| /* |
| * Copyright (C) 2014 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.systemui.recents.views; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.graphics.Canvas; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.os.Handler; |
| import android.util.ArraySet; |
| import android.util.AttributeSet; |
| import android.view.LayoutInflater; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.ViewPropertyAnimator; |
| import android.view.WindowInsets; |
| import android.view.animation.AnimationUtils; |
| import android.view.animation.Interpolator; |
| import android.widget.FrameLayout; |
| import com.android.internal.logging.MetricsLogger; |
| import android.widget.TextView; |
| import com.android.systemui.R; |
| import com.android.systemui.recents.Recents; |
| import com.android.systemui.recents.RecentsActivity; |
| import com.android.systemui.recents.RecentsActivityLaunchState; |
| import com.android.systemui.recents.RecentsAppWidgetHostView; |
| import com.android.systemui.recents.RecentsConfiguration; |
| import com.android.systemui.recents.RecentsDebugFlags; |
| import com.android.systemui.recents.events.EventBus; |
| import com.android.systemui.recents.events.activity.CancelEnterRecentsWindowAnimationEvent; |
| import com.android.systemui.recents.events.activity.DebugFlagsChangedEvent; |
| import com.android.systemui.recents.events.activity.DismissRecentsToHomeAnimationStarted; |
| import com.android.systemui.recents.events.activity.HideHistoryButtonEvent; |
| import com.android.systemui.recents.events.activity.HideHistoryEvent; |
| import com.android.systemui.recents.events.activity.LaunchTaskEvent; |
| import com.android.systemui.recents.events.activity.ShowHistoryButtonEvent; |
| import com.android.systemui.recents.events.activity.ShowHistoryEvent; |
| import com.android.systemui.recents.events.activity.TaskStackUpdatedEvent; |
| import com.android.systemui.recents.events.component.RecentsVisibilityChangedEvent; |
| import com.android.systemui.recents.events.ui.DraggingInRecentsEndedEvent; |
| import com.android.systemui.recents.events.ui.DraggingInRecentsEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragDropTargetChangedEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragStartEvent; |
| import com.android.systemui.recents.misc.ReferenceCountedTrigger; |
| import com.android.systemui.recents.misc.SystemServicesProxy; |
| import com.android.systemui.recents.model.Task; |
| import com.android.systemui.recents.model.TaskStack; |
| import com.android.systemui.stackdivider.WindowManagerProxy; |
| import com.android.systemui.statusbar.FlingAnimationUtils; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static android.app.ActivityManager.StackId.INVALID_STACK_ID; |
| |
| /** |
| * This view is the the top level layout that contains TaskStacks (which are laid out according |
| * to their SpaceNode bounds. |
| */ |
| public class RecentsView extends FrameLayout { |
| |
| private static final String TAG = "RecentsView"; |
| private static final boolean DEBUG = false; |
| |
| private final Handler mHandler; |
| |
| private TaskStack mStack; |
| private TaskStackView mTaskStackView; |
| private RecentsAppWidgetHostView mSearchBar; |
| private TextView mHistoryButton; |
| private View mEmptyView; |
| private boolean mAwaitingFirstLayout = true; |
| private boolean mLastTaskLaunchedWasFreeform; |
| private Rect mSystemInsets = new Rect(); |
| |
| private RecentsTransitionHelper mTransitionHelper; |
| private RecentsViewTouchHandler mTouchHandler; |
| private TaskStack.DockState[] mVisibleDockStates = { |
| TaskStack.DockState.LEFT, |
| TaskStack.DockState.TOP, |
| TaskStack.DockState.RIGHT, |
| TaskStack.DockState.BOTTOM, |
| }; |
| |
| private final Interpolator mFastOutSlowInInterpolator; |
| private final Interpolator mFastOutLinearInInterpolator; |
| private final FlingAnimationUtils mFlingAnimationUtils; |
| |
| public RecentsView(Context context) { |
| this(context, null); |
