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 17package com.android.tv.settings.accessibility; 18 19import android.accessibilityservice.AccessibilityServiceInfo; 20import android.app.Fragment; 21import android.content.ComponentName; 22import android.content.Context; 23import android.content.pm.PackageManager; 24import android.os.Bundle; 25import android.provider.Settings; 26import android.support.annotation.Keep; 27import android.support.v17.preference.LeanbackPreferenceFragment; 28import android.support.v17.preference.LeanbackSettingsFragment; 29import android.support.v7.preference.Preference; 30import android.support.v7.preference.PreferenceScreen; 31import android.text.TextUtils; 32import android.view.accessibility.AccessibilityManager; 33 34import com.android.tv.settings.R; 35import com.android.tv.settings.RadioPreference; 36 37import java.util.List; 38 39/** 40 * Fragment imitating a single-selection list for picking the accessibility shortcut service 41 */ 42@Keep 43public class AccessibilityShortcutServiceFragment extends LeanbackPreferenceFragment implements 44 AccessibilityServiceConfirmationFragment.OnAccessibilityServiceConfirmedListener { 45 private static final String SERVICE_RADIO_GROUP = "service_group"; 46 47 private final Preference.OnPreferenceChangeListener mPreferenceChangeListener = 48 (preference, newValue) -> { 49 final String newCompString = preference.getKey(); 50 final String currentService = 51 AccessibilityShortcutFragment.getCurrentService(getContext()); 52 if ((Boolean) newValue && !TextUtils.equals(newCompString, currentService)) { 53 final ComponentName cn = ComponentName.unflattenFromString(newCompString); 54 final CharSequence label = preference.getTitle(); 55 final Fragment confirmFragment = 56 AccessibilityServiceConfirmationFragment.newInstance(cn, label, true); 57 confirmFragment.setTargetFragment(AccessibilityShortcutServiceFragment.this, 0); 58 59 final Fragment settingsFragment = getCallbackFragment(); 60 if (settingsFragment instanceof LeanbackSettingsFragment) { 61 ((LeanbackSettingsFragment) settingsFragment) 62 .startImmersiveFragment(confirmFragment); 63 } else { 64 throw new IllegalStateException("Not attached to settings fragment??"); 65 } 66 } 67 return false; 68 }; 69 70 @Override 71 public void onCreatePreferences(Bundle savedInstanceState, String rootKey) { 72 setPreferencesFromResource(R.xml.accessibility_shortcut_service, null); 73 74 final PreferenceScreen screen = getPreferenceScreen(); 75 final Context themedContext = getPreferenceManager().getContext(); 76 77 final List<AccessibilityServiceInfo> installedServices = getContext() 78 .getSystemService(AccessibilityManager.class) 79 .getInstalledAccessibilityServiceList(); 80 final PackageManager packageManager = getContext().getPackageManager(); 81 final String currentService = AccessibilityShortcutFragment.getCurrentService(getContext()); 82 for (AccessibilityServiceInfo service : installedServices) { 83 final RadioPreference preference = new RadioPreference(themedContext); 84 preference.setPersistent(false); 85 preference.setRadioGroup(SERVICE_RADIO_GROUP); 86 preference.setOnPreferenceChangeListener(mPreferenceChangeListener); 87 88 final String serviceString = service.getComponentName().flattenToString(); 89 if (TextUtils.equals(currentService, serviceString)) { 90 preference.setChecked(true); 91 } 92 preference.setKey(serviceString); 93 preference.setTitle(service.getResolveInfo().loadLabel(packageManager)); 94 95 screen.addPreference(preference); 96 } 97 } 98 99 @Override 100 public void onAccessibilityServiceConfirmed(ComponentName componentName, boolean enabling) { 101 final String componentString = componentName.flattenToString(); 102 Settings.Secure.putString(getContext().getContentResolver(), 103 Settings.Secure.ACCESSIBILITY_SHORTCUT_TARGET_SERVICE, 104 componentString); 105 getFragmentManager().popBackStack(); 106 } 107} 108