1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of 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, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.internal.policy; 18 19 import android.content.AutofillOptions; 20 import android.content.ContentCaptureOptions; 21 import android.content.Context; 22 import android.content.res.AssetManager; 23 import android.content.res.Resources; 24 import android.view.ContextThemeWrapper; 25 import android.view.WindowManager; 26 import android.view.WindowManagerImpl; 27 import android.view.contentcapture.ContentCaptureManager; 28 29 import com.android.internal.annotations.VisibleForTesting; 30 31 import java.lang.ref.WeakReference; 32 33 /** 34 * Context for decor views which can be seeded with pure application context and not depend on the 35 * activity, but still provide some of the facilities that Activity has, 36 * e.g. themes, activity-based resources, etc. 37 * 38 * @hide 39 */ 40 @VisibleForTesting(visibility = VisibleForTesting.Visibility.PACKAGE) 41 public class DecorContext extends ContextThemeWrapper { 42 private PhoneWindow mPhoneWindow; 43 private WindowManager mWindowManager; 44 private Resources mActivityResources; 45 private ContentCaptureManager mContentCaptureManager; 46 47 private WeakReference<Context> mActivityContext; 48 49 @VisibleForTesting DecorContext(Context context, Context activityContext)50 public DecorContext(Context context, Context activityContext) { 51 super(context.createDisplayContext(activityContext.getDisplay()), null); 52 mActivityContext = new WeakReference<>(activityContext); 53 mActivityResources = activityContext.getResources(); 54 } 55 setPhoneWindow(PhoneWindow phoneWindow)56 void setPhoneWindow(PhoneWindow phoneWindow) { 57 mPhoneWindow = phoneWindow; 58 mWindowManager = null; 59 } 60 61 @Override getSystemService(String name)62 public Object getSystemService(String name) { 63 if (Context.WINDOW_SERVICE.equals(name)) { 64 if (mWindowManager == null) { 65 WindowManagerImpl wm = 66 (WindowManagerImpl) super.getSystemService(Context.WINDOW_SERVICE); 67 mWindowManager = wm.createLocalWindowManager(mPhoneWindow); 68 } 69 return mWindowManager; 70 } 71 if (Context.CONTENT_CAPTURE_MANAGER_SERVICE.equals(name)) { 72 if (mContentCaptureManager == null) { 73 Context activityContext = mActivityContext.get(); 74 if (activityContext != null) { 75 mContentCaptureManager = (ContentCaptureManager) activityContext 76 .getSystemService(name); 77 } 78 } 79 return mContentCaptureManager; 80 } 81 return super.getSystemService(name); 82 } 83 84 @Override getResources()85 public Resources getResources() { 86 Context activityContext = mActivityContext.get(); 87 // Attempt to update the local cached Resources from the activity context. If the activity 88 // is no longer around, return the old cached values. 89 if (activityContext != null) { 90 mActivityResources = activityContext.getResources(); 91 } 92 93 return mActivityResources; 94 } 95 96 @Override getAssets()97 public AssetManager getAssets() { 98 return mActivityResources.getAssets(); 99 } 100 101 @Override getAutofillOptions()102 public AutofillOptions getAutofillOptions() { 103 Context activityContext = mActivityContext.get(); 104 if (activityContext != null) { 105 return activityContext.getAutofillOptions(); 106 } 107 return null; 108 } 109 110 @Override getContentCaptureOptions()111 public ContentCaptureOptions getContentCaptureOptions() { 112 Context activityContext = mActivityContext.get(); 113 if (activityContext != null) { 114 return activityContext.getContentCaptureOptions(); 115 } 116 return null; 117 } 118 } 119