724 invalidate(); 8725 } 8726 8727 @Override 8728 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 8729 setMeasuredDimension(mDrawable.getIntrinsicWidth(), 8730 mDrawable.getIntrinsicHeight()); 8731 } 8732 8733 public void show() { 8734 if (!isPositionVisible()) { 8735 hide(); 8736 return; 8737 } 8738 mContainer.setContentView(this); 8739 final int[] coords = mTempCoords; 8740 TextView.this.getLocationInWindow(coords); 8741 mContainerPositionX = coords[0] + mPositionX; 8742 mContainerPositionY = coords[1] + mPositionY; 8743 mContainer.showAtLocation(TextView.this, 0, mContainerPositionX, mContainerPositionY); 8744 8745 // Hide paste view when handle is moved on screen. 8746 if (mPastePopupWindow != null) { 8747 mPastePopupWindow.hide(); 8748 } 8749 } 8750 8751 public void hide() { 8752 mIsDragging = false; 8753 mContainer.dismiss(); 8754 if (mPastePopupWindow != null) { 8755 mPastePopupWindow.hide(); 8756 } 8757 } 8758 8759 public boolean isShowing() { 8760 return mContainer.isShowing(); 8761 } 8762 8763 private boolean isPositionVisible() { 8764 // Always show a dragging handle. 8765 if (mIsDragging) { 8766 return true; 8767 } 8768 8769 if (isInBatchEditMode()) { 8770 return false; 8771 } 8772 8773 final int extendedPaddingTop = getExtendedPaddingTop(); 8774 final int extendedPaddingBottom = getExtendedPaddingBottom(); 8775 final int compoundPaddingLeft = getCompoundPaddingLeft(); 8776 final int compoundPaddingRight = getCompoundPaddingRight(); 8777 8778 final TextView hostView = TextView.this; 8779 final int left = 0; 8780 final int right = hostView.getWidth(); 8781 final int top = 0; 8782 final int bottom = hostView.getHeight(); 8783 8784 if (mTempRect == null) { 8785 mTempRect = new Rect(); 8786 } 8787 final Rect clip = mTempRect; 8788 clip.left = left + compoundPaddingLeft; 8789 clip.top = top + extendedPaddingTop; 8790 clip.right = right - compoundPaddingRight; 8791 clip.bottom = bottom - extendedPaddingBottom; 8792 8793 final ViewParent parent = hostView.getParent(); 8794 if (parent == null || !parent.getChildVisibleRect(hostView, clip, null)) { 8795 return false; 8796 } 8797 8798 final int[] coords = mTempCoords; 8799 hostView.getLocationInWindow(coords); 8800 final int posX = coords[0] + mPositionX + (int) mHotspotX; 8801 final int posY = coords[1] + mPositionY + (int) mHotspotY; 8802 8803 return posX >= clip.left && posX <= clip.right && 8804 posY >= clip.top && posY <= clip.bottom; 8805 } 8806 8807 private void moveTo(int x, int y) { 8808 mPositionX = x - TextView.this.mScrollX; 8809 mPositionY = y - TextView.this.mScrollY; 8810 if (isPositionVisible()) { 8811 int[] coords = null; 8812 if (mContainer.isShowing()) { 8813 coords = mTempCoords; 8814 TextView.this.getLocationInWindow(coords); 8815 final int containerPositionX = coords[0] + mPositionX; 8816 final int containerPositionY = coords[1] + mPositionY; 8817 8818 if (containerPositionX != mContainerPositionX || 8819 containerPositionY != mContainerPositionY) { 8820 mContainerPositionX = containerPositionX; 8821 mContainerPositionY = containerPositionY; 8822 8823 mContainer.update(mContainerPositionX, mContainerPositionY, 8824 mRight - mLeft, mBottom - mTop); 8825 8826 // Hide paste popup window as soon as a scroll occurs. 8827 if (mPastePopupWindow != null) { 8828 mPastePopupWindow.hide(); 8829 } 8830 } 8831 } else { 8832 show(); 8833 } 8834 8835 if (mIsDragging) { 8836 if (coords == null) { 8837 coords = mTempCoords; 8838 TextView.this.getLocationInWindow(coords); 8839 } 8840 if (coords[0] != mLastParentX || coords[1] != mLastParentY) { 8841 mTouchToWindowOffsetX += coords[0] - mLastParentX; 8842 mTouchToWindowOffsetY += coords[1] - mLastParentY; 8843 mLastParentX = coords[0]; 8844 mLastParentY = coords[1]; 8845 } 8846 // Hide paste popup window as soon as the handle is dragged. 