Merge "Fix back popping the back stack too much."
diff --git a/api/current.xml b/api/current.xml
index 64ac66f..2c88f11 100644
--- a/api/current.xml
+++ b/api/current.xml
@@ -1482,6 +1482,28 @@
  visibility="public"
 >
 </field>
+<field name="animator_fade_in"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="17432609"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
+<field name="animator_fade_out"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="17432610"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="anticipate_interpolator"
  type="int"
  transient="false"
@@ -4310,6 +4332,50 @@
  visibility="public"
 >
 </field>
+<field name="fragmentCloseEnterAnimation"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="16843561"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
+<field name="fragmentCloseExitAnimation"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="16843562"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
+<field name="fragmentOpenEnterAnimation"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="16843559"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
+<field name="fragmentOpenExitAnimation"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="16843560"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="freezesText"
  type="int"
  transient="false"
@@ -10580,6 +10646,17 @@
  visibility="public"
 >
 </field>
+<field name="windowActionBarOverlay"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="16843558"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="windowActionBarStyle"
  type="int"
  transient="false"
@@ -20795,6 +20872,19 @@
 <parameter name="sequenceItems" type="android.animation.Animatable...">
 </parameter>
 </method>
+<method name="setTarget"
+ return="void"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+<parameter name="target" type="java.lang.Object">
+</parameter>
+</method>
 </class>
 <class name="Sequencer.Builder"
  extends="java.lang.Object"
@@ -20936,6 +21026,17 @@
  visibility="public"
 >
 </method>
+<method name="getHeight"
+ return="int"
+ abstract="true"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</method>
 <method name="getNavigationMode"
  return="int"
  abstract="true"
@@ -20980,6 +21081,17 @@
  visibility="public"
 >
 </method>
+<method name="hide"
+ return="void"
+ abstract="true"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</method>
 <method name="insertTab"
  return="void"
  abstract="true"
@@ -20995,6 +21107,17 @@
 <parameter name="position" type="int">
 </parameter>
 </method>
+<method name="isShowing"
+ return="boolean"
+ abstract="true"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</method>
 <method name="newTab"
  return="android.app.ActionBar.Tab"
  abstract="true"
@@ -21287,6 +21410,17 @@
 <parameter name="resId" type="int">
 </parameter>
 </method>
+<method name="show"
+ return="void"
+ abstract="true"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</method>
 <field name="DISPLAY_HIDE_HOME"
  type="int"
  transient="false"
@@ -27850,8 +27984,8 @@
 <parameter name="savedInstanceState" type="android.os.Bundle">
 </parameter>
 </method>
-<method name="onCreateAnimation"
- return="android.view.animation.Animation"
+<method name="onCreateAnimatable"
+ return="android.animation.Animatable"
  abstract="false"
  native="false"
  synchronized="false"
@@ -28357,39 +28491,6 @@
 <parameter name="fragment" type="android.app.Fragment">
 </parameter>
 </method>
-<field name="TRANSIT_ACTIVITY_CLOSE"
- type="int"
- transient="false"
- volatile="false"
- value="8199"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
-<field name="TRANSIT_ACTIVITY_OPEN"
- type="int"
- transient="false"
- volatile="false"
- value="4102"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
-<field name="TRANSIT_ENTER"
- type="int"
- transient="false"
- volatile="false"
- value="4097"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
 <field name="TRANSIT_ENTER_MASK"
  type="int"
  transient="false"
@@ -28401,17 +28502,6 @@
  visibility="public"
 >
 </field>
-<field name="TRANSIT_EXIT"
- type="int"
- transient="false"
- volatile="false"
- value="8194"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
 <field name="TRANSIT_EXIT_MASK"
  type="int"
  transient="false"
@@ -28423,11 +28513,22 @@
  visibility="public"
 >
 </field>
-<field name="TRANSIT_HIDE"
+<field name="TRANSIT_FRAGMENT_CLOSE"
  type="int"
  transient="false"
  volatile="false"
- value="8196"
+ value="8194"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
+<field name="TRANSIT_FRAGMENT_OPEN"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="4097"
  static="true"
  final="true"
  deprecated="not deprecated"
@@ -28445,72 +28546,6 @@
  visibility="public"
 >
 </field>
-<field name="TRANSIT_PREVIEW_DONE"
- type="int"
- transient="false"
- volatile="false"
- value="5"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
-<field name="TRANSIT_SHOW"
- type="int"
- transient="false"
- volatile="false"
- value="4099"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
-<field name="TRANSIT_TASK_CLOSE"
- type="int"
- transient="false"
- volatile="false"
- value="8201"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
-<field name="TRANSIT_TASK_OPEN"
- type="int"
- transient="false"
- volatile="false"
- value="4104"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
-<field name="TRANSIT_TASK_TO_BACK"
- type="int"
- transient="false"
- volatile="false"
- value="8203"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
-<field name="TRANSIT_TASK_TO_FRONT"
- type="int"
- transient="false"
- volatile="false"
- value="4106"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
 <field name="TRANSIT_UNSET"
  type="int"
  transient="false"
@@ -28522,50 +28557,6 @@
  visibility="public"
 >
 </field>
-<field name="TRANSIT_WALLPAPER_CLOSE"
- type="int"
- transient="false"
- volatile="false"
- value="8204"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
-<field name="TRANSIT_WALLPAPER_INTRA_CLOSE"
- type="int"
- transient="false"
- volatile="false"
- value="8207"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
-<field name="TRANSIT_WALLPAPER_INTRA_OPEN"
- type="int"
- transient="false"
- volatile="false"
- value="4110"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
-<field name="TRANSIT_WALLPAPER_OPEN"
- type="int"
- transient="false"
- volatile="false"
- value="4109"
- static="true"
- final="true"
- deprecated="not deprecated"
- visibility="public"
->
-</field>
 </interface>
 <class name="Instrumentation"
  extends="java.lang.Object"
@@ -201148,7 +201139,7 @@
  visibility="public"
 >
 </field>
-<field name="FEATURE_ACTION_MODE_OVERLAY"
+<field name="FEATURE_ACTION_BAR_OVERLAY"
  type="int"
  transient="false"
  volatile="false"
@@ -201159,6 +201150,17 @@
  visibility="public"
 >
 </field>
+<field name="FEATURE_ACTION_MODE_OVERLAY"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="10"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="FEATURE_CONTEXT_MENU"
  type="int"
  transient="false"
@@ -201185,7 +201187,7 @@
  type="int"
  transient="false"
  volatile="false"
- value="10"
+ value="11"
  static="true"
  final="true"
  deprecated="not deprecated"
diff --git a/core/java/android/animation/Sequencer.java b/core/java/android/animation/Sequencer.java
index 3278a3e..2406d8a 100644
--- a/core/java/android/animation/Sequencer.java
+++ b/core/java/android/animation/Sequencer.java
@@ -140,6 +140,24 @@
     }
 
     /**
+     * Sets the target object for all current {@link #getChildAnimations() child animations}
+     * of this Sequencer that take targets ({@link android.animation.PropertyAnimator} and
+     * Sequencer).
+     *
+     * @param target The object being animated
+     */
+    public void setTarget(Object target) {
+        for (Node node : mNodes) {
+            Animatable animation = node.animation;
+            if (animation instanceof Sequencer) {
+                ((Sequencer)animation).setTarget(target);
+            } else if (animation instanceof PropertyAnimator) {
+                ((PropertyAnimator)animation).setTarget(target);
+            }
+        }
+    }
+
+    /**
      * This method creates a <code>Builder</code> object, which is used to
      * set up playing constraints. This initial <code>play()</code> method
      * tells the <code>Builder</code> the animation that is the dependency for
diff --git a/core/java/android/app/ActionBar.java b/core/java/android/app/ActionBar.java
index d33494b..38086f0 100644
--- a/core/java/android/app/ActionBar.java
+++ b/core/java/android/app/ActionBar.java
@@ -18,6 +18,7 @@
 
 import android.graphics.drawable.Drawable;
 import android.view.View;
+import android.view.Window;
 import android.widget.SpinnerAdapter;
 
 /**
@@ -383,6 +384,34 @@
     public abstract void selectTab(Tab tab);
 
     /**
+     * Retrieve the current height of the ActionBar.
+     *
+     * @return The ActionBar's height
+     */
+    public abstract int getHeight();
+
+    /**
+     * Show the ActionBar if it is not currently showing.
+     * If the window hosting the ActionBar does not have the feature
+     * {@link Window#FEATURE_ACTION_BAR_OVERLAY} it will resize application
+     * content to fit the new space available.
+     */
+    public abstract void show();
+
+    /**
+     * Hide the ActionBar if it is not currently showing.
+     * If the window hosting the ActionBar does not have the feature
+     * {@link Window#FEATURE_ACTION_BAR_OVERLAY} it will resize application
+     * content to fit the new space available.
+     */
+    public abstract void hide();
+
+    /**
+     * @return <code>true</code> if the ActionBar is showing, <code>false</code> otherwise.
+     */
+    public abstract boolean isShowing();
+
+    /**
      * Callback interface for ActionBar navigation events. 
      */
     public interface NavigationCallback {
diff --git a/core/java/android/app/Fragment.java b/core/java/android/app/Fragment.java
index 0bb200c..2f61345 100644
--- a/core/java/android/app/Fragment.java
+++ b/core/java/android/app/Fragment.java
@@ -16,6 +16,7 @@
 
 package android.app;
 
+import android.animation.Animatable;
 import android.content.ComponentCallbacks;
 import android.content.Context;
 import android.content.Intent;
@@ -35,7 +36,6 @@
 import android.view.ViewGroup;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.View.OnCreateContextMenuListener;
-import android.view.animation.Animation;
 import android.widget.AdapterView;
 
 import java.lang.reflect.InvocationTargetException;
@@ -495,7 +495,10 @@
         mCalled = true;
     }
     
-    public Animation onCreateAnimation(int transit, boolean enter, int nextAnim) {
+    /**
+     * Called when a fragment loads an animation.
+     */
+    public Animatable onCreateAnimatable(int transit, boolean enter, int nextAnim) {
         return null;
     }
     
diff --git a/core/java/android/app/FragmentManager.java b/core/java/android/app/FragmentManager.java
index 35b4610..54e37b0 100644
--- a/core/java/android/app/FragmentManager.java
+++ b/core/java/android/app/FragmentManager.java
@@ -16,6 +16,9 @@
 
 package android.app;
 
+import android.animation.Animatable;
+import android.animation.PropertyAnimator;
+import android.animation.Sequencer;
 import android.content.res.TypedArray;
 import android.os.Bundle;
 import android.os.Handler;
@@ -28,7 +31,6 @@
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
-import android.view.animation.Animation;
 import android.view.animation.AnimationUtils;
 
 import java.util.ArrayList;
@@ -106,16 +108,16 @@
         }
     };
     
-    Animation loadAnimation(Fragment fragment, int transit, boolean enter,
+    Animatable loadAnimatable(Fragment fragment, int transit, boolean enter,
             int transitionStyle) {
-        Animation animObj = fragment.onCreateAnimation(transitionStyle, enter,
+        Animatable animObj = fragment.onCreateAnimatable(transit, enter,
                 fragment.mNextAnim);
         if (animObj != null) {
             return animObj;
         }
         
         if (fragment.mNextAnim != 0) {
-            Animation anim = AnimationUtils.loadAnimation(mActivity, fragment.mNextAnim);
+            Animatable anim = AnimationUtils.loadAnimator(mActivity, fragment.mNextAnim);
             if (anim != null) {
                 return anim;
             }
@@ -138,7 +140,7 @@
         }
         
         TypedArray attrs = mActivity.obtainStyledAttributes(transitionStyle,
-                com.android.internal.R.styleable.WindowAnimation);
+                com.android.internal.R.styleable.FragmentAnimation);
         int anim = attrs.getResourceId(styleIndex, 0);
         attrs.recycle();
         
@@ -146,7 +148,7 @@
             return null;
         }
         
-        return AnimationUtils.loadAnimation(mActivity, anim);
+        return AnimationUtils.loadAnimator(mActivity, anim);
     }
     
