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.app.Activity; 20 import android.app.admin.DevicePolicyManager; 21 import android.content.Context; 22 import android.graphics.Color; 23 import android.graphics.drawable.ColorDrawable; 24 import android.graphics.drawable.Drawable; 25 import android.os.Bundle; 26 import android.provider.SearchIndexableResource; 27 import android.support.v7.preference.Preference; 28 import android.view.inputmethod.InputMethodInfo; 29 import android.view.inputmethod.InputMethodManager; 30 31 import com.android.internal.logging.nano.MetricsProto.MetricsEvent; 32 import com.android.internal.util.Preconditions; 33 import com.android.settings.R; 34 import com.android.settings.SettingsPreferenceFragment; 35 import com.android.settings.search.BaseSearchIndexProvider; 36 import com.android.settings.search.Indexable; 37 import com.android.settingslib.inputmethod.InputMethodAndSubtypeUtil; 38 import com.android.settingslib.inputmethod.InputMethodPreference; 39 40 import java.text.Collator; 41 import java.util.ArrayList; 42 import java.util.Arrays; 43 import java.util.List; 44 45 public final class VirtualKeyboardFragment extends SettingsPreferenceFragment implements Indexable { 46 47 private static final String ADD_VIRTUAL_KEYBOARD_SCREEN = "add_virtual_keyboard_screen"; 48 private static final Drawable NO_ICON = new ColorDrawable(Color.TRANSPARENT); 49 50 private final ArrayList<InputMethodPreference> mInputMethodPreferenceList = new ArrayList<>(); 51 private InputMethodManager mImm; 52 private DevicePolicyManager mDpm; 53 private Preference mAddVirtualKeyboardScreen; 54 55 @Override onCreatePreferences(Bundle bundle, String s)56 public void onCreatePreferences(Bundle bundle, String s) { 57 Activity activity = Preconditions.checkNotNull(getActivity()); 58 addPreferencesFromResource(R.xml.virtual_keyboard_settings); 59 mImm = Preconditions.checkNotNull(activity.getSystemService(InputMethodManager.class)); 60 mDpm = Preconditions.checkNotNull(activity.getSystemService(DevicePolicyManager.class)); 61 mAddVirtualKeyboardScreen = Preconditions.checkNotNull( 62 findPreference(ADD_VIRTUAL_KEYBOARD_SCREEN)); 63 } 64 65 @Override onResume()66 public void onResume() { 67 super.onResume(); 68 // Refresh internal states in mInputMethodSettingValues to keep the latest 69 // "InputMethodInfo"s and "InputMethodSubtype"s 70 updateInputMethodPreferenceViews(); 71 } 72 73 @Override getMetricsCategory()74 public int getMetricsCategory() { 75 return MetricsEvent.VIRTUAL_KEYBOARDS; 76 } 77 updateInputMethodPreferenceViews()78 private void updateInputMethodPreferenceViews() { 79 // Clear existing "InputMethodPreference"s 80 mInputMethodPreferenceList.clear(); 81 List<String> permittedList = mDpm.getPermittedInputMethodsForCurrentUser(); 82 final Context context = getPrefContext(); 83 final List<InputMethodInfo> imis = mImm.getEnabledInputMethodList(); 84 final int N = (imis == null ? 0 : imis.size()); 85 for (int i = 0; i < N; ++i) { 86 final InputMethodInfo imi = imis.get(i); 87 final boolean isAllowedByOrganization = permittedList == null 88 || permittedList.contains(imi.getPackageName()); 89 Drawable icon; 90 try { 91 // TODO: Consider other ways to retrieve an icon to show here. 92 icon = getActivity().getPackageManager().getApplicationIcon(imi.getPackageName()); 93 } catch (Exception e) { 94 // TODO: Consider handling the error differently perhaps by showing default icons. 95 icon = NO_ICON; 96 } 97 final InputMethodPreference pref = new InputMethodPreference( 98 context, 99 imi, 100 false, /* isImeEnabler */ 101 isAllowedByOrganization, 102 null /* this can be null since isImeEnabler is false */); 103 pref.setIcon(icon); 104 mInputMethodPreferenceList.add(pref); 105 } 106 final Collator collator = Collator.getInstance(); 107 mInputMethodPreferenceList.sort((lhs, rhs) -> lhs.compareTo(rhs, collator)); 108 getPreferenceScreen().removeAll(); 109 for (int i = 0; i < N; ++i) { 110 final InputMethodPreference pref = mInputMethodPreferenceList.get(i); 111 pref.setOrder(i); 112 getPreferenceScreen().addPreference(pref); 113 InputMethodAndSubtypeUtil.removeUnnecessaryNonPersistentPreference(pref); 114 pref.updatePreferenceViews(); 115 } 116 mAddVirtualKeyboardScreen.setIcon(R.drawable.ic_add_24dp); 117 mAddVirtualKeyboardScreen.setOrder(N); 118 getPreferenceScreen().addPreference(mAddVirtualKeyboardScreen); 119 } 120 121 public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = 122 new BaseSearchIndexProvider() { 123 @Override 124 public List<SearchIndexableResource> getXmlResourcesToIndex( 125 Context context, boolean enabled) { 126 final SearchIndexableResource sir = new SearchIndexableResource(context); 127 sir.xmlResId = R.xml.virtual_keyboard_settings; 128 return Arrays.asList(sir); 129 } 130 131 @Override 132 public List<String> getNonIndexableKeys(Context context) { 133 final List<String> keys = super.getNonIndexableKeys(context); 134 keys.add("add_virtual_keyboard_screen"); 135 return keys; 136 } 137 }; 138 } 139