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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.tv.settings.accessibility;
     18 
     19 import android.accessibilityservice.AccessibilityServiceInfo;
     20 import android.content.ComponentName;
     21 import android.content.Context;
     22 import android.content.pm.PackageManager;
     23 import android.os.Bundle;
     24 import android.os.UserHandle;
     25 import android.provider.Settings;
     26 import android.support.annotation.Keep;
     27 import android.support.v17.preference.LeanbackPreferenceFragment;
     28 import android.support.v7.preference.Preference;
     29 import android.support.v7.preference.TwoStatePreference;
     30 import android.text.TextUtils;
     31 import android.view.accessibility.AccessibilityManager;
     32 
     33 import com.android.settingslib.accessibility.AccessibilityUtils;
     34 import com.android.tv.settings.R;
     35 
     36 import java.util.List;
     37 
     38 /**
     39  * Fragment for configuring the accessibility shortcut
     40  */
     41 @Keep
     42 public class AccessibilityShortcutFragment extends LeanbackPreferenceFragment {
     43     private static final String KEY_ENABLE = "enable";
     44     private static final String KEY_SERVICE = "service";
     45 
     46     @Override
     47     public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
     48         setPreferencesFromResource(R.xml.accessibility_shortcut, null);
     49 
     50         final TwoStatePreference enablePref = (TwoStatePreference) findPreference(KEY_ENABLE);
     51         enablePref.setOnPreferenceChangeListener((preference, newValue) -> {
     52             setAccessibilityShortcutEnabled((Boolean) newValue);
     53             return true;
     54         });
     55 
     56         boolean shortcutEnabled = Settings.Secure.getInt(getContext().getContentResolver(),
     57                 Settings.Secure.ACCESSIBILITY_SHORTCUT_ENABLED, 1) == 1;
     58 
     59         enablePref.setChecked(shortcutEnabled);
     60     }
     61 
     62     @Override
     63     public void onResume() {
     64         super.onResume();
     65         final Preference servicePref = findPreference(KEY_SERVICE);
     66         final List<AccessibilityServiceInfo> installedServices = getContext()
     67                 .getSystemService(AccessibilityManager.class)
     68                 .getInstalledAccessibilityServiceList();
     69         final PackageManager packageManager = getContext().getPackageManager();
     70         final String currentService = getCurrentService(getContext());
     71         for (AccessibilityServiceInfo service : installedServices) {
     72             final String serviceString = service.getComponentName().flattenToString();
     73             if (TextUtils.equals(currentService, serviceString)) {
     74                 servicePref.setSummary(service.getResolveInfo().loadLabel(packageManager));
     75             }
     76         }
     77     }
     78 
     79     private void setAccessibilityShortcutEnabled(boolean enabled) {
     80         Settings.Secure.putInt(getContext().getContentResolver(),
     81                 Settings.Secure.ACCESSIBILITY_SHORTCUT_ENABLED, enabled ? 1 : 0);
     82         final Preference servicePref = findPreference(KEY_SERVICE);
     83         servicePref.setEnabled(enabled);
     84     }
     85 
     86     static String getCurrentService(Context context) {
     87         String shortcutServiceString = AccessibilityUtils
     88                 .getShortcutTargetServiceComponentNameString(context, UserHandle.myUserId());
     89         if (shortcutServiceString != null) {
     90             ComponentName shortcutName = ComponentName.unflattenFromString(shortcutServiceString);
     91             if (shortcutName != null) {
     92                 return shortcutName.flattenToString();
     93             }
     94         }
     95         return null;
     96     }
     97 }
     98