Back button dismisses notifications again.

Bug: 6441337
Change-Id: Iabc97cd2a3f66ee2af5406807b3023908965b8c8

packages/SystemUI/res/layout-sw600dp/super_status_bar.xml

@@ -18,9 +18,11 @@
 -->
 
 <!-- This is the combined status bar / notification panel window. -->
-<FrameLayout
+<com.android.systemui.statusbar.phone.StatusBarWindowView
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:systemui="http://schemas.android.com/apk/res/com.android.systemui"
+    android:focusable="true"
+    android:descendantFocusability="afterDescendants"
     android:fitsSystemWindows="true"
     >
 
@@ -35,4 +37,4 @@
         android:layout_height="@*android:dimen/status_bar_height"
         />
 
-</FrameLayout>
+</com.android.systemui.statusbar.phone.StatusBarWindowView>

packages/SystemUI/res/layout/super_status_bar.xml

@@ -18,7 +18,7 @@
 -->
 
 <!-- This is the combined status bar / notification panel window. -->
-<FrameLayout
+<com.android.systemui.statusbar.phone.StatusBarWindowView
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:systemui="http://schemas.android.com/apk/res/com.android.systemui"
     android:focusable="true"
@@ -36,4 +36,4 @@
         android:layout_height="@*android:dimen/status_bar_height"
         />
 
-</FrameLayout>
+</com.android.systemui.statusbar.phone.StatusBarWindowView>

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

@@ -148,7 +148,7 @@ public class PhoneStatusBar extends BaseStatusBar {
 
     IWindowManager mWindowManager;
 
-    View mStatusBarWindow;
+    StatusBarWindowView mStatusBarWindow;
     PhoneStatusBarView mStatusBarView;
 
     int mPixelFormat;
@@ -283,11 +283,12 @@ public class PhoneStatusBar extends BaseStatusBar {
 
         mIconSize = res.getDimensionPixelSize(com.android.internal.R.dimen.status_bar_icon_size);
 
-        mStatusBarWindow = View.inflate(context,
+        mStatusBarWindow = (StatusBarWindowView) View.inflate(context,
                 R.layout.super_status_bar, null);
         if (DEBUG) {
             mStatusBarWindow.setBackgroundColor(0x6000FF80);
         }
+        mStatusBarWindow.mService = this;
         mStatusBarWindow.setOnTouchListener(new View.OnTouchListener() {
             @Override
             public boolean onTouch(View v, MotionEvent event) {
@@ -1134,10 +1135,13 @@ public class PhoneStatusBar extends BaseStatusBar {
         // Expand the window to encompass the full screen in anticipation of the drag.
         // This is only possible to do atomically because the status bar is at the top of the screen!
         WindowManager.LayoutParams lp = (WindowManager.LayoutParams) mStatusBarWindow.getLayoutParams();
+        lp.flags &= (~WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
         lp.height = ViewGroup.LayoutParams.MATCH_PARENT;
         final WindowManager wm = WindowManagerImpl.getDefault();
         wm.updateViewLayout(mStatusBarWindow, lp);
 
+        mStatusBarWindow.requestFocus(View.FOCUS_FORWARD);
+
         visibilityChanged(true);
     }
 
@@ -1224,6 +1228,7 @@ public class PhoneStatusBar extends BaseStatusBar {
         // Shrink the window to the size of the status bar only
         WindowManager.LayoutParams lp = (WindowManager.LayoutParams) mStatusBarWindow.getLayoutParams();
         lp.height = getStatusBarHeight();
+        lp.flags |= (WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
         final WindowManager wm = WindowManagerImpl.getDefault();
         wm.updateViewLayout(mStatusBarWindow, lp);
 

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarView.java

@@ -22,6 +22,7 @@ import android.graphics.Canvas;
 import android.graphics.Rect;
 import android.os.SystemClock;
 import android.util.AttributeSet;
+import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarWindowView.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2012 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.statusbar.phone;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.KeyEvent;
+import android.widget.FrameLayout;
+import android.widget.TextSwitcher;
+
+
+public class StatusBarWindowView extends FrameLayout
+{
+    PhoneStatusBar mService;
+
+    public StatusBarWindowView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        boolean down = event.getAction() == KeyEvent.ACTION_DOWN;
+        switch (event.getKeyCode()) {
+        case KeyEvent.KEYCODE_BACK:
+            if (!down) {
+                mService.animateCollapse();
+            }
+            return true;
+        }
+        return super.dispatchKeyEvent(event);
+    }
+}
+