1 /* 2 * Copyright (C) 2008 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 17 package com.android.launcher3.folder; 18 19 import android.animation.Animator; 20 import android.animation.AnimatorListenerAdapter; 21 import android.animation.AnimatorSet; 22 import android.animation.ObjectAnimator; 23 import android.animation.PropertyValuesHolder; 24 import android.annotation.SuppressLint; 25 import android.content.Context; 26 import android.content.res.Resources; 27 import android.graphics.Rect; 28 import android.text.InputType; 29 import android.text.Selection; 30 import android.util.AttributeSet; 31 import android.util.Log; 32 import android.view.ActionMode; 33 import android.view.FocusFinder; 34 import android.view.KeyEvent; 35 import android.view.Menu; 36 import android.view.MenuItem; 37 import android.view.MotionEvent; 38 import android.view.View; 39 import android.view.ViewDebug; 40 import android.view.accessibility.AccessibilityEvent; 41 import android.view.animation.AccelerateInterpolator; 42 import android.view.animation.AnimationUtils; 43 import android.view.inputmethod.EditorInfo; 44 import android.widget.TextView; 45 46 import com.android.launcher3.AbstractFloatingView; 47 import com.android.launcher3.Alarm; 48 import com.android.launcher3.AppInfo; 49 import com.android.launcher3.CellLayout; 50 import com.android.launcher3.DeviceProfile; 51 import com.android.launcher3.DragSource; 52 import com.android.launcher3.DropTarget; 53 import com.android.launcher3.ExtendedEditText; 54 import com.android.launcher3.FolderInfo; 55 import com.android.launcher3.FolderInfo.FolderListener; 56 import com.android.launcher3.ItemInfo; 57 import com.android.launcher3.Launcher; 58 import com.android.launcher3.LauncherAnimUtils; 59 import com.android.launcher3.LauncherSettings; 60 import com.android.launcher3.LogDecelerateInterpolator; 61 import com.android.launcher3.OnAlarmListener; 62 import com.android.launcher3.PagedView; 63 import com.android.launcher3.R; 64 import com.android.launcher3.ShortcutInfo; 65 import com.android.launcher3.UninstallDropTarget.DropTargetSource; 66 import com.android.launcher3.Utilities; 67 import com.android.launcher3.Workspace.ItemOperator; 68 import com.android.launcher3.accessibility.AccessibleDragListenerAdapter; 69 import com.android.launcher3.config.FeatureFlags; 70 import com.android.launcher3.config.ProviderConfig; 71 import com.android.launcher3.dragndrop.DragController; 72 import com.android.launcher3.dragndrop.DragController.DragListener; 73 import com.android.launcher3.dragndrop.DragLayer; 74 import com.android.launcher3.dragndrop.DragOptions; 75 import com.android.launcher3.pageindicators.PageIndicatorDots; 76 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType; 77 import com.android.launcher3.userevent.nano.LauncherLogProto.Target; 78 import com.android.launcher3.util.CircleRevealOutlineProvider; 79 import com.android.launcher3.util.Thunk; 80 81 import java.util.ArrayList; 82 import java.util.Collections; 83 import java.util.Comparator; 84 85 /** 86 * Represents a set of icons chosen by the user or generated by the system. 87 */ 88 public class Folder extends AbstractFloatingView implements DragSource, View.OnClickListener, 89 View.OnLongClickListener, DropTarget, FolderListener, TextView.OnEditorActionListener, 90 View.OnFocusChangeListener, DragListener, DropTargetSource, 91 ExtendedEditText.OnBackKeyListener { 92 private static final String TAG = "Launcher.Folder"; 93 94 /** 95 * We avoid measuring {@link #mContent} with a 0 width or height, as this 96 * results in CellLayout being measured as UNSPECIFIED, which it does not support. 97 */ 98 private static final int MIN_CONTENT_DIMEN = 5; 99 100 static final int STATE_NONE = -1; 101 static final int STATE_SMALL = 0; 102 static final int STATE_ANIMATING = 1; 103 static final int STATE_OPEN = 2; 104 105 /** 106 * Time for which the scroll hint is shown before automatically changing page. 107 */ 108 public static final int SCROLL_HINT_DURATION = 500; 109 public static final int RESCROLL_DELAY = PagedView.PAGE_SNAP_ANIMATION_DURATION + 150; 110 111 public static final int SCROLL_NONE = -1; 112 public static final int SCROLL_LEFT = 0; 113 public static final int SCROLL_RIGHT = 1; 114 115 /** 116 * Fraction of icon width which behave as scroll region. 117 */ 118 private static final float ICON_OVERSCROLL_WIDTH_FACTOR = 0.45f; 119 120 private static final int FOLDER_NAME_ANIMATION_DURATION = 633; 121 122 private static final int REORDER_DELAY = 250; 123 private static final int ON_EXIT_CLOSE_DELAY = 400; 124 private static final Rect sTempRect = new Rect(); 125 126 private static String sDefaultFolderName; 127 private static String sHintText; 128 129 private final Alarm mReorderAlarm = new Alarm(); 130 private final Alarm mOnExitAlarm = new Alarm(); 131 private final Alarm mOnScrollHintAlarm = new Alarm(); 132 @Thunk final Alarm mScrollPauseAlarm = new Alarm(); 133 134 @Thunk final ArrayList<View> mItemsInReadingOrder = new ArrayList<View>(); 135 136 private final int mExpandDuration; 137 private final int mMaterialExpandDuration; 138 private final int mMaterialExpandStagger; 139 140 protected final Launcher mLauncher; 141 protected DragController mDragController; 142 public FolderInfo mInfo; 143 144 @Thunk FolderIcon mFolderIcon; 145 146 @Thunk FolderPagedView mContent; 147 public ExtendedEditText mFolderName; 148 private PageIndicatorDots mPageIndicator; 149 150 private View mFooter; 151 private int mFooterHeight; 152 153 // Cell ranks used for drag and drop 154 @Thunk int mTargetRank, mPrevTargetRank, mEmptyCellRank; 155 156 @ViewDebug.ExportedProperty(category = "launcher", 157 mapping = { 158 @ViewDebug.IntToString(from = STATE_NONE, to = "STATE_NONE"), 159 @ViewDebug.IntToString(from = STATE_SMALL, to = "STATE_SMALL"), 160 @ViewDebug.IntToString(from = STATE_ANIMATING, to = "STATE_ANIMATING"), 161 @ViewDebug.IntToString(from = STATE_OPEN, to = "STATE_OPEN"), 162 }) 163 @Thunk int mState = STATE_NONE; 164 @ViewDebug.ExportedProperty(category = "launcher") 165 private boolean mRearrangeOnClose = false; 166 boolean mItemsInvalidated = false; 167 private View mCurrentDragView; 168 private boolean mIsExternalDrag; 169 private boolean mDragInProgress = false; 170 private boolean mDeleteFolderOnDropCompleted = false; 171 private boolean mSuppressFolderDeletion = false; 172 private boolean mItemAddedBackToSelfViaIcon = false; 173 @Thunk float mFolderIconPivotX; 174 @Thunk float mFolderIconPivotY; 175 private boolean mIsEditingName = false; 176 177 @ViewDebug.ExportedProperty(category = "launcher") 178 private boolean mDestroyed; 179 180 @Thunk Runnable mDeferredAction; 181 private boolean mDeferDropAfterUninstall; 182 private boolean mUninstallSuccessful; 183 184 // Folder scrolling 185 private int mScrollAreaOffset; 186 187 @Thunk int mScrollHintDir = SCROLL_NONE; 188 @Thunk int mCurrentScrollDir = SCROLL_NONE; 189 190 /** 191 * Used to inflate the Workspace from XML. 192 * 193 * @param context The application's context. 