/*
* 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 android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.IBinder;
import android.text.TextUtils;
import android.util.Log;
import android.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.InputMethodManager;
import com.android.inputmethod.deprecated.LanguageSwitcherProxy;
import com.sugree.inputmethod.latin.R;
import com.sugree.inputmethod.latin.SubtypeSwitcher;
import com.sugree.inputmethod.latin.Utils;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
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();
public static final boolean SUBTYPE_SUPPORTED;
static {
// This static initializer guarantees that METHOD_getShortcutInputMethodsAndSubtypes is
// already instantiated.
SUBTYPE_SUPPORTED = METHOD_getShortcutInputMethodsAndSubtypes != null;
}
// 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.
public static final boolean FORCE_ENABLE_VOICE_EVEN_WITH_NO_VOICE_SUBTYPES =
!InputMethodServiceCompatWrapper.CAN_HANDLE_ON_CURRENT_INPUT_METHOD_SUBTYPE_CHANGED;
private static final String VOICE_MODE = "voice";
private static final String KEYBOARD_MODE = "keyboard";
private InputMethodServiceCompatWrapper mService;
private InputMethodManager mImm;
private PackageManager mPackageManager;
private ApplicationInfo mApplicationInfo;
private LanguageSwitcherProxy mLanguageSwitcherProxy;
private String mLatinImePackageName;
public static InputMethodManagerCompatWrapper getInstance() {
if (sInstance.mImm == null)
Log.w(TAG, "getInstance() is called before initialization");
return sInstance;
}
public static void init(InputMethodServiceCompatWrapper service) {
sInstance.mService = service;
sInstance.mImm = (InputMethodManager) service.getSystemService(
Context.INPUT_METHOD_SERVICE);
sInstance.mLatinImePackageName = service.getPackageName();
sInstance.mPackageManager = service.getPackageManager();
sInstance.mApplicationInfo = service.getApplicationInfo();
sInstance.mLanguageSwitcherProxy = LanguageSwitcherProxy.getInstance();
}
public InputMethodSubtypeCompatWrapper getCurrentInputMethodSubtype() {
if (!SUBTYPE_SUPPORTED) {
return new InputMethodSubtypeCompatWrapper(
0, 0, mLanguageSwitcherProxy.getInputLocale().toString(), KEYBOARD_MODE, "");
}
Object o = CompatUtils.invoke(mImm, null, METHOD_getCurrentInputMethodSubtype);
return new InputMethodSubtypeCompatWrapper(o);
}
public List<InputMethodSubtypeCompatWrapper> getEnabledInputMethodSubtypeList(
InputMethodInfoCompatWrapper imi, boolean allowsImplicitlySelectedSubtypes) {
if (!SUBTYPE_SUPPORTED) {
String[] languages = mLanguageSwitcherProxy.getEnabledLanguages(
allowsImplicitlySelectedSubtypes);
List<InputMethodSubtypeCompatWrapper> subtypeList =
new ArrayList<InputMethodSubtypeCompatWrapper>();
for (String lang: languages) {
subtypeList.add(new InputMethodSubtypeCompatWrapper(0, 0, lang, KEYBOARD_MODE, ""));
}
return subtypeList;
}
Object retval = CompatUtils.invoke(mImm, null, METHOD_getEnabledInputMethodSubtypeList,
(imi != null ? imi.getInputMethodInfo() : null), allowsImplicitlySelectedSubtypes);
if (retval == null || !(retval instanceof List<?>) || ((List<?>)retval).isEmpty()) {
if (!FORCE_ENABLE_VOICE_EVEN_WITH_NO_VOICE_SUBTYPES) {
// Returns an empty list
return Collections.emptyList();
}
// Creates dummy subtypes
@SuppressWarnings("unused")
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(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) && !FORCE_ENABLE_VOICE_EVEN_WITH_NO_VOICE_SUBTYPES)
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 (!FORCE_ENABLE_VOICE_EVEN_WITH_NO_VOICE_SUBTYPES) {
// Returns an empty map
return Collections.emptyMap();
}
// Creates dummy subtypes
@SuppressWarnings("unused")
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;
}
// We don't call this method when we switch between subtypes within this IME.
