RecipientEditTextView.java revision faa944cfd66fc3ebba9a3a93614e55da4a66e812
1/* 2 * Copyright (C) 2011 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 com.android.ex.chips; 18 19import android.content.Context; 20import android.graphics.Bitmap; 21import android.graphics.BitmapFactory; 22import android.graphics.Canvas; 23import android.graphics.Matrix; 24import android.graphics.Rect; 25import android.graphics.RectF; 26import android.graphics.drawable.BitmapDrawable; 27import android.graphics.drawable.Drawable; 28import android.os.Handler; 29import android.os.Message; 30import android.text.Editable; 31import android.text.Layout; 32import android.text.Spannable; 33import android.text.SpannableString; 34import android.text.Spanned; 35import android.text.TextPaint; 36import android.text.TextUtils; 37import android.text.TextWatcher; 38import android.text.method.QwertyKeyListener; 39import android.text.style.ImageSpan; 40import android.util.AttributeSet; 41import android.util.Log; 42import android.view.ActionMode; 43import android.view.KeyEvent; 44import android.view.Menu; 45import android.view.MenuItem; 46import android.view.MotionEvent; 47import android.view.View; 48import android.view.ActionMode.Callback; 49import android.widget.AdapterView; 50import android.widget.AdapterView.OnItemClickListener; 51import android.widget.Filter; 52import android.widget.Filterable; 53import android.widget.ListAdapter; 54import android.widget.ListPopupWindow; 55import android.widget.ListView; 56import android.widget.MultiAutoCompleteTextView; 57 58import java.util.Collection; 59import java.util.HashSet; 60import java.util.Set; 61 62import java.util.ArrayList; 63 64/** 65 * RecipientEditTextView is an auto complete text view for use with applications 66 * that use the new Chips UI for addressing a message to recipients. 67 */ 68public class RecipientEditTextView extends MultiAutoCompleteTextView implements 69 OnItemClickListener, Callback, RecipientAlternatesAdapter.OnCheckedItemChangedListener { 70 71 private static final String TAG = "RecipientEditTextView"; 72 73 // TODO: get correct number/ algorithm from with UX. 74 private static final int CHIP_LIMIT = 2; 75 76 private static final int INVALID_CONTACT = -1; 77 78 // TODO: get correct size from UX. 79 private static final float MORE_WIDTH_FACTOR = 0.25f; 80 81 private Drawable mChipBackground = null; 82 83 private Drawable mChipDelete = null; 84 85 private int mChipPadding; 86 87 private Tokenizer mTokenizer; 88 89 private Drawable mChipBackgroundPressed; 90 91 private RecipientChip mSelectedChip; 92 93 private int mAlternatesLayout; 94 95 private Bitmap mDefaultContactPhoto; 96 97 private ImageSpan mMoreChip; 98 99 private int mMoreString; 100 101 private ArrayList<RecipientChip> mRemovedSpans; 102 103 private float mChipHeight; 104 105 private float mChipFontSize; 106 107 private Validator mValidator; 108 109 private Drawable mInvalidChipBackground; 110 111 private Handler mHandler; 112 113 private static int DISMISS = "dismiss".hashCode(); 114 115 private static final long DISMISS_DELAY = 300; 116 117 private int mPendingChipsCount = 0; 118 119 private static int sSelectedTextColor = -1; 120 121 private static final char COMMIT_CHAR_COMMA = ','; 122 123 private static final char COMMIT_CHAR_SEMICOLON = ';'; 124 125 // TODO: do not run on appeneded recipients. 126 //private static final char COMMIT_CHAR_SPACE = ' '; 127 128 private ListPopupWindow mAlternatesPopup; 129 130 /** 131 * Used with {@link mAlternatesPopup}. Handles clicks to alternate addresses for a selected chip. 132 */ 133 private OnItemClickListener mAlternatesListener; 134 135 private int mCheckedItem; 136 137 public RecipientEditTextView(Context context, AttributeSet attrs) { 138 super(context, attrs); 139 if (sSelectedTextColor == -1) { 140 sSelectedTextColor = context.getResources().getColor(android.R.color.white); 141 } 142 mAlternatesPopup = new ListPopupWindow(context); 143 mAlternatesListener = new OnItemClickListener() { 144 @Override 145 public void onItemClick(AdapterView<?> adapterView,View view, int position, 146 long rowId) { 147 replaceChip(mSelectedChip, ((RecipientAlternatesAdapter) adapterView.getAdapter()) 148 .getRecipientEntry(position)); 149 Message delayed = Message.obtain(mHandler, DISMISS); 150 delayed.obj = RecipientEditTextView.this.mAlternatesPopup; 151 mHandler.sendMessageDelayed(delayed, DISMISS_DELAY); 152 clearComposingText(); 153 } 154 }; 155 setSuggestionsEnabled(false); 156 setOnItemClickListener(this); 157 setCustomSelectionActionModeCallback(this); 158 // When the user starts typing, make sure we unselect any selected 159 // chips. 160 addTextChangedListener(new TextWatcher() { 161 @Override 162 public void afterTextChanged(Editable s) { 163 if (mSelectedChip != null) { 164 setCursorVisible(true); 165 setSelection(getText().length()); 166 clearSelectedChip(); 167 } 168 } 169 170 @Override 171 public void onTextChanged(CharSequence s, int start, int before, int count) { 172 int length = s.length(); 173 // Make sure there is content there to parse and that it is not 174 // just the commit character. 175 if (length > 1) { 176 char last = s.charAt(length() - 1); 177 if (last == COMMIT_CHAR_SEMICOLON || last == COMMIT_CHAR_COMMA) { 178 commitDefault(); 179 } 180 // TODO: make sure this only runs AFTER appended recipients 181 // are handled. 