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.internal.view.menu; 18 19import android.content.Context; 20import android.content.res.Configuration; 21import android.content.res.Resources; 22import android.os.Parcel; 23import android.os.Parcelable; 24import android.transition.Transition; 25import android.transition.TransitionManager; 26import android.util.SparseBooleanArray; 27import android.view.ActionProvider; 28import android.view.Gravity; 29import android.view.MenuItem; 30import android.view.SoundEffectConstants; 31import android.view.View; 32import android.view.View.MeasureSpec; 33import android.view.ViewGroup; 34import android.view.accessibility.AccessibilityNodeInfo; 35import android.widget.ImageButton; 36import android.widget.ListPopupWindow; 37import android.widget.ListPopupWindow.ForwardingListener; 38import com.android.internal.transition.ActionBarTransition; 39import com.android.internal.view.ActionBarPolicy; 40import com.android.internal.view.menu.ActionMenuView.ActionMenuChildView; 41 42import java.util.ArrayList; 43 44/** 45 * MenuPresenter for building action menus as seen in the action bar and action modes. 46 */ 47public class ActionMenuPresenter extends BaseMenuPresenter 48 implements ActionProvider.SubUiVisibilityListener { 49 private static final String TAG = "ActionMenuPresenter"; 50 51 private View mOverflowButton; 52 private boolean mReserveOverflow; 53 private boolean mReserveOverflowSet; 54 private int mWidthLimit; 55 private int mActionItemWidthLimit; 56 private int mMaxItems; 57 private boolean mMaxItemsSet; 58 private boolean mStrictWidthLimit; 59 private boolean mWidthLimitSet; 60 private boolean mExpandedActionViewsExclusive; 61 62 private int mMinCellSize; 63 64 // Group IDs that have been added as actions - used temporarily, allocated here for reuse. 65 private final SparseBooleanArray mActionButtonGroups = new SparseBooleanArray(); 66 67 private View mScrapActionButtonView; 68 69 private OverflowPopup mOverflowPopup; 70 private ActionButtonSubmenu mActionButtonPopup; 71 72 private OpenOverflowRunnable mPostedOpenRunnable; 73 74 final PopupPresenterCallback mPopupPresenterCallback = new PopupPresenterCallback(); 75 int mOpenSubMenuId; 76 77 public ActionMenuPresenter(Context context) { 78 super(context, com.android.internal.R.layout.action_menu_layout, 79 com.android.internal.R.layout.action_menu_item_layout); 80 } 81 82 @Override 83 public void initForMenu(Context context, MenuBuilder menu) { 84 super.initForMenu(context, menu); 85 86 final Resources res = context.getResources(); 87 88 final ActionBarPolicy abp = ActionBarPolicy.get(context); 89 if (!mReserveOverflowSet) { 90 mReserveOverflow = abp.showsOverflowMenuButton(); 91 } 92 93 if (!mWidthLimitSet) { 94 mWidthLimit = abp.getEmbeddedMenuWidthLimit(); 95 } 96 97 // Measure for initial configuration 98 if (!mMaxItemsSet) { 99 mMaxItems = abp.getMaxActionButtons(); 100 } 101 102 int width = mWidthLimit; 103 if (mReserveOverflow) { 104 if (mOverflowButton == null) { 105 mOverflowButton = new OverflowMenuButton(mSystemContext); 106 final int spec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 107 mOverflowButton.measure(spec, spec); 108 } 109 width -= mOverflowButton.getMeasuredWidth(); 110 } else { 111 mOverflowButton = null; 112 } 113 114 mActionItemWidthLimit = width; 115 116 mMinCellSize = (int) (ActionMenuView.MIN_CELL_SIZE * res.getDisplayMetrics().density); 117 118 // Drop a scrap view as it may no longer reflect the proper context/config. 