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/*
* Copyright (C) 2016 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.internal.widget;
import android.annotation.Nullable;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.FrameLayout;
import android.widget.RemoteViews;
import java.util.ArrayList;
/**
* The Layout class which handles template details for the Notification.MediaStyle
*
* @hide
*/
@RemoteViews.RemoteView
public class MediaNotificationView extends FrameLayout {
private ArrayList<VisibilityChangeListener> mListeners;
public MediaNotificationView(Context context) {
this(context, null);
}
public MediaNotificationView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs, 0);
}
public MediaNotificationView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public MediaNotificationView(Context context, AttributeSet attrs, int defStyleAttr,
int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
}
@Override
public void onVisibilityAggregated(boolean isVisible) {
super.onVisibilityAggregated(isVisible);
if (mListeners != null) {
for (int i = 0; i < mListeners.size(); i++) {
mListeners.get(i).onAggregatedVisibilityChanged(isVisible);
}
}
}
/**
* Add a listener to receive updates on the visibility of this view
*
* @param listener The listener to add.
*/
public void addVisibilityListener(VisibilityChangeListener listener) {
if (mListeners == null) {
mListeners = new ArrayList<>();
}
if (!mListeners.contains(listener)) {
mListeners.add(listener);
}
}
/**
* Remove the specified listener
*
* @param listener The listener to remove.
*/
public void removeVisibilityListener(VisibilityChangeListener listener) {
if (mListeners != null) {
mListeners.remove(listener);
}
}
/**
* Interface for receiving updates when the view's visibility changes
*/
public interface VisibilityChangeListener {
/**
* Method called when the visibility of this view has changed
* @param isVisible true if the view is now visible
*/
void onAggregatedVisibilityChanged(boolean isVisible);
}
}
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