DictionaryPackInstallBroadcastReceiver.java revision cba93f50c3d46ada773ec49435689dc3e2094385
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License. 15 */ 16 17package com.android.inputmethod.latin; 18 19import android.content.BroadcastReceiver; 20import android.content.Context; 21import android.content.Intent; 22import android.content.pm.PackageInfo; 23import android.content.pm.PackageManager; 24import android.content.pm.ProviderInfo; 25import android.net.Uri; 26 27/** 28 * Takes action to reload the necessary data when a dictionary pack was added/removed. 29 */ 30public class DictionaryPackInstallBroadcastReceiver extends BroadcastReceiver { 31 32 final LatinIME mService; 33 34 public DictionaryPackInstallBroadcastReceiver(final LatinIME service) { 35 mService = service; 36 } 37 38 @Override 39 public void onReceive(Context context, Intent intent) { 40 final String action = intent.getAction(); 41 final PackageManager manager = context.getPackageManager(); 42 43 // We need to reread the dictionary if a new dictionary package is installed. 44 if (action.equals(Intent.ACTION_PACKAGE_ADDED)) { 45 final Uri packageUri = intent.getData(); 46 if (null == packageUri) return; // No package name : we can't do anything 47 final String packageName = packageUri.getSchemeSpecificPart(); 48 if (null == packageName) return; 49 final PackageInfo packageInfo; 50 try { 51 packageInfo = manager.getPackageInfo(packageName, PackageManager.GET_PROVIDERS); 52 } catch (android.content.pm.PackageManager.NameNotFoundException e) { 53 return; // No package info : we can't do anything 54 } 55 final ProviderInfo[] providers = packageInfo.providers; 56 if (null == providers) return; // No providers : it is not a dictionary. 57 58 // Search for some dictionary pack in the just-installed package. If found, reread. 59 boolean found = false; 60 for (ProviderInfo info : providers) { 61 if (BinaryDictionary.DICTIONARY_PACK_AUTHORITY.equals(info.authority)) { 62 mService.resetSuggestMainDict(); 63 return; 64 } 65 } 66 // If we come here none of the authorities matched the one we searched for. 67 // We can exit safely. 68 return; 69 } else if (action.equals(Intent.ACTION_PACKAGE_REMOVED) 70 && !intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) { 71 // When the dictionary package is removed, we need to reread dictionary (to use the 72 // next-priority one, or stop using a dictionary at all if this was the only one, 73 // since this is the user request). 74 // If we are replacing the package, we will receive ADDED right away so no need to 75 // remove the dictionary at the moment, since we will do it when we receive the 76 // ADDED broadcast. 77 78 // TODO: Only reload dictionary on REMOVED when the removed package is the one we 79 // read dictionary from? 80 mService.resetSuggestMainDict(); 81 } 82 } 83} 84