Populate the default workspace earlier

Adds a receiver that populates the default
workspace. It can be called by the system when
it's ready for launcher to preload.

Change-Id: If885fcfd931c459f87e9bb0df4c8bca00906f3c1

AndroidManifest.xml

@@ -23,6 +23,10 @@
 
     <original-package android:name="com.android.launcher2" />
 
+    <permission
+        android:name="com.android.launcher.permission.PRELOAD_WORKSPACE"
+        android:permissionGroup="android.permission-group.SYSTEM_TOOLS"
+        android:protectionLevel="system|signature" />
     <permission
         android:name="com.android.launcher.permission.INSTALL_SHORTCUT"
         android:permissionGroup="android.permission-group.SYSTEM_TOOLS"
@@ -103,6 +107,15 @@
             </intent-filter>
         </activity>
 
+        <!-- Intent received used to prepopulate the default workspace. -->
+        <receiver
+            android:name="com.android.launcher2.PreloadReceiver"
+            android:permission="com.android.launcher.permission.PRELOAD_WORKSPACE">
+            <intent-filter>
+                <action android:name="com.android.launcher.action.PRELOAD_WORKSPACE" />
+            </intent-filter>
+        </receiver>
+
         <!-- Intent received used to install shortcuts from other applications -->
         <receiver
             android:name="com.android.launcher2.InstallShortcutReceiver"

src/com/android/launcher2/LauncherProvider.java

@@ -203,7 +203,7 @@ public class LauncherProvider extends ContentProvider {
         return mOpenHelper.generateNewId();
     }
 
-    public void loadDefaultFavoritesIfNecessary() {
+    synchronized public void loadDefaultFavoritesIfNecessary() {
         String spKey = LauncherApplication.getSharedPreferencesKey();
         SharedPreferences sp = getContext().getSharedPreferences(spKey, Context.MODE_PRIVATE);
         if (sp.getBoolean(DB_CREATED_BUT_DEFAULT_WORKSPACE_NOT_LOADED, false)) {

src/com/android/launcher2/PreloadReceiver.java

@@ -0,0 +1,37 @@
+/*
+ * 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.launcher2;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.util.Log;
+
+public class PreloadReceiver extends BroadcastReceiver {
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        final LauncherApplication app = (LauncherApplication) context.getApplicationContext();
+        final LauncherProvider provider = app.getLauncherProvider();
+        if (provider != null) {
+            new Thread(new Runnable() {
+                public void run() {
+                    provider.loadDefaultFavoritesIfNecessary();
+                }
+            }).start();
+        }
+    }
+}