| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.wm; |
| |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_RECENTS; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_STANDARD; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_MULTI_WINDOW; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_SECONDARY; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED; |
| import static android.app.WindowConfiguration.isSplitScreenWindowingMode; |
| import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_BEHIND; |
| import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_UNSET; |
| import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED; |
| |
| import static com.android.server.wm.ActivityStack.ActivityState.RESUMED; |
| import static com.android.server.wm.ActivityStack.STACK_VISIBILITY_VISIBLE; |
| import static com.android.server.wm.ActivityStackSupervisor.TAG_TASKS; |
| import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_STATES; |
| import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_TASKS; |
| import static com.android.server.wm.ActivityTaskManagerService.TAG_STACK; |
| import static com.android.server.wm.DisplayContent.alwaysCreateStack; |
| import static com.android.server.wm.ProtoLogGroup.WM_DEBUG_ADD_REMOVE; |
| import static com.android.server.wm.ProtoLogGroup.WM_DEBUG_ORIENTATION; |
| import static com.android.server.wm.RootWindowContainer.TAG_STATES; |
| import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_STACK; |
| import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; |
| |
| import android.annotation.Nullable; |
| import android.app.ActivityOptions; |
| import android.app.WindowConfiguration; |
| import android.content.Intent; |
| import android.content.pm.ActivityInfo; |
| import android.content.pm.ApplicationInfo; |
| import android.os.UserHandle; |
| import android.util.IntArray; |
| import android.util.Slog; |
| import android.view.SurfaceControl; |
| import android.window.WindowContainerTransaction; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.util.ToBooleanFunction; |
| import com.android.internal.util.function.pooled.PooledLambda; |
| import com.android.internal.util.function.pooled.PooledPredicate; |
| import com.android.server.protolog.common.ProtoLog; |
| |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * {@link DisplayArea} that represents a section of a screen that contains app window containers. |
| */ |
| final class TaskDisplayArea extends DisplayArea<ActivityStack> { |
| |
| DisplayContent mDisplayContent; |
| |
| /** |
| * A control placed at the appropriate level for transitions to occur. |
| */ |
| private SurfaceControl mAppAnimationLayer; |
| private SurfaceControl mBoostedAppAnimationLayer; |
| private SurfaceControl mHomeAppAnimationLayer; |
| |
| /** |
| * Given that the split-screen divider does not have an AppWindowToken, it |
| * will have to live inside of a "NonAppWindowContainer". However, in visual Z order |
| * it will need to be interleaved with some of our children, appearing on top of |
| * both docked stacks but underneath any assistant stacks. |
| * |
| * To solve this problem we have this anchor control, which will always exist so |
| * we can always assign it the correct value in our {@link #assignChildLayers}. |
| * Likewise since it always exists, we can always |
| * assign the divider a layer relative to it. This way we prevent linking lifecycle |
| * events between tasks and the divider window. |
| */ |
| private SurfaceControl mSplitScreenDividerAnchor; |
| |
| // Cached reference to some special tasks we tend to get a lot so we don't need to loop |
| // through the list to find them. |
| private ActivityStack mRootHomeTask; |
| private ActivityStack mRootPinnedTask; |
| private ActivityStack mRootSplitScreenPrimaryTask; |
| |
| // TODO(b/159029784): Remove when getStack() behavior is cleaned-up |
| private ActivityStack mRootRecentsTask; |
| |
| private final ArrayList<ActivityStack> mTmpAlwaysOnTopStacks = new ArrayList<>(); |
| private final ArrayList<ActivityStack> mTmpNormalStacks = new ArrayList<>(); |
| private final ArrayList<ActivityStack> mTmpHomeStacks = new ArrayList<>(); |
| private final IntArray mTmpNeedsZBoostIndexes = new IntArray(); |
| private int mTmpLayerForSplitScreenDividerAnchor; |
| private int mTmpLayerForAnimationLayer; |
| |
| private ArrayList<Task> mTmpTasks = new ArrayList<>(); |
| |
| private ActivityTaskManagerService mAtmService; |
| |
| private RootWindowContainer mRootWindowContainer; |
| |
| // When non-null, new tasks get put into this root task. |
| Task mLaunchRootTask = null; |
| |
| /** |
| * A focusable stack that is purposely to be positioned at the top. Although the stack may not |
| * have the topmost index, it is used as a preferred candidate to prevent being unable to resume |
| * target stack properly when there are other focusable always-on-top stacks. |
| */ |
| ActivityStack mPreferredTopFocusableStack; |
| |
| private final RootWindowContainer.FindTaskResult |
| mTmpFindTaskResult = new RootWindowContainer.FindTaskResult(); |
| |
| /** |
| * If this is the same as {@link #getFocusedStack} then the activity on the top of the focused |
| * stack has been resumed. If stacks are changing position this will hold the old stack until |
| * the new stack becomes resumed after which it will be set to current focused stack. |
| */ |
| ActivityStack mLastFocusedStack; |
| /** |
| * All of the stacks on this display. Order matters, topmost stack is in front of all other |
| * stacks, bottommost behind. Accessed directly by ActivityManager package classes. Any calls |
| * changing the list should also call {@link #onStackOrderChanged()}. |
| */ |
| private ArrayList<OnStackOrderChangedListener> mStackOrderChangedCallbacks = new ArrayList<>(); |
| |
| /** |
| * The task display area is removed from the system and we are just waiting for all activities |
| * on it to be finished before removing this object. |
| */ |
| private boolean mRemoved; |
| |
| TaskDisplayArea(DisplayContent displayContent, WindowManagerService service, String name, |
| int displayAreaFeature) { |
| super(service, Type.ANY, name, displayAreaFeature); |
| mDisplayContent = displayContent; |
| mRootWindowContainer = service.mRoot; |
| mAtmService = service.mAtmService; |
| } |
| |
| /** |
| * Returns the topmost stack on the display that is compatible with the input windowing mode |
| * and activity type. Null is no compatible stack on the display. |
| */ |
| ActivityStack getStack(int windowingMode, int activityType) { |
| if (activityType == ACTIVITY_TYPE_HOME) { |
| return mRootHomeTask; |
| } else if (activityType == ACTIVITY_TYPE_RECENTS) { |
| return mRootRecentsTask; |
| } |
| if (windowingMode == WINDOWING_MODE_PINNED) { |
| return mRootPinnedTask; |
| } else if (windowingMode == WINDOWING_MODE_SPLIT_SCREEN_PRIMARY) { |
| return mRootSplitScreenPrimaryTask; |
| } |
| for (int i = getChildCount() - 1; i >= 0; --i) { |
| final ActivityStack stack = getChildAt(i); |
| if (activityType == ACTIVITY_TYPE_UNDEFINED |
| && windowingMode == stack.getWindowingMode()) { |
| // Passing in undefined type means we want to match the topmost stack with the |
| // windowing mode. |
| return stack; |
| } |
| if (stack.isCompatible(windowingMode, activityType)) { |
| return stack; |
| } |
| } |
| return null; |
| } |
| |
| @VisibleForTesting |
| ActivityStack getTopStack() { |
| final int count = getChildCount(); |
| return count > 0 ? getChildAt(count - 1) : null; |
| } |
| |
| // TODO: Figure-out a way to remove since it might be a source of confusion. |
| int getIndexOf(ActivityStack stack) { |
| return mChildren.indexOf(stack); |
| } |
| |
| @Nullable ActivityStack getRootHomeTask() { |
| return mRootHomeTask; |
| } |
| |
| @Nullable ActivityStack getRootRecentsTask() { |
| return mRootRecentsTask; |
| } |
| |
| ActivityStack getRootPinnedTask() { |
| return mRootPinnedTask; |
| } |
| |
| ActivityStack getRootSplitScreenPrimaryTask() { |
| return mRootSplitScreenPrimaryTask; |
| } |
| |
| ActivityStack getRootSplitScreenSecondaryTask() { |
| for (int i = mChildren.size() - 1; i >= 0; --i) { |
| if (mChildren.get(i).inSplitScreenSecondaryWindowingMode()) { |
| return mChildren.get(i); |
| } |
| } |
| return null; |
| } |
| |
| ArrayList<Task> getVisibleTasks() { |
| final ArrayList<Task> visibleTasks = new ArrayList<>(); |
| forAllTasks(task -> { |
| if (task.isLeafTask() && task.isVisible()) { |
| visibleTasks.add(task); |
| } |
| }); |
| return visibleTasks; |
| } |
| |
| void onStackWindowingModeChanged(ActivityStack stack) { |
| removeStackReferenceIfNeeded(stack); |
| addStackReferenceIfNeeded(stack); |
| if (stack == mRootPinnedTask && getTopStack() != stack) { |
| // Looks like this stack changed windowing mode to pinned. Move it to the top. |
| positionChildAt(POSITION_TOP, stack, false /* includingParents */); |
| } |
| } |
| |
| void addStackReferenceIfNeeded(ActivityStack stack) { |
| if (stack.isActivityTypeHome()) { |
| if (mRootHomeTask != null) { |
| if (!stack.isDescendantOf(mRootHomeTask)) { |
