WebTextView.java revision 7ae34197b03313dd3f278b1a995252040ae6e2df
1/* 2 * Copyright (C) 2007 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.webkit; 18 19import android.content.Context; 20import android.graphics.Canvas; 21import android.graphics.Color; 22import android.graphics.ColorFilter; 23import android.graphics.Paint; 24import android.graphics.PixelFormat; 25import android.graphics.Rect; 26import android.graphics.drawable.Drawable; 27import android.text.Editable; 28import android.text.InputFilter; 29import android.text.Selection; 30import android.text.Spannable; 31import android.text.TextPaint; 32import android.text.TextUtils; 33import android.text.method.MovementMethod; 34import android.text.method.Touch; 35import android.util.Log; 36import android.view.Gravity; 37import android.view.KeyCharacterMap; 38import android.view.KeyEvent; 39import android.view.MotionEvent; 40import android.view.View; 41import android.view.ViewConfiguration; 42import android.view.ViewGroup; 43import android.view.inputmethod.EditorInfo; 44import android.view.inputmethod.InputMethodManager; 45import android.view.inputmethod.InputConnection; 46import android.widget.AbsoluteLayout.LayoutParams; 47import android.widget.ArrayAdapter; 48import android.widget.AutoCompleteTextView; 49import android.widget.TextView; 50 51import java.util.ArrayList; 52 53/** 54 * WebTextView is a specialized version of EditText used by WebView 55 * to overlay html textfields (and textareas) to use our standard 56 * text editing. 57 */ 58/* package */ class WebTextView extends AutoCompleteTextView { 59 60 static final String LOGTAG = "webtextview"; 61 62 private WebView mWebView; 63 private boolean mSingle; 64 private int mWidthSpec; 65 private int mHeightSpec; 66 private int mNodePointer; 67 // FIXME: This is a hack for blocking unmatched key ups, in particular 68 // on the enter key. The method for blocking unmatched key ups prevents 69 // the shift key from working properly. 70 private boolean mGotEnterDown; 71 private int mMaxLength; 72 // Keep track of the text before the change so we know whether we actually 73 // need to send down the DOM events. 74 private String mPreChange; 75 private Drawable mBackground; 76 // Variables for keeping track of the touch down, to send to the WebView 77 // when a drag starts 78 private float mDragStartX; 79 private float mDragStartY; 80 private long mDragStartTime; 81 private boolean mDragSent; 82 // True if the most recent drag event has caused either the TextView to 83 // scroll or the web page to scroll. Gets reset after a touch down. 84 private boolean mScrolled; 85 // Gets set to true when the the IME jumps to the next textfield. When this 86 // happens, the next time the user hits a key it is okay for the focus 87 // pointer to not match the WebTextView's node pointer 88 private boolean mOkayForFocusNotToMatch; 89 // Whether or not a selection change was generated from webkit. If it was, 90 // we do not need to pass the selection back to webkit. 91 private boolean mFromWebKit; 92 private boolean mGotTouchDown; 93 // Array to store the final character added in onTextChanged, so that its 94 // KeyEvents may be determined. 95 private char[] mCharacter = new char[1]; 96 // This is used to reset the length filter when on a textfield 97 // with no max length. 98 // FIXME: This can be replaced with TextView.NO_FILTERS if that 99 // is made public/protected. 100 private static final InputFilter[] NO_FILTERS = new InputFilter[0]; 101 102 /** 103 * Create a new WebTextView. 104 * @param context The Context for this WebTextView. 