     void moveToState(Fragment f, int newState, int transit, int transitionStyle) {
@@ -208,10 +210,15 @@
                             if (f.mView != null) {
                                 f.mView.setSaveFromParentEnabled(false);
                                 if (container != null) {
-                                    Animation anim = loadAnimation(f, transit, true,
+                                    Animatable anim = loadAnimatable(f, transit, true,
                                             transitionStyle);
                                     if (anim != null) {
-                                        f.mView.setAnimation(anim);
+                                        if (anim instanceof Sequencer) {
+                                            ((Sequencer)anim).setTarget(f.mView);
+                                        } else if (anim instanceof PropertyAnimator) {
+                                            ((PropertyAnimator)anim).setTarget(f.mView);
+                                        }
+                                        anim.start();
                                     }
                                     container.addView(f.mView);
                                     f.restoreViewState();
@@ -290,10 +297,15 @@
                             }
                             if (f.mContainer != null) {
                                 if (mCurState > Fragment.INITIALIZING) {
-                                    Animation anim = loadAnimation(f, transit, false,
+                                    Animatable anim = loadAnimatable(f, transit, true,
                                             transitionStyle);
                                     if (anim != null) {
-                                        f.mView.setAnimation(anim);
+                                        if (anim instanceof Sequencer) {
+                                            ((Sequencer)anim).setTarget(f.mView);
+                                        } else if (anim instanceof PropertyAnimator) {
+                                            ((PropertyAnimator)anim).setTarget(f.mView);
+                                        }
+                                        anim.start();
                                     }
                                 }
                                 f.mContainer.removeView(f.mView);
@@ -420,10 +432,15 @@
         if (!fragment.mHidden) {
             fragment.mHidden = true;
             if (fragment.mView != null) {
-                Animation anim = loadAnimation(fragment, transition, false,
+                Animatable anim = loadAnimatable(fragment, transition, true,
                         transitionStyle);
                 if (anim != null) {
-                    fragment.mView.setAnimation(anim);
+                    if (anim instanceof Sequencer) {
+                        ((Sequencer)anim).setTarget(fragment.mView);
+                    } else if (anim instanceof PropertyAnimator) {
+                        ((PropertyAnimator)anim).setTarget(fragment.mView);
+                    }
+                    anim.start();
                 }
                 fragment.mView.setVisibility(View.GONE);
             }
@@ -439,10 +456,15 @@
         if (fragment.mHidden) {
             fragment.mHidden = false;
             if (fragment.mView != null) {
-                Animation anim = loadAnimation(fragment, transition, true,
+                Animatable anim = loadAnimatable(fragment, transition, true,
                         transitionStyle);
                 if (anim != null) {
-                    fragment.mView.setAnimation(anim);
+                    if (anim instanceof Sequencer) {
+                        ((Sequencer)anim).setTarget(fragment.mView);
+                    } else if (anim instanceof PropertyAnimator) {
+                        ((PropertyAnimator)anim).setTarget(fragment.mView);
+                    }
+                    anim.start();
                 }
                 fragment.mView.setVisibility(View.VISIBLE);
             }
@@ -981,47 +1003,11 @@
     public static int reverseTransit(int transit) {
         int rev = 0;
         switch (transit) {
-            case FragmentTransaction.TRANSIT_ENTER:
-                rev = FragmentTransaction.TRANSIT_EXIT;
+            case FragmentTransaction.TRANSIT_FRAGMENT_OPEN:
+                rev = FragmentTransaction.TRANSIT_FRAGMENT_CLOSE;
                 break;
-            case FragmentTransaction.TRANSIT_EXIT:
-                rev = FragmentTransaction.TRANSIT_ENTER;
-                break;
-            case FragmentTransaction.TRANSIT_SHOW:
-                rev = FragmentTransaction.TRANSIT_HIDE;
-                break;
-            case FragmentTransaction.TRANSIT_HIDE:
-                rev = FragmentTransaction.TRANSIT_SHOW;
-                break;
-            case FragmentTransaction.TRANSIT_ACTIVITY_OPEN:
-                rev = FragmentTransaction.TRANSIT_ACTIVITY_CLOSE;
-                break;
-            case FragmentTransaction.TRANSIT_ACTIVITY_CLOSE:
-                rev = FragmentTransaction.TRANSIT_ACTIVITY_OPEN;
-                break;
-            case FragmentTransaction.TRANSIT_TASK_OPEN:
-                rev = FragmentTransaction.TRANSIT_TASK_CLOSE;
-                break;
-            case FragmentTransaction.TRANSIT_TASK_CLOSE:
-                rev = FragmentTransaction.TRANSIT_TASK_OPEN;
-                break;
-            case FragmentTransaction.TRANSIT_TASK_TO_FRONT:
-                rev = FragmentTransaction.TRANSIT_TASK_TO_BACK;
-                break;
-            case FragmentTransaction.TRANSIT_TASK_TO_BACK:
-                rev = FragmentTransaction.TRANSIT_TASK_TO_FRONT;
-                break;
-            case FragmentTransaction.TRANSIT_WALLPAPER_OPEN:
-                rev = FragmentTransaction.TRANSIT_WALLPAPER_CLOSE;
-                break;
-            case FragmentTransaction.TRANSIT_WALLPAPER_CLOSE:
-                rev = FragmentTransaction.TRANSIT_WALLPAPER_OPEN;
-                break;
-            case FragmentTransaction.TRANSIT_WALLPAPER_INTRA_OPEN:
-                rev = FragmentTransaction.TRANSIT_WALLPAPER_INTRA_CLOSE;
-                break;
-            case FragmentTransaction.TRANSIT_WALLPAPER_INTRA_CLOSE:
-                rev = FragmentTransaction.TRANSIT_WALLPAPER_INTRA_OPEN;
+            case FragmentTransaction.TRANSIT_FRAGMENT_CLOSE:
+                rev = FragmentTransaction.TRANSIT_FRAGMENT_OPEN;
                 break;
         }
         return rev;
@@ -1031,67 +1017,15 @@
     public static int transitToStyleIndex(int transit, boolean enter) {
         int animAttr = -1;
         switch (transit) {
-            case FragmentTransaction.TRANSIT_ENTER:
-                animAttr = com.android.internal.R.styleable.WindowAnimation_windowEnterAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_EXIT:
-                animAttr = com.android.internal.R.styleable.WindowAnimation_windowExitAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_SHOW:
-                animAttr = com.android.internal.R.styleable.WindowAnimation_windowShowAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_HIDE:
-                animAttr = com.android.internal.R.styleable.WindowAnimation_windowHideAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_ACTIVITY_OPEN:
+            case FragmentTransaction.TRANSIT_FRAGMENT_OPEN:
                 animAttr = enter
-                        ? com.android.internal.R.styleable.WindowAnimation_activityOpenEnterAnimation
-                        : com.android.internal.R.styleable.WindowAnimation_activityOpenExitAnimation;
+                    ? com.android.internal.R.styleable.FragmentAnimation_fragmentOpenEnterAnimation
+                    : com.android.internal.R.styleable.FragmentAnimation_fragmentOpenExitAnimation;
                 break;
-            case FragmentTransaction.TRANSIT_ACTIVITY_CLOSE:
+            case FragmentTransaction.TRANSIT_FRAGMENT_CLOSE:
                 animAttr = enter
-                        ? com.android.internal.R.styleable.WindowAnimation_activityCloseEnterAnimation
-                        : com.android.internal.R.styleable.WindowAnimation_activityCloseExitAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_TASK_OPEN:
-                animAttr = enter
-                        ? com.android.internal.R.styleable.WindowAnimation_taskOpenEnterAnimation
-                        : com.android.internal.R.styleable.WindowAnimation_taskOpenExitAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_TASK_CLOSE:
-                animAttr = enter
-                        ? com.android.internal.R.styleable.WindowAnimation_taskCloseEnterAnimation
-                        : com.android.internal.R.styleable.WindowAnimation_taskCloseExitAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_TASK_TO_FRONT:
-                animAttr = enter
-                        ? com.android.internal.R.styleable.WindowAnimation_taskToFrontEnterAnimation
-                        : com.android.internal.R.styleable.WindowAnimation_taskToFrontExitAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_TASK_TO_BACK:
-                animAttr = enter
-                        ? com.android.internal.R.styleable.WindowAnimation_taskToBackEnterAnimation
-                        : com.android.internal.R.styleable.WindowAnimation_taskToBackExitAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_WALLPAPER_OPEN:
-                animAttr = enter
-                        ? com.android.internal.R.styleable.WindowAnimation_wallpaperOpenEnterAnimation
-                        : com.android.internal.R.styleable.WindowAnimation_wallpaperOpenExitAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_WALLPAPER_CLOSE:
-                animAttr = enter
-                        ? com.android.internal.R.styleable.WindowAnimation_wallpaperCloseEnterAnimation
-                        : com.android.internal.R.styleable.WindowAnimation_wallpaperCloseExitAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_WALLPAPER_INTRA_OPEN:
-                animAttr = enter
-                        ? com.android.internal.R.styleable.WindowAnimation_wallpaperIntraOpenEnterAnimation
-                        : com.android.internal.R.styleable.WindowAnimation_wallpaperIntraOpenExitAnimation;
-                break;
-            case FragmentTransaction.TRANSIT_WALLPAPER_INTRA_CLOSE:
-                animAttr = enter
-                        ? com.android.internal.R.styleable.WindowAnimation_wallpaperIntraCloseEnterAnimation
-                        : com.android.internal.R.styleable.WindowAnimation_wallpaperIntraCloseExitAnimation;
+                    ? com.android.internal.R.styleable.FragmentAnimation_fragmentCloseEnterAnimation
+                    : com.android.internal.R.styleable.FragmentAnimation_fragmentCloseExitAnimation;
                 break;
         }
         return animAttr;
diff --git a/core/java/android/app/FragmentTransaction.java b/core/java/android/app/FragmentTransaction.java
index 65cf85c..04598a3 100644
--- a/core/java/android/app/FragmentTransaction.java
+++ b/core/java/android/app/FragmentTransaction.java
@@ -100,47 +100,11 @@
     public final int TRANSIT_UNSET = -1;
     /** No animation for transition. */
     public final int TRANSIT_NONE = 0;
-    /** Window has been added to the screen. */
-    public final int TRANSIT_ENTER = 1 | TRANSIT_ENTER_MASK;
-    /** Window has been removed from the screen. */
-    public final int TRANSIT_EXIT = 2 | TRANSIT_EXIT_MASK;
-    /** Window has been made visible. */
-    public final int TRANSIT_SHOW = 3 | TRANSIT_ENTER_MASK;
-    /** Window has been made invisible. */
-    public final int TRANSIT_HIDE = 4 | TRANSIT_EXIT_MASK;
-    /** The "application starting" preview window is no longer needed, and will
-     * animate away to show the real window. */
-    public final int TRANSIT_PREVIEW_DONE = 5;
-    /** A window in a new activity is being opened on top of an existing one
-     * in the same task. */
-    public final int TRANSIT_ACTIVITY_OPEN = 6 | TRANSIT_ENTER_MASK;
-    /** The window in the top-most activity is being closed to reveal the
-     * previous activity in the same task. */
-    public final int TRANSIT_ACTIVITY_CLOSE = 7 | TRANSIT_EXIT_MASK;
-    /** A window in a new task is being opened on top of an existing one
-     * in another activity's task. */
-    public final int TRANSIT_TASK_OPEN = 8 | TRANSIT_ENTER_MASK;
-    /** A window in the top-most activity is being closed to reveal the
-     * previous activity in a different task. */
-    public final int TRANSIT_TASK_CLOSE = 9 | TRANSIT_EXIT_MASK;
-    /** A window in an existing task is being displayed on top of an existing one
-     * in another activity's task. */
-    public final int TRANSIT_TASK_TO_FRONT = 10 | TRANSIT_ENTER_MASK;
-    /** A window in an existing task is being put below all other tasks. */
-    public final int TRANSIT_TASK_TO_BACK = 11 | TRANSIT_EXIT_MASK;
-    /** A window in a new activity that doesn't have a wallpaper is being
-     * opened on top of one that does, effectively closing the wallpaper. */
-    public final int TRANSIT_WALLPAPER_CLOSE = 12 | TRANSIT_EXIT_MASK;
-    /** A window in a new activity that does have a wallpaper is being
-     * opened on one that didn't, effectively opening the wallpaper. */
-    public final int TRANSIT_WALLPAPER_OPEN = 13 | TRANSIT_ENTER_MASK;
-    /** A window in a new activity is being opened on top of an existing one,
-     * and both are on top of the wallpaper. */
-    public final int TRANSIT_WALLPAPER_INTRA_OPEN = 14 | TRANSIT_ENTER_MASK;
-    /** The window in the top-most activity is being closed to reveal the
-     * previous activity, and both are on top of he wallpaper. */
-    public final int TRANSIT_WALLPAPER_INTRA_CLOSE = 15 | TRANSIT_EXIT_MASK;
-    
+    /** Fragment is being added */
+    public final int TRANSIT_FRAGMENT_OPEN = 1 | TRANSIT_ENTER_MASK;
+    /** Fragment is being removed */
+    public final int TRANSIT_FRAGMENT_CLOSE = 2 | TRANSIT_EXIT_MASK;
+
     public FragmentTransaction setCustomAnimations(int enter, int exit);
     
     public FragmentTransaction setTransition(int transit);
diff --git a/core/java/android/os/Looper.java b/core/java/android/os/Looper.java
index 69b3540..a9d7342 100644
--- a/core/java/android/os/Looper.java
+++ b/core/java/android/os/Looper.java
@@ -180,6 +180,11 @@
         return mThread;
     }
     
+    /** @hide */
+    public MessageQueue getQueue() {
+        return mQueue;
+    }
+    
     public void dump(Printer pw, String prefix) {
         pw.println(prefix + this);
         pw.println(prefix + "mRun=" + mRun);
diff --git a/core/java/android/preference/PreferenceActivity.java b/core/java/android/preference/PreferenceActivity.java
index e13c3e8..114f67d 100644
--- a/core/java/android/preference/PreferenceActivity.java
+++ b/core/java/android/preference/PreferenceActivity.java
@@ -125,6 +125,9 @@
     // Back will then return RESULT_CANCELED and Next RESULT_OK
     private static final String EXTRA_PREFS_SHOW_BUTTON_BAR = "extra_prefs_show_button_bar";
 
+    // add a Skip button?
+    private static final String EXTRA_PREFS_SHOW_SKIP = "extra_prefs_show_skip";
+
     // specify custom text for the Back or Next buttons, or cause a button to not appear
     // at all by setting it to null
     private static final String EXTRA_PREFS_SET_NEXT_TEXT = "extra_prefs_set_next_text";
@@ -307,6 +310,13 @@
                     finish();
                 }
             });
+            Button skipButton = (Button)findViewById(com.android.internal.R.id.skip_button);
+            skipButton.setOnClickListener(new OnClickListener() {
+                public void onClick(View v) {
+                    setResult(RESULT_OK);
+                    finish();
+                }
+            });
             mNextButton = (Button)findViewById(com.android.internal.R.id.next_button);
             mNextButton.setOnClickListener(new OnClickListener() {
                 public void onClick(View v) {
@@ -334,6 +344,9 @@
                     backButton.setText(buttonText);
                 }
             }
+            if (intent.getBooleanExtra(EXTRA_PREFS_SHOW_SKIP, false)) {
+                skipButton.setVisibility(View.VISIBLE);
+            }
         }
     }
 
diff --git a/core/java/android/view/HardwareRenderer.java b/core/java/android/view/HardwareRenderer.java
index cd6b820..44bd6d4 100644
--- a/core/java/android/view/HardwareRenderer.java
+++ b/core/java/android/view/HardwareRenderer.java
@@ -300,7 +300,6 @@
              */
             if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
                 throw new RuntimeException("eglMakeCurrent failed");
-                
             }
 
             return mEglContext.getGL();
@@ -374,6 +373,15 @@
                 attachInfo.mIgnoreDirtyState = true;
                 view.mPrivateFlags |= View.DRAWN;
 
+                // TODO: Don't check the current context when we have one per UI thread
+                // TODO: Use a threadlocal flag to know whether the surface has changed
+                if (mEgl.eglGetCurrentContext() != mEglContext ||
+                        mEgl.eglGetCurrentSurface(EGL10.EGL_DRAW) != mEglSurface) {
+                    if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
+                        throw new RuntimeException("eglMakeCurrent failed");
+                    }
+                }
+
                 onPreDraw();
 
                 Canvas canvas = mCanvas;
diff --git a/core/java/android/view/IWindowManager.aidl b/core/java/android/view/IWindowManager.aidl
index d6b9212..e86e3bf 100644
--- a/core/java/android/view/IWindowManager.aidl
+++ b/core/java/android/view/IWindowManager.aidl
@@ -28,6 +28,7 @@
 import android.view.KeyEvent;
 import android.view.InputEvent;
 import android.view.MotionEvent;
+import android.view.InputChannel;
 
 /**
  * System private interface to the window manager.
@@ -119,6 +120,7 @@
     int getKeycodeStateForDevice(int devid, int sw);
     int getTrackballKeycodeState(int sw);
     int getDPadKeycodeState(int sw);
+    InputChannel monitorInput(String inputChannelName);
     
