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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.phonegap.plugin.mobileaccessibility;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.annotation.TargetApi;
import android.content.Context;
import android.view.accessibility.AccessibilityManager.TouchExplorationStateChangeListener;
import android.view.accessibility.CaptioningManager;
import android.view.accessibility.CaptioningManager.CaptioningChangeListener;
@TargetApi(19)
public class KitKatMobileAccessibilityHelper extends
JellyBeanMobileAccessibilityHelper {
private CaptioningManager mCaptioningManager;
private CaptioningChangeListener mCaptioningChangeListener;
private TouchExplorationStateChangeListener mTouchExplorationStateChangeListener;
@Override
public void initialize(MobileAccessibility mobileAccessibility) {
super.initialize(mobileAccessibility);
mCaptioningManager = (CaptioningManager) mobileAccessibility.cordova.getActivity().getSystemService(Context.CAPTIONING_SERVICE);
}
@Override
public boolean isScreenReaderRunning() {
return mAccessibilityManager.getEnabledAccessibilityServiceList(AccessibilityServiceInfo.FEEDBACK_BRAILLE | AccessibilityServiceInfo.FEEDBACK_SPOKEN).size() > 0;
}
@Override
public boolean isClosedCaptioningEnabled() {
return mCaptioningManager.isEnabled();
}
@Override
public boolean isTouchExplorationEnabled() {
return mAccessibilityManager.isTouchExplorationEnabled();
}
@Override
public void addStateChangeListeners() {
super.addStateChangeListeners();
if (mCaptioningChangeListener == null) {
mCaptioningChangeListener = new CaptioningChangeListener() {
@Override
public void onEnabledChanged(boolean enabled) {
onCaptioningEnabledChanged(enabled);
}
};
}
mCaptioningManager.addCaptioningChangeListener(mCaptioningChangeListener);
if (mTouchExplorationStateChangeListener == null) {
mTouchExplorationStateChangeListener = new InternalTouchExplorationStateChangeListener();
}
mAccessibilityManager.addTouchExplorationStateChangeListener(mTouchExplorationStateChangeListener);
}
@Override
public void removeStateChangeListeners() {
super.removeStateChangeListeners();
if (mCaptioningChangeListener != null) {
mCaptioningManager.removeCaptioningChangeListener(mCaptioningChangeListener);
mCaptioningChangeListener = null;
}
if (mTouchExplorationStateChangeListener != null) {
mAccessibilityManager.removeTouchExplorationStateChangeListener(mTouchExplorationStateChangeListener);
mTouchExplorationStateChangeListener = null;
}
}
private class InternalTouchExplorationStateChangeListener
implements TouchExplorationStateChangeListener {
@Override
public void onTouchExplorationStateChanged(boolean enabled) {
mMobileAccessibility.onTouchExplorationStateChanged(enabled);
}
}
}