var googlemap; 
var map;
var nav_control; // TEST
var markersLayer;
var wdw_set_create_marker;
var wdw_create_marker;
var wdw_osm_layer;
var wdw_osm_feature_layer;
// Hash to store all currently displayed markers
var wdw_current_markers = new Object();
var wdw_last_params = new Object();
var wdw_loading = 0; // add one for each load request, stop if 1 after load
var wdw_reload_uri = '';
var wdw_click_offset_x = 0;
var wdw_appid = 0;
var wdw_domainid = 0;
var wdw_current_popup;
/*var wdw_bms_map_tiles_url;
var wdw_bms_map_tiles_protocol;
var wdw_bms_map_max_zoom;*/

function GUnload() {
}

OpenLayers.Control.Click = OpenLayers.Class(OpenLayers.Control, {                
                defaultHandlerOptions: {
                    'single': true,
                    'double': false,
                    'pixelTolerance': 0,
                    'stopSingle': false,
                    'stopDouble': false
                },

                initialize: function(options) {
                    this.handlerOptions = OpenLayers.Util.extend(
                        {}, this.defaultHandlerOptions
                    );
                    OpenLayers.Control.prototype.initialize.apply(
                        this, arguments
                    ); 
                    this.handler = new OpenLayers.Handler.Click(
                        this, {
                            'click': this.trigger
                        }, this.handlerOptions
                    );
                }, 

                trigger: function(e) {
                	var xy = e.xy;
                	/* jQuery.each(xy, function(i, val) {
					      alert(i + ' - ' + val);
					    });*/
					xy.x = xy.x + wdw_click_offset_x;
                    var lonlat = map.getLonLatFromPixel(xy)
			.transform(
				        map.getProjectionObject(), // to Spherical Mercator Projection
				        new OpenLayers.Projection("EPSG:4326") // transform from WGS 1984
				      );
	                wdwMapClicked(lonlat, xy);
                }
            });

function wdwMapClicked(lonlat, px) {
	var map = getgooglemap();
	if (wdw_create_marker != null) {
		markersLayer.removeMarker(wdw_create_marker);
	}
	if (map.projection == "EPSG:25832") {
		Proj4js.libPath = "http://wdwp.s3.amazonaws.com/r/028/static/js/";
		var source = new Proj4js.Proj('EPSG:4326'); 
		var target = new Proj4js.Proj('EPSG:25832'); 
		var p = new Proj4js.Point(lonlat.lon + "," + lonlat.lat);  
		var p = Proj4js.transform(source, target, p)
		//alert(" nachher	" + p.toShortString());
		point = new OpenLayers.LonLat(p.x , p.y);		
	//	wdw_create_marker = wdwAddMarker(point.lon, point.lat, 0, "", wdw_domain_staticUri+"/img/marker/marker-new.png");
	//	wdw_create_marker = wdwAddMarker(lonlat.lat, lonlat.lon, 0, "", wdw_domain_staticUri+"/img/marker/marker-new.png");
	}
	wdw_create_marker = wdwAddMarker(lonlat.lat, lonlat.lon, 0, "", wdw_create_marker_uri ? wdw_create_marker_uri : wdw_domain_staticUri+"/img/marker/marker-new.png");
	
	document.forms.bmsmessagecreateform.lat.value = lonlat.lat;
	document.forms.bmsmessagecreateform.lon.value = lonlat.lon;
	document.forms.bmsmessagecreateform.zoom.value = map.getZoom();
	document.forms.bmsmessagecreateform.address.value = '';
	
	$.getJSON('/bmsapi/get_domain', {'lat': lonlat.lat, 'long': lonlat.lon, 'appid': wdw_appid}, 
		function(data){
			if (data.isDefaultRecipient) {
				$('#bms-responsible-name-default').show();
			} else {
				$('#bms-responsible-name-default').hide();
			}
			if (data.domainid != wdw_domainid) {
				$('#bms-different-domain-container').show();
				$('#bms-create-form-container').hide();
				$('#bms-different-domain-name').text(data.name);
				$('#bms-different-domain-uri').attr('href',data.domainuri);
			} else {
				$('#bms-different-domain-container').hide();
				$('#bms-create-form-container').show();
				$('#bms-responsible-name').text(data.name);
// Wird nicht benötigt, da dann ja der Link zur richtigen Domain angezeigt wird.
//				var types = data.types;
//				var options="";
//      			for (var i = 0; i < types.length; i++) {
//        			options += '<option value="' + types[i][0] + '">' + types[i][1] + '</option>';
//      			}
//      			$("#bms-messagetype").html(options);
			}
		});
}

function wdwShowArea(wkt) {
	var in_options = {
                'internalProjection': map.getProjectionObject(),
                'externalProjection': new OpenLayers.Projection("EPSG:4326")
            };   	
    var format = new OpenLayers.Format.WKT(in_options)
	wdw_osm_feature_layer.removeAllFeatures();
	var feature = format.read(wkt);
	if (feature) {
		wdw_osm_feature_layer.addFeatures(feature);
	}
}

