TouchOwner.java

package net.bible.android.view.util;

import android.view.View;

/** primarily to prevent long-touch being handled while dragging a separator on v slow mobiles
 * 
 * @author Martin Denham [mjdenham at gmail dot com]
 * @see gnu.lgpl.License for license details.<br>
 *      The copyright to this program is held by it's author.
 */
public class TouchOwner {

	private long ownershipTime;
	private View currentOwner;
	
	private static final long MAX_OWNERSHIP_TIME = 20*1000; // 20 secs

	private static final TouchOwner singleton = new TouchOwner();
	
	public static TouchOwner getInstance() {
		return singleton;
	}
	
	public void setTouchOwner(View owner) {
		currentOwner = owner;
		ownershipTime = System.currentTimeMillis();
	}
	public void releaseOwnership(View owner) {
		currentOwner = null;
	}
	
	public boolean isTouchOwned() {
		if (currentOwner==null) {
			// Not owned
			return false;
		} else if (System.currentTimeMillis()-ownershipTime>MAX_OWNERSHIP_TIME) {
			// Ownership timed out
			currentOwner = null;
			return false;
		} else {
			// is owned
			return true;
		}
	}

	
}