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.development; 18 19 import android.content.Context; 20 import android.provider.Settings; 21 import android.support.annotation.VisibleForTesting; 22 import android.support.v14.preference.SwitchPreference; 23 import android.support.v7.preference.Preference; 24 25 import com.android.settings.core.PreferenceControllerMixin; 26 import com.android.settingslib.development.DeveloperOptionsPreferenceController; 27 28 public class ShowTapsPreferenceController extends DeveloperOptionsPreferenceController implements 29 Preference.OnPreferenceChangeListener, PreferenceControllerMixin { 30 31 private static final String SHOW_TOUCHES_KEY = "show_touches"; 32 33 @VisibleForTesting 34 static final int SETTING_VALUE_ON = 1; 35 @VisibleForTesting 36 static final int SETTING_VALUE_OFF = 0; 37 ShowTapsPreferenceController(Context context)38 public ShowTapsPreferenceController(Context context) { 39 super(context); 40 } 41 42 @Override getPreferenceKey()43 public String getPreferenceKey() { 44 return SHOW_TOUCHES_KEY; 45 } 46 47 @Override onPreferenceChange(Preference preference, Object newValue)48 public boolean onPreferenceChange(Preference preference, Object newValue) { 49 final boolean isEnabled = (Boolean) newValue; 50 Settings.System.putInt(mContext.getContentResolver(), 51 Settings.System.SHOW_TOUCHES, isEnabled ? SETTING_VALUE_ON : SETTING_VALUE_OFF); 52 return true; 53 } 54 55 @Override updateState(Preference preference)56 public void updateState(Preference preference) { 57 int showTapsMode = Settings.System.getInt(mContext.getContentResolver(), 58 Settings.System.SHOW_TOUCHES, SETTING_VALUE_OFF); 59 ((SwitchPreference) mPreference).setChecked(showTapsMode != SETTING_VALUE_OFF); 60 } 61 62 @Override onDeveloperOptionsSwitchDisabled()63 protected void onDeveloperOptionsSwitchDisabled() { 64 super.onDeveloperOptionsSwitchDisabled(); 65 Settings.System.putInt(mContext.getContentResolver(), Settings.System.SHOW_TOUCHES, 66 SETTING_VALUE_OFF); 67 ((SwitchPreference) mPreference).setChecked(false); 68 } 69 } 70