182 /*else if (last == COMMIT_CHAR_SPACE) { 183 // Check if this is a valid email address. If it is, commit it. 184 String text = getText().toString(); 185 int tokenStart = mTokenizer.findTokenStart(text, start); 186 String sub = text.substring(tokenStart, start); 187 if (mValidator != null && mValidator.isValid(sub)) { 188 commitDefault(); 189 } 190 }*/ 191 } 192 } 193 194 @Override 195 public void beforeTextChanged(CharSequence s, int start, int count, int after) { 196 // Do nothing. 197 } 198 }); 199 mHandler = new Handler() { 200 @Override 201 public void handleMessage(Message msg) { 202 if (msg.what == DISMISS) { 203 ((ListPopupWindow) msg.obj).dismiss(); 204 return; 205 } 206 super.handleMessage(msg); 207 } 208 }; 209 } 210 211 @Override 212 public <T extends ListAdapter & Filterable> void setAdapter(T adapter) { 213 super.setAdapter(adapter); 214 if (adapter == null) { 215 return; 216 } 217 // Start the filtering process as soon as possible. This will 218 // cause any needed services to be started and make the first filter 219 // query come back more quickly. 220 Filter f = ((Filterable) adapter).getFilter(); 221 f.filter(null); 222 } 223 224 @Override 225 public void onSelectionChanged(int start, int end) { 226 // When selection changes, see if it is inside the chips area. 227 // If so, move the cursor back after the chips again. 228 Spannable span = getSpannable(); 229 int textLength = getText().length(); 230 RecipientChip[] chips = span.getSpans(start, textLength, RecipientChip.class); 231 if (chips != null && chips.length > 0) { 232 if (chips != null && chips.length > 0) { 233 // Grab the last chip and set the cursor to after it. 234 setSelection(Math.min(span.getSpanEnd(chips[chips.length - 1]) + 1, textLength)); 235 } 236 } 237 super.onSelectionChanged(start, end); 238 } 239 240 /** 241 * Convenience method: Append the specified text slice to the TextView's 242 * display buffer, upgrading it to BufferType.EDITABLE if it was 243 * not already editable. Commas are excluded as they are added automatically 244 * by the view. 245 */ 246 @Override 247 public void append(CharSequence text, int start, int end) { 248 super.append(text, start, end); 249 if (!TextUtils.isEmpty(text) && TextUtils.getTrimmedLength(text) > 0) { 250 final String displayString = (String) text; 251 int seperatorPos = displayString.indexOf(COMMIT_CHAR_COMMA); 252 if (seperatorPos != 0 && !TextUtils.isEmpty(displayString) 253 && TextUtils.getTrimmedLength(displayString) > 0) { 254 mPendingChipsCount++; 255 } 256 } 257 } 258 259 @Override 260 public void onFocusChanged(boolean hasFocus, int direction, Rect previous) { 261 if (!hasFocus) { 262 shrink(); 263 // Reset any pending chips as they would have been handled 264 // when the field lost focus. 265 mPendingChipsCount = 0; 266 } else { 267 expand(); 268 } 269 super.onFocusChanged(hasFocus, direction, previous); 270 } 271 272 private void shrink() { 273 if (mSelectedChip != null) { 274 clearSelectedChip(); 275 } else { 276 commitDefault(); 277 } 278 mMoreChip = createMoreChip(); 279 } 280 281 private void expand() { 282 removeMoreChip(); 283 setCursorVisible(true); 284 Editable text = getText(); 285 setSelection(text != null && text.length() > 0 ? text.length() : 0); 286 } 287 288 private CharSequence ellipsizeText(CharSequence text, TextPaint paint, float maxWidth) { 289 paint.setTextSize(mChipFontSize); 290 if (maxWidth <= 0 && Log.isLoggable(TAG, Log.DEBUG)) { 291 Log.d(TAG, "Max width is negative: " + maxWidth); 292 } 293 return TextUtils.ellipsize(text, paint, maxWidth, 294 TextUtils.TruncateAt.END); 295 } 296 297 private Bitmap createSelectedChip(RecipientEntry contact, TextPaint paint, Layout layout) { 298 // Ellipsize the text so that it takes AT MOST the entire width of the 299 // autocomplete text entry area. Make sure to leave space for padding 300 // on the sides. 301 int height = (int) mChipHeight; 302 int deleteWidth = height; 303 CharSequence ellipsizedText = ellipsizeText(contact.getDisplayName(), paint, 304 calculateAvailableWidth(true) - deleteWidth); 305 306 // Make sure there is a minimum chip width so the user can ALWAYS 307 // tap a chip without difficulty. 308 int width = Math.max(deleteWidth * 2, (int) Math.floor(paint.measureText(ellipsizedText, 0, 309 ellipsizedText.length())) 310 + (mChipPadding * 2) + deleteWidth); 311 312 // Create the background of the chip. 313 Bitmap tmpBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); 314 Canvas canvas = new Canvas(tmpBitmap); 315 if (mChipBackgroundPressed != null) { 316 mChipBackgroundPressed.setBounds(0, 0, width, height); 317 mChipBackgroundPressed.draw(canvas); 318 paint.setColor(sSelectedTextColor); 319 // Align the display text with where the user enters text. 320 canvas.drawText(ellipsizedText, 0, ellipsizedText.length(), mChipPadding, height 321 - Math.abs(height - mChipFontSize)/2, paint); 322 // Make the delete a square. 323 mChipDelete.setBounds(width - deleteWidth, 0, width, height); 324 mChipDelete.draw(canvas); 325 } else { 326 Log.w(TAG, "Unable to draw a background for the chips as it was never set"); 327 } 328 return tmpBitmap; 329 } 330 331 332 /** 333 * Get the background drawable for a RecipientChip. 