194 * @param attrs The attributes set containing the Workspace's customization values. 195 */ Folder(Context context, AttributeSet attrs)196 public Folder(Context context, AttributeSet attrs) { 197 super(context, attrs); 198 setAlwaysDrawnWithCacheEnabled(false); 199 Resources res = getResources(); 200 mExpandDuration = res.getInteger(R.integer.config_folderExpandDuration); 201 mMaterialExpandDuration = res.getInteger(R.integer.config_materialFolderExpandDuration); 202 mMaterialExpandStagger = res.getInteger(R.integer.config_materialFolderExpandStagger); 203 204 if (sDefaultFolderName == null) { 205 sDefaultFolderName = res.getString(R.string.folder_name); 206 } 207 if (sHintText == null) { 208 sHintText = res.getString(R.string.folder_hint_text); 209 } 210 mLauncher = Launcher.getLauncher(context); 211 // We need this view to be focusable in touch mode so that when text editing of the folder 212 // name is complete, we have something to focus on, thus hiding the cursor and giving 213 // reliable behavior when clicking the text field (since it will always gain focus on click). 214 setFocusableInTouchMode(true); 215 } 216 217 @Override onFinishInflate()218 protected void onFinishInflate() { 219 super.onFinishInflate(); 220 mContent = (FolderPagedView) findViewById(R.id.folder_content); 221 mContent.setFolder(this); 222 223 mPageIndicator = (PageIndicatorDots) findViewById(R.id.folder_page_indicator); 224 mFolderName = (ExtendedEditText) findViewById(R.id.folder_name); 225 mFolderName.setOnBackKeyListener(this); 226 mFolderName.setOnFocusChangeListener(this); 227 228 if (!Utilities.ATLEAST_MARSHMALLOW) { 229 // We disable action mode in older OSes where floating selection menu is not yet 230 // available. 231 mFolderName.setCustomSelectionActionModeCallback(new ActionMode.Callback() { 232 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 233 return false; 234 } 235 236 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 237 return false; 238 } 239 240 public void onDestroyActionMode(ActionMode mode) { 241 } 242 243 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 244 return false; 245 } 246 }); 247 } 248 mFolderName.setOnEditorActionListener(this); 249 mFolderName.setSelectAllOnFocus(true); 250 mFolderName.setInputType(mFolderName.getInputType() 251 & ~InputType.TYPE_TEXT_FLAG_AUTO_CORRECT 252 & ~InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS 253 | InputType.TYPE_TEXT_FLAG_CAP_WORDS); 254 mFolderName.forceDisableSuggestions(true); 255 256 mFooter = findViewById(R.id.folder_footer); 257 258 // We find out how tall footer wants to be (it is set to wrap_content), so that 259 // we can allocate the appropriate amount of space for it. 260 int measureSpec = MeasureSpec.UNSPECIFIED; 261 mFooter.measure(measureSpec, measureSpec); 262 mFooterHeight = mFooter.getMeasuredHeight(); 263 } 264 onClick(View v)265 public void onClick(View v) { 266 Object tag = v.getTag(); 267 if (tag instanceof ShortcutInfo) { 268 mLauncher.onClick(v); 269 } 270 } 271 onLongClick(View v)272 public boolean onLongClick(View v) { 273 // Return if global dragging is not enabled 274 if (!mLauncher.isDraggingEnabled()) return true; 275 return startDrag(v, new DragOptions()); 276 } 277 startDrag(View v, DragOptions options)278 public boolean startDrag(View v, DragOptions options) { 279 Object tag = v.getTag(); 280 if (tag instanceof ShortcutInfo) { 281 ShortcutInfo item = (ShortcutInfo) tag; 282 if (!v.isInTouchMode()) { 283 return false; 284 } 285 286 mEmptyCellRank = item.rank; 287 mCurrentDragView = v; 288 289 mDragController.addDragListener(this); 290 if (options.isAccessibleDrag) { 291 mDragController.addDragListener(new AccessibleDragListenerAdapter( 292 mContent, CellLayout.FOLDER_ACCESSIBILITY_DRAG) { 293 294 @Override 295 protected void enableAccessibleDrag(boolean enable) { 296 super.enableAccessibleDrag(enable); 297 mFooter.setImportantForAccessibility(enable 298 ? IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS 299 : IMPORTANT_FOR_ACCESSIBILITY_AUTO); 300 } 301 }); 302 } 303 304 mLauncher.getWorkspace().beginDragShared(v, this, options); 305 } 306 return true; 307 } 308 309 @Override onDragStart(DropTarget.DragObject dragObject, DragOptions options)310 public void onDragStart(DropTarget.DragObject dragObject, DragOptions options) { 311 if (dragObject.dragSource != this) { 312 return; 313 } 314 315 mContent.removeItem(mCurrentDragView); 316 if (dragObject.dragInfo instanceof ShortcutInfo) { 317 mItemsInvalidated = true; 318 319 // We do not want to get events for the item being removed, as they will get handled 320 // when the drop completes 321 try (SuppressInfoChanges s = new SuppressInfoChanges()) { 322 mInfo.remove((ShortcutInfo) dragObject.dragInfo, true); 323 } 324 } 325 mDragInProgress = true; 326 mItemAddedBackToSelfViaIcon = false; 327 } 328 329 @Override onDragEnd()330 public void onDragEnd() { 331 if (mIsExternalDrag && mDragInProgress) { 332 completeDragExit(); 333 } 334 mDragController.removeDragListener(this); 335 } 336 isEditingName()337 public boolean isEditingName() { 338 return mIsEditingName; 339 } 340 startEditingFolderName()341 public void startEditingFolderName() { 342 post(new Runnable() { 343 @Override 344 public void run() { 345 mFolderName.setHint(""); 346 mIsEditingName = true; 347 } 348 }); 349 } 350 351 352 @Override onBackKey()353 public boolean onBackKey() { 354 mFolderName.setHint(sHintText); 355 // Convert to a string here to ensure that no other state associated with the text field 356 // gets saved. 357 String newTitle = mFolderName.getText().toString(); 358 mInfo.setTitle(newTitle); 359 mLauncher.getModelWriter().updateItemInDatabase(mInfo); 360 361 Utilities.sendCustomAccessibilityEvent( 362 this, AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED, 363 getContext().getString(R.string.folder_renamed, newTitle)); 364 365 // This ensures that focus is gained every time the field is clicked, which selects all 366 // the text and brings up the soft keyboard if necessary. 