Merge "Refactoring the focus state to be independent of view focus."
diff --git a/packages/SystemUI/res/values/config.xml b/packages/SystemUI/res/values/config.xml
index bae8017..07c59a9 100644
--- a/packages/SystemUI/res/values/config.xml
+++ b/packages/SystemUI/res/values/config.xml
@@ -136,7 +136,7 @@
     <integer name="touch_acceptance_delay">700</integer>
 
     <!-- The duration in seconds to wait before the dismiss buttons are shown. -->
-    <integer name="recents_task_bar_dismiss_delay_seconds">1</integer>
+    <integer name="recents_task_bar_dismiss_delay_seconds">1000</integer>
 
     <!-- The min animation duration for animating views that are currently visible. -->
     <integer name="recents_filter_animate_current_views_duration">250</integer>
diff --git a/packages/SystemUI/src/com/android/systemui/recents/Constants.java b/packages/SystemUI/src/com/android/systemui/recents/Constants.java
index cdb6b93..6668df9 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/Constants.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/Constants.java
@@ -37,6 +37,8 @@
             public static final boolean EnableTaskFiltering = false;
             // Enables dismiss-all
             public static final boolean EnableDismissAll = false;
+            // Enables fast-toggling
+            public static final boolean EnableFastToggleRecents = false;
             // Enables the thumbnail alpha on the front-most task
             public static final boolean EnableThumbnailAlphaOnFrontmost = false;
             // This disables the search bar integration
diff --git a/packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java b/packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java
index c416967..0adad85 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java
@@ -32,6 +32,7 @@
 import android.os.SystemClock;
 import android.os.UserHandle;
 import android.provider.Settings;
+import android.util.Log;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.ViewStub;
@@ -41,16 +42,21 @@
 import com.android.systemui.recents.events.activity.AppWidgetProviderChangedEvent;
 import com.android.systemui.recents.events.activity.EnterRecentsWindowAnimationStartedEvent;
 import com.android.systemui.recents.events.activity.HideRecentsEvent;
+import com.android.systemui.recents.events.activity.IterateRecentsEvent;
 import com.android.systemui.recents.events.activity.ToggleRecentsEvent;
 import com.android.systemui.recents.events.component.RecentsVisibilityChangedEvent;
 import com.android.systemui.recents.events.component.ScreenPinningRequestEvent;
-import com.android.systemui.recents.events.ui.DismissTaskEvent;
+import com.android.systemui.recents.events.ui.DismissTaskViewEvent;
 import com.android.systemui.recents.events.ui.ResizeTaskEvent;
 import com.android.systemui.recents.events.ui.ShowApplicationInfoEvent;
 import com.android.systemui.recents.events.ui.UserInteractionEvent;
 import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent;
 import com.android.systemui.recents.events.ui.dragndrop.DragStartEvent;
+import com.android.systemui.recents.events.ui.focus.DismissFocusedTaskViewEvent;
+import com.android.systemui.recents.events.ui.focus.FocusNextTaskViewEvent;
+import com.android.systemui.recents.events.ui.focus.FocusPreviousTaskViewEvent;
 import com.android.systemui.recents.misc.Console;
+import com.android.systemui.recents.misc.DozeTrigger;
 import com.android.systemui.recents.misc.ReferenceCountedTrigger;
 import com.android.systemui.recents.misc.SystemServicesProxy;
 import com.android.systemui.recents.model.RecentsPackageMonitor;
@@ -69,6 +75,9 @@
  */
 public class RecentsActivity extends Activity implements RecentsView.RecentsViewCallbacks {
 
+    private final static String TAG = "RecentsActivity";
+    private final static boolean DEBUG = false;
+
     public final static int EVENT_BUS_PRIORITY = Recents.EVENT_BUS_PRIORITY + 1;
 
     RecentsConfiguration mConfig;
@@ -96,6 +105,14 @@
     // Runnable to be executed after we paused ourselves
     Runnable mAfterPauseRunnable;
 
+    // The trigger to automatically launch the current task
+    DozeTrigger mIterateTrigger = new DozeTrigger(500, new Runnable() {
+        @Override
+        public void run() {
+            boolean dismissed = dismissRecentsToFocusedTask(false);
+        }
+    });
+
     /**
      * A common Runnable to finish Recents either by calling finish() (with a custom animation) or
      * launching Home with some ActivityOptions.  Generally we always launch home when we exit
@@ -244,7 +261,24 @@
         MetricsLogger.histogram(this, "overview_task_count", taskCount);
     }
 
-    /** Dismisses recents if we are already visible and the intent is to toggle the recents view */
+    /**
+     * Dismisses recents if we are already visible and the intent is to toggle the recents view.
+     */
+    boolean dismissRecentsToFocusedTask(boolean checkFilteredStackState) {
+        SystemServicesProxy ssp = Recents.getSystemServices();
+        if (ssp.isRecentsTopMost(ssp.getTopMostTask(), null)) {
+            // If we currently have filtered stacks, then unfilter those first
+            if (checkFilteredStackState &&
+                    mRecentsView.unfilterFilteredStacks()) return true;
+            // If we have a focused Task, launch that Task now
+            if (mRecentsView.launchFocusedTask()) return true;
+        }
+        return false;
+    }
+
+    /**
+     * Dismisses recents if we are already visible and the intent is to toggle the recents view.
+     */
     boolean dismissRecentsToFocusedTaskOrHome(boolean checkFilteredStackState) {
         RecentsActivityLaunchState launchState = mConfig.getLaunchState();
         SystemServicesProxy ssp = Recents.getSystemServices();
@@ -390,6 +424,11 @@
             mRecentsView.post(mAfterPauseRunnable);
             mAfterPauseRunnable = null;
         }
+
+        if (Constants.DebugFlags.App.EnableFastToggleRecents) {
+            // Stop the fast-toggle dozer
+            mIterateTrigger.stopDozing();
+        }
     }
 
     @Override
@@ -467,22 +506,27 @@
                 if (event.getRepeatCount() <= 0 || hasRepKeyTimeElapsed) {
                     // Focus the next task in the stack
                     final boolean backward = event.isShiftPressed();
-                    mRecentsView.focusNextTask(!backward);
+                    if (backward) {
+                        EventBus.getDefault().send(new FocusPreviousTaskViewEvent());
+                    } else {
+                        EventBus.getDefault().send(new FocusNextTaskViewEvent());
+                    }
                     mLastTabKeyEventTime = SystemClock.elapsedRealtime();
                 }
                 return true;
             }
             case KeyEvent.KEYCODE_DPAD_UP: {
-                mRecentsView.focusNextTask(true);
+                EventBus.getDefault().send(new FocusNextTaskViewEvent());
                 return true;
             }
             case KeyEvent.KEYCODE_DPAD_DOWN: {
-                mRecentsView.focusNextTask(false);
+                EventBus.getDefault().send(new FocusPreviousTaskViewEvent());
                 return true;
             }
             case KeyEvent.KEYCODE_DEL:
             case KeyEvent.KEYCODE_FORWARD_DEL: {
-                mRecentsView.dismissFocusedTask();
+                EventBus.getDefault().send(new DismissFocusedTaskViewEvent());
+
                 // Keep track of deletions by keyboard
                 MetricsLogger.histogram(this, "overview_task_dismissed_source",
                         Constants.Metrics.DismissSourceKeyboard);
@@ -542,6 +586,16 @@
         dismissRecentsToFocusedTaskOrHome(true /* checkFilteredStackState */);
     }
 
