/** Updates the min and max virtual scroll bounds */
void updateMinMaxScroll(
boolean boundScrollToNewMinMax, boolean launchedWithAltTab, boolean launchedFromHome) {
// Compute the min and max scroll values
mLayoutAlgorithm.computeMinMaxScroll(mCallback.getData(), launchedWithAltTab, launchedFromHome);
// Debug logging
if (true) {
mStackScroller.boundScroll();
}
}
public void notifyDataSetChanged() {
// Get the stack scroll of the task to anchor to (since we are removing something, the front
// most task will be our anchor task)
T anchorTask = null;
float prevAnchorTaskScroll = 0;
boolean pullStackForward = mCallback.getData().size() > 0;
if (pullStackForward) {
anchorTask = mCallback.getData().get(mCallback.getData().size() - 1);
prevAnchorTaskScroll = mLayoutAlgorithm.getStackScrollForTask(anchorTask);
}
// Update the min/max scroll and animate other task views into their new positions
updateMinMaxScroll(true, mConfig.launchedWithAltTab, mConfig.launchedFromHome);
// Offset the stack by as much as the anchor task would otherwise move back
if (pullStackForward) {
float anchorTaskScroll = mLayoutAlgorithm.getStackScrollForTask(anchorTask);
mStackScroller.setStackScroll(
mStackScroller.getStackScroll() + (anchorTaskScroll - prevAnchorTaskScroll));
mStackScroller.boundScroll();
}
// Animate all the tasks into place
requestSynchronizeStackViewsWithModel(200);
T newFrontMostTask =
mCallback.getData().size() > 0
? mCallback.getData().get(mCallback.getData().size() - 1)
: null;
// Update the new front most task
if (newFrontMostTask != null) {
DeckChildView<T> frontTv = getChildViewForTask(newFrontMostTask);
if (frontTv != null) {
frontTv.onTaskBound(newFrontMostTask);
}
}
// If there are no remaining tasks
if (mCallback.getData().size() == 0) {
mCallback.onNoViewsToDeck();
}
}