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      1 /*
      2  * Copyright (C) 2017 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.enterprise;
     18 
     19 import android.content.Context;
     20 import android.content.pm.PackageManager;
     21 import android.support.v7.preference.Preference;
     22 import android.support.v7.preference.PreferenceScreen;
     23 
     24 import com.android.settings.R;
     25 import com.android.settings.SettingsPreferenceFragment;
     26 import com.android.settings.applications.ApplicationFeatureProvider;
     27 import com.android.settings.applications.UserAppInfo;
     28 import com.android.settings.core.PreferenceControllerMixin;
     29 import com.android.settingslib.core.AbstractPreferenceController;
     30 
     31 import java.util.List;
     32 
     33 /**
     34  * PreferenceController that builds a dynamic list of applications provided by
     35  * {@link ApplicationListBuilder} instance.
     36  */
     37 public class ApplicationListPreferenceController extends AbstractPreferenceController implements
     38         PreferenceControllerMixin, ApplicationFeatureProvider.ListOfAppsCallback {
     39     private final PackageManager mPm;
     40     private SettingsPreferenceFragment mParent;
     41 
     42     public ApplicationListPreferenceController(Context context, ApplicationListBuilder builder,
     43             PackageManager packageManager, SettingsPreferenceFragment parent) {
     44         super(context);
     45         mPm = packageManager;
     46         mParent = parent;
     47         builder.buildApplicationList(context, this);
     48     }
     49 
     50     @Override
     51     public boolean isAvailable() {
     52         return true;
     53     }
     54 
     55     @Override
     56     public String getPreferenceKey() {
     57         return null;
     58     }
     59 
     60     @Override
     61     public void onListOfAppsResult(List<UserAppInfo> result) {
     62         final PreferenceScreen screen = mParent.getPreferenceScreen();
     63         if (screen == null) {
     64             return;
     65         }
     66         final Context prefContext = mParent.getPreferenceManager().getContext();
     67         for (int position = 0; position < result.size(); position++) {
     68             final UserAppInfo item = result.get(position);
     69             final Preference preference = new Preference(prefContext);
     70             preference.setLayoutResource(R.layout.preference_app);
     71             preference.setTitle(item.appInfo.loadLabel(mPm));
     72             preference.setIcon(item.appInfo.loadIcon(mPm));
     73             preference.setOrder(position);
     74             preference.setSelectable(false);
     75             screen.addPreference(preference);
     76         }
     77     }
     78 
     79     /**
     80      * Simple interface for building application list within {
     81      * @link ApplicationListPreferenceController}
     82      */
     83     public interface ApplicationListBuilder {
     84         void buildApplicationList(Context context,
     85                 ApplicationFeatureProvider.ListOfAppsCallback callback);
     86     }
     87 }
     88