+    public final void onBusEvent(IterateRecentsEvent event) {
+        // Focus the next task
+        EventBus.getDefault().send(new FocusNextTaskViewEvent());
+        mIterateTrigger.poke();
+    }
+
+    public final void onBusEvent(UserInteractionEvent event) {
+        mIterateTrigger.stopDozing();
+    }
+
     public final void onBusEvent(HideRecentsEvent event) {
         if (event.triggeredFromAltTab) {
             // If we are hiding from releasing Alt-Tab, dismiss Recents to the focused app
@@ -558,7 +612,7 @@
         // Try and start the enter animation (or restart it on configuration changed)
         ReferenceCountedTrigger t = new ReferenceCountedTrigger(this, null, null, null);
         ViewAnimation.TaskViewEnterContext ctx = new ViewAnimation.TaskViewEnterContext(t);
-        mRecentsView.startEnterRecentsAnimation(ctx);
+        ctx.postAnimationTrigger.increment();
         if (mSearchWidgetInfo != null) {
             ctx.postAnimationTrigger.addLastDecrementRunnable(new Runnable() {
                 @Override
@@ -570,6 +624,20 @@
                 }
             });
         }
+        ctx.postAnimationTrigger.addLastDecrementRunnable(new Runnable() {
+            @Override
+            public void run() {
+                // If we are not launching with alt-tab and fast-toggle is enabled, then start
+                // the dozer now
+                RecentsActivityLaunchState launchState = mConfig.getLaunchState();
+                if (Constants.DebugFlags.App.EnableFastToggleRecents &&
+                        !launchState.launchedWithAltTab) {
+                    mIterateTrigger.startDozing();
+                }
+            }
+        });
+        mRecentsView.startEnterRecentsAnimation(ctx);
+        ctx.postAnimationTrigger.decrement();
     }
 
     public final void onBusEvent(AppWidgetProviderChangedEvent event) {
@@ -589,7 +657,7 @@
         MetricsLogger.count(this, "overview_app_info", 1);
     }
 
-    public final void onBusEvent(DismissTaskEvent event) {
+    public final void onBusEvent(DismissTaskViewEvent event) {
         // Remove any stored data from the loader
         RecentsTaskLoader loader = Recents.getTaskLoader();
         loader.deleteTaskData(event.task, false);
diff --git a/packages/SystemUI/src/com/android/systemui/recents/RecentsImpl.java b/packages/SystemUI/src/com/android/systemui/recents/RecentsImpl.java
index 3a30a8f..2c8937a 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/RecentsImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/RecentsImpl.java
@@ -40,6 +40,7 @@
 import com.android.systemui.recents.events.EventBus;
 import com.android.systemui.recents.events.activity.EnterRecentsWindowAnimationStartedEvent;
 import com.android.systemui.recents.events.activity.HideRecentsEvent;
+import com.android.systemui.recents.events.activity.IterateRecentsEvent;
 import com.android.systemui.recents.events.activity.ToggleRecentsEvent;
 import com.android.systemui.recents.events.component.RecentsVisibilityChangedEvent;
 import com.android.systemui.recents.events.component.ScreenPinningRequestEvent;
@@ -265,26 +266,38 @@
         mTriggeredFromAltTab = false;
 
         try {
-            // If the user has toggled it too quickly, then just eat up the event here (it's better
-            // than showing a janky screenshot).
-            // NOTE: Ideally, the screenshot mechanism would take the window transform into account
-            if ((SystemClock.elapsedRealtime() - mLastToggleTime) < sMinToggleDelay) {
-                return;
-            }
-
-            // If Recents is the front most activity, then we should just communicate with it
-            // directly to launch the first task or dismiss itself
             SystemServicesProxy ssp = Recents.getSystemServices();
             ActivityManager.RunningTaskInfo topTask = ssp.getTopMostTask();
             MutableBoolean isTopTaskHome = new MutableBoolean(true);
             if (topTask != null && ssp.isRecentsTopMost(topTask, isTopTaskHome)) {
-                // Notify recents to toggle itself
-                EventBus.getDefault().post(new ToggleRecentsEvent());
-                mLastToggleTime = SystemClock.elapsedRealtime();
+                if (Constants.DebugFlags.App.EnableFastToggleRecents) {
+                    // Notify recents to move onto the next task
+                    EventBus.getDefault().post(new IterateRecentsEvent());
+                } else {
+                    // If the user has toggled it too quickly, then just eat up the event here (it's
+                    // better than showing a janky screenshot).
+                    // NOTE: Ideally, the screenshot mechanism would take the window transform into
+                    // account
+                    if ((SystemClock.elapsedRealtime() - mLastToggleTime) < sMinToggleDelay) {
+                        return;
+                    }
+
+                    EventBus.getDefault().post(new ToggleRecentsEvent());
+                    mLastToggleTime = SystemClock.elapsedRealtime();
+                }
                 return;
             } else {
+                // If the user has toggled it too quickly, then just eat up the event here (it's
+                // better than showing a janky screenshot).
+                // NOTE: Ideally, the screenshot mechanism would take the window transform into
+                // account
+                if ((SystemClock.elapsedRealtime() - mLastToggleTime) < sMinToggleDelay) {
+                    return;
+                }
+
                 // Otherwise, start the recents activity
                 startRecentsActivity(topTask, isTopTaskHome.value);
+                mLastToggleTime = SystemClock.elapsedRealtime();
             }
         } catch (ActivityNotFoundException e) {
             Console.logRawError("Failed to launch RecentAppsIntent", e);
diff --git a/packages/SystemUI/src/com/android/systemui/recents/events/EventBus.java b/packages/SystemUI/src/com/android/systemui/recents/events/EventBus.java
index fec0fc5..deae4c8 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/events/EventBus.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/events/EventBus.java
@@ -200,7 +200,8 @@
  */
 public class EventBus extends BroadcastReceiver {
 
-    public static final String TAG = "EventBus";
+    private static final String TAG = "EventBus";
+    private static final boolean DEBUG_TRACE_ALL = false;
 
     /**
      * An event super class that allows us to track internal event state across subscriber
@@ -277,9 +278,6 @@
     // The default priority of all subscribers
     private static final int DEFAULT_SUBSCRIBER_PRIORITY = 1;
 
