// manages google maps
(function($){
	var centerLat;
	var centerLong;
	var zoom;
	var mapConfig;
	var cluster;
	var map;
	// initialization
	$.fn.russianmap_initialize = function(region) {
		switch (region) {
			case 'sud' :
				this.centerLat = 44.902577996288876;
				this.centerLong = 43.22021484375;
				this.zoom = 6;
				break;
			case 'central' :
				this.centerLat = 54.6992335284814;
				this.centerLong = 38.64990234375;
				this.zoom = 6;
				break;
			case 'volga' :
				this.centerLat = 54.826007999094955;
				this.centerLong = 54.66796875;
				this.zoom = 5;
				break;
			case 'nordouest' :
				this.centerLat = 64.30182213914463;
				this.centerLong = 42.36328125;
				this.zoom = 5;
				break;
			case 'oural' :
				this.centerLat = 58.676937672586924;
				this.centerLong = 71.103515625;
				this.zoom = 5;
				break;
			case 'siberie' :
				this.centerLat = 62.2679226294176;
				this.centerLong = 98.26171875;
				this.zoom = 4;
				break;
			case 'extremeorient' :
				this.centerLat = 64.92354174306496;
				this.centerLong = 159.609375;
				this.zoom = 3;
				break;
			case 'russie' :
			default :
				this.centerLat = 58.722599;
				this.centerLong = 79.1015625;
				this.zoom = 3;
				break;
		}
		this.mapConfig = {zoom:this.zoom,centerLat:this.centerLat,centerLong:this.centerLong};
	};
	// create the map
	$.fn.create_map = function(mapId,region) {
		if (GBrowserIsCompatible()) {
			this.russianmap_initialize(region);
			var latlng = new GLatLng(this.mapConfig.centerLat,this.mapConfig.centerLong);
			this.map = new GMap2(document.getElementById(mapId));
			this.map.setCenter(latlng, this.mapConfig.zoom);
//			this.map.addControl(new GMapTypeControl(), new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(7, 7)));
			this.map.addControl(new GLargeMapControl(), new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(7, 28)));
			
			var marker, markersArray=[];
			//	json data already loaded from markers.php
			for (var i=0; i<json.length; i++) {
				marker = this.newMarker(new GLatLng(json[i].lat, json[i].lng), json[i].id,json[i].title);
				markersArray.push(marker);
			}
			
			this.cluster = new ClusterMarker(this.map, { markers:markersArray } );
//			this.cluster.fitMapToMarkers();
			
			this.map.savePosition();	//	enables the large map control centre button to return the map to initial view
			this.cluster.refresh(true);
			//	add an HtmlControl to enable toggling of the ClusterMarker cluster function
//			var html='<div class="htmlControl" style="padding:0px 3px 3px 3px">Enable clustering: <input type="checkbox" checked="checked" onclick="toggleClustering()" /></div>';
//			var control = new HtmlControl(html);
//			this.map.addControl(control, new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(7,7)));
			return this.map;
		}

		
	};
	$.fn.newMarker = function(markerLocation, markerId, title) {
		var marker=new GMarker(markerLocation, {title:title});
		GEvent.addListener(marker, 'click', function() {
			marker.openInfoWindowHtml('<p>'+title+'</p>');
		});
		return marker;
	}

	$.fn.toggleClustering = function() {
		this.cluster.clusteringEnabled =! this.cluster.clusteringEnabled;
		this.cluster.refresh(true);	//	true required to force a full update of the markers - otherwise the update would occur next time that the map is zoomed or the active markers change
	}

	
	
})(jQuery);


jQuery(document).ready(function() {
	var map = ($('#map'));
	if (map.length>0){
		$.fn.create_map("map","russie");
		$("._minimap").click(function(){
			$.fn.create_map("map",$(this).children("img").attr("alt"));
			$(".activeMap").removeClass("activeMap");
			$(this).addClass("activeMap");
		});
	}
});