| throw new IllegalArgumentException("addStackReferenceIfNeeded: home stack=" |
| + mRootHomeTask + " already exist on display=" + this |
| + " stack=" + stack); |
| } |
| } else { |
| mRootHomeTask = stack; |
| } |
| } else if (stack.isActivityTypeRecents()) { |
| if (mRootRecentsTask != null) { |
| if (!stack.isDescendantOf(mRootRecentsTask)) { |
| throw new IllegalArgumentException("addStackReferenceIfNeeded: recents stack=" |
| + mRootRecentsTask + " already exist on display=" + this |
| + " stack=" + stack); |
| } |
| } else { |
| mRootRecentsTask = stack; |
| } |
| } |
| |
| if (!stack.isRootTask()) { |
| return; |
| } |
| final int windowingMode = stack.getWindowingMode(); |
| if (windowingMode == WINDOWING_MODE_PINNED) { |
| if (mRootPinnedTask != null) { |
| throw new IllegalArgumentException( |
| "addStackReferenceIfNeeded: pinned stack=" + mRootPinnedTask |
| + " already exist on display=" + this + " stack=" + stack); |
| } |
| mRootPinnedTask = stack; |
| } else if (windowingMode == WINDOWING_MODE_SPLIT_SCREEN_PRIMARY) { |
| if (mRootSplitScreenPrimaryTask != null) { |
| throw new IllegalArgumentException( |
| "addStackReferenceIfNeeded: split screen primary stack=" |
| + mRootSplitScreenPrimaryTask |
| + " already exist on display=" + this + " stack=" + stack); |
| } |
| mRootSplitScreenPrimaryTask = stack; |
| } |
| } |
| |
| void removeStackReferenceIfNeeded(ActivityStack stack) { |
| if (stack == mRootHomeTask) { |
| mRootHomeTask = null; |
| } else if (stack == mRootRecentsTask) { |
| mRootRecentsTask = null; |
| } else if (stack == mRootPinnedTask) { |
| mRootPinnedTask = null; |
| } else if (stack == mRootSplitScreenPrimaryTask) { |
| mRootSplitScreenPrimaryTask = null; |
| } |
| } |
| |
| @Override |
| void addChild(ActivityStack stack, int position) { |
| if (DEBUG_STACK) Slog.d(TAG_WM, "Set stack=" + stack + " on taskDisplayArea=" + this); |
| addStackReferenceIfNeeded(stack); |
| position = findPositionForStack(position, stack, true /* adding */); |
| |
| super.addChild(stack, position); |
| mAtmService.updateSleepIfNeededLocked(); |
| |
| positionStackAt(stack, position); |
| } |
| |
| @Override |
| protected void removeChild(ActivityStack stack) { |
| super.removeChild(stack); |
| onStackRemoved(stack); |
| mAtmService.updateSleepIfNeededLocked(); |
| removeStackReferenceIfNeeded(stack); |
| } |
| |
| @Override |
| boolean isOnTop() { |
| // Considered always on top |
| return true; |
| } |
| |
| @Override |
| void positionChildAt(int position, ActivityStack child, boolean includingParents) { |
| final boolean moveToTop = position >= getChildCount() - 1; |
| final boolean moveToBottom = (position == POSITION_BOTTOM || position == 0); |
| |
| // Reset mPreferredTopFocusableStack before positioning to top or {@link |
| // ActivityStackSupervisor#updateTopResumedActivityIfNeeded()} won't update the top |
| // resumed activity. |
| final boolean wasContained = mChildren.contains(child); |
| if (moveToTop && wasContained && child.isFocusable()) { |
| mPreferredTopFocusableStack = null; |
| } |
| |
| if (child.getWindowConfiguration().isAlwaysOnTop() && !moveToTop) { |
| // This stack is always-on-top, override the default behavior. |
| Slog.w(TAG_WM, "Ignoring move of always-on-top stack=" + this + " to bottom"); |
| |
| // Moving to its current position, as we must call super but we don't want to |
| // perform any meaningful action. |
| final int currentPosition = mChildren.indexOf(child); |
| super.positionChildAt(currentPosition, child, false /* includingParents */); |
| return; |
| } |
| // We don't allow untrusted display to top when task stack moves to top, |
| // until user tapping this display to change display position as top intentionally. |
| if (!mDisplayContent.isTrusted() && !getParent().isOnTop()) { |
| includingParents = false; |
| } |
| final int targetPosition = findPositionForStack(position, child, false /* adding */); |
| super.positionChildAt(targetPosition, child, false /* includingParents */); |
| |
| if (includingParents && (moveToTop || moveToBottom)) { |
| // The DisplayContent children do not re-order, but we still want to move the |
| // display of this stack container because the intention of positioning is to have |
| // higher z-order to gain focus. |
| mDisplayContent.positionDisplayAt(moveToTop ? POSITION_TOP : POSITION_BOTTOM, |
| true /* includingParents */); |
| } |
| |
| child.updateTaskMovement(moveToTop); |
| |
| mDisplayContent.setLayoutNeeded(); |
| |
| // The insert position may be adjusted to non-top when there is always-on-top stack. Since |
| // the original position is preferred to be top, the stack should have higher priority when |
| // we are looking for top focusable stack. The condition {@code wasContained} restricts the |
| // preferred stack is set only when moving an existing stack to top instead of adding a new |
| // stack that may be too early (e.g. in the middle of launching or reparenting). |
| if (moveToTop && child.isFocusableAndVisible()) { |
| mPreferredTopFocusableStack = child; |
| } else if (mPreferredTopFocusableStack == child) { |
| mPreferredTopFocusableStack = null; |
| } |
| } |
| |
| /** |
| * Assigns a priority number to stack types. This priority defines an order between the types |
| * of stacks that are added to the task display area. |
| * |
| * Higher priority number indicates that the stack should have a higher z-order. |
| * |
| * @return the priority of the stack |
| */ |
| private int getPriority(ActivityStack stack) { |
| if (mWmService.mAssistantOnTopOfDream && stack.isActivityTypeAssistant()) return 4; |
| if (stack.isActivityTypeDream()) return 3; |
| if (stack.inPinnedWindowingMode()) return 2; |
| if (stack.isAlwaysOnTop()) return 1; |
| return 0; |
| } |
| |
| private int findMinPositionForStack(ActivityStack stack) { |
| int minPosition = POSITION_BOTTOM; |
| for (int i = 0; i < mChildren.size(); ++i) { |
| if (getPriority(getStackAt(i)) < getPriority(stack)) { |
| minPosition = i; |
| } else { |
| break; |
| } |
| } |
| |
| if (stack.isAlwaysOnTop()) { |
| // Since a stack could be repositioned while still being one of the children, we check |
| // if this always-on-top stack already exists and if so, set the minPosition to its |
| // previous position. |
| final int currentIndex = getIndexOf(stack); |
| if (currentIndex > minPosition) { |
| minPosition = currentIndex; |
| } |
| } |
| return minPosition; |
| } |
| |
| private int findMaxPositionForStack(ActivityStack stack) { |
| for (int i = mChildren.size() - 1; i >= 0; --i) { |
| final ActivityStack curr = getStackAt(i); |
| // Since a stack could be repositioned while still being one of the children, we check |
| // if 'curr' is the same stack and skip it if so |
| final boolean sameStack = curr == stack; |
| if (getPriority(curr) <= getPriority(stack) && !sameStack) { |
| return i; |
| } |
| } |
| return 0; |
| } |
| |
| /** |
| * When stack is added or repositioned, find a proper position for it. |
| * |
| * The order is defined as: |
| * - Dream is on top of everything |
| * - PiP is directly below the Dream |
| * - always-on-top stacks are directly below PiP; new always-on-top stacks are added above |
| * existing ones |
| * - other non-always-on-top stacks come directly below always-on-top stacks; new |
| * non-always-on-top stacks are added directly below always-on-top stacks and above existing |
| * non-always-on-top stacks |
| * - if {@link #mAssistantOnTopOfDream} is enabled, then Assistant is on top of everything |
| * (including the Dream); otherwise, it is a normal non-always-on-top stack |
| * |
| * @param requestedPosition Position requested by caller. |
| * @param stack Stack to be added or positioned. |
| * @param adding Flag indicates whether we're adding a new stack or positioning an existing. |
| * @return The proper position for the stack. |
| */ |
| private int findPositionForStack(int requestedPosition, ActivityStack stack, boolean adding) { |
| // The max possible position we can insert the stack at. |
| int maxPosition = findMaxPositionForStack(stack); |
| // The min possible position we can insert the stack at. |
| int minPosition = findMinPositionForStack(stack); |
| |
| // Cap the requested position to something reasonable for the previous position check |
| // below. |
| if (requestedPosition == POSITION_TOP) { |
| requestedPosition = mChildren.size(); |
| } else if (requestedPosition == POSITION_BOTTOM) { |
| requestedPosition = 0; |
| } |
| |
| int targetPosition = requestedPosition; |
| targetPosition = Math.min(targetPosition, maxPosition); |
| targetPosition = Math.max(targetPosition, minPosition); |
| |
| int prevPosition = mChildren.indexOf(stack); |
| // The positions we calculated above (maxPosition, minPosition) do not take into |
| // consideration the following edge cases. |
| // 1) We need to adjust the position depending on the value "adding". |
| // 2) When we are moving a stack to another position, we also need to adjust the |
| // position depending on whether the stack is moving to a higher or lower position. |
| if ((targetPosition != requestedPosition) && (adding || targetPosition < prevPosition)) { |
