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/*
* Copyright (C) 2006 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 android.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.widget.RemoteViews.RemoteView;
/**
* Simple {@link ViewAnimator} that will animate between two or more views
* that have been added to it. Only one child is shown at a time. If
* requested, can automatically flip between each child at a regular interval.
*
* @attr ref android.R.styleable#ViewFlipper_flipInterval
*/
public class ViewFlipper extends ViewAnimator {
private int mFlipInterval = 3000;
private boolean mKeepFlipping = false;
public ViewFlipper(Context context) {
super(context);
}
public ViewFlipper(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray a = context.obtainStyledAttributes(attrs,
com.android.internal.R.styleable.ViewFlipper);
mFlipInterval = a.getInt(com.android.internal.R.styleable.ViewFlipper_flipInterval,
3000);
a.recycle();
}
/**
* How long to wait before flipping to the next view
*
* @param milliseconds
* time in milliseconds
*/
@android.view.RemotableViewMethod
public void setFlipInterval(int milliseconds) {
mFlipInterval = milliseconds;
}
/**
* Start a timer to cycle through child views
*/
public void startFlipping() {
if (!mKeepFlipping) {
mKeepFlipping = true;
showOnly(mWhichChild);
Message msg = mHandler.obtainMessage(FLIP_MSG);
mHandler.sendMessageDelayed(msg, mFlipInterval);
}
}
/**
* No more flips
*/
public void stopFlipping() {
mKeepFlipping = false;
}
/**
* Returns true if the child views are flipping.
*/
public boolean isFlipping() {
return mKeepFlipping;
}
private final int FLIP_MSG = 1;
private final Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
if (msg.what == FLIP_MSG) {
if (mKeepFlipping) {
showNext();
msg = obtainMessage(FLIP_MSG);
sendMessageDelayed(msg, mFlipInterval);
}
}
}
};
}
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