| } |
| |
| public RecentsView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public RecentsView(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public RecentsView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| Resources res = context.getResources(); |
| setWillNotDraw(false); |
| mHandler = new Handler(); |
| mTransitionHelper = new RecentsTransitionHelper(getContext(), mHandler); |
| mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(context, |
| com.android.internal.R.interpolator.fast_out_slow_in); |
| mFastOutLinearInInterpolator = AnimationUtils.loadInterpolator(context, |
| com.android.internal.R.interpolator.fast_out_linear_in); |
| mTouchHandler = new RecentsViewTouchHandler(this); |
| mFlingAnimationUtils = new FlingAnimationUtils(context, 0.3f); |
| |
| LayoutInflater inflater = LayoutInflater.from(context); |
| mHistoryButton = (TextView) inflater.inflate(R.layout.recents_history_button, this, false); |
| mHistoryButton.setOnClickListener(new View.OnClickListener() { |
| @Override |
| public void onClick(View v) { |
| EventBus.getDefault().send(new ShowHistoryEvent()); |
| } |
| }); |
| addView(mHistoryButton); |
| mEmptyView = inflater.inflate(R.layout.recents_empty, this, false); |
| addView(mEmptyView); |
| } |
| |
| /** Set/get the bsp root node */ |
| public void setTaskStack(TaskStack stack) { |
| RecentsConfiguration config = Recents.getConfiguration(); |
| RecentsActivityLaunchState launchState = config.getLaunchState(); |
| mStack = stack; |
| if (launchState.launchedReuseTaskStackViews) { |
| if (mTaskStackView != null) { |
| // If onRecentsHidden is not triggered, we need to the stack view again here |
| mTaskStackView.reset(); |
| mTaskStackView.setStack(stack); |
| } else { |
| mTaskStackView = new TaskStackView(getContext(), stack); |
| addView(mTaskStackView); |
| } |
| } else { |
| if (mTaskStackView != null) { |
| removeView(mTaskStackView); |
| } |
| mTaskStackView = new TaskStackView(getContext(), stack); |
| addView(mTaskStackView); |
| } |
| |
| // Update the top level view's visibilities |
| if (stack.getStackTaskCount() > 0) { |
| hideEmptyView(); |
| } else { |
| showEmptyView(); |
| } |
| |
| // Trigger a new layout |
| requestLayout(); |
| } |
| |
| /** |
| * Returns whether the last task launched was in the freeform stack or not. |
| */ |
| public boolean isLastTaskLaunchedFreeform() { |
| return mLastTaskLaunchedWasFreeform; |
| } |
| |
| /** |
| * Returns the currently set task stack. |
| */ |
| public TaskStack getTaskStack() { |
| return mStack; |
| } |
| |
| /** Gets the next task in the stack - or if the last - the top task */ |
| public Task getNextTaskOrTopTask(Task taskToSearch) { |
| Task returnTask = null; |
| boolean found = false; |
| if (mTaskStackView != null) { |
| TaskStack stack = mTaskStackView.getStack(); |
| ArrayList<Task> taskList = stack.getStackTasks(); |
| // Iterate the stack views and try and find the focused task |
| for (int j = taskList.size() - 1; j >= 0; --j) { |
| Task task = taskList.get(j); |
| // Return the next task in the line. |
| if (found) |
| return task; |
| // Remember the first possible task as the top task. |
| if (returnTask == null) |
| returnTask = task; |
| if (task == taskToSearch) |
| found = true; |
| } |
| } |
| return returnTask; |
| } |
| |
| /** Launches the focused task from the first stack if possible */ |
| public boolean launchFocusedTask() { |
| if (mTaskStackView != null) { |
| TaskStack stack = mTaskStackView.getStack(); |
| Task task = mTaskStackView.getFocusedTask(); |
| if (task != null) { |
| TaskView taskView = mTaskStackView.getChildViewForTask(task); |
| EventBus.getDefault().send(new LaunchTaskEvent(taskView, task, null, |
| INVALID_STACK_ID, false)); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** Launches the task that recents was launched from if possible */ |
| public boolean launchPreviousTask() { |
| if (mTaskStackView != null) { |