119 mScrapActionButtonView = null; 120 } 121 122 public void onConfigurationChanged(Configuration newConfig) { 123 if (!mMaxItemsSet) { 124 mMaxItems = mContext.getResources().getInteger( 125 com.android.internal.R.integer.max_action_buttons); 126 } 127 if (mMenu != null) { 128 mMenu.onItemsChanged(true); 129 } 130 } 131 132 public void setWidthLimit(int width, boolean strict) { 133 mWidthLimit = width; 134 mStrictWidthLimit = strict; 135 mWidthLimitSet = true; 136 } 137 138 public void setReserveOverflow(boolean reserveOverflow) { 139 mReserveOverflow = reserveOverflow; 140 mReserveOverflowSet = true; 141 } 142 143 public void setItemLimit(int itemCount) { 144 mMaxItems = itemCount; 145 mMaxItemsSet = true; 146 } 147 148 public void setExpandedActionViewsExclusive(boolean isExclusive) { 149 mExpandedActionViewsExclusive = isExclusive; 150 } 151 152 @Override 153 public MenuView getMenuView(ViewGroup root) { 154 MenuView result = super.getMenuView(root); 155 ((ActionMenuView) result).setPresenter(this); 156 return result; 157 } 158 159 @Override 160 public View getItemView(final MenuItemImpl item, View convertView, ViewGroup parent) { 161 View actionView = item.getActionView(); 162 if (actionView == null || item.hasCollapsibleActionView()) { 163 actionView = super.getItemView(item, convertView, parent); 164 } 165 actionView.setVisibility(item.isActionViewExpanded() ? View.GONE : View.VISIBLE); 166 167 if (item.hasSubMenu()) { 168 actionView.setOnTouchListener(new ForwardingListener(actionView) { 169 @Override 170 public ListPopupWindow getPopup() { 171 return mActionButtonPopup != null ? mActionButtonPopup.getPopup() : null; 172 } 173 174 @Override 175 protected boolean onForwardingStarted() { 176 return onSubMenuSelected((SubMenuBuilder) item.getSubMenu()); 177 } 178 179 @Override 180 protected boolean onForwardingStopped() { 181 return dismissPopupMenus(); 182 } 183 }); 184 } else { 185 actionView.setOnTouchListener(null); 186 } 187 188 final ActionMenuView menuParent = (ActionMenuView) parent; 189 final ViewGroup.LayoutParams lp = actionView.getLayoutParams(); 190 if (!menuParent.checkLayoutParams(lp)) { 191 actionView.setLayoutParams(menuParent.generateLayoutParams(lp)); 192 } 193 return actionView; 194 } 195 196 @Override 197 public void bindItemView(MenuItemImpl item, MenuView.ItemView itemView) { 198 itemView.initialize(item, 0); 199 200 final ActionMenuView menuView = (ActionMenuView) mMenuView; 201 ActionMenuItemView actionItemView = (ActionMenuItemView) itemView; 202 actionItemView.setItemInvoker(menuView); 203 } 204 205 @Override 206 public boolean shouldIncludeItem(int childIndex, MenuItemImpl item) { 207 return item.isActionButton(); 208 } 209 210 @Override 211 public void updateMenuView(boolean cleared) { 212 final ViewGroup menuViewParent = (ViewGroup) ((View) mMenuView).getParent(); 213 if (menuViewParent != null) { 214 ActionBarTransition.beginDelayedTransition(menuViewParent); 215 } 216 super.updateMenuView(cleared); 217 218 ((View) mMenuView).requestLayout(); 219 220 if (mMenu != null) { 221 final ArrayList<MenuItemImpl> actionItems = mMenu.getActionItems(); 222 final int count = actionItems.size(); 223 for (int i = 0; i < count; i++) { 224 final ActionProvider provider = actionItems.get(i).getActionProvider(); 225 if (provider != null) { 226 provider.setSubUiVisibilityListener(this); 227 } 228 } 229 } 230 231 final ArrayList<MenuItemImpl> nonActionItems = mMenu != null ? 