var old_x = false;
var old_y = false;
function wdwEnableMapZoom(event){
	// Check existence of event.
	if(!event){
		if(window.event){
			// The event could be stored in the browser window.
			event = window.event;
		}else{
			// Bad luck. There is no event, so just gracefully exit.
			return;
		}
	}
	// Only act if WheelZoom is disabled.
	if(nav_control && !nav_control.zoomWheelEnabled){ 
		// If the mouse was previously outside the map.
		if(!old_x && !old_y){
			old_x = event.screenX;
			old_y = event.screenY;
		}
		new_x = event.screenX;
		new_y = event.screenY;
		// Obtain pixels moved from first position on screen
		diff_x = Math.abs(old_x - new_x);
		diff_y = Math.abs(old_y - new_y);
		// If mouse moved more than 50px, then enable WheelZoom.
		if(diff_x > 10 || diff_y > 10){
			nav_control.enableZoomWheel();
		}
	}
}

function wdwDisableMapZoom(){
	nav_control.disableZoomWheel();
	old_x = false;
	old_y = false;
}

function wdwMapInit(lat, lon, op, zoom) {
	
	var protocol = 'OSM';
	var tiles_url = "https://osmtiles.werdenktwas.de/tiles/osm-nopoi2/${z}/${x}/${y}.png";
	var max_zoom = 19;
	
	$.ajaxSetup ({ cache: false});
	jQuery.support.cors = true;
	
	if (wdw_bms_map_tiles_url != null)
		tiles_url = wdw_bms_map_tiles_url;
	if(wdw_bms_map_tiles_protocol != null)
		protocol = wdw_bms_map_tiles_protocol;
	if(wdw_bms_map_max_zoom != null)
		max_zoom = wdw_bms_map_max_zoom;
	if(protocol == 'WMS') {
		
		map = new OpenLayers.Map( 'map_canvas' , {
		projection: "EPSG:25832",
		//displayProjection: "EPSG:25832",
		maxResolution: 156543,
		units: 'meters',
		maxExtent: new OpenLayers.Bounds(477683,5543383,490440,5554383),
		restrictedExtent: new OpenLayers.Bounds(477683,5543383,490440,5554383),
		eventListeners: {
			"moveend": wdwMapEvent
			//,"zoomend": wdwMapEvent // not required, moveend fires on zoom
		}
		});
		nav_control = map.getControlsByClass('OpenLayers.Control.Navigation')[0];
		nav_control.disableZoomWheel();
		
		map.events.register('zoomend', this, function (event) { if( map.getZoom() < 13) { map.zoomTo(13);	}});

		wdw_osm_layer = new OpenLayers.Layer.WMS("Default", tiles_url, {},{transitionEffect: 'resize', "numZoomLevels": max_zoom});
/*		map.addLayer(wdw_osm_layer);
map.setCenter(new OpenLayers.LonLat(487683, 5593383), 14);
		return 1;*/
	} else {
		map = new OpenLayers.Map("map_canvas",{eventListeners: {
				"moveend": wdwMapEvent
				//,"zoomend": wdwMapEvent // not required, moveend fires on zoom
			    }}
		);
		nav_control = map.getControlsByClass('OpenLayers.Control.Navigation')[0];
		nav_control.disableZoomWheel();

		 wdw_osm_layer = new OpenLayers.Layer.OSM("Default", tiles_url, {"numZoomLevels": max_zoom});
	}
	
	wdw_osm_layer.attribution = "";
	map.addLayer(wdw_osm_layer, { controls: [] });
	wdw_osm_feature_layer = new OpenLayers.Layer.Vector('vectors');
	map.addLayer(wdw_osm_feature_layer);
	map.addControl(new OpenLayers.Control.PanZoom());
	googlemap=map; 
	
	markersLayer = new OpenLayers.Layer.Markers( "Markers" );
	map.addLayer(markersLayer);
	
	$('#map_canvas').mouseleave(wdwDisableMapZoom);
	
	var lonLat = new OpenLayers.LonLat( lon, lat )
	      .transform(
	        new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
	        map.getProjectionObject() // to Spherical Mercator Projection
	      );
	map.setCenter (lonLat, zoom);
	
	// Load markers and settings.
	wdwLoadMarker();
		
	if(op == 2) {
		// bms create, select point on map
        var click = new OpenLayers.Control.Click();
        map.addControl(click);
        click.activate();
	}
	// TODO fix the bug in OpenLayers that returns wrong values for the click position in IE7
	if(jQuery.browser.msie && jQuery.browser.version < 8) {
		wdw_click_offset_x = 0;
	}

	if(wdw_set_create_marker) {
		wdw_create_marker = wdwAddMarker(lat, lon, 0, "",  wdw_domain_staticUri+"/img/marker/marker-new.png");
	}
} 

function wdwReloadMarkers(params) {
	// only reload markers if an uri was provided
	if(wdw_reload_uri == '') {
		wdw_loading = 0;
		return;
	}