8847 if (mPastePopupWindow != null) { 8848 mPastePopupWindow.hide(); 8849 } 8850 } 8851 } else { 8852 hide(); 8853 } 8854 } 8855 8856 @Override 8857 protected void onDraw(Canvas c) { 8858 mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop); 8859 mDrawable.draw(c); 8860 } 8861 8862 @Override 8863 public boolean onTouchEvent(MotionEvent ev) { 8864 switch (ev.getActionMasked()) { 8865 case MotionEvent.ACTION_DOWN: { 8866 startTouchUpFilter(mController.getCurrentOffset(this)); 8867 mDownPositionX = ev.getRawX(); 8868 mDownPositionY = ev.getRawY(); 8869 mTouchToWindowOffsetX = mDownPositionX - mPositionX; 8870 mTouchToWindowOffsetY = mDownPositionY - mPositionY; 8871 final int[] coords = mTempCoords; 8872 TextView.this.getLocationInWindow(coords); 8873 mLastParentX = coords[0]; 8874 mLastParentY = coords[1]; 8875 mIsDragging = true; 8876 break; 8877 } 8878 8879 case MotionEvent.ACTION_MOVE: { 8880 final float rawX = ev.getRawX(); 8881 final float rawY = ev.getRawY(); 8882 final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX; 8883 final float newPosY = rawY - mTouchToWindowOffsetY + mHotspotY + mTouchOffsetY; 8884 8885 mController.updatePosition(this, Math.round(newPosX), Math.round(newPosY)); 8886 break; 8887 } 8888 8889 case MotionEvent.ACTION_UP: 8890 if (mIsInsertionHandle) { 8891 long delay = SystemClock.uptimeMillis() - mTouchTimer; 8892 if (delay < ViewConfiguration.getTapTimeout()) { 8893 if (mPastePopupWindow != null && mPastePopupWindow.isShowing()) { 8894 // Tapping on the handle dismisses the displayed paste view, 8895 mPastePopupWindow.hide(); 8896 } else { 8897 ((InsertionPointCursorController) mController).show(0); 8898 } 8899 } 8900 } 8901 filterOnTouchUp(); 8902 mIsDragging = false; 8903 break; 8904 8905 case MotionEvent.ACTION_CANCEL: 8906 mIsDragging = false; 8907 break; 8908 } 8909 return true; 8910 } 8911 8912 public boolean isDragging() { 8913 return mIsDragging; 8914 } 8915 8916 void positionAtCursor(final int offset, boolean bottom) { 8917 addPositionToTouchUpFilter(offset); 8918 final int width = mDrawable.getIntrinsicWidth(); 8919 final int height = mDrawable.getIntrinsicHeight(); 8920 final int line = mLayout.getLineForOffset(offset); 8921 final int lineTop = mLayout.getLineTop(line); 8922 final int lineBottom = mLayout.getLineBottom(line); 8923 8924 final Rect bounds = sCursorControllerTempRect; 8925 bounds.left = (int) (mLayout.getPrimaryHorizontal(offset) - mHotspotX) 8926 + TextView.this.mScrollX; 8927 bounds.top = (bottom ? lineBottom : lineTop - mHeight) + TextView.this.mScrollY; 8928 8929 bounds.right = bounds.left + width; 8930 bounds.bottom = bounds.top + height; 8931 8932 convertFromViewportToContentCoordinates(bounds); 8933 moveTo(bounds.left, bounds.top); 8934 } 8935 8936 void showPastePopupWindow() { 8937 if (mIsInsertionHandle) { 8938 if (mPastePopupWindow == null) { 8939 // Lazy initialisation: create when actually shown only. 8940 mPastePopupWindow = new PastePopupMenu(); 8941 } 8942 mPastePopupWindow.show(); 8943 } 8944 } 8945 } 8946 8947 private class InsertionPointCursorController implements CursorController { 8948 private static final int DELAY_BEFORE_FADE_OUT = 4100; 8949 private static final int DELAY_BEFORE_PASTE = 2000; 8950 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; 8951 8952 // The cursor controller image. Lazily created. 