-    // Used for debugging everything
-    private static final boolean DEBUG_TRACE_ALL = false;
-
     // Orders the handlers by priority and registration time
     private static final Comparator<EventHandler> EVENT_HANDLER_COMPARATOR = new Comparator<EventHandler>() {
         @Override
diff --git a/packages/SystemUI/src/com/android/systemui/recents/events/activity/IterateRecentsEvent.java b/packages/SystemUI/src/com/android/systemui/recents/events/activity/IterateRecentsEvent.java
new file mode 100644
index 0000000..f7b2706
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/recents/events/activity/IterateRecentsEvent.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+package com.android.systemui.recents.events.activity;
+
+import com.android.systemui.recents.events.EventBus;
+
+/**
+ * This is sent when the user taps on the Overview button to iterate to the next item in the
+ * Recents list.
+ */
+public class IterateRecentsEvent extends EventBus.Event {
+    // Simple event
+}
diff --git a/packages/SystemUI/src/com/android/systemui/recents/events/ui/DismissTaskEvent.java b/packages/SystemUI/src/com/android/systemui/recents/events/ui/DismissTaskViewEvent.java
similarity index 89%
rename from packages/SystemUI/src/com/android/systemui/recents/events/ui/DismissTaskEvent.java
rename to packages/SystemUI/src/com/android/systemui/recents/events/ui/DismissTaskViewEvent.java
index 12e5d3d..968890a 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/events/ui/DismissTaskEvent.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/events/ui/DismissTaskViewEvent.java
@@ -23,12 +23,12 @@
 /**
  * This is sent when a {@link TaskView} has been dismissed.
  */
-public class DismissTaskEvent extends EventBus.Event {
+public class DismissTaskViewEvent extends EventBus.Event {
 
     public final Task task;
     public final TaskView taskView;
 
-    public DismissTaskEvent(Task task, TaskView taskView) {
+    public DismissTaskViewEvent(Task task, TaskView taskView) {
         this.task = task;
         this.taskView = taskView;
     }
diff --git a/packages/SystemUI/src/com/android/systemui/recents/events/ui/focus/DismissFocusedTaskViewEvent.java b/packages/SystemUI/src/com/android/systemui/recents/events/ui/focus/DismissFocusedTaskViewEvent.java
new file mode 100644
index 0000000..9f3e9d5
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/recents/events/ui/focus/DismissFocusedTaskViewEvent.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+package com.android.systemui.recents.events.ui.focus;
+
+import com.android.systemui.recents.events.EventBus;
+
+/**
+ * Dismisses the currently focused task view.
+ */
+public class DismissFocusedTaskViewEvent extends EventBus.Event {
+    // Simple event
+}
diff --git a/packages/SystemUI/src/com/android/systemui/recents/events/ui/focus/FocusNextTaskViewEvent.java b/packages/SystemUI/src/com/android/systemui/recents/events/ui/focus/FocusNextTaskViewEvent.java
new file mode 100644
index 0000000..171ab5e
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/recents/events/ui/focus/FocusNextTaskViewEvent.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+package com.android.systemui.recents.events.ui.focus;
+
+import com.android.systemui.recents.events.EventBus;
+
+/**
+ * Focuses the next task view in the stack.
+ */
+public class FocusNextTaskViewEvent extends EventBus.Event {
+    // Simple event
+}
diff --git a/packages/SystemUI/src/com/android/systemui/recents/events/ui/focus/FocusPreviousTaskViewEvent.java b/packages/SystemUI/src/com/android/systemui/recents/events/ui/focus/FocusPreviousTaskViewEvent.java
new file mode 100644
index 0000000..22469e7
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/recents/events/ui/focus/FocusPreviousTaskViewEvent.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+package com.android.systemui.recents.events.ui.focus;
+
+import com.android.systemui.recents.events.EventBus;
+
+/**
+ * Focuses the previous task view in the stack.
+ */
+public class FocusPreviousTaskViewEvent extends EventBus.Event {
+    // Simple event
+}
diff --git a/packages/SystemUI/src/com/android/systemui/recents/misc/DozeTrigger.java b/packages/SystemUI/src/com/android/systemui/recents/misc/DozeTrigger.java
index 735f79f..336d2db 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/misc/DozeTrigger.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/misc/DozeTrigger.java
@@ -19,8 +19,8 @@
 import android.os.Handler;
 
 /**
- * A dozer is a class that fires a trigger after it falls asleep.  You can occasionally poke it to
- * wake it up, but it will fall asleep if left untouched.
+ * A dozer is a class that fires a trigger after it falls asleep.
+ * You can occasionally poke the trigger to wake it up, but it will fall asleep if left untouched.
  */
 public class DozeTrigger {
 
@@ -28,7 +28,7 @@
 
     boolean mIsDozing;
     boolean mHasTriggered;
-    int mDozeDurationSeconds;
+    int mDozeDurationMilliseconds;
     Runnable mSleepRunnable;
 
     // Sleep-runnable
@@ -41,9 +41,9 @@
         }
     };
 
-    public DozeTrigger(int dozeDurationSeconds, Runnable sleepRunnable) {
+    public DozeTrigger(int dozeDurationMilliseconds, Runnable sleepRunnable) {
         mHandler = new Handler();
-        mDozeDurationSeconds = dozeDurationSeconds;
+        mDozeDurationMilliseconds = dozeDurationMilliseconds;
         mSleepRunnable = sleepRunnable;
     }
 
@@ -69,7 +69,7 @@
     /** Poke this dozer to wake it up for a little bit. */
     void forcePoke() {
         mHandler.removeCallbacks(mDozeRunnable);
-        mHandler.postDelayed(mDozeRunnable, mDozeDurationSeconds * 1000);
+        mHandler.postDelayed(mDozeRunnable, mDozeDurationMilliseconds);
         mIsDozing = true;
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java b/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java
index 98e9c75..d5d0713 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java
@@ -49,7 +49,7 @@
 import com.android.systemui.recents.events.EventBus;
 import com.android.systemui.recents.events.activity.DismissRecentsToHomeAnimationStarted;
 import com.android.systemui.recents.events.component.ScreenPinningRequestEvent;
-import com.android.systemui.recents.events.ui.DismissTaskEvent;
+import com.android.systemui.recents.events.ui.DismissTaskViewEvent;
 import com.android.systemui.recents.events.ui.dragndrop.DragDockStateChangedEvent;
 import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent;
 import com.android.systemui.recents.events.ui.dragndrop.DragStartEvent;
@@ -69,6 +69,7 @@
 public class RecentsView extends FrameLayout implements TaskStackView.TaskStackViewCallbacks {
 
     private static final String TAG = "RecentsView";
+    private static final boolean DEBUG = false;
 
     private static final boolean ADD_HEADER_BITMAP = true;
 