| targetPosition++; |
| } |
| |
| return targetPosition; |
| } |
| |
| @Override |
| boolean forAllWindows(ToBooleanFunction<WindowState> callback, |
| boolean traverseTopToBottom) { |
| if (traverseTopToBottom) { |
| if (super.forAllWindows(callback, traverseTopToBottom)) { |
| return true; |
| } |
| if (forAllExitingAppTokenWindows(callback, traverseTopToBottom)) { |
| return true; |
| } |
| } else { |
| if (forAllExitingAppTokenWindows(callback, traverseTopToBottom)) { |
| return true; |
| } |
| if (super.forAllWindows(callback, traverseTopToBottom)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private boolean forAllExitingAppTokenWindows(ToBooleanFunction<WindowState> callback, |
| boolean traverseTopToBottom) { |
| // For legacy reasons we process the TaskStack.mExitingActivities first here before the |
| // app tokens. |
| // TODO: Investigate if we need to continue to do this or if we can just process them |
| // in-order. |
| if (traverseTopToBottom) { |
| for (int i = mChildren.size() - 1; i >= 0; --i) { |
| final List<ActivityRecord> activities = mChildren.get(i).mExitingActivities; |
| for (int j = activities.size() - 1; j >= 0; --j) { |
| if (activities.get(j).forAllWindowsUnchecked(callback, |
| traverseTopToBottom)) { |
| return true; |
| } |
| } |
| } |
| } else { |
| final int count = mChildren.size(); |
| for (int i = 0; i < count; ++i) { |
| final List<ActivityRecord> activities = mChildren.get(i).mExitingActivities; |
| final int appTokensCount = activities.size(); |
| for (int j = 0; j < appTokensCount; j++) { |
| if (activities.get(j).forAllWindowsUnchecked(callback, |
| traverseTopToBottom)) { |
| return true; |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| void setExitingTokensHasVisible(boolean hasVisible) { |
| for (int i = mChildren.size() - 1; i >= 0; --i) { |
| final ArrayList<ActivityRecord> activities = mChildren.get(i).mExitingActivities; |
| for (int j = activities.size() - 1; j >= 0; --j) { |
| activities.get(j).hasVisible = hasVisible; |
| } |
| } |
| } |
| |
| void removeExistingAppTokensIfPossible() { |
| for (int i = mChildren.size() - 1; i >= 0; --i) { |
| final ArrayList<ActivityRecord> activities = mChildren.get(i).mExitingActivities; |
| for (int j = activities.size() - 1; j >= 0; --j) { |
| final ActivityRecord activity = activities.get(j); |
| if (!activity.hasVisible && !mDisplayContent.mClosingApps.contains(activity) |
| && (!activity.mIsExiting || activity.isEmpty())) { |
| // Make sure there is no animation running on this activity, so any windows |
| // associated with it will be removed as soon as their animations are |
| // complete. |
| cancelAnimation(); |
| ProtoLog.v(WM_DEBUG_ADD_REMOVE, |
| "performLayout: Activity exiting now removed %s", activity); |
| activity.removeIfPossible(); |
| } |
| } |
| } |
| } |
| |
| @Override |
| int getOrientation(int candidate) { |
| if (isStackVisible(WINDOWING_MODE_SPLIT_SCREEN_PRIMARY)) { |
| // Apps and their containers are not allowed to specify an orientation while using |
| // root tasks...except for the home stack if it is not resizable and currently |
| // visible (top of) its root task. |
| if (mRootHomeTask != null && !mRootHomeTask.isResizeable()) { |
| // Manually nest one-level because because getOrientation() checks fillsParent() |
| // which checks that requestedOverrideBounds() is empty. However, in this case, |
| // it is not empty because it's been overridden to maintain the fullscreen size |
| // within a smaller split-root. |
| final Task topHomeTask = mRootHomeTask.getTopMostTask(); |
| final ActivityRecord topHomeActivity = topHomeTask.getTopNonFinishingActivity(); |
| // If a home activity is in the process of launching and isn't yet visible we |
| // should still respect the stack's preferred orientation to ensure rotation occurs |
| // before the home activity finishes launching. |
| final boolean isHomeActivityLaunching = topHomeActivity != null |
| && topHomeActivity.mVisibleRequested; |
| if (topHomeTask.isVisible() || isHomeActivityLaunching) { |
| final int orientation = topHomeTask.getOrientation(); |
| if (orientation != SCREEN_ORIENTATION_UNSET) { |
| return orientation; |
| } |
| } |
| } |
| return SCREEN_ORIENTATION_UNSPECIFIED; |
| } |
| |
| final int orientation = super.getOrientation(candidate); |
| if (orientation != SCREEN_ORIENTATION_UNSET |
| && orientation != SCREEN_ORIENTATION_BEHIND) { |
| ProtoLog.v(WM_DEBUG_ORIENTATION, |
| "App is requesting an orientation, return %d for display id=%d", |
| orientation, mDisplayContent.mDisplayId); |
| return orientation; |
| } |
| |
| ProtoLog.v(WM_DEBUG_ORIENTATION, |
| "No app is requesting an orientation, return %d for display id=%d", |
| mDisplayContent.getLastOrientation(), mDisplayContent.mDisplayId); |
| // The next app has not been requested to be visible, so we keep the current orientation |
| // to prevent freezing/unfreezing the display too early. |
| return mDisplayContent.getLastOrientation(); |
| } |
| |
| @Override |
| void assignChildLayers(SurfaceControl.Transaction t) { |
| assignStackOrdering(t); |
| |
| for (int i = 0; i < mChildren.size(); i++) { |
| final ActivityStack s = mChildren.get(i); |
| s.assignChildLayers(t); |
| } |
| } |
| |
| void assignStackOrdering(SurfaceControl.Transaction t) { |
| if (getParent() == null) { |
| return; |
| } |
| mTmpAlwaysOnTopStacks.clear(); |
| mTmpHomeStacks.clear(); |
| mTmpNormalStacks.clear(); |
| for (int i = 0; i < mChildren.size(); ++i) { |
| final ActivityStack s = mChildren.get(i); |
| if (s.isAlwaysOnTop()) { |
| mTmpAlwaysOnTopStacks.add(s); |
| } else if (s.isActivityTypeHome()) { |
| mTmpHomeStacks.add(s); |
| } else { |
| mTmpNormalStacks.add(s); |
| } |
| } |
| |
| int layer = 0; |
| // Place home stacks to the bottom. |
| layer = adjustRootTaskLayer(t, mTmpHomeStacks, layer, false /* normalStacks */); |
| // The home animation layer is between the home stacks and the normal stacks. |
| final int layerForHomeAnimationLayer = layer++; |
| mTmpLayerForSplitScreenDividerAnchor = layer++; |
| mTmpLayerForAnimationLayer = layer++; |
| layer = adjustRootTaskLayer(t, mTmpNormalStacks, layer, true /* normalStacks */); |
| |
| // The boosted animation layer is between the normal stacks and the always on top |
| // stacks. |
| final int layerForBoostedAnimationLayer = layer++; |
| adjustRootTaskLayer(t, mTmpAlwaysOnTopStacks, layer, false /* normalStacks */); |
| |
| t.setLayer(mHomeAppAnimationLayer, layerForHomeAnimationLayer); |
| t.setLayer(mAppAnimationLayer, mTmpLayerForAnimationLayer); |
| t.setLayer(mSplitScreenDividerAnchor, mTmpLayerForSplitScreenDividerAnchor); |
| t.setLayer(mBoostedAppAnimationLayer, layerForBoostedAnimationLayer); |
| } |
| |
| private int adjustNormalStackLayer(ActivityStack s, int layer) { |
| if (s.inSplitScreenWindowingMode()) { |
| // The split screen divider anchor is located above the split screen window. |
| mTmpLayerForSplitScreenDividerAnchor = layer++; |
| } |
| if (s.isTaskAnimating() || s.isAppTransitioning()) { |
| // The animation layer is located above the highest animating stack and no |
| // higher. |
| mTmpLayerForAnimationLayer = layer++; |
| } |
| return layer; |
| } |
| |
| /** |
| * Adjusts the layer of the stack which belongs to the same group. |
| * Note that there are three stack groups: home stacks, always on top stacks, and normal stacks. |
| * |
| * @param startLayer The beginning layer of this group of stacks. |
| * @param normalStacks Set {@code true} if this group is neither home nor always on top. |
| * @return The adjusted layer value. |
| */ |
| private int adjustRootTaskLayer(SurfaceControl.Transaction t, ArrayList<ActivityStack> stacks, |
| int startLayer, boolean normalStacks) { |
| mTmpNeedsZBoostIndexes.clear(); |
| final int stackSize = stacks.size(); |
| for (int i = 0; i < stackSize; i++) { |
| final ActivityStack stack = stacks.get(i); |
| if (!stack.needsZBoost()) { |
| stack.assignLayer(t, startLayer++); |
| if (normalStacks) { |
| startLayer = adjustNormalStackLayer(stack, startLayer); |
| } |
| } else { |
| mTmpNeedsZBoostIndexes.add(i); |
| } |
| } |
| |
| final int zBoostSize = mTmpNeedsZBoostIndexes.size(); |
| for (int i = 0; i < zBoostSize; i++) { |
| final ActivityStack stack = stacks.get(mTmpNeedsZBoostIndexes.get(i)); |
| stack.assignLayer(t, startLayer++); |
| if (normalStacks) { |
| startLayer = adjustNormalStackLayer(stack, startLayer); |
| } |
| } |
| return startLayer; |
| } |
| |
| @Override |
| SurfaceControl getAppAnimationLayer(@AnimationLayer int animationLayer) { |
| switch (animationLayer) { |
| case ANIMATION_LAYER_BOOSTED: |
| return mBoostedAppAnimationLayer; |
| case ANIMATION_LAYER_HOME: |
| return mHomeAppAnimationLayer; |
| case ANIMATION_LAYER_STANDARD: |
| default: |
| return mAppAnimationLayer; |
| } |
| } |
| |
| SurfaceControl getSplitScreenDividerAnchor() { |
| return mSplitScreenDividerAnchor; |
| } |
| |
| @Override |
| void onParentChanged(ConfigurationContainer newParent, ConfigurationContainer oldParent) { |
| if (getParent() != null) { |
| super.onParentChanged(newParent, oldParent, () -> { |