8953 private HandleView mHandle; 8954 private Runnable mHider; 8955 private Runnable mPastePopupShower; 8956 8957 public void show() { 8958 show(DELAY_BEFORE_PASTE); 8959 } 8960 8961 public void show(int delayBeforePaste) { 8962 updatePosition(); 8963 hideDelayed(); 8964 getHandle().show(); 8965 removePastePopupCallback(); 8966 final long durationSinceCutOrCopy = SystemClock.uptimeMillis() - sLastCutOrCopyTime; 8967 if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) { 8968 delayBeforePaste = 0; 8969 } 8970 if (delayBeforePaste == 0 || canPaste()) { 8971 if (mPastePopupShower == null) { 8972 mPastePopupShower = new Runnable() { 8973 public void run() { 8974 getHandle().showPastePopupWindow(); 8975 } 8976 }; 8977 } 8978 postDelayed(mPastePopupShower, delayBeforePaste); 8979 } 8980 } 8981 8982 private void removePastePopupCallback() { 8983 if (mPastePopupShower != null) { 8984 removeCallbacks(mPastePopupShower); 8985 } 8986 } 8987 8988 private void removeHiderCallback() { 8989 if (mHider != null) { 8990 removeCallbacks(mHider); 8991 } 8992 } 8993 8994 public void hide() { 8995 if (mHandle != null) { 8996 mHandle.hide(); 8997 } 8998 removeHiderCallback(); 8999 removePastePopupCallback(); 9000 } 9001 9002 private void hideDelayed() { 9003 removeHiderCallback(); 9004 if (mHider == null) { 9005 mHider = new Runnable() { 9006 public void run() { 9007 hide(); 9008 } 9009 }; 9010 } 9011 postDelayed(mHider, DELAY_BEFORE_FADE_OUT); 9012 } 9013 9014 public boolean isShowing() { 9015 return mHandle != null && mHandle.isShowing(); 9016 } 9017 9018 public void updatePosition(HandleView handle, int x, int y) { 9019 final int previousOffset = getSelectionStart(); 9020 int offset = getHysteresisOffset(x, y, previousOffset); 9021 9022 if (offset != previousOffset) { 9023 updateOffset(handle, offset); 9024 } 9025 hideDelayed(); 9026 } 9027 9028 public void updateOffset(HandleView handle, int offset) { 9029 Selection.setSelection((Spannable) mText, offset); 9030 updatePosition(); 9031 } 9032 9033 public void updatePosition() { 9034 final int offset = getSelectionStart(); 9035 9036 if (offset < 0) { 9037 // Should never happen, safety check. 9038 Log.w(LOG_TAG, "Update cursor controller position called with no cursor"); 9039 hide(); 9040 return; 9041 } 9042 9043 getHandle().positionAtCursor(offset, true); 9044 } 9045 9046 public int getCurrentOffset(HandleView handle) { 9047 return getSelectionStart(); 9048 } 9049 9050 public boolean onTouchEvent(MotionEvent ev) { 9051 return false; 9052 } 9053 9054 public void onTouchModeChanged(boolean isInTouchMode) { 9055 if (!isInTouchMode) { 9056 hide(); 9057 } 9058 } 9059 9060 private HandleView getHandle() { 9061 if (mHandle == null) { 9062 mHandle = new HandleView(this, HandleView.CENTER); 9063 } 9064 return mHandle; 9065 } 9066 9067 @Override 9068 public void onDetached() { 9069 removeHiderCallback(); 9070 removePastePopupCallback(); 9071 } 9072 } 9073 9074 private class SelectionModifierCursorController implements CursorController { 9075 // The cursor controller images, lazily created when shown. 9076 private HandleView mStartHandle, mEndHandle; 9077 // The offsets of that last touch down event. Remembered to start selection there. 9078 private int mMinTouchOffset, mMaxTouchOffset; 9079 // Whether selection anchors are active 9080 private boolean mIsShowing; 9081 9082 // Double tap detection 9083 private long mPreviousTapUpTime = 0; 9084 private int mPreviousTapPositionX; 9085 private int mPreviousTapPositionY; 9086 9087 SelectionModifierCursorController() { 9088 resetTouchOffsets(); 9089 } 9090 9091 public void show() { 9092 if (isInBatchEditMode()) { 9093 return; 9094 } 9095 9096 // Lazy object creation has to be done before updatePosition() is called. 