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/* Ginfo.java

{{IS_NOTE
	Purpose:
		
	Description:
		
	History:
		Thu Oct 19 16:36:52     2006, Created by henrichen
}}IS_NOTE

Copyright (C) 2006 Potix Corporation. All Rights Reserved.

{{IS_RIGHT
	This program is distributed under GPL Version 2.0 in the hope that
	it will be useful, but WITHOUT ANY WARRANTY.
}}IS_RIGHT
*/
package org.zkoss.gmaps;

import org.zkoss.lang.Objects;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.UiException;
import org.zkoss.zul.impl.XulElement;

/**
 * The popup info window of the Gooogle Maps. You can specify the content
 * in pure text or HTML.
 *
 * @author henrichen
 */
public class Ginfo extends XulElement implements Mapitem {
	private static final long serialVersionUID = 200807041526L;
	protected double _lat = 37.4419;
	protected double _lng = -122.1419;
	private String _content = "";
	private boolean _open = false;

	public Ginfo() {
	}
	public Ginfo(String content) {
		setContent(content);
	}
	public Ginfo(String content, double lat, double lng) {
		setContent(content);
		setAnchor(lat, lng);
	}

	/** Returns the content of the info window.
	 * Default: empty.
	 */
	public String getContent() {
		return _content;
	}
	/** Sets the contents (can be pure text or HTML).
	 */
	public void setContent(String content) {
		if (content == null) content = "";
		if (!Objects.equals(_content, content)) {
			_content = content;
			smartUpdate("content", _content);
		}
	}

	/** set the anchor point of the info window.
	 * @param lat latitude of the anchor point in Google Maps.
	 * @param lng longitude of the anchor point in Google Maps.
	 */
	public void setAnchor(double lat, double lng) {
		boolean update = false;
		if (lat != _lat) {
			_lat = lat;
			update = true;
		}
		if (lng != _lng) {
			_lng = lng;
			update = true;
		}
		if (update) {
			smartUpdate("anchor", getAnchor());
		}
	}

	/** set the latitude of the anchor point.
	 */
	public void setLat(double lat) {
		if (lat != _lat) {
			_lat = lat;
			smartUpdate("anchor", getAnchor());
		}
	}
	
	/** get the latitude of the anchor point.
	 */
	public double getLat() {
		return _lat;
	}
	
	/** set the longitude of the anchor point.
	 */
	public void setLng(double lng) {
		if (lng != _lng) {
			_lng = lng;
			smartUpdate("anchor", getAnchor());
		}
	}
	
	/** get the longitude of the anchor point.
	 */
	public double getLng() {
		return _lng;
	}
	
	/** Open this Info */
	public void setOpen(boolean b) {
		Gmaps gmaps = (Gmaps) getParent();
		if (gmaps != null) {
			if (b) {
				gmaps.openInfo(this);
			} else if (gmaps.getInfo() == this) {
				gmaps.closeInfo();
			}
		}
		_open = b;
	}
	
	/*package*/ void setOpenByClient(boolean b) {
		_open = b;
	}
	
    /** whether this Ginfo is the currently opened info window of its parent {@link Gmaps}.
     */
    public boolean isOpen() {
        Gmaps gmaps = (Gmaps) getParent();
        return (gmaps != null && gmaps.getInfo() == this) || _open;
    }
   
	/** Returns the info anchor point in double[] array where [0] is lat and [1] is lng ; used by component developers
	 * only.
	 */
	private double[] getAnchor() {
		return new double[] {_lat, _lng};
	}

	/*package*/ boolean isGinfo() {
		return true;
	}
	
	//-- Component --//
	/** Default: not childable.
	 */
	public boolean isChildable() {
		return false;
	}

	public void setParent(Component parent) {
		if (parent != null && !(parent instanceof Gmaps))
			throw new UiException("Wrong parent: "+parent);
		super.setParent(parent);
	}

	protected void renderProperties(org.zkoss.zk.ui.sys.ContentRenderer renderer)
	throws java.io.IOException {
		super.renderProperties(renderer);
		render(renderer, "anchor", getAnchor());
		render(renderer, "content", getContent());
		render(renderer, "open", _open);
	}
}