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Bug 1055604 - Add animation to reveal tabs on startup (r=mcomella)

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This commit is contained in:
Lucas Rocha 2014-11-27 17:13:03 +00:00
parent fb1fdfba92
commit 3582f3dcd9
2 changed files with 40 additions and 0 deletions
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3
mobile/android/base/tabs/TabStrip.java
View File

@ -103,6 +103,9 @@ public class TabStrip extends ThemedLinearLayout {
public void onTabChanged(Tab tab, Tabs.TabEvents msg, Object data) {
switch (msg) {
case RESTORED:
tabStripView.restoreTabs();
break;
case ADDED:
tabStripView.addTab(tab);
break;

37
mobile/android/base/tabs/TabStripView.java
View File

@ -205,6 +205,38 @@ public class TabStripView extends TwoWayView {
});
}
private void animateRestoredTabs() {
getViewTreeObserver().addOnPreDrawListener(new OnPreDrawListener() {
@Override
public boolean onPreDraw() {
getViewTreeObserver().removeOnPreDrawListener(this);
final List<Animator> childAnimators = new ArrayList<Animator>();
final int tabHeight = getHeight() - getPaddingTop() - getPaddingBottom();
final int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
childAnimators.add(
ObjectAnimator.ofFloat(child, "translationY", tabHeight, 0));
}
final AnimatorSet animatorSet = new AnimatorSet();
animatorSet.playTogether(childAnimators);
animatorSet.setDuration(ANIM_TIME_MS);
animatorSet.setInterpolator(ANIM_INTERPOLATOR);
animatorSet.addListener(animatorListener);
TransitionsTracker.track(animatorSet);
animatorSet.start();
return true;
}
});
}
private void ensurePositionIsVisible(final int position) {
getViewTreeObserver().addOnPreDrawListener(new OnPreDrawListener() {
@Override
@ -244,6 +276,11 @@ public class TabStripView extends TwoWayView {
adapter.clear();
}
void restoreTabs() {
refreshTabs();
animateRestoredTabs();
}
void addTab(Tab tab) {
// Refresh the list to make sure the new tab is
// added in the right position.