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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.appinfo;
     18 
     19 import android.content.Context;
     20 import android.content.pm.ApplicationInfo;
     21 import android.content.pm.PackageInfo;
     22 import android.content.pm.PackageManager;
     23 import android.hardware.usb.IUsbManager;
     24 import android.os.ServiceManager;
     25 import android.support.v7.preference.Preference;
     26 import android.support.v7.preference.PreferenceScreen;
     27 
     28 import com.android.settings.SettingsPreferenceFragment;
     29 import com.android.settings.applications.AppLaunchSettings;
     30 import com.android.settingslib.applications.AppUtils;
     31 import com.android.settingslib.applications.ApplicationsState;
     32 
     33 public class AppOpenByDefaultPreferenceController extends AppInfoPreferenceControllerBase {
     34 
     35     private IUsbManager mUsbManager;
     36     private PackageManager mPackageManager;
     37 
     38     public AppOpenByDefaultPreferenceController(Context context, String key) {
     39         super(context, key);
     40         mUsbManager = IUsbManager.Stub.asInterface(ServiceManager.getService(Context.USB_SERVICE));
     41         mPackageManager = context.getPackageManager();
     42     }
     43 
     44     @Override
     45     public void displayPreference(PreferenceScreen screen) {
     46         super.displayPreference(screen);
     47         final ApplicationsState.AppEntry appEntry = mParent.getAppEntry();
     48         if (appEntry == null || appEntry.info == null) {
     49             mPreference.setEnabled(false);
     50         } else if ((appEntry.info.flags & ApplicationInfo.FLAG_INSTALLED) == 0
     51                 || !appEntry.info.enabled) {
     52             mPreference.setEnabled(false);
     53         }
     54     }
     55 
     56     @Override
     57     public void updateState(Preference preference) {
     58         final PackageInfo packageInfo = mParent.getPackageInfo();
     59         if (packageInfo != null && !AppUtils.isInstant(packageInfo.applicationInfo)) {
     60             preference.setVisible(true);
     61             preference.setSummary(AppUtils.getLaunchByDefaultSummary(mParent.getAppEntry(),
     62                     mUsbManager, mPackageManager, mContext));
     63         } else {
     64             preference.setVisible(false);
     65         }
     66     }
     67 
     68     @Override
     69     protected Class<? extends SettingsPreferenceFragment> getDetailFragmentClass() {
     70         return AppLaunchSettings.class;
     71     }
     72 
     73 }
     74