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.inputmethod; 18 19 import android.app.admin.DevicePolicyManager; 20 import android.content.Context; 21 import android.graphics.drawable.Drawable; 22 import android.view.inputmethod.InputMethodInfo; 23 import android.view.inputmethod.InputMethodManager; 24 25 import androidx.preference.Preference; 26 import androidx.preference.PreferenceScreen; 27 28 import com.android.settings.core.BasePreferenceController; 29 import com.android.settingslib.core.lifecycle.LifecycleObserver; 30 import com.android.settingslib.core.lifecycle.events.OnStart; 31 import com.android.settingslib.inputmethod.InputMethodPreference; 32 33 import com.google.common.annotations.VisibleForTesting; 34 35 import java.text.Collator; 36 import java.util.ArrayList; 37 import java.util.List; 38 39 public class InputMethodPreferenceController extends BasePreferenceController implements 40 LifecycleObserver, OnStart { 41 42 @VisibleForTesting 43 PreferenceScreen mScreen; 44 private Preference mPreference; 45 private InputMethodManager mImm; 46 private DevicePolicyManager mDpm; 47 InputMethodPreferenceController(Context context, String key)48 public InputMethodPreferenceController(Context context, String key) { 49 super(context, key); 50 mImm = context.getSystemService(InputMethodManager.class); 51 mDpm = context.getSystemService(DevicePolicyManager.class); 52 } 53 54 @Override getAvailabilityStatus()55 public int getAvailabilityStatus() { 56 return AVAILABLE; 57 } 58 59 @Override displayPreference(PreferenceScreen screen)60 public void displayPreference(PreferenceScreen screen) { 61 super.displayPreference(screen); 62 mScreen = screen; 63 mPreference = mScreen.findPreference(getPreferenceKey()); 64 } 65 66 @Override onStart()67 public void onStart() { 68 updateInputMethodPreferenceViews(); 69 } 70 updateInputMethodPreferenceViews()71 private void updateInputMethodPreferenceViews() { 72 final List<InputMethodPreference> preferenceList = new ArrayList<>(); 73 74 final List<String> permittedList = mDpm.getPermittedInputMethodsForCurrentUser(); 75 final List<InputMethodInfo> imis = mImm.getEnabledInputMethodList(); 76 final int N = (imis == null ? 0 : imis.size()); 77 for (int i = 0; i < N; ++i) { 78 final InputMethodInfo imi = imis.get(i); 79 final boolean isAllowedByOrganization = permittedList == null 80 || permittedList.contains(imi.getPackageName()); 81 final Drawable icon = imi.loadIcon(mContext.getPackageManager()); 82 final InputMethodPreference pref = new InputMethodPreference( 83 mScreen.getContext(), 84 imi, 85 false, /* isImeEnabler */ 86 isAllowedByOrganization, 87 null /* this can be null since isImeEnabler is false */); 88 pref.setIcon(icon); 89 preferenceList.add(pref); 90 } 91 final Collator collator = Collator.getInstance(); 92 preferenceList.sort((lhs, rhs) -> lhs.compareTo(rhs, collator)); 93 mScreen.removeAll(); 94 for (int i = 0; i < N; ++i) { 95 final InputMethodPreference pref = preferenceList.get(i); 96 pref.setOrder(i); 97 mScreen.addPreference(pref); 98 pref.updatePreferenceViews(); 99 } 100 mScreen.addPreference(mPreference); 101 } 102 } 103