334 */ 335 public Drawable getChipBackground(RecipientEntry contact) { 336 return mValidator != null && mValidator.isValid(contact.getDestination()) ? 337 mChipBackground : mInvalidChipBackground; 338 } 339 340 private Bitmap createUnselectedChip(RecipientEntry contact, TextPaint paint, Layout layout) { 341 // Ellipsize the text so that it takes AT MOST the entire width of the 342 // autocomplete text entry area. Make sure to leave space for padding 343 // on the sides. 344 int height = (int) mChipHeight; 345 int iconWidth = height; 346 CharSequence ellipsizedText = ellipsizeText(contact.getDisplayName(), paint, 347 calculateAvailableWidth(false) - iconWidth); 348 // Make sure there is a minimum chip width so the user can ALWAYS 349 // tap a chip without difficulty. 350 int width = Math.max(iconWidth * 2, (int) Math.floor(paint.measureText(ellipsizedText, 0, 351 ellipsizedText.length())) 352 + (mChipPadding * 2) + iconWidth); 353 354 // Create the background of the chip. 355 Bitmap tmpBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); 356 Canvas canvas = new Canvas(tmpBitmap); 357 Drawable background = getChipBackground(contact); 358 if (background != null) { 359 background.setBounds(0, 0, width, height); 360 background.draw(canvas); 361 362 // Don't draw photos for recipients that have been typed in. 363 if (contact.getContactId() != INVALID_CONTACT) { 364 byte[] photoBytes = contact.getPhotoBytes(); 365 // There may not be a photo yet if anything but the first contact address 366 // was selected. 367 if (photoBytes == null && contact.getPhotoThumbnailUri() != null) { 368 // TODO: cache this in the recipient entry? 369 ((BaseRecipientAdapter) getAdapter()).fetchPhoto(contact, contact 370 .getPhotoThumbnailUri()); 371 photoBytes = contact.getPhotoBytes(); 372 } 373 374 Bitmap photo; 375 if (photoBytes != null) { 376 photo = BitmapFactory.decodeByteArray(photoBytes, 0, photoBytes.length); 377 } else { 378 // TODO: can the scaled down default photo be cached? 379 photo = mDefaultContactPhoto; 380 } 381 // Draw the photo on the left side. 382 Matrix matrix = new Matrix(); 383 RectF src = new RectF(0, 0, photo.getWidth(), photo.getHeight()); 384 RectF dst = new RectF(0, 0, iconWidth, height); 385 matrix.setRectToRect(src, dst, Matrix.ScaleToFit.CENTER); 386 canvas.drawBitmap(photo, matrix, paint); 387 } else { 388 // Don't leave any space for the icon. It isn't being drawn. 389 iconWidth = 0; 390 } 391 392 // Align the display text with where the user enters text. 393 canvas.drawText(ellipsizedText, 0, ellipsizedText.length(), mChipPadding + iconWidth, 394 height - Math.abs(height - mChipFontSize) / 2, paint); 395 } else { 396 Log.w(TAG, "Unable to draw a background for the chips as it was never set"); 397 } 398 return tmpBitmap; 399 } 400 401 public RecipientChip constructChipSpan(RecipientEntry contact, int offset, boolean pressed) 402 throws NullPointerException { 403 if (mChipBackground == null) { 404 throw new NullPointerException( 405 "Unable to render any chips as setChipDimensions was not called."); 406 } 407 Layout layout = getLayout(); 408 409 TextPaint paint = getPaint(); 410 float defaultSize = paint.getTextSize(); 411 int defaultColor = paint.getColor(); 412 413 Bitmap tmpBitmap; 414 if (pressed) { 415 tmpBitmap = createSelectedChip(contact, paint, layout); 416 417 } else { 418 tmpBitmap = createUnselectedChip(contact, paint, layout); 419 } 420 421 // Pass the full text, un-ellipsized, to the chip. 422 Drawable result = new BitmapDrawable(getResources(), tmpBitmap); 423 result.setBounds(0, 0, tmpBitmap.getWidth(), tmpBitmap.getHeight()); 424 RecipientChip recipientChip = new RecipientChip(result, contact, offset); 425 // Return text to the original size. 426 paint.setTextSize(defaultSize); 427 paint.setColor(defaultColor); 428 return recipientChip; 429 } 430 431 /** 432 * Calculate the bottom of the line the chip will be located on using: 433 * 1) which line the chip appears on 434 * 2) the height of a chip 435 * 3) padding built into the edit text view 436 * 4) the position of the autocomplete view on the screen, taking into account 437 * that any top padding will move this down visually 438 */ 439 private int calculateLineBottom(int yOffset, int line, int chipHeight) { 440 // Line offsets start at zero. 441 int actualLine = line + 1; 442 return yOffset + (actualLine * (chipHeight + getPaddingBottom())) + getPaddingTop(); 443 } 444 445 /** 446 * Get the max amount of space a chip can take up. The formula takes into 447 * account the width of the EditTextView, any view padding, and padding 448 * that will be added to the chip. 449 */ 450 private float calculateAvailableWidth(boolean pressed) { 451 return getWidth() - getPaddingLeft() - getPaddingRight() - (mChipPadding * 2); 452 } 453 454 /** 455 * Set all chip dimensions and resources. This has to be done from the 456 * application as this is a static library. 