     // Report whether the hardware supports the given keys; returns true if successful
     boolean hasKeys(in int[] keycodes, inout boolean[] keyExists);
diff --git a/core/java/android/view/ViewRoot.java b/core/java/android/view/ViewRoot.java
index 8abbf58..faa4783 100644
--- a/core/java/android/view/ViewRoot.java
+++ b/core/java/android/view/ViewRoot.java
@@ -33,6 +33,7 @@
 import android.util.DisplayMetrics;
 import android.util.Log;
 import android.util.EventLog;
+import android.util.Slog;
 import android.util.SparseArray;
 import android.view.View.MeasureSpec;
 import android.view.accessibility.AccessibilityEvent;
@@ -1719,7 +1720,7 @@
             if (LOCAL_LOGV) Log.v(
                 TAG, "Dispatching key "
                 + msg.obj + " to " + mView);
-            deliverKeyEvent((KeyEvent)msg.obj, true);
+            deliverKeyEvent((KeyEvent)msg.obj, msg.arg1 != 0);
             break;
         case DISPATCH_POINTER: {
             MotionEvent event = (MotionEvent) msg.obj;
@@ -1860,9 +1861,14 @@
     }
     
     private void finishKeyEvent(KeyEvent event) {
+        if (LOCAL_LOGV) Log.v(TAG, "Telling window manager key is finished");
+
         if (mFinishedCallback != null) {
             mFinishedCallback.run();
             mFinishedCallback = null;
+        } else {
+            Slog.w(TAG, "Attempted to tell the input queue that the current key event "
+                    + "is finished but there is no key event actually in progress.");
         }
     }
     
@@ -2321,8 +2327,6 @@
         boolean handled = mView == null || mView.dispatchKeyEventPreIme(event);
         if (handled) {
             if (sendDone) {
-                if (LOCAL_LOGV) Log.v(
-                    TAG, "Telling window manager key is finished");
                 finishKeyEvent(event);
             }
             return;
@@ -2353,8 +2357,6 @@
             if (!handled) {
                 deliverKeyEventToViewHierarchy(event, sendDone);
             } else if (sendDone) {
-                if (LOCAL_LOGV) Log.v(
-                        TAG, "Telling window manager key is finished");
                 finishKeyEvent(event);
             } else {
                 Log.w(TAG, "handleFinishedEvent(seq=" + seq
@@ -2428,8 +2430,6 @@
 
         } finally {
             if (sendDone) {
-                if (LOCAL_LOGV) Log.v(
-                    TAG, "Telling window manager key is finished");
                 finishKeyEvent(event);
             }
             // Let the exception fall through -- the looper will catch
@@ -2613,9 +2613,14 @@
     
     private final InputHandler mInputHandler = new InputHandler() {
         public void handleKey(KeyEvent event, Runnable finishedCallback) {
+            if (mFinishedCallback != null) {
+                Slog.w(TAG, "Received a new key event from the input queue but there is "
+                        + "already an unfinished key event in progress.");
+            }
+
             mFinishedCallback = finishedCallback;
 
-            dispatchKey(event);
+            dispatchKey(event, true);
         }
 
         public void handleMotion(MotionEvent event, Runnable finishedCallback) {
@@ -2626,9 +2631,13 @@
     };
 
     public void dispatchKey(KeyEvent event) {
-        if (event.getAction() == KeyEvent.ACTION_DOWN) {
-            //noinspection ConstantConditions
-            if (false && event.getKeyCode() == KeyEvent.KEYCODE_CAMERA) {
+        dispatchKey(event, false);
+    }
+
+    private void dispatchKey(KeyEvent event, boolean sendDone) {
+        //noinspection ConstantConditions
+        if (false && event.getAction() == KeyEvent.ACTION_DOWN) {
+            if (event.getKeyCode() == KeyEvent.KEYCODE_CAMERA) {
                 if (DBG) Log.d("keydisp", "===================================================");
                 if (DBG) Log.d("keydisp", "Focused view Hierarchy is:");
 
@@ -2640,6 +2649,7 @@
 
         Message msg = obtainMessage(DISPATCH_KEY);
         msg.obj = event;
+        msg.arg1 = sendDone ? 1 : 0;
 
         if (LOCAL_LOGV) Log.v(
             TAG, "sending key " + event + " to " + mView);
diff --git a/core/java/android/view/Window.java b/core/java/android/view/Window.java
index f32ff77..36f6bb2 100644
--- a/core/java/android/view/Window.java
+++ b/core/java/android/view/Window.java
@@ -64,14 +64,24 @@
      */
     public static final int FEATURE_ACTION_BAR = 8;
     /**
+     * Flag for requesting an Action Bar that overlays window content.
+     * Normally an Action Bar will sit in the space above window content, but if this
+     * feature is requested along with {@link #FEATURE_ACTION_BAR} it will be layered over
+     * the window content itself. This is useful if you would like your app to have more control
+     * over how the Action Bar is displayed, such as letting application content scroll beneath
+     * an Action Bar with a transparent background or otherwise displaying a transparent/translucent
+     * Action Bar over application content.
+     */
+    public static final int FEATURE_ACTION_BAR_OVERLAY = 9;
+    /**
      * Flag for specifying the behavior of action modes when an Action Bar is not present.
      * If overlay is enabled, the action mode UI will be allowed to cover existing window content.
      */
-    public static final int FEATURE_ACTION_MODE_OVERLAY = 9;
+    public static final int FEATURE_ACTION_MODE_OVERLAY = 10;
     /**
      * Flag for requesting this window to be hardware accelerated, if possible. 
      */
-    public static final int FEATURE_HARDWARE_ACCELERATED = 10;
+    public static final int FEATURE_HARDWARE_ACCELERATED = 11;
     /** Flag for setting the progress bar's visibility to VISIBLE */
     public static final int PROGRESS_VISIBILITY_ON = -1;
     /** Flag for setting the progress bar's visibility to GONE */
diff --git a/core/java/android/view/WindowManagerPolicy.java b/core/java/android/view/WindowManagerPolicy.java
index 33757f0..659f9cd 100644
--- a/core/java/android/view/WindowManagerPolicy.java
+++ b/core/java/android/view/WindowManagerPolicy.java
@@ -779,11 +779,6 @@
      */
     public void enableScreenAfterBoot();
     
-    /**
-     * Called every time the window manager is dispatching a pointer event.
-     */
-    public void dispatchedPointerEventLw(MotionEvent ev, int targetX, int targetY);
-    
     public void setCurrentOrientationLw(int newOrientation);
     
     /**
diff --git a/core/java/android/widget/ListPopupWindow.java b/core/java/android/widget/ListPopupWindow.java
index 5c34c2c..35e0603 100644
--- a/core/java/android/widget/ListPopupWindow.java
+++ b/core/java/android/widget/ListPopupWindow.java
@@ -33,7 +33,7 @@
 
 /**
  * A ListPopupWindow anchors itself to a host view and displays a
- * list of choices. When one is selected, the popup is dismissed.
+ * list of choices.
  * 
  * <p>ListPopupWindow contains a number of tricky behaviors surrounding
  * positioning, scrolling parents to fit the dropdown, interacting
diff --git a/core/java/com/android/internal/app/ActionBarImpl.java b/core/java/com/android/internal/app/ActionBarImpl.java
index 6b52409..dd2ad6c 100644
--- a/core/java/com/android/internal/app/ActionBarImpl.java
+++ b/core/java/com/android/internal/app/ActionBarImpl.java
@@ -397,6 +397,27 @@
         trans.commit();
     }
 
+    @Override
+    public int getHeight() {
+        return mActionView.getHeight();
+    }
+
+    @Override
+    public void show() {
+        // TODO animate!
+        mAnimatorView.setVisibility(View.VISIBLE);
+    }
+
+    @Override
+    public void hide() {
+        // TODO animate!
+        mAnimatorView.setVisibility(View.GONE);
+    }
+
+    public boolean isShowing() {
+        return mAnimatorView.getVisibility() == View.VISIBLE;
+    }
+
     /**
      * @hide 
      */
@@ -510,6 +531,8 @@
         }
 
         public void onMenuModeChange(MenuBuilder menu) {
+            invalidate();
+            mUpperContextView.showOverflowMenu();
         }
     }
 
diff --git a/core/java/com/android/internal/view/StandaloneActionMode.java b/core/java/com/android/internal/view/StandaloneActionMode.java
index e6d6ba0..ab80c58 100644
--- a/core/java/com/android/internal/view/StandaloneActionMode.java
+++ b/core/java/com/android/internal/view/StandaloneActionMode.java
@@ -135,5 +135,7 @@
     }
 
     public void onMenuModeChange(MenuBuilder menu) {
+        invalidate();
+        mContextView.showOverflowMenu();
     }
 }
diff --git a/core/java/com/android/internal/view/menu/ActionMenuView.java b/core/java/com/android/internal/view/menu/ActionMenuView.java
index 1357251..cb5f179 100644
--- a/core/java/com/android/internal/view/menu/ActionMenuView.java
+++ b/core/java/com/android/internal/view/menu/ActionMenuView.java
@@ -20,6 +20,7 @@
 import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.util.AttributeSet;
+import android.view.Gravity;
 import android.view.ViewGroup;
 import android.widget.ImageButton;
 import android.widget.LinearLayout;
@@ -82,6 +83,7 @@
         if (p instanceof LayoutParams) {
             LayoutParams lp = (LayoutParams) p;
             return lp.leftMargin == mItemMargin && lp.rightMargin == mItemMargin &&
+                    lp.gravity == Gravity.CENTER_VERTICAL &&
                     lp.width == LayoutParams.WRAP_CONTENT && lp.height == LayoutParams.WRAP_CONTENT;
         }
         return false;
@@ -93,6 +95,7 @@
                 LayoutParams.WRAP_CONTENT);
         params.leftMargin = mItemMargin;
         params.rightMargin = mItemMargin;
+        params.gravity = Gravity.CENTER_VERTICAL;
         return params;
     }
     
@@ -145,14 +148,28 @@
 
     public boolean showOverflowMenu() {
         if (mOverflowButton != null) {
-            MenuPopupHelper popup = new MenuPopupHelper(getContext(), mMenu, mOverflowButton, true);
-            popup.show();
+            final MenuPopupHelper popup =
+                    new MenuPopupHelper(getContext(), mMenu, mOverflowButton, true);
+            // Post this for later; we might still need a layout for the anchor to be right.
+            post(new Runnable() {
+                public void run() {
+                    popup.show();
+                }
+            });
             mOverflowPopup = new WeakReference<MenuPopupHelper>(popup);
             return true;
         }
         return false;
     }
 
+    public boolean isOverflowMenuShowing() {
+        MenuPopupHelper popup = mOverflowPopup != null ? mOverflowPopup.get() : null;
+        if (popup != null) {
+            return popup.isShowing();
+        }
+        return false;
+    }
+
     public boolean hideOverflowMenu() {
         MenuPopupHelper popup = mOverflowPopup != null ? mOverflowPopup.get() : null;
         if (popup != null) {
@@ -174,7 +191,7 @@
             final Resources res = context.getResources();
             setClickable(true);
             setFocusable(true);
-            // TODO setTitle() to a localized string for accessibility
+            setContentDescription(res.getString(com.android.internal.R.string.more_item_label));
             setImageDrawable(res.getDrawable(com.android.internal.R.drawable.ic_menu_more));
             setVisibility(VISIBLE);
             setEnabled(true);
@@ -186,7 +203,8 @@
                 return true;
             }
 
-            showOverflowMenu();
+            // Change to overflow mode
+            mMenu.getCallback().onMenuModeChange(mMenu);
             return true;
         }
     }
diff --git a/core/java/com/android/internal/view/menu/MenuPopupHelper.java b/core/java/com/android/internal/view/menu/MenuPopupHelper.java
index ce0ec04..f52c93c 100644
--- a/core/java/com/android/internal/view/menu/MenuPopupHelper.java
+++ b/core/java/com/android/internal/view/menu/MenuPopupHelper.java
@@ -92,7 +92,9 @@
     }
 
     public void dismiss() {
-        mPopup.dismiss();
+        if (isShowing()) {
+            mPopup.dismiss();
+        }
         mPopup = null;
     }
 
diff --git a/core/java/com/android/internal/widget/ActionBarContextView.java b/core/java/com/android/internal/widget/ActionBarContextView.java
index 5518b3e..6a476d0 100644
--- a/core/java/com/android/internal/widget/ActionBarContextView.java
+++ b/core/java/com/android/internal/widget/ActionBarContextView.java
@@ -163,6 +163,27 @@
         mMenuView = null;
     }
 
+    public boolean showOverflowMenu() {
+        if (mMenuView != null) {
+            return mMenuView.showOverflowMenu();
+        }
+        return false;
+    }
+
+    public boolean hideOverflowMenu() {
+        if (mMenuView != null) {
+            return mMenuView.hideOverflowMenu();
+        }
+        return false;
+    }
+
+    public boolean isOverflowMenuShowing() {
+        if (mMenuView != null) {
+            return mMenuView.isOverflowMenuShowing();
+        }
+        return false;
+    }
+
     @Override
     protected LayoutParams generateDefaultLayoutParams() {
         // Used by custom views if they don't supply layout params. Everything else
diff --git a/core/java/com/android/internal/widget/ActionBarView.java b/core/java/com/android/internal/widget/ActionBarView.java
index c641441..73d3c95 100644
--- a/core/java/com/android/internal/widget/ActionBarView.java
+++ b/core/java/com/android/internal/widget/ActionBarView.java
@@ -118,7 +118,6 @@
         super(context, attrs);
 
         final DisplayMetrics metrics = context.getResources().getDisplayMetrics();
-        mContentHeight = (int) (CONTENT_HEIGHT_DIP * metrics.density + 0.5f);
 
         TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ActionBar);
 
@@ -157,14 +156,18 @@
             LayoutInflater inflater = LayoutInflater.from(context);
             mCustomNavView = (View) inflater.inflate(customNavId, null);
             mNavigationMode = ActionBar.NAVIGATION_MODE_CUSTOM;
+            addView(mCustomNavView);
         }
 
+        final int padding = a.getDimensionPixelSize(R.styleable.ActionBar_padding,
+                (int) (CONTENT_PADDING_DIP * metrics.density + 0.5f));
+        setPadding(padding, padding, padding, padding);
+        mContentHeight = a.getDimensionPixelSize(R.styleable.ActionBar_height,
+                (int) (CONTENT_PADDING_DIP * metrics.density + 0.5f)) - padding * 2;
+
         a.recycle();
 
         // TODO: Set this in the theme
-        int padding = (int) (CONTENT_PADDING_DIP * metrics.density + 0.5f);
-        setPadding(padding, padding, padding, padding);
-
         mSpacing = (int) (CONTENT_SPACING_DIP * metrics.density + 0.5f);
         mActionSpacing = (int) (CONTENT_ACTION_SPACING_DIP * metrics.density + 0.5f);
         