367 mFolderName.clearFocus(); 368 369 Selection.setSelection(mFolderName.getText(), 0, 0); 370 mIsEditingName = false; 371 return true; 372 } 373 onEditorAction(TextView v, int actionId, KeyEvent event)374 public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { 375 if (actionId == EditorInfo.IME_ACTION_DONE) { 376 mFolderName.dispatchBackKey(); 377 return true; 378 } 379 return false; 380 } 381 382 @Override getActiveTextView()383 public ExtendedEditText getActiveTextView() { 384 return isEditingName() ? mFolderName : null; 385 } 386 getFolderIcon()387 public FolderIcon getFolderIcon() { 388 return mFolderIcon; 389 } 390 setDragController(DragController dragController)391 public void setDragController(DragController dragController) { 392 mDragController = dragController; 393 } 394 setFolderIcon(FolderIcon icon)395 public void setFolderIcon(FolderIcon icon) { 396 mFolderIcon = icon; 397 } 398 399 @Override onAttachedToWindow()400 protected void onAttachedToWindow() { 401 // requestFocus() causes the focus onto the folder itself, which doesn't cause visual 402 // effect but the next arrow key can start the keyboard focus inside of the folder, not 403 // the folder itself. 404 requestFocus(); 405 super.onAttachedToWindow(); 406 } 407 408 @Override dispatchPopulateAccessibilityEvent(AccessibilityEvent event)409 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 410 // When the folder gets focus, we don't want to announce the list of items. 411 return true; 412 } 413 414 @Override focusSearch(int direction)415 public View focusSearch(int direction) { 416 // When the folder is focused, further focus search should be within the folder contents. 417 return FocusFinder.getInstance().findNextFocus(this, null, direction); 418 } 419 420 /** 421 * @return the FolderInfo object associated with this folder 422 */ getInfo()423 public FolderInfo getInfo() { 424 return mInfo; 425 } 426 bind(FolderInfo info)427 void bind(FolderInfo info) { 428 mInfo = info; 429 ArrayList<ShortcutInfo> children = info.contents; 430 Collections.sort(children, ITEM_POS_COMPARATOR); 431 432 ArrayList<ShortcutInfo> overflow = mContent.bindItems(children); 433 434 // If our folder has too many items we prune them from the list. This is an issue 435 // when upgrading from the old Folders implementation which could contain an unlimited 436 // number of items. 437 // TODO: Remove this, as with multi-page folders, there will never be any overflow 438 for (ShortcutInfo item: overflow) { 439 mInfo.remove(item, false); 440 mLauncher.getModelWriter().deleteItemFromDatabase(item); 441 } 442 443 DragLayer.LayoutParams lp = (DragLayer.LayoutParams) getLayoutParams(); 444 if (lp == null) { 445 lp = new DragLayer.LayoutParams(0, 0); 446 lp.customPosition = true; 447 setLayoutParams(lp); 448 } 449 centerAboutIcon(); 450 451 mItemsInvalidated = true; 452 updateTextViewFocus(); 453 mInfo.addListener(this); 454 455 if (!sDefaultFolderName.contentEquals(mInfo.title)) { 456 mFolderName.setText(mInfo.title); 457 } else { 458 mFolderName.setText(""); 459 } 460 461 // In case any children didn't come across during loading, clean up the folder accordingly 462 mFolderIcon.post(new Runnable() { 463 public void run() { 464 if (getItemCount() <= 1) { 465 replaceFolderWithFinalItem(); 466 } 467 } 468 }); 469 } 470 471 /** 472 * Creates a new UserFolder, inflated from R.layout.user_folder. 473 * 474 * @param launcher The main activity. 475 * 476 * @return A new UserFolder. 477 */ 478 @SuppressLint("InflateParams") fromXml(Launcher launcher)479 static Folder fromXml(Launcher launcher) { 480 return (Folder) launcher.getLayoutInflater().inflate( 481 FeatureFlags.LAUNCHER3_DISABLE_ICON_NORMALIZATION 482 ? R.layout.user_folder : R.layout.user_folder_icon_normalized, null); 483 } 484 485 /** 486 * This method is intended to make the UserFolder to be visually identical in size and position 487 * to its associated FolderIcon. This allows for a seamless transition into the expanded state. 488 */ positionAndSizeAsIcon()489 private void positionAndSizeAsIcon() { 490 if (!(getParent() instanceof DragLayer)) return; 491 setScaleX(0.8f); 492 setScaleY(0.8f); 493 setAlpha(0f); 494 mState = STATE_SMALL; 495 } 496 prepareReveal()497 private void prepareReveal() { 498 setScaleX(1f); 499 setScaleY(1f); 500 setAlpha(1f); 501 mState = STATE_SMALL; 502 } 503 504 /** 505 * Opens the user folder described by the specified tag. The opening of the folder 506 * is animated relative to the specified View. If the View is null, no animation 507 * is played. 508 */ animateOpen()509 public void animateOpen() { 510 Folder openFolder = getOpen(mLauncher); 511 if (openFolder != null && openFolder != this) { 512 // Close any open folder before opening a folder. 513 openFolder.close(true); 514 } 515 516 DragLayer dragLayer = mLauncher.getDragLayer(); 517 // Just verify that the folder hasn't already been added to the DragLayer. 518 // There was a one-off crash where the folder had a parent already. 519 if (getParent() == null) { 520 dragLayer.addView(this); 521 mDragController.addDropTarget(this); 522 } else { 523 if (ProviderConfig.IS_DOGFOOD_BUILD) { 524 Log.e(TAG, "Opening folder (" + this + ") which already has a parent:" 525 + getParent()); 526 } 527 } 528 529 mIsOpen = true; 530 531 mContent.completePendingPageChanges(); 532 if (!mDragInProgress) { 533 // Open on the first page. 534 mContent.snapToPageImmediately(0); 535 } 536 537 // This is set to true in close(), but isn't reset to false until onDropCompleted(). This 538 // leads to an inconsistent state if you drag out of the folder and drag back in without 539 // dropping. One resulting issue is that replaceFolderWithFinalItem() can be called twice. 540 mDeleteFolderOnDropCompleted = false; 541 542 final Runnable onCompleteRunnable; 543 prepareReveal(); 544 centerAboutIcon(); 545 546 mFolderIcon.growAndFadeOut(); 547 548 AnimatorSet anim = LauncherAnimUtils.createAnimatorSet(); 549 int width = getFolderWidth(); 550 int height = getFolderHeight(); 551 552 float transX = - 0.075f * (width / 2 - getPivotX()); 553 float transY = - 0.075f * (height / 2 - getPivotY()); 554 setTranslationX(transX); 555 setTranslationY(transY); 556 PropertyValuesHolder tx = PropertyValuesHolder.ofFloat(TRANSLATION_X, transX, 0); 557 PropertyValuesHolder ty = PropertyValuesHolder.ofFloat(TRANSLATION_Y, transY, 0); 558 559 Animator drift = ObjectAnimator.ofPropertyValuesHolder(this, tx, ty); 560 drift.setDuration(mMaterialExpandDuration); 561 drift.setStartDelay(mMaterialExpandStagger); 562 drift.setInterpolator(new LogDecelerateInterpolator(100, 0)); 563 564 int rx = (int) Math.max(Math.max(width - getPivotX(), 0), getPivotX()); 565 int ry = (int) Math.max(Math.max(height - getPivotY(), 0), getPivotY()); 566 float radius = (float) Math.hypot(rx, ry); 567 568 Animator reveal = new