457 * @param chipBackground 458 * @param chipBackgroundPressed 459 * @param invalidChip 460 * @param chipDelete 461 * @param defaultContact 462 * @param moreResource 463 * @param alternatesLayout 464 * @param chipHeight 465 * @param padding Padding around the text in a chip 466 */ 467 public void setChipDimensions(Drawable chipBackground, Drawable chipBackgroundPressed, 468 Drawable invalidChip, Drawable chipDelete, Bitmap defaultContact, int moreResource, 469 int alternatesLayout, float chipHeight, float padding, 470 float chipFontSize) { 471 mChipBackground = chipBackground; 472 mChipBackgroundPressed = chipBackgroundPressed; 473 mChipDelete = chipDelete; 474 mChipPadding = (int) padding; 475 mAlternatesLayout = alternatesLayout; 476 mDefaultContactPhoto = defaultContact; 477 mMoreString = moreResource; 478 mChipHeight = chipHeight; 479 mChipFontSize = chipFontSize; 480 mInvalidChipBackground = invalidChip; 481 } 482 483 @Override 484 public void onSizeChanged(int width, int height, int oldw, int oldh) { 485 super.onSizeChanged(width, height, oldw, oldh); 486 // Check for any pending tokens created before layout had been completed 487 // on the view. 488 if (width != 0 && height != 0 && mPendingChipsCount > 0) { 489 Editable editable = getText(); 490 // Tokenize! 491 int startingPos = 0; 492 while (startingPos < editable.length() && mPendingChipsCount > 0) { 493 int tokenEnd = mTokenizer.findTokenEnd(editable, startingPos); 494 int tokenStart = mTokenizer.findTokenStart(editable, tokenEnd); 495 if (findChip(tokenStart) == null) { 496 // Always include seperators with the token to the left. 497 if (tokenEnd < editable.length() - 1 498 && editable.charAt(tokenEnd) == COMMIT_CHAR_COMMA) { 499 tokenEnd++; 500 } 501 startingPos = tokenEnd; 502 String token = editable.toString().substring(tokenStart, tokenEnd); 503 int seperatorPos = token.indexOf(COMMIT_CHAR_COMMA); 504 if (seperatorPos != -1) { 505 token = token.substring(0, seperatorPos); 506 } 507 editable.replace(tokenStart, tokenEnd, createChip(RecipientEntry 508 .constructFakeEntry(token), false)); 509 } 510 mPendingChipsCount--; 511 } 512 mPendingChipsCount = 0; 513 } 514 } 515 516 @Override 517 public void setTokenizer(Tokenizer tokenizer) { 518 mTokenizer = tokenizer; 519 super.setTokenizer(mTokenizer); 520 } 521 522 @Override 523 public void setValidator(Validator validator) { 524 mValidator = validator; 525 super.setValidator(validator); 526 } 527 528 /** 529 * We cannot use the default mechanism for replaceText. Instead, 530 * we override onItemClickListener so we can get all the associated 531 * contact information including display text, address, and id. 532 */ 533 @Override 534 protected void replaceText(CharSequence text) { 535 return; 536 } 537 538 /** 539 * Dismiss any selected chips when the back key is pressed. 540 */ 541 @Override 542 public boolean onKeyPreIme(int keyCode, KeyEvent event) { 543 if (keyCode == KeyEvent.KEYCODE_BACK) { 544 clearSelectedChip(); 545 } 546 return super.onKeyPreIme(keyCode, event); 547 } 548 549 /** 550 * Monitor key presses in this view to see if the user types 551 * any commit keys, which consist of ENTER, TAB, or DPAD_CENTER. 552 * If the user has entered text that has contact matches and types 553 * a commit key, create a chip from the topmost matching contact. 554 * If the user has entered text that has no contact matches and types 555 * a commit key, then create a chip from the text they have entered. 556 */ 557 @Override 558 public boolean onKeyUp(int keyCode, KeyEvent event) { 559 switch (keyCode) { 560 case KeyEvent.KEYCODE_ENTER: 561 case KeyEvent.KEYCODE_DPAD_CENTER: 562 if (event.hasNoModifiers()) { 563 if (commitDefault()) { 564 return true; 565 } 566 if (mSelectedChip != null) { 567 clearSelectedChip(); 568 return true; 569 } else if (focusNext()) { 570 return true; 571 } 572 } 573 break; 574 case KeyEvent.KEYCODE_TAB: 575 if (event.hasNoModifiers()) { 576 if (mSelectedChip != null) { 577 clearSelectedChip(); 578 } else { 579 commitDefault(); 580 } 581 if (focusNext()) { 582 return true; 583 } 584 } 585 } 586 return super.onKeyUp(keyCode, event); 587 } 588 589 private boolean focusNext() { 590 View next = focusSearch(View.FOCUS_DOWN); 591 if (next != null) { 592 next.requestFocus(); 593 return true; 594 } 595 return false; 596 } 597 598 /** 599 * Create a chip from the default selection. If the popup is showing, the 600 * default is the first item in the popup suggestions list. Otherwise, it is 601 * whatever the user had typed in. End represents where the the tokenizer 602 * should search for a token to turn into a chip. 603 * @return If a chip was created from a real contact. 604 */ 605 private boolean commitDefault() { 606 Editable editable = getText(); 607 boolean enough = enoughToFilter(); 608 boolean shouldSubmitAtPosition = false; 609 int end = getSelectionEnd(); 610 int start = mTokenizer.findTokenStart(editable, end); 611 612 if (enough) { 613 RecipientChip[] chips = getSpannable().getSpans(start, end, RecipientChip.class); 614 if ((chips == null || chips.length == 0)) { 615 // There's something being filtered or typed that has not been 616 // completed yet. 617 // Check for the end of the token. 618 end = mTokenizer.findTokenEnd(editable, start); 619 // The user has tapped somewhere in the middle of the text 620 // and started editing. In this case, we always want to 621 // submit the full text token and not what may be in the 622 // suggestions popup. 