105 * @param webView The WebView that created this. 106 */ 107 /* package */ WebTextView(Context context, WebView webView) { 108 super(context); 109 mWebView = webView; 110 mMaxLength = -1; 111 } 112 113 @Override 114 public boolean dispatchKeyEvent(KeyEvent event) { 115 if (event.isSystem()) { 116 return super.dispatchKeyEvent(event); 117 } 118 // Treat ACTION_DOWN and ACTION MULTIPLE the same 119 boolean down = event.getAction() != KeyEvent.ACTION_UP; 120 int keyCode = event.getKeyCode(); 121 122 boolean isArrowKey = false; 123 switch(keyCode) { 124 case KeyEvent.KEYCODE_DPAD_LEFT: 125 case KeyEvent.KEYCODE_DPAD_RIGHT: 126 case KeyEvent.KEYCODE_DPAD_UP: 127 case KeyEvent.KEYCODE_DPAD_DOWN: 128 if (!mWebView.nativeCursorMatchesFocus()) { 129 return down ? mWebView.onKeyDown(keyCode, event) : mWebView 130 .onKeyUp(keyCode, event); 131 132 } 133 isArrowKey = true; 134 break; 135 } 136 if (!isArrowKey && !mOkayForFocusNotToMatch 137 && mWebView.nativeFocusNodePointer() != mNodePointer) { 138 mWebView.nativeClearCursor(); 139 // Do not call remove() here, which hides the soft keyboard. If 140 // the soft keyboard is being displayed, the user will still want 141 // it there. 142 mWebView.removeView(this); 143 mWebView.requestFocus(); 144 return mWebView.dispatchKeyEvent(event); 145 } 146 // After a jump to next textfield and the first key press, the cursor 147 // and focus will once again match, so reset this value. 148 mOkayForFocusNotToMatch = false; 149 150 Spannable text = (Spannable) getText(); 151 int oldLength = text.length(); 152 // Normally the delete key's dom events are sent via onTextChanged. 153 // However, if the length is zero, the text did not change, so we 154 // go ahead and pass the key down immediately. 155 if (KeyEvent.KEYCODE_DEL == keyCode && 0 == oldLength) { 156 sendDomEvent(event); 157 return true; 158 } 159 160 if ((mSingle && KeyEvent.KEYCODE_ENTER == keyCode)) { 161 if (isPopupShowing()) { 162 return super.dispatchKeyEvent(event); 163 } 164 if (!down) { 165 // Hide the keyboard, since the user has just submitted this 166 // form. The submission happens thanks to the two calls 167 // to sendDomEvent. 168 InputMethodManager.getInstance(mContext) 169 .hideSoftInputFromWindow(getWindowToken(), 0); 170 sendDomEvent(new KeyEvent(KeyEvent.ACTION_DOWN, keyCode)); 171 sendDomEvent(event); 172 } 173 return super.dispatchKeyEvent(event); 174 } else if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode) { 175 // Note that this handles center key and trackball. 176 if (isPopupShowing()) { 177 return super.dispatchKeyEvent(event); 178 } 179 if (!mWebView.nativeCursorMatchesFocus()) { 180 return down ? mWebView.onKeyDown(keyCode, event) : mWebView 181 .onKeyUp(keyCode, event); 182 } 183 // Center key should be passed to a potential onClick 184 if (!down) { 185 mWebView.shortPressOnTextField(); 186 } 187 // Pass to super to handle longpress. 188 return super.dispatchKeyEvent(event); 189 } 190 191 // Ensure there is a layout so arrow keys are handled properly. 192 if (getLayout() == null) { 193 measure(mWidthSpec, mHeightSpec); 194 } 195 int oldStart = Selection.getSelectionStart(text); 196 int oldEnd = Selection.getSelectionEnd(text); 197 198 boolean maxedOut = mMaxLength != -1 && oldLength == mMaxLength; 199 // If we are at max length, and there is a selection rather than a 200 // cursor, we need to store the text to compare later, since the key 201 // may have changed the string. 202 String oldText; 203 if (maxedOut && oldEnd != oldStart) { 204 oldText = text.toString(); 205 } else { 206 oldText = ""; 207 } 208 if (super.dispatchKeyEvent(event)) { 209 // If the WebTextView handled the key it was either an alphanumeric 210 // key, a delete, or a movement within the text. All of those are 211 // ok to pass to javascript. 212 213 // UNLESS there is a max length determined by the html. In that 214 // case, if the string was already at the max length, an 215 // alphanumeric key will be erased by the LengthFilter, 216 // so do not pass down to javascript, and instead 217 // return true. If it is an arrow key or a delete key, we can go 218 // ahead and pass it down. 219 if (KeyEvent.KEYCODE_ENTER == keyCode) { 220 // For multi-line text boxes, newlines will 221 // trigger onTextChanged for key down (which will send both 222 // key up and key down) but not key up. 223 mGotEnterDown = true; 224 } 225 if (maxedOut && !isArrowKey && keyCode != KeyEvent.KEYCODE_DEL) { 226 if (oldEnd == oldStart) { 227 // Return true so the key gets dropped. 