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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.applications.defaultapps;
     18 
     19 import static com.android.settingslib.TwoTargetPreference.ICON_SIZE_MEDIUM;
     20 
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.graphics.drawable.Drawable;
     24 import android.os.UserHandle;
     25 import android.os.UserManager;
     26 import android.support.v7.preference.Preference;
     27 import android.text.TextUtils;
     28 import android.util.Log;
     29 
     30 import com.android.settings.R;
     31 import com.android.settings.Utils;
     32 import com.android.settings.core.PreferenceControllerMixin;
     33 import com.android.settings.widget.GearPreference;
     34 import com.android.settingslib.TwoTargetPreference;
     35 import com.android.settingslib.applications.DefaultAppInfo;
     36 import com.android.settingslib.core.AbstractPreferenceController;
     37 import com.android.settingslib.wrapper.PackageManagerWrapper;
     38 
     39 public abstract class DefaultAppPreferenceController extends AbstractPreferenceController
     40         implements PreferenceControllerMixin {
     41 
     42     private static final String TAG = "DefaultAppPrefControl";
     43 
     44     protected final PackageManagerWrapper mPackageManager;
     45     protected final UserManager mUserManager;
     46 
     47     protected int mUserId;
     48 
     49     public DefaultAppPreferenceController(Context context) {
     50         super(context);
     51         mPackageManager = new PackageManagerWrapper(context.getPackageManager());
     52         mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
     53         mUserId = UserHandle.myUserId();
     54     }
     55 
     56     @Override
     57     public void updateState(Preference preference) {
     58         final DefaultAppInfo app = getDefaultAppInfo();
     59         CharSequence defaultAppLabel = getDefaultAppLabel();
     60         if (preference instanceof TwoTargetPreference) {
     61             // For use small icon because we are displaying an app preference.
     62             // We only need to do this for TwoTargetPreference because the other prefs are
     63             // already using AppPreference so their icon is already normalized.
     64             ((TwoTargetPreference) preference).setIconSize(ICON_SIZE_MEDIUM);
     65         }
     66         if (!TextUtils.isEmpty(defaultAppLabel)) {
     67             preference.setSummary(defaultAppLabel);
     68             Utils.setSafeIcon(preference, getDefaultAppIcon());
     69         } else {
     70             Log.d(TAG, "No default app");
     71             preference.setSummary(R.string.app_list_preference_none);
     72             preference.setIcon(null);
     73         }
     74         mayUpdateGearIcon(app, preference);
     75     }
     76 
     77     private void mayUpdateGearIcon(DefaultAppInfo app, Preference preference) {
     78         if (!(preference instanceof GearPreference)) {
     79             return;
     80         }
     81         final Intent settingIntent = getSettingIntent(app);
     82         if (settingIntent != null) {
     83             ((GearPreference) preference).setOnGearClickListener(
     84                     p -> mContext.startActivity(settingIntent));
     85         } else {
     86             ((GearPreference) preference).setOnGearClickListener(null);
     87         }
     88     }
     89 
     90     protected abstract DefaultAppInfo getDefaultAppInfo();
     91 
     92     /**
     93      * Returns an optional intent that will be launched when clicking "gear" icon.
     94      */
     95     protected Intent getSettingIntent(DefaultAppInfo info) {
     96         //By default return null. It's up to subclasses to provide logic.
     97         return null;
     98     }
     99 
    100     public Drawable getDefaultAppIcon() {
    101         if (!isAvailable()) {
    102             return null;
    103         }
    104         final DefaultAppInfo app = getDefaultAppInfo();
    105         if (app != null) {
    106             return app.loadIcon();
    107         }
    108         return null;
    109     }
    110 
    111     public CharSequence getDefaultAppLabel() {
    112         if (!isAvailable()) {
    113             return null;
    114         }
    115         final DefaultAppInfo app = getDefaultAppInfo();
    116         if (app != null) {
    117             return app.loadLabel();
    118         }
    119         return null;
    120     }
    121 }
    122