1 files changed, 130 insertions, 0 deletions
diff --git a/services/java/com/android/server/RecognitionManagerService.java b/services/java/com/android/server/RecognitionManagerService.java
new file mode 100644
index 0000000..7305b07
--- /dev/null
+++ b/services/java/com/android/server/RecognitionManagerService.java
@@ -0,0 +1,130 @@
+/*
+ * 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.
+ */
+
+package com.android.server;
+
+import com.android.internal.content.PackageMonitor;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ResolveInfo;
+import android.content.pm.ServiceInfo;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.os.Binder;
+import android.provider.Settings;
+import android.speech.RecognitionService;
+import android.text.TextUtils;
+import android.util.Log;
+
+import java.util.List;
+
+public class RecognitionManagerService extends Binder {
+    final static String TAG = "RecognitionManagerService";
+    
+    final Context mContext;
+    final MyPackageMonitor mMonitor;
+    
+    class MyPackageMonitor extends PackageMonitor {
+        public void onSomePackagesChanged() {
+            ComponentName comp = getCurRecognizer();
+            if (comp == null) {
+                if (anyPackagesAppearing()) {
+                    comp = findAvailRecognizer(null);
+                    if (comp != null) {
+                        setCurRecognizer(comp);
+                    }
+                }
+                return;
+            }
+            
+            int change = isPackageDisappearing(comp.getPackageName()); 
+            if (change == PACKAGE_PERMANENT_CHANGE
+                    || change == PACKAGE_TEMPORARY_CHANGE) {
+                setCurRecognizer(findAvailRecognizer(null));
+                
+            } else if (isPackageModified(comp.getPackageName())) {
+                setCurRecognizer(findAvailRecognizer(comp.getPackageName()));
+            }
+        }
+    }
+    
+    RecognitionManagerService(Context context) {
+        mContext = context;
+        mMonitor = new MyPackageMonitor();
+        mMonitor.register(context, true);
+    }
+    
+    public void systemReady() {
+        ComponentName comp = getCurRecognizer();
+        if (comp != null) {
+            // See if the current recognizer is no longer available.
+            try {
+                mContext.getPackageManager().getServiceInfo(comp, 0);
+            } catch (NameNotFoundException e) {
+                setCurRecognizer(null);
+            }
+        } else {
+            comp = findAvailRecognizer(null);
+            if (comp != null) {
+                setCurRecognizer(comp);
+            }
+        }
+    }
+    
+    ComponentName findAvailRecognizer(String prefPackage) {
+        List<ResolveInfo> available =
+                mContext.getPackageManager().queryIntentServices(
+                        new Intent(RecognitionService.SERVICE_INTERFACE), 0);
+        int numAvailable = available.size();
+    
+        if (numAvailable == 0) {
+            Log.w(TAG, "no available voice recognition services found");
+            return null;
+        } else {
+            if (prefPackage != null) {
+                for (int i=0; i<numAvailable; i++) {
+                    ServiceInfo serviceInfo = available.get(i).serviceInfo;
+                    if (prefPackage.equals(serviceInfo.packageName)) {
+                        return new ComponentName(serviceInfo.packageName, serviceInfo.name);
+                    }
+                }
+            }
+            if (numAvailable > 1) {
+                Log.w(TAG, "more than one voice recognition service found, picking first");
+            }
+    
+            ServiceInfo serviceInfo = available.get(0).serviceInfo;
+            return new ComponentName(serviceInfo.packageName, serviceInfo.name);
+        }
+    }
+    
+    ComponentName getCurRecognizer() {
+        String curRecognizer = Settings.Secure.getString(
+                mContext.getContentResolver(),
+                Settings.Secure.VOICE_RECOGNITION_SERVICE);
+        if (TextUtils.isEmpty(curRecognizer)) {
+            return null;
+        }
+        return ComponentName.unflattenFromString(curRecognizer);
+    }
+    
+    void setCurRecognizer(ComponentName comp) {
+        Settings.Secure.putString(mContext.getContentResolver(),
+                Settings.Secure.VOICE_RECOGNITION_SERVICE,
+                comp != null ? comp.flattenToShortString() : "");
+    }
+}