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/*
* Copyright (C) 2016 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.settings.security;
import android.content.Context;
import android.content.Intent;
import android.content.IContentProvider;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Looper;
import com.android.settings.trustagent.TrustAgentManager;
import com.android.settings.trustagent.TrustAgentManagerImpl;
import com.android.settingslib.drawer.DashboardCategory;
import android.support.annotation.VisibleForTesting;
import android.support.v4.content.ContextCompat;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.text.TextUtils;
import android.util.ArrayMap;
import android.util.Pair;
import com.android.settingslib.drawer.Tile;
import com.android.settingslib.drawer.TileUtils;
import java.util.concurrent.Executors;
import java.util.TreeMap;
import java.util.Map;
/** Implementation for {@code SecurityFeatureProvider}. */
public class SecurityFeatureProviderImpl implements SecurityFeatureProvider {
private TrustAgentManager mTrustAgentManager;
@VisibleForTesting
static final Drawable DEFAULT_ICON = null;
@VisibleForTesting
static final String DEFAULT_SUMMARY = " ";
@VisibleForTesting
static Map<String, Pair<String, Integer>> sIconCache = new TreeMap<>();
@VisibleForTesting
static Map<String, String> sSummaryCache = new TreeMap<>();
/** Update preferences with data from associated tiles. */
public void updatePreferences(final Context context, final PreferenceScreen preferenceScreen,
final DashboardCategory dashboardCategory) {
if (preferenceScreen == null) {
return;
}
int tilesCount = (dashboardCategory != null) ? dashboardCategory.getTilesCount() : 0;
if (tilesCount == 0) {
return;
}
initPreferences(context, preferenceScreen, dashboardCategory);
// Fetching the summary and icon from the provider introduces latency, so do this on a
// separate thread.
Executors.newSingleThreadExecutor().execute(new Runnable() {
@Override
public void run() {
updatePreferencesToRunOnWorkerThread(context, preferenceScreen, dashboardCategory);
}
});
}
@VisibleForTesting
static void initPreferences(Context context, PreferenceScreen preferenceScreen,
DashboardCategory dashboardCategory) {
int tilesCount = (dashboardCategory != null) ? dashboardCategory.getTilesCount() : 0;
for (int i = 0; i < tilesCount; i++) {
Tile tile = dashboardCategory.getTile(i);
// If the tile does not have a key or appropriate meta data, skip it.
if (TextUtils.isEmpty(tile.key) || (tile.metaData == null)) {
continue;
}
Preference matchingPref = preferenceScreen.findPreference(tile.key);
// If the tile does not have a matching preference, skip it.
if (matchingPref == null) {
continue;
}
// Either remove an icon by replacing them with nothing, or use the cached one since
// there is a delay in fetching the injected icon, and we don't want an inappropriate
// icon to be displayed while waiting for the injected icon.
final String iconUri =
tile.metaData.getString(TileUtils.META_DATA_PREFERENCE_ICON_URI, null);
Drawable drawable = DEFAULT_ICON;
if ((iconUri != null) && sIconCache.containsKey(iconUri)) {
Pair<String, Integer> icon = sIconCache.get(iconUri);
try {
drawable = context.getPackageManager()
.getResourcesForApplication(icon.first /* package name */)
.getDrawable(icon.second /* res id */,
context.getTheme());
} catch (PackageManager.NameNotFoundException e) {
// Ignore and just load the default icon.
}
}
matchingPref.setIcon(drawable);
// Either reserve room for the summary or load the cached one. This prevents the title
// from shifting when the final summary is injected.
final String summaryUri =
tile.metaData.getString(TileUtils.META_DATA_PREFERENCE_SUMMARY_URI, null);
String summary = DEFAULT_SUMMARY;
if ((summaryUri != null) && sSummaryCache.containsKey(summaryUri)) {
summary = sSummaryCache.get(summaryUri);
}
matchingPref.setSummary(summary);
}
}
@VisibleForTesting
void updatePreferencesToRunOnWorkerThread(Context context, PreferenceScreen preferenceScreen,
DashboardCategory dashboardCategory) {
int tilesCount = (dashboardCategory != null) ? dashboardCategory.getTilesCount() : 0;
Map<String, IContentProvider> providerMap = new ArrayMap<>();
for (int i = 0; i < tilesCount; i++) {
Tile tile = dashboardCategory.getTile(i);
// If the tile does not have a key or appropriate meta data, skip it.
if (TextUtils.isEmpty(tile.key) || (tile.metaData == null)) {
continue;
}
Preference matchingPref = preferenceScreen.findPreference(tile.key);
// If the tile does not have a matching preference, skip it.
if (matchingPref == null) {
continue;
}
// Check if the tile has content providers for dynamically updatable content.
final String iconUri =
tile.metaData.getString(TileUtils.META_DATA_PREFERENCE_ICON_URI, null);
final String summaryUri =
tile.metaData.getString(TileUtils.META_DATA_PREFERENCE_SUMMARY_URI, null);
if (!TextUtils.isEmpty(iconUri)) {
String packageName = null;
if (tile.intent != null) {
Intent intent = tile.intent;
if (!TextUtils.isEmpty(intent.getPackage())) {
packageName = intent.getPackage();
} else if (intent.getComponent() != null) {
packageName = intent.getComponent().getPackageName();
}
}
Pair<String, Integer> icon =
TileUtils.getIconFromUri(context, packageName, iconUri, providerMap);
if (icon != null) {
sIconCache.put(iconUri, icon);
// Icon is only returned if the icon belongs to Settings or the target app.
// setIcon must be called on the UI thread.
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
try {
matchingPref.setIcon(context.getPackageManager()
.getResourcesForApplication(icon.first /* package name */)
.getDrawable(icon.second /* res id */,
context.getTheme()));
} catch (PackageManager.NameNotFoundException
| Resources.NotFoundException e) {
// Intentionally ignored. If icon resources cannot be found, do not
// update.
}
}
});
}
}
if (!TextUtils.isEmpty(summaryUri)) {
String summary = TileUtils.getTextFromUri(context, summaryUri, providerMap,
TileUtils.META_DATA_PREFERENCE_SUMMARY);
sSummaryCache.put(summaryUri, summary);
// setSummary must be called on UI thread.
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
// Only update the summary if it has actually changed.
if (summary == null) {
if (matchingPref.getSummary() != null) {
matchingPref.setSummary(summary);
}
} else if (!summary.equals(matchingPref.getSummary())) {
matchingPref.setSummary(summary);
}
}
});
}
}
}
@Override
public TrustAgentManager getTrustAgentManager() {
if (mTrustAgentManager == null) {
mTrustAgentManager = new TrustAgentManagerImpl();
}
return mTrustAgentManager;
}
}