1 /* 2 * Copyright (C) 2019 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.privacy; 18 19 import android.accessibilityservice.AccessibilityServiceInfo; 20 import android.content.Context; 21 import android.view.accessibility.AccessibilityManager; 22 23 import androidx.annotation.NonNull; 24 import androidx.preference.Preference; 25 26 import com.android.settings.R; 27 import com.android.settings.core.BasePreferenceController; 28 29 import java.util.List; 30 31 32 public class AccessibilityUsagePreferenceController extends BasePreferenceController { 33 34 private final AccessibilityManager mAccessibilityManager; 35 @NonNull 36 private List<AccessibilityServiceInfo> mEnabledServiceInfos; 37 AccessibilityUsagePreferenceController(Context context, String preferenceKey)38 public AccessibilityUsagePreferenceController(Context context, String preferenceKey) { 39 super(context, preferenceKey); 40 mAccessibilityManager = mContext.getSystemService(AccessibilityManager.class); 41 mEnabledServiceInfos = mAccessibilityManager.getEnabledAccessibilityServiceList( 42 AccessibilityServiceInfo.FEEDBACK_ALL_MASK); 43 } 44 45 @Override updateState(Preference preference)46 public void updateState(Preference preference) { 47 super.updateState(preference); 48 mEnabledServiceInfos = mAccessibilityManager.getEnabledAccessibilityServiceList( 49 AccessibilityServiceInfo.FEEDBACK_ALL_MASK); 50 51 if (mEnabledServiceInfos.isEmpty()) { 52 preference.setVisible(false); 53 } 54 } 55 56 @Override getAvailabilityStatus()57 public int getAvailabilityStatus() { 58 return mEnabledServiceInfos.isEmpty() ? UNSUPPORTED_ON_DEVICE : AVAILABLE; 59 } 60 61 @Override getSummary()62 public CharSequence getSummary() { 63 return mContext.getResources().getQuantityString(R.plurals.accessibility_usage_summary, 64 mEnabledServiceInfos.size(), mEnabledServiceInfos.size()); 65 } 66 } 67