am ea9ad5ce: Merge remote-tracking branch \'origin/ub-launcher3-burnaby\' into mnc-dev

* commit 'ea9ad5cead9ad894fb670476bb5381198cdcf2de': (76 commits)
  Restoring provider behavior for reloading app on old devices   > For older devices, launcher will only reload in case of inserts with specific query parameters   > For older devices, launcehr will notify content observers of any internal inserts   > Chaning TAG for Launcher provider as max logging tag is only 23 characters
  Removing items which are on invalid screen
  Preventing null pointer crash when opening a folder
  Revert workaround for move to default screen on home intent.
  Fixing NPE in recycler view scroll bar.
  Adding workaround for regression caused by ag/752175
  Adding gradle script for Android Studio
  Override the overscroll color for the widget rows.
  Adding graphic for all apps empty search screen.
  Using GET_UNINSTALLED_PACKAGES flag when getting packageInfo for a managed profile app
  Revert "Adding viewId for the QSB"
  Adding viewId for the QSB
  Fixing issue with missing scroll bar after fast-scrolling and searching.
  Fixing an issue where you would inadvertently start fastscrolling.
  Pending bind callbacks should be cleared before starting the loader, similar to startBinding
  Fixing widgets container inactive scroll bar color.
  Making the detached scrollbar catch up faster to the actual scroll position.
  Updating theme to use the light theme by default, instead of wallpaper theme   > This allows us to use all the goodness of material theme   > Cursor in folder edit text is no longer 1px wide
  Updating the target sdk to launcher
  Using the usermanager api to get creation time
  ...

1 files changed, 116 insertions, 100 deletions

diff --git a/src/com/android/launcher3/SearchDropTargetBar.java b/src/com/android/launcher3/SearchDropTargetBar.java
index 4cdf1cac9..772a334b9 100644
--- a/src/com/android/launcher3/SearchDropTargetBar.java
+++ b/src/com/android/launcher3/SearchDropTargetBar.java
@@ -18,32 +18,57 @@ package com.android.launcher3;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
-import android.animation.ObjectAnimator;
-import android.animation.ValueAnimator;
 import android.content.Context;
 import android.graphics.Rect;
 import android.util.AttributeSet;
 import android.view.View;
+import android.view.accessibility.AccessibilityManager;
 import android.view.animation.AccelerateInterpolator;
 import android.widget.FrameLayout;
 
+import com.android.launcher3.util.Thunk;
+
 /*
  * Ths bar will manage the transition between the QSB search bar and the delete drop
  * targets so that each of the individual IconDropTargets don't have to.
  */
 public class SearchDropTargetBar extends FrameLayout implements DragController.DragListener {
 
-    private static final int TRANSITION_DURATION = 200;
+    /** The different states that the search bar space can be in. */
+    public enum State {
+        INVISIBLE   (0f, 0f),
+        SEARCH_BAR  (1f, 0f),
+        DROP_TARGET (0f, 1f);
+
+        private final float mSearchBarAlpha;
+        private final float mDropTargetBarAlpha;
+
+        State(float sbAlpha, float dtbAlpha) {
+            mSearchBarAlpha = sbAlpha;
+            mDropTargetBarAlpha = dtbAlpha;
+        }
+
+        float getSearchBarAlpha() {
+            return mSearchBarAlpha;
+        }
+
+        float getDropTargetBarAlpha() {
+            return mDropTargetBarAlpha;
+        }
+    }
 
-    private ObjectAnimator mShowDropTargetBarAnim;
-    private ValueAnimator mHideSearchBarAnim;
+    private static int DEFAULT_DRAG_FADE_DURATION = 175;
+
+    private LauncherViewPropertyAnimator mDropTargetBarAnimator;
+    private LauncherViewPropertyAnimator mQSBSearchBarAnimator;
     private static final AccelerateInterpolator sAccelerateInterpolator =
             new AccelerateInterpolator();
 
-    private boolean mIsSearchBarHidden;
-    private View mQSBSearchBar;
-    private View mDropTargetBar;
+    private State mState = State.SEARCH_BAR;
+    @Thunk View mQSB;
+    @Thunk View mDropTargetBar;
     private boolean mDeferOnDragEnd = false;
+    @Thunk boolean mAccessibilityEnabled = false;
 
     // Drop targets
     private ButtonDropTarget mInfoDropTarget;
@@ -75,39 +100,6 @@ public class SearchDropTargetBar extends FrameLayout implements DragController.D
         mUninstallDropTarget.setLauncher(launcher);
     }
 