| mAppAnimationLayer = makeChildSurface(null) |
| .setName("animationLayer") |
| .setCallsite("TaskDisplayArea.onParentChanged") |
| .build(); |
| mBoostedAppAnimationLayer = makeChildSurface(null) |
| .setName("boostedAnimationLayer") |
| .setCallsite("TaskDisplayArea.onParentChanged") |
| .build(); |
| mHomeAppAnimationLayer = makeChildSurface(null) |
| .setName("homeAnimationLayer") |
| .setCallsite("TaskDisplayArea.onParentChanged") |
| .build(); |
| mSplitScreenDividerAnchor = makeChildSurface(null) |
| .setName("splitScreenDividerAnchor") |
| .setCallsite("TaskDisplayArea.onParentChanged") |
| .build(); |
| getSyncTransaction() |
| .show(mAppAnimationLayer) |
| .show(mBoostedAppAnimationLayer) |
| .show(mHomeAppAnimationLayer) |
| .show(mSplitScreenDividerAnchor); |
| }); |
| } else { |
| super.onParentChanged(newParent, oldParent); |
| mWmService.mTransactionFactory.get() |
| .remove(mAppAnimationLayer) |
| .remove(mBoostedAppAnimationLayer) |
| .remove(mHomeAppAnimationLayer) |
| .remove(mSplitScreenDividerAnchor) |
| .apply(); |
| mAppAnimationLayer = null; |
| mBoostedAppAnimationLayer = null; |
| mHomeAppAnimationLayer = null; |
| mSplitScreenDividerAnchor = null; |
| } |
| } |
| |
| void onStackRemoved(ActivityStack stack) { |
| if (ActivityTaskManagerDebugConfig.DEBUG_STACK) { |
| Slog.v(TAG_STACK, "removeStack: detaching " + stack + " from displayId=" |
| + mDisplayContent.mDisplayId); |
| } |
| if (mPreferredTopFocusableStack == stack) { |
| mPreferredTopFocusableStack = null; |
| } |
| mDisplayContent.releaseSelfIfNeeded(); |
| onStackOrderChanged(stack); |
| } |
| |
| void resetPreferredTopFocusableStackIfBelow(Task task) { |
| if (mPreferredTopFocusableStack != null |
| && mPreferredTopFocusableStack.compareTo(task) < 0) { |
| mPreferredTopFocusableStack = null; |
| } |
| } |
| |
| void positionStackAt(int position, ActivityStack child, boolean includingParents) { |
| positionChildAt(position, child, includingParents); |
| mDisplayContent.layoutAndAssignWindowLayersIfNeeded(); |
| } |
| |
| void positionStackAtTop(ActivityStack stack, boolean includingParents) { |
| positionStackAtTop(stack, includingParents, null /* updateLastFocusedStackReason */); |
| } |
| |
| void positionStackAtTop(ActivityStack stack, boolean includingParents, |
| String updateLastFocusedStackReason) { |
| positionStackAt(stack, getStackCount(), includingParents, |
| updateLastFocusedStackReason); |
| } |
| |
| void positionStackAtBottom(ActivityStack stack) { |
| positionStackAtBottom(stack, null /* updateLastFocusedStackReason */); |
| } |
| |
| void positionStackAtBottom(ActivityStack stack, String updateLastFocusedStackReason) { |
| positionStackAt(stack, 0, false /* includingParents */, |
| updateLastFocusedStackReason); |
| } |
| |
| void positionStackAt(ActivityStack stack, int position) { |
| positionStackAt(stack, position, false /* includingParents */, |
| null /* updateLastFocusedStackReason */); |
| } |
| |
| void positionStackAt(ActivityStack stack, int position, boolean includingParents, |
| String updateLastFocusedStackReason) { |
| // TODO: Keep in sync with WindowContainer.positionChildAt(), once we change that to adjust |
| // the position internally, also update the logic here |
| final ActivityStack prevFocusedStack = updateLastFocusedStackReason != null |
| ? getFocusedStack() : null; |
| final boolean wasContained = mChildren.contains(stack); |
| if (mDisplayContent.mSingleTaskInstance && getStackCount() == 1 && !wasContained) { |
| throw new IllegalStateException( |
| "positionStackAt: Can only have one task on display=" + this); |
| } |
| |
| // Since positionChildAt() is called during the creation process of pinned stacks, |
| // ActivityStack#getStack() can be null. |
| positionStackAt(position, stack, includingParents); |
| |
| if (updateLastFocusedStackReason != null) { |
| final ActivityStack currentFocusedStack = getFocusedStack(); |
| if (currentFocusedStack != prevFocusedStack) { |
| mLastFocusedStack = prevFocusedStack; |
| EventLogTags.writeWmFocusedStack(mRootWindowContainer.mCurrentUser, |
| mDisplayContent.mDisplayId, |
| currentFocusedStack == null ? -1 : currentFocusedStack.getRootTaskId(), |
| mLastFocusedStack == null ? -1 : mLastFocusedStack.getRootTaskId(), |
| updateLastFocusedStackReason); |
| } |
| } |
| |
| onStackOrderChanged(stack); |
| } |
| |
| /** |
| * Moves/reparents `task` to the back of whatever container the home stack is in. This is for |
| * when we just want to move a task to "the back" vs. a specific place. The primary use-case |
| * is to make sure that moved-to-back apps go into secondary split when in split-screen mode. |
| */ |
| void positionTaskBehindHome(ActivityStack task) { |
| final ActivityStack home = getOrCreateRootHomeTask(); |
| final WindowContainer homeParent = home.getParent(); |
| final Task homeParentTask = homeParent != null ? homeParent.asTask() : null; |
| if (homeParentTask == null) { |
| // reparent throws if parent didn't change... |
| if (task.getParent() == this) { |
| positionStackAtBottom(task); |
| } else { |
| task.reparent(this, false /* onTop */); |
| } |
| } else if (homeParentTask == task.getParent()) { |
| // Apparently reparent early-outs if same stack, so we have to explicitly reorder. |
| ((ActivityStack) homeParentTask).positionChildAtBottom(task); |
| } else { |
| task.reparent((ActivityStack) homeParentTask, false /* toTop */, |
| Task.REPARENT_LEAVE_STACK_IN_PLACE, false /* animate */, |
| false /* deferResume */, "positionTaskBehindHome"); |
| } |
| } |
| |
| ActivityStack getStack(int rootTaskId) { |
| for (int i = getStackCount() - 1; i >= 0; --i) { |
| final ActivityStack stack = getStackAt(i); |
| if (stack.getRootTaskId() == rootTaskId) { |
| return stack; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns an existing stack compatible with the windowing mode and activity type or creates one |
| * if a compatible stack doesn't exist. |
| * @see #getOrCreateStack(int, int, boolean, Intent, Task) |
| */ |
| ActivityStack getOrCreateStack(int windowingMode, int activityType, boolean onTop) { |
| return getOrCreateStack(windowingMode, activityType, onTop, null /* intent */, |
| null /* candidateTask */); |
| } |
| |
| /** |
| * When two level tasks are required for given windowing mode and activity type, returns an |
| * existing compatible root task or creates a new one. |
| * For one level task, the candidate task would be reused to also be the root task or create |
| * a new root task if no candidate task. |
| * @see #getStack(int, int) |
| * @see #createStack(int, int, boolean) |
| */ |
| ActivityStack getOrCreateStack(int windowingMode, int activityType, boolean onTop, |
| Intent intent, Task candidateTask) { |
| // Need to pass in a determined windowing mode to see if a new stack should be created, |
| // so use its parent's windowing mode if it is undefined. |
| if (!alwaysCreateStack( |
| windowingMode != WINDOWING_MODE_UNDEFINED ? windowingMode : getWindowingMode(), |
| activityType)) { |
| ActivityStack stack = getStack(windowingMode, activityType); |
| if (stack != null) { |
| return stack; |
| } |
| } else if (candidateTask != null) { |
| final ActivityStack stack = (ActivityStack) candidateTask; |
| final int position = onTop ? POSITION_TOP : POSITION_BOTTOM; |
| Task launchRootTask = updateLaunchRootTask(windowingMode); |
| |
| if (launchRootTask != null) { |
| if (stack.getParent() == null) { |
| launchRootTask.addChild(stack, position); |
| } else if (stack.getParent() != launchRootTask) { |
| stack.reparent(launchRootTask, position); |
| } |
| } else if (stack.getDisplayArea() != this || !stack.isRootTask()) { |
| if (stack.getParent() == null) { |
| addChild(stack, position); |
| } else { |
| stack.reparent(this, onTop); |
| } |
| } |
| // Update windowing mode if necessary, e.g. moving a pinned task to fullscreen. |
| if (candidateTask.getWindowingMode() != windowingMode) { |
| candidateTask.setWindowingMode(windowingMode); |
| } |
| return stack; |
| } |
| return createStack(windowingMode, activityType, onTop, null /*info*/, intent, |
| false /* createdByOrganizer */); |
| } |
| |
| /** |
| * Returns an existing stack compatible with the input params or creates one |
| * if a compatible stack doesn't exist. |
| * @see #getOrCreateStack(int, int, boolean) |
| */ |
| ActivityStack getOrCreateStack(@Nullable ActivityRecord r, |
| @Nullable ActivityOptions options, @Nullable Task candidateTask, int activityType, |
| boolean onTop) { |
| // First preference is the windowing mode in the activity options if set. |
| int windowingMode = (options != null) |
| ? options.getLaunchWindowingMode() : WINDOWING_MODE_UNDEFINED; |
| // Validate that our desired windowingMode will work under the current conditions. |
| // UNDEFINED windowing mode is a valid result and means that the new stack will inherit |
| // it's display's windowing mode. |
| windowingMode = validateWindowingMode(windowingMode, r, candidateTask, activityType); |
| return getOrCreateStack(windowingMode, activityType, onTop, null /* intent */, |
| candidateTask); |