public void setInputMethodAndSubtype(
IBinder token, String id, InputMethodSubtypeCompatWrapper subtype) {
// TODO: Support subtype change on non-subtype-supported platform.
if (subtype != null && subtype.hasOriginalObject()) {
CompatUtils.invoke(mImm, null, METHOD_setInputMethodAndSubtype,
token, id, subtype.getOriginalObject());
} else {
mImm.setInputMethod(token, id);
}
}
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;
if (SUBTYPE_SUPPORTED) {
mImm.showInputMethodPicker();
return;
}
// The code below are based on {@link InputMethodManager#showInputMethodMenuInternal}.
final InputMethodInfoCompatWrapper myImi = Utils.getInputMethodInfo(
this, mLatinImePackageName);
final List<InputMethodSubtypeCompatWrapper> myImsList = getEnabledInputMethodSubtypeList(
myImi, true);
final InputMethodSubtypeCompatWrapper currentIms = getCurrentInputMethodSubtype();
final List<InputMethodInfoCompatWrapper> imiList = getEnabledInputMethodList();
imiList.remove(myImi);
Collections.sort(imiList, new Comparator<InputMethodInfoCompatWrapper>() {
@Override
public int compare(InputMethodInfoCompatWrapper imi1,
InputMethodInfoCompatWrapper imi2) {
final CharSequence imiId1 = imi1.loadLabel(mPackageManager) + "/" + imi1.getId();
final CharSequence imiId2 = imi2.loadLabel(mPackageManager) + "/" + imi2.getId();
return imiId1.toString().compareTo(imiId2.toString());
}
});
final int myImsCount = myImsList.size();
final int imiCount = imiList.size();
final CharSequence[] items = new CharSequence[myImsCount + imiCount];
int checkedItem = 0;
int index = 0;
final CharSequence myImiLabel = myImi.loadLabel(mPackageManager);
for (int i = 0; i < myImsCount; i++) {
InputMethodSubtypeCompatWrapper ims = myImsList.get(i);
if (currentIms.equals(ims))
checkedItem = index;
final CharSequence title = TextUtils.concat(
ims.getDisplayName(mService, mLatinImePackageName, mApplicationInfo),
" (" + myImiLabel, ")");
items[index] = title;
index++;
}
for (int i = 0; i < imiCount; i++) {
final InputMethodInfoCompatWrapper imi = imiList.get(i);
final CharSequence title = imi.loadLabel(mPackageManager);
items[index] = title;
index++;
}
final OnClickListener buttonListener = new OnClickListener() {
@Override
public void onClick(DialogInterface di, int whichButton) {
final Intent intent = new Intent("android.settings.INPUT_METHOD_SETTINGS");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
| Intent.FLAG_ACTIVITY_CLEAR_TOP);
mService.startActivity(intent);
}
};
final InputMethodServiceCompatWrapper service = mService;
final IBinder token = service.getWindow().getWindow().getAttributes().token;
final OnClickListener selectionListener = new OnClickListener() {
@Override
public void onClick(DialogInterface di, int which) {
di.dismiss();
if (which < myImsCount) {
final int imsIndex = which;
final InputMethodSubtypeCompatWrapper ims = myImsList.get(imsIndex);
service.notifyOnCurrentInputMethodSubtypeChanged(ims);
} else {
final int imiIndex = which - myImsCount;
final InputMethodInfoCompatWrapper imi = imiList.get(imiIndex);
setInputMethodAndSubtype(token, imi.getId(), null);
}
}
};
final AlertDialog.Builder builder = new AlertDialog.Builder(mService)
.setTitle(mService.getString(R.string.selectInputMethod))
.setNeutralButton(R.string.configure_input_method, buttonListener)
.setSingleChoiceItems(items, checkedItem, selectionListener);
mService.showOptionDialogInternal(builder.create());
}
}