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/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.android.browser;
import android.content.Context;
import android.support.v4.view.ViewCompat;
import android.support.v4.widget.ViewDragHelper;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.ViewGroup;
import android.widget.FrameLayout;
public class DraggableFrameLayout extends FrameLayout {
private ViewDragHelper mDragger;
public DraggableFrameLayout(Context ctx) {
super(ctx);
}
public DraggableFrameLayout(Context ctx, AttributeSet set) {
super(ctx, set);
}
public DraggableFrameLayout(Context ctx, AttributeSet set, int defStyleAttr) {
super(ctx, set, defStyleAttr);
}
public DraggableFrameLayout(Context ctx, AttributeSet set, int defStyleAttr, int defStyleRes) {
super(ctx, set, defStyleAttr, defStyleRes);
}
public void setDragHelper(ViewDragHelper dragger) {
mDragger = dragger;
}
public final ViewGroup getParentViewGroup() {
return (ViewGroup) DraggableFrameLayout.this.getParent();
}
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
if (mDragger == null)
return super.onInterceptTouchEvent(event);
return mDragger.shouldInterceptTouchEvent(event) ?
true : super.onInterceptTouchEvent(event);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (mDragger == null)
return super.onTouchEvent(event);
mDragger.processTouchEvent(event);
return true;
}
@Override
public void computeScroll() {
super.computeScroll();
if (mDragger != null && mDragger.continueSettling(true)) {
ViewCompat.postInvalidateOnAnimation(this);
}
}
}
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