623 if (end != getSelectionEnd()) { 624 setSelection(end); 625 } 626 shouldSubmitAtPosition = true; 627 } 628 } 629 630 if (shouldSubmitAtPosition) { 631 if (getAdapter().getCount() > 0) { 632 // choose the first entry. 633 submitItemAtPosition(0); 634 dismissDropDown(); 635 return true; 636 } else { 637 String text = editable.toString().substring(start, end); 638 clearComposingText(); 639 if (text != null && text.length() > 0 && !text.equals(" ")) { 640 text = removeCommitChars(text); 641 RecipientEntry entry = RecipientEntry.constructFakeEntry(text); 642 QwertyKeyListener.markAsReplaced(editable, start, end, ""); 643 editable.replace(start, end, createChip(entry, false)); 644 dismissDropDown(); 645 } 646 return true; 647 } 648 } 649 return false; 650 } 651 652 private String removeCommitChars(String text) { 653 int commitCharPosition = text.indexOf(COMMIT_CHAR_COMMA); 654 if (commitCharPosition != -1) { 655 text = text.substring(0, commitCharPosition); 656 } 657 commitCharPosition = text.indexOf(COMMIT_CHAR_SEMICOLON); 658 if (commitCharPosition != -1) { 659 text = text.substring(0, commitCharPosition); 660 } 661 // TODO: make sure this only runs AFTER appended recipients 662 // are handled. 663 /*commitCharPosition = text.indexOf(COMMIT_CHAR_SPACE); 664 if (commitCharPosition != -1 && commitCharPosition != 0) { 665 text = text.substring(0, commitCharPosition); 666 }*/ 667 return text; 668 } 669 670 /** 671 * If there is a selected chip, delegate the key events 672 * to the selected chip. 673 */ 674 @Override 675 public boolean onKeyDown(int keyCode, KeyEvent event) { 676 if (mSelectedChip != null && keyCode == KeyEvent.KEYCODE_DEL) { 677 if (mAlternatesPopup != null && mAlternatesPopup.isShowing()) { 678 mAlternatesPopup.dismiss(); 679 } 680 removeChip(mSelectedChip); 681 } 682 683 if (keyCode == KeyEvent.KEYCODE_ENTER && event.hasNoModifiers()) { 684 return true; 685 } 686 687 return super.onKeyDown(keyCode, event); 688 } 689 690 private Spannable getSpannable() { 691 return getText(); 692 } 693 694 private int getChipStart(RecipientChip chip) { 695 return getSpannable().getSpanStart(chip); 696 } 697 698 private int getChipEnd(RecipientChip chip) { 699 return getSpannable().getSpanEnd(chip); 700 } 701 702 /** 703 * Instead of filtering on the entire contents of the edit box, 704 * this subclass method filters on the range from 705 * {@link Tokenizer#findTokenStart} to {@link #getSelectionEnd} 706 * if the length of that range meets or exceeds {@link #getThreshold} 707 * and makes sure that the range is not already a Chip. 708 */ 709 @Override 710 protected void performFiltering(CharSequence text, int keyCode) { 711 if (enoughToFilter()) { 712 int end = getSelectionEnd(); 713 int start = mTokenizer.findTokenStart(text, end); 714 // If this is a RecipientChip, don't filter 715 // on its contents. 716 Spannable span = getSpannable(); 717 RecipientChip[] chips = span.getSpans(start, end, RecipientChip.class); 718 if (chips != null && chips.length > 0) { 719 return; 720 } 721 } 722 super.performFiltering(text, keyCode); 723 } 724 725 private void clearSelectedChip() { 726 if (mSelectedChip != null) { 727 unselectChip(mSelectedChip); 728 mSelectedChip = null; 729 } 730 setCursorVisible(true); 731 } 732 733 /** 734 * Monitor touch events in the RecipientEditTextView. 735 * If the view does not have focus, any tap on the view 736 * will just focus the view. If the view has focus, determine 737 * if the touch target is a recipient chip. If it is and the chip 738 * is not selected, select it and clear any other selected chips. 739 * If it isn't, then select that chip. 740 */ 741 @Override 742 public boolean onTouchEvent(MotionEvent event) { 743 if (!isFocused()) { 744 // Ignore any chip taps until this view is focused. 745 return super.onTouchEvent(event); 746 } 747 748 boolean handled = super.onTouchEvent(event); 749 int action = event.getAction(); 750 boolean chipWasSelected = false; 751 752 if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) { 753 float x = event.getX(); 754 float y = event.getY(); 755 int offset = putOffsetInRange(getOffsetForPosition(x, y)); 756 RecipientChip currentChip = findChip(offset); 757 if (currentChip != null) { 758 if (action == MotionEvent.ACTION_UP) { 759 if (mSelectedChip != null && mSelectedChip != currentChip) { 760 clearSelectedChip(); 761 mSelectedChip = selectChip(currentChip); 762 } else if (mSelectedChip == null) { 763 // Selection may have moved due to the tap event, 764 // but make sure we correctly reset selection to the 765 // end so that any unfinished chips are committed. 766 setSelection(getText().length()); 767 commitDefault(); 768 mSelectedChip = selectChip(currentChip); 769 } else { 770 onClick(mSelectedChip, offset, x, y); 771 } 772 } 773 chipWasSelected = true; 774 } 775 } 776 if (action == MotionEvent.ACTION_UP && !chipWasSelected) { 777 clearSelectedChip(); 778 } 779 return handled; 780 } 781 782 private void showAlternates(RecipientChip currentChip, ListPopupWindow alternatesPopup, 783 int width, Context context) { 784 int line = getLayout().getLineForOffset(getChipStart(currentChip)); 785 int[] xy = getLocationOnScreen(); 786 int bottom = calculateLineBottom(xy[1], line, (int) mChipHeight); 787 View anchorView = new View(context); 788 anchorView.setBottom(bottom); 789 anchorView.setTop(bottom); 790 anchorView.setLeft(xy[0]); 791 anchorView.setRight(xy[0]); 792 // Align the alternates popup with the left side of the View, 793 // regardless of the position of the chip tapped. 