232 mMenu.getNonActionItems() : null; 233 234 boolean hasOverflow = false; 235 if (mReserveOverflow && nonActionItems != null) { 236 final int count = nonActionItems.size(); 237 if (count == 1) { 238 hasOverflow = !nonActionItems.get(0).isActionViewExpanded(); 239 } else { 240 hasOverflow = count > 0; 241 } 242 } 243 244 if (hasOverflow) { 245 if (mOverflowButton == null) { 246 mOverflowButton = new OverflowMenuButton(mSystemContext); 247 } 248 ViewGroup parent = (ViewGroup) mOverflowButton.getParent(); 249 if (parent != mMenuView) { 250 if (parent != null) { 251 parent.removeView(mOverflowButton); 252 } 253 ActionMenuView menuView = (ActionMenuView) mMenuView; 254 menuView.addView(mOverflowButton, menuView.generateOverflowButtonLayoutParams()); 255 } 256 } else if (mOverflowButton != null && mOverflowButton.getParent() == mMenuView) { 257 ((ViewGroup) mMenuView).removeView(mOverflowButton); 258 } 259 260 ((ActionMenuView) mMenuView).setOverflowReserved(mReserveOverflow); 261 } 262 263 @Override 264 public boolean filterLeftoverView(ViewGroup parent, int childIndex) { 265 if (parent.getChildAt(childIndex) == mOverflowButton) return false; 266 return super.filterLeftoverView(parent, childIndex); 267 } 268 269 public boolean onSubMenuSelected(SubMenuBuilder subMenu) { 270 if (!subMenu.hasVisibleItems()) return false; 271 272 SubMenuBuilder topSubMenu = subMenu; 273 while (topSubMenu.getParentMenu() != mMenu) { 274 topSubMenu = (SubMenuBuilder) topSubMenu.getParentMenu(); 275 } 276 View anchor = findViewForItem(topSubMenu.getItem()); 277 if (anchor == null) { 278 if (mOverflowButton == null) return false; 279 anchor = mOverflowButton; 280 } 281 282 mOpenSubMenuId = subMenu.getItem().getItemId(); 283 mActionButtonPopup = new ActionButtonSubmenu(mContext, subMenu); 284 mActionButtonPopup.setAnchorView(anchor); 285 mActionButtonPopup.show(); 286 super.onSubMenuSelected(subMenu); 287 return true; 288 } 289 290 private View findViewForItem(MenuItem item) { 291 final ViewGroup parent = (ViewGroup) mMenuView; 292 if (parent == null) return null; 293 294 final int count = parent.getChildCount(); 295 for (int i = 0; i < count; i++) { 296 final View child = parent.getChildAt(i); 297 if (child instanceof MenuView.ItemView && 298 ((MenuView.ItemView) child).getItemData() == item) { 299 return child; 300 } 301 } 302 return null; 303 } 304 305 /** 306 * Display the overflow menu if one is present. 307 * @return true if the overflow menu was shown, false otherwise. 308 */ 309 public boolean showOverflowMenu() { 310 if (mReserveOverflow && !isOverflowMenuShowing() && mMenu != null && mMenuView != null && 311 mPostedOpenRunnable == null && !mMenu.getNonActionItems().isEmpty()) { 312 OverflowPopup popup = new OverflowPopup(mContext, mMenu, mOverflowButton, true); 313 mPostedOpenRunnable = new OpenOverflowRunnable(popup); 314 // Post this for later; we might still need a layout for the anchor to be right. 315 ((View) mMenuView).post(mPostedOpenRunnable); 316 317 // ActionMenuPresenter uses null as a callback argument here 318 // to indicate overflow is opening. 319 super.onSubMenuSelected(null); 320 321 return true; 322 } 323 return false; 324 } 325 326 /** 327 * Hide the overflow menu if it is currently showing. 328 * 329 * @return true if the overflow menu was hidden, false otherwise. 330 */ 331 public boolean hideOverflowMenu() { 332 if (mPostedOpenRunnable != null && mMenuView != null) { 333 ((View) mMenuView).removeCallbacks(mPostedOpenRunnable); 334 mPostedOpenRunnable = null; 335 return true; 336 } 337 338 MenuPopupHelper popup = mOverflowPopup; 339 if (popup != null) { 340 popup.dismiss(); 341 return true; 342 } 343 return false; 344 } 345 346 /** 347 * Dismiss all popup menus - overflow and submenus. 348 * @return true if popups were dismissed, false otherwise. (This can be because none were open.) 349 */ 350 public boolean dismissPopupMenus() { 351 boolean result = hideOverflowMenu(); 352 result |= hideSubMenus(); 353 return result; 354 } 355 356 /** 357 * Dismiss all submenu popups. 