228 return true; 229 } else if (!oldText.equals(getText().toString())) { 230 // FIXME: This makes the text work properly, but it 231 // does not pass down the key event, so it may not 232 // work for a textfield that has the type of 233 // behavior of GoogleSuggest. That said, it is 234 // unlikely that a site would combine the two in 235 // one textfield. 236 Spannable span = (Spannable) getText(); 237 int newStart = Selection.getSelectionStart(span); 238 int newEnd = Selection.getSelectionEnd(span); 239 mWebView.replaceTextfieldText(0, oldLength, span.toString(), 240 newStart, newEnd); 241 return true; 242 } 243 } 244 /* FIXME: 245 * In theory, we would like to send the events for the arrow keys. 246 * However, the TextView can arbitrarily change the selection (i.e. 247 * long press followed by using the trackball). Therefore, we keep 248 * in sync with the TextView via onSelectionChanged. If we also 249 * send the DOM event, we lose the correct selection. 250 if (isArrowKey) { 251 // Arrow key does not change the text, but we still want to send 252 // the DOM events. 253 sendDomEvent(event); 254 } 255 */ 256 return true; 257 } 258 // Ignore the key up event for newlines. This prevents 259 // multiple newlines in the native textarea. 260 if (mGotEnterDown && !down) { 261 return true; 262 } 263 // if it is a navigation key, pass it to WebView 264 if (isArrowKey) { 265 // WebView check the trackballtime in onKeyDown to avoid calling 266 // native from both trackball and key handling. As this is called 267 // from WebTextView, we always want WebView to check with native. 268 // Reset trackballtime to ensure it. 269 mWebView.resetTrackballTime(); 270 return down ? mWebView.onKeyDown(keyCode, event) : mWebView 271 .onKeyUp(keyCode, event); 272 } 273 return false; 274 } 275 276 /** 277 * Create a fake touch up event at (x,y) with respect to this WebTextView. 278 * This is used by WebView to act as though a touch event which happened 279 * before we placed the WebTextView actually hit it, so that it can place 280 * the cursor accordingly. 281 */ 282 /* package */ void fakeTouchEvent(float x, float y) { 283 // We need to ensure that there is a Layout, since the Layout is used 284 // in determining where to place the cursor. 285 if (getLayout() == null) { 286 measure(mWidthSpec, mHeightSpec); 287 } 288 // Create a fake touch up, which is used to place the cursor. 289 MotionEvent ev = MotionEvent.obtain(0, 0, MotionEvent.ACTION_UP, 290 x, y, 0); 291 onTouchEvent(ev); 292 ev.recycle(); 293 } 294 295 /** 296 * Determine whether this WebTextView currently represents the node 297 * represented by ptr. 298 * @param ptr Pointer to a node to compare to. 299 * @return boolean Whether this WebTextView already represents the node 300 * pointed to by ptr. 301 */ 302 /* package */ boolean isSameTextField(int ptr) { 303 return ptr == mNodePointer; 304 } 305 306 @Override public InputConnection onCreateInputConnection( 307 EditorInfo outAttrs) { 308 InputConnection connection = super.onCreateInputConnection(outAttrs); 309 if (mWebView != null) { 310 // Use the name of the textfield + the url. Use backslash as an 311 // arbitrary separator. 312 outAttrs.fieldName = mWebView.nativeFocusCandidateName() + "\\" 313 + mWebView.getUrl(); 314 } 315 return connection; 316 } 317 318 @Override 319 public void onEditorAction(int actionCode) { 320 switch (actionCode) { 321 case EditorInfo.IME_ACTION_NEXT: 322 mWebView.nativeMoveCursorToNextTextInput(); 323 // Preemptively rebuild the WebTextView, so that the action will 324 // be set properly. 