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      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.v7.preference.Preference;
     23 import android.support.v7.preference.PreferenceScreen;
     24 import android.view.InputDevice;
     25 
     26 import com.android.settings.R;
     27 import com.android.settings.core.PreferenceControllerMixin;
     28 import com.android.settings.core.TogglePreferenceController;
     29 import com.android.settingslib.core.lifecycle.LifecycleObserver;
     30 import com.android.settingslib.core.lifecycle.events.OnPause;
     31 import com.android.settingslib.core.lifecycle.events.OnResume;
     32 
     33 public class GameControllerPreferenceController extends TogglePreferenceController
     34         implements PreferenceControllerMixin, InputManager.InputDeviceListener, LifecycleObserver,
     35         OnResume, OnPause {
     36 
     37     private final InputManager mIm;
     38 
     39     private Preference mPreference;
     40 
     41     public GameControllerPreferenceController(Context context, String key) {
     42         super(context, key);
     43         mIm = (InputManager) context.getSystemService(Context.INPUT_SERVICE);
     44     }
     45 
     46     @Override
     47     public void onResume() {
     48         mIm.registerInputDeviceListener(this, null);
     49     }
     50 
     51     @Override
     52     public void onPause() {
     53         mIm.unregisterInputDeviceListener(this);
     54     }
     55 
     56     @Override
     57     public void displayPreference(PreferenceScreen screen) {
     58         super.displayPreference(screen);
     59         mPreference = screen.findPreference(getPreferenceKey());
     60     }
     61 
     62     @Override
     63     @AvailabilityStatus
     64     public int getAvailabilityStatus() {
     65         // If device explicitly wants to hide this, return early.
     66         if (!mContext.getResources().getBoolean(R.bool.config_show_vibrate_input_devices)) {
     67             return UNSUPPORTED_ON_DEVICE;
     68         }
     69 
     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 AVAILABLE;
     75             }
     76         }
     77         return CONDITIONALLY_UNAVAILABLE;
     78     }
     79 
     80     @Override
     81     public void updateState(Preference preference) {
     82         super.updateState(preference);
     83         if (preference == null) {
     84             return;
     85         }
     86         mPreference.setVisible(isAvailable());
     87     }
     88 
     89     @Override
     90     public boolean isChecked() {
     91         return Settings.System.getInt(
     92                 mContext.getContentResolver(),
     93                 Settings.System.VIBRATE_INPUT_DEVICES, 1) > 0;
     94     }
     95 
     96     @Override
     97     public boolean setChecked(boolean isChecked) {
     98         return Settings.System.putInt(mContext.getContentResolver(),
     99                 Settings.System.VIBRATE_INPUT_DEVICES, isChecked ? 1 : 0);
    100     }
    101 
    102     @Override
    103     public void onInputDeviceAdded(int deviceId) {
    104         updateState(mPreference);
    105     }
    106 
    107     @Override
    108     public void onInputDeviceRemoved(int deviceId) {
    109         updateState(mPreference);
    110     }
    111 
    112     @Override
    113     public void onInputDeviceChanged(int deviceId) {
    114         updateState(mPreference);
    115     }
    116 }
    117