@@ -216,6 +219,13 @@
         return false;
     }
 
+    public boolean isOverflowMenuShowing() {
+        if (mMenuView != null) {
+            return mMenuView.isOverflowMenuShowing();
+        }
+        return false;
+    }
+
     public boolean isOverflowReserved() {
         return mMenuView != null && mMenuView.isOverflowReserved();
     }
diff --git a/core/res/res/anim/animator_fade_in.xml b/core/res/res/anim/animator_fade_in.xml
new file mode 100644
index 0000000..cd5042f
--- /dev/null
+++ b/core/res/res/anim/animator_fade_in.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+** Copyright 2010, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+
+<property xmlns:android="http://schemas.android.com/apk/res/android"
+    android:interpolator="@anim/accelerate_interpolator"
+    android:valueFrom="0"
+    android:valueTo="1"
+    android:propertyName="alpha"
+    android:duration="@android:integer/config_mediumAnimTime"
+/>
diff --git a/core/res/res/anim/animator_fade_out.xml b/core/res/res/anim/animator_fade_out.xml
new file mode 100644
index 0000000..dfb5d9c
--- /dev/null
+++ b/core/res/res/anim/animator_fade_out.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+** Copyright 2010, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+
+<property xmlns:android="http://schemas.android.com/apk/res/android"
+    android:interpolator="@anim/accelerate_interpolator"
+    android:valueFrom="1.0"
+    android:valueTo="0.0"
+    android:propertyName="alpha"
+    android:duration="@android:integer/config_mediumAnimTime"
+/>
diff --git a/core/res/res/anim/fragment_close_enter.xml b/core/res/res/anim/fragment_close_enter.xml
new file mode 100644
index 0000000..d4091e8
--- /dev/null
+++ b/core/res/res/anim/fragment_close_enter.xml
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+** Copyright 2010, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+<sequencer xmlns:android="http://schemas.android.com/apk/res/android">
+    <property
+        android:interpolator="@anim/decelerate_interpolator"
+        android:valueFrom="2"
+        android:valueTo="1"
+        android:valueType="floatType"
+        android:propertyName="scaleX"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:interpolator="@anim/decelerate_interpolator"
+        android:valueFrom="2"
+        android:valueTo="1"
+        android:valueType="floatType"
+        android:propertyName="scaleY"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:interpolator="@anim/decelerate_interpolator"
+        android:valueFrom="0"
+        android:valueTo="1"
+        android:valueType="floatType"
+        android:propertyName="alpha"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:interpolator="@anim/decelerate_interpolator"
+        android:valueFrom="-400"
+        android:valueTo="0"
+        android:valueType="floatType"
+        android:propertyName="translationX"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+</sequencer>
\ No newline at end of file
diff --git a/core/res/res/anim/fragment_close_exit.xml b/core/res/res/anim/fragment_close_exit.xml
new file mode 100644
index 0000000..3e2cd22
--- /dev/null
+++ b/core/res/res/anim/fragment_close_exit.xml
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+** Copyright 2010, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+<sequencer xmlns:android="http://schemas.android.com/apk/res/android">
+    <property
+        android:interpolator="@anim/accelerate_interpolator"
+        android:valueFrom="1"
+        android:valueTo=".5"
+        android:valueType="floatType"
+        android:propertyName="scaleX"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:interpolator="@anim/accelerate_interpolator"
+        android:valueFrom="1"
+        android:valueTo=".5"
+        android:valueType="floatType"
+        android:propertyName="scaleY"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:interpolator="@anim/accelerate_interpolator"
+        android:valueFrom="1"
+        android:valueTo="0"
+        android:valueType="floatType"
+        android:propertyName="alpha"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:interpolator="@anim/accelerate_interpolator"
+        android:valueFrom="0"
+        android:valueTo="400"
+        android:valueType="floatType"
+        android:propertyName="translationX"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+</sequencer>
\ No newline at end of file
diff --git a/core/res/res/anim/fragment_open_enter.xml b/core/res/res/anim/fragment_open_enter.xml
new file mode 100644
index 0000000..c89001c
--- /dev/null
+++ b/core/res/res/anim/fragment_open_enter.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+** Copyright 2010, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+<sequencer xmlns:android="http://schemas.android.com/apk/res/android">
+    <property
+        android:interpolator="@anim/decelerate_interpolator"
+        android:valueFrom="2"
+        android:valueTo="1"
+        android:valueType="floatType"
+        android:propertyName="scaleX"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:interpolator="@anim/decelerate_interpolator"
+        android:valueFrom="2"
+        android:valueTo="1"
+        android:valueType="floatType"
+        android:propertyName="scaleY"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:valueFrom="0"
+        android:valueTo="1"
+        android:valueType="floatType"
+        android:propertyName="alpha"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:valueFrom="400"
+        android:valueTo="0"
+        android:valueType="floatType"
+        android:propertyName="translationX"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+</sequencer>
\ No newline at end of file
diff --git a/core/res/res/anim/fragment_open_exit.xml b/core/res/res/anim/fragment_open_exit.xml
new file mode 100644
index 0000000..427fe4f
--- /dev/null
+++ b/core/res/res/anim/fragment_open_exit.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+** Copyright 2010, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+<sequencer xmlns:android="http://schemas.android.com/apk/res/android">
+    <property
+        android:interpolator="@anim/accelerate_interpolator"
+        android:valueFrom="1"
+        android:valueTo="2"
+        android:valueType="floatType"
+        android:propertyName="scaleX"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:interpolator="@anim/accelerate_interpolator"
+        android:valueFrom="1"
+        android:valueTo="2"
+        android:valueType="floatType"
+        android:propertyName="scaleY"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:valueFrom="1"
+        android:valueTo="0"
+        android:valueType="floatType"
+        android:propertyName="alpha"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+    <property
+        android:valueFrom="0"
+        android:valueTo="-400"
+        android:valueType="floatType"
+        android:propertyName="translationX"
+        android:duration="@android:integer/config_mediumAnimTime"/>
+</sequencer>
\ No newline at end of file
diff --git a/core/res/res/layout-xlarge/screen_action_bar_overlay.xml b/core/res/res/layout-xlarge/screen_action_bar_overlay.xml
new file mode 100644
index 0000000..d0277f0
--- /dev/null
+++ b/core/res/res/layout-xlarge/screen_action_bar_overlay.xml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!--
+This is an optimized layout for a screen with
+the Action Bar enabled overlaying application content.
+-->
+
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:fitsSystemWindows="true">
+    <FrameLayout android:id="@android:id/content"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+    <ViewAnimator android:id="@+id/action_bar_animator"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="top"
+        android:inAnimation="@anim/push_down_in"
+        android:outAnimation="@anim/push_down_out">
+        <com.android.internal.widget.ActionBarView
+            android:id="@+id/action_bar"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            style="?android:attr/windowActionBarStyle" />
+        <com.android.internal.widget.ActionBarContextView
+            android:id="@+id/action_context_bar"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+    </ViewAnimator>
+    <ImageView android:src="?android:attr/windowContentOverlay"
+               android:layout_width="match_parent"
+               android:layout_height="wrap_content"
+               android:layout_below="@id/action_bar_animator" />
+</RelativeLayout>
diff --git a/core/res/res/layout/preference_list_content.xml b/core/res/res/layout/preference_list_content.xml
index d530e96..eeba18e 100644
--- a/core/res/res/layout/preference_list_content.xml
+++ b/core/res/res/layout/preference_list_content.xml
@@ -59,15 +59,28 @@
             android:drawablePadding="3dip"
             android:text="@string/back_button_label"
         />
-
-        <Button android:id="@+id/next_button"
-            android:layout_width="150dip"
+        <LinearLayout
+            android:orientation="horizontal"
+            android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_margin="5dip"
-            android:layout_alignParentRight="true"
-            android:drawableRight="@drawable/ic_btn_next"
-            android:drawablePadding="3dip"
-            android:text="@string/next_button_label"
-        />
+            android:layout_alignParentRight="true">
+
+            <Button android:id="@+id/skip_button"
+                android:layout_width="150dip"
+                android:layout_height="wrap_content"
+                android:layout_margin="5dip"
+                android:text="@string/skip_button_label"
+                android:visibility="gone"
+            />
+
+            <Button android:id="@+id/next_button"
+                android:layout_width="150dip"
+                android:layout_height="wrap_content"
+                android:layout_margin="5dip"
+                android:drawableRight="@drawable/ic_btn_next"
+                android:drawablePadding="3dip"
+                android:text="@string/next_button_label"
+            />
+        </LinearLayout>
     </RelativeLayout>
 </LinearLayout>
diff --git a/core/res/res/layout/screen_action_bar_overlay.xml b/core/res/res/layout/screen_action_bar_overlay.xml
new file mode 100644
index 0000000..cb1ffc5
--- /dev/null
+++ b/core/res/res/layout/screen_action_bar_overlay.xml
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!--
+This is an optimized layout for a screen with
+the Action Bar enabled overlaying application content.
+-->
+
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:fitsSystemWindows="true">
+    <FrameLayout android:id="@android:id/content"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+    <ViewAnimator android:id="@+id/action_bar_animator"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="top"
+        android:inAnimation="@anim/push_down_in"
+        android:outAnimation="@anim/push_down_out">
+        <com.android.internal.widget.ActionBarView
+            android:id="@+id/action_bar"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            style="?android:attr/windowActionBarStyle" />
+        <com.android.internal.widget.ActionBarContextView
+            android:id="@+id/action_context_bar"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+    </ViewAnimator>
+    <ImageView android:src="?android:attr/windowContentOverlay"
+               android:layout_width="match_parent"
+               android:layout_height="wrap_content"
+               android:layout_below="@id/action_bar_animator" />
+    <LinearLayout android:id="@+id/lower_action_context_bar"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:layout_gravity="bottom"
+                  style="?android:attr/windowActionBarStyle"
+                  android:visibility="gone" />
+</RelativeLayout>
diff --git a/core/res/res/values/attrs.xml b/core/res/res/values/attrs.xml
index 97c5822..a75f1a6 100755
--- a/core/res/res/values/attrs.xml
+++ b/core/res/res/values/attrs.xml
@@ -248,6 +248,11 @@
              in place of the usual title bar. -->
         <attr name="windowActionBar" format="boolean" />
 
+        <!-- Flag indicating whether this window's Action Bar should overlay
+             application content. Does nothing if the window would not
+             have an Action Bar. -->
+        <attr name="windowActionBarOverlay" format="boolean" />
+
         <!-- Reference to a style for the Action Bar -->
         <attr name="windowActionBarStyle" format="reference" />
 
@@ -999,6 +1004,7 @@
         <attr name="windowActionBar" />
         <attr name="windowActionBarStyle" />
         <attr name="windowActionModeOverlay" />
+        <attr name="windowActionBarOverlay" />
     </declare-styleable>
 
     <!-- The set of attributes that describe a AlertDialog's theme. -->
@@ -1015,6 +1021,14 @@
         <attr name="centerMedium" format="reference|color" />
     </declare-styleable>
 
+    <!-- Fragment animation class attributes. -->
+    <declare-styleable name="FragmentAnimation">
+        <attr name="fragmentOpenEnterAnimation" format="reference" />
+        <attr name="fragmentOpenExitAnimation" format="reference" />
+        <attr name="fragmentCloseEnterAnimation" format="reference" />
+        <attr name="fragmentCloseExitAnimation" format="reference" />
+    </declare-styleable>
+
     <!-- Window animation class attributes. -->
     <declare-styleable name="WindowAnimation">
         <!-- The animation used when a window is being added. -->
@@ -3987,6 +4001,10 @@
         <attr name="background" />
         <!-- Specifies a layout for custom navigation. Overrides navigationMode. -->
         <attr name="customNavigationLayout" format="reference" />
+        <!-- Specifies a fixed height. -->
+        <attr name="height" />
+        <!-- Specifies padding around all sides. -->
+        <attr name="padding" />
     </declare-styleable>
 
 </resources>
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 99263d7..539f1c0 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -1315,6 +1315,13 @@
   <public type="attr" name="propertyName" />
   <public type="attr" name="ordering" />
   <public type="attr" name="fragment" />
+  <public type="attr" name="windowActionBarOverlay" />
+  <public type="attr" name="fragmentOpenEnterAnimation" />
+  <public type="attr" name="fragmentOpenExitAnimation" />
+  <public type="attr" name="fragmentCloseEnterAnimation" />
+  <public type="attr" name="fragmentCloseExitAnimation" />
+  <public type="anim" name="animator_fade_in" />
+  <public type="anim" name="animator_fade_out" />
 
   <public type="id" name="home" />
   <!-- Context menu ID for the "Select text..." menu item to switch to text
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index 00ebe2b..2b27930 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -807,8 +807,8 @@
     <!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
     <string name="permlab_writeCalendar">add or modify calendar events and send email to guests</string>
     <!-- Description of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
-    <string name="permdesc_writeCalendar">Allows an application to add or change the 
-        events on your calendar, which may send email to guests. Malicious applications can use this 
+    <string name="permdesc_writeCalendar">Allows an application to add or change the
+        events on your calendar, which may send email to guests. Malicious applications can use this
         to erase or modify your calendar events or to send email to guests.</string>
 
     <!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
@@ -1918,7 +1918,7 @@
 
     <!-- Text shown by list fragment when waiting for data to display. -->
     <string name="loading">Loading...</string>
-    
+
     <!-- Default text for a button that can be toggled on and off. -->
     <string name="capital_on">ON</string>
     <!-- Default text for a button that can be toggled on and off. -->
@@ -1969,23 +1969,23 @@
 
     <!-- Notification text to tell the user that a heavy-weight application is running. -->
     <string name="heavy_weight_notification"><xliff:g id="app">%1$s</xliff:g> running</string>
-    
+
     <!-- Notification details to tell the user that a heavy-weight application is running. -->
     <string name="heavy_weight_notification_detail">Select to switch to application</string>
-    
+
     <!-- Title of dialog prompting whether user wants to switch between heavy-weight apps. -->
     <string name="heavy_weight_switcher_title">Switch applications?</string>
-    
+
     <!-- Descriptive text for switching to a new heavy-weight application. -->
     <string name="heavy_weight_switcher_text">Another application is already running
     that must be stopped before you can start a new one.</string>
-    
+
     <string name="old_app_action">Return to <xliff:g id="old_app">%1$s</xliff:g></string>
     <string name="old_app_description">Don\'t start the new application.</string>
-    
+
     <string name="new_app_action">Start <xliff:g id="old_app">%1$s</xliff:g></string>
     <string name="new_app_description">Stop the old application without saving.</string>
-    
+
     <!-- Displayed in the title of the chooser for things to do with text that
          is to be sent to another application. For example, I can send
          text through SMS or IM.  A dialog with those choices would be shown,
@@ -2278,6 +2278,9 @@
     <string name="back_button_label">Back</string>
     <string name="next_button_label">Next</string>
 