794 alternatesPopup.setWidth(width); 795 alternatesPopup.setAnchorView(anchorView); 796 alternatesPopup.setAdapter(createAlternatesAdapter(currentChip)); 797 alternatesPopup.setOnItemClickListener(mAlternatesListener); // currentChip); 798 alternatesPopup.show(); 799 ListView listView = alternatesPopup.getListView(); 800 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 801 // Checked item would be -1 if the adapter has not 802 // loaded the view that should be checked yet. The 803 // variable will be set correctly when onCheckedItemChanged 804 // is called in a separate thread. 805 if (mCheckedItem != -1) { 806 listView.setItemChecked(mCheckedItem, true); 807 mCheckedItem = -1; 808 } 809 } 810 811 private int[] getLocationOnScreen() { 812 int[] xy = new int[2]; 813 getLocationOnScreen(xy); 814 return xy; 815 } 816 817 private ListAdapter createAlternatesAdapter(RecipientChip chip) { 818 return new RecipientAlternatesAdapter(getContext(), chip.getContactId(), chip.getDataId(), 819 mAlternatesLayout, this); 820 } 821 822 public void onCheckedItemChanged(int position) { 823 ListView listView = mAlternatesPopup.getListView(); 824 if (listView != null && listView.getCheckedItemCount() == 0) { 825 listView.setItemChecked(position, true); 826 } else { 827 mCheckedItem = position; 828 } 829 } 830 831 // TODO: This algorithm will need a lot of tweaking after more people have used 832 // the chips ui. This attempts to be "forgiving" to fat finger touches by favoring 833 // what comes before the finger. 834 private int putOffsetInRange(int o) { 835 int offset = o; 836 Editable text = getText(); 837 int length = text.length(); 838 // Remove whitespace from end to find "real end" 839 int realLength = length; 840 for (int i = length - 1; i >= 0; i--) { 841 if (text.charAt(i) == ' ') { 842 realLength--; 843 } else { 844 break; 845 } 846 } 847 848 // If the offset is beyond or at the end of the text, 849 // leave it alone. 850 if (offset >= realLength) { 851 return offset; 852 } 853 Editable editable = getText(); 854 while (offset >= 0 && findText(editable, offset) == -1 && findChip(offset) == null) { 855 // Keep walking backward! 856 offset--; 857 } 858 return offset; 859 } 860 861 private int findText(Editable text, int offset) { 862 if (text.charAt(offset) != ' ') { 863 return offset; 864 } 865 return -1; 866 } 867 868 private RecipientChip findChip(int offset) { 869 RecipientChip[] chips = getSpannable().getSpans(0, getText().length(), RecipientChip.class); 870 // Find the chip that contains this offset. 871 for (int i = 0; i < chips.length; i++) { 872 RecipientChip chip = chips[i]; 873 int start = getChipStart(chip); 874 int end = getChipEnd(chip); 875 if (offset >= start && offset <= end) { 876 return chip; 877 } 878 } 879 return null; 880 } 881 882 private CharSequence createChip(RecipientEntry entry, boolean pressed) { 883 String displayText = entry.getDestination(); 884 displayText = (String) mTokenizer.terminateToken(displayText); 885 // Always leave a blank space at the end of a chip. 886 int textLength = displayText.length() - 1; 887 SpannableString chipText = new SpannableString(displayText); 888 int end = getSelectionEnd(); 889 int start = mTokenizer.findTokenStart(getText(), end); 890 try { 891 chipText.setSpan(constructChipSpan(entry, start, pressed), 0, textLength, 892 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 893 } catch (NullPointerException e) { 894 Log.e(TAG, e.getMessage(), e); 895 return null; 896 } 897 898 return chipText; 899 } 900 901 /** 902 * When an item in the suggestions list has been clicked, create a chip from the 903 * contact information of the selected item. 904 */ 905 @Override 906 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 907 submitItemAtPosition(position); 908 } 909 910 private void submitItemAtPosition(int position) { 911 RecipientEntry entry = (RecipientEntry) getAdapter().getItem(position); 912 // If the display name and the address are the same, then make this 913 // a fake recipient that is editable. 914 if (TextUtils.equals(entry.getDisplayName(), entry.getDestination())) { 915 entry = RecipientEntry.constructFakeEntry(entry.getDestination()); 916 } 917 clearComposingText(); 918 919 int end = getSelectionEnd(); 920 int start = mTokenizer.findTokenStart(getText(), end); 921 922 Editable editable = getText(); 923 QwertyKeyListener.markAsReplaced(editable, start, end, ""); 924 editable.replace(start, end, createChip(entry, false)); 925 } 926 927 /** Returns a collection of contact Id for each chip inside this View. */ 928 /* package */ Collection<Long> getContactIds() { 929 final Set<Long> result = new HashSet<Long>(); 930 RecipientChip[] chips = getRecipients(); 931 if (chips != null) { 932 for (RecipientChip chip : chips) { 933 result.add(chip.getContactId()); 934 } 935 } 936 return result; 937 } 938 939 private RecipientChip[] getRecipients() { 940 return getSpannable().getSpans(0, getText().length(), RecipientChip.class); 941 } 942 943 /** Returns a collection of data Id for each chip inside this View. May be null. */ 944 /* package */ Collection<Long> getDataIds() { 945 final Set<Long> result = new HashSet<Long>(); 946 RecipientChip [] chips = getRecipients(); 947 if (chips != null) { 948 for (RecipientChip chip : chips) { 949 result.add(chip.getDataId()); 950 } 951 } 952 return result; 953 } 954 955 956 @Override 957 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 958 return false; 959 } 960 961 @Override 962 public void onDestroyActionMode(ActionMode mode) { 963 } 964 965 @Override 966 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 967 return false; 968 } 969 970 /** 971 * No chips are selectable. 