| } |
| |
| @VisibleForTesting |
| int getNextStackId() { |
| return mAtmService.mStackSupervisor.getNextTaskIdForUser(); |
| } |
| |
| ActivityStack createStack(int windowingMode, int activityType, boolean onTop) { |
| return createStack(windowingMode, activityType, onTop, null /* info */, null /* intent */, |
| false /* createdByOrganizer */); |
| } |
| |
| /** |
| * Creates a stack matching the input windowing mode and activity type on this display. |
| * @param windowingMode The windowing mode the stack should be created in. If |
| * {@link WindowConfiguration#WINDOWING_MODE_UNDEFINED} then the stack will |
| * inherit its parent's windowing mode. |
| * @param activityType The activityType the stack should be created in. If |
| * {@link WindowConfiguration#ACTIVITY_TYPE_UNDEFINED} then the stack will |
| * be created in {@link WindowConfiguration#ACTIVITY_TYPE_STANDARD}. |
| * @param onTop If true the stack will be created at the top of the display, else at the bottom. |
| * @param info The started activity info. |
| * @param intent The intent that started this task. |
| * @param createdByOrganizer @{code true} if this is created by task organizer, @{code false} |
| * otherwise. |
| * @return The newly created stack. |
| */ |
| ActivityStack createStack(int windowingMode, int activityType, boolean onTop, ActivityInfo info, |
| Intent intent, boolean createdByOrganizer) { |
| if (mDisplayContent.mSingleTaskInstance && getStackCount() > 0) { |
| // Create stack on default display instead since this display can only contain 1 stack. |
| // TODO: Kinda a hack, but better that having the decision at each call point. Hoping |
| // this goes away once ActivityView is no longer using virtual displays. |
| return mRootWindowContainer.getDefaultTaskDisplayArea().createStack( |
| windowingMode, activityType, onTop, info, intent, createdByOrganizer); |
| } |
| |
| if (activityType == ACTIVITY_TYPE_UNDEFINED && !createdByOrganizer) { |
| // Can't have an undefined stack type yet...so re-map to standard. Anyone that wants |
| // anything else should be passing it in anyways...except for the task organizer. |
| activityType = ACTIVITY_TYPE_STANDARD; |
| } |
| |
| if (activityType != ACTIVITY_TYPE_STANDARD && activityType != ACTIVITY_TYPE_UNDEFINED) { |
| // For now there can be only one stack of a particular non-standard activity type on a |
| // display. So, get that ignoring whatever windowing mode it is currently in. |
| ActivityStack stack = getStack(WINDOWING_MODE_UNDEFINED, activityType); |
| if (stack != null) { |
| throw new IllegalArgumentException("Stack=" + stack + " of activityType=" |
| + activityType + " already on display=" + this + ". Can't have multiple."); |
| } |
| } |
| |
| if (!isWindowingModeSupported(windowingMode, mAtmService.mSupportsMultiWindow, |
| mAtmService.mSupportsSplitScreenMultiWindow, |
| mAtmService.mSupportsFreeformWindowManagement, |
| mAtmService.mSupportsPictureInPicture, activityType)) { |
| throw new IllegalArgumentException("Can't create stack for unsupported windowingMode=" |
| + windowingMode); |
| } |
| |
| if (windowingMode == WINDOWING_MODE_PINNED && getRootPinnedTask() != null) { |
| // Only 1 stack can be PINNED at a time, so dismiss the existing one |
| getRootPinnedTask().dismissPip(); |
| } |
| |
| final int stackId = getNextStackId(); |
| return createStackUnchecked(windowingMode, activityType, stackId, onTop, info, intent, |
| createdByOrganizer); |
| } |
| |
| /** @return the root task to create the next task in. */ |
| private Task updateLaunchRootTask(int windowingMode) { |
| if (!isSplitScreenWindowingMode(windowingMode)) { |
| // Only split-screen windowing modes can do this currently... |
| return null; |
| } |
| for (int i = getStackCount() - 1; i >= 0; --i) { |
| final Task t = getStackAt(i); |
| if (!t.mCreatedByOrganizer || t.getRequestedOverrideWindowingMode() != windowingMode) { |
| continue; |
| } |
| // If not already set, pick a launch root which is not the one we are launching into. |
| if (mLaunchRootTask == null) { |
| for (int j = 0, n = getStackCount(); j < n; ++j) { |
| final Task tt = getStackAt(j); |
| if (tt.mCreatedByOrganizer && tt != t) { |
| mLaunchRootTask = tt; |
| break; |
| } |
| } |
| } |
| return t; |
| } |
| return mLaunchRootTask; |
| } |
| |
| @VisibleForTesting |
| ActivityStack createStackUnchecked(int windowingMode, int activityType, int stackId, |
| boolean onTop, ActivityInfo info, Intent intent, boolean createdByOrganizer) { |
| if (windowingMode == WINDOWING_MODE_PINNED && activityType != ACTIVITY_TYPE_STANDARD) { |
| throw new IllegalArgumentException("Stack with windowing mode cannot with non standard " |
| + "activity type."); |
| } |
| if (info == null) { |
| info = new ActivityInfo(); |
| info.applicationInfo = new ApplicationInfo(); |
| } |
| |
| // Task created by organizer are added as root. |
| Task launchRootTask = createdByOrganizer ? null : updateLaunchRootTask(windowingMode); |
| if (launchRootTask != null) { |
| // Since this stack will be put into a root task, its windowingMode will be inherited. |
| windowingMode = WINDOWING_MODE_UNDEFINED; |
| } |
| |
| final ActivityStack stack = new ActivityStack(mAtmService, stackId, activityType, |
| info, intent, createdByOrganizer); |
| if (launchRootTask != null) { |
| launchRootTask.addChild(stack, onTop ? POSITION_TOP : POSITION_BOTTOM); |
| if (onTop) { |
| positionStackAtTop((ActivityStack) launchRootTask, false /* includingParents */); |
| } |
| } else { |
| addChild(stack, onTop ? POSITION_TOP : POSITION_BOTTOM); |
| stack.setWindowingMode(windowingMode, true /* creating */); |
| } |
| return stack; |
| } |
| |
| /** |
| * Get the preferred focusable stack in priority. If the preferred stack does not exist, find a |
| * focusable and visible stack from the top of stacks in this display. |
| */ |
| ActivityStack getFocusedStack() { |
| if (mPreferredTopFocusableStack != null) { |
| return mPreferredTopFocusableStack; |
| } |
| |
| for (int i = getStackCount() - 1; i >= 0; --i) { |
| final ActivityStack stack = getStackAt(i); |
| if (stack.isFocusableAndVisible()) { |
| return stack; |
| } |
| } |
| |
| return null; |
| } |
| |
| ActivityStack getNextFocusableStack(ActivityStack currentFocus, boolean ignoreCurrent) { |
| final int currentWindowingMode = currentFocus != null |
| ? currentFocus.getWindowingMode() : WINDOWING_MODE_UNDEFINED; |
| |
| ActivityStack candidate = null; |
| for (int i = getStackCount() - 1; i >= 0; --i) { |
| final ActivityStack stack = getStackAt(i); |
| if (ignoreCurrent && stack == currentFocus) { |
| continue; |
| } |
| if (!stack.isFocusableAndVisible()) { |
| continue; |
| } |
| |
| if (currentWindowingMode == WINDOWING_MODE_SPLIT_SCREEN_SECONDARY |
| && candidate == null && stack.inSplitScreenPrimaryWindowingMode()) { |
| // If the currently focused stack is in split-screen secondary we save off the |
| // top primary split-screen stack as a candidate for focus because we might |
| // prefer focus to move to an other stack to avoid primary split-screen stack |
| // overlapping with a fullscreen stack when a fullscreen stack is higher in z |
| // than the next split-screen stack. Assistant stack, I am looking at you... |
| // We only move the focus to the primary-split screen stack if there isn't a |
| // better alternative. |
| candidate = stack; |
| continue; |
| } |
| if (candidate != null && stack.inSplitScreenSecondaryWindowingMode()) { |
| // Use the candidate stack since we are now at the secondary split-screen. |
| return candidate; |
| } |
| return stack; |
| } |
| return candidate; |
| } |
| |
| ActivityRecord getFocusedActivity() { |
| final ActivityStack focusedStack = getFocusedStack(); |
| if (focusedStack == null) { |
| return null; |
| } |
| // TODO(b/111541062): Move this into ActivityStack#getResumedActivity() |
| // Check if the focused stack has the resumed activity |
| ActivityRecord resumedActivity = focusedStack.getResumedActivity(); |
| if (resumedActivity == null || resumedActivity.app == null) { |
| // If there is no registered resumed activity in the stack or it is not running - |
| // try to use previously resumed one. |
| resumedActivity = focusedStack.mPausingActivity; |
| if (resumedActivity == null || resumedActivity.app == null) { |
| // If previously resumed activity doesn't work either - find the topmost running |
| // activity that can be focused. |
| resumedActivity = focusedStack.topRunningActivity(true /* focusableOnly */); |
| } |
| } |
| return resumedActivity; |
| } |
| |
| ActivityStack getLastFocusedStack() { |
| return mLastFocusedStack; |
| } |
| |
| boolean allResumedActivitiesComplete() { |
| for (int stackNdx = getStackCount() - 1; stackNdx >= 0; --stackNdx) { |
| final ActivityRecord r = getStackAt(stackNdx).getResumedActivity(); |
| if (r != null && !r.isState(RESUMED)) { |
| return false; |
| } |
| } |
| final ActivityStack currentFocusedStack = getFocusedStack(); |
| if (ActivityTaskManagerDebugConfig.DEBUG_STACK) { |
| Slog.d(TAG_STACK, "allResumedActivitiesComplete: mLastFocusedStack changing from=" |