| TaskStack stack = mTaskStackView.getStack(); |
| Task task = stack.getLaunchTarget(); |
| if (task != null) { |
| TaskView taskView = mTaskStackView.getChildViewForTask(task); |
| EventBus.getDefault().send(new LaunchTaskEvent(taskView, task, null, |
| INVALID_STACK_ID, false)); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** Launches a given task. */ |
| public boolean launchTask(Task task, Rect taskBounds, int destinationStack) { |
| if (mTaskStackView != null) { |
| TaskStack stack = mTaskStackView.getStack(); |
| // Iterate the stack views and try and find the given task. |
| List<TaskView> taskViews = mTaskStackView.getTaskViews(); |
| int taskViewCount = taskViews.size(); |
| for (int j = 0; j < taskViewCount; j++) { |
| TaskView tv = taskViews.get(j); |
| if (tv.getTask() == task) { |
| EventBus.getDefault().send(new LaunchTaskEvent(tv, task, taskBounds, |
| destinationStack, false)); |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** Requests all task stacks to start their enter-recents animation */ |
| public void startEnterRecentsAnimation(ViewAnimation.TaskViewEnterContext ctx) { |
| // We have to increment/decrement the post animation trigger in case there are no children |
| // to ensure that it runs |
| ctx.postAnimationTrigger.increment(); |
| if (mTaskStackView != null) { |
| mTaskStackView.startEnterRecentsAnimation(ctx); |
| } |
| ctx.postAnimationTrigger.decrement(); |
| } |
| |
| /** Requests all task stacks to start their exit-recents animation */ |
| public void startExitToHomeAnimation(ViewAnimation.TaskViewExitContext ctx) { |
| // We have to increment/decrement the post animation trigger in case there are no children |
| // to ensure that it runs |
| ctx.postAnimationTrigger.increment(); |
| if (mTaskStackView != null) { |
| mTaskStackView.startExitToHomeAnimation(ctx); |
| } |
| ctx.postAnimationTrigger.decrement(); |
| |
| // Hide the history button |
| int taskViewExitToHomeDuration = getResources().getInteger( |
| R.integer.recents_task_exit_to_home_duration); |
| hideHistoryButton(taskViewExitToHomeDuration); |
| |
| // If we are going home, cancel the previous task's window transition |
| EventBus.getDefault().send(new CancelEnterRecentsWindowAnimationEvent(null)); |
| |
| // Notify sof the exit animation |
| EventBus.getDefault().send(new DismissRecentsToHomeAnimationStarted()); |
| } |
| |
| /** Adds the search bar */ |
| public void setSearchBar(RecentsAppWidgetHostView searchBar) { |
| // Remove the previous search bar if one exists |
| if (mSearchBar != null && indexOfChild(mSearchBar) > -1) { |
| removeView(mSearchBar); |
| } |
| // Add the new search bar |
| if (searchBar != null) { |
| mSearchBar = searchBar; |
| addView(mSearchBar); |
| } |
| } |
| |
| /** Returns whether there is currently a search bar */ |
| public boolean hasValidSearchBar() { |
| return mSearchBar != null && !mSearchBar.isReinflateRequired(); |
| } |
| |
| /** |
| * Hides the task stack and shows the empty view. |
| */ |
| public void showEmptyView() { |
| if (RecentsDebugFlags.Static.EnableSearchBar && (mSearchBar != null)) { |
| mSearchBar.setVisibility(View.INVISIBLE); |
| } |
| mTaskStackView.setVisibility(View.INVISIBLE); |
| mEmptyView.setVisibility(View.VISIBLE); |
| mEmptyView.bringToFront(); |
| mHistoryButton.bringToFront(); |
| } |
| |
| /** |
| * Shows the task stack and hides the empty view. |
| */ |
| public void hideEmptyView() { |
| mEmptyView.setVisibility(View.INVISIBLE); |
| mTaskStackView.setVisibility(View.VISIBLE); |
| if (RecentsDebugFlags.Static.EnableSearchBar && (mSearchBar != null)) { |
| mSearchBar.setVisibility(View.VISIBLE); |
| } |
| mTaskStackView.bringToFront(); |
| if (mSearchBar != null) { |
| mSearchBar.bringToFront(); |
| } |
| mHistoryButton.bringToFront(); |
| } |
| |
| /** |
| * Returns the last known system insets. |
| */ |
| public Rect getSystemInsets() { |