+    <!-- Optional button to Skip a PreferenceActivity [CHAR LIMIT=20] -->
+    <string name="skip_button_label">Skip</string>
+
     <!-- Strings for throttling notification -->
     <!-- Shown when the user is in danger of being throttled -->
     <string name="throttle_warning_notification_title">High mobile data use</string>
diff --git a/core/res/res/values/styles.xml b/core/res/res/values/styles.xml
index e0dc3a9..7e52ebd 100644
--- a/core/res/res/values/styles.xml
+++ b/core/res/res/values/styles.xml
@@ -74,6 +74,10 @@
         <item name="wallpaperIntraOpenExitAnimation">@anim/wallpaper_intra_open_exit</item>
         <item name="wallpaperIntraCloseEnterAnimation">@anim/wallpaper_intra_close_enter</item>
         <item name="wallpaperIntraCloseExitAnimation">@anim/wallpaper_intra_close_exit</item>
+        <item name="fragmentOpenEnterAnimation">@anim/fragment_open_enter</item>
+        <item name="fragmentOpenExitAnimation">@anim/fragment_open_exit</item>
+        <item name="fragmentCloseEnterAnimation">@anim/fragment_close_enter</item>
+        <item name="fragmentCloseExitAnimation">@anim/fragment_close_exit</item>
     </style>
 
     <!-- Standard animations for a non-full-screen window or activity. -->
@@ -889,6 +893,8 @@
         <item name="android:background">@android:drawable/action_bar_background</item>
         <item name="android:displayOptions">useLogo</item>
         <item name="android:divider">@android:drawable/action_bar_divider</item>
+        <item name="android:height">56dip</item>
+        <item name="android:padding">3dip</item>
     </style>
 
     <style name="Widget.ActionButton">
diff --git a/include/utils/String8.h b/include/utils/String8.h
index 4e41410..ef0b51a 100644
--- a/include/utils/String8.h
+++ b/include/utils/String8.h
@@ -171,7 +171,8 @@
             status_t            append(const char* other);
             status_t            append(const char* other, size_t numChars);
 
-            status_t            appendFormat(const char* fmt, ...);
+            status_t            appendFormat(const char* fmt, ...)
+                    __attribute__((format (printf, 2, 3)));
 
             // Note that this function takes O(N) time to calculate the value.
             // No cache value is stored.
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index aaf7564..3c1fe2a 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -160,7 +160,9 @@
     mTextureCache.clear();
     mLayerCache.clear();
     mGradientCache.clear();
+    mPathCache.clear();
     mPatchCache.clear();
+    mProgramCache.clear();
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -410,8 +412,14 @@
 }
 
 bool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) {
-    Rect r(left, top, right, bottom);
-    mSnapshot->transform.mapRect(r);
+    SkRect sr;
+    sr.set(left, top, right, bottom);
+
+    SkMatrix m;
+    mSnapshot->transform.copyTo(m);
+    m.mapRect(&sr);
+
+    Rect r(sr.fLeft, sr.fTop, sr.fRight, sr.fBottom);
     return !mSnapshot->clipRect.intersects(r);
 }
 
diff --git a/libs/hwui/Program.cpp b/libs/hwui/Program.cpp
index dbae38e..6528d91 100644
--- a/libs/hwui/Program.cpp
+++ b/libs/hwui/Program.cpp
@@ -51,6 +51,8 @@
             LOGE("Error while linking shaders: %s", log);
             delete log;
         }
+        glDeleteShader(vertexShader);
+        glDeleteShader(fragmentShader);
         glDeleteProgram(id);
     }
 
diff --git a/libs/hwui/ProgramCache.h b/libs/hwui/ProgramCache.h
index 54850ee..fa4b8c4 100644
--- a/libs/hwui/ProgramCache.h
+++ b/libs/hwui/ProgramCache.h
@@ -35,7 +35,7 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 // Debug
-#define DEBUG_PROGRAM_CACHE 1
+#define DEBUG_PROGRAM_CACHE 0
 
 // Debug
 #if DEBUG_PROGRAM_CACHE
diff --git a/libs/hwui/Snapshot.h b/libs/hwui/Snapshot.h
index 399ae68..342e5b1 100644
--- a/libs/hwui/Snapshot.h
+++ b/libs/hwui/Snapshot.h
@@ -96,9 +96,14 @@
     bool clip(float left, float top, float right, float bottom, SkRegion::Op op) {
         bool clipped = false;
 
-        Rect r(left, top, right, bottom);
-        transform.mapRect(r);
+        SkRect sr;
+        sr.set(left, top, right, bottom);
 
+        SkMatrix m;
+        transform.copyTo(m);
+        m.mapRect(&sr);
+
+        Rect r(sr.fLeft, sr.fTop, sr.fRight, sr.fBottom);
         switch (op) {
             case SkRegion::kDifference_Op:
                 break;
@@ -137,8 +142,16 @@
         if (flags & Snapshot::kFlagDirtyLocalClip) {
             mat4 inverse;
             inverse.loadInverse(transform);
-            localClip.set(clipRect);
-            inverse.mapRect(localClip);
+
+            SkRect sr;
+            sr.set(clipRect.left, clipRect.top, clipRect.right, clipRect.bottom);
+
+            SkMatrix m;
+            inverse.copyTo(m);
+            m.mapRect(&sr);
+
+            localClip.set(sr.fLeft, sr.fTop, sr.fRight, sr.fBottom);
+
             flags &= ~Snapshot::kFlagDirtyLocalClip;
         }
         return localClip;
diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindow.java b/policy/src/com/android/internal/policy/impl/PhoneWindow.java
index 8a6428b..546c0f4 100644
--- a/policy/src/com/android/internal/policy/impl/PhoneWindow.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindow.java
@@ -599,7 +599,7 @@
             // The panel key was pushed, so set the chording key
             mPanelChordingKey = keyCode;
             mPanelMayLongPress = false;
-            
+
             PanelFeatureState st = getPanelState(featureId, true);
             if (!st.isOpen) {
                 if (getContext().getResources().getConfiguration().keyboard
@@ -608,7 +608,6 @@
                 }
                 return preparePanel(st, event);
             }
-            
         } else if (mPanelMayLongPress && mPanelChordingKey == keyCode
                 && (event.getFlags()&KeyEvent.FLAG_LONG_PRESS) != 0) {
             // We have had a long press while in a state where this
@@ -643,25 +642,40 @@
             }
             
             boolean playSoundEffect = false;
-            PanelFeatureState st = getPanelState(featureId, true);
-            if (st.isOpen || st.isHandled) {
+            final PanelFeatureState st = getPanelState(featureId, true);
+            if (featureId == FEATURE_OPTIONS_PANEL && mActionBar != null) {
+                if (mActionBar.isOverflowReserved()) {
+                    if (!mActionBar.isOverflowMenuShowing()) {
+                        final Callback cb = getCallback();
+                        if (cb != null) {
+                            if (cb.onPreparePanel(featureId, st.createdPanelView, st.menu)) {
+                                playSoundEffect = mActionBar.showOverflowMenu();
+                            }
+                        }
+                    } else {
+                        playSoundEffect = mActionBar.hideOverflowMenu();
+                    }
+                }
+            } else {
+                if (st.isOpen || st.isHandled) {
 
-                // Play the sound effect if the user closed an open menu (and not if
-                // they just released a menu shortcut)
-                playSoundEffect = st.isOpen;
+                    // Play the sound effect if the user closed an open menu (and not if
+                    // they just released a menu shortcut)
+                    playSoundEffect = st.isOpen;
 
-                // Close menu
-                closePanel(st, true);
+                    // Close menu
+                    closePanel(st, true);
 
-            } else if (st.isPrepared) {
+                } else if (st.isPrepared) {
 
-                // Write 'menu opened' to event log
-                EventLog.writeEvent(50001, 0);
+                    // Write 'menu opened' to event log
+                    EventLog.writeEvent(50001, 0);
 
-                // Show menu
-                openPanel(st, event);
+                    // Show menu
+                    openPanel(st, event);
 
-                playSoundEffect = true;
+                    playSoundEffect = true;
+                }
             }
 
             if (playSoundEffect) {
@@ -841,6 +855,21 @@
     }
 
     private void reopenMenu(boolean toggleMenuMode) {
+        if (mActionBar != null) {
+            if (!mActionBar.isOverflowMenuShowing() || !toggleMenuMode) {
+                final Callback cb = getCallback();
+                if (cb != null) {
+                    final PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, true);
+                    if (cb.onPreparePanel(FEATURE_OPTIONS_PANEL, st.createdPanelView, st.menu)) {
+                        mActionBar.showOverflowMenu();
+                    }
+                }
+            } else {
+                mActionBar.hideOverflowMenu();
+            }
+            return;
+        }
+
         PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, true);
 
         // Save the future expanded mode state since closePanel will reset it
@@ -1387,12 +1416,8 @@
             }
 
             case KeyEvent.KEYCODE_MENU: {
-                if (mActionBar != null && mActionBar.isOverflowReserved()) {
-                    mActionBar.showOverflowMenu();
-                } else {
-                    onKeyUpPanel(featureId < 0 ? FEATURE_OPTIONS_PANEL : featureId,
-                            event);
-                }
+                onKeyUpPanel(featureId < 0 ? FEATURE_OPTIONS_PANEL : featureId,
+                        event);
                 return true;
             }
 
@@ -2247,6 +2272,10 @@
             requestFeature(FEATURE_ACTION_BAR);
         }
 
+        if (a.getBoolean(com.android.internal.R.styleable.Window_windowActionBarOverlay, false)) {
+            requestFeature(FEATURE_ACTION_BAR_OVERLAY);
+        }
+
         if (a.getBoolean(com.android.internal.R.styleable.Window_windowActionModeOverlay, false)) {
             requestFeature(FEATURE_ACTION_MODE_OVERLAY);
         }
@@ -2333,7 +2362,11 @@
             if (mIsFloating) {
                 layoutResource = com.android.internal.R.layout.dialog_title;
             } else if ((features & (1 << FEATURE_ACTION_BAR)) != 0) {
-                layoutResource = com.android.internal.R.layout.screen_action_bar;
+                if ((features & (1 << FEATURE_ACTION_BAR_OVERLAY)) != 0) {
+                    layoutResource = com.android.internal.R.layout.screen_action_bar_overlay;
+                } else {
+                    layoutResource = com.android.internal.R.layout.screen_action_bar;
+                }
             } else {
                 layoutResource = com.android.internal.R.layout.screen_title;
             }
diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
index cb7fe06..a07c385 100755
--- a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
@@ -37,6 +37,7 @@
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.LocalPowerManager;
+import android.os.Looper;
 import android.os.PowerManager;
 import android.os.RemoteException;
 import android.os.ServiceManager;
@@ -48,15 +49,20 @@
 import com.android.internal.policy.PolicyManager;
 import com.android.internal.statusbar.IStatusBarService;
 import com.android.internal.telephony.ITelephony;
+import com.android.internal.view.BaseInputHandler;
 import com.android.internal.widget.PointerLocationView;
 
 import android.util.Config;
 import android.util.EventLog;
 import android.util.Log;
+import android.util.Slog;
 import android.view.Display;
 import android.view.Gravity;
 import android.view.HapticFeedbackConstants;
 import android.view.IWindowManager;
+import android.view.InputChannel;
+import android.view.InputQueue;
+import android.view.InputHandler;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.WindowOrientationListener;
@@ -221,6 +227,17 @@
     
     int mPointerLocationMode = 0;
     PointerLocationView mPointerLocationView = null;
+    InputChannel mPointerLocationInputChannel;
+    
+    private final InputHandler mPointerLocationInputHandler = new BaseInputHandler() {
+        @Override
+        public void handleMotion(MotionEvent event, Runnable finishedCallback) {
+            finishedCallback.run();
+            synchronized (mLock) {
+                mPointerLocationView.addTouchEvent(event);
+            }
+        }
+    };
     
     // The current size of the screen.
     int mW, mH;
@@ -617,8 +634,26 @@
             WindowManagerImpl wm = (WindowManagerImpl)
                     mContext.getSystemService(Context.WINDOW_SERVICE);
             wm.addView(addView, lp);
+            
+            if (mPointerLocationInputChannel == null) {
+                try {
+                    mPointerLocationInputChannel =
+                        mWindowManager.monitorInput("PointerLocationView");
+                    InputQueue.registerInputChannel(mPointerLocationInputChannel,
+                            mPointerLocationInputHandler, mHandler.getLooper().getQueue());
+                } catch (RemoteException ex) {
+                    Slog.e(TAG, "Could not set up input monitoring channel for PointerLocation.",
+                            ex);
+                }
+            }
         }
         if (removeView != null) {
+            if (mPointerLocationInputChannel != null) {
+                InputQueue.unregisterInputChannel(mPointerLocationInputChannel);
+                mPointerLocationInputChannel.dispose();
+                mPointerLocationInputChannel = null;
+            }
+            
             WindowManagerImpl wm = (WindowManagerImpl)
                     mContext.getSystemService(Context.WINDOW_SERVICE);
             wm.removeView(removeView);
@@ -732,20 +767,6 @@
                 : Configuration.KEYBOARDHIDDEN_YES;
     }
     
-    public void dispatchedPointerEventLw(MotionEvent ev, int targetX, int targetY) {
-        if (mPointerLocationView == null) {
-            return;
-        }
-        synchronized (mLock) {
-            if (mPointerLocationView == null) {
-                return;
-            }
-            ev.offsetLocation(targetX, targetY);
-            mPointerLocationView.addTouchEvent(ev);
-            ev.offsetLocation(-targetX, -targetY);
-        }
-    }
-    
     /** {@inheritDoc} */
     public int windowTypeToLayerLw(int type) {
         if (type >= FIRST_APPLICATION_WINDOW && type <= LAST_APPLICATION_WINDOW) {
diff --git a/services/java/com/android/server/InputManager.java b/services/java/com/android/server/InputManager.java
index 9195123..c2c799b 100644
--- a/services/java/com/android/server/InputManager.java
+++ b/services/java/com/android/server/InputManager.java
@@ -75,7 +75,8 @@
             int sw);
     private static native boolean nativeHasKeys(int deviceId, int sourceMask,
             int[] keyCodes, boolean[] keyExists);
-    private static native void nativeRegisterInputChannel(InputChannel inputChannel);
+    private static native void nativeRegisterInputChannel(InputChannel inputChannel,
+            boolean monitor);
     private static native void nativeUnregisterInputChannel(InputChannel inputChannel);
     private static native int nativeInjectInputEvent(InputEvent event,
             int injectorPid, int injectorUid, int syncMode, int timeoutMillis);
@@ -225,14 +226,38 @@
         return nativeHasKeys(deviceId, sourceMask, keyCodes, keyExists);
     }
     
