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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.settingslib.inputmethod;
import android.annotation.UiThread;
import android.content.ContentResolver;
import android.content.Context;
import android.util.Log;
import android.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.InputMethodManager;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
/**
* This class is a wrapper for {@link InputMethodManager} and
* {@link android.provider.Settings.Secure#ENABLED_INPUT_METHODS}. You need to refresh internal
* states manually on some events when "InputMethodInfo"s and "InputMethodSubtype"s can be changed.
*
* <p>TODO: Consolidate this with {@link InputMethodAndSubtypeUtil}.</p>
*/
@UiThread
public class InputMethodSettingValuesWrapper {
private static final String TAG = InputMethodSettingValuesWrapper.class.getSimpleName();
private static volatile InputMethodSettingValuesWrapper sInstance;
private final ArrayList<InputMethodInfo> mMethodList = new ArrayList<>();
private final ContentResolver mContentResolver;
private final InputMethodManager mImm;
public static InputMethodSettingValuesWrapper getInstance(Context context) {
if (sInstance == null) {
synchronized (TAG) {
if (sInstance == null) {
sInstance = new InputMethodSettingValuesWrapper(context);
}
}
}
return sInstance;
}
// Ensure singleton
private InputMethodSettingValuesWrapper(Context context) {
mContentResolver = context.getContentResolver();
mImm = context.getSystemService(InputMethodManager.class);
refreshAllInputMethodAndSubtypes();
}
public void refreshAllInputMethodAndSubtypes() {
mMethodList.clear();
mMethodList.addAll(mImm.getInputMethodList());
}
public List<InputMethodInfo> getInputMethodList() {
return new ArrayList<>(mMethodList);
}
public boolean isAlwaysCheckedIme(InputMethodInfo imi) {
final boolean isEnabled = isEnabledImi(imi);
if (getEnabledInputMethodList().size() <= 1 && isEnabled) {
return true;
}
final int enabledValidNonAuxAsciiCapableImeCount =
getEnabledValidNonAuxAsciiCapableImeCount();
return enabledValidNonAuxAsciiCapableImeCount <= 1
&& !(enabledValidNonAuxAsciiCapableImeCount == 1 && !isEnabled)
&& imi.isSystem()
&& InputMethodAndSubtypeUtil.isValidNonAuxAsciiCapableIme(imi);
}
private int getEnabledValidNonAuxAsciiCapableImeCount() {
int count = 0;
final List<InputMethodInfo> enabledImis = getEnabledInputMethodList();
for (final InputMethodInfo imi : enabledImis) {
if (InputMethodAndSubtypeUtil.isValidNonAuxAsciiCapableIme(imi)) {
++count;
}
}
if (count == 0) {
Log.w(TAG, "No \"enabledValidNonAuxAsciiCapableIme\"s found.");
}
return count;
}
public boolean isEnabledImi(InputMethodInfo imi) {
final List<InputMethodInfo> enabledImis = getEnabledInputMethodList();
for (final InputMethodInfo tempImi : enabledImis) {
if (tempImi.getId().equals(imi.getId())) {
return true;
}
}
return false;
}
/**
* Returns the list of the enabled {@link InputMethodInfo} determined by
* {@link android.provider.Settings.Secure#ENABLED_INPUT_METHODS} rather than just returning
* {@link InputMethodManager#getEnabledInputMethodList()}.
*
* @return the list of the enabled {@link InputMethodInfo}
*/
private ArrayList<InputMethodInfo> getEnabledInputMethodList() {
final HashMap<String, HashSet<String>> enabledInputMethodsAndSubtypes =
InputMethodAndSubtypeUtil.getEnabledInputMethodsAndSubtypeList(mContentResolver);
final ArrayList<InputMethodInfo> result = new ArrayList<>();
for (InputMethodInfo imi : mMethodList) {
if (enabledInputMethodsAndSubtypes.keySet().contains(imi.getId())) {
result.add(imi);
}
}
return result;
}
}
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