972 */ 973 @Override 974 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 975 return false; 976 } 977 978 /** 979 * Create the more chip. The more chip is text that replaces any chips that 980 * do not fit in the pre-defined available space when the 981 * RecipientEditTextView loses focus. 982 */ 983 private ImageSpan createMoreChip() { 984 RecipientChip[] recipients = getRecipients(); 985 if (recipients == null || recipients.length <= CHIP_LIMIT) { 986 return null; 987 } 988 int numRecipients = recipients.length; 989 int overage = numRecipients - CHIP_LIMIT; 990 Editable text = getText(); 991 // TODO: get the correct size from visual design. 992 int width = (int) Math.floor(getWidth() * MORE_WIDTH_FACTOR); 993 int height = getLineHeight(); 994 Bitmap drawable = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); 995 Canvas canvas = new Canvas(drawable); 996 String moreText = getResources().getString(mMoreString, overage); 997 canvas.drawText(moreText, 0, moreText.length(), 0, height - getLayout().getLineDescent(0), 998 getPaint()); 999 1000 Drawable result = new BitmapDrawable(getResources(), drawable); 1001 result.setBounds(0, 0, width, height); 1002 ImageSpan moreSpan = new ImageSpan(result); 1003 Spannable spannable = getSpannable(); 1004 // Remove the overage chips. 1005 RecipientChip[] chips = spannable.getSpans(0, text.length(), RecipientChip.class); 1006 if (chips == null || chips.length == 0) { 1007 Log.w(TAG, 1008 "We have recipients. Tt should not be possible to have zero RecipientChips."); 1009 return null; 1010 } 1011 mRemovedSpans = new ArrayList<RecipientChip>(chips.length); 1012 int totalReplaceStart = 0; 1013 int totalReplaceEnd = 0; 1014 for (int i = numRecipients - overage; i < chips.length; i++) { 1015 mRemovedSpans.add(chips[i]); 1016 if (i == numRecipients - overage) { 1017 totalReplaceStart = spannable.getSpanStart(chips[i]); 1018 } 1019 if (i == chips.length - 1) { 1020 totalReplaceEnd = spannable.getSpanEnd(chips[i]); 1021 } 1022 chips[i].storeChipStart(spannable.getSpanStart(chips[i])); 1023 chips[i].storeChipEnd(spannable.getSpanEnd(chips[i])); 1024 spannable.removeSpan(chips[i]); 1025 } 1026 SpannableString chipText = new SpannableString(text.subSequence(totalReplaceStart, 1027 totalReplaceEnd)); 1028 chipText.setSpan(moreSpan, 0, chipText.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 1029 text.replace(totalReplaceStart, totalReplaceEnd, chipText); 1030 return moreSpan; 1031 } 1032 1033 /** 1034 * Replace the more chip, if it exists, with all of the recipient chips it had 1035 * replaced when the RecipientEditTextView gains focus. 1036 */ 1037 private void removeMoreChip() { 1038 if (mMoreChip != null) { 1039 Spannable span = getSpannable(); 1040 span.removeSpan(mMoreChip); 1041 mMoreChip = null; 1042 // Re-add the spans that were removed. 1043 if (mRemovedSpans != null && mRemovedSpans.size() > 0) { 1044 // Recreate each removed span. 1045 Editable editable = getText(); 1046 SpannableString associatedText; 1047 for (RecipientChip chip : mRemovedSpans) { 1048 int chipStart = chip.getStoredChipStart(); 1049 int chipEnd = Math.min(editable.length(), chip.getStoredChipEnd()); 1050 if (Log.isLoggable(TAG, Log.DEBUG) && chipEnd != chip.getStoredChipEnd()) { 1051 Log.d(TAG, 1052 "Unexpectedly, the chip ended after the end of the editable text. " 1053 + "Chip End " + chip.getStoredChipEnd() 1054 + "Editable length " + editable.length()); 1055 } 1056 associatedText = new SpannableString(editable.subSequence(chipStart, chipEnd)); 1057 associatedText.setSpan(chip, 0, associatedText.length(), 1058 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 1059 editable.replace(chipStart, chipEnd, associatedText); 1060 } 1061 mRemovedSpans.clear(); 1062 } 1063 } 1064 } 1065 1066 /** 1067 * Show specified chip as selected. If the RecipientChip is just an email address, 1068 * selecting the chip will take the contents of the chip and place it at 1069 * the end of the RecipientEditTextView for inline editing. If the 1070 * RecipientChip is a complete contact, then selecting the chip 1071 * will change the background color of the chip, show the delete icon, 1072 * and a popup window with the address in use highlighted and any other 1073 * alternate addresses for the contact. 1074 * @param currentChip Chip to select. 1075 * @return A RecipientChip in the selected state or null if the chip 1076 * just contained an email address. 