CircleRevealOutlineProvider((int) getPivotX(), 569 (int) getPivotY(), 0, radius).createRevealAnimator(this); 570 reveal.setDuration(mMaterialExpandDuration); 571 reveal.setInterpolator(new LogDecelerateInterpolator(100, 0)); 572 573 mContent.setAlpha(0f); 574 Animator iconsAlpha = ObjectAnimator.ofFloat(mContent, "alpha", 0f, 1f); 575 iconsAlpha.setDuration(mMaterialExpandDuration); 576 iconsAlpha.setStartDelay(mMaterialExpandStagger); 577 iconsAlpha.setInterpolator(new AccelerateInterpolator(1.5f)); 578 579 mFooter.setAlpha(0f); 580 Animator textAlpha = ObjectAnimator.ofFloat(mFooter, "alpha", 0f, 1f); 581 textAlpha.setDuration(mMaterialExpandDuration); 582 textAlpha.setStartDelay(mMaterialExpandStagger); 583 textAlpha.setInterpolator(new AccelerateInterpolator(1.5f)); 584 585 anim.play(drift); 586 anim.play(iconsAlpha); 587 anim.play(textAlpha); 588 anim.play(reveal); 589 590 mContent.setLayerType(LAYER_TYPE_HARDWARE, null); 591 mFooter.setLayerType(LAYER_TYPE_HARDWARE, null); 592 onCompleteRunnable = new Runnable() { 593 @Override 594 public void run() { 595 mContent.setLayerType(LAYER_TYPE_NONE, null); 596 mFooter.setLayerType(LAYER_TYPE_NONE, null); 597 mLauncher.getUserEventDispatcher().resetElapsedContainerMillis(); 598 } 599 }; 600 anim.addListener(new AnimatorListenerAdapter() { 601 @Override 602 public void onAnimationStart(Animator animation) { 603 Utilities.sendCustomAccessibilityEvent( 604 Folder.this, 605 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED, 606 mContent.getAccessibilityDescription()); 607 mState = STATE_ANIMATING; 608 } 609 @Override 610 public void onAnimationEnd(Animator animation) { 611 mState = STATE_OPEN; 612 613 onCompleteRunnable.run(); 614 mContent.setFocusOnFirstChild(); 615 } 616 }); 617 618 // Footer animation 619 if (mContent.getPageCount() > 1 && !mInfo.hasOption(FolderInfo.FLAG_MULTI_PAGE_ANIMATION)) { 620 int footerWidth = mContent.getDesiredWidth() 621 - mFooter.getPaddingLeft() - mFooter.getPaddingRight(); 622 623 float textWidth = mFolderName.getPaint().measureText(mFolderName.getText().toString()); 624 float translation = (footerWidth - textWidth) / 2; 625 mFolderName.setTranslationX(mContent.mIsRtl ? -translation : translation); 626 mPageIndicator.prepareEntryAnimation(); 627 628 // Do not update the flag if we are in drag mode. The flag will be updated, when we 629 // actually drop the icon. 630 final boolean updateAnimationFlag = !mDragInProgress; 631 anim.addListener(new AnimatorListenerAdapter() { 632 633 @SuppressLint("InlinedApi") 634 @Override 635 public void onAnimationEnd(Animator animation) { 636 mFolderName.animate().setDuration(FOLDER_NAME_ANIMATION_DURATION) 637 .translationX(0) 638 .setInterpolator(AnimationUtils.loadInterpolator( 639 mLauncher, android.R.interpolator.fast_out_slow_in)); 640 mPageIndicator.playEntryAnimation(); 641 642 if (updateAnimationFlag) { 643 mInfo.setOption(FolderInfo.FLAG_MULTI_PAGE_ANIMATION, true, 644 mLauncher.getModelWriter()); 645 } 646 } 647 }); 648 } else { 649 mFolderName.setTranslationX(0); 650 } 651 652 mPageIndicator.stopAllAnimations(); 653 anim.start(); 654 655 // Make sure the folder picks up the last drag move even if the finger doesn't move. 656 if (mDragController.isDragging()) { 657 mDragController.forceTouchMove(); 658 } 659 660 mContent.verifyVisibleHighResIcons(mContent.getNextPage()); 661 662 // Notify the accessibility manager that this folder "window" has appeared and occluded 663 // the workspace items 664 sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 665 dragLayer.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 666 } 667 beginExternalDrag()668 public void beginExternalDrag() { 669 mEmptyCellRank = mContent.allocateRankForNewItem(); 670 mIsExternalDrag = true; 671 mDragInProgress = true; 672 673 // Since this folder opened by another controller, it might not get onDrop or 674 // onDropComplete. Perform cleanup once drag-n-drop ends. 675 mDragController.addDragListener(this); 676 } 677 678 @Override isOfType(int type)679 protected boolean isOfType(int type) { 680 return (type & TYPE_FOLDER) != 0; 681 } 682 683 @Override handleClose(boolean animate)684 protected void handleClose(boolean animate) { 685 mIsOpen = false; 686 687 if (isEditingName()) { 688 mFolderName.dispatchBackKey(); 689 } 690 691 if (mFolderIcon != null) { 692 mFolderIcon.shrinkAndFadeIn(animate); 693 } 694 695 if (!(getParent() instanceof DragLayer)) return; 696 DragLayer parent = (DragLayer) getParent(); 697 698 if (animate) { 699 animateClosed(); 700 } else { 701 closeComplete(false); 702 } 703 704 // Notify the accessibility manager that this folder "window" has disappeared and no 705 // longer occludes the workspace items 706 parent.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 707 } 708 animateClosed()709 private void animateClosed() { 710 final ObjectAnimator oa = LauncherAnimUtils.ofViewAlphaAndScale(this, 0, 0.9f, 0.9f); 711 oa.addListener(new AnimatorListenerAdapter() { 712 @Override 713 public void onAnimationEnd(Animator animation) { 714 setLayerType(LAYER_TYPE_NONE, null); 715 closeComplete(true); 716 } 717 @Override 718 public void onAnimationStart(Animator animation) { 719 Utilities.sendCustomAccessibilityEvent( 720 Folder.this, 721 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED, 722 getContext().getString(R.string.folder_closed)); 723 mState = STATE_ANIMATING; 724 } 725 }); 726 oa.setDuration(mExpandDuration); 727 setLayerType(LAYER_TYPE_HARDWARE, null); 728 oa.start(); 729 } 730 closeComplete(boolean wasAnimated)731 private void closeComplete(boolean wasAnimated) { 732 // TODO: Clear all active animations. 733 DragLayer parent = (DragLayer) getParent(); 734 if (parent != null) { 735 parent.removeView(this); 736 } 737 mDragController.removeDropTarget(this); 738 clearFocus(); 739 if (wasAnimated) { 740 mFolderIcon.requestFocus(); 741 } 742 743 if (mRearrangeOnClose) { 744 rearrangeChildren(); 745 mRearrangeOnClose = false; 746 } 747 if (getItemCount() <= 1) { 748 if (!mDragInProgress && !mSuppressFolderDeletion) { 749 replaceFolderWithFinalItem(); 750 } else if (mDragInProgress) { 751 mDeleteFolderOnDropCompleted = true; 752 } 753 } 754 mSuppressFolderDeletion = false; 755 clearDragInfo(); 756 mState = STATE_SMALL; 757 } 758 acceptDrop(DragObject d)759 public boolean acceptDrop(DragObject d) { 760 final ItemInfo item = d.dragInfo; 761 final int itemType = item.itemType; 762 return ((itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 763 itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT || 764 itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) && 765 !isFull()); 766 } 767 onDragEnter(DragObject