| return mSystemInsets; |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| EventBus.getDefault().register(this, RecentsActivity.EVENT_BUS_PRIORITY + 1); |
| EventBus.getDefault().register(mTouchHandler, RecentsActivity.EVENT_BUS_PRIORITY + 1); |
| super.onAttachedToWindow(); |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| EventBus.getDefault().unregister(this); |
| EventBus.getDefault().unregister(mTouchHandler); |
| } |
| |
| /** |
| * This is called with the full size of the window since we are handling our own insets. |
| */ |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| RecentsConfiguration config = Recents.getConfiguration(); |
| int width = MeasureSpec.getSize(widthMeasureSpec); |
| int height = MeasureSpec.getSize(heightMeasureSpec); |
| |
| // Get the search bar bounds and measure the search bar layout |
| Rect searchBarSpaceBounds = new Rect(); |
| if (mSearchBar != null) { |
| config.getSearchBarBounds(new Rect(0, 0, width, height), mSystemInsets.top, |
| searchBarSpaceBounds); |
| mSearchBar.measure( |
| MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.width(), MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.height(), MeasureSpec.EXACTLY)); |
| } |
| |
| Rect taskStackBounds = new Rect(); |
| config.getTaskStackBounds(new Rect(0, 0, width, height), mSystemInsets.top, |
| mSystemInsets.right, searchBarSpaceBounds, taskStackBounds); |
| if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { |
| mTaskStackView.setTaskStackBounds(taskStackBounds, mSystemInsets); |
| mTaskStackView.measure(widthMeasureSpec, heightMeasureSpec); |
| } |
| |
| // Measure the empty view |
| measureChild(mEmptyView, MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY)); |
| |
| // Measure the history button with the full space above the stack, but width-constrained |
| // to the stack |
| Rect historyButtonRect = mTaskStackView.mLayoutAlgorithm.mHistoryButtonRect; |
| measureChild(mHistoryButton, |
| MeasureSpec.makeMeasureSpec(historyButtonRect.width(), MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(historyButtonRect.height(), |
| MeasureSpec.EXACTLY)); |
| |
| setMeasuredDimension(width, height); |
| } |
| |
| /** |
| * This is called with the full size of the window since we are handling our own insets. |
| */ |
| @Override |
| protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
| RecentsConfiguration config = Recents.getConfiguration(); |
| |
| // Get the search bar bounds so that we lay it out |
| Rect measuredRect = new Rect(0, 0, getMeasuredWidth(), getMeasuredHeight()); |
| Rect searchBarSpaceBounds = new Rect(); |
| if (mSearchBar != null) { |
| config.getSearchBarBounds(measuredRect, |
| mSystemInsets.top, searchBarSpaceBounds); |
| mSearchBar.layout(searchBarSpaceBounds.left, searchBarSpaceBounds.top, |
| searchBarSpaceBounds.right, searchBarSpaceBounds.bottom); |
| } |
| |
| if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { |
| mTaskStackView.layout(left, top, left + getMeasuredWidth(), top + getMeasuredHeight()); |
| } |
| |
| // Layout the empty view |
| mEmptyView.layout(left, top, right, bottom); |
| |
| // Layout the history button left-aligned with the stack, but offset from the top of the |
| // view |
| Rect historyButtonRect = mTaskStackView.mLayoutAlgorithm.mHistoryButtonRect; |
| mHistoryButton.layout(historyButtonRect.left, historyButtonRect.top, |
| historyButtonRect.right, historyButtonRect.bottom); |
| |
| if (mAwaitingFirstLayout) { |
| mAwaitingFirstLayout = false; |
| |
| // If launched via dragging from the nav bar, then we should translate the whole view |
| // down offscreen |
| RecentsActivityLaunchState launchState = Recents.getConfiguration().getLaunchState(); |
| if (launchState.launchedViaDragGesture) { |
| setTranslationY(getMeasuredHeight()); |
| } else { |
| setTranslationY(0f); |
| } |
| } |
| } |
| |
| @Override |
| public WindowInsets onApplyWindowInsets(WindowInsets insets) { |
| mSystemInsets.set(insets.getSystemWindowInsets()); |
| requestLayout(); |
| return insets; |
| } |
| |