358 * 359 * @return true if popups were dismissed, false otherwise. (This can be because none were open.) 360 */ 361 public boolean hideSubMenus() { 362 if (mActionButtonPopup != null) { 363 mActionButtonPopup.dismiss(); 364 return true; 365 } 366 return false; 367 } 368 369 /** 370 * @return true if the overflow menu is currently showing 371 */ 372 public boolean isOverflowMenuShowing() { 373 return mOverflowPopup != null && mOverflowPopup.isShowing(); 374 } 375 376 public boolean isOverflowMenuShowPending() { 377 return mPostedOpenRunnable != null || isOverflowMenuShowing(); 378 } 379 380 /** 381 * @return true if space has been reserved in the action menu for an overflow item. 382 */ 383 public boolean isOverflowReserved() { 384 return mReserveOverflow; 385 } 386 387 public boolean flagActionItems() { 388 final ArrayList<MenuItemImpl> visibleItems = mMenu.getVisibleItems(); 389 final int itemsSize = visibleItems.size(); 390 int maxActions = mMaxItems; 391 int widthLimit = mActionItemWidthLimit; 392 final int querySpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 393 final ViewGroup parent = (ViewGroup) mMenuView; 394 395 int requiredItems = 0; 396 int requestedItems = 0; 397 int firstActionWidth = 0; 398 boolean hasOverflow = false; 399 for (int i = 0; i < itemsSize; i++) { 400 MenuItemImpl item = visibleItems.get(i); 401 if (item.requiresActionButton()) { 402 requiredItems++; 403 } else if (item.requestsActionButton()) { 404 requestedItems++; 405 } else { 406 hasOverflow = true; 407 } 408 if (mExpandedActionViewsExclusive && item.isActionViewExpanded()) { 409 // Overflow everything if we have an expanded action view and we're 410 // space constrained. 411 maxActions = 0; 412 } 413 } 414 415 // Reserve a spot for the overflow item if needed. 416 if (mReserveOverflow && 417 (hasOverflow || requiredItems + requestedItems > maxActions)) { 418 maxActions--; 419 } 420 maxActions -= requiredItems; 421 422 final SparseBooleanArray seenGroups = mActionButtonGroups; 423 seenGroups.clear(); 424 425 int cellSize = 0; 426 int cellsRemaining = 0; 427 if (mStrictWidthLimit) { 428 cellsRemaining = widthLimit / mMinCellSize; 429 final int cellSizeRemaining = widthLimit % mMinCellSize; 430 cellSize = mMinCellSize + cellSizeRemaining / cellsRemaining; 431 } 432 433 // Flag as many more requested items as will fit. 434 for (int i = 0; i < itemsSize; i++) { 435 MenuItemImpl item = visibleItems.get(i); 436 437 if (item.requiresActionButton()) { 438 View v = getItemView(item, mScrapActionButtonView, parent); 439 if (mScrapActionButtonView == null) { 440 mScrapActionButtonView = v; 441 } 442 if (mStrictWidthLimit) { 443 cellsRemaining -= ActionMenuView.measureChildForCells(v, 444 cellSize, cellsRemaining, querySpec, 0); 445 } else { 446 v.measure(querySpec, querySpec); 447 } 448 final int measuredWidth = v.getMeasuredWidth(); 449 widthLimit -= measuredWidth; 450 if (firstActionWidth == 0) { 451 firstActionWidth = measuredWidth; 452 } 453 final int groupId = item.getGroupId(); 454 if (groupId != 0) { 455 seenGroups.put(groupId, true); 456 } 457 item.setIsActionButton(true); 458 } else if (item.requestsActionButton()) { 459 // Items in a group with other items that already have an action slot 460 // can break the max actions rule, but not the width limit. 