| /* |
| * Copyright (C) 2014 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.systemui.statusbar.policy; |
| |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.util.Log; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| |
| import com.android.internal.widget.LockPatternUtils; |
| import com.android.systemui.statusbar.phone.KeyguardPreviewContainer; |
| |
| import java.util.List; |
| |
| /** |
| * Utility class to inflate previews for phone and camera affordance. |
| */ |
| public class PreviewInflater { |
| |
| private static final String TAG = "PreviewInflater"; |
| |
| private static final String META_DATA_KEYGUARD_LAYOUT = "com.android.keyguard.layout"; |
| |
| private Context mContext; |
| private LockPatternUtils mLockPatternUtils; |
| |
| public PreviewInflater(Context context, LockPatternUtils lockPatternUtils) { |
| mContext = context; |
| mLockPatternUtils = lockPatternUtils; |
| } |
| |
| public View inflatePreview(Intent intent) { |
| WidgetInfo info = getWidgetInfo(intent); |
| if (info == null) { |
| return null; |
| } |
| View v = inflateWidgetView(info); |
| if (v == null) { |
| return null; |
| } |
| KeyguardPreviewContainer container = new KeyguardPreviewContainer(mContext, null); |
| container.addView(v); |
| return container; |
| } |
| |
| private View inflateWidgetView(WidgetInfo widgetInfo) { |
| View widgetView = null; |
| try { |
| Context appContext = mContext.createPackageContext( |
| widgetInfo.contextPackage, Context.CONTEXT_RESTRICTED); |
| LayoutInflater appInflater = (LayoutInflater) |
| appContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| appInflater = appInflater.cloneInContext(appContext); |
| widgetView = appInflater.inflate(widgetInfo.layoutId, null, false); |
| } catch (PackageManager.NameNotFoundException|RuntimeException e) { |
| Log.w(TAG, "Error creating widget view", e); |
| } |
| return widgetView; |
| } |
| |
| private WidgetInfo getWidgetInfo(Intent intent) { |
| WidgetInfo info = new WidgetInfo(); |
| PackageManager packageManager = mContext.getPackageManager(); |
| final List<ResolveInfo> appList = packageManager.queryIntentActivitiesAsUser( |
| intent, PackageManager.MATCH_DEFAULT_ONLY, mLockPatternUtils.getCurrentUser()); |
| if (appList.size() == 0) { |
| return null; |
| } |
| ResolveInfo resolved = packageManager.resolveActivityAsUser(intent, |
| PackageManager.MATCH_DEFAULT_ONLY | PackageManager.GET_META_DATA, |
| mLockPatternUtils.getCurrentUser()); |
| if (wouldLaunchResolverActivity(resolved, appList)) { |
| return null; |
| } |
| if (resolved == null || resolved.activityInfo == null) { |
| return null; |
| } |
| if (resolved.activityInfo.metaData == null || resolved.activityInfo.metaData.isEmpty()) { |
| return null; |
| } |
| int layoutId = resolved.activityInfo.metaData.getInt(META_DATA_KEYGUARD_LAYOUT); |
| if (layoutId == 0) { |
| return null; |
| } |
| info.contextPackage = resolved.activityInfo.packageName; |
| info.layoutId = layoutId; |
| return info; |
| } |
| |
| public static boolean wouldLaunchResolverActivity(Context ctx, Intent intent, |
| int currentUserId) { |
| PackageManager packageManager = ctx.getPackageManager(); |
| final List<ResolveInfo> appList = packageManager.queryIntentActivitiesAsUser( |
| intent, PackageManager.MATCH_DEFAULT_ONLY, currentUserId); |
| if (appList.size() == 0) { |
| return false; |
| } |
| ResolveInfo resolved = packageManager.resolveActivityAsUser(intent, |
| PackageManager.MATCH_DEFAULT_ONLY | PackageManager.GET_META_DATA, currentUserId); |
| return wouldLaunchResolverActivity(resolved, appList); |
| } |
| |
| private static boolean wouldLaunchResolverActivity( |
| ResolveInfo resolved, List<ResolveInfo> appList) { |
| // If the list contains the above resolved activity, then it can't be |
| // ResolverActivity itself. |
| for (int i = 0; i < appList.size(); i++) { |
| ResolveInfo tmp = appList.get(i); |
| if (tmp.activityInfo.name.equals(resolved.activityInfo.name) |
| && tmp.activityInfo.packageName.equals(resolved.activityInfo.packageName)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private static class WidgetInfo { |
| String contextPackage; |
| int layoutId; |
| } |
| } |