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/*
* Copyright (C) 2011 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.inputmethod.compat;
import com.android.inputmethod.latin.LatinIME;
import com.android.inputmethod.latin.SubtypeSwitcher;
import com.android.inputmethod.latin.Utils;
import android.content.Context;
import android.os.IBinder;
import android.text.TextUtils;
import android.util.Log;
import android.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.InputMethodManager;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
// TODO: Override this class with the concrete implementation if we need to take care of the
// performance.
public class InputMethodManagerCompatWrapper {
private static final String TAG = InputMethodManagerCompatWrapper.class.getSimpleName();
private static final Method METHOD_getCurrentInputMethodSubtype =
CompatUtils.getMethod(InputMethodManager.class, "getCurrentInputMethodSubtype");
private static final Method METHOD_getEnabledInputMethodSubtypeList =
CompatUtils.getMethod(InputMethodManager.class, "getEnabledInputMethodSubtypeList",
InputMethodInfo.class, boolean.class);
private static final Method METHOD_getShortcutInputMethodsAndSubtypes =
CompatUtils.getMethod(InputMethodManager.class, "getShortcutInputMethodsAndSubtypes");
private static final Method METHOD_setInputMethodAndSubtype =
CompatUtils.getMethod(
InputMethodManager.class, "setInputMethodAndSubtype", IBinder.class,
String.class, InputMethodSubtypeCompatWrapper.CLASS_InputMethodSubtype);
private static final Method METHOD_switchToLastInputMethod = CompatUtils.getMethod(
InputMethodManager.class, "switchToLastInputMethod", IBinder.class);
private static final InputMethodManagerCompatWrapper sInstance =
new InputMethodManagerCompatWrapper();
// For the compatibility, IMM will create dummy subtypes if subtypes are not found.
// This is required to be false if the current behavior is broken. For now, it's ok to be true.
private static final boolean ALLOW_DUMMY_SUBTYPE = true;
private static final boolean HAS_VOICE_FUNCTION = true;
private static final String VOICE_MODE = "voice";
private static final String KEYBOARD_MODE = "keyboard";
private InputMethodManager mImm;
private String mLatinImePackageName;
private InputMethodManagerCompatWrapper() {
}
public static InputMethodManagerCompatWrapper getInstance(Context context) {
if (sInstance.mImm == null) {
sInstance.init(context);
}
return sInstance;
}
private synchronized void init(Context context) {
mImm = (InputMethodManager) context.getSystemService(
Context.INPUT_METHOD_SERVICE);
if (context instanceof LatinIME) {
mLatinImePackageName = context.getPackageName();
}
}
public InputMethodSubtypeCompatWrapper getCurrentInputMethodSubtype() {
Object o = CompatUtils.invoke(mImm, null, METHOD_getCurrentInputMethodSubtype);
return new InputMethodSubtypeCompatWrapper(o);
}
public List<InputMethodSubtypeCompatWrapper> getEnabledInputMethodSubtypeList(
InputMethodInfoCompatWrapper imi, boolean allowsImplicitlySelectedSubtypes) {
Object retval = CompatUtils.invoke(mImm, null, METHOD_getEnabledInputMethodSubtypeList,
(imi != null ? imi.getInputMethodInfo() : null), allowsImplicitlySelectedSubtypes);
if (retval == null || !(retval instanceof List) || ((List<?>)retval).isEmpty()) {
if (!ALLOW_DUMMY_SUBTYPE) {
// Returns an empty list
return Collections.emptyList();
}
// Creates dummy subtypes
List<InputMethodSubtypeCompatWrapper> subtypeList =