1077 */ 1078 public RecipientChip selectChip(RecipientChip currentChip) { 1079 if (currentChip.getContactId() != INVALID_CONTACT) { 1080 int start = getChipStart(currentChip); 1081 int end = getChipEnd(currentChip); 1082 getSpannable().removeSpan(currentChip); 1083 RecipientChip newChip; 1084 CharSequence displayText = mTokenizer.terminateToken(currentChip.getValue()); 1085 // Always leave a blank space at the end of a chip. 1086 int textLength = displayText.length() - 1; 1087 SpannableString chipText = new SpannableString(displayText); 1088 try { 1089 newChip = constructChipSpan(currentChip.getEntry(), start, true); 1090 chipText.setSpan(newChip, 0, textLength, 1091 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 1092 } catch (NullPointerException e) { 1093 Log.e(TAG, e.getMessage(), e); 1094 return null; 1095 } 1096 Editable editable = getText(); 1097 QwertyKeyListener.markAsReplaced(editable, start, end, ""); 1098 if (start == -1 || end == -1) { 1099 Log.d(TAG, "The chip being selected no longer exists but should."); 1100 } else { 1101 editable.replace(start, end, chipText); 1102 } 1103 newChip.setSelected(true); 1104 showAlternates(newChip, mAlternatesPopup, getWidth(), getContext()); 1105 setCursorVisible(false); 1106 return newChip; 1107 } else { 1108 CharSequence text = currentChip.getValue(); 1109 Editable editable = getText(); 1110 removeChip(currentChip); 1111 editable.append(text); 1112 setCursorVisible(true); 1113 setSelection(editable.length()); 1114 return null; 1115 } 1116 } 1117 1118 1119 /** 1120 * Remove selection from this chip. Unselecting a RecipientChip will render 1121 * the chip without a delete icon and with an unfocused background. This 1122 * is called when the RecipientChip no longer has focus. 1123 */ 1124 public void unselectChip(RecipientChip chip) { 1125 int start = getChipStart(chip); 1126 int end = getChipEnd(chip); 1127 Editable editable = getText(); 1128 if (start == -1 || end == -1) { 1129 Log.e(TAG, "The chip being unselected no longer exists but should."); 1130 } else { 1131 getSpannable().removeSpan(this); 1132 QwertyKeyListener.markAsReplaced(editable, start, end, ""); 1133 editable.replace(start, end, createChip(chip.getEntry(), false)); 1134 } 1135 mSelectedChip = null; 1136 clearSelectedChip(); 1137 setCursorVisible(true); 1138 setSelection(editable.length()); 1139 if (mAlternatesPopup != null && mAlternatesPopup.isShowing()) { 1140 mAlternatesPopup.dismiss(); 1141 } 1142 } 1143 1144 1145 /** 1146 * Return whether this chip contains the position passed in. 1147 */ 1148 public boolean matchesChip(RecipientChip chip, int offset) { 1149 int start = getChipStart(chip); 1150 int end = getChipEnd(chip); 1151 if (start == -1 || end == -1) { 1152 return false; 1153 } 1154 return (offset >= start && offset <= end); 1155 } 1156 1157 1158 /** 1159 * Return whether a touch event was inside the delete target of 1160 * a selected chip. It is in the delete target if: 1161 * 1) the x and y points of the event are within the 1162 * delete assset. 1163 * 2) the point tapped would have caused a cursor to appear 1164 * right after the selected chip. 1165 * @return boolean 1166 */ 1167 private boolean isInDelete(RecipientChip chip, int offset, float x, float y) { 1168 // Figure out the bounds of this chip and whether or not 1169 // the user clicked in the X portion. 1170 return chip.isSelected() && offset == getChipEnd(chip); 1171 } 1172 1173 /** 1174 * Remove the chip and any text associated with it from the RecipientEditTextView. 1175 */ 1176 private void removeChip(RecipientChip chip) { 1177 Spannable spannable = getSpannable(); 1178 int spanStart = spannable.getSpanStart(chip); 1179 int spanEnd = spannable.getSpanEnd(chip); 1180 Editable text = getText(); 1181 int toDelete = spanEnd; 1182 boolean wasSelected = chip == mSelectedChip; 1183 // Clear that there is a selected chip before updating any text. 1184 if (wasSelected) { 1185 mSelectedChip = null; 1186 } 1187 // Always remove trailing spaces when removing a chip. 1188 while (toDelete >= 0 && toDelete < text.length() - 1 && text.charAt(toDelete) == ' ') { 1189 toDelete++; 1190 } 1191 spannable.removeSpan(chip); 1192 text.delete(spanStart, toDelete); 1193 if (wasSelected) { 1194 clearSelectedChip(); 1195 } 1196 } 1197 1198 /** 1199 * Replace this currently selected chip with a new chip 1200 * that uses the contact data provided. 1201 */ 1202 public void replaceChip(RecipientChip chip, RecipientEntry entry) { 1203 boolean wasSelected = chip == mSelectedChip; 1204 if (wasSelected) { 1205 mSelectedChip = null; 1206 } 1207 int start = getChipStart(chip); 1208 int end = getChipEnd(chip); 1209 getSpannable().removeSpan(chip); 1210 Editable editable = getText(); 1211 CharSequence chipText = createChip(entry, false); 1212 if (start == -1 || end == -1) { 1213 Log.e(TAG, "The chip to replace does not exist but should."); 1214 editable.insert(0, chipText); 1215 } else { 1216 editable.replace(start, end, chipText); 1217 } 1218 setCursorVisible(true); 1219 if (wasSelected) { 1220 clearSelectedChip(); 1221 } 1222 } 1223 1224 /** 1225 * Handle click events for a chip. When a selected chip receives a click 1226 * event, see if that event was in the delete icon. If so, delete it. 1227 * Otherwise, unselect the chip. 1228 */ 1229 public void onClick(RecipientChip chip, int offset, float x, float y) { 1230 if (chip.isSelected()) { 1231 if (isInDelete(chip, offset, x, y)) { 1232 removeChip(chip); 1233 } else { 1234 clearSelectedChip(); 1235 } 1236 } 1237 } 1238 1239 1240} 1241