| + mLastFocusedStack + " to=" + currentFocusedStack); |
| } |
| mLastFocusedStack = currentFocusedStack; |
| return true; |
| } |
| |
| /** |
| * Pause all activities in either all of the stacks or just the back stacks. This is done before |
| * resuming a new activity and to make sure that previously active activities are |
| * paused in stacks that are no longer visible or in pinned windowing mode. This does not |
| * pause activities in visible stacks, so if an activity is launched within the same stack/task, |
| * then we should explicitly pause that stack's top activity. |
| * @param userLeaving Passed to pauseActivity() to indicate whether to call onUserLeaving(). |
| * @param resuming The resuming activity. |
| * @return {@code true} if any activity was paused as a result of this call. |
| */ |
| boolean pauseBackStacks(boolean userLeaving, ActivityRecord resuming) { |
| boolean someActivityPaused = false; |
| for (int stackNdx = getStackCount() - 1; stackNdx >= 0; --stackNdx) { |
| final ActivityStack stack = getStackAt(stackNdx); |
| final ActivityRecord resumedActivity = stack.getResumedActivity(); |
| if (resumedActivity != null |
| && (stack.getVisibility(resuming) != STACK_VISIBILITY_VISIBLE |
| || !stack.isTopActivityFocusable())) { |
| if (DEBUG_STATES) { |
| Slog.d(TAG_STATES, "pauseBackStacks: stack=" + stack |
| + " mResumedActivity=" + resumedActivity); |
| } |
| someActivityPaused |= stack.startPausingLocked(userLeaving, false /* uiSleeping*/, |
| resuming); |
| } |
| } |
| return someActivityPaused; |
| } |
| |
| /** |
| * Find task for putting the Activity in. |
| */ |
| void findTaskLocked(final ActivityRecord r, final boolean isPreferredDisplayArea, |
| RootWindowContainer.FindTaskResult result) { |
| mTmpFindTaskResult.clear(); |
| for (int stackNdx = getStackCount() - 1; stackNdx >= 0; --stackNdx) { |
| final ActivityStack stack = getStackAt(stackNdx); |
| if (!r.hasCompatibleActivityType(stack) && stack.isLeafTask()) { |
| if (DEBUG_TASKS) { |
| Slog.d(TAG_TASKS, "Skipping stack: (mismatch activity/stack) " + stack); |
| } |
| continue; |
| } |
| |
| mTmpFindTaskResult.process(r, stack); |
| // It is possible to have tasks in multiple stacks with the same root affinity, so |
| // we should keep looking after finding an affinity match to see if there is a |
| // better match in another stack. Also, task affinity isn't a good enough reason |
| // to target a display which isn't the source of the intent, so skip any affinity |
| // matches not on the specified display. |
| if (mTmpFindTaskResult.mRecord != null) { |
| if (mTmpFindTaskResult.mIdealMatch) { |
| result.setTo(mTmpFindTaskResult); |
| return; |
| } else if (isPreferredDisplayArea) { |
| // Note: since the traversing through the stacks is top down, the floating |
| // tasks should always have lower priority than any affinity-matching tasks |
| // in the fullscreen stacks |
| result.setTo(mTmpFindTaskResult); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Removes stacks in the input windowing modes from the system if they are of activity type |
| * ACTIVITY_TYPE_STANDARD or ACTIVITY_TYPE_UNDEFINED |
| */ |
| void removeStacksInWindowingModes(int... windowingModes) { |
| if (windowingModes == null || windowingModes.length == 0) { |
| return; |
| } |
| |
| // Collect the stacks that are necessary to be removed instead of performing the removal |
| // by looping mStacks, so that we don't miss any stacks after the stack size changed or |
| // stacks reordered. |
| final ArrayList<ActivityStack> stacks = new ArrayList<>(); |
| for (int j = windowingModes.length - 1; j >= 0; --j) { |
| final int windowingMode = windowingModes[j]; |
| for (int i = getStackCount() - 1; i >= 0; --i) { |
| final ActivityStack stack = getStackAt(i); |
| if (!stack.isActivityTypeStandardOrUndefined()) { |
| continue; |
| } |
| if (stack.getWindowingMode() != windowingMode) { |
| continue; |
| } |
| stacks.add(stack); |
| } |
| } |
| |
| for (int i = stacks.size() - 1; i >= 0; --i) { |
| mRootWindowContainer.mStackSupervisor.removeStack(stacks.get(i)); |
| } |
| } |
| |
| void removeStacksWithActivityTypes(int... activityTypes) { |
| if (activityTypes == null || activityTypes.length == 0) { |
| return; |
| } |
| |
| // Collect the stacks that are necessary to be removed instead of performing the removal |
| // by looping mStacks, so that we don't miss any stacks after the stack size changed or |
| // stacks reordered. |
| final ArrayList<ActivityStack> stacks = new ArrayList<>(); |
| for (int j = activityTypes.length - 1; j >= 0; --j) { |
| final int activityType = activityTypes[j]; |
| for (int i = getStackCount() - 1; i >= 0; --i) { |
| final ActivityStack stack = getStackAt(i); |
| // Collect the root tasks that are currently being organized. |
| if (stack.mCreatedByOrganizer) { |
| for (int k = stack.getChildCount() - 1; k >= 0; --k) { |
| final ActivityStack childStack = (ActivityStack) stack.getChildAt(k); |
| if (childStack.getActivityType() == activityType) { |
| stacks.add(childStack); |
| } |
| } |
| } else if (stack.getActivityType() == activityType) { |
| stacks.add(stack); |
| } |
| } |
| } |
| |
| for (int i = stacks.size() - 1; i >= 0; --i) { |
| mRootWindowContainer.mStackSupervisor.removeStack(stacks.get(i)); |
| } |
| } |
| |
| void onSplitScreenModeDismissed() { |
| onSplitScreenModeDismissed(null /* toTop */); |
| } |
| |
| void onSplitScreenModeDismissed(ActivityStack toTop) { |
| mAtmService.deferWindowLayout(); |
| try { |
| mLaunchRootTask = null; |
| moveSplitScreenTasksToFullScreen(); |
| } finally { |
| final ActivityStack topFullscreenStack = toTop != null |
| ? toTop : getTopStackInWindowingMode(WINDOWING_MODE_FULLSCREEN); |
| final ActivityStack homeStack = getOrCreateRootHomeTask(); |
| if (homeStack != null && ((topFullscreenStack != null && !isTopStack(homeStack)) |
| || toTop != null)) { |
| // Whenever split-screen is dismissed we want the home stack directly behind the |
| // current top fullscreen stack so it shows up when the top stack is finished. |
| // Or, if the caller specified a stack to be on top after split-screen is dismissed. |
| // TODO: Would be better to use ActivityDisplay.positionChildAt() for this, however |
| // ActivityDisplay doesn't have a direct controller to WM side yet. We can switch |
| // once we have that. |
| homeStack.moveToFront("onSplitScreenModeDismissed"); |
| topFullscreenStack.moveToFront("onSplitScreenModeDismissed"); |
| } |
| mAtmService.continueWindowLayout(); |
| } |
| } |
| |
| private void moveSplitScreenTasksToFullScreen() { |
| final WindowContainerTransaction wct = new WindowContainerTransaction(); |
| mTmpTasks.clear(); |
| forAllTasks(task -> { |
| if (task.mCreatedByOrganizer && task.inSplitScreenWindowingMode() && task.hasChild()) { |
| mTmpTasks.add(task); |
| } |
| }); |
| |
| for (int i = mTmpTasks.size() - 1; i >= 0; i--) { |
| final Task root = mTmpTasks.get(i); |
| for (int j = 0; j < root.getChildCount(); j++) { |
| wct.reparent(root.getChildAt(j).mRemoteToken.toWindowContainerToken(), |
| null, true /* toTop */); |
| } |
| } |
| mAtmService.mWindowOrganizerController.applyTransaction(wct); |
| } |
| |
| /** |
| * Returns true if the {@param windowingMode} is supported based on other parameters passed in. |
| * @param windowingMode The windowing mode we are checking support for. |
| * @param supportsMultiWindow If we should consider support for multi-window mode in general. |
| * @param supportsSplitScreen If we should consider support for split-screen multi-window. |
| * @param supportsFreeform If we should consider support for freeform multi-window. |
| * @param supportsPip If we should consider support for picture-in-picture mutli-window. |
| * @param activityType The activity type under consideration. |
| * @return true if the windowing mode is supported. |
| */ |
| private boolean isWindowingModeSupported(int windowingMode, boolean supportsMultiWindow, |
| boolean supportsSplitScreen, boolean supportsFreeform, boolean supportsPip, |
| int activityType) { |
| |
| if (windowingMode == WINDOWING_MODE_UNDEFINED |
| || windowingMode == WINDOWING_MODE_FULLSCREEN) { |
| return true; |
| } |
| if (!supportsMultiWindow) { |
| return false; |
| } |
| |
| if (windowingMode == WINDOWING_MODE_MULTI_WINDOW) { |
| return true; |
| } |
| |
| if (windowingMode == WINDOWING_MODE_SPLIT_SCREEN_PRIMARY |
| || windowingMode == WINDOWING_MODE_SPLIT_SCREEN_SECONDARY) { |
| return supportsSplitScreen |
| && WindowConfiguration.supportSplitScreenWindowingMode(activityType); |
| } |
| |
| if (!supportsFreeform && windowingMode == WINDOWING_MODE_FREEFORM) { |
| return false; |
| } |
| |
| if (!supportsPip && windowingMode == WINDOWING_MODE_PINNED) { |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Resolves the windowing mode that an {@link ActivityRecord} would be in if started on this |
| * display with the provided parameters. |
| * |
| * @param r The ActivityRecord in question. |
| * @param options Options to start with. |
| * @param task The task within-which the activity would start. |
| * @param activityType The type of activity to start. |