461 final int groupId = item.getGroupId(); 462 final boolean inGroup = seenGroups.get(groupId); 463 boolean isAction = (maxActions > 0 || inGroup) && widthLimit > 0 && 464 (!mStrictWidthLimit || cellsRemaining > 0); 465 466 if (isAction) { 467 View v = getItemView(item, mScrapActionButtonView, parent); 468 if (mScrapActionButtonView == null) { 469 mScrapActionButtonView = v; 470 } 471 if (mStrictWidthLimit) { 472 final int cells = ActionMenuView.measureChildForCells(v, 473 cellSize, cellsRemaining, querySpec, 0); 474 cellsRemaining -= cells; 475 if (cells == 0) { 476 isAction = false; 477 } 478 } else { 479 v.measure(querySpec, querySpec); 480 } 481 final int measuredWidth = v.getMeasuredWidth(); 482 widthLimit -= measuredWidth; 483 if (firstActionWidth == 0) { 484 firstActionWidth = measuredWidth; 485 } 486 487 if (mStrictWidthLimit) { 488 isAction &= widthLimit >= 0; 489 } else { 490 // Did this push the entire first item past the limit? 491 isAction &= widthLimit + firstActionWidth > 0; 492 } 493 } 494 495 if (isAction && groupId != 0) { 496 seenGroups.put(groupId, true); 497 } else if (inGroup) { 498 // We broke the width limit. Demote the whole group, they all overflow now. 499 seenGroups.put(groupId, false); 500 for (int j = 0; j < i; j++) { 501 MenuItemImpl areYouMyGroupie = visibleItems.get(j); 502 if (areYouMyGroupie.getGroupId() == groupId) { 503 // Give back the action slot 504 if (areYouMyGroupie.isActionButton()) maxActions++; 505 areYouMyGroupie.setIsActionButton(false); 506 } 507 } 508 } 509 510 if (isAction) maxActions--; 511 512 item.setIsActionButton(isAction); 513 } else { 514 // Neither requires nor requests an action button. 515 item.setIsActionButton(false); 516 } 517 } 518 return true; 519 } 520 521 @Override 522 public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) { 523 dismissPopupMenus(); 524 super.onCloseMenu(menu, allMenusAreClosing); 525 } 526 527 @Override 528 public Parcelable onSaveInstanceState() { 529 SavedState state = new SavedState(); 530 state.openSubMenuId = mOpenSubMenuId; 531 return state; 532 } 533 534 @Override 535 public void onRestoreInstanceState(Parcelable state) { 536 SavedState saved = (SavedState) state; 537 if (saved.openSubMenuId > 0) { 538 MenuItem item = mMenu.findItem(saved.openSubMenuId); 539 if (item != null) { 540 SubMenuBuilder subMenu = (SubMenuBuilder) item.getSubMenu(); 541 onSubMenuSelected(subMenu); 542 } 543 } 544 } 545 546 @Override 547 public void onSubUiVisibilityChanged(boolean isVisible) { 548 if (isVisible) { 549 // Not a submenu, but treat it like one. 550 super.onSubMenuSelected(null); 551 } else { 552 mMenu.close(false); 553 } 554 } 555 556 private static class SavedState implements Parcelable { 557 public int openSubMenuId; 558 559 SavedState() { 560 } 561 562 SavedState(Parcel in) { 563 openSubMenuId = in.readInt(); 564 } 565 566 @Override 567 public int describeContents() { 568 return 0; 569 } 570 571 @Override 572 public void writeToParcel(Parcel dest, int flags) { 573 dest.writeInt(openSubMenuId); 574 } 575 576 public static final Parcelable.Creator<SavedState> CREATOR 577 = new Parcelable.Creator<SavedState>() { 578 public SavedState createFromParcel(Parcel in) { 579 return new SavedState(in); 580 } 581 582 public SavedState[] newArray(int size) { 583 return new SavedState[size]; 584 } 585 }; 586 } 587 588 private class OverflowMenuButton extends ImageButton implements ActionMenuChildView { 589 public OverflowMenuButton(Context context) { 590 super(context, null, com.android.internal.R.attr.actionOverflowButtonStyle); 591 592 setClickable(true); 593 setFocusable(true); 594 setVisibility(VISIBLE); 595 setEnabled(true); 596 597 setOnTouchListener(new ForwardingListener(this) { 598 @Override 599 public ListPopupWindow getPopup() { 600 if (mOverflowPopup == null) { 601 return null; 602 } 603 604 return mOverflowPopup.getPopup(); 605 } 606 607 @Override 608 public boolean onForwardingStarted() { 609 showOverflowMenu(); 610 return true; 611 } 612 613 @Override 614 public boolean onForwardingStopped() { 615 // Displaying the popup occurs asynchronously, so wait for 616 // the runnable to finish before deciding whether to stop 617 // forwarding. 