9097 if (mStartHandle == null) mStartHandle = new HandleView(this, HandleView.LEFT); 9098 if (mEndHandle == null) mEndHandle = new HandleView(this, HandleView.RIGHT); 9099 9100 mIsShowing = true; 9101 updatePosition(); 9102 9103 mStartHandle.show(); 9104 mEndHandle.show(); 9105 9106 hideInsertionPointCursorController(); 9107 } 9108 9109 public void hide() { 9110 if (mStartHandle != null) mStartHandle.hide(); 9111 if (mEndHandle != null) mEndHandle.hide(); 9112 mIsShowing = false; 9113 } 9114 9115 public boolean isShowing() { 9116 return mIsShowing; 9117 } 9118 9119 public void cancelFadeOutAnimation() { 9120 hide(); 9121 } 9122 9123 public void updatePosition(HandleView handle, int x, int y) { 9124 int selectionStart = getSelectionStart(); 9125 int selectionEnd = getSelectionEnd(); 9126 9127 final int previousOffset = handle == mStartHandle ? selectionStart : selectionEnd; 9128 int offset = getHysteresisOffset(x, y, previousOffset); 9129 9130 // Handle the case where start and end are swapped, making sure start <= end 9131 if (handle == mStartHandle) { 9132 if (selectionStart == offset || offset > selectionEnd) { 9133 return; // no change, no need to redraw; 9134 } 9135 // If the user "closes" the selection entirely they were probably trying to 9136 // select a single character. Help them out. 9137 if (offset == selectionEnd) { 9138 offset = selectionEnd - 1; 9139 } 9140 selectionStart = offset; 9141 } else { 9142 if (selectionEnd == offset || offset < selectionStart) { 9143 return; // no change, no need to redraw; 9144 } 9145 // If the user "closes" the selection entirely they were probably trying to 9146 // select a single character. Help them out. 9147 if (offset == selectionStart) { 9148 offset = selectionStart + 1; 9149 } 9150 selectionEnd = offset; 9151 } 9152 9153 Selection.setSelection((Spannable) mText, selectionStart, selectionEnd); 9154 updatePosition(); 9155 } 9156 9157 public void updateOffset(HandleView handle, int offset) { 9158 int start = getSelectionStart(); 9159 int end = getSelectionEnd(); 9160 9161 if (mStartHandle == handle) { 9162 start = offset; 9163 } else { 9164 end = offset; 9165 } 9166 9167 Selection.setSelection((Spannable) mText, start, end); 9168 updatePosition(); 9169 } 9170 9171 public void updatePosition() { 9172 if (!isShowing()) { 9173 return; 9174 } 9175 9176 final int selectionStart = getSelectionStart(); 9177 final int selectionEnd = getSelectionEnd(); 9178 9179 if ((selectionStart < 0) || (selectionEnd < 0)) { 9180 // Should never happen, safety check. 9181 Log.w(LOG_TAG, "Update selection controller position called with no cursor"); 9182 hide(); 9183 return; 9184 } 9185 9186 // The handles have been created since the controller isShowing(). 9187 mStartHandle.positionAtCursor(selectionStart, true); 9188 mEndHandle.positionAtCursor(selectionEnd, true); 9189 } 9190 9191 public int getCurrentOffset(HandleView handle) { 9192 return mStartHandle == handle ? getSelectionStart() : getSelectionEnd(); 9193 } 9194 9195 public boolean onTouchEvent(MotionEvent event) { 9196 // This is done even when the View does not have focus, so that long presses can start 9197 // selection and tap can move cursor from this tap position. 