[PB9] Make buttons that animate-out unclickable

Clicking on a button that is animating-out is only done by
mistake. Better make them unclickable.
Also, interrupt an out-in animation if it has been preempted.

Bug: 7600384
Change-Id: Ic4700cda46a894ea580bc67ee7bef885ecf1d3bc

java/src/com/android/inputmethod/dictionarypack/ButtonSwitcher.java

@@ -126,6 +126,7 @@ public class ButtonSwitcher extends FrameLayout {
                     new AnimatorListenerAdapter() {
                         @Override
                         public void onAnimationEnd(final Animator animation) {
+                            if (newStatus != mStatus) return;
                             animateButton(newButton, ANIMATION_IN);
                         }
                     });
@@ -144,8 +145,10 @@ public class ButtonSwitcher extends FrameLayout {
         final float outerX = getWidth();
         final float innerX = button.getX() - button.getTranslationX();
         if (ANIMATION_IN == direction) {
+            button.setClickable(true);
             return button.animate().translationX(0);
         } else {
+            button.setClickable(false);
             return button.animate().translationX(outerX - innerX);
         }
     }

java/src/com/android/inputmethod/dictionarypack/WordListPreference.java

@@ -219,8 +219,9 @@ public final class WordListPreference extends Preference {
             final ListView listView = (ListView)parent;
             final int indexToOpen;
             // Close all first, we'll open back any item that needs to be open.
+            final boolean wasOpen = mInterfaceState.isOpen(mWordlistId);
             mInterfaceState.closeAll();
-            if (mInterfaceState.isOpen(mWordlistId)) {
+            if (wasOpen) {
                 // This button being shown. Take note that we don't want to open any button in the
                 // loop below.
                 indexToOpen = -1;