commit 3e056d13d2bddc83d30abfd6a8ea17807188d07f
author Adam Cohen <adamcohen@google.com> Fri Jul 19 23:38:38 2013 +0000
committer Android (Google) Code Review <android-gerrit@google.com> Fri Jul 19 23:38:39 2013 +0000
tree 4602d31395a9572f0f5c274e44d6143bf69c690f
parent ae6f6c67a3aa78d6ebde87321a0abd191aee94e1
parent 22cba7f9958569a5e4c1dfcce4969daeaa6c898c

Merge "Adding layout transition for when pages get deleted" into jb-ub-gel-agar

src/com/android/launcher3/Workspace.java

diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 98c6fa3..0865411 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -18,6 +18,7 @@
 
 import android.animation.Animator;
 import android.animation.AnimatorSet;
+import android.animation.LayoutTransition;
 import android.animation.ObjectAnimator;
 import android.animation.TimeInterpolator;
 import android.animation.ValueAnimator;
@@ -99,6 +100,7 @@
 
     private float mWallpaperScrollRatio = 1.0f;
 
+    private LayoutTransition mLayoutTransition;
     private final WallpaperManager mWallpaperManager;
     private IBinder mWindowToken;
     private static final float WALLPAPER_SCREENS_SPAN = 2f;
@@ -415,6 +417,7 @@
         setClipToPadding(false);
         setChildrenDrawnWithCacheEnabled(true);
         setMinScale(0.5f);
+        setupLayoutTransition();
 
         final Resources res = getResources();
         try {
@@ -433,6 +436,16 @@
         mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity);
     }
 
+    private void setupLayoutTransition() {
+        // We want to show layout transitions when pages are deleted, to close the gap.
+        mLayoutTransition = new LayoutTransition();
+        mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING);
+        mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING);
+        mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING);
+        mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING);
+        setLayoutTransition(mLayoutTransition);
+    }
+
     @Override
     protected int getScrollMode() {
         return SmoothPagedView.X_LARGE_MODE;
@@ -1316,8 +1329,13 @@
                     (getScrollForPage(index + 1) - getScrollForPage(index));
 
             setBackgroundAlpha(progress * 0.8f);
-            mLauncher.getHotseat().setTranslationX(translationX);
-            getPageIndicator().setTranslationX(translationX);
+
+            if (mLauncher.getHotseat() != null) {
+                mLauncher.getHotseat().setTranslationX(translationX);
+            }
+            if (getPageIndicator() != null) {
+                getPageIndicator().setTranslationX(translationX);
+            }
         }
     }
 
@@ -1688,6 +1706,9 @@
             ((CellLayout) getChildAt(i)).setUseActiveGlowBackground(true);
         }
         showOutlines();
+
+        // Reordering handles its own animations, disable the automatic ones.
+        setLayoutTransition(null);
     }
 
     protected void onEndReordering() {
@@ -1704,6 +1725,9 @@
             mScreenOrder.add(getIdForScreen(cl));
         }
         mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder);
+
+        // Re-enable auto layout transitions for page deletion.
+        setLayoutTransition(mLayoutTransition);
     }
 
     Animator getChangeStateAnimation(final State state, boolean animated, int delay) {