+    /**
+     * Creates an input channel that will receive all input from the input dispatcher.
+     * @param inputChannelName The input channel name.
+     * @return The input channel.
+     */
+    public InputChannel monitorInput(String inputChannelName) {
+        if (inputChannelName == null) {
+            throw new IllegalArgumentException("inputChannelName must not be null.");
+        }
+        
+        InputChannel[] inputChannels = InputChannel.openInputChannelPair(inputChannelName);
+        nativeRegisterInputChannel(inputChannels[0], true);
+        inputChannels[0].dispose(); // don't need to retain the Java object reference
+        return inputChannels[1];
+    }
+
+    /**
+     * Registers an input channel so that it can be used as an input event target.
+     * @param inputChannel The input channel to register.
+     */
     public void registerInputChannel(InputChannel inputChannel) {
         if (inputChannel == null) {
             throw new IllegalArgumentException("inputChannel must not be null.");
         }
         
-        nativeRegisterInputChannel(inputChannel);
+        nativeRegisterInputChannel(inputChannel, false);
     }
     
+    /**
+     * Unregisters an input channel.
+     * @param inputChannel The input channel to unregister.
+     */
     public void unregisterInputChannel(InputChannel inputChannel) {
         if (inputChannel == null) {
             throw new IllegalArgumentException("inputChannel must not be null.");
diff --git a/services/java/com/android/server/WindowManagerService.java b/services/java/com/android/server/WindowManagerService.java
index e4ef09c..3f5888b 100644
--- a/services/java/com/android/server/WindowManagerService.java
+++ b/services/java/com/android/server/WindowManagerService.java
@@ -62,10 +62,14 @@
 import android.content.pm.PackageManager;
 import android.content.res.CompatibilityInfo;
 import android.content.res.Configuration;
+import android.graphics.Canvas;
 import android.graphics.Matrix;
+import android.graphics.Paint;
 import android.graphics.PixelFormat;
 import android.graphics.Rect;
 import android.graphics.Region;
+import android.graphics.Typeface;
+import android.graphics.Paint.FontMetricsInt;
 import android.os.BatteryStats;
 import android.os.Binder;
 import android.os.Bundle;
@@ -92,6 +96,7 @@
 import android.util.Log;
 import android.util.Slog;
 import android.util.SparseIntArray;
+import android.util.TypedValue;
 import android.view.Display;
 import android.view.Gravity;
 import android.view.HapticFeedbackConstants;
@@ -115,6 +120,7 @@
 import android.view.WindowManager;
 import android.view.WindowManagerImpl;
 import android.view.WindowManagerPolicy;
+import android.view.Surface.OutOfResourcesException;
 import android.view.WindowManager.LayoutParams;
 import android.view.animation.AccelerateInterpolator;
 import android.view.animation.Animation;
@@ -369,6 +375,7 @@
     private DimAnimator mDimAnimator = null;
     Surface mBlurSurface;
     boolean mBlurShown;
+    Watermark mWatermark;
 
     int mTransactionSequence = 0;
 
@@ -4373,11 +4380,19 @@
         }
         return mInputManager.getKeyCodeState(-1, InputDevice.SOURCE_DPAD, sw);
     }
-
+    
     public boolean hasKeys(int[] keycodes, boolean[] keyExists) {
         return mInputManager.hasKeys(-1, InputDevice.SOURCE_ANY, keycodes, keyExists);
     }
 
+    public InputChannel monitorInput(String inputChannelName) {
+        if (!checkCallingPermission(android.Manifest.permission.READ_INPUT_STATE,
+                "monitorInput()")) {
+            throw new SecurityException("Requires READ_INPUT_STATE permission");
+        }
+        return mInputManager.monitorInput(inputChannelName);
+    }
+
     public void enableScreenAfterBoot() {
         synchronized(mWindowMap) {
             if (mSystemBooted) {
@@ -8516,12 +8531,6 @@
             updateFocusedWindowLocked(UPDATE_FOCUS_WILL_PLACE_SURFACES);
         }
         
-        if (mFxSession == null) {
-            mFxSession = new SurfaceSession();
-        }
-
-        if (SHOW_TRANSACTIONS) Slog.i(TAG, ">>> OPEN TRANSACTION");
-
         // Initialize state of exiting tokens.
         for (i=mExitingTokens.size()-1; i>=0; i--) {
             mExitingTokens.get(i).hasVisible = false;
@@ -8538,8 +8547,24 @@
         float buttonBrightness = -1;
         boolean focusDisplayed = false;
         boolean animating = false;
+        boolean createWatermark = false;
+
+        if (mFxSession == null) {
+            mFxSession = new SurfaceSession();
+            createWatermark = true;
+        }
+
+        if (SHOW_TRANSACTIONS) Slog.i(TAG, ">>> OPEN TRANSACTION");
 
         Surface.openTransaction();
+
+        if (createWatermark) {
+            createWatermark();
+        }
+        if (mWatermark != null) {
+            mWatermark.positionSurface(dw, dh);
+        }
+
         try {
             boolean wallpaperForceHidingChanged = false;
             int repeats = 0;
@@ -10042,6 +10067,93 @@
         mScreenFrozenLock.release();
     }
 
+    static int getPropertyInt(String name, int defUnits, int defDps, DisplayMetrics dm) {
+        String str = SystemProperties.get(name);
+        try {
+            int val = Integer.parseInt(str);
+            return val;
+        } catch (Exception e) {
+        }
+        if (defUnits == TypedValue.COMPLEX_UNIT_PX) {
+            return defDps;
+        }
+        int val = (int)TypedValue.applyDimension(defUnits, defDps, dm);
+        return val;
+    }
+
+    class Watermark {
+        Surface mSurface;
+        int mWidth;
+        int mHeight;
+        int mXPercent;
+        int mYPercent;
+
+        Watermark(SurfaceSession session, String text) {
+            final DisplayMetrics dm = new DisplayMetrics();
+            mDisplay.getMetrics(dm);
+
+            int fontSize = getPropertyInt("ro.watermark.height",
+                    TypedValue.COMPLEX_UNIT_DIP, 48, dm);
+            mXPercent = getPropertyInt("ro.watermark.x",
+                    TypedValue.COMPLEX_UNIT_PX, 50, dm);
+            mYPercent = getPropertyInt("ro.watermark.y",
+                    TypedValue.COMPLEX_UNIT_PX, 99, dm);
+            int color = getPropertyInt("ro.watermark.color",
+                    TypedValue.COMPLEX_UNIT_PX, 0x80ffffff, dm);
+            int shadowRadius = getPropertyInt("ro.watermark.shadow.radius",
+                    TypedValue.COMPLEX_UNIT_PX, 5, dm);
+            int shadowDx = getPropertyInt("ro.watermark.shadow.dx",
+                    TypedValue.COMPLEX_UNIT_PX, 0, dm);
+            int shadowDy = getPropertyInt("ro.watermark.shadow.dy",
+                    TypedValue.COMPLEX_UNIT_PX, 0, dm);
+            int shadowColor = getPropertyInt("ro.watermark.shadow.color",
+                    TypedValue.COMPLEX_UNIT_PX, 0xff000000, dm);
+
+            Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
+            paint.setTextSize(fontSize);
+            paint.setColor(color);
+            paint.setShadowLayer(shadowRadius, shadowDx, shadowDy, shadowColor);
+            paint.setTypeface(Typeface.create(Typeface.SANS_SERIF, Typeface.BOLD));
+
+            FontMetricsInt fm = paint.getFontMetricsInt();
+            mHeight = fm.descent - fm.ascent + 20;
+            mWidth = (int)paint.measureText(text) + 20;
+
+            try {
+                mSurface = new Surface(session, 0,
+                        "WatermarkSurface",
+                        -1, mWidth, mHeight, PixelFormat.TRANSLUCENT, 0);
+                mSurface.setLayer(TYPE_LAYER_MULTIPLIER*100);
+                Rect dirty = new Rect(0, 0, mWidth, mHeight);
+                Canvas c = mSurface.lockCanvas(dirty);
+                c.drawText(text, 10, -fm.ascent+10, paint);
+                mSurface.unlockCanvasAndPost(c);
+                mSurface.show();
+            } catch (OutOfResourcesException e) {
+            }
+        }
+
+        void positionSurface(int dw, int dh) {
+            int availW = dw - mWidth;
+            int availH = dh - mHeight;
+            mSurface.setPosition((availW*mXPercent)/100,
+                    (availH*mYPercent)/100);
+        }
+    }
+
+    void createWatermark() {
+        if (mWatermark != null) {
+            return;
+        }
+
+        String text = SystemProperties.get("ro.watermark.text");
+        if (text == null || text.length() <= 0) {
+            return;
+        }
+
+        mWatermark = new Watermark(mFxSession, text);
+    }
+
     @Override
     public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
         if (mContext.checkCallingOrSelfPermission("android.permission.DUMP")
diff --git a/services/java/com/android/server/am/ActivityManagerService.java b/services/java/com/android/server/am/ActivityManagerService.java
index a32cd4c..df930ad 100644
--- a/services/java/com/android/server/am/ActivityManagerService.java
+++ b/services/java/com/android/server/am/ActivityManagerService.java
@@ -3578,6 +3578,7 @@
             
             if (mFactoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) {
                 // Tell anyone interested that we are done booting!
+                SystemProperties.set("sys.boot_completed", "1");
                 broadcastIntentLocked(null, null,
                         new Intent(Intent.ACTION_BOOT_COMPLETED, null),
                         null, null, 0, null, null,
diff --git a/services/jni/com_android_server_InputManager.cpp b/services/jni/com_android_server_InputManager.cpp
index 0982b32..ebe71ab 100644
--- a/services/jni/com_android_server_InputManager.cpp
+++ b/services/jni/com_android_server_InputManager.cpp
@@ -213,7 +213,7 @@
     void setDisplayOrientation(int32_t displayId, int32_t orientation);
 
     status_t registerInputChannel(JNIEnv* env, const sp<InputChannel>& inputChannel,
-            jweak inputChannelObjWeak);
+            jweak inputChannelObjWeak, bool monitor);
     status_t unregisterInputChannel(JNIEnv* env, const sp<InputChannel>& inputChannel);
 
     void setInputWindows(JNIEnv* env, jobjectArray windowObjArray);
@@ -334,6 +334,7 @@
     bool mWindowsReady;
     Vector<InputWindow> mWindows;
     Vector<InputWindow*> mWallpaperWindows;
+    Vector<sp<InputChannel> > mMonitoringChannels;
 
     // Focus tracking for keys, trackball, etc.
     InputWindow* mFocusedWindow;
@@ -382,6 +383,10 @@
     static void addTarget(const InputWindow* window, int32_t targetFlags,
             nsecs_t timeSpentWaitingForApplication, Vector<InputTarget>& outTargets);
 
+    void registerMonitoringChannel(const sp<InputChannel>& inputChannel);
+    void unregisterMonitoringChannel(const sp<InputChannel>& inputChannel);
+    void addMonitoringTargetsLd(Vector<InputTarget>& outTargets);
+
     static inline JNIEnv* jniEnv() {
         return AndroidRuntime::getJNIEnv();
     }
@@ -492,7 +497,7 @@
 }
 
 status_t NativeInputManager::registerInputChannel(JNIEnv* env,
-        const sp<InputChannel>& inputChannel, jobject inputChannelObj) {
+        const sp<InputChannel>& inputChannel, jobject inputChannelObj, bool monitor) {
     jweak inputChannelObjWeak = env->NewWeakGlobalRef(inputChannelObj);
     if (! inputChannelObjWeak) {
         LOGE("Could not create weak reference for input channel.");
@@ -519,9 +524,14 @@
 
     status = mInputManager->registerInputChannel(inputChannel);
     if (! status) {
+        // Success.
+        if (monitor) {
+            registerMonitoringChannel(inputChannel);
+        }
         return OK;
     }
 
+    // Failed!
     {
         AutoMutex _l(mInputChannelRegistryLock);
         mInputChannelObjWeakByReceiveFd.removeItem(inputChannel->getReceivePipeFd());
@@ -552,6 +562,8 @@
 
     env->DeleteWeakGlobalRef(inputChannelObjWeak);
 
+    unregisterMonitoringChannel(inputChannel);
+
     return mInputManager->unregisterInputChannel(inputChannel);
 }
 
@@ -829,6 +841,8 @@
 
         env->DeleteLocalRef(inputChannelObjLocal);
     }
+
+    unregisterMonitoringChannel(inputChannel);
 }
 
 bool NativeInputManager::notifyInputChannelANR(const sp<InputChannel>& inputChannel,
@@ -1429,7 +1443,9 @@
 
             // If there is no currently touched window then fail.
             if (! mTouchedWindow) {
-                LOGW("Dropping event because there is no touched window to receive it.");
+#if DEBUG_INPUT_DISPATCHER_POLICY
+                LOGD("Dropping event because there is no touched window to receive it.");
+#endif
                 injectionResult = INPUT_EVENT_INJECTION_FAILED;
                 injectionPermission = INJECTION_PERMISSION_GRANTED;
                 break; // failed, exit wait loop
@@ -1587,6 +1603,8 @@
             outTargets.clear();
             return INPUT_EVENT_INJECTION_SUCCEEDED;
         }
+
+        addMonitoringTargetsLd(outTargets);
     }
 
     pokeUserActivityIfNeeded(windowType, POWER_MANAGER_BUTTON_EVENT);
@@ -1631,6 +1649,8 @@
         }
 
         windowType = focusedWindow->layoutParamsType;
+
+        addMonitoringTargetsLd(outTargets);
     } // release lock
 
     pokeUserActivityIfNeeded(windowType, POWER_MANAGER_BUTTON_EVENT);
@@ -1657,6 +1677,8 @@
         }
 
         windowType = touchedWindow->layoutParamsType;
+
+        addMonitoringTargetsLd(outTargets);
     } // release lock
 
     int32_t eventType;
@@ -1714,6 +1736,39 @@
     android_server_PowerManagerService_userActivity(eventTime, eventType);
 }
 
