/********************************************************

 * Google map utility functions for Great Real Estate

 * by Roger Theriault, version 0.1.0 2008-06-15

 *

 * Requires a function gre_setupmap() defined to set the position

 * and marker overlay

 * and also requires the page needing this to invoke the google loader

 */



/*

 * Changelog:

 * [2008-06-27] added functions to handle XML population of featured map

 * [2008-06-27] changed id of map canvas from map_canvas to gre_map_canvas

 *              to reduce conflicts

 *

 */



	

var gre_map;

var gre_multi_map;

var gre_customIcons = [];



function gre_setup_custom_icons() {

    var iconForSale;

    var iconForRent;

    iconForSale = new GIcon();

    iconForSale.image = 'http://labs.google.com/ridefinder/images/mm_20_green.png';

    iconForSale.shadow = 'http://labs.google.com/ridefinder/images/mm_20_shadow.png';

    iconForSale.iconSize = new GSize(12, 20);

    iconForSale.shadowSize = new GSize(22, 20);

    iconForSale.iconAnchor = new GPoint(6, 20);

    iconForSale.infoWindowAnchor = new GPoint(5, 1);



    iconForRent = new GIcon(); 

    iconForRent.image = 'http://labs.google.com/ridefinder/images/mm_20_blue.png';

    iconForRent.shadow = 'http://labs.google.com/ridefinder/images/mm_20_shadow.png';

    iconForRent.iconSize = new GSize(12, 20);

    iconForRent.shadowSize = new GSize(22, 20);

    iconForRent.iconAnchor = new GPoint(6, 20);

    iconForRent.infoWindowAnchor = new GPoint(5, 1);



    iconSold = new GIcon(); 

    iconSold.image = 'http://labs.google.com/ridefinder/images/mm_20_red.png';

    iconSold.shadow = 'http://labs.google.com/ridefinder/images/mm_20_shadow.png';

    iconSold.iconSize = new GSize(12, 20);

    iconSold.shadowSize = new GSize(22, 20);

    iconSold.iconAnchor = new GPoint(6, 20);

    iconSold.infoWindowAnchor = new GPoint(5, 1);



    gre_customIcons["sold"] = iconSold;

    gre_customIcons["forrent"] = iconForRent;

    gre_customIcons["forsale"] = iconForSale;

}



function gre_createMarker(point,html) {

       	var marker = new GMarker(point);

       	GEvent.addListener(marker, "click", function() {

       		marker.openInfoWindowHtml(html);

       	});

       	return marker;

}



function gre_createMarkerCustom(point, name, address, type, ref, img) {

      var marker = new GMarker(point, gre_customIcons[type]);

      var html = img + '<strong>' + name + "</a></strong> <br />" + address +

	'<br />' + '<a href="' + ref + '">listing info</a>' 

      GEvent.addListener(marker, 'click', function() {

        marker.openInfoWindowHtml(html);

      });

      return marker;

    }







function gre_mapinitialize() {

	jQuery(window).bind("unload", GUnload); // guard against leaks



	gre_map = new google.maps.Map2(document.getElementById("gre_map_canvas"));

	gre_map.addControl(new google.maps.LargeMapControl());

	gre_map.addControl(new google.maps.MapTypeControl());

	gre_setupmap();

}



// set up map of all properties in feed

function gre_initmultimap() {

	jQuery(window).bind("unload", GUnload); // guard against leaks



	gre_setup_custom_icons();



	gre_multi_map = new google.maps.Map2(document.getElementById("gre_map_multi"));

	gre_multi_map.addControl(new google.maps.LargeMapControl());

	gre_multi_map.addControl(new google.maps.MapTypeControl());

	var temp_point = new google.maps.LatLng(0,0);

	gre_multi_map.setCenter(temp_point, 5);

	GDownloadUrl("/feed/googlemaps/", gre_addmarkers );

}



function gre_addmarkers( data ) {

	var xml = GXml.parse(data);

	var markers = xml.documentElement.getElementsByTagName("marker");

	var maxLat = 0;

	var minLat = 91;

	var maxLng = -181;

	var minLng = 181;

	for (var i = 0; i < markers.length; i++) {

		var name = markers[i].getAttribute("name");

		var address = markers[i].getAttribute("address");

		address = address.replace(/,/,'<br />');

		var type = markers[i].getAttribute("type");

		var ref = markers[i].getAttribute("ref");

		var info = markers[i].getElementsByTagName("info")[0].childNodes[0].nodeValue;

		var lat = parseFloat(markers[i].getAttribute("lat"));

		var lng = parseFloat(markers[i].getAttribute("lng"));

		var point = new GLatLng(lat,lng);

		if (lat > maxLat) maxLat = lat;

		if (lat < minLat) minLat = lat;

		if (lng > maxLng) maxLng = lng;

		if (lng < minLng) minLng = lng;

		var marker = gre_createMarkerCustom(point, name, address, type, ref, info);

		gre_multi_map.addOverlay(marker);

	}

	var ctrLat = minLat + (maxLat - minLat)/2;

	var ctrLng = minLng + (maxLng - minLng)/2;

	var new_point = new google.maps.LatLng(ctrLat,ctrLng);

	gre_multi_map.setCenter(new_point, 11);

}