@@ -404,22 +405,6 @@
         return super.verifyDrawable(who);
     }
 
-    /** Focuses the next task in the first stack view */
-    public void focusNextTask(boolean forward) {
-        // Get the first stack view
-        if (mTaskStackView != null) {
-            mTaskStackView.focusNextTask(forward, true);
-        }
-    }
-
-    /** Dismisses the focused task. */
-    public void dismissFocusedTask() {
-        // Get the first stack view
-        if (mTaskStackView != null) {
-            mTaskStackView.dismissFocusedTask();
-        }
-    }
-
     /** Unfilters any filtered stacks */
     public boolean unfilterFilteredStacks() {
         if (mStacks != null) {
@@ -562,7 +547,7 @@
         // Disable any focused state before we draw the header
         // Upfront the processing of the thumbnail
         if (tv.isFocusedTask()) {
-            tv.unsetFocusedTask();
+            tv.setFocusedState(false, false /* animated */, false /* requestViewFocus */);
         }
         TaskViewTransform transform = new TaskViewTransform();
         transform = stackView.getStackAlgorithm().getStackTransform(tv.mTask, stackScroll,
@@ -682,7 +667,7 @@
                     } else {
                         // Dismiss the task and return the user to home if we fail to
                         // launch the task
-                        EventBus.getDefault().send(new DismissTaskEvent(task, tv));
+                        EventBus.getDefault().send(new DismissTaskViewEvent(task, tv));
                         if (mCb != null) {
                             mCb.onTaskLaunchFailed();
                         }
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java
index 5928854..9ef3733 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java
@@ -23,6 +23,8 @@
 import android.graphics.Rect;
 import android.graphics.RectF;
 import android.os.Bundle;
+import android.os.SystemService;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
@@ -30,6 +32,7 @@
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.FrameLayout;
 import com.android.systemui.R;
+import com.android.systemui.recents.Constants;
 import com.android.systemui.recents.Recents;
 import com.android.systemui.recents.RecentsActivity;
 import com.android.systemui.recents.RecentsActivityLaunchState;
@@ -37,8 +40,11 @@
 import com.android.systemui.recents.events.EventBus;
 import com.android.systemui.recents.events.activity.PackagesChangedEvent;
 import com.android.systemui.recents.events.component.RecentsVisibilityChangedEvent;
-import com.android.systemui.recents.events.ui.DismissTaskEvent;
+import com.android.systemui.recents.events.ui.DismissTaskViewEvent;
 import com.android.systemui.recents.events.ui.UserInteractionEvent;
+import com.android.systemui.recents.events.ui.focus.DismissFocusedTaskViewEvent;
+import com.android.systemui.recents.events.ui.focus.FocusNextTaskViewEvent;
+import com.android.systemui.recents.events.ui.focus.FocusPreviousTaskViewEvent;
 import com.android.systemui.recents.misc.DozeTrigger;
 import com.android.systemui.recents.misc.SystemServicesProxy;
 import com.android.systemui.recents.misc.Utilities;
@@ -60,6 +66,9 @@
         TaskView.TaskViewCallbacks, TaskStackViewScroller.TaskStackViewScrollerCallbacks,
         ViewPool.ViewPoolConsumer<TaskView, Task> {
 
+    private final static String TAG = "TaskStackView";
+    private final static boolean DEBUG = false;
+
     /** The TaskView callbacks */
     interface TaskStackViewCallbacks {
         public void onTaskViewClicked(TaskStackView stackView, TaskView tv, TaskStack stack, Task t,
@@ -80,14 +89,12 @@
     ArrayList<TaskViewTransform> mCurrentTaskTransforms = new ArrayList<>();
     DozeTrigger mUIDozeTrigger;
     int mFocusedTaskIndex = -1;
-    int mPrevAccessibilityFocusedIndex = -1;
     // Optimizations
     int mStackViewsAnimationDuration;
     boolean mStackViewsDirty = true;
     boolean mStackViewsClipDirty = true;
     boolean mAwaitingFirstLayout = true;
     boolean mStartEnterAnimationRequestedAfterLayout;
-    boolean mStartEnterAnimationCompleted;
     ViewAnimation.TaskViewEnterContext mStartEnterAnimationContext;
 
     Rect mTaskStackBounds = new Rect();
@@ -219,7 +226,6 @@
         mStackViewsDirty = true;
         mStackViewsClipDirty = true;
         mAwaitingFirstLayout = true;
-        mPrevAccessibilityFocusedIndex = -1;
         if (mUIDozeTrigger != null) {
             mUIDozeTrigger.stopDozing();
             mUIDozeTrigger.resetTrigger();
@@ -332,8 +338,6 @@
     /** Synchronizes the views with the model */
     boolean synchronizeStackViewsWithModel() {
         if (mStackViewsDirty) {
-            SystemServicesProxy ssp = Recents.getSystemServices();
-
             // Get all the task transforms
             ArrayList<Task> tasks = mStack.getTasks();
             float stackScroll = mStackScroller.getStackScroll();
@@ -344,8 +348,9 @@
             // Return all the invisible children to the pool
             mTmpTaskViewMap.clear();
             List<TaskView> taskViews = getTaskViews();
+            boolean wasLastFocusedTaskAnimated = false;
+            int lastFocusedTaskIndex = -1;
             int taskViewCount = taskViews.size();
-            boolean reaquireAccessibilityFocus = false;
             for (int i = taskViewCount - 1; i >= 0; i--) {
                 TaskView tv = taskViews.get(i);
                 Task task = tv.getTask();
@@ -353,8 +358,12 @@
                 if (visibleRange[1] <= taskIndex && taskIndex <= visibleRange[0]) {
                     mTmpTaskViewMap.put(task, tv);
                 } else {
+                    if (tv.isFocusedTask()) {
+                        wasLastFocusedTaskAnimated = tv.isFocusAnimated();
+                        lastFocusedTaskIndex = taskIndex;
+                        resetFocusedTask();
+                    }
                     mViewPool.returnViewToPool(tv);
-                    reaquireAccessibilityFocus |= (i == mPrevAccessibilityFocusedIndex);
                 }
             }
 
@@ -385,21 +394,14 @@
                 // Animate the task into place
                 tv.updateViewPropertiesToTaskTransform(mCurrentTaskTransforms.get(taskIndex),
                         mStackViewsAnimationDuration, mRequestUpdateClippingListener);
+            }
 
-                // Request accessibility focus on the next view if we removed the task
-                // that previously held accessibility focus
-                if (reaquireAccessibilityFocus) {
-                    taskViews = getTaskViews();
-                    taskViewCount = taskViews.size();
-                    if (taskViewCount > 0 && ssp.isTouchExplorationEnabled() &&
-                            mPrevAccessibilityFocusedIndex != -1) {
-                        TaskView atv = taskViews.get(taskViewCount - 1);
-                        int indexOfTask = mStack.indexOfTask(atv.getTask());
-                        if (mPrevAccessibilityFocusedIndex != indexOfTask) {
-                            tv.requestAccessibilityFocus();
-                            mPrevAccessibilityFocusedIndex = indexOfTask;
-                        }
-                    }
+            // Update the focus if the previous focused task was returned to the view pool
+            if (lastFocusedTaskIndex != -1) {
+                if (lastFocusedTaskIndex < visibleRange[1]) {
+                    setFocusedTask(visibleRange[1], false, wasLastFocusedTaskAnimated);
+                } else {
+                    setFocusedTask(visibleRange[0], false, wasLastFocusedTaskAnimated);
                 }
             }
 
@@ -473,118 +475,80 @@
         return mStackScroller;
     }
 
-    /** Focuses the task at the specified index in the stack */
-    void focusTask(int taskIndex, boolean scrollToNewPosition, final boolean animateFocusedState) {
-        // Return early if the task is already focused
-        if (taskIndex == mFocusedTaskIndex) return;
+    /**
+     * Sets the focused task to the provided (bounded taskIndex).
+     */
+    private void setFocusedTask(int taskIndex, boolean scrollToTask, final boolean animated) {
+        setFocusedTask(taskIndex, scrollToTask, animated, true);
+    }
 
