1 files changed, 69 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/latin/TargetApplicationGetter.java b/java/src/com/android/inputmethod/latin/TargetApplicationGetter.java
new file mode 100644
index 000000000..4fb2e9704
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/TargetApplicationGetter.java
@@ -0,0 +1,69 @@
+/*
+ * 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.inputmethod.latin;
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.os.AsyncTask;
+import android.util.LruCache;
+
+public class TargetApplicationGetter extends AsyncTask<String, Void, ApplicationInfo> {
+
+    private static final int MAX_CACHE_ENTRIES = 64; // arbitrary
+    private static LruCache<String, ApplicationInfo> sCache =
+            new LruCache<String, ApplicationInfo>(MAX_CACHE_ENTRIES);
+
+    public static ApplicationInfo getCachedApplicationInfo(final String packageName) {
+        return sCache.get(packageName);
+    }
+    public static void removeApplicationInfoCache(final String packageName) {
+        sCache.remove(packageName);
+    }
+
+    public interface OnTargetApplicationKnownListener {
+        public void onTargetApplicationKnown(final ApplicationInfo info);
+    }
+
+    private Context mContext;
+    private final OnTargetApplicationKnownListener mListener;
+
+    public TargetApplicationGetter(final Context context,
+            final OnTargetApplicationKnownListener listener) {
+        mContext = context;
+        mListener = listener;
+    }
+
+    @Override
+    protected ApplicationInfo doInBackground(final String... packageName) {
+        final PackageManager pm = mContext.getPackageManager();
+        mContext = null; // Bazooka-powered anti-leak device
+        try {
+            final ApplicationInfo targetAppInfo =
+                    pm.getApplicationInfo(packageName[0], 0 /* flags */);
+            sCache.put(packageName[0], targetAppInfo);
+            return targetAppInfo;
+        } catch (android.content.pm.PackageManager.NameNotFoundException e) {
+            return null;
+        }
+    }
+
+    @Override
+    protected void onPostExecute(final ApplicationInfo info) {
+        mListener.onTargetApplicationKnown(info);
+    }
+}