+void NativeInputManager::registerMonitoringChannel(const sp<InputChannel>& inputChannel) {
+    { // acquire lock
+         AutoMutex _l(mDispatchLock);
+         mMonitoringChannels.push(inputChannel);
+    } // release lock
+}
+
+void NativeInputManager::unregisterMonitoringChannel(const sp<InputChannel>& inputChannel) {
+    { // acquire lock
+         AutoMutex _l(mDispatchLock);
+
+         for (size_t i = 0; i < mMonitoringChannels.size(); i++) {
+             if (mMonitoringChannels[i] == inputChannel) {
+                 mMonitoringChannels.removeAt(i);
+                 break;
+             }
+         }
+    } // release lock
+}
+
+void NativeInputManager::addMonitoringTargetsLd(Vector<InputTarget>& outTargets) {
+    for (size_t i = 0; i < mMonitoringChannels.size(); i++) {
+        outTargets.push();
+
+        InputTarget& target = outTargets.editTop();
+        target.inputChannel = mMonitoringChannels[i];
+        target.flags = 0;
+        target.timeout = -1;
+        target.xOffset = 0;
+        target.yOffset = 0;
+    }
+}
+
 static void dumpMotionRange(String8& dump,
         const char* name, const InputDeviceInfo::MotionRange* range) {
     if (range) {
@@ -1805,6 +1860,11 @@
                 mWindows[i].ownerPid, mWindows[i].ownerUid,
                 mWindows[i].dispatchingTimeout / 1000000.0);
     }
+
+    for (size_t i = 0; i < mMonitoringChannels.size(); i++) {
+        dump.appendFormat("  monitoringChannel[%d]: '%s'\n",
+                i, mMonitoringChannels[i]->getName().string());
+    }
 }
 
 // ----------------------------------------------------------------------------
@@ -2012,7 +2072,7 @@
 }
 
 static void android_server_InputManager_nativeRegisterInputChannel(JNIEnv* env, jclass clazz,
-        jobject inputChannelObj) {
+        jobject inputChannelObj, jboolean monitor) {
     if (checkInputManagerUnitialized(env)) {
         return;
     }
@@ -2026,15 +2086,17 @@
 
 
     status_t status = gNativeInputManager->registerInputChannel(
-            env, inputChannel, inputChannelObj);
+            env, inputChannel, inputChannelObj, monitor);
     if (status) {
         jniThrowRuntimeException(env, "Failed to register input channel.  "
                 "Check logs for details.");
         return;
     }
 
-    android_view_InputChannel_setDisposeCallback(env, inputChannelObj,
-            android_server_InputManager_handleInputChannelDisposed, NULL);
+    if (! monitor) {
+        android_view_InputChannel_setDisposeCallback(env, inputChannelObj,
+                android_server_InputManager_handleInputChannelDisposed, NULL);
+    }
 }
 
 static void android_server_InputManager_nativeUnregisterInputChannel(JNIEnv* env, jclass clazz,
@@ -2149,7 +2211,7 @@
             (void*) android_server_InputManager_nativeGetSwitchState },
     { "nativeHasKeys", "(II[I[Z)Z",
             (void*) android_server_InputManager_nativeHasKeys },
-    { "nativeRegisterInputChannel", "(Landroid/view/InputChannel;)V",
+    { "nativeRegisterInputChannel", "(Landroid/view/InputChannel;Z)V",
             (void*) android_server_InputManager_nativeRegisterInputChannel },
     { "nativeUnregisterInputChannel", "(Landroid/view/InputChannel;)V",
             (void*) android_server_InputManager_nativeUnregisterInputChannel },
diff --git a/services/surfaceflinger/Android.mk b/services/surfaceflinger/Android.mk
index a14bfb5..79772ed 100644
--- a/services/surfaceflinger/Android.mk
+++ b/services/surfaceflinger/Android.mk
@@ -5,6 +5,7 @@
     clz.cpp.arm \
     DisplayHardware/DisplayHardware.cpp \
     DisplayHardware/DisplayHardwareBase.cpp \
+    DisplayHardware/HWComposer.cpp \
     BlurFilter.cpp.arm \
     GLExtensions.cpp \
     Layer.cpp \
diff --git a/services/surfaceflinger/DisplayHardware/DisplayHardware.cpp b/services/surfaceflinger/DisplayHardware/DisplayHardware.cpp
index 2eac0a8..166c528 100644
--- a/services/surfaceflinger/DisplayHardware/DisplayHardware.cpp
+++ b/services/surfaceflinger/DisplayHardware/DisplayHardware.cpp
@@ -36,11 +36,11 @@
 
 #include "DisplayHardware/DisplayHardware.h"
 
-#include <hardware/copybit.h>
 #include <hardware/overlay.h>
 #include <hardware/gralloc.h>
 
 #include "GLExtensions.h"
+#include "HWComposer.h"
 
 using namespace android;
 
@@ -76,7 +76,7 @@
         const sp<SurfaceFlinger>& flinger,
         uint32_t dpy)
     : DisplayHardwareBase(flinger, dpy),
-      mFlags(0)
+      mFlags(0), mHwc(0)
 {
     init(dpy);
 }
@@ -262,6 +262,17 @@
 
     // Unbind the context from this thread
     eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+
+
+    // initialize the H/W composer
+    mHwc = new HWComposer();
+    if (mHwc->initCheck() == NO_ERROR) {
+        mHwc->setFrameBuffer(mDisplay, mSurface);
+    }
+}
+
+HWComposer& DisplayHardware::getHwComposer() const {
+    return *mHwc;
 }
 
 /*
@@ -317,7 +328,12 @@
     }
     
     mPageFlipCount++;
-    eglSwapBuffers(dpy, surface);
+
+    if (mHwc->initCheck() == NO_ERROR) {
+        mHwc->commit();
+    } else {
+        eglSwapBuffers(dpy, surface);
+    }
     checkEGLErrors("eglSwapBuffers");
 
     // for debugging
diff --git a/services/surfaceflinger/DisplayHardware/DisplayHardware.h b/services/surfaceflinger/DisplayHardware/DisplayHardware.h
index 66bf521..f2cfd2d 100644
--- a/services/surfaceflinger/DisplayHardware/DisplayHardware.h
+++ b/services/surfaceflinger/DisplayHardware/DisplayHardware.h
@@ -34,12 +34,11 @@
 #include "DisplayHardware/DisplayHardwareBase.h"
 
 struct overlay_control_device_t;
-struct framebuffer_device_t;
-struct copybit_image_t;
 
 namespace android {
 
 class FramebufferNativeWindow;
+class HWComposer;
 
 class DisplayHardware : public DisplayHardwareBase
 {
@@ -80,6 +79,9 @@
     uint32_t getPageFlipCount() const;
     EGLDisplay getEGLDisplay() const { return mDisplay; }
     overlay_control_device_t* getOverlayEngine() const { return mOverlayEngine; }
+
+    // Hardware Composer
+    HWComposer& getHwComposer() const;
     
     status_t compositionComplete() const;
     
@@ -107,6 +109,8 @@
     GLint           mMaxViewportDims;
     GLint           mMaxTextureSize;
     
+    HWComposer*     mHwc;
+
     sp<FramebufferNativeWindow> mNativeWindow;
     overlay_control_device_t* mOverlayEngine;
 };
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
new file mode 100644
index 0000000..8ca880b
--- /dev/null
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+
+#include <hardware/hardware.h>
+
+#include <cutils/log.h>
+
+#include <EGL/egl.h>
+
+#include "HWComposer.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+HWComposer::HWComposer()
+    : mModule(0), mHwc(0), mList(0),
+      mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE)
+{
+    int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
+    LOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
+    if (err == 0) {
+        err = hwc_open(mModule, &mHwc);
+        LOGE_IF(err, "%s device failed to initialize (%s)",
+                HWC_HARDWARE_COMPOSER, strerror(-err));
+    }
+}
+
+HWComposer::~HWComposer() {
+    free(mList);
+    if (mHwc) {
+        hwc_close(mHwc);
+    }
+}
+
+status_t HWComposer::initCheck() const {
+    return mHwc ? NO_ERROR : NO_INIT;
+}
+
+void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) {
+    mDpy = (hwc_display_t)dpy;
+    mSur = (hwc_surface_t)sur;
+}
+
+status_t HWComposer::createWorkList(size_t numLayers) {
+    if (mHwc && (!mList || mList->numHwLayers < numLayers)) {
+        free(mList);
+        size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t);
+        mList = (hwc_layer_list_t*)malloc(size);
+        mList->flags = HWC_GEOMETRY_CHANGED;
+        mList->numHwLayers = numLayers;
+    }
+    return NO_ERROR;
+}
+
+status_t HWComposer::prepare() const {
+    int err = mHwc->prepare(mHwc, mList);
+    return (status_t)err;
+}
+
+status_t HWComposer::commit() const {
+    int err = mHwc->set(mHwc, mDpy, mSur, mList);
+    mList->flags &= ~HWC_GEOMETRY_CHANGED;
+    return (status_t)err;
+}
+
+HWComposer::iterator HWComposer::begin() {
+    return mList ? &(mList->hwLayers[0]) : NULL;
+}
+
+HWComposer::iterator HWComposer::end() {
+    return mList ? &(mList->hwLayers[mList->numHwLayers]) : NULL;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
new file mode 100644
index 0000000..729f23b
--- /dev/null
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_SF_HWCOMPOSER_H
+#define ANDROID_SF_HWCOMPOSER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <EGL/egl.h>
+
+#include <hardware/hwcomposer.h>
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+class HWComposer
+{
+public:
+
+    HWComposer();
+    ~HWComposer();
+
+    status_t initCheck() const;
+
+    // tells the HAL what the framebuffer is
+    void setFrameBuffer(EGLDisplay dpy, EGLSurface sur);
+
+    // create a work list for numLayers layer
+    status_t createWorkList(size_t numLayers);
+
+    // Asks the HAL what it can do
+    status_t prepare() const;
+
+    // commits the list
+    status_t commit() const;
+
+
+    typedef hwc_layer_t const * const_iterator;
+    typedef hwc_layer_t* iterator;
+
+    iterator begin();
+    iterator end();
+
+private:
+    hw_module_t const*      mModule;
+    hwc_composer_device_t*  mHwc;
+    hwc_layer_list_t*       mList;
+    hwc_display_t           mDpy;
+    hwc_surface_t           mSur;
+};
+
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_SF_HWCOMPOSER_H
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 629d993..3720e1669 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -35,6 +35,7 @@
 #include "Layer.h"
 #include "SurfaceFlinger.h"
 #include "DisplayHardware/DisplayHardware.h"
+#include "DisplayHardware/HWComposer.h"
 
 
 #define DEBUG_RESIZE    0
@@ -177,6 +178,62 @@
     return NO_ERROR;
 }
 
+void Layer::setGeometry(hwc_layer_t* hwcl)
+{
+    hwcl->compositionType = HWC_FRAMEBUFFER;
+    hwcl->hints = 0;
+    hwcl->flags = 0;
+    hwcl->transform = 0;
+    hwcl->blending = HWC_BLENDING_NONE;
+
+    // we can't do alpha-fade with the hwc HAL
+    const State& s(drawingState());
+    if (s.alpha < 0xFF) {
+        hwcl->flags = HWC_SKIP_LAYER;
+        return;
+    }
+
+    // we can only handle simple transformation
+    if (mOrientation & Transform::ROT_INVALID) {
+        hwcl->flags = HWC_SKIP_LAYER;
+        return;
+    }
+
+    hwcl->transform = mOrientation;
+
+    if (needsBlending()) {
+        hwcl->blending = mPremultipliedAlpha ?
+                HWC_BLENDING_PREMULT : HWC_BLENDING_COVERAGE;
+    }
+
+    hwcl->displayFrame.left   = mTransformedBounds.left;
+    hwcl->displayFrame.top    = mTransformedBounds.top;
+    hwcl->displayFrame.right  = mTransformedBounds.right;
+    hwcl->displayFrame.bottom = mTransformedBounds.bottom;
+
+    hwcl->visibleRegionScreen.rects =
+            reinterpret_cast<hwc_rect_t const *>(
+                    visibleRegionScreen.getArray(
+                            &hwcl->visibleRegionScreen.numRects));
+}
+
+void Layer::setPerFrameData(hwc_layer_t* hwcl) {
+    sp<GraphicBuffer> buffer(mBufferManager.getActiveBuffer());
+    if (buffer == NULL) {
+        // this situation can happen if we ran out of memory for instance.
+        // not much we can do. continue to use whatever texture was bound
+        // to this context.
+        hwcl->handle = NULL;
+        return;
+    }
+    hwcl->handle = const_cast<native_handle_t*>(buffer->handle);
+    // TODO: set the crop value properly
+    hwcl->sourceCrop.left   = 0;
+    hwcl->sourceCrop.top    = 0;
+    hwcl->sourceCrop.right  = buffer->width;
+    hwcl->sourceCrop.bottom = buffer->height;
+}
+
 void Layer::reloadTexture(const Region& dirty)
 {
     sp<GraphicBuffer> buffer(mBufferManager.getActiveBuffer());
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index e1d283b..188da6a 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -68,6 +68,8 @@
     bool isFixedSize() const;
 
     // LayerBase interface
+    virtual void setGeometry(hwc_layer_t* hwcl);
+    virtual void setPerFrameData(hwc_layer_t* hwcl);
     virtual void onDraw(const Region& clip) const;
     virtual uint32_t doTransaction(uint32_t transactionFlags);
     virtual void lockPageFlip(bool& recomputeVisibleRegions);
diff --git a/services/surfaceflinger/LayerBase.cpp b/services/surfaceflinger/LayerBase.cpp
index d5aa53f..043d54d 100644
--- a/services/surfaceflinger/LayerBase.cpp
+++ b/services/surfaceflinger/LayerBase.cpp
@@ -39,8 +39,11 @@
 
 // ---------------------------------------------------------------------------
 
+int32_t LayerBase::sSequence = 1;
+
 LayerBase::LayerBase(SurfaceFlinger* flinger, DisplayID display)
     : dpy(display), contentDirty(false),
+      sequence(uint32_t(android_atomic_inc(&sSequence))),
       mFlinger(flinger),
       mNeedsFiltering(false),
       mOrientation(0),
@@ -304,22 +307,17 @@
     }
 }
 
-void LayerBase::draw(const Region& inClip) const
+void LayerBase::setGeometry(hwc_layer_t* hwcl) {
+    hwcl->flags |= HWC_SKIP_LAYER;
+}
+
+void LayerBase::setPerFrameData(hwc_layer_t* hwcl) {
+    hwcl->compositionType = HWC_FRAMEBUFFER;
+    hwcl->handle = NULL;
+}
+
+void LayerBase::draw(const Region& clip) const
 {
-    // invalidate the region we'll update
-    Region clip(inClip);  // copy-on-write, so no-op most of the time
-
-    // Remove the transparent area from the clipping region
-    const State& s = drawingState();
-    if (LIKELY(!s.transparentRegion.isEmpty())) {
-        clip.subtract(transparentRegionScreen);
-        if (clip.isEmpty()) {
-            // usually this won't happen because this should be taken care of
-            // by SurfaceFlinger::computeVisibleRegions()
-            return;
-        }        
-    }
-
     // reset GL state
     glEnable(GL_SCISSOR_TEST);
 
diff --git a/services/surfaceflinger/LayerBase.h b/services/surfaceflinger/LayerBase.h
index 4288cf7..dd1cd05 100644
--- a/services/surfaceflinger/LayerBase.h
+++ b/services/surfaceflinger/LayerBase.h
@@ -35,6 +35,8 @@
 