9198 if (isTextEditable() || mTextIsSelectable) { 9199 switch (event.getActionMasked()) { 9200 case MotionEvent.ACTION_DOWN: 9201 final int x = (int) event.getX(); 9202 final int y = (int) event.getY(); 9203 9204 // Remember finger down position, to be able to start selection from there 9205 mMinTouchOffset = mMaxTouchOffset = getOffset(x, y); 9206 9207 // Double tap detection 9208 long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime; 9209 if (duration <= ViewConfiguration.getDoubleTapTimeout() && 9210 isPositionOnText(x, y)) { 9211 final int deltaX = x - mPreviousTapPositionX; 9212 final int deltaY = y - mPreviousTapPositionY; 9213 final int distanceSquared = deltaX * deltaX + deltaY * deltaY; 9214 if (distanceSquared < mSquaredTouchSlopDistance) { 9215 startSelectionActionMode(); 9216 mDiscardNextActionUp = true; 9217 } 9218 } 9219 9220 mPreviousTapPositionX = x; 9221 mPreviousTapPositionY = y; 9222 9223 break; 9224 9225 case MotionEvent.ACTION_POINTER_DOWN: 9226 case MotionEvent.ACTION_POINTER_UP: 9227 // Handle multi-point gestures. Keep min and max offset positions. 9228 // Only activated for devices that correctly handle multi-touch. 9229 if (mContext.getPackageManager().hasSystemFeature( 9230 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 9231 updateMinAndMaxOffsets(event); 9232 } 9233 break; 9234 9235 case MotionEvent.ACTION_UP: 9236 mPreviousTapUpTime = SystemClock.uptimeMillis(); 9237 break; 9238 } 9239 } 9240 return false; 9241 } 9242 9243 /** 9244 * @param event 9245 */ 9246 private void updateMinAndMaxOffsets(MotionEvent event) { 9247 int pointerCount = event.getPointerCount(); 9248 for (int index = 0; index < pointerCount; index++) { 9249 final int x = (int) event.getX(index); 9250 final int y = (int) event.getY(index); 9251 int offset = getOffset(x, y); 9252 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 9253 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 9254 } 9255 } 9256 9257 public int getMinTouchOffset() { 9258 return mMinTouchOffset; 9259 } 9260 9261 public int getMaxTouchOffset() { 9262 return mMaxTouchOffset; 9263 } 9264 9265 public void resetTouchOffsets() { 9266 mMinTouchOffset = mMaxTouchOffset = -1; 9267 } 9268 9269 /** 9270 * @return true iff this controller is currently used to move the selection start. 9271 */ 9272 public boolean isSelectionStartDragged() { 9273 return mStartHandle != null && mStartHandle.isDragging(); 9274 } 9275 9276 public void onTouchModeChanged(boolean isInTouchMode) { 9277 if (!isInTouchMode) { 9278 hide(); 9279 } 9280 } 9281 9282 @Override 9283 public void onDetached() {} 9284 } 9285 9286 private void hideInsertionPointCursorController() { 9287 // No need to create the controller to hide it. 9288 if (mInsertionPointCursorController != null) { 9289 mInsertionPointCursorController.hide(); 9290 } 9291 } 9292 9293 /** 9294 * Hides the insertion controller and stops text selection mode, hiding the selection controller 9295 */ 9296 private void hideControllers() { 9297 hideInsertionPointCursorController(); 9298 stopSelectionActionMode(); 9299 } 9300 9301 /** 9302 * Get the offset character closest to the specified absolute position. 9303 * 9304 * @param x The horizontal absolute position of a point on screen 9305 * @param y The vertical absolute position of a point on screen 9306 * @return the character offset for the character whose position is closest to the specified 9307 * position. Returns -1 if there is no layout. 