/*
* Copyright (c) 2013 Menny Even-Danan
*
* 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.anysoftkeyboard.voice;
import android.annotation.TargetApi;
import android.content.Context;
import android.inputmethodservice.InputMethodService;
import android.os.Build;
import android.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.InputMethodManager;
import android.view.inputmethod.InputMethodSubtype;
import java.util.List;
import java.util.Map;
/**
* Triggers a voice recognition using Google voice typing.
*/
@TargetApi(11)
class ImeTrigger implements Trigger {
private static final String VOICE_IME_SUBTYPE_MODE = "voice";
private static final String VOICE_IME_PACKAGE_PREFIX = "com.google.android";
private final InputMethodService mInputMethodService;
public ImeTrigger(InputMethodService inputMethodService) {
mInputMethodService = inputMethodService;
}
/**
* Switches to Voice IME.
*/
public void startVoiceRecognition(String language) {
InputMethodManager inputMethodManager = getInputMethodManager(mInputMethodService);
InputMethodInfo inputMethodInfo = getVoiceImeInputMethodInfo(inputMethodManager);
if (inputMethodInfo == null) {
return;
}
inputMethodManager.setInputMethodAndSubtype(mInputMethodService.getWindow().getWindow()
.getAttributes().token,
inputMethodInfo.getId(),
getVoiceImeSubtype(inputMethodManager, inputMethodInfo));
}
private static InputMethodManager getInputMethodManager(InputMethodService inputMethodService) {
return (InputMethodManager) inputMethodService
.getSystemService(Context.INPUT_METHOD_SERVICE);
}
private InputMethodSubtype getVoiceImeSubtype(
InputMethodManager inputMethodManager, InputMethodInfo inputMethodInfo)
throws SecurityException,
IllegalArgumentException {
Map<InputMethodInfo, List<InputMethodSubtype>> map = inputMethodManager
.getShortcutInputMethodsAndSubtypes();
List<InputMethodSubtype> list = map.get(inputMethodInfo);
if (list != null && list.size() > 0) {
return list.get(0);
} else {
return null;
}
}
private static InputMethodInfo getVoiceImeInputMethodInfo(InputMethodManager inputMethodManager)
throws SecurityException, IllegalArgumentException {
for (InputMethodInfo inputMethodInfo : inputMethodManager.getEnabledInputMethodList()) {
for (int i = 0; i < inputMethodInfo.getSubtypeCount(); i++) {
InputMethodSubtype subtype = inputMethodInfo.getSubtypeAt(i);
if (VOICE_IME_SUBTYPE_MODE.equals(subtype.getMode())) {
if (inputMethodInfo.getComponent().getPackageName()
.startsWith(VOICE_IME_PACKAGE_PREFIX)) {
return inputMethodInfo;
}
}
}
}
return null;
}
/**
* Returns true if an implementation of Voice IME is installed.
*/
public static boolean isInstalled(InputMethodService inputMethodService) {
if (Build.VERSION.SDK_INT < 14/* Build.VERSION_CODES.ICE_CREAM_SANDWICH*/) {
return false;
}
InputMethodInfo inputMethodInfo = getVoiceImeInputMethodInfo(
getInputMethodManager(inputMethodService));
if (inputMethodInfo == null) {
return false;
}
return inputMethodInfo.getSubtypeCount() > 0;
}
public void onStartInputView() {
// Empty. Voice IME pastes the recognition result directly into the text
// view
}
}