 #include <pixelflinger/pixelflinger.h>
 
+#include <hardware/hwcomposer.h>
+
 #include "Transform.h"
 
 namespace android {
@@ -53,6 +55,8 @@
 
 class LayerBase : public RefBase
 {
+    static int32_t sSequence;
+
 public:
             LayerBase(SurfaceFlinger* flinger, DisplayID display);
 
@@ -61,6 +65,7 @@
             Region      visibleRegionScreen;
             Region      transparentRegionScreen;
             Region      coveredRegionScreen;
+            int32_t     sequence;
             
             struct State {
                 uint32_t        w;
@@ -105,6 +110,10 @@
 
     virtual const char* getTypeId() const { return "LayerBase"; }
 
+    virtual void setGeometry(hwc_layer_t* hwcl);
+
+    virtual void setPerFrameData(hwc_layer_t* hwcl);
+
     /**
      * draw - performs some global clipping optimizations
      * and calls onDraw().
@@ -210,12 +219,6 @@
     inline  const State&    currentState() const    { return mCurrentState; }
     inline  State&          currentState()          { return mCurrentState; }
 
-    static int compareCurrentStateZ(
-            sp<LayerBase> const * layerA,
-            sp<LayerBase> const * layerB) {
-        return layerA[0]->currentState().z - layerB[0]->currentState().z;
-    }
-
     int32_t  getOrientation() const { return mOrientation; }
     int  tx() const             { return mLeft; }
     int  ty() const             { return mTop; }
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 3167c4c..47bb4c1 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -52,6 +52,7 @@
 #include "SurfaceFlinger.h"
 
 #include "DisplayHardware/DisplayHardware.h"
+#include "DisplayHardware/HWComposer.h"
 
 /* ideally AID_GRAPHICS would be in a semi-public header
  * or there would be a way to map a user/group name to its id
@@ -65,95 +66,6 @@
 namespace android {
 // ---------------------------------------------------------------------------
 
-SurfaceFlinger::LayerVector::LayerVector(const SurfaceFlinger::LayerVector& rhs)
-    : lookup(rhs.lookup), layers(rhs.layers)
-{
-}
-
-ssize_t SurfaceFlinger::LayerVector::indexOf(
-        const sp<LayerBase>& key, size_t guess) const
-{
-    if (guess<size() && lookup.keyAt(guess) == key)
-        return guess;
-    const ssize_t i = lookup.indexOfKey(key);
-    if (i>=0) {
-        const size_t idx = lookup.valueAt(i);
-        LOGE_IF(layers[idx]!=key,
-            "LayerVector[%p]: layers[%d]=%p, key=%p",
-            this, int(idx), layers[idx].get(), key.get());
-        return idx;
-    }
-    return i;
-}
-
-ssize_t SurfaceFlinger::LayerVector::add(
-        const sp<LayerBase>& layer,
-        Vector< sp<LayerBase> >::compar_t cmp)
-{
-    size_t count = layers.size();
-    ssize_t l = 0;
-    ssize_t h = count-1;
-    ssize_t mid;
-    sp<LayerBase> const* a = layers.array();
-    while (l <= h) {
-        mid = l + (h - l)/2;
-        const int c = cmp(a+mid, &layer);
-        if (c == 0)     { l = mid; break; }
-        else if (c<0)   { l = mid+1; }
-        else            { h = mid-1; }
-    }
-    size_t order = l;
-    while (order<count && !cmp(&layer, a+order)) {
-        order++;
-    }
-    count = lookup.size();
-    for (size_t i=0 ; i<count ; i++) {
-        if (lookup.valueAt(i) >= order) {
-            lookup.editValueAt(i)++;
-        }
-    }
-    layers.insertAt(layer, order);
-    lookup.add(layer, order);
-    return order;
-}
-
-ssize_t SurfaceFlinger::LayerVector::remove(const sp<LayerBase>& layer)
-{
-    const ssize_t keyIndex = lookup.indexOfKey(layer);
-    if (keyIndex >= 0) {
-        const size_t index = lookup.valueAt(keyIndex);
-        LOGE_IF(layers[index]!=layer,
-                "LayerVector[%p]: layers[%u]=%p, layer=%p",
-                this, int(index), layers[index].get(), layer.get());
-        layers.removeItemsAt(index);
-        lookup.removeItemsAt(keyIndex);
-        const size_t count = lookup.size();
-        for (size_t i=0 ; i<count ; i++) {
-            if (lookup.valueAt(i) >= size_t(index)) {
-                lookup.editValueAt(i)--;
-            }
-        }
-        return index;
-    }
-    return NAME_NOT_FOUND;
-}
-
-ssize_t SurfaceFlinger::LayerVector::reorder(
-        const sp<LayerBase>& layer,
-        Vector< sp<LayerBase> >::compar_t cmp)
-{
-    // XXX: it's a little lame. but oh well...
-    ssize_t err = remove(layer);
-    if (err >=0)
-        err = add(layer, cmp);
-    return err;
-}
-
-// ---------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#endif
-
 SurfaceFlinger::SurfaceFlinger()
     :   BnSurfaceComposer(), Thread(false),
         mTransactionFlags(0),
@@ -165,6 +77,7 @@
         mAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER"),
         mDump("android.permission.DUMP"),
         mVisibleRegionsDirty(false),
+        mHwWorkListDirty(false),
         mDeferReleaseConsole(false),
         mFreezeDisplay(false),
         mFreezeCount(0),
@@ -457,6 +370,11 @@
     // post surfaces (if needed)
     handlePageFlip();
 
+    if (UNLIKELY(mHwWorkListDirty)) {
+        // build the h/w work list
+        handleWorkList();
+    }
+
     const DisplayHardware& hw(graphicPlane(0).displayHardware());
     if (LIKELY(hw.canDraw() && !isFrozen())) {
         // repaint the framebuffer (if needed)
@@ -521,6 +439,10 @@
 {
     Vector< sp<LayerBase> > ditchedLayers;
 
+    /*
+     * Perform and commit the transaction
+     */
+
     { // scope for the lock
         Mutex::Autolock _l(mStateLock);
         const nsecs_t now = systemTime();
@@ -528,9 +450,15 @@
         handleTransactionLocked(transactionFlags, ditchedLayers);
         mLastTransactionTime = systemTime() - now;
         mDebugInTransaction = 0;
+        mHwWorkListDirty = true;
+        // here the transaction has been committed
     }
 
-    // do this without lock held
+    /*
+     * Clean-up all layers that went away
+     * (do this without the lock held)
+     */
+
     const size_t count = ditchedLayers.size();
     for (size_t i=0 ; i<count ; i++) {
         if (ditchedLayers[i] != 0) {
@@ -764,8 +692,8 @@
 void SurfaceFlinger::handlePageFlip()
 {
     bool visibleRegions = mVisibleRegionsDirty;
-    LayerVector& currentLayers = const_cast<LayerVector&>(
-            mDrawingState.layersSortedByZ);
+    LayerVector& currentLayers(
+            const_cast<LayerVector&>(mDrawingState.layersSortedByZ));
     visibleRegions |= lockPageFlip(currentLayers);
 
         const DisplayHardware& hw = graphicPlane(0).displayHardware();
@@ -773,8 +701,22 @@
         if (visibleRegions) {
             Region opaqueRegion;
             computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion);
+
+            /*
+             *  rebuild the visible layer list
+             */
+            mVisibleLayersSortedByZ.clear();
+            const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
+            size_t count = currentLayers.size();
+            mVisibleLayersSortedByZ.setCapacity(count);
+            for (size_t i=0 ; i<count ; i++) {
+                if (!currentLayers[i]->visibleRegionScreen.isEmpty())
+                    mVisibleLayersSortedByZ.add(currentLayers[i]);
+            }
+
             mWormholeRegion = screenRegion.subtract(opaqueRegion);
             mVisibleRegionsDirty = false;
+            mHwWorkListDirty = true;
         }
 
     unlockPageFlip(currentLayers);
@@ -805,6 +747,21 @@
     }
 }
 
+void SurfaceFlinger::handleWorkList()
+{
+    mHwWorkListDirty = false;
+    HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer());
+    if (hwc.initCheck() == NO_ERROR) {
+        const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ);
+        const size_t count = currentLayers.size();
+        hwc.createWorkList(count);
+        HWComposer::iterator cur(hwc.begin());
+        HWComposer::iterator last(hwc.end());
+        for (size_t i=0 ; (i<count) && (cur!=last) ; ++i, ++cur) {
+            currentLayers[i]->setGeometry(cur);
+        }
+    }
+}
 
 void SurfaceFlinger::handleRepaint()
 {
@@ -869,18 +826,61 @@
         // draw something...
         drawWormhole();
     }
-    const SurfaceFlinger& flinger(*this);
-    const LayerVector& drawingLayers(mDrawingState.layersSortedByZ);
-    const size_t count = drawingLayers.size();
-    sp<LayerBase> const* const layers = drawingLayers.array();
+
+    status_t err = NO_ERROR;
+    const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ);
+    const size_t count = layers.size();
+
+    const DisplayHardware& hw(graphicPlane(0).displayHardware());
+    HWComposer& hwc(hw.getHwComposer());
+    HWComposer::iterator cur(hwc.begin());
+    HWComposer::iterator last(hwc.end());
+
+    // update the per-frame h/w composer data for each layer
+    if (cur != last) {
+        for (size_t i=0 ; i<count && cur!=last ; ++i, ++cur) {
+            layers[i]->setPerFrameData(cur);
+        }
+        err = hwc.prepare();
+        LOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err));
+    }
+
+    // and then, render the layers targeted at the framebuffer
+    Region transparent(hw.bounds());
     for (size_t i=0 ; i<count ; ++i) {
-        const sp<LayerBase>& layer = layers[i];
-        const Region& visibleRegion(layer->visibleRegionScreen);
-        if (!visibleRegion.isEmpty())  {
-            const Region clip(dirty.intersect(visibleRegion));
-            if (!clip.isEmpty()) {
-                layer->draw(clip);
+
+        // see if we need to skip this layer
+        if (!err && cur != last) {
+            if (!((cur->compositionType == HWC_FRAMEBUFFER) ||
+                    (cur->flags & HWC_SKIP_LAYER))) {
+                ++cur;
+                continue;
             }
+            ++cur;
+        }
+
+        // draw the layer into the framebuffer
+        const sp<LayerBase>& layer(layers[i]);
+        transparent.subtractSelf(layer->visibleRegionScreen);
+        const Region clip(dirty.intersect(layer->visibleRegionScreen));
+        if (!clip.isEmpty()) {
+            layer->draw(clip);
+        }
+    }
+
+    // finally clear everything we didn't draw as a result of calling
+    // prepare (this leaves the FB transparent).
+    transparent.andSelf(dirty);
+    if (!transparent.isEmpty()) {
+        glClearColor(0,0,0,0);
+        Region::const_iterator it = transparent.begin();
+        Region::const_iterator const end = transparent.end();
+        const int32_t height = hw.getHeight();
+        while (it != end) {
+            const Rect& r(*it++);
+            const GLint sy = height - (r.top + r.height());
+            glScissor(r.left, sy, r.width(), r.height());
+            glClear(GL_COLOR_BUFFER_BIT);
         }
     }
 }
@@ -1029,8 +1029,7 @@
 
 status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer)
 {
-    ssize_t i = mCurrentState.layersSortedByZ.add(
-                layer, &LayerBase::compareCurrentStateZ);
+    ssize_t i = mCurrentState.layersSortedByZ.add(layer);
     return (i < 0) ? status_t(i) : status_t(NO_ERROR);
 }
 
@@ -1372,9 +1371,10 @@
                     flags |= eTraversalNeeded;
             }
             if (what & eLayerChanged) {
+                ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer);
                 if (layer->setLayer(s.z)) {
-                    mCurrentState.layersSortedByZ.reorder(
-                            layer, &Layer::compareCurrentStateZ);
+                    mCurrentState.layersSortedByZ.removeAt(idx);
+                    mCurrentState.layersSortedByZ.add(layer);
                     // we need traversal (state changed)
                     // AND transaction (list changed)
                     flags |= eTransactionNeeded|eTraversalNeeded;
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 8821e5c..8e286e5 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -40,9 +40,6 @@
 
 #include "MessageQueue.h"
 
-struct copybit_device_t;
-struct overlay_device_t;
-
 namespace android {
 
 // ---------------------------------------------------------------------------
@@ -246,21 +243,19 @@
     status_t setClientState(const sp<Client>& client,
             int32_t count, const layer_state_t* states);
 
-
-    class LayerVector {
+    class LayerVector : public SortedVector< sp<LayerBase> > {
     public:
-        inline              LayerVector() { }
-                            LayerVector(const LayerVector&);
-        inline size_t       size() const { return layers.size(); }
-        inline sp<LayerBase> const* array() const { return layers.array(); }
-        ssize_t             add(const sp<LayerBase>&, Vector< sp<LayerBase> >::compar_t);
-        ssize_t             remove(const sp<LayerBase>&);
-        ssize_t             reorder(const sp<LayerBase>&, Vector< sp<LayerBase> >::compar_t);
-        ssize_t             indexOf(const sp<LayerBase>& key, size_t guess=0) const;
-        inline sp<LayerBase> operator [] (size_t i) const { return layers[i]; }
-    private:
-        KeyedVector< sp<LayerBase> , size_t> lookup;
-        Vector< sp<LayerBase> >              layers;
+        LayerVector() { }
+        LayerVector(const LayerVector& rhs) : SortedVector< sp<LayerBase> >(rhs) { }
+        virtual int do_compare(const void* lhs, const void* rhs) const {
+            const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs));
+            const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs));
+            // sort layers by Z order
+            uint32_t lz = l->currentState().z;
+            uint32_t rz = r->currentState().z;
+            // then by sequence, so we get a stable ordering
+            return (lz != rz) ? (lz - rz) : (l->sequence - r->sequence);
+        }
     };
 
     struct State {
@@ -301,6 +296,7 @@
             void        handlePageFlip();
             bool        lockPageFlip(const LayerVector& currentLayers);
             void        unlockPageFlip(const LayerVector& currentLayers);
+            void        handleWorkList();
             void        handleRepaint();
             void        postFramebuffer();
             void        composeSurfaces(const Region& dirty);
@@ -375,10 +371,13 @@
                 Region                      mInvalidRegion;
                 Region                      mWormholeRegion;
                 bool                        mVisibleRegionsDirty;
+                bool                        mHwWorkListDirty;
                 bool                        mDeferReleaseConsole;
                 bool                        mFreezeDisplay;
                 int32_t                     mFreezeCount;
                 nsecs_t                     mFreezeDisplayTime;
+                Vector< sp<LayerBase> >     mVisibleLayersSortedByZ;
+
 
                 // don't use a lock for these, we don't care
                 int                         mDebugRegion;