| * @return The resolved (not UNDEFINED) windowing-mode that the activity would be in. |
| */ |
| int resolveWindowingMode(@Nullable ActivityRecord r, @Nullable ActivityOptions options, |
| @Nullable Task task, int activityType) { |
| |
| // First preference if the windowing mode in the activity options if set. |
| int windowingMode = (options != null) |
| ? options.getLaunchWindowingMode() : WINDOWING_MODE_UNDEFINED; |
| |
| // If windowing mode is unset, then next preference is the candidate task, then the |
| // activity record. |
| if (windowingMode == WINDOWING_MODE_UNDEFINED) { |
| if (task != null) { |
| windowingMode = task.getWindowingMode(); |
| } |
| if (windowingMode == WINDOWING_MODE_UNDEFINED && r != null) { |
| windowingMode = r.getWindowingMode(); |
| } |
| if (windowingMode == WINDOWING_MODE_UNDEFINED) { |
| // Use the display's windowing mode. |
| windowingMode = getWindowingMode(); |
| } |
| } |
| windowingMode = validateWindowingMode(windowingMode, r, task, activityType); |
| return windowingMode != WINDOWING_MODE_UNDEFINED |
| ? windowingMode : WINDOWING_MODE_FULLSCREEN; |
| } |
| |
| /** |
| * Check if the requested windowing-mode is appropriate for the specified task and/or activity |
| * on this display. |
| * |
| * @param windowingMode The windowing-mode to validate. |
| * @param r The {@link ActivityRecord} to check against. |
| * @param task The {@link Task} to check against. |
| * @param activityType An activity type. |
| * @return {@code true} if windowingMode is valid, {@code false} otherwise. |
| */ |
| boolean isValidWindowingMode(int windowingMode, @Nullable ActivityRecord r, @Nullable Task task, |
| int activityType) { |
| // Make sure the windowing mode we are trying to use makes sense for what is supported. |
| boolean supportsMultiWindow = mAtmService.mSupportsMultiWindow; |
| boolean supportsSplitScreen = mAtmService.mSupportsSplitScreenMultiWindow; |
| boolean supportsFreeform = mAtmService.mSupportsFreeformWindowManagement; |
| boolean supportsPip = mAtmService.mSupportsPictureInPicture; |
| if (supportsMultiWindow) { |
| if (task != null) { |
| supportsMultiWindow = task.isResizeable(); |
| supportsSplitScreen = task.supportsSplitScreenWindowingMode(); |
| // TODO: Do we need to check for freeform and Pip support here? |
| } else if (r != null) { |
| supportsMultiWindow = r.isResizeable(); |
| supportsSplitScreen = r.supportsSplitScreenWindowingMode(); |
| supportsFreeform = r.supportsFreeform(); |
| supportsPip = r.supportsPictureInPicture(); |
| } |
| } |
| |
| return windowingMode != WINDOWING_MODE_UNDEFINED |
| && isWindowingModeSupported(windowingMode, supportsMultiWindow, supportsSplitScreen, |
| supportsFreeform, supportsPip, activityType); |
| } |
| |
| /** |
| * Check that the requested windowing-mode is appropriate for the specified task and/or activity |
| * on this display. |
| * |
| * @param windowingMode The windowing-mode to validate. |
| * @param r The {@link ActivityRecord} to check against. |
| * @param task The {@link Task} to check against. |
| * @param activityType An activity type. |
| * @return The provided windowingMode or the closest valid mode which is appropriate. |
| */ |
| int validateWindowingMode(int windowingMode, @Nullable ActivityRecord r, @Nullable Task task, |
| int activityType) { |
| final boolean inSplitScreenMode = isSplitScreenModeActivated(); |
| if (!inSplitScreenMode && windowingMode == WINDOWING_MODE_SPLIT_SCREEN_SECONDARY) { |
| // Switch to the display's windowing mode if we are not in split-screen mode and we are |
| // trying to launch in split-screen secondary. |
| windowingMode = WINDOWING_MODE_UNDEFINED; |
| } else if (inSplitScreenMode && windowingMode == WINDOWING_MODE_UNDEFINED) { |
| windowingMode = WINDOWING_MODE_SPLIT_SCREEN_SECONDARY; |
| } |
| if (!isValidWindowingMode(windowingMode, r, task, activityType)) { |
| return WINDOWING_MODE_UNDEFINED; |
| } |
| return windowingMode; |
| } |
| |
| boolean isTopStack(ActivityStack stack) { |
| return stack == getTopStack(); |
| } |
| |
| boolean isTopNotPinnedStack(ActivityStack stack) { |
| for (int i = getStackCount() - 1; i >= 0; --i) { |
| final ActivityStack current = getStackAt(i); |
| if (!current.inPinnedWindowingMode()) { |
| return current == stack; |
| } |
| } |
| return false; |
| } |
| |
| ActivityRecord topRunningActivity() { |
| return topRunningActivity(false /* considerKeyguardState */); |
| } |
| |
| /** |
| * Returns the top running activity in the focused stack. In the case the focused stack has no |
| * such activity, the next focusable stack on this display is returned. |
| * |
| * @param considerKeyguardState Indicates whether the locked state should be considered. if |
| * {@code true} and the keyguard is locked, only activities that |
| * can be shown on top of the keyguard will be considered. |
| * @return The top running activity. {@code null} if none is available. |
| */ |
| ActivityRecord topRunningActivity(boolean considerKeyguardState) { |
| ActivityRecord topRunning = null; |
| final ActivityStack focusedStack = getFocusedStack(); |
| if (focusedStack != null) { |
| topRunning = focusedStack.topRunningActivity(); |
| } |
| |
| // Look in other focusable stacks. |
| if (topRunning == null) { |
| for (int i = getStackCount() - 1; i >= 0; --i) { |
| final ActivityStack stack = getStackAt(i); |
| // Only consider focusable stacks other than the current focused one. |
| if (stack == focusedStack || !stack.isTopActivityFocusable()) { |
| continue; |
| } |
| topRunning = stack.topRunningActivity(); |
| if (topRunning != null) { |
| break; |
| } |
| } |
| } |
| |
| // This activity can be considered the top running activity if we are not considering |
| // the locked state, the keyguard isn't locked, or we can show when locked. |
| if (topRunning != null && considerKeyguardState |
| && mRootWindowContainer.mStackSupervisor.getKeyguardController() |
| .isKeyguardLocked() |
| && !topRunning.canShowWhenLocked()) { |
| return null; |
| } |
| |
| return topRunning; |
| } |
| |
| protected int getStackCount() { |
| return mChildren.size(); |
| } |
| |
| protected ActivityStack getStackAt(int index) { |
| return mChildren.get(index); |
| } |
| |
| @Nullable |
| ActivityStack getOrCreateRootHomeTask() { |
| return getOrCreateRootHomeTask(false /* onTop */); |
| } |
| |
| /** |
| * Returns the existing home stack or creates and returns a new one if it should exist for the |
| * display. |
| * @param onTop Only be used when there is no existing home stack. If true the home stack will |
| * be created at the top of the display, else at the bottom. |
| */ |
| @Nullable |
| ActivityStack getOrCreateRootHomeTask(boolean onTop) { |
| ActivityStack homeTask = getRootHomeTask(); |
| if (homeTask == null && mDisplayContent.supportsSystemDecorations()) { |
| homeTask = createStack(WINDOWING_MODE_UNDEFINED, ACTIVITY_TYPE_HOME, onTop); |
| } |
| return homeTask; |
| } |
| |
| boolean isSplitScreenModeActivated() { |
| Task task = getRootSplitScreenPrimaryTask(); |
| return task != null && task.hasChild(); |
| } |
| |
| /** |
| * Returns the topmost stack on the display that is compatible with the input windowing mode. |
| * Null is no compatible stack on the display. |
| */ |
| ActivityStack getTopStackInWindowingMode(int windowingMode) { |
| return getStack(windowingMode, ACTIVITY_TYPE_UNDEFINED); |
| } |
| |
| void moveHomeStackToFront(String reason) { |
| final ActivityStack homeStack = getOrCreateRootHomeTask(); |
| if (homeStack != null) { |
| homeStack.moveToFront(reason); |
| } |
| } |
| |
| /** |
| * Moves the focusable home activity to top. If there is no such activity, the home stack will |
| * still move to top. |
| */ |
| void moveHomeActivityToTop(String reason) { |
| final ActivityRecord top = getHomeActivity(); |
| if (top == null) { |
| moveHomeStackToFront(reason); |
| return; |
| } |
| top.moveFocusableActivityToTop(reason); |
| } |
| |
| @Nullable |
| ActivityRecord getHomeActivity() { |
| return getHomeActivityForUser(mRootWindowContainer.mCurrentUser); |
| } |
| |
| @Nullable |
| ActivityRecord getHomeActivityForUser(int userId) { |
| final ActivityStack homeStack = getRootHomeTask(); |
| if (homeStack == null) { |
| return null; |
| } |
| |
| final PooledPredicate p = PooledLambda.obtainPredicate( |
| TaskDisplayArea::isHomeActivityForUser, PooledLambda.__(ActivityRecord.class), |
| userId); |
| final ActivityRecord r = homeStack.getActivity(p); |
| p.recycle(); |
| return r; |
| } |
| |
| private static boolean isHomeActivityForUser(ActivityRecord r, int userId) { |
| return r.isActivityTypeHome() && (userId == UserHandle.USER_ALL || r.mUserId == userId); |
| } |
| |
| /** |
| * Adjusts the {@param stack} behind the last visible stack in the display if necessary. |
| * Generally used in conjunction with {@link #moveStackBehindStack}. |
| */ |
| // TODO(b/151575894): Remove special stack movement methods. |
| void moveStackBehindBottomMostVisibleStack(ActivityStack stack) { |
| if (stack.shouldBeVisible(null)) { |
| // Skip if the stack is already visible |
| return; |
| } |
| |
