/** Resets this TaskStackView for reuse. */
void reset() {
// Reset the focused task
resetFocusedTask();
// Return all the views to the pool
int childCount = getChildCount();
for (int i = childCount - 1; i >= 0; i--) {
DeckChildView<T> tv = (DeckChildView) getChildAt(i);
mViewPool.returnViewToPool(tv);
}
// Mark each task view for relayout
if (mViewPool != null) {
Iterator<DeckChildView<T>> iter = mViewPool.poolViewIterator();
if (iter != null) {
while (iter.hasNext()) {
DeckChildView tv = iter.next();
tv.reset();
}
}
}
// Reset the stack state
mStackViewsDirty = true;
mStackViewsClipDirty = true;
mAwaitingFirstLayout = true;
mPrevAccessibilityFocusedIndex = -1;
if (mUIDozeTrigger != null) {
mUIDozeTrigger.stopDozing();
mUIDozeTrigger.resetTrigger();
}
mStackScroller.reset();
}
@Override
public void prepareViewToLeavePool(DeckChildView<T> dcv, T key, boolean isNewView) {
// It is possible for a view to be returned to the view pool before it is laid out,
// which means that we will need to relayout the view when it is first used next.
boolean requiresRelayout = dcv.getWidth() <= 0 && !isNewView;
// Rebind the task and request that this task's data be filled into the TaskView
dcv.onTaskBound(key);
// Load the task data
mCallback.loadViewData(new WeakReference<DeckChildView<T>>(dcv), key);
// If the doze trigger has already fired, then update the state for this task view
if (mUIDozeTrigger.hasTriggered()) {
dcv.setNoUserInteractionState();
}
// If we've finished the start animation, then ensure we always enable the focus animations
if (mStartEnterAnimationCompleted) {
dcv.enableFocusAnimations();
}
// Find the index where this task should be placed in the stack
int insertIndex = -1;
int position = mCallback.getData().indexOf(key);
if (position != -1) {
int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
T otherKey = ((DeckChildView<T>) getChildAt(i)).getAttachedKey();
int pos = mCallback.getData().indexOf(otherKey);
if (position < pos) {
insertIndex = i;
break;
}
}
}
// Add/attach the view to the hierarchy
if (isNewView) {
addView(dcv, insertIndex);
} else {
attachViewToParent(dcv, insertIndex, dcv.getLayoutParams());
if (requiresRelayout) {
dcv.requestLayout();
}
}
// Set the new state for this view, including the callbacks and view clipping
dcv.setCallbacks(this);
dcv.setTouchEnabled(true);
dcv.setClipViewInStack(true);
}
/** Handler for the first layout. */
void onFirstLayout() {
int offscreenY =
mLayoutAlgorithm.mViewRect.bottom
- (mLayoutAlgorithm.mTaskRect.top - mLayoutAlgorithm.mViewRect.top);
int childCount = getChildCount();
// Prepare the first view for its enter animation
for (int i = childCount - 1; i >= 0; i--) {
DeckChildView tv = (DeckChildView) getChildAt(i);
// TODO: The false needs to go!
tv.prepareEnterRecentsAnimation(i == childCount - 1, false, offscreenY);
}
// If the enter animation started already and we haven't completed a layout yet, do the
// enter animation now
if (mStartEnterAnimationRequestedAfterLayout) {
startEnterRecentsAnimation(mStartEnterAnimationContext);
mStartEnterAnimationRequestedAfterLayout = false;
mStartEnterAnimationContext = null;
}
// When Alt-Tabbing, focus the previous task (but leave the animation until we finish the
// enter animation).
if (mConfig.launchedWithAltTab) {
if (mConfig.launchedFromAppWithThumbnail) {
focusTask(
Math.max(0, mCallback.getData().size() - 2),
false,
mConfig.launchedHasConfigurationChanged);
} else {
focusTask(
Math.max(0, mCallback.getData().size() - 1),
false,
mConfig.launchedHasConfigurationChanged);
}
}
// Start dozing
mUIDozeTrigger.startDozing();
}
@Override
public void onDeckChildViewClicked(DeckChildView<T> dcv, T key) {
// Cancel any doze triggers
mUIDozeTrigger.stopDozing();
mCallback.onItemClick(key);
}
/** Pokes the dozer on user interaction. */
void onUserInteraction() {
// Poke the doze trigger if it is dozing
mUIDozeTrigger.poke();
}