d)768 public void onDragEnter(DragObject d) { 769 mPrevTargetRank = -1; 770 mOnExitAlarm.cancelAlarm(); 771 // Get the area offset such that the folder only closes if half the drag icon width 772 // is outside the folder area 773 mScrollAreaOffset = d.dragView.getDragRegionWidth() / 2 - d.xOffset; 774 } 775 776 OnAlarmListener mReorderAlarmListener = new OnAlarmListener() { 777 public void onAlarm(Alarm alarm) { 778 mContent.realTimeReorder(mEmptyCellRank, mTargetRank); 779 mEmptyCellRank = mTargetRank; 780 } 781 }; 782 isLayoutRtl()783 public boolean isLayoutRtl() { 784 return (getLayoutDirection() == LAYOUT_DIRECTION_RTL); 785 } 786 787 @Override onDragOver(DragObject d)788 public void onDragOver(DragObject d) { 789 onDragOver(d, REORDER_DELAY); 790 } 791 getTargetRank(DragObject d, float[] recycle)792 private int getTargetRank(DragObject d, float[] recycle) { 793 recycle = d.getVisualCenter(recycle); 794 return mContent.findNearestArea( 795 (int) recycle[0] - getPaddingLeft(), (int) recycle[1] - getPaddingTop()); 796 } 797 onDragOver(DragObject d, int reorderDelay)798 @Thunk void onDragOver(DragObject d, int reorderDelay) { 799 if (mScrollPauseAlarm.alarmPending()) { 800 return; 801 } 802 final float[] r = new float[2]; 803 mTargetRank = getTargetRank(d, r); 804 805 if (mTargetRank != mPrevTargetRank) { 806 mReorderAlarm.cancelAlarm(); 807 mReorderAlarm.setOnAlarmListener(mReorderAlarmListener); 808 mReorderAlarm.setAlarm(REORDER_DELAY); 809 mPrevTargetRank = mTargetRank; 810 811 if (d.stateAnnouncer != null) { 812 d.stateAnnouncer.announce(getContext().getString(R.string.move_to_position, 813 mTargetRank + 1)); 814 } 815 } 816 817 float x = r[0]; 818 int currentPage = mContent.getNextPage(); 819 820 float cellOverlap = mContent.getCurrentCellLayout().getCellWidth() 821 * ICON_OVERSCROLL_WIDTH_FACTOR; 822 boolean isOutsideLeftEdge = x < cellOverlap; 823 boolean isOutsideRightEdge = x > (getWidth() - cellOverlap); 824 825 if (currentPage > 0 && (mContent.mIsRtl ? isOutsideRightEdge : isOutsideLeftEdge)) { 826 showScrollHint(SCROLL_LEFT, d); 827 } else if (currentPage < (mContent.getPageCount() - 1) 828 && (mContent.mIsRtl ? isOutsideLeftEdge : isOutsideRightEdge)) { 829 showScrollHint(SCROLL_RIGHT, d); 830 } else { 831 mOnScrollHintAlarm.cancelAlarm(); 832 if (mScrollHintDir != SCROLL_NONE) { 833 mContent.clearScrollHint(); 834 mScrollHintDir = SCROLL_NONE; 835 } 836 } 837 } 838 showScrollHint(int direction, DragObject d)839 private void showScrollHint(int direction, DragObject d) { 840 // Show scroll hint on the right 841 if (mScrollHintDir != direction) { 842 mContent.showScrollHint(direction); 843 mScrollHintDir = direction; 844 } 845 846 // Set alarm for when the hint is complete 847 if (!mOnScrollHintAlarm.alarmPending() || mCurrentScrollDir != direction) { 848 mCurrentScrollDir = direction; 849 mOnScrollHintAlarm.cancelAlarm(); 850 mOnScrollHintAlarm.setOnAlarmListener(new OnScrollHintListener(d)); 851 mOnScrollHintAlarm.setAlarm(SCROLL_HINT_DURATION); 852 853 mReorderAlarm.cancelAlarm(); 854 mTargetRank = mEmptyCellRank; 855 } 856 } 857 858 OnAlarmListener mOnExitAlarmListener = new OnAlarmListener() { 859 public void onAlarm(Alarm alarm) { 860 completeDragExit(); 861 } 862 }; 863 completeDragExit()864 public void completeDragExit() { 865 if (mIsOpen) { 866 close(true); 867 mRearrangeOnClose = true; 868 } else if (mState == STATE_ANIMATING) { 869 mRearrangeOnClose = true; 870 } else { 871 rearrangeChildren(); 872 clearDragInfo(); 873 } 874 } 875 clearDragInfo()876 private void clearDragInfo() { 877 mCurrentDragView = null; 878 mIsExternalDrag = false; 879 } 880 onDragExit(DragObject d)881 public void onDragExit(DragObject d) { 882 // We only close the folder if this is a true drag exit, ie. not because 883 // a drop has occurred above the folder. 884 if (!d.dragComplete) { 885 mOnExitAlarm.setOnAlarmListener(mOnExitAlarmListener); 886 mOnExitAlarm.setAlarm(ON_EXIT_CLOSE_DELAY); 887 } 888 mReorderAlarm.cancelAlarm(); 889 890 mOnScrollHintAlarm.cancelAlarm(); 891 mScrollPauseAlarm.cancelAlarm(); 892 if (mScrollHintDir != SCROLL_NONE) { 893 mContent.clearScrollHint(); 894 mScrollHintDir = SCROLL_NONE; 895 } 896 } 897 898 /** 899 * When performing an accessibility drop, onDrop is sent immediately after onDragEnter. So we 900 * need to complete all transient states based on timers. 901 */ 902 @Override prepareAccessibilityDrop()903 public void prepareAccessibilityDrop() { 904 if (mReorderAlarm.alarmPending()) { 905 mReorderAlarm.cancelAlarm(); 906 mReorderAlarmListener.onAlarm(mReorderAlarm); 907 } 908 } 909 onDropCompleted(final View target, final DragObject d, final boolean isFlingToDelete, final boolean success)910 public void onDropCompleted(final View target, final DragObject d, 911 final boolean isFlingToDelete, final boolean success) { 912 if (mDeferDropAfterUninstall) { 913 Log.d(TAG, "Deferred handling drop because waiting for uninstall."); 914 mDeferredAction = new Runnable() { 915 public void run() { 916 onDropCompleted(target, d, isFlingToDelete, success); 917 mDeferredAction = null; 918 } 919 }; 920 return; 921 } 922 923 boolean beingCalledAfterUninstall = mDeferredAction != null; 924 boolean successfulDrop = 925 success && (!beingCalledAfterUninstall || mUninstallSuccessful); 926 927 if (successfulDrop) { 928 if (mDeleteFolderOnDropCompleted && !mItemAddedBackToSelfViaIcon && target != this) { 929 replaceFolderWithFinalItem(); 930 } 931 } else { 932 // The drag failed, we need to return the item to the folder 933 ShortcutInfo info = (ShortcutInfo) d.dragInfo; 934 View icon = (mCurrentDragView != null && mCurrentDragView.getTag() == info) 935 ? mCurrentDragView : mContent.createNewView(info); 936 ArrayList<View> views = getItemsInReadingOrder(); 937 views.add(info.rank, icon); 938 mContent.arrangeChildren(views, views.size()); 939 mItemsInvalidated = true; 940 941 try (SuppressInfoChanges s = new SuppressInfoChanges()) { 942 mFolderIcon.onDrop(d); 943 } 944 } 945 946 if (target != this) { 947 if (mOnExitAlarm.alarmPending()) { 948 mOnExitAlarm.cancelAlarm(); 949 if (!successfulDrop) { 950 mSuppressFolderDeletion = true; 951 } 952 mScrollPauseAlarm.cancelAlarm(); 953 completeDragExit(); 954 } 955 } 956 957 mDeleteFolderOnDropCompleted = false; 958 mDragInProgress = false; 959 mItemAddedBackToSelfViaIcon = false; 960 mCurrentDragView = null; 961 962 // Reordering may have occured, and we need to save the new item locations. We do this once 963 // at the end to prevent unnecessary database operations. 