1 /* 2 * Copyright (C) 2016 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.settings.security; 18 19 import android.content.Context; 20 import android.content.Intent; 21 import android.content.IContentProvider; 22 import android.content.pm.PackageManager; 23 import android.content.res.Resources; 24 import android.graphics.drawable.Drawable; 25 import android.os.Handler; 26 import android.os.Looper; 27 import com.android.settings.R; 28 import com.android.settings.trustagent.TrustAgentManager; 29 import com.android.settings.trustagent.TrustAgentManagerImpl; 30 import com.android.settingslib.drawer.DashboardCategory; 31 import android.support.annotation.VisibleForTesting; 32 import android.support.v4.content.ContextCompat; 33 import android.support.v7.preference.Preference; 34 import android.support.v7.preference.PreferenceScreen; 35 import android.text.TextUtils; 36 import android.util.ArrayMap; 37 import android.util.Pair; 38 39 import com.android.settingslib.drawer.Tile; 40 import com.android.settingslib.drawer.TileUtils; 41 42 import java.util.concurrent.Executors; 43 import java.util.TreeMap; 44 import java.util.Map; 45 46 /** Implementation for {@code SecurityFeatureProvider}. */ 47 public class SecurityFeatureProviderImpl implements SecurityFeatureProvider { 48 49 private TrustAgentManager mTrustAgentManager; 50 51 @VisibleForTesting 52 static final Drawable DEFAULT_ICON = null; 53 54 @VisibleForTesting 55 static Map<String, Pair<String, Integer>> sIconCache = new TreeMap<>(); 56 57 @VisibleForTesting 58 static Map<String, String> sSummaryCache = new TreeMap<>(); 59 60 /** Update preferences with data from associated tiles. */ 61 public void updatePreferences(final Context context, final PreferenceScreen preferenceScreen, 62 final DashboardCategory dashboardCategory) { 63 if (preferenceScreen == null) { 64 return; 65 } 66 int tilesCount = (dashboardCategory != null) ? dashboardCategory.getTilesCount() : 0; 67 if (tilesCount == 0) { 68 return; 69 } 70 71 initPreferences(context, preferenceScreen, dashboardCategory); 72 73 // Fetching the summary and icon from the provider introduces latency, so do this on a 74 // separate thread. 75 Executors.newSingleThreadExecutor().execute(new Runnable() { 76 @Override 77 public void run() { 78 updatePreferencesToRunOnWorkerThread(context, preferenceScreen, dashboardCategory); 79 } 80 }); 81 } 82 83 @VisibleForTesting 84 static void initPreferences(Context context, PreferenceScreen preferenceScreen, 85 DashboardCategory dashboardCategory) { 86 int tilesCount = (dashboardCategory != null) ? dashboardCategory.getTilesCount() : 0; 87 for (int i = 0; i < tilesCount; i++) { 88 Tile tile = dashboardCategory.getTile(i); 89 // If the tile does not have a key or appropriate meta data, skip it. 90 if (TextUtils.isEmpty(tile.key) || (tile.metaData == null)) { 91 continue; 92 } 93 Preference matchingPref = preferenceScreen.findPreference(tile.key); 94 // If the tile does not have a matching preference, skip it. 95 if (matchingPref == null) { 96 continue; 97 } 98 // Either remove an icon by replacing them with nothing, or use the cached one since 99 // there is a delay in fetching the injected icon, and we don't want an inappropriate 100 // icon to be displayed while waiting for the injected icon. 101 final String iconUri = 102 tile.metaData.getString(TileUtils.META_DATA_PREFERENCE_ICON_URI, null); 103 Drawable drawable = DEFAULT_ICON; 104 if ((iconUri != null) && sIconCache.containsKey(iconUri)) { 105 Pair<String, Integer> icon = sIconCache.get(iconUri); 106 try { 107 drawable = context.getPackageManager() 108 .getResourcesForApplication(icon.first /* package name */) 109 .getDrawable(icon.second /* res id */, 110 context.getTheme()); 111 } catch (PackageManager.NameNotFoundException e) { 112 // Ignore and just load the default icon. 113 } 114 } 115 matchingPref.setIcon(drawable); 116 // Either reserve room for the summary or load the cached one. This prevents the title 117 // from shifting when the final summary is injected. 