| final boolean isRootTask = stack.isRootTask(); |
| if (isRootTask) { |
| // Move the stack to the bottom to not affect the following visibility checks |
| positionStackAtBottom(stack); |
| } else { |
| stack.getParent().positionChildAt(POSITION_BOTTOM, stack, false /* includingParents */); |
| } |
| |
| // Find the next position where the stack should be placed |
| final int numStacks = isRootTask ? getStackCount() : stack.getParent().getChildCount(); |
| for (int stackNdx = 0; stackNdx < numStacks; stackNdx++) { |
| final ActivityStack s = isRootTask ? getStackAt(stackNdx) |
| : (ActivityStack) stack.getParent().getChildAt(stackNdx); |
| if (s == stack) { |
| continue; |
| } |
| final int winMode = s.getWindowingMode(); |
| final boolean isValidWindowingMode = winMode == WINDOWING_MODE_FULLSCREEN |
| || winMode == WINDOWING_MODE_SPLIT_SCREEN_SECONDARY; |
| if (s.shouldBeVisible(null) && isValidWindowingMode) { |
| // Move the provided stack to behind this stack |
| final int position = Math.max(0, stackNdx - 1); |
| if (isRootTask) { |
| positionStackAt(stack, position); |
| } else { |
| stack.getParent().positionChildAt(position, stack, false /*includingParents */); |
| } |
| break; |
| } |
| } |
| } |
| |
| /** |
| * Moves the {@param stack} behind the given {@param behindStack} if possible. If |
| * {@param behindStack} is not currently in the display, then then the stack is moved to the |
| * back. Generally used in conjunction with {@link #moveStackBehindBottomMostVisibleStack}. |
| */ |
| void moveStackBehindStack(ActivityStack stack, ActivityStack behindStack) { |
| if (behindStack == null || behindStack == stack) { |
| return; |
| } |
| |
| final WindowContainer parent = stack.getParent(); |
| if (parent == null || parent != behindStack.getParent()) { |
| return; |
| } |
| |
| // Note that positionChildAt will first remove the given stack before inserting into the |
| // list, so we need to adjust the insertion index to account for the removed index |
| // TODO: Remove this logic when WindowContainer.positionChildAt() is updated to adjust the |
| // position internally |
| final int stackIndex = parent.mChildren.indexOf(stack); |
| final int behindStackIndex = parent.mChildren.indexOf(behindStack); |
| final int insertIndex = stackIndex <= behindStackIndex |
| ? behindStackIndex - 1 : behindStackIndex; |
| final int position = Math.max(0, insertIndex); |
| if (stack.isRootTask()) { |
| positionStackAt(stack, position); |
| } else { |
| parent.positionChildAt(position, stack, false /* includingParents */); |
| } |
| } |
| |
| boolean hasPinnedTask() { |
| return getRootPinnedTask() != null; |
| } |
| |
| /** |
| * @return the stack currently above the {@param stack}. Can be null if the {@param stack} is |
| * already top-most. |
| */ |
| static ActivityStack getStackAbove(ActivityStack stack) { |
| final WindowContainer wc = stack.getParent(); |
| final int index = wc.mChildren.indexOf(stack) + 1; |
| return (index < wc.mChildren.size()) ? (ActivityStack) wc.mChildren.get(index) : null; |
| } |
| |
| /** Returns true if the stack in the windowing mode is visible. */ |
| boolean isStackVisible(int windowingMode) { |
| final ActivityStack stack = getTopStackInWindowingMode(windowingMode); |
| return stack != null && stack.isVisible(); |
| } |
| |
| void removeStack(ActivityStack stack) { |
| removeChild(stack); |
| } |
| |
| int getDisplayId() { |
| return mDisplayContent.getDisplayId(); |
| } |
| |
| boolean isRemoved() { |
| return mRemoved; |
| } |
| |
| /** |
| * Adds a listener to be notified whenever the stack order in the display changes. Currently |
| * only used by the {@link RecentsAnimation} to determine whether to interrupt and cancel the |
| * current animation when the system state changes. |
| */ |
| void registerStackOrderChangedListener(OnStackOrderChangedListener listener) { |
| if (!mStackOrderChangedCallbacks.contains(listener)) { |
| mStackOrderChangedCallbacks.add(listener); |
| } |
| } |
| |
| /** |
| * Removes a previously registered stack order change listener. |
| */ |
| void unregisterStackOrderChangedListener(OnStackOrderChangedListener listener) { |
| mStackOrderChangedCallbacks.remove(listener); |
| } |
| |
| /** |
| * Notifies of a stack order change |
| * @param stack The stack which triggered the order change |
| */ |
| void onStackOrderChanged(ActivityStack stack) { |
| for (int i = mStackOrderChangedCallbacks.size() - 1; i >= 0; i--) { |
| mStackOrderChangedCallbacks.get(i).onStackOrderChanged(stack); |
| } |
| } |
| |
| @Override |
| boolean canCreateRemoteAnimationTarget() { |
| return true; |
| } |
| |
| /** |
| * Callback for when the order of the stacks in the display changes. |
| */ |
| interface OnStackOrderChangedListener { |
| void onStackOrderChanged(ActivityStack stack); |
| } |
| |
| void ensureActivitiesVisible(ActivityRecord starting, int configChanges, |
| boolean preserveWindows, boolean notifyClients) { |
| mAtmService.mStackSupervisor.beginActivityVisibilityUpdate(); |
| try { |
| for (int stackNdx = getStackCount() - 1; stackNdx >= 0; --stackNdx) { |
| final ActivityStack stack = getStackAt(stackNdx); |
| stack.ensureActivitiesVisible(starting, configChanges, preserveWindows, |
| notifyClients); |
| } |
| } finally { |
| mAtmService.mStackSupervisor.endActivityVisibilityUpdate(); |
| } |
| } |
| |
| void prepareFreezingTaskBounds() { |
| for (int stackNdx = getChildCount() - 1; stackNdx >= 0; --stackNdx) { |
| final ActivityStack stack = getChildAt(stackNdx); |
| stack.prepareFreezingTaskBounds(); |
| } |
| } |
| |
| /** |
| * Removes the stacks in the node applying the content removal node from the display. |
| * @return last reparented stack, or {@code null} if the stacks had to be destroyed. |
| */ |
| ActivityStack remove() { |
| mPreferredTopFocusableStack = null; |
| // TODO(b/153090332): Allow setting content removal mode per task display area |
| final boolean destroyContentOnRemoval = mDisplayContent.shouldDestroyContentOnRemove(); |
| final TaskDisplayArea toDisplayArea = mRootWindowContainer.getDefaultTaskDisplayArea(); |
| ActivityStack lastReparentedStack = null; |
| |
| // Stacks could be reparented from the removed display area to other display area. After |
| // reparenting the last stack of the removed display area, the display area becomes ready to |
| // be released (no more ActivityStack-s). But, we cannot release it at that moment or the |
| // related WindowContainer will also be removed. So, we set display area as removed after |
| // reparenting stack finished. |
| // Keep the order from bottom to top. |
| int numStacks = getStackCount(); |
| |
| final boolean splitScreenActivated = toDisplayArea.isSplitScreenModeActivated(); |
| final ActivityStack rootStack = splitScreenActivated ? toDisplayArea |
| .getTopStackInWindowingMode(WINDOWING_MODE_SPLIT_SCREEN_SECONDARY) : null; |
| for (int stackNdx = 0; stackNdx < numStacks; stackNdx++) { |
| final ActivityStack stack = getStackAt(stackNdx); |
| // Always finish non-standard type stacks. |
| if (destroyContentOnRemoval || !stack.isActivityTypeStandardOrUndefined()) { |
| stack.finishAllActivitiesImmediately(); |
| } else { |
| // Reparent the stack to the root task of secondary-split-screen or display area. |
| stack.reparent(stack.supportsSplitScreenWindowingMode() && rootStack != null |
| ? rootStack : toDisplayArea, POSITION_TOP); |
| |
| // Set the windowing mode to undefined by default to let the stack inherited the |
| // windowing mode. |
| stack.setWindowingMode(WINDOWING_MODE_UNDEFINED); |
| lastReparentedStack = stack; |
| } |
| // Stacks may be removed from this display. Ensure each stack will be processed |
| // and the loop will end. |
| stackNdx -= numStacks - getStackCount(); |
| numStacks = getStackCount(); |
| } |
| if (lastReparentedStack != null && splitScreenActivated) { |
| if (!lastReparentedStack.supportsSplitScreenWindowingMode()) { |
| mAtmService.getTaskChangeNotificationController() |
| .notifyActivityDismissingDockedStack(); |
| toDisplayArea.onSplitScreenModeDismissed(lastReparentedStack); |
| } else if (rootStack != null) { |
| // update focus |
| rootStack.moveToFront("display-removed"); |
| } |
| } |
| |
| mRemoved = true; |
| |
| return lastReparentedStack; |
| } |
| |
| |
| @Override |
| void dump(PrintWriter pw, String prefix, boolean dumpAll) { |
| pw.println(prefix + "TaskDisplayArea " + getName()); |
| final String doublePrefix = prefix + " "; |
| super.dump(pw, doublePrefix, dumpAll); |
| if (mPreferredTopFocusableStack != null) { |
| pw.println(doublePrefix + "mPreferredTopFocusableStack=" + mPreferredTopFocusableStack); |
| } |
| if (mLastFocusedStack != null) { |
| pw.println(doublePrefix + "mLastFocusedStack=" + mLastFocusedStack); |
| } |
| final String triplePrefix = doublePrefix + " "; |
| pw.println(doublePrefix + "Application tokens in top down Z order:"); |
| for (int stackNdx = getChildCount() - 1; stackNdx >= 0; --stackNdx) { |
| final ActivityStack stack = getChildAt(stackNdx); |
| pw.println(doublePrefix + "* " + stack); |
| stack.dump(pw, triplePrefix, dumpAll); |
| } |
| } |
| } |