| @Override |
| public boolean onInterceptTouchEvent(MotionEvent ev) { |
| return mTouchHandler.onInterceptTouchEvent(ev); |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent ev) { |
| return mTouchHandler.onTouchEvent(ev); |
| } |
| |
| @Override |
| protected void dispatchDraw(Canvas canvas) { |
| super.dispatchDraw(canvas); |
| for (int i = mVisibleDockStates.length - 1; i >= 0; i--) { |
| Drawable d = mVisibleDockStates[i].viewState.dockAreaOverlay; |
| if (d.getAlpha() > 0) { |
| d.draw(canvas); |
| } |
| } |
| } |
| |
| @Override |
| protected boolean verifyDrawable(Drawable who) { |
| for (int i = mVisibleDockStates.length - 1; i >= 0; i--) { |
| Drawable d = mVisibleDockStates[i].viewState.dockAreaOverlay; |
| if (d == who) { |
| return true; |
| } |
| } |
| return super.verifyDrawable(who); |
| } |
| |
| /**** EventBus Events ****/ |
| |
| public final void onBusEvent(LaunchTaskEvent event) { |
| mLastTaskLaunchedWasFreeform = event.task.isFreeformTask(); |
| mTransitionHelper.launchTaskFromRecents(mStack, event.task, mTaskStackView, event.taskView, |
| event.screenPinningRequested, event.targetTaskBounds, event.targetTaskStack); |
| } |
| |
| public final void onBusEvent(DragStartEvent event) { |
| updateVisibleDockRegions(mTouchHandler.getDockStatesForCurrentOrientation(), |
| TaskStack.DockState.NONE.viewState.dockAreaAlpha); |
| } |
| |
| public final void onBusEvent(DragDropTargetChangedEvent event) { |
| if (event.dropTarget == null || !(event.dropTarget instanceof TaskStack.DockState)) { |
| updateVisibleDockRegions(mTouchHandler.getDockStatesForCurrentOrientation(), |
| TaskStack.DockState.NONE.viewState.dockAreaAlpha); |
| } else { |
| final TaskStack.DockState dockState = (TaskStack.DockState) event.dropTarget; |
| updateVisibleDockRegions(new TaskStack.DockState[] {dockState}, -1); |
| } |
| } |
| |
| public final void onBusEvent(final DragEndEvent event) { |
| // Animate the overlay alpha back to 0 |
| updateVisibleDockRegions(null, -1); |
| |
| // Handle the case where we drop onto a dock region |
| if (event.dropTarget instanceof TaskStack.DockState) { |
| final TaskStack.DockState dockState = (TaskStack.DockState) event.dropTarget; |
| |
| // Remove the task after it is docked |
| event.taskView.animate() |
| .alpha(0f) |
| .setDuration(150) |
| .setInterpolator(mFastOutLinearInInterpolator) |
| .setUpdateListener(null) |
| .setListener(null) |
| .withEndAction(new Runnable() { |
| @Override |
| public void run() { |
| mTaskStackView.getStack().removeTask(event.task); |
| } |
| }) |
| .withLayer() |
| .start(); |
| |
| // Dock the task and launch it |
| SystemServicesProxy ssp = Recents.getSystemServices(); |
| ssp.startTaskInDockedMode(event.task.key.id, dockState.createMode); |
| launchTask(event.task, null, INVALID_STACK_ID); |
| |
| MetricsLogger.action(mContext, |
| MetricsLogger.ACTION_WINDOW_DOCK_DRAG_DROP); |
| } |
| } |
| |
| public final void onBusEvent(DraggingInRecentsEvent event) { |
| if (mTaskStackView.getTaskViews().size() > 0) { |
| setTranslationY(event.distanceFromTop - mTaskStackView.getTaskViews().get(0).getY()); |
| } |
| } |
| |
| public final void onBusEvent(DraggingInRecentsEndedEvent event) { |
| ViewPropertyAnimator animator = animate(); |
| if (event.velocity > mFlingAnimationUtils.getMinVelocityPxPerSecond()) { |
| animator.translationY(getHeight()); |
| animator.withEndAction(new Runnable() { |
| @Override |
| public void run() { |
| WindowManagerProxy.getInstance().maximizeDockedStack(); |
| } |
| }); |
| mFlingAnimationUtils.apply(animator, getTranslationY(), getHeight(), event.velocity); |
| } else { |
| animator.translationY(0f); |
| animator.setListener(null); |
| mFlingAnimationUtils.apply(animator, getTranslationY(), 0, event.velocity); |
| } |
| animator.start(); |
| } |
| |
| public final void onBusEvent(ShowHistoryEvent event) { |
| // Hide the history button when the history view is shown |