-        if (0 <= taskIndex && taskIndex < mStack.getTaskCount()) {
-            mFocusedTaskIndex = taskIndex;
-            mPrevAccessibilityFocusedIndex = taskIndex;
+    /**
+     * Sets the focused task to the provided (bounded taskIndex).
+     */
+    private void setFocusedTask(int taskIndex, boolean scrollToTask, final boolean animated,
+                                final boolean requestViewFocus) {
+        // Find the next task to focus
+        int newFocusedTaskIndex = mStack.getTaskCount() > 0 ?
+                Math.max(0, Math.min(mStack.getTaskCount() - 1, taskIndex)) : -1;
+        final Task newFocusedTask = (newFocusedTaskIndex != -1) ?
+                mStack.getTasks().get(newFocusedTaskIndex) : null;
 
-            // Focus the view if possible, otherwise, focus the view after we scroll into position
-            final Task t = mStack.getTasks().get(mFocusedTaskIndex);
-            Runnable postScrollRunnable = new Runnable() {
+        // Reset the last focused task state if changed
+        if (mFocusedTaskIndex != -1) {
+            Task focusedTask = mStack.getTasks().get(mFocusedTaskIndex);
+            if (focusedTask != newFocusedTask) {
+                resetFocusedTask();
+            }
+        }
+
+        mFocusedTaskIndex = newFocusedTaskIndex;
+        if (mFocusedTaskIndex != -1) {
+            Runnable focusTaskRunnable = new Runnable() {
                 @Override
                 public void run() {
-                    TaskView tv = getChildViewForTask(t);
+                    TaskView tv = getChildViewForTask(newFocusedTask);
                     if (tv != null) {
-                        tv.setFocusedTask(animateFocusedState);
-                        tv.requestAccessibilityFocus();
+                        tv.setFocusedState(true, animated, requestViewFocus);
                     }
                 }
             };
 
-            // Scroll the view into position (just center it in the curve)
-            if (scrollToNewPosition) {
-                float newScroll = mLayoutAlgorithm.getStackScrollForTask(t) - 0.5f;
+            if (scrollToTask) {
+                // TODO: Center the newly focused task view
+                float newScroll = mLayoutAlgorithm.getStackScrollForTask(newFocusedTask) - 0.5f;
                 newScroll = mStackScroller.getBoundedStackScroll(newScroll);
-                mStackScroller.animateScroll(mStackScroller.getStackScroll(), newScroll, postScrollRunnable);
+                mStackScroller.animateScroll(mStackScroller.getStackScroll(), newScroll,
+                        focusTaskRunnable);
             } else {
-                if (postScrollRunnable != null) {
-                    postScrollRunnable.run();
-                }
+                focusTaskRunnable.run();
             }
-
         }
     }
 
     /**
-     * Ensures that there is a task focused, if nothing is focused, then we will use the task
-     * at the center of the visible stack.
+     * Sets the focused task relative to the currently focused task.
+     *
+     * @param animated determines whether to actually draw the highlight along with the change in
+     *                            focus.
      */
-    public boolean ensureFocusedTask(boolean findClosestToCenter) {
-        if (mFocusedTaskIndex < 0) {
-            List<TaskView> taskViews = getTaskViews();
-            int taskViewCount = taskViews.size();
-            if (findClosestToCenter) {
-                // If there is no task focused, then find the task that is closes to the center
-                // of the screen and use that as the currently focused task
-                int x = mLayoutAlgorithm.mStackRect.centerX();
-                int y = mLayoutAlgorithm.mStackRect.centerY();
-                for (int i = taskViewCount - 1; i >= 0; i--) {
-                    TaskView tv = taskViews.get(i);
-                    tv.getHitRect(mTmpRect);
-                    if (mTmpRect.contains(x, y)) {
-                        mFocusedTaskIndex = mStack.indexOfTask(tv.getTask());
-                        mPrevAccessibilityFocusedIndex = mFocusedTaskIndex;
-                        break;
-                    }
-                }
-            }
-            // If we can't find the center task, then use the front most index
-            if (mFocusedTaskIndex < 0 && taskViewCount > 0) {
-                TaskView tv = taskViews.get(taskViewCount - 1);
-                mFocusedTaskIndex = mStack.indexOfTask(tv.getTask());
-                mPrevAccessibilityFocusedIndex = mFocusedTaskIndex;
-            }
-        }
-        return mFocusedTaskIndex >= 0;
-    }
-
-    /**
-     * Focuses the next task in the stack.
-     * @param animateFocusedState determines whether to actually draw the highlight along with
-     *                            the change in focus, as well as whether to scroll to fit the
-     *                            task into view.
-     */
-    public void focusNextTask(boolean forward, boolean animateFocusedState) {
+    public void setRelativeFocusedTask(boolean forward, boolean animated) {
         // Find the next index to focus
-        int numTasks = mStack.getTaskCount();
-        if (numTasks == 0) return;
-
-        int direction = (forward ? -1 : 1);
-        int newIndex = mFocusedTaskIndex + direction;
-        if (newIndex >= 0 && newIndex <= (numTasks - 1)) {
-            newIndex = Math.max(0, Math.min(numTasks - 1, newIndex));
-            focusTask(newIndex, true, animateFocusedState);
-        }
+        int newIndex = mFocusedTaskIndex + (forward ? -1 : 1);
+        setFocusedTask(newIndex, true, animated);
     }
 
-    /** Dismisses the focused task. */
-    public void dismissFocusedTask() {
-        // Return early if the focused task index is invalid
-        if (mFocusedTaskIndex < 0 || mFocusedTaskIndex >= mStack.getTaskCount()) {
-            mFocusedTaskIndex = -1;
-            return;
-        }
-
-        Task t = mStack.getTasks().get(mFocusedTaskIndex);
-        TaskView tv = getChildViewForTask(t);
-        tv.dismissTask();
-    }
-
-    /** Resets the focused task. */
+    /**
+     * Resets the focused task.
+     */
     void resetFocusedTask() {
-        if ((0 <= mFocusedTaskIndex) && (mFocusedTaskIndex < mStack.getTaskCount())) {
+        if (mFocusedTaskIndex != -1) {
             Task t = mStack.getTasks().get(mFocusedTaskIndex);
             TaskView tv = getChildViewForTask(t);
             if (tv != null) {
-                tv.unsetFocusedTask();
+                tv.setFocusedState(false, false /* animated */, false /* requestViewFocus */);
             }
         }
         mFocusedTaskIndex = -1;
-        mPrevAccessibilityFocusedIndex = -1;
     }
 
