| /* |
| * Copyright (C) 2013 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.contacts.common.extensions; |
| |
| import android.content.Context; |
| import android.util.Log; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Properties; |
| |
| |
| /* |
| * A framework for adding extensions to Dialer. This class reads a property file from |
| * assets/contacts_extensions.properties and loads extension classes that an app has defined. If |
| * an extension class was not defined, null is returned. |
| */ |
| public class ExtensionsFactory { |
| |
| private static String TAG = "ExtensionsFactory"; |
| |
| // Config filename for mappings of various class names to their custom |
| // implementations. |
| private static final String EXTENSIONS_PROPERTIES = "contacts_extensions.properties"; |
| |
| private static final String EXTENDED_PHONE_DIRECTORIES_KEY = "extendedPhoneDirectories"; |
| |
| private static Properties sProperties = null; |
| private static ExtendedPhoneDirectoriesManager mExtendedPhoneDirectoriesManager = null; |
| |
| public static void init(Context context) { |
| if (sProperties != null) { |
| return; |
| } |
| try { |
| final InputStream fileStream = context.getAssets().open(EXTENSIONS_PROPERTIES); |
| sProperties = new Properties(); |
| sProperties.load(fileStream); |
| fileStream.close(); |
| |
| final String className = sProperties.getProperty(EXTENDED_PHONE_DIRECTORIES_KEY); |
| if (className != null) { |
| mExtendedPhoneDirectoriesManager = createInstance(className); |
| } else { |
| Log.d(TAG, EXTENDED_PHONE_DIRECTORIES_KEY + " not found in properties file."); |
| } |
| |
| } catch (FileNotFoundException e) { |
| // No custom extensions. Ignore. |
| Log.d(TAG, "No custom extensions."); |
| } catch (IOException e) { |
| Log.d(TAG, e.toString()); |
| } |
| } |
| |
| private static <T> T createInstance(String className) { |
| try { |
| Class<?> c = Class.forName(className); |
| //noinspection unchecked |
| return (T) c.newInstance(); |
| } catch (ClassNotFoundException e) { |
| Log.e(TAG, className + ": unable to create instance.", e); |
| } catch (IllegalAccessException e) { |
| Log.e(TAG, className + ": unable to create instance.", e); |
| } catch (InstantiationException e) { |
| Log.e(TAG, className + ": unable to create instance.", e); |
| } |
| return null; |
| } |
| |
| public static ExtendedPhoneDirectoriesManager getExtendedPhoneDirectoriesManager() { |
| return mExtendedPhoneDirectoriesManager; |
| } |
| } |