325 mWebView.rebuildWebTextView(); 326 // Since the cursor will no longer be in the same place as the 327 // focus, set the focus controller back to inactive 328 mWebView.setFocusControllerInactive(); 329 mOkayForFocusNotToMatch = true; 330 break; 331 case EditorInfo.IME_ACTION_DONE: 332 super.onEditorAction(actionCode); 333 break; 334 case EditorInfo.IME_ACTION_GO: 335 // Send an enter and hide the soft keyboard 336 InputMethodManager.getInstance(mContext) 337 .hideSoftInputFromWindow(getWindowToken(), 0); 338 sendDomEvent(new KeyEvent(KeyEvent.ACTION_DOWN, 339 KeyEvent.KEYCODE_ENTER)); 340 sendDomEvent(new KeyEvent(KeyEvent.ACTION_UP, 341 KeyEvent.KEYCODE_ENTER)); 342 343 default: 344 break; 345 } 346 } 347 348 @Override 349 protected void onSelectionChanged(int selStart, int selEnd) { 350 if (!mFromWebKit && mWebView != null) { 351 if (DebugFlags.WEB_TEXT_VIEW) { 352 Log.v(LOGTAG, "onSelectionChanged selStart=" + selStart 353 + " selEnd=" + selEnd); 354 } 355 mWebView.setSelection(selStart, selEnd); 356 } 357 } 358 359 @Override 360 protected void onTextChanged(CharSequence s,int start,int before,int count){ 361 super.onTextChanged(s, start, before, count); 362 String postChange = s.toString(); 363 // Prevent calls to setText from invoking onTextChanged (since this will 364 // mean we are on a different textfield). Also prevent the change when 365 // going from a textfield with a string of text to one with a smaller 366 // limit on text length from registering the onTextChanged event. 367 if (mPreChange == null || mPreChange.equals(postChange) || 368 (mMaxLength > -1 && mPreChange.length() > mMaxLength && 369 mPreChange.substring(0, mMaxLength).equals(postChange))) { 370 return; 371 } 372 mPreChange = postChange; 373 // This was simply a delete or a cut, so just delete the selection. 374 if (before > 0 && 0 == count) { 375 mWebView.deleteSelection(start, start + before); 376 // For this and all changes to the text, update our cache 377 updateCachedTextfield(); 378 return; 379 } 380 // Find the last character being replaced. If it can be represented by 381 // events, we will pass them to native (after replacing the beginning 382 // of the changed text), so we can see javascript events. 383 // Otherwise, replace the text being changed (including the last 384 // character) in the textfield. 385 TextUtils.getChars(s, start + count - 1, start + count, mCharacter, 0); 386 KeyCharacterMap kmap = 387 KeyCharacterMap.load(KeyCharacterMap.BUILT_IN_KEYBOARD); 388 KeyEvent[] events = kmap.getEvents(mCharacter); 389 boolean cannotUseKeyEvents = null == events; 390 int charactersFromKeyEvents = cannotUseKeyEvents ? 0 : 1; 391 if (count > 1 || cannotUseKeyEvents) { 392 String replace = s.subSequence(start, 393 start + count - charactersFromKeyEvents).toString(); 394 mWebView.replaceTextfieldText(start, start + before, replace, 395 start + count - charactersFromKeyEvents, 396 start + count - charactersFromKeyEvents); 397 } else { 398 // This corrects the selection which may have been affected by the 399 // trackball or auto-correct. 400 if (DebugFlags.WEB_TEXT_VIEW) { 401 Log.v(LOGTAG, "onTextChanged start=" + start 402 + " start + before=" + (start + before)); 403 } 404 mWebView.setSelection(start, start + before); 405 } 406 if (!cannotUseKeyEvents) { 407 int length = events.length; 408 for (int i = 0; i < length; i++) { 409 // We never send modifier keys to native code so don't send them 410 // here either. 