ObservableScrollView.java

package at.favre.lib.dali.view;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.widget.ScrollView;

/**
 * This is a simple extension to the scrollView that
 * allows to set a scrollListener
 */
public class ObservableScrollView extends ScrollView{
	private Observers.ScrollViewListener scrollViewListener = null;
	private Observers.DrawListener onDrawListener;

	public ObservableScrollView(Context context) {
		super(context);
	}

	public ObservableScrollView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	public ObservableScrollView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public void setScrollViewListener(Observers.ScrollViewListener scrollViewListener) {
		this.scrollViewListener = scrollViewListener;
	}

	@Override
	protected void onDraw(Canvas canvas) {
		super.onDraw(canvas);
		if(onDrawListener != null) {
			onDrawListener.onDraw(canvas);
		}
	}

	public void setOnDrawListener(Observers.DrawListener onDrawListener) {
		this.onDrawListener = onDrawListener;
	}

	@Override
	protected void onScrollChanged(int x, int y, int oldx, int oldy) {
		super.onScrollChanged(x, y, oldx, oldy);
		if(scrollViewListener != null) {
			scrollViewListener.onScrollChanged(this, x, y, oldx, oldy);
		}
	}


}