new ArrayList<InputMethodSubtypeCompatWrapper>();
InputMethodSubtypeCompatWrapper keyboardSubtype = getLastResortSubtype(KEYBOARD_MODE);
InputMethodSubtypeCompatWrapper voiceSubtype = getLastResortSubtype(VOICE_MODE);
if (keyboardSubtype != null) {
subtypeList.add(keyboardSubtype);
}
if (voiceSubtype != null) {
subtypeList.add(voiceSubtype);
}
return subtypeList;
}
return CompatUtils.copyInputMethodSubtypeListToWrapper((List<?>)retval);
}
private InputMethodInfoCompatWrapper getLatinImeInputMethodInfo() {
if (TextUtils.isEmpty(mLatinImePackageName))
return null;
return Utils.getInputMethodInfo(this, mLatinImePackageName);
}
@SuppressWarnings("unused")
private InputMethodSubtypeCompatWrapper getLastResortSubtype(String mode) {
if (VOICE_MODE.equals(mode) && !HAS_VOICE_FUNCTION)
return null;
Locale inputLocale = SubtypeSwitcher.getInstance().getInputLocale();
if (inputLocale == null)
return null;
return new InputMethodSubtypeCompatWrapper(0, 0, inputLocale.toString(), mode, "");
}
public Map<InputMethodInfoCompatWrapper, List<InputMethodSubtypeCompatWrapper>>
getShortcutInputMethodsAndSubtypes() {
Object retval = CompatUtils.invoke(mImm, null, METHOD_getShortcutInputMethodsAndSubtypes);
if (retval == null || !(retval instanceof Map) || ((Map<?, ?>)retval).isEmpty()) {
if (!ALLOW_DUMMY_SUBTYPE) {
// Returns an empty map
return Collections.emptyMap();
}
// Creates dummy subtypes
InputMethodInfoCompatWrapper imi = getLatinImeInputMethodInfo();
InputMethodSubtypeCompatWrapper voiceSubtype = getLastResortSubtype(VOICE_MODE);
if (imi != null && voiceSubtype != null) {
Map<InputMethodInfoCompatWrapper, List<InputMethodSubtypeCompatWrapper>>
shortcutMap =
new HashMap<InputMethodInfoCompatWrapper,
List<InputMethodSubtypeCompatWrapper>>();
List<InputMethodSubtypeCompatWrapper> subtypeList =
new ArrayList<InputMethodSubtypeCompatWrapper>();
subtypeList.add(voiceSubtype);
shortcutMap.put(imi, subtypeList);
return shortcutMap;
} else {
return Collections.emptyMap();
}
}
Map<InputMethodInfoCompatWrapper, List<InputMethodSubtypeCompatWrapper>> shortcutMap =
new HashMap<InputMethodInfoCompatWrapper, List<InputMethodSubtypeCompatWrapper>>();
final Map<?, ?> retvalMap = (Map<?, ?>)retval;
for (Object key : retvalMap.keySet()) {
if (!(key instanceof InputMethodInfo)) {
Log.e(TAG, "Class type error.");
return null;
}
shortcutMap.put(new InputMethodInfoCompatWrapper((InputMethodInfo)key),
CompatUtils.copyInputMethodSubtypeListToWrapper(retvalMap.get(key)));
}
return shortcutMap;
}
public void setInputMethodAndSubtype(
IBinder token, String id, InputMethodSubtypeCompatWrapper subtype) {
CompatUtils.invoke(mImm, null, METHOD_setInputMethodAndSubtype,
token, id, subtype.getOriginalObject());
}
public boolean switchToLastInputMethod(IBinder token) {
if (SubtypeSwitcher.getInstance().isDummyVoiceMode()) {
return true;
}
return (Boolean)CompatUtils.invoke(mImm, false, METHOD_switchToLastInputMethod, token);
}
public List<InputMethodInfoCompatWrapper> getEnabledInputMethodList() {
if (mImm == null) return null;
List<InputMethodInfoCompatWrapper> imis = new ArrayList<InputMethodInfoCompatWrapper>();
for (InputMethodInfo imi : mImm.getEnabledInputMethodList()) {
imis.add(new InputMethodInfoCompatWrapper(imi));
}
return imis;
}
public void showInputMethodPicker() {
if (mImm == null) return;
mImm.showInputMethodPicker();
}
}
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