964 updateItemLocationsInDatabaseBatch(); 965 966 // Use the item count to check for multi-page as the folder UI may not have 967 // been refreshed yet. 968 if (getItemCount() <= mContent.itemsPerPage()) { 969 // Show the animation, next time something is added to the folder. 970 mInfo.setOption(FolderInfo.FLAG_MULTI_PAGE_ANIMATION, false, 971 mLauncher.getModelWriter()); 972 } 973 974 if (!isFlingToDelete) { 975 // Fling to delete already exits spring loaded mode after the animation finishes. 976 mLauncher.exitSpringLoadedDragModeDelayed(successfulDrop, 977 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 978 } 979 } 980 981 @Override deferCompleteDropAfterUninstallActivity()982 public void deferCompleteDropAfterUninstallActivity() { 983 mDeferDropAfterUninstall = true; 984 } 985 986 @Override onDragObjectRemoved(boolean success)987 public void onDragObjectRemoved(boolean success) { 988 mDeferDropAfterUninstall = false; 989 mUninstallSuccessful = success; 990 if (mDeferredAction != null) { 991 mDeferredAction.run(); 992 } 993 } 994 995 @Override getIntrinsicIconScaleFactor()996 public float getIntrinsicIconScaleFactor() { 997 return 1f; 998 } 999 1000 @Override supportsAppInfoDropTarget()1001 public boolean supportsAppInfoDropTarget() { 1002 return true; 1003 } 1004 1005 @Override supportsDeleteDropTarget()1006 public boolean supportsDeleteDropTarget() { 1007 return true; 1008 } 1009 updateItemLocationsInDatabaseBatch()1010 private void updateItemLocationsInDatabaseBatch() { 1011 ArrayList<View> list = getItemsInReadingOrder(); 1012 ArrayList<ItemInfo> items = new ArrayList<ItemInfo>(); 1013 for (int i = 0; i < list.size(); i++) { 1014 View v = list.get(i); 1015 ItemInfo info = (ItemInfo) v.getTag(); 1016 info.rank = i; 1017 items.add(info); 1018 } 1019 1020 mLauncher.getModelWriter().moveItemsInDatabase(items, mInfo.id, 0); 1021 } 1022 notifyDrop()1023 public void notifyDrop() { 1024 if (mDragInProgress) { 1025 mItemAddedBackToSelfViaIcon = true; 1026 } 1027 } 1028 isDropEnabled()1029 public boolean isDropEnabled() { 1030 return true; 1031 } 1032 isFull()1033 public boolean isFull() { 1034 return mContent.isFull(); 1035 } 1036 centerAboutIcon()1037 private void centerAboutIcon() { 1038 DeviceProfile grid = mLauncher.getDeviceProfile(); 1039 1040 DragLayer.LayoutParams lp = (DragLayer.LayoutParams) getLayoutParams(); 1041 DragLayer parent = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1042 int width = getFolderWidth(); 1043 int height = getFolderHeight(); 1044 1045 float scale = parent.getDescendantRectRelativeToSelf(mFolderIcon, sTempRect); 1046 int centerX = sTempRect.centerX(); 1047 int centerY = sTempRect.centerY(); 1048 int centeredLeft = centerX - width / 2; 1049 int centeredTop = centerY - height / 2; 1050 1051 // We need to bound the folder to the currently visible workspace area 1052 mLauncher.getWorkspace().getPageAreaRelativeToDragLayer(sTempRect); 1053 int left = Math.min(Math.max(sTempRect.left, centeredLeft), 1054 sTempRect.right- width); 1055 int top = Math.min(Math.max(sTempRect.top, centeredTop), 1056 sTempRect.bottom - height); 1057 1058 int distFromEdgeOfScreen = mLauncher.getWorkspace().getPaddingLeft() + getPaddingLeft(); 1059 1060 if (grid.isPhone && (grid.availableWidthPx - width) < 4 * distFromEdgeOfScreen) { 1061 // Center the folder if it is very close to being centered anyway, by virtue of 1062 // filling the majority of the viewport. ie. remove it from the uncanny valley 1063 // of centeredness. 1064 left = (grid.availableWidthPx - width) / 2; 1065 } else if (width >= sTempRect.width()) { 1066 // If the folder doesn't fit within the bounds, center it about the desired bounds 1067 left = sTempRect.left + (sTempRect.width() - width) / 2; 1068 } 1069 if (height >= sTempRect.height()) { 1070 // Folder height is greater than page height, center on page 1071 top = sTempRect.top + (sTempRect.height() - height) / 2; 1072 } else { 1073 // Folder height is less than page height, so bound it to the absolute open folder 1074 // bounds if necessary 1075 Rect folderBounds = grid.getAbsoluteOpenFolderBounds(); 1076 left = Math.max(folderBounds.left, Math.min(left, folderBounds.right - width)); 1077 top = Math.max(folderBounds.top, Math.min(top, folderBounds.bottom - height)); 1078 } 1079 1080 int folderPivotX = width / 2 + (centeredLeft - left); 1081 int folderPivotY = height / 2 + (centeredTop - top); 1082 setPivotX(folderPivotX); 1083 setPivotY(folderPivotY); 1084 1085 mFolderIconPivotX = (int) (mFolderIcon.getMeasuredWidth() * 1086 (1.0f * folderPivotX / width)); 1087 mFolderIconPivotY = (int) (mFolderIcon.getMeasuredHeight() * 1088 (1.0f * folderPivotY / height)); 1089 1090 lp.width = width; 1091 lp.height = height; 1092 lp.x = left; 1093 lp.y = top; 1094 } 1095 getPivotXForIconAnimation()1096 public float getPivotXForIconAnimation() { 1097 return mFolderIconPivotX; 1098 } getPivotYForIconAnimation()1099 public float getPivotYForIconAnimation() { 1100 return mFolderIconPivotY; 1101 } 1102 getContentAreaHeight()1103 private int getContentAreaHeight() { 1104 DeviceProfile grid = mLauncher.getDeviceProfile(); 1105 int maxContentAreaHeight = grid.availableHeightPx 1106 - grid.getTotalWorkspacePadding().y - mFooterHeight; 1107 int height = Math.min(maxContentAreaHeight, 1108 mContent.getDesiredHeight()); 1109 return Math.max(height, MIN_CONTENT_DIMEN); 1110 } 1111 getContentAreaWidth()1112 private int getContentAreaWidth() { 1113 return Math.max(mContent.getDesiredWidth(), MIN_CONTENT_DIMEN); 1114 } 1115 getFolderWidth()1116 private int getFolderWidth() { 1117 return getPaddingLeft() + getPaddingRight() + mContent.getDesiredWidth(); 1118 } 1119 getFolderHeight()1120 private int getFolderHeight() { 1121 return getFolderHeight(getContentAreaHeight()); 1122 } 1123 getFolderHeight(int contentAreaHeight)1124 private int getFolderHeight(int contentAreaHeight) { 1125 return getPaddingTop() + getPaddingBottom() + contentAreaHeight + mFooterHeight; 1126 } 1127 onMeasure(int widthMeasureSpec, int heightMeasureSpec)1128 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 1129 int contentWidth = getContentAreaWidth(); 1130 int contentHeight = getContentAreaHeight(); 1131 1132 int contentAreaWidthSpec = MeasureSpec.makeMeasureSpec(contentWidth, MeasureSpec.EXACTLY); 1133 int contentAreaHeightSpec = MeasureSpec.makeMeasureSpec(contentHeight, MeasureSpec.EXACTLY); 1134 1135 mContent.setFixedSize(contentWidth, contentHeight); 1136 mContent.measure(contentAreaWidthSpec, contentAreaHeightSpec); 1137 1138 if (mContent.getChildCount() > 0) { 1139 int cellIconGap = (mContent.getPageAt(0).getCellWidth() 1140 - mLauncher.getDeviceProfile().iconSizePx) / 2; 1141 mFooter.setPadding(mContent.getPaddingLeft() + cellIconGap, 1142 mFooter.getPaddingTop(), 1143 mContent.getPaddingRight() + cellIconGap, 1144 mFooter.getPaddingBottom()); 1145 } 1146 mFooter.measure(contentAreaWidthSpec, 1147 MeasureSpec.makeMeasureSpec(mFooterHeight, MeasureSpec.EXACTLY)); 1148 1149 int folderWidth = getPaddingLeft() + getPaddingRight() + contentWidth; 1150 int folderHeight = getFolderHeight(contentHeight); 1151 setMeasuredDimension(folderWidth, folderHeight); 1152 } 1153 1154 /** 1155 * Rearranges the children based on their rank. 1156 */ rearrangeChildren()1157 public void rearrangeChildren() { 1158 rearrangeChildren(-1); 1159 } 1160 1161 /** 1162 * Rearranges the children based on their rank. 1163 * @param itemCount if greater than the total children count, empty spaces are left at the end, 1164 * otherwise it is ignored. 