Add support for heavy-weight applications.

Only one can be running at a time, their process can not be killed,
and a notification is posted while it is running.

Change-Id: I843015723947e0c934ae63a1aeee139327c0bc01

5 files changed, 184 insertions, 2 deletions

diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 2a2208f..1fcf186 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -1250,6 +1250,12 @@
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </activity>
+        <activity android:name="com.android.internal.app.HeavyWeightSwitcherActivity"
+                android:theme="@style/Theme.Dialog"
+                android:label="@string/heavy_weight_switcher_title"
+                android:finishOnCloseSystemDialogs="true"
+                android:excludeFromRecents="true">
+        </activity>
         <activity android:name="com.android.internal.app.DisableCarModeActivity"
                 android:theme="@style/Theme.NoDisplay"
                 android:excludeFromRecents="true">
diff --git a/core/res/res/layout/heavy_weight_switcher.xml b/core/res/res/layout/heavy_weight_switcher.xml
new file mode 100644
index 0000000..9acf009
--- /dev/null
+++ b/core/res/res/layout/heavy_weight_switcher.xml
@@ -0,0 +1,145 @@
+<?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.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical" android:padding="4dp"
+    android:gravity="center_horizontal"
+    android:layout_width="wrap_content" android:layout_height="wrap_content">
+
+    <TextView
+        android:layout_width="match_parent" android:layout_height="wrap_content"
+        android:layout_weight="0"
+        android:paddingBottom="8dp"
+        android:text="@string/heavy_weight_switcher_text"/>
+
+    <ImageView android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:scaleType="fitXY"
+        android:src="?android:listDivider" />
+            
+    <LinearLayout android:id="@+id/switch_old"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:minHeight="?android:attr/listPreferredItemHeight"
+        android:orientation="horizontal"
+        android:background="@android:drawable/list_selector_background"
+        android:paddingRight="3dip"
+        android:paddingLeft="3dip"
+        android:paddingTop="5dip"
+        android:paddingBottom="14dip"
+        android:gravity="center_vertical"
+        android:focusable="true" >
+    
+        <ImageView android:id="@+id/old_app_icon"
+            android:layout_width="@android:dimen/app_icon_size"
+            android:layout_height="@android:dimen/app_icon_size"
+            android:layout_marginRight="11dip"
+            android:layout_gravity="center_vertical"
+            android:scaleType="fitCenter"/>
+    
+        <LinearLayout
+            android:orientation="vertical"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:duplicateParentState="true" >
+            <TextView android:id="@+id/old_app_action"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textAppearance="?android:attr/textAppearanceMedium"
+                android:textStyle="bold"
+                android:singleLine="true"
+                android:layout_marginBottom="2dip"
+                android:duplicateParentState="true" />
+            <TextView android:id="@+id/old_app_description"
+                android:layout_marginTop="-4dip"
+                android:layout_gravity="center_vertical"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textAppearance="?android:attr/textAppearanceSmall"
+                android:duplicateParentState="true" />
+        </LinearLayout>
+    </LinearLayout>
+
+    <ImageView android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:scaleType="fitXY"
+        android:src="?android:listDivider" />
+            
+    <LinearLayout android:id="@+id/switch_new"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:minHeight="?android:attr/listPreferredItemHeight"
+        android:orientation="horizontal"
+        android:background="@android:drawable/list_selector_background"
+        android:paddingRight="3dip"
+        android:paddingLeft="3dip"
+        android:paddingTop="5dip"
+        android:paddingBottom="8dip"
+        android:gravity="center_vertical"
+        android:focusable="true" >
+    
+        <ImageView android:id="@+id/new_app_icon"
+            android:layout_width="@android:dimen/app_icon_size"
+            android:layout_height="@android:dimen/app_icon_size"
+            android:layout_marginRight="11dip"
+            android:layout_gravity="center_vertical"
+            android:scaleType="fitCenter"/>
+    
+        <LinearLayout
+            android:orientation="vertical"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:duplicateParentState="true" >
+            <TextView android:id="@+id/new_app_action"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textAppearance="?android:attr/textAppearanceMedium"
+                android:textStyle="bold"
+                android:singleLine="true"
+                android:layout_marginBottom="2dip"
+                android:duplicateParentState="true" />
+            <TextView android:id="@+id/new_app_description"
+                android:layout_marginTop="-4dip"
+                android:layout_gravity="center_vertical"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textAppearance="?android:attr/textAppearanceSmall"
+                android:duplicateParentState="true" />
+        </LinearLayout>
+    </LinearLayout>
+
+    <ImageView android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:scaleType="fitXY"
+        android:src="?android:listDivider" />
+
+    <TextView android:id="@+id/cancel"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:minHeight="?android:attr/listPreferredItemHeight"
+        android:textAppearance="?android:attr/textAppearanceMedium"
+        android:background="@android:drawable/list_selector_background"
+        android:paddingRight="6dip"
+        android:paddingLeft="6dip"
+        android:paddingTop="5dip"
+        android:paddingBottom="8dip"
+        android:textStyle="bold"
+        android:singleLine="true"
+        android:gravity="center"
+        android:focusable="true"
+        android:text="@string/cancel" />
+
+</LinearLayout>
diff --git a/core/res/res/values/attrs_manifest.xml b/core/res/res/values/attrs_manifest.xml
index b4c4811..5ca7b28 100644
--- a/core/res/res/values/attrs_manifest.xml
+++ b/core/res/res/values/attrs_manifest.xml
@@ -740,6 +740,15 @@
         <attr name="restoreNeedsApplication" />
         <attr name="restoreAnyVersion" />
         <attr name="neverEncrypt" />
+        <!-- Declare that this is a heavy-weight application.  This kind of
+             application is not able to save and restore its state on demand,
+             so can not participate in the normal activity lifecycle.  It will
+             not be killed while in the background; the user must explicitly
+             quit it.  Only one such app can be running at a time; if the user
+             tries to launch a second heavy-weight app, they will be prompted
+             to quit the first before doing so.  While a heavy-weight
+             application is running, the user will be informed of this. -->
+        <attr name="heavyWeight" format="boolean" />
     </declare-styleable>
     
     <!-- The <code>permission</code> tag declares a security permission that can be
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 5d18e9e..1932771 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -1245,8 +1245,9 @@
      
   <public type="attr" name="logo" id="0x010102be" />
   <public type="attr" name="xlargeScreens" id="0x010102bf" />
-
+  <public type="attr" name="heavyWeight" id="0x010102c0" />
   <public-padding type="attr" name="kraken_resource_pad" end="0x01010300" />
+  
   <public-padding type="id" name="kraken_resource_pad" end="0x01020040" />
   <public-padding type="anim" name="kraken_resource_pad" end="0x010a0020" />
   <public-padding type="drawable" name="kraken_resource_pad" end="0x01080100" />
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index 613a9a2..e7f892a 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -1935,8 +1935,29 @@
     <!-- Button allowing the user to choose to wait for an application that is not responding to become responsive again. -->
     <string name="wait">Wait</string>
 
+    <!-- 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, and this would be the title. -->
+         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,
+         and this would be the title. -->
     <string name="sendText">Select an action for text</string>
 
     <!-- Title of the dialog where the user is adjusting the phone ringer volume -->