411 if (!KeyEvent.isModifierKey(events[i].getKeyCode())) { 412 sendDomEvent(events[i]); 413 } 414 } 415 } 416 updateCachedTextfield(); 417 } 418 419 @Override 420 public boolean onTouchEvent(MotionEvent event) { 421 switch (event.getAction()) { 422 case MotionEvent.ACTION_DOWN: 423 super.onTouchEvent(event); 424 // This event may be the start of a drag, so store it to pass to the 425 // WebView if it is. 426 mDragStartX = event.getX(); 427 mDragStartY = event.getY(); 428 mDragStartTime = event.getEventTime(); 429 mDragSent = false; 430 mScrolled = false; 431 mGotTouchDown = true; 432 break; 433 case MotionEvent.ACTION_MOVE: 434 int slop = ViewConfiguration.get(mContext).getScaledTouchSlop(); 435 Spannable buffer = getText(); 436 int initialScrollX = Touch.getInitialScrollX(this, buffer); 437 int initialScrollY = Touch.getInitialScrollY(this, buffer); 438 super.onTouchEvent(event); 439 if (Math.abs(mScrollX - initialScrollX) > slop 440 || Math.abs(mScrollY - initialScrollY) > slop) { 441 if (mWebView != null) { 442 mWebView.scrollFocusedTextInput(mScrollX, mScrollY); 443 } 444 mScrolled = true; 445 return true; 446 } 447 if (Math.abs((int) event.getX() - mDragStartX) < slop 448 && Math.abs((int) event.getY() - mDragStartY) < slop) { 449 // If the user has not scrolled further than slop, we should not 450 // send the drag. Instead, do nothing, and when the user lifts 451 // their finger, we will change the selection. 452 return true; 453 } 454 if (mWebView != null) { 455 // Only want to set the initial state once. 456 if (!mDragSent) { 457 mWebView.initiateTextFieldDrag(mDragStartX, mDragStartY, 458 mDragStartTime); 459 mDragSent = true; 460 } 461 boolean scrolled = mWebView.textFieldDrag(event); 462 if (scrolled) { 463 mScrolled = true; 464 cancelLongPress(); 465 return true; 466 } 467 } 468 return false; 469 case MotionEvent.ACTION_UP: 470 case MotionEvent.ACTION_CANCEL: 471 if (!mScrolled) { 472 // If the page scrolled, or the TextView scrolled, we do not 473 // want to change the selection 474 cancelLongPress(); 475 if (mGotTouchDown && mWebView != null) { 476 mWebView.touchUpOnTextField(event); 477 } 478 } 479 // Necessary for the WebView to reset its state 480 if (mWebView != null && mDragSent) { 481 mWebView.onTouchEvent(event); 482 } 483 mGotTouchDown = false; 484 break; 485 default: 486 break; 487 } 488 return true; 489 } 490 491 @Override 492 public boolean onTrackballEvent(MotionEvent event) { 493 if (isPopupShowing()) { 494 return super.onTrackballEvent(event); 495 } 496 if (event.getAction() != MotionEvent.ACTION_MOVE) { 497 return false; 498 } 499 // If the Cursor is not on the text input, webview should handle the 500 // trackball 501 if (!mWebView.nativeCursorMatchesFocus()) { 502 return mWebView.onTrackballEvent(event); 503 } 504 Spannable text = (Spannable) getText(); 505 MovementMethod move = getMovementMethod(); 506 if (move != null && getLayout() != null && 507 move.onTrackballEvent(this, text, event)) { 508 // Selection is changed in onSelectionChanged 509 return true; 510 } 511 return false; 512 } 513 514 /** 515 * Remove this WebTextView from its host WebView, and return 516 * focus to the host. 517 */ 518 /* package */ void remove() { 519 // hide the soft keyboard when the edit text is out of focus 520 InputMethodManager.getInstance(mContext).hideSoftInputFromWindow( 521 getWindowToken(), 0); 522 mWebView.removeView(this); 523 mWebView.requestFocus(); 524 } 525 526 /* package */ void bringIntoView() { 527 if (getLayout() != null) { 528 bringPointIntoView(Selection.getSelectionEnd(getText())); 529 } 530 } 531 532 /** 533 * Send the DOM events for the specified event. 534 * @param event KeyEvent to be translated into a DOM event. 535 */ 536 private void sendDomEvent(KeyEvent event) { 537 mWebView.passToJavaScript(getText().toString(), event); 538 } 539 540 /** 541 * Always use this instead of setAdapter, as this has features specific to 542 * the WebTextView. 543 */ 544 public void setAdapterCustom(AutoCompleteAdapter adapter) { 545 if (adapter != null) { 546 setInputType(EditorInfo.TYPE_TEXT_FLAG_AUTO_COMPLETE); 547 adapter.setTextView(this); 548 } 549 super.setAdapter(adapter); 550 } 551 552 /** 553 * This is a special version of ArrayAdapter which changes its text size 554 * to match the text size of its host TextView. 