9308 * 9309 * @hide 9310 */ 9311 public int getOffset(int x, int y) { 9312 if (getLayout() == null) return -1; 9313 final int line = getLineAtCoordinate(y); 9314 final int offset = getOffsetAtCoordinate(line, x); 9315 return offset; 9316 } 9317 9318 int getHysteresisOffset(int x, int y, int previousOffset) { 9319 final Layout layout = getLayout(); 9320 if (layout == null) return -1; 9321 9322 int line = getLineAtCoordinate(y); 9323 final int previousLine = layout.getLineForOffset(previousOffset); 9324 final int previousLineTop = layout.getLineTop(previousLine); 9325 final int previousLineBottom = layout.getLineBottom(previousLine); 9326 final int hysteresisThreshold = (previousLineBottom - previousLineTop) / 8; 9327 9328 // If new line is just before or after previous line and y position is less than 9329 // hysteresisThreshold away from previous line, keep cursor on previous line. 9330 if (((line == previousLine + 1) && ((y - previousLineBottom) < hysteresisThreshold)) || 9331 ((line == previousLine - 1) && ((previousLineTop - y) < hysteresisThreshold))) { 9332 line = previousLine; 9333 } 9334 9335 return getOffsetAtCoordinate(line, x); 9336 } 9337 9338 private int convertToLocalHorizontalCoordinate(int x) { 9339 x -= getTotalPaddingLeft(); 9340 // Clamp the position to inside of the view. 9341 x = Math.max(0, x); 9342 x = Math.min(getWidth() - getTotalPaddingRight() - 1, x); 9343 x += getScrollX(); 9344 return x; 9345 } 9346 9347 private int getLineAtCoordinate(int y) { 9348 y -= getTotalPaddingTop(); 9349 // Clamp the position to inside of the view. 9350 y = Math.max(0, y); 9351 y = Math.min(getHeight() - getTotalPaddingBottom() - 1, y); 9352 y += getScrollY(); 9353 return getLayout().getLineForVertical(y); 9354 } 9355 9356 private int getOffsetAtCoordinate(int line, int x) { 9357 x = convertToLocalHorizontalCoordinate(x); 9358 return getLayout().getOffsetForHorizontal(line, x); 9359 } 9360 9361 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 9362 * in the view. Returns false when the position is in the empty space of left/right of text. 9363 */ 9364 private boolean isPositionOnText(int x, int y) { 9365 if (getLayout() == null) return false; 9366 9367 final int line = getLineAtCoordinate(y); 9368 x = convertToLocalHorizontalCoordinate(x); 9369 9370 if (x < getLayout().getLineLeft(line)) return false; 9371 if (x > getLayout().getLineRight(line)) return false; 9372 return true; 9373 } 9374 9375 @Override 9376 public boolean onDragEvent(DragEvent event) { 9377 switch (event.getAction()) { 9378 case DragEvent.ACTION_DRAG_STARTED: 9379 return hasInsertionController(); 9380 9381 case DragEvent.ACTION_DRAG_ENTERED: 9382 TextView.this.requestFocus(); 9383 return true; 9384 9385 case DragEvent.ACTION_DRAG_LOCATION: 9386 final int offset = getOffset((int) event.getX(), (int) event.getY()); 9387 Selection.setSelection((Spannable)mText, offset); 9388 return true; 9389 9390 case DragEvent.ACTION_DROP: 9391 onDrop(event); 9392 return true; 9393 9394 case DragEvent.ACTION_DRAG_ENDED: 9395 case DragEvent.ACTION_DRAG_EXITED: 9396 default: 9397 return true; 9398 } 9399 } 9400 9401 private void onDrop(DragEvent event) { 9402 StringBuilder content = new StringBuilder(""); 9403 ClipData clipData = event.getClipData(); 9404 final int itemCount = clipData.getItemCount(); 9405 for (int i=0; i < itemCount; i++) { 9406 Item item = clipData.getItemAt(i); 9407 content.append(item.coerceToText(TextView.this.mContext)); 9408 } 9409 9410 final int offset = getOffset((int) event.getX(), (int) event.getY()); 9411 9412 Object localState = event.getLocalState(); 9413 DragLocalState dragLocalState = null; 9414 if (localState instanceof DragLocalState) { 9415 dragLocalState = (DragLocalState) localState; 9416 } 9417 boolean dragDropIntoItself = dragLocalState != null && 9418 dragLocalState.sourceTextView == this; 9419 9420 if (dragDropIntoItself) { 9421 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 9422 // A drop inside the