     @Override
@@ -609,12 +573,12 @@
         super.onInitializeAccessibilityNodeInfo(info);
         List<TaskView> taskViews = getTaskViews();
         int taskViewCount = taskViews.size();
-        if (taskViewCount > 1 && mPrevAccessibilityFocusedIndex != -1) {
+        if (taskViewCount > 1 && mFocusedTaskIndex != -1) {
             info.setScrollable(true);
-            if (mPrevAccessibilityFocusedIndex > 0) {
+            if (mFocusedTaskIndex > 0) {
                 info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
             }
-            if (mPrevAccessibilityFocusedIndex < mStack.getTaskCount() - 1) {
+            if (mFocusedTaskIndex < mStack.getTaskCount() - 1) {
                 info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
             }
         }
@@ -630,22 +594,14 @@
         if (super.performAccessibilityAction(action, arguments)) {
             return true;
         }
-        if (ensureFocusedTask(false)) {
-            switch (action) {
-                case AccessibilityNodeInfo.ACTION_SCROLL_FORWARD: {
-                    if (mPrevAccessibilityFocusedIndex > 0) {
-                        focusNextTask(true, false);
-                        return true;
-                    }
-                }
-                break;
-                case AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD: {
-                    if (mPrevAccessibilityFocusedIndex < mStack.getTaskCount() - 1) {
-                        focusNextTask(false, false);
-                        return true;
-                    }
-                }
-                break;
+        switch (action) {
+            case AccessibilityNodeInfo.ACTION_SCROLL_FORWARD: {
+                setRelativeFocusedTask(true, false /* animated */);
+                return true;
+            }
+            case AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD: {
+                setRelativeFocusedTask(false, false /* animated */);
+                return true;
             }
         }
         return false;
@@ -678,7 +634,7 @@
 
     /** Computes the stack and task rects */
     public void computeRects(int windowWidth, int windowHeight, Rect taskStackBounds,
-            boolean launchedWithAltTab, boolean launchedFromHome) {
+                             boolean launchedWithAltTab, boolean launchedFromHome) {
         // Compute the rects in the stack algorithm
         mLayoutAlgorithm.computeRects(windowWidth, windowHeight, taskStackBounds);
 
@@ -741,12 +697,12 @@
                 mTmpRect.setEmpty();
             }
             tv.measure(
-                MeasureSpec.makeMeasureSpec(
-                        mLayoutAlgorithm.mTaskRect.width() + mTmpRect.left + mTmpRect.right,
-                        MeasureSpec.EXACTLY),
-                MeasureSpec.makeMeasureSpec(
-                        mLayoutAlgorithm.mTaskRect.height() + mTmpRect.top + mTmpRect.bottom,
-                        MeasureSpec.EXACTLY));
+                    MeasureSpec.makeMeasureSpec(
+                            mLayoutAlgorithm.mTaskRect.width() + mTmpRect.left + mTmpRect.right,
+                            MeasureSpec.EXACTLY),
+                    MeasureSpec.makeMeasureSpec(
+                            mLayoutAlgorithm.mTaskRect.height() + mTmpRect.top + mTmpRect.bottom,
+                            MeasureSpec.EXACTLY));
         }
 
         setMeasuredDimension(width, height);
@@ -815,18 +771,12 @@
             mStartEnterAnimationContext = null;
         }
 
-        // When Alt-Tabbing, focus the previous task (but leave the animation until we finish the
-        // enter animation).
+        // Set the task focused state without requesting view focus, and leave the focus animations
+        // until after the enter-animation
         RecentsActivityLaunchState launchState = mConfig.getLaunchState();
-        if (launchState.launchedWithAltTab) {
-            if (launchState.launchedFromAppWithThumbnail) {
-                focusTask(Math.max(0, mStack.getTaskCount() - 2), false,
-                        launchState.launchedHasConfigurationChanged);
-            } else {
-                focusTask(Math.max(0, mStack.getTaskCount() - 1), false,
-                        launchState.launchedHasConfigurationChanged);
-            }
-        }
+        int taskOffset = launchState.launchedFromHome ? -1 : -2;
+        setFocusedTask(mStack.getTaskCount() + taskOffset, false /* scrollToTask */,
+                false /* animated */, false /* requestViewFocus */);
 
         // Start dozing
         mUIDozeTrigger.startDozing();
@@ -874,32 +824,17 @@
             ctx.postAnimationTrigger.addLastDecrementRunnable(new Runnable() {
                 @Override
                 public void run() {
-                    mStartEnterAnimationCompleted = true;
                     // Poke the dozer to restart the trigger after the animation completes
                     mUIDozeTrigger.poke();
 
-                    SystemServicesProxy ssp = Recents.getSystemServices();
-                    List<TaskView> taskViews = getTaskViews();
-                    int taskViewCount = taskViews.size();
-                    if (taskViewCount > 0) {
-                        // Focus the first view if accessibility is enabled
-                        if (ssp.isTouchExplorationEnabled()) {
-                            TaskView tv = taskViews.get(taskViewCount - 1);
-                            tv.requestAccessibilityFocus();
-                            mPrevAccessibilityFocusedIndex = mStack.indexOfTask(tv.getTask());
-                        }
-                    }
-
-                    // Start the focus animation when alt-tabbing
-                    ArrayList<Task> tasks = mStack.getTasks();
-                    RecentsActivityLaunchState launchState = mConfig.getLaunchState();
-                    if (launchState.launchedWithAltTab &&
-                            !launchState.launchedHasConfigurationChanged &&
-                            0 <= mFocusedTaskIndex && mFocusedTaskIndex < tasks.size()) {
-                        TaskView tv = getChildViewForTask(tasks.get(mFocusedTaskIndex));
-                        if (tv != null) {
-                            tv.setFocusedTask(true);
-                        }
+                    // Update the focused state here -- since we only set the focused task without
+                    // requesting view focus in onFirstLayout(), actually request view focus and
+                    // animate the focused state if we are alt-tabbing now, after the window enter
+                    // animation is completed
+                    if (mFocusedTaskIndex != -1) {
+                        RecentsActivityLaunchState launchState = mConfig.getLaunchState();
+                        setFocusedTask(mFocusedTaskIndex, false /* scrollToTask */,
+                                launchState.launchedWithAltTab);
                     }
                 }
             });
@@ -1132,11 +1067,6 @@
     public void prepareViewToEnterPool(TaskView tv) {
         Task task = tv.getTask();
 
-        // Clear the accessibility focus for that view
-        if (tv.isAccessibilityFocused()) {
-            tv.clearAccessibilityFocus();
-        }
-
         // Report that this tasks's data is no longer being used
         Recents.getTaskLoader().unloadTaskData(task);
 
@@ -1167,11 +1097,6 @@
         // If the doze trigger has already fired, then update the state for this task view
         tv.setNoUserInteractionState();
 
-        // If we've finished the start animation, then ensure we always enable the focus animations
-        if (mStartEnterAnimationCompleted) {
-            tv.enableFocusAnimations();
-        }
-
         // Find the index where this task should be placed in the stack
         int insertIndex = -1;
         int taskIndex = mStack.indexOfTask(task);
@@ -1231,13 +1156,6 @@
         }
     }
 
-    @Override
-    public void onTaskViewFocusChanged(TaskView tv, boolean focused) {
-        if (focused) {
-            mFocusedTaskIndex = mStack.indexOfTask(tv.getTask());
-        }
-    }
-
     /**** TaskStackViewScroller.TaskStackViewScrollerCallbacks ****/
 