618 if (mPostedOpenRunnable != null) { 619 return false; 620 } 621 622 hideOverflowMenu(); 623 return true; 624 } 625 }); 626 } 627 628 @Override 629 public boolean performClick() { 630 if (super.performClick()) { 631 return true; 632 } 633 634 playSoundEffect(SoundEffectConstants.CLICK); 635 showOverflowMenu(); 636 return true; 637 } 638 639 @Override 640 public boolean needsDividerBefore() { 641 return false; 642 } 643 644 @Override 645 public boolean needsDividerAfter() { 646 return false; 647 } 648 649 @Override 650 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 651 if (MeasureSpec.getMode(heightMeasureSpec) == MeasureSpec.AT_MOST) { 652 // Fill available height 653 heightMeasureSpec = MeasureSpec.makeMeasureSpec( 654 MeasureSpec.getSize(heightMeasureSpec), MeasureSpec.EXACTLY); 655 } 656 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 657 } 658 659 @Override 660 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 661 super.onInitializeAccessibilityNodeInfo(info); 662 info.setCanOpenPopup(true); 663 } 664 } 665 666 private class OverflowPopup extends MenuPopupHelper { 667 public OverflowPopup(Context context, MenuBuilder menu, View anchorView, 668 boolean overflowOnly) { 669 super(context, menu, anchorView, overflowOnly); 670 setGravity(Gravity.END); 671 setCallback(mPopupPresenterCallback); 672 } 673 674 @Override 675 public void onDismiss() { 676 super.onDismiss(); 677 mMenu.close(); 678 mOverflowPopup = null; 679 } 680 } 681 682 private class ActionButtonSubmenu extends MenuPopupHelper { 683 private SubMenuBuilder mSubMenu; 684 685 public ActionButtonSubmenu(Context context, SubMenuBuilder subMenu) { 686 super(context, subMenu); 687 mSubMenu = subMenu; 688 689 MenuItemImpl item = (MenuItemImpl) subMenu.getItem(); 690 if (!item.isActionButton()) { 691 // Give a reasonable anchor to nested submenus. 692 setAnchorView(mOverflowButton == null ? (View) mMenuView : mOverflowButton); 693 } 694 695 setCallback(mPopupPresenterCallback); 696 697 boolean preserveIconSpacing = false; 698 final int count = subMenu.size(); 699 for (int i = 0; i < count; i++) { 700 MenuItem childItem = subMenu.getItem(i); 701 if (childItem.isVisible() && childItem.getIcon() != null) { 702 preserveIconSpacing = true; 703 break; 704 } 705 } 706 setForceShowIcon(preserveIconSpacing); 707 } 708 709 @Override 710 public void onDismiss() { 711 super.onDismiss(); 712 mActionButtonPopup = null; 713 mOpenSubMenuId = 0; 714 } 715 } 716 717 private class PopupPresenterCallback implements MenuPresenter.Callback { 718 719 @Override 720 public boolean onOpenSubMenu(MenuBuilder subMenu) { 721 if (subMenu == null) return false; 722 723 mOpenSubMenuId = ((SubMenuBuilder) subMenu).getItem().getItemId(); 724 return false; 725 } 726 727 @Override 728 public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) { 729 if (menu instanceof SubMenuBuilder) { 730 ((SubMenuBuilder) menu).getRootMenu().close(false); 731 } 732 } 733 } 734 735 private class OpenOverflowRunnable implements Runnable { 736 private OverflowPopup mPopup; 737 738 public OpenOverflowRunnable(OverflowPopup popup) { 739 mPopup = popup; 740 } 741 742 public void run() { 743 mMenu.changeMenuMode(); 744 final View menuView = (View) mMenuView; 745 if (menuView != null && menuView.getWindowToken() != null && mPopup.tryShow()) { 746 mOverflowPopup = mPopup; 747 } 748 mPostedOpenRunnable = null; 749 } 750 } 751} 752