-    public void setQsbSearchBar(View qsb) {
-        mQSBSearchBar = qsb;
-        if (mQSBSearchBar != null) {
-            mHideSearchBarAnim = LauncherAnimUtils.ofFloat(mQSBSearchBar, "alpha", 1f, 0f);
-            setupAnimation(mHideSearchBarAnim, mQSBSearchBar);
-        } else {
-            // Create a no-op animation of the search bar is null
-            mHideSearchBarAnim = ValueAnimator.ofFloat(0, 0);
-            mHideSearchBarAnim.setDuration(TRANSITION_DURATION);
-        }
-    }
-
-    private void prepareStartAnimation(View v) {
-        // Enable the hw layers before the animation starts (will be disabled in the onAnimationEnd
-        // callback below)
-        if (v != null) {
-            v.setLayerType(View.LAYER_TYPE_HARDWARE, null);
-        }
-    }
-
-    private void setupAnimation(ValueAnimator anim, final View v) {
-        anim.setInterpolator(sAccelerateInterpolator);
-        anim.setDuration(TRANSITION_DURATION);
-        anim.addListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                if (v != null) {
-                    v.setLayerType(View.LAYER_TYPE_NONE, null);
-                }
-            }
-        });
-    }
-
     @Override
     protected void onFinishInflate() {
         super.onFinishInflate();
@@ -124,72 +116,89 @@ public class SearchDropTargetBar extends FrameLayout implements DragController.D
 
         // Create the various fade animations
         mDropTargetBar.setAlpha(0f);
-        mShowDropTargetBarAnim = LauncherAnimUtils.ofFloat(mDropTargetBar, "alpha", 0f, 1f);
-        setupAnimation(mShowDropTargetBarAnim, mDropTargetBar);
-    }
+        mDropTargetBarAnimator = new LauncherViewPropertyAnimator(mDropTargetBar);
+        mDropTargetBarAnimator.setInterpolator(sAccelerateInterpolator);
+        mDropTargetBarAnimator.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationStart(Animator animation) {
+                // Ensure that the view is visible for the animation
+                mDropTargetBar.setVisibility(View.VISIBLE);
+            }
 
-    /**
-     * Finishes all the animations on the search and drop target bars.
-     */
-    public void finishAnimations() {
-        prepareStartAnimation(mDropTargetBar);
-        mShowDropTargetBarAnim.reverse();
-        prepareStartAnimation(mQSBSearchBar);
-        mHideSearchBarAnim.reverse();
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                if (mDropTargetBar != null) {
+                    AlphaUpdateListener.updateVisibility(mDropTargetBar, mAccessibilityEnabled);
+                }
+            }
+        });
     }
 
-    /**
-     * Shows the search bar.
-     */
-    public void showSearchBar(boolean animated) {
-        if (!mIsSearchBarHidden) return;
-        if (animated) {
-            prepareStartAnimation(mQSBSearchBar);
-            mHideSearchBarAnim.reverse();
+    public void setQsbSearchBar(View qsb) {
+        mQSB = qsb;
+        if (mQSB != null) {
+            // Update the search ber animation
+            mQSBSearchBarAnimator = new LauncherViewPropertyAnimator(mQSB);
+            mQSBSearchBarAnimator.setInterpolator(sAccelerateInterpolator);
+            mQSBSearchBarAnimator.addListener(new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationStart(Animator animation) {
+                    // Ensure that the view is visible for the animation
+                    if (mQSB != null) {
+                        mQSB.setVisibility(View.VISIBLE);
+                    }
+                }
+
+                @Override
+                public void onAnimationEnd(Animator animation) {
+                    if (mQSB != null) {
+                        AlphaUpdateListener.updateVisibility(mQSB, mAccessibilityEnabled);
+                    }
+                }
+            });
         } else {
-            mHideSearchBarAnim.cancel();
-            if (mQSBSearchBar != null) {
-                mQSBSearchBar.setAlpha(1f);
-            }
+            mQSBSearchBarAnimator = null;
         }
-        mIsSearchBarHidden = false;
     }
 
