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.inputmethod; 18 19 import android.content.Context; 20 import android.hardware.input.InputManager; 21 import android.icu.text.ListFormatter; 22 23 import androidx.preference.Preference; 24 25 import com.android.settings.R; 26 import com.android.settings.core.PreferenceControllerMixin; 27 import com.android.settings.inputmethod.PhysicalKeyboardFragment.HardKeyboardDeviceInfo; 28 import com.android.settingslib.core.AbstractPreferenceController; 29 import com.android.settingslib.core.lifecycle.Lifecycle; 30 import com.android.settingslib.core.lifecycle.LifecycleObserver; 31 import com.android.settingslib.core.lifecycle.events.OnPause; 32 import com.android.settingslib.core.lifecycle.events.OnResume; 33 34 import java.util.ArrayList; 35 import java.util.List; 36 37 38 public class PhysicalKeyboardPreferenceController extends AbstractPreferenceController 39 implements PreferenceControllerMixin, LifecycleObserver, OnResume, OnPause, 40 InputManager.InputDeviceListener { 41 42 private final InputManager mIm; 43 44 private Preference mPreference; 45 PhysicalKeyboardPreferenceController(Context context, Lifecycle lifecycle)46 public PhysicalKeyboardPreferenceController(Context context, Lifecycle lifecycle) { 47 super(context); 48 mIm = (InputManager) context.getSystemService(Context.INPUT_SERVICE); 49 50 if (lifecycle != null) { 51 lifecycle.addObserver(this); 52 } 53 } 54 55 @Override isAvailable()56 public boolean isAvailable() { 57 return mContext.getResources().getBoolean(R.bool.config_show_physical_keyboard_pref); 58 } 59 60 @Override updateState(Preference preference)61 public void updateState(Preference preference) { 62 mPreference = preference; 63 updateSummary(); 64 } 65 66 @Override getPreferenceKey()67 public String getPreferenceKey() { 68 return "physical_keyboard_pref"; 69 } 70 71 @Override onPause()72 public void onPause() { 73 mIm.unregisterInputDeviceListener(this); 74 } 75 76 @Override onResume()77 public void onResume() { 78 mIm.registerInputDeviceListener(this, null); 79 } 80 81 @Override onInputDeviceAdded(int deviceId)82 public void onInputDeviceAdded(int deviceId) { 83 updateSummary(); 84 } 85 86 @Override onInputDeviceRemoved(int deviceId)87 public void onInputDeviceRemoved(int deviceId) { 88 updateSummary(); 89 } 90 91 @Override onInputDeviceChanged(int deviceId)92 public void onInputDeviceChanged(int deviceId) { 93 updateSummary(); 94 } 95 updateSummary()96 private void updateSummary() { 97 if (mPreference == null) { 98 return; 99 } 100 final List<HardKeyboardDeviceInfo> keyboards = 101 PhysicalKeyboardFragment.getHardKeyboards(mContext); 102 if (keyboards.isEmpty()) { 103 mPreference.setSummary(R.string.keyboard_disconnected); 104 return; 105 } 106 final List<String> summaries = new ArrayList<>(); 107 for (HardKeyboardDeviceInfo info : keyboards) { 108 summaries.add(info.mDeviceName); 109 } 110 mPreference.setSummary(ListFormatter.getInstance().format(summaries)); 111 } 112 } 113