1 /* 2 * Copyright (C) 2016 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.inputmethod; 18 19 import android.content.Context; 20 import android.hardware.input.InputManager; 21 import android.provider.Settings; 22 import android.support.v14.preference.SwitchPreference; 23 import android.support.v7.preference.Preference; 24 import android.support.v7.preference.PreferenceScreen; 25 import android.text.TextUtils; 26 import android.view.InputDevice; 27 28 import com.android.settings.core.PreferenceController; 29 import com.android.settings.core.lifecycle.LifecycleObserver; 30 import com.android.settings.core.lifecycle.events.OnPause; 31 import com.android.settings.core.lifecycle.events.OnResume; 32 33 public class GameControllerPreferenceController extends PreferenceController 34 implements InputManager.InputDeviceListener, LifecycleObserver, OnResume, OnPause { 35 36 public static final String PREF_KEY = "vibrate_input_devices"; 37 private static final String CATEGORY_KEY = "game_controller_settings_category"; 38 39 private final InputManager mIm; 40 41 private PreferenceScreen mScreen; 42 private Preference mCategory; 43 private Preference mPreference; 44 GameControllerPreferenceController(Context context)45 public GameControllerPreferenceController(Context context) { 46 super(context); 47 mIm = (InputManager) context.getSystemService(Context.INPUT_SERVICE); 48 } 49 50 @Override onResume()51 public void onResume() { 52 mIm.registerInputDeviceListener(this, null); 53 } 54 55 @Override onPause()56 public void onPause() { 57 mIm.unregisterInputDeviceListener(this); 58 } 59 60 @Override displayPreference(PreferenceScreen screen)61 public void displayPreference(PreferenceScreen screen) { 62 super.displayPreference(screen); 63 mScreen = screen; 64 mCategory = screen.findPreference(CATEGORY_KEY); 65 mPreference = screen.findPreference(PREF_KEY); 66 } 67 68 @Override isAvailable()69 public boolean isAvailable() { 70 final int[] devices = mIm.getInputDeviceIds(); 71 for (int deviceId : devices) { 72 InputDevice device = mIm.getInputDevice(deviceId); 73 if (device != null && !device.isVirtual() && device.getVibrator().hasVibrator()) { 74 return true; 75 } 76 } 77 return false; 78 } 79 80 @Override handlePreferenceTreeClick(Preference preference)81 public boolean handlePreferenceTreeClick(Preference preference) { 82 if (TextUtils.equals(PREF_KEY, preference.getKey())) { 83 Settings.System.putInt(mContext.getContentResolver(), 84 Settings.System.VIBRATE_INPUT_DEVICES, 85 ((SwitchPreference) preference).isChecked() ? 1 : 0); 86 return true; 87 } 88 return false; 89 } 90 91 @Override getPreferenceKey()92 public String getPreferenceKey() { 93 return CATEGORY_KEY; 94 } 95 96 @Override updateState(Preference preference)97 public void updateState(Preference preference) { 98 if (preference == null) { 99 return; 100 } 101 ((SwitchPreference) preference).setChecked(Settings.System.getInt( 102 mContext.getContentResolver(), 103 Settings.System.VIBRATE_INPUT_DEVICES, 1) > 0); 104 } 105 106 @Override onInputDeviceAdded(int deviceId)107 public void onInputDeviceAdded(int deviceId) { 108 updateGameControllers(); 109 } 110 111 @Override onInputDeviceRemoved(int deviceId)112 public void onInputDeviceRemoved(int deviceId) { 113 updateGameControllers(); 114 } 115 116 @Override onInputDeviceChanged(int deviceId)117 public void onInputDeviceChanged(int deviceId) { 118 updateGameControllers(); 119 } 120 updateGameControllers()121 private void updateGameControllers() { 122 if (isAvailable()) { 123 mScreen.addPreference(mCategory); 124 updateState(mPreference); 125 } else { 126 if (mCategory != null) { 127 mScreen.removePreference(mCategory); 128 } 129 } 130 } 131 } 132