     /**
-     * Hides the search bar.  We only use this for clings.
+     * Animates the current search bar state to a new state.  If the {@param duration} is 0, then
+     * the state is applied immediately.
      */
-    public void hideSearchBar(boolean animated) {
-        if (mIsSearchBarHidden) return;
-        if (animated) {
-            prepareStartAnimation(mQSBSearchBar);
-            mHideSearchBarAnim.start();
-        } else {
-            mHideSearchBarAnim.cancel();
-            if (mQSBSearchBar != null) {
-                mQSBSearchBar.setAlpha(0f);
-            }
+    public void animateToState(State newState, int duration) {
+        if (mState != newState) {
+            mState = newState;
+
+            // Update the accessibility state
+            AccessibilityManager am = (AccessibilityManager)
+                    getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
+            mAccessibilityEnabled = am.isEnabled();
+
+            animateViewAlpha(mQSBSearchBarAnimator, mQSB, newState.getSearchBarAlpha(),
+                    duration);
+            animateViewAlpha(mDropTargetBarAnimator, mDropTargetBar, newState.getDropTargetBarAlpha(),
+                    duration);
         }
-        mIsSearchBarHidden = true;
     }
 
     /**
-     * Shows the drop target bar.
+     * Convenience method to animate the alpha of a view using hardware layers.
      */
-    public void showDeleteTarget() {
-        // Animate out the QSB search bar, and animate in the drop target bar
-        prepareStartAnimation(mDropTargetBar);
-        mShowDropTargetBarAnim.start();
-        hideSearchBar(true);
-    }
+    private void animateViewAlpha(LauncherViewPropertyAnimator animator, View v, float alpha,
+            int duration) {
+        if (v == null) {
+            return;
+        }
 
-    /**
-     * Hides the drop target bar.
-     */
-    public void hideDeleteTarget() {
-        // Restore the QSB search bar, and animate out the drop target bar
-        prepareStartAnimation(mDropTargetBar);
-        mShowDropTargetBarAnim.reverse();
-        showSearchBar(true);
+        animator.cancel();
+        if (Float.compare(v.getAlpha(), alpha) != 0) {
+            if (duration > 0) {
+                animator.alpha(alpha).withLayer().setDuration(duration).start();
+            } else {
+                v.setAlpha(alpha);
+                AlphaUpdateListener.updateVisibility(v, mAccessibilityEnabled);
+            }
+        }
     }
 
     /*
@@ -197,9 +206,13 @@ public class SearchDropTargetBar extends FrameLayout implements DragController.D
      */
     @Override
     public void onDragStart(DragSource source, Object info, int dragAction) {
-        showDeleteTarget();
+        animateToState(State.DROP_TARGET, DEFAULT_DRAG_FADE_DURATION);
     }
 
+    /**
+     * This is called to defer hiding the delete drop target until the drop animation has completed,
+     * instead of hiding immediately when the drag has ended.
+     */
     public void deferOnDragEnd() {
         mDeferOnDragEnd = true;
     }
@@ -207,22 +220,25 @@ public class SearchDropTargetBar extends FrameLayout implements DragController.D
     @Override
     public void onDragEnd() {
         if (!mDeferOnDragEnd) {
-            hideDeleteTarget();
+            animateToState(State.SEARCH_BAR, DEFAULT_DRAG_FADE_DURATION);
         } else {
             mDeferOnDragEnd = false;
         }
     }
 
+    /**
+     * @return the bounds of the QSB search bar.
+     */
     public Rect getSearchBarBounds() {
-        if (mQSBSearchBar != null) {
+        if (mQSB != null) {
             final int[] pos = new int[2];
-            mQSBSearchBar.getLocationOnScreen(pos);
+            mQSB.getLocationOnScreen(pos);
 
             final Rect rect = new Rect();
             rect.left = pos[0];
             rect.top = pos[1];
-            rect.right = pos[0] + mQSBSearchBar.getWidth();
-            rect.bottom = pos[1] + mQSBSearchBar.getHeight();
+            rect.right = pos[0] + mQSB.getWidth();
+            rect.bottom = pos[1] + mQSB.getHeight();
             return rect;
         } else {
             return null;
@@ -230,8 +246,8 @@ public class SearchDropTargetBar extends FrameLayout implements DragController.D
     }
 
     public void enableAccessibleDrag(boolean enable) {
-        if (mQSBSearchBar != null) {
-            mQSBSearchBar.setVisibility(enable ? View.GONE : View.VISIBLE);
+        if (mQSB != null) {
+            mQSB.setVisibility(enable ? View.GONE : View.VISIBLE);
         }
         mInfoDropTarget.enableAccessibleDrag(enable);
         mDeleteDropTarget.enableAccessibleDrag(enable);