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