1165 */ rearrangeChildren(int itemCount)1166 public void rearrangeChildren(int itemCount) { 1167 ArrayList<View> views = getItemsInReadingOrder(); 1168 mContent.arrangeChildren(views, Math.max(itemCount, views.size())); 1169 mItemsInvalidated = true; 1170 } 1171 getItemCount()1172 public int getItemCount() { 1173 return mContent.getItemCount(); 1174 } 1175 replaceFolderWithFinalItem()1176 @Thunk void replaceFolderWithFinalItem() { 1177 // Add the last remaining child to the workspace in place of the folder 1178 Runnable onCompleteRunnable = new Runnable() { 1179 @Override 1180 public void run() { 1181 int itemCount = mInfo.contents.size(); 1182 if (itemCount <= 1) { 1183 View newIcon = null; 1184 1185 if (itemCount == 1) { 1186 // Move the item from the folder to the workspace, in the position of the 1187 // folder 1188 CellLayout cellLayout = mLauncher.getCellLayout(mInfo.container, 1189 mInfo.screenId); 1190 ShortcutInfo finalItem = mInfo.contents.remove(0); 1191 newIcon = mLauncher.createShortcut(cellLayout, finalItem); 1192 mLauncher.getModelWriter().addOrMoveItemInDatabase(finalItem, 1193 mInfo.container, mInfo.screenId, mInfo.cellX, mInfo.cellY); 1194 } 1195 1196 // Remove the folder 1197 mLauncher.removeItem(mFolderIcon, mInfo, true /* deleteFromDb */); 1198 if (mFolderIcon instanceof DropTarget) { 1199 mDragController.removeDropTarget((DropTarget) mFolderIcon); 1200 } 1201 1202 if (newIcon != null) { 1203 // We add the child after removing the folder to prevent both from existing 1204 // at the same time in the CellLayout. We need to add the new item with 1205 // addInScreenFromBind() to ensure that hotseat items are placed correctly. 1206 mLauncher.getWorkspace().addInScreenFromBind(newIcon, mInfo); 1207 1208 // Focus the newly created child 1209 newIcon.requestFocus(); 1210 } 1211 } 1212 } 1213 }; 1214 View finalChild = mContent.getLastItem(); 1215 if (finalChild != null) { 1216 mFolderIcon.performDestroyAnimation(finalChild, onCompleteRunnable); 1217 } else { 1218 onCompleteRunnable.run(); 1219 } 1220 mDestroyed = true; 1221 } 1222 isDestroyed()1223 public boolean isDestroyed() { 1224 return mDestroyed; 1225 } 1226 1227 // This method keeps track of the first and last item in the folder for the purposes 1228 // of keyboard focus updateTextViewFocus()1229 public void updateTextViewFocus() { 1230 final View firstChild = mContent.getFirstItem(); 1231 final View lastChild = mContent.getLastItem(); 1232 if (firstChild != null && lastChild != null) { 1233 mFolderName.setNextFocusDownId(lastChild.getId()); 1234 mFolderName.setNextFocusRightId(lastChild.getId()); 1235 mFolderName.setNextFocusLeftId(lastChild.getId()); 1236 mFolderName.setNextFocusUpId(lastChild.getId()); 1237 // Hitting TAB from the folder name wraps around to the first item on the current 1238 // folder page, and hitting SHIFT+TAB from that item wraps back to the folder name. 1239 mFolderName.setNextFocusForwardId(firstChild.getId()); 1240 // When clicking off the folder when editing the name, this Folder gains focus. When 1241 // pressing an arrow key from that state, give the focus to the first item. 1242 this.setNextFocusDownId(firstChild.getId()); 1243 this.setNextFocusRightId(firstChild.getId()); 1244 this.setNextFocusLeftId(firstChild.getId()); 1245 this.setNextFocusUpId(firstChild.getId()); 1246 // When pressing shift+tab in the above state, give the focus to the last item. 1247 setOnKeyListener(new OnKeyListener() { 1248 @Override 1249 public boolean onKey(View v, int keyCode, KeyEvent event) { 1250 boolean isShiftPlusTab = keyCode == KeyEvent.KEYCODE_TAB && 1251 event.hasModifiers(KeyEvent.META_SHIFT_ON); 1252 if (isShiftPlusTab && Folder.this.isFocused()) { 1253 return lastChild.requestFocus(); 1254 } 1255 return false; 1256 } 1257 }); 1258 } 1259 } 1260 onDrop(DragObject d)1261 public void onDrop(DragObject d) { 1262 Runnable cleanUpRunnable = null; 1263 1264 // If we are coming from All Apps space, we defer removing the extra empty screen 1265 // until the folder closes 1266 if (d.dragSource != mLauncher.getWorkspace() && !(d.dragSource instanceof Folder)) { 1267 cleanUpRunnable = new Runnable() { 1268 @Override 1269 public void run() { 1270 mLauncher.exitSpringLoadedDragModeDelayed(true, 1271 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, 1272 null); 1273 } 1274 }; 1275 } 1276 1277 // If the icon was dropped while the page was being scrolled, we need to compute 1278 // the target location again such that the icon is placed of the final page. 1279 if (!mContent.rankOnCurrentPage(mEmptyCellRank)) { 1280 // Reorder again. 1281 mTargetRank = getTargetRank(d, null); 1282 1283 // Rearrange items immediately. 1284 mReorderAlarmListener.onAlarm(mReorderAlarm); 1285 1286 mOnScrollHintAlarm.cancelAlarm(); 1287 mScrollPauseAlarm.cancelAlarm(); 1288 } 1289 mContent.completePendingPageChanges(); 1290 1291 View currentDragView; 1292 final ShortcutInfo si; 1293 if (d.dragInfo instanceof AppInfo) { 1294 // Came from all apps -- make a copy. 1295 si = ((AppInfo) d.dragInfo).makeShortcut(); 1296 } else { 1297 // ShortcutInfo 1298 si = (ShortcutInfo) d.dragInfo; 1299 } 1300 if (mIsExternalDrag) { 1301 currentDragView = mContent.createAndAddViewForRank(si, mEmptyCellRank); 1302 // Actually move the item in the database if it was an external drag. Call this 1303 // before creating the view, so that ShortcutInfo is updated appropriately. 1304 mLauncher.getModelWriter().addOrMoveItemInDatabase( 1305 si, mInfo.id, 0, si.cellX, si.cellY); 1306 1307 // We only need to update the locations if it doesn't get handled in #onDropCompleted. 1308 if (d.dragSource != this) { 1309 updateItemLocationsInDatabaseBatch(); 1310 } 1311 mIsExternalDrag = false; 1312 } else { 1313 currentDragView = mCurrentDragView; 1314 mContent.addViewForRank(currentDragView, si, mEmptyCellRank); 1315 } 1316 1317 if (d.dragView.hasDrawn()) { 1318 1319 // Temporarily reset the scale such that the animation target gets calculated correctly. 