     @Override
@@ -1259,13 +1177,13 @@
         for (int i = tasks.size() - 1; i >= 0; i--) {
             final Task t = tasks.get(i);
             if (removedComponents.contains(t.key.getComponent())) {
-                TaskView tv = getChildViewForTask(t);
+                final TaskView tv = getChildViewForTask(t);
                 if (tv != null) {
                     // For visible children, defer removing the task until after the animation
                     tv.startDeleteTaskAnimation(new Runnable() {
                         @Override
                         public void run() {
-                            mStack.removeTask(t);
+                            removeTaskViewFromStack(tv);
                         }
                     }, 0);
                 } else {
@@ -1276,33 +1194,23 @@
         }
     }
 
-    public final void onBusEvent(DismissTaskEvent event) {
-        TaskView tv = event.taskView;
-        Task task = tv.getTask();
-        int taskIndex = mStack.indexOfTask(task);
-        boolean taskWasFocused = tv.isFocusedTask();
+    public final void onBusEvent(DismissTaskViewEvent event) {
+        removeTaskViewFromStack(event.taskView);
+    }
 
-        // Announce for accessibility
-        tv.announceForAccessibility(getContext().getString(R.string.accessibility_recents_item_dismissed,
-                tv.getTask().activityLabel));
+    public final void onBusEvent(FocusNextTaskViewEvent event) {
+        setRelativeFocusedTask(true, true);
+    }
 
-        // Remove the task from the view
-        mStack.removeTask(task);
+    public final void onBusEvent(FocusPreviousTaskViewEvent event) {
+        setRelativeFocusedTask(false, true);
+    }
 
-        // If the dismissed task was focused, then we should focus the new task in the same index
-        if (taskWasFocused) {
-            ArrayList<Task> tasks = mStack.getTasks();
-            int nextTaskIndex = Math.min(tasks.size() - 1, taskIndex - 1);
-            if (nextTaskIndex >= 0) {
-                Task nextTask = tasks.get(nextTaskIndex);
-                TaskView nextTv = getChildViewForTask(nextTask);
-                if (nextTv != null) {
-                    // Focus the next task, and only animate the visible state if we are launched
-                    // from Alt-Tab
-                    RecentsActivityLaunchState launchState = mConfig.getLaunchState();
-                    nextTv.setFocusedTask(launchState.launchedWithAltTab);
-                }
-            }
+    public final void onBusEvent(DismissFocusedTaskViewEvent event) {
+        if (mFocusedTaskIndex != -1) {
+            Task t = mStack.getTasks().get(mFocusedTaskIndex);
+            TaskView tv = getChildViewForTask(t);
+            tv.dismissTask();
         }
     }
 
@@ -1316,4 +1224,32 @@
             reset();
         }
     }
+
+    /**
+     * Removes the task from the stack, and updates the focus to the next task in the stack if the
+     * removed TaskView was focused.
+     */
+    private void removeTaskViewFromStack(TaskView tv) {
+        SystemServicesProxy ssp = Recents.getSystemServices();
+        Task task = tv.getTask();
+        int taskIndex = mStack.indexOfTask(task);
+        boolean taskWasFocused = tv.isFocusedTask();
+
+        // Reset the previously focused task before it is removed from the stack
+        resetFocusedTask();
+
+        // Announce for accessibility
+        tv.announceForAccessibility(getContext().getString(
+                R.string.accessibility_recents_item_dismissed, tv.getTask().activityLabel));
+
+        // Remove the task from the stack
+        mStack.removeTask(task);
+
+        if (taskWasFocused || ssp.isTouchExplorationEnabled()) {
+            // If the dismissed task was focused or if we are in touch exploration mode, then focus
+            // the next task
+            RecentsActivityLaunchState launchState = mConfig.getLaunchState();
+            setFocusedTask(taskIndex - 1, true /* scrollToTask */, launchState.launchedWithAltTab);
+        }
+    }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewTouchHandler.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewTouchHandler.java
index 1274318..3a1a987 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewTouchHandler.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackViewTouchHandler.java
@@ -28,7 +28,7 @@
 import com.android.systemui.recents.Constants;
 import com.android.systemui.recents.events.EventBus;
 import com.android.systemui.recents.events.activity.HideRecentsEvent;
-import com.android.systemui.recents.events.ui.DismissTaskEvent;
+import com.android.systemui.recents.events.ui.DismissTaskViewEvent;
 
 import java.util.List;
 
@@ -408,13 +408,9 @@
                     // Find the front most task and scroll the next task to the front
                     float vScroll = ev.getAxisValue(MotionEvent.AXIS_VSCROLL);
                     if (vScroll > 0) {
-                        if (mSv.ensureFocusedTask(true)) {
-                            mSv.focusNextTask(true, false);
-                        }
+                        mSv.setRelativeFocusedTask(true, false /* animated */);
                     } else {
-                        if (mSv.ensureFocusedTask(true)) {
-                            mSv.focusNextTask(false, false);
-                        }
+                        mSv.setRelativeFocusedTask(false, false /* animated */);
                     }
                     return true;
             }
@@ -461,7 +457,7 @@
         // Re-enable touch events from this task view
         tv.setTouchEnabled(true);
         // Remove the task view from the stack
-        EventBus.getDefault().send(new DismissTaskEvent(tv.getTask(), tv));
+        EventBus.getDefault().send(new DismissTaskViewEvent(tv.getTask(), tv));
         // Keep track of deletions by keyboard
         MetricsLogger.histogram(tv.getContext(), "overview_task_dismissed_source",
                 Constants.Metrics.DismissSourceSwipeGesture);
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java
index bab4da7..0a5ee79 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java
@@ -29,8 +29,8 @@
 import android.graphics.Point;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
-import android.graphics.Rect;
 import android.util.AttributeSet;
+import android.util.Log;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewOutlineProvider;
@@ -40,13 +40,15 @@
 import android.widget.FrameLayout;
 import com.android.systemui.R;
 import com.android.systemui.recents.Constants;
+import com.android.systemui.recents.Recents;
 import com.android.systemui.recents.RecentsActivity;
 import com.android.systemui.recents.RecentsActivityLaunchState;
 import com.android.systemui.recents.RecentsConfiguration;
 import com.android.systemui.recents.events.EventBus;
-import com.android.systemui.recents.events.ui.DismissTaskEvent;
+import com.android.systemui.recents.events.ui.DismissTaskViewEvent;
 import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent;
 import com.android.systemui.recents.events.ui.dragndrop.DragStartEvent;
+import com.android.systemui.recents.misc.SystemServicesProxy;
 import com.android.systemui.recents.misc.Utilities;
 import com.android.systemui.recents.model.Task;
 import com.android.systemui.statusbar.phone.PhoneStatusBar;
@@ -55,11 +57,13 @@
 public class TaskView extends FrameLayout implements Task.TaskCallbacks,
         View.OnClickListener, View.OnLongClickListener {
 