118 final String summaryUri = 119 tile.metaData.getString(TileUtils.META_DATA_PREFERENCE_SUMMARY_URI, null); 120 String summary = context.getString(R.string.summary_placeholder); 121 if ((summaryUri != null) && sSummaryCache.containsKey(summaryUri)) { 122 summary = sSummaryCache.get(summaryUri); 123 } 124 matchingPref.setSummary(summary); 125 } 126 } 127 128 @VisibleForTesting 129 void updatePreferencesToRunOnWorkerThread(Context context, PreferenceScreen preferenceScreen, 130 DashboardCategory dashboardCategory) { 131 132 int tilesCount = (dashboardCategory != null) ? dashboardCategory.getTilesCount() : 0; 133 Map<String, IContentProvider> providerMap = new ArrayMap<>(); 134 for (int i = 0; i < tilesCount; i++) { 135 Tile tile = dashboardCategory.getTile(i); 136 // If the tile does not have a key or appropriate meta data, skip it. 137 if (TextUtils.isEmpty(tile.key) || (tile.metaData == null)) { 138 continue; 139 } 140 Preference matchingPref = preferenceScreen.findPreference(tile.key); 141 // If the tile does not have a matching preference, skip it. 142 if (matchingPref == null) { 143 continue; 144 } 145 // Check if the tile has content providers for dynamically updatable content. 146 final String iconUri = 147 tile.metaData.getString(TileUtils.META_DATA_PREFERENCE_ICON_URI, null); 148 final String summaryUri = 149 tile.metaData.getString(TileUtils.META_DATA_PREFERENCE_SUMMARY_URI, null); 150 if (!TextUtils.isEmpty(iconUri)) { 151 String packageName = null; 152 if (tile.intent != null) { 153 Intent intent = tile.intent; 154 if (!TextUtils.isEmpty(intent.getPackage())) { 155 packageName = intent.getPackage(); 156 } else if (intent.getComponent() != null) { 157 packageName = intent.getComponent().getPackageName(); 158 } 159 } 160 Pair<String, Integer> icon = 161 TileUtils.getIconFromUri(context, packageName, iconUri, providerMap); 162 if (icon != null) { 163 sIconCache.put(iconUri, icon); 164 // Icon is only returned if the icon belongs to Settings or the target app. 165 // setIcon must be called on the UI thread. 166 new Handler(Looper.getMainLooper()).post(new Runnable() { 167 @Override 168 public void run() { 169 try { 170 matchingPref.setIcon(context.getPackageManager() 171 .getResourcesForApplication(icon.first /* package name */) 172 .getDrawable(icon.second /* res id */, 173 context.getTheme())); 174 } catch (PackageManager.NameNotFoundException 175 | Resources.NotFoundException e) { 176 // Intentionally ignored. If icon resources cannot be found, do not 177 // update. 178 } 179 } 180 }); 181 } 182 } 183 if (!TextUtils.isEmpty(summaryUri)) { 184 String summary = TileUtils.getTextFromUri(context, summaryUri, providerMap, 185 TileUtils.META_DATA_PREFERENCE_SUMMARY); 186 sSummaryCache.put(summaryUri, summary); 187 // setSummary must be called on UI thread. 188 new Handler(Looper.getMainLooper()).post(new Runnable() { 189 @Override 190 public void run() { 191 // Only update the summary if it has actually changed. 192 if (summary == null) { 193 if (matchingPref.getSummary() != null) { 194 matchingPref.setSummary(summary); 195 } 196 } else if (!summary.equals(matchingPref.getSummary())) { 197 matchingPref.setSummary(summary); 198 } 199 } 200 }); 201 } 202 } 203 } 204 205 @Override 206 public TrustAgentManager getTrustAgentManager() { 207 if (mTrustAgentManager == null) { 208 mTrustAgentManager = new TrustAgentManagerImpl(); 209 } 210 return mTrustAgentManager; 211 } 212 } 213