1320 float scaleX = getScaleX(); 1321 float scaleY = getScaleY(); 1322 setScaleX(1.0f); 1323 setScaleY(1.0f); 1324 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, currentDragView, 1325 cleanUpRunnable, null); 1326 setScaleX(scaleX); 1327 setScaleY(scaleY); 1328 } else { 1329 d.deferDragViewCleanupPostAnimation = false; 1330 currentDragView.setVisibility(VISIBLE); 1331 } 1332 mItemsInvalidated = true; 1333 rearrangeChildren(); 1334 1335 // Temporarily suppress the listener, as we did all the work already here. 1336 try (SuppressInfoChanges s = new SuppressInfoChanges()) { 1337 mInfo.add(si, false); 1338 } 1339 1340 // Clear the drag info, as it is no longer being dragged. 1341 mDragInProgress = false; 1342 1343 if (mContent.getPageCount() > 1) { 1344 // The animation has already been shown while opening the folder. 1345 mInfo.setOption(FolderInfo.FLAG_MULTI_PAGE_ANIMATION, true, mLauncher.getModelWriter()); 1346 } 1347 1348 if (d.stateAnnouncer != null) { 1349 d.stateAnnouncer.completeAction(R.string.item_moved); 1350 } 1351 } 1352 1353 // This is used so the item doesn't immediately appear in the folder when added. In one case 1354 // we need to create the illusion that the item isn't added back to the folder yet, to 1355 // to correspond to the animation of the icon back into the folder. This is hideItem(ShortcutInfo info)1356 public void hideItem(ShortcutInfo info) { 1357 View v = getViewForInfo(info); 1358 v.setVisibility(INVISIBLE); 1359 } showItem(ShortcutInfo info)1360 public void showItem(ShortcutInfo info) { 1361 View v = getViewForInfo(info); 1362 v.setVisibility(VISIBLE); 1363 } 1364 1365 @Override onAdd(ShortcutInfo item)1366 public void onAdd(ShortcutInfo item) { 1367 mContent.createAndAddViewForRank(item, mContent.allocateRankForNewItem()); 1368 mItemsInvalidated = true; 1369 mLauncher.getModelWriter().addOrMoveItemInDatabase( 1370 item, mInfo.id, 0, item.cellX, item.cellY); 1371 } 1372 onRemove(ShortcutInfo item)1373 public void onRemove(ShortcutInfo item) { 1374 mItemsInvalidated = true; 1375 View v = getViewForInfo(item); 1376 mContent.removeItem(v); 1377 if (mState == STATE_ANIMATING) { 1378 mRearrangeOnClose = true; 1379 } else { 1380 rearrangeChildren(); 1381 } 1382 if (getItemCount() <= 1) { 1383 if (mIsOpen) { 1384 close(true); 1385 } else { 1386 replaceFolderWithFinalItem(); 1387 } 1388 } 1389 } 1390 getViewForInfo(final ShortcutInfo item)1391 private View getViewForInfo(final ShortcutInfo item) { 1392 return mContent.iterateOverItems(new ItemOperator() { 1393 1394 @Override 1395 public boolean evaluate(ItemInfo info, View view) { 1396 return info == item; 1397 } 1398 }); 1399 } 1400 1401 @Override 1402 public void onItemsChanged(boolean animate) { 1403 updateTextViewFocus(); 1404 } 1405 1406 @Override 1407 public void prepareAutoUpdate() { 1408 close(false); 1409 } 1410 1411 public void onTitleChanged(CharSequence title) { 1412 } 1413 1414 public ArrayList<View> getItemsInReadingOrder() { 1415 if (mItemsInvalidated) { 1416 mItemsInReadingOrder.clear(); 1417 mContent.iterateOverItems(new ItemOperator() { 1418 1419 @Override 1420 public boolean evaluate(ItemInfo info, View view) { 1421 mItemsInReadingOrder.add(view); 1422 return false; 1423 } 1424 }); 1425 mItemsInvalidated = false; 1426 } 1427 return mItemsInReadingOrder; 1428 } 1429 1430 public void onFocusChange(View v, boolean hasFocus) { 1431 if (v == mFolderName) { 1432 if (hasFocus) { 1433 startEditingFolderName(); 1434 } else { 1435 mFolderName.dispatchBackKey(); 1436 } 1437 } 1438 } 1439 1440 @Override 1441 public void getHitRectRelativeToDragLayer(Rect outRect) { 1442 getHitRect(outRect); 1443 outRect.left -= mScrollAreaOffset; 1444 outRect.right += mScrollAreaOffset; 1445 } 1446 1447 @Override 1448 public void fillInLogContainerData(View v, ItemInfo info, Target target, Target targetParent) { 1449 target.gridX = info.cellX; 1450 target.gridY = info.cellY; 1451 target.pageIndex = mContent.getCurrentPage(); 1452 targetParent.containerType = ContainerType.FOLDER; 1453 } 1454 1455 private class OnScrollHintListener implements OnAlarmListener { 1456 1457 private final DragObject mDragObject; 1458 1459 OnScrollHintListener(DragObject object) { 1460 mDragObject = object; 1461 } 1462 1463 /** 1464 * Scroll hint has been shown long enough. Now scroll to appropriate page. 1465 */ 1466 @Override 1467 public void onAlarm(Alarm alarm) { 1468 if (mCurrentScrollDir == SCROLL_LEFT) { 1469 mContent.scrollLeft(); 1470 mScrollHintDir = SCROLL_NONE; 1471 } else if (mCurrentScrollDir == SCROLL_RIGHT) { 1472 mContent.scrollRight(); 1473 mScrollHintDir = SCROLL_NONE; 1474 } else { 1475 // This should not happen 1476 return; 1477 } 1478 mCurrentScrollDir = SCROLL_NONE; 1479 1480 // Pause drag event until the scrolling is finished 1481 mScrollPauseAlarm.setOnAlarmListener(new OnScrollFinishedListener(mDragObject)); 1482 mScrollPauseAlarm.setAlarm(RESCROLL_DELAY); 1483 } 1484 } 1485 1486 private class OnScrollFinishedListener implements OnAlarmListener { 1487 1488 private final DragObject mDragObject; 1489 1490 OnScrollFinishedListener(DragObject object) { 1491 mDragObject = object; 1492 } 1493 1494 /** 1495 * Page scroll is complete. 1496 */ 1497 @Override 1498 public void onAlarm(Alarm alarm) { 1499 // Reorder immediately on page change. 1500 onDragOver(mDragObject, 1); 1501 } 1502 } 1503 1504 // Compares item position based on rank and position giving priority to the rank. 1505 public static final Comparator<ItemInfo> ITEM_POS_COMPARATOR = new Comparator<ItemInfo>() { 1506 1507 @Override 1508 public int compare(ItemInfo lhs, ItemInfo rhs) { 1509 if (lhs.rank != rhs.rank) { 1510 return lhs.rank - rhs.rank; 1511 } else if (lhs.cellY != rhs.cellY) { 1512 return lhs.cellY - rhs.cellY; 1513 } else { 1514 return lhs.cellX - rhs.cellX; 1515 } 1516 } 1517 }; 1518 1519 /** 1520 * Temporary resource held while we don't want to handle info changes 1521 */ 1522 private class SuppressInfoChanges implements AutoCloseable { 1523 1524 SuppressInfoChanges() { 1525 mInfo.removeListener(Folder.this); 1526 } 1527 1528 @Override 1529 public void close() { 1530 mInfo.addListener(Folder.this); 1531 updateTextViewFocus(); 1532 } 1533 } 1534 1535 /** 1536 * Returns a folder which is already open or null 1537 */ 1538 public static Folder getOpen(Launcher launcher) { 1539 return getOpenView(launcher, TYPE_FOLDER); 1540 } 1541 1542 @Override 1543 public int getLogContainerType() { 1544 return ContainerType.FOLDER; 1545 } 1546 } 1547