+    private final static String TAG = "TaskView";
+    private final static boolean DEBUG = false;
+
     /** The TaskView callbacks */
     interface TaskViewCallbacks {
         public void onTaskViewClicked(TaskView tv, Task task, boolean lockToTask);
         public void onTaskViewClipStateChanged(TaskView tv);
-        public void onTaskViewFocusChanged(TaskView tv, boolean focused);
     }
 
     RecentsConfiguration mConfig;
@@ -76,6 +80,7 @@
     Task mTask;
     boolean mTaskDataLoaded;
     boolean mIsFocused;
+    boolean mIsFocusAnimated;
     boolean mFocusAnimationsEnabled;
     boolean mClipViewInStack;
     AnimateableViewBounds mViewBounds;
@@ -397,15 +402,6 @@
             ctx.postAnimationTrigger.increment();
             startDelay = delay;
         }
-
-        // Enable the focus animations from this point onwards so that they aren't affected by the
-        // window transitions
-        postDelayed(new Runnable() {
-            @Override
-            public void run() {
-                enableFocusAnimations();
-            }
-        }, startDelay);
     }
 
     public void fadeInActionButton(int delay, int duration) {
@@ -547,7 +543,7 @@
         startDeleteTaskAnimation(new Runnable() {
             @Override
             public void run() {
-                EventBus.getDefault().send(new DismissTaskEvent(mTask, tv));
+                EventBus.getDefault().send(new DismissTaskViewEvent(mTask, tv));
             }
         }, 0);
     }
@@ -620,6 +616,8 @@
                 anim.addListener(postAnimRunnable);
             }
             anim.start();
+        } else {
+            postAnimRunnable.onAnimationEnd(null);
         }
     }
 
@@ -641,58 +639,32 @@
     /**** View focus state ****/
 
     /**
-     * Sets the focused task explicitly. We need a separate flag because requestFocus() won't happen
-     * if the view is not currently visible, or we are in touch state (where we still want to keep
-     * track of focus).
+     * Explicitly sets the focused state of this task.
      */
-    public void setFocusedTask(boolean animateFocusedState) {
-        mIsFocused = true;
-        if (mFocusAnimationsEnabled) {
-            // Focus the header bar
-            mHeaderView.onTaskViewFocusChanged(true, animateFocusedState);
-        }
-        // Update the thumbnail alpha with the focus
-        mThumbnailView.onFocusChanged(true);
-        // Call the callback
-        if (mCb != null) {
-            mCb.onTaskViewFocusChanged(this, true);
-        }
-        // Workaround, we don't always want it focusable in touch mode, but we want the first task
-        // to be focused after the enter-recents animation, which can be triggered from either touch
-        // or keyboard
-        setFocusableInTouchMode(true);
-        requestFocus();
-        setFocusableInTouchMode(false);
-        invalidate();
-    }
-
-    /**
-     * Unsets the focused task explicitly.
-     */
-    void unsetFocusedTask() {
-        mIsFocused = false;
-        if (mFocusAnimationsEnabled) {
-            // Un-focus the header bar
-            mHeaderView.onTaskViewFocusChanged(false, true);
+    public void setFocusedState(boolean isFocused, boolean animated, boolean requestViewFocus) {
+        if (DEBUG) {
+            Log.d(TAG, "setFocusedState: " + mTask.activityLabel + " focused: " + isFocused +
+                    " mIsFocused: " + mIsFocused + " animated: " + animated +
+                    " requestViewFocus: " + requestViewFocus + " isFocused(): " + isFocused() +
+                    " isAccessibilityFocused(): " + isAccessibilityFocused());
         }
 
-        // Update the thumbnail alpha with the focus
-        mThumbnailView.onFocusChanged(false);
-        // Call the callback
-        if (mCb != null) {
-            mCb.onTaskViewFocusChanged(this, false);
-        }
-        invalidate();
-    }
-
-    /**
-     * Updates the explicitly focused state when the view focus changes.
-     */
-    @Override
-    protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) {
-        super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);
-        if (!gainFocus) {
-            unsetFocusedTask();
+        SystemServicesProxy ssp = Recents.getSystemServices();
+        mIsFocused = isFocused;
+        mIsFocusAnimated = animated;
+        mHeaderView.onTaskViewFocusChanged(isFocused, animated);
+        mThumbnailView.onFocusChanged(isFocused);
+        if (isFocused) {
+            if (requestViewFocus && !isFocused()) {
+                requestFocus();
+            }
+            if (requestViewFocus && !isAccessibilityFocused() && ssp.isTouchExplorationEnabled()) {
+                requestAccessibilityFocus();
+            }
+        } else {
+            if (isAccessibilityFocused() && ssp.isTouchExplorationEnabled()) {
+                clearAccessibilityFocus();
+            }
         }
     }
 
@@ -700,17 +672,14 @@
      * Returns whether we have explicitly been focused.
      */
     public boolean isFocusedTask() {
-        return mIsFocused || isFocused();
+        return mIsFocused;
     }
 
-    /** Enables all focus animations. */
-    void enableFocusAnimations() {
-        boolean wasFocusAnimationsEnabled = mFocusAnimationsEnabled;
-        mFocusAnimationsEnabled = true;
-        if (mIsFocused && !wasFocusAnimationsEnabled) {
-            // Re-notify the header if we were focused and animations were not previously enabled
-            mHeaderView.onTaskViewFocusChanged(true, true);
-        }
+    /**
+     * Returns whether this focused task is animated.
+     */
+    public boolean isFocusAnimated() {
+        return mIsFocusAnimated;
     }
 
     public void disableLayersForOneFrame() {
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskViewHeader.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskViewHeader.java
index e1e07ef..f6353f8 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskViewHeader.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskViewHeader.java
@@ -39,7 +39,6 @@
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewOutlineProvider;
-import android.view.accessibility.AccessibilityManager;
 import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 import android.widget.FrameLayout;
@@ -244,9 +243,8 @@
         mMoveTaskButton.setOnClickListener(this);
 
         // In accessibility, a single click on the focused app info button will show it
-        AccessibilityManager am = (AccessibilityManager) getContext().
-                getSystemService(Context.ACCESSIBILITY_SERVICE);
-        if (am != null && am.isEnabled()) {
+        SystemServicesProxy ssp = Recents.getSystemServices();
+        if (ssp.isTouchExplorationEnabled()) {
             mApplicationIcon.setOnClickListener(this);
         }
     }
@@ -369,9 +367,6 @@
 
     /** Notifies the associated TaskView has been focused. */
     void onTaskViewFocusChanged(boolean focused, boolean animateFocusedState) {
-        // If we are not animating the visible state, just return
-        if (!animateFocusedState) return;
-
         boolean isRunning = false;
         if (mFocusAnimator != null) {
             isRunning = mFocusAnimator.isRunning();
@@ -379,6 +374,9 @@
         }
 
         if (focused) {
+            // If we are not animating the visible state, just return
+            if (!animateFocusedState) return;
+
             int currentColor = mBackgroundColor;
             int secondaryColor = getSecondaryColor(mCurrentPrimaryColor, mCurrentPrimaryColorIsDark);
             int[][] states = new int[][] {