555 */ 556 public static class AutoCompleteAdapter extends ArrayAdapter<String> { 557 private TextView mTextView; 558 559 public AutoCompleteAdapter(Context context, ArrayList<String> entries) { 560 super(context, com.android.internal.R.layout 561 .search_dropdown_item_1line, entries); 562 } 563 564 /** 565 * {@inheritDoc} 566 */ 567 public View getView(int position, View convertView, ViewGroup parent) { 568 TextView tv = 569 (TextView) super.getView(position, convertView, parent); 570 if (tv != null && mTextView != null) { 571 tv.setTextSize(mTextView.getTextSize()); 572 } 573 return tv; 574 } 575 576 /** 577 * Set the TextView so we can match its text size. 578 */ 579 private void setTextView(TextView tv) { 580 mTextView = tv; 581 } 582 } 583 584 /** 585 * Determine whether to use the system-wide password disguising method, 586 * or to use none. 587 * @param inPassword True if the textfield is a password field. 588 */ 589 /* package */ void setInPassword(boolean inPassword) { 590 if (inPassword) { 591 setInputType(EditorInfo.TYPE_CLASS_TEXT | EditorInfo. 592 TYPE_TEXT_VARIATION_PASSWORD); 593 createBackground(); 594 } 595 // For password fields, draw the WebTextView. For others, just show 596 // webkit's drawing. 597 setWillNotDraw(!inPassword); 598 setBackgroundDrawable(inPassword ? mBackground : null); 599 // For non-password fields, avoid the invals from TextView's blinking 600 // cursor 601 setCursorVisible(inPassword); 602 } 603 604 /** 605 * Private class used for the background of a password textfield. 606 */ 607 private static class OutlineDrawable extends Drawable { 608 public void draw(Canvas canvas) { 609 Rect bounds = getBounds(); 610 Paint paint = new Paint(); 611 paint.setAntiAlias(true); 612 // Draw the background. 613 paint.setColor(Color.WHITE); 614 canvas.drawRect(bounds, paint); 615 // Draw the outline. 616 paint.setStyle(Paint.Style.STROKE); 617 paint.setColor(Color.BLACK); 618 canvas.drawRect(bounds, paint); 619 } 620 // Always want it to be opaque. 621 public int getOpacity() { 622 return PixelFormat.OPAQUE; 623 } 624 // These are needed because they are abstract in Drawable. 625 public void setAlpha(int alpha) { } 626 public void setColorFilter(ColorFilter cf) { } 627 } 628 629 /** 630 * Create a background for the WebTextView and set up the paint for drawing 631 * the text. This way, we can see the password transformation of the 632 * system, which (optionally) shows the actual text before changing to dots. 633 * The background is necessary to hide the webkit-drawn text beneath. 634 */ 635 private void createBackground() { 636 if (mBackground != null) { 637 return; 638 } 639 mBackground = new OutlineDrawable(); 640 641 setGravity(Gravity.CENTER_VERTICAL); 642 // Turn on subpixel text, and turn off kerning, so it better matches 643 // the text in webkit. 644 TextPaint paint = getPaint(); 645 int flags = paint.getFlags() | Paint.SUBPIXEL_TEXT_FLAG | 646 Paint.ANTI_ALIAS_FLAG & ~Paint.DEV_KERN_TEXT_FLAG; 647 paint.setFlags(flags); 648 // Set the text color to black, regardless of the theme. This ensures 649 // that other applications that use embedded WebViews will properly 650 // display the text in password textfields. 651 setTextColor(Color.BLACK); 652 } 653 654 /* package */ void setMaxLength(int maxLength) { 655 mMaxLength = maxLength; 656 if (-1 == maxLength) { 657 setFilters(NO_FILTERS); 658 } else { 659 setFilters(new InputFilter[] { 660 new InputFilter.LengthFilter(maxLength) }); 661 } 662 } 663 664 /** 665 * Set the pointer for this node so it can be determined which node this 666 * WebTextView represents. 667 * @param ptr Integer representing the pointer to the node which this 668 * WebTextView represents. 669 */ 670 /* package */ void setNodePointer(int ptr) { 671 mNodePointer = ptr; 672 } 673 674 /** 675 * Determine the position and size of WebTextView, and add it to the 676 * WebView's view heirarchy. All parameters are presumed to be in 677 * view coordinates. Also requests Focus and sets the cursor to not 678 * request to be in view. 679 * @param x x-position of the textfield. 