original selection discards the drop. 9423 return; 9424 } 9425 } 9426 9427 final int originalLength = mText.length(); 9428 long minMax = prepareSpacesAroundPaste(offset, offset, content); 9429 int min = extractRangeStartFromLong(minMax); 9430 int max = extractRangeEndFromLong(minMax); 9431 9432 Selection.setSelection((Spannable) mText, max); 9433 ((Editable) mText).replace(min, max, content); 9434 9435 if (dragDropIntoItself) { 9436 int dragSourceStart = dragLocalState.start; 9437 int dragSourceEnd = dragLocalState.end; 9438 if (max <= dragSourceStart) { 9439 // Inserting text before selection has shifted positions 9440 final int shift = mText.length() - originalLength; 9441 dragSourceStart += shift; 9442 dragSourceEnd += shift; 9443 } 9444 9445 // Delete original selection 9446 ((Editable) mText).delete(dragSourceStart, dragSourceEnd); 9447 9448 // Make sure we do not leave two adjacent spaces. 9449 if ((dragSourceStart == 0 || 9450 Character.isSpaceChar(mTransformed.charAt(dragSourceStart - 1))) && 9451 (dragSourceStart == mText.length() || 9452 Character.isSpaceChar(mTransformed.charAt(dragSourceStart)))) { 9453 final int pos = dragSourceStart == mText.length() ? 9454 dragSourceStart - 1 : dragSourceStart; 9455 ((Editable) mText).delete(pos, pos + 1); 9456 } 9457 } 9458 } 9459 9460 /** 9461 * @return True if this view supports insertion handles. 9462 */ 9463 boolean hasInsertionController() { 9464 return mInsertionControllerEnabled; 9465 } 9466 9467 /** 9468 * @return True if this view supports selection handles. 9469 */ 9470 boolean hasSelectionController() { 9471 return mSelectionControllerEnabled; 9472 } 9473 9474 InsertionPointCursorController getInsertionController() { 9475 if (!mInsertionControllerEnabled) { 9476 return null; 9477 } 9478 9479 if (mInsertionPointCursorController == null) { 9480 mInsertionPointCursorController = new InsertionPointCursorController(); 9481 9482 final ViewTreeObserver observer = getViewTreeObserver(); 9483 if (observer != null) { 9484 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 9485 } 9486 } 9487 9488 return mInsertionPointCursorController; 9489 } 9490 9491 SelectionModifierCursorController getSelectionController() { 9492 if (!mSelectionControllerEnabled) { 9493 return null; 9494 } 9495 9496 if (mSelectionModifierCursorController == null) { 9497 mSelectionModifierCursorController = new SelectionModifierCursorController(); 9498 9499 final ViewTreeObserver observer = getViewTreeObserver(); 9500 if (observer != null) { 9501 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 9502 } 9503 } 9504 9505 return mSelectionModifierCursorController; 9506 } 9507 9508 boolean isInBatchEditMode() { 9509 final InputMethodState ims = mInputMethodState; 9510 if (ims != null) { 9511 return ims.mBatchEditNesting > 0; 9512 } 9513 return mInBatchEditControllers; 9514 } 9515 9516 @ViewDebug.ExportedProperty(category = "text") 9517 private CharSequence mText; 9518 private CharSequence mTransformed; 9519 private BufferType mBufferType = BufferType.NORMAL; 9520 9521 private int mInputType = EditorInfo.TYPE_NULL; 9522 private CharSequence mHint; 9523 private Layout mHintLayout; 9524 9525 private KeyListener mInput; 9526 9527 private MovementMethod mMovement; 9528 private TransformationMethod mTransformation; 9529 private ChangeWatcher mChangeWatcher; 9530 9531 private ArrayList<TextWatcher> mListeners = null; 9532 9533 // display attributes 9534 private final TextPaint mTextPaint; 9535 private boolean mUserSetTextScaleX; 9536 private final Paint mHighlightPaint; 9537 private int mHighlightColor = 0xCC475925; 9538 /** 9539 * This is temporarily visible to fix bug 3085564 in webView. Do not rely on 9540 * this field being protected. Will be restored as private when lineHeight 9541 * feature request 3215097 is implemented 9542 * @hide 9543 */ 9544 protected Layout mLayout; 9545 9546 private long mShowCursor; 9547 private Blink mBlink; 9548 private boolean mCursorVisible = true; 9549 9550 // Cursor Controllers. 