| hideHistoryButton(getResources().getInteger(R.integer.recents_history_transition_duration), |
| event.getAnimationTrigger()); |
| event.addPostAnimationCallback(new Runnable() { |
| @Override |
| public void run() { |
| setAlpha(0f); |
| } |
| }); |
| } |
| |
| public final void onBusEvent(HideHistoryEvent event) { |
| // Show the history button when the history view is hidden |
| setAlpha(1f); |
| showHistoryButton(getResources().getInteger(R.integer.recents_history_transition_duration), |
| event.getAnimationTrigger()); |
| } |
| |
| public final void onBusEvent(ShowHistoryButtonEvent event) { |
| showHistoryButton(150); |
| } |
| |
| public final void onBusEvent(HideHistoryButtonEvent event) { |
| hideHistoryButton(100); |
| } |
| |
| public final void onBusEvent(TaskStackUpdatedEvent event) { |
| mStack.setTasks(event.stack.computeAllTasksList(), true /* notifyStackChanges */); |
| mStack.createAffiliatedGroupings(getContext()); |
| } |
| |
| /** |
| * Shows the history button. |
| */ |
| private void showHistoryButton(final int duration) { |
| ReferenceCountedTrigger postAnimationTrigger = new ReferenceCountedTrigger(); |
| showHistoryButton(duration, postAnimationTrigger); |
| postAnimationTrigger.flushLastDecrementRunnables(); |
| } |
| |
| private void showHistoryButton(final int duration, |
| final ReferenceCountedTrigger postHideHistoryAnimationTrigger) { |
| mHistoryButton.setVisibility(View.VISIBLE); |
| mHistoryButton.setAlpha(0f); |
| mHistoryButton.setText(getContext().getString(R.string.recents_history_label_format, |
| mStack.getHistoricalTasks().size())); |
| postHideHistoryAnimationTrigger.addLastDecrementRunnable(new Runnable() { |
| @Override |
| public void run() { |
| mHistoryButton.animate() |
| .alpha(1f) |
| .setDuration(duration) |
| .setInterpolator(mFastOutSlowInInterpolator) |
| .withLayer() |
| .start(); |
| } |
| }); |
| } |
| |
| /** |
| * Hides the history button. |
| */ |
| private void hideHistoryButton(int duration) { |
| ReferenceCountedTrigger postAnimationTrigger = new ReferenceCountedTrigger(); |
| hideHistoryButton(duration, postAnimationTrigger); |
| postAnimationTrigger.flushLastDecrementRunnables(); |
| } |
| |
| private void hideHistoryButton(int duration, |
| final ReferenceCountedTrigger postHideStackAnimationTrigger) { |
| mHistoryButton.animate() |
| .alpha(0f) |
| .setDuration(duration) |
| .setInterpolator(mFastOutLinearInInterpolator) |
| .withEndAction(new Runnable() { |
| @Override |
| public void run() { |
| mHistoryButton.setVisibility(View.INVISIBLE); |
| postHideStackAnimationTrigger.decrement(); |
| } |
| }) |
| .withLayer() |
| .start(); |
| postHideStackAnimationTrigger.increment(); |
| } |
| |
| /** |
| * Updates the dock region to match the specified dock state. |
| */ |
| private void updateVisibleDockRegions(TaskStack.DockState[] newDockStates, int overrideAlpha) { |
| ArraySet<TaskStack.DockState> newDockStatesSet = new ArraySet<>(); |
| if (newDockStates != null) { |
| for (TaskStack.DockState dockState : newDockStates) { |
| newDockStatesSet.add(dockState); |
| } |
| } |
| for (TaskStack.DockState dockState : mVisibleDockStates) { |
| TaskStack.DockState.ViewState viewState = dockState.viewState; |
| if (newDockStates == null || !newDockStatesSet.contains(dockState)) { |
| // This is no longer visible, so hide it |
| viewState.startAlphaAnimation(0, 150); |
| } else { |
| // This state is now visible, update the bounds and show it |
| int alpha = (overrideAlpha != -1 ? overrideAlpha : viewState.dockAreaAlpha); |
| viewState.dockAreaOverlay.setBounds( |
| dockState.getDockedBounds(getMeasuredWidth(), getMeasuredHeight())); |
| viewState.dockAreaOverlay.setCallback(this); |
| viewState.startAlphaAnimation(alpha, 150); |
| } |
| } |
| } |
| |
| public final void onBusEvent(RecentsVisibilityChangedEvent event) { |
| if (!event.visible) { |
| // Reset the view state |
| mAwaitingFirstLayout = true; |
| mLastTaskLaunchedWasFreeform = false; |
| } |
| } |
| } |