680 * @param y y-position of the textfield. 681 * @param width width of the textfield. 682 * @param height height of the textfield. 683 */ 684 /* package */ void setRect(int x, int y, int width, int height) { 685 LayoutParams lp = (LayoutParams) getLayoutParams(); 686 if (null == lp) { 687 lp = new LayoutParams(width, height, x, y); 688 } else { 689 lp.x = x; 690 lp.y = y; 691 lp.width = width; 692 lp.height = height; 693 } 694 if (getParent() == null) { 695 mWebView.addView(this, lp); 696 } else { 697 setLayoutParams(lp); 698 } 699 // Set up a measure spec so a layout can always be recreated. 700 mWidthSpec = MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY); 701 mHeightSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY); 702 requestFocus(); 703 } 704 705 /** 706 * Set the selection, and disable our onSelectionChanged action. 707 */ 708 /* package */ void setSelectionFromWebKit(int start, int end) { 709 if (start < 0 || end < 0) return; 710 Spannable text = (Spannable) getText(); 711 int length = text.length(); 712 if (start > length || end > length) return; 713 mFromWebKit = true; 714 Selection.setSelection(text, start, end); 715 mFromWebKit = false; 716 } 717 718 /** 719 * Set whether this is a single-line textfield or a multi-line textarea. 720 * Textfields scroll horizontally, and do not handle the enter key. 721 * Textareas behave oppositely. 722 * Do NOT call this after calling setInPassword(true). This will result in 723 * removing the password input type. 724 */ 725 public void setSingleLine(boolean single) { 726 int inputType = EditorInfo.TYPE_CLASS_TEXT 727 | EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT; 728 if (single) { 729 int action = mWebView.nativeTextFieldAction(); 730 switch (action) { 731 // Keep in sync with CachedRoot::ImeAction 732 case 0: // NEXT 733 setImeOptions(EditorInfo.IME_ACTION_NEXT); 734 break; 735 case 1: // GO 736 setImeOptions(EditorInfo.IME_ACTION_GO); 737 break; 738 case -1: // FAILURE 739 case 2: // DONE 740 setImeOptions(EditorInfo.IME_ACTION_DONE); 741 break; 742 } 743 } else { 744 inputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE 745 | EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES 746 | EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT; 747 setImeOptions(EditorInfo.IME_ACTION_NONE); 748 } 749 mSingle = single; 750 setHorizontallyScrolling(single); 751 setInputType(inputType); 752 } 753 754 /** 755 * Set the text for this WebTextView, and set the selection to (start, end) 756 * @param text Text to go into this WebTextView. 757 * @param start Beginning of the selection. 758 * @param end End of the selection. 759 */ 760 /* package */ void setText(CharSequence text, int start, int end) { 761 mPreChange = text.toString(); 762 setText(text); 763 Spannable span = (Spannable) getText(); 764 int length = span.length(); 765 if (end > length) { 766 end = length; 767 } 768 if (start < 0) { 769 start = 0; 770 } else if (start > length) { 771 start = length; 772 } 773 if (DebugFlags.WEB_TEXT_VIEW) { 774 Log.v(LOGTAG, "setText start=" + start 775 + " end=" + end); 776 } 777 Selection.setSelection(span, start, end); 778 } 779 780 /** 781 * Set the text to the new string, but use the old selection, making sure 782 * to keep it within the new string. 783 * @param text The new text to place in the textfield. 784 */ 785 /* package */ void setTextAndKeepSelection(String text) { 786 mPreChange = text.toString(); 787 Editable edit = (Editable) getText(); 788 edit.replace(0, edit.length(), text); 789 updateCachedTextfield(); 790 } 791 792 /** 793 * Update the cache to reflect the current text. 794 */ 795 /* package */ void updateCachedTextfield() { 796 mWebView.updateCachedTextfield(getText().toString()); 797 } 798} 799