1 files changed, 73 insertions, 0 deletions
diff --git a/services/java/com/android/server/AppsLaunchFailureReceiver.java b/services/java/com/android/server/AppsLaunchFailureReceiver.java
new file mode 100644
index 0000000..6ef07aa
--- /dev/null
+++ b/services/java/com/android/server/AppsLaunchFailureReceiver.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2010, T-Mobile USA, Inc.
+ *
+ * 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.server;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.res.Configuration;
+import android.content.res.CustomTheme;
+import android.util.Log;
+import android.app.ActivityManager;
+import android.os.SystemClock;
+
+public class AppsLaunchFailureReceiver extends BroadcastReceiver {
+
+    private static final int FAILURES_THRESHOLD = 5;
+    private static final int EXPIRATION_TIME_IN_MILLISECONDS = 30000; // 30 seconds
+
+    private int mFailuresCount = 0;
+    private long mStartTime = 0;
+
+    // This function implements the following logic.
+    // If after a theme was applied the number of application launch failures
+    // at any moment was equal to FAILURES_THRESHOLD
+    // in less than EXPIRATION_TIME_IN_MILLISECONDS
+    // the default theme is applied unconditionally.
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        String action = intent.getAction();
+        if (action.equals(Intent.ACTION_APP_LAUNCH_FAILURE)) {
+            long currentTime = SystemClock.uptimeMillis();
+            if (currentTime - mStartTime > EXPIRATION_TIME_IN_MILLISECONDS) {
+                // reset both the count and the timer
+                mStartTime = currentTime;
+                mFailuresCount = 0;
+            }
+            if (mFailuresCount <= FAILURES_THRESHOLD) {
+                mFailuresCount++;
+                if (mFailuresCount == FAILURES_THRESHOLD) {
+                    CustomTheme defaultTheme = CustomTheme.getSystemTheme();
+                    ActivityManager am = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
+                    Configuration currentConfig = am.getConfiguration();
+                    currentConfig.customTheme = new CustomTheme(
+                            defaultTheme.getThemeId(),
+                            defaultTheme.getThemePackageName());
+                    am.updateConfiguration(currentConfig);
+                }
+            }
+        } else if (action.equals(Intent.ACTION_APP_LAUNCH_FAILURE_RESET)) {
+            mFailuresCount = 0;
+            mStartTime = SystemClock.uptimeMillis();
+        } else if (action.equals(Intent.ACTION_PACKAGE_ADDED) ||
+                   action.equals(Intent.ACTION_PACKAGE_REMOVED)) {
+            mFailuresCount = 0;
+            mStartTime = SystemClock.uptimeMillis();
+        }
+    }
+
+}