9551 private InsertionPointCursorController mInsertionPointCursorController; 9552 private SelectionModifierCursorController mSelectionModifierCursorController; 9553 private ActionMode mSelectionActionMode; 9554 private boolean mInsertionControllerEnabled; 9555 private boolean mSelectionControllerEnabled; 9556 private boolean mInBatchEditControllers; 9557 9558 // These are needed to desambiguate a long click. If the long click comes from ones of these, we 9559 // select from the current cursor position. Otherwise, select from long pressed position. 9560 private boolean mDPadCenterIsDown = false; 9561 private boolean mEnterKeyIsDown = false; 9562 private boolean mContextMenuTriggeredByKey = false; 9563 // Created once and shared by different CursorController helper methods. 9564 // Only one cursor controller is active at any time which prevent race conditions. 9565 private static Rect sCursorControllerTempRect = new Rect(); 9566 9567 private boolean mSelectAllOnFocus = false; 9568 9569 private int mGravity = Gravity.TOP | Gravity.LEFT; 9570 private boolean mHorizontallyScrolling; 9571 9572 private int mAutoLinkMask; 9573 private boolean mLinksClickable = true; 9574 9575 private float mSpacingMult = 1; 9576 private float mSpacingAdd = 0; 9577 private boolean mTextIsSelectable = false; 9578 9579 private static final int LINES = 1; 9580 private static final int EMS = LINES; 9581 private static final int PIXELS = 2; 9582 9583 private int mMaximum = Integer.MAX_VALUE; 9584 private int mMaxMode = LINES; 9585 private int mMinimum = 0; 9586 private int mMinMode = LINES; 9587 9588 private int mMaxWidth = Integer.MAX_VALUE; 9589 private int mMaxWidthMode = PIXELS; 9590 private int mMinWidth = 0; 9591 private int mMinWidthMode = PIXELS; 9592 9593 private boolean mSingleLine; 9594 private int mDesiredHeightAtMeasure = -1; 9595 private boolean mIncludePad = true; 9596 9597 // tmp primitives, so we don't alloc them on each draw 9598 private Path mHighlightPath; 9599 private boolean mHighlightPathBogus = true; 9600 private static final RectF sTempRect = new RectF(); 9601 9602 // XXX should be much larger 9603 private static final int VERY_WIDE = 16384; 9604 9605 private static final int BLINK = 500; 9606 9607 private static final int ANIMATED_SCROLL_GAP = 250; 9608 private long mLastScroll; 9609 private Scroller mScroller = null; 9610 9611 private BoringLayout.Metrics mBoring; 9612 private BoringLayout.Metrics mHintBoring; 9613 9614 private BoringLayout mSavedLayout, mSavedHintLayout; 9615 9616 private static final InputFilter[] NO_FILTERS = new InputFilter[0]; 9617 private InputFilter[] mFilters = NO_FILTERS; 9618 private static final Spanned EMPTY_SPANNED = new SpannedString(""); 9619 private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 9620 // System wide time for last cut or copy action. 9621 private static long sLastCutOrCopyTime; 9622 // Used to highlight a word when it is corrected by the IME 9623 private CorrectionHighlighter mCorrectionHighlighter; 9624 // New state used to change background based on whether this TextView is multiline. 9625 private static final int[] MULTILINE_STATE_SET = { R.attr.state_multiline }; 9626} 9627