	// save last params in case of panning and zooming
	wdw_last_params = params;

	// determine extent of current viewport
	var bounds = map.getExtent().clone();
	bounds = bounds.transform(
			map.getProjectionObject(), // to Spherical Mercator Projection
			new OpenLayers.Projection("EPSG:4326") // transform from WGS 1984
		);
	// add extent to params
	//alert (bounds.left + " " + bounds.right);
	params['zoom'] = map.getZoom();
	params['bottom'] = bounds.left;
	params['top'] = bounds.right;
	params['left'] = bounds.bottom;
	params['right'] = bounds.top;

	// show loading indicator
	$('#wdw-map-loading-indicator').css('visibility','visible');
	// load markers
	$.ajaxSetup({ cache: false });
	jQuery.support.cors = true;
	$.getJSON(URI(wdw_reload_uri).host("").scheme(""), params, 
		function(data){
			wdwReplaceMarkers(data);
			$('#wdw-map-loading-indicator').css('visibility','hidden');
			if(wdw_loading > 1) {
				// map has changed again in between, reload
				wdw_loading = 0;
				window.setTimeout('wdwMapEvent()', 4);
			} else {
				// stop reloading markers
				wdw_loading = 0;
			}
		});
}

function wdwBmsCreateUriFromParams() {
	var create_params = new Object();
	create_params['lon'] = (wdw_last_params['top']+wdw_last_params['bottom'])/2;
	create_params['lat'] = (wdw_last_params['left']+wdw_last_params['right'])/2;
	create_params['zoom'] = wdw_last_params['zoom'];
	return '/bms/create?'+$.param(create_params);
}

function wdwReplaceMarkers(marker_list) {
	markersLayer.clearMarkers();
	wdw_current_markers = new Object();
	for (var i = 0; i < marker_list.length; i++) {
		wdw_current_markers[marker_list[i].msgid] = wdwAddMarker(marker_list[i].lat, marker_list[i].lon, marker_list[i].msgid, marker_list[i].html, marker_list[i].iconurl);
	}
	if(wdw_create_marker) {
		markersLayer.addMarker(wdw_create_marker);
	}
}
function wdwUpdateMarkers(marker_list) {
	for(key in marker_list) {
		var marker = marker_list[key];
		if(marker.msgid in wdw_current_markers) {
			markersLayer.removeMarker(wdw_current_markers[msgid]);
			wdw_current_markers[msgid] = wdwAddMarker(marker.lat, marker.lon, marker.msgid, marker.html, marker.iconurl);
		}
	}
}
function wdwMapEvent(event){
	if(wdw_loading == 0) {
		wdw_loading++;
		wdwReloadMarkers(wdw_last_params);
	} else {
		wdw_loading++;
	}
}
function wdwAddMarker(lat, lon, msgid, html, iconurl, heatmap) {
	var point = new OpenLayers.LonLat(lon ,lat).transform(
			new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
			map.getProjectionObject() // to Spherical Mercator Projection
		);
	if (map.projection == "EPSG:25832") {
		Proj4js.libPath = "http://wdwp.s3.amazonaws.com/r/028/static/js/";
		var source = new Proj4js.Proj('EPSG:4326'); 
		var target = new Proj4js.Proj('EPSG:25832'); 
		//alert(" vorher " + lat + "," + lon);
		var p = new Proj4js.Point(lon + "," + lat);  
		var p = Proj4js.transform(source, target, p)
		//alert(" nachher	" + p.toShortString());
		point= new OpenLayers.LonLat(p.x , p.y);		
	}
	
	var size = new OpenLayers.Size(30,38);
	var offset = new OpenLayers.Pixel(-15,-38);
	if(heatmap){
		size = new OpenLayers.Size(12,12);
		offset = new OpenLayers.Pixel(-6,-6);
	}
	if(iconurl == "http://maps.google.com/mapfiles/marker.png" || 
	   iconurl == "http://maps.google.com/mapfiles/marker_green.png" ){
		size = new OpenLayers.Size(20,34);
		offset = new OpenLayers.Pixel(-10,-24);
	}
	var icon = new OpenLayers.Icon(iconurl, size, offset);
	var marker = new OpenLayers.Marker(point,icon);
	var popup = new OpenLayers.Popup.FramedCloud("msgid-"+msgid,
			point,
            new OpenLayers.Size(200,200),
            html,
            null, 
            true);
	if(html != null) {
		var markerClick = function (evt) {
			if(wdw_current_popup) {
				wdw_current_popup.hide();
			}
	        if (this.pop == null) {
	            this.pop = popup;
	            map.addPopup(this.pop);
	            this.pop.show();
	        } else {
	            this.pop.toggle();
	        }
	        wdw_current_popup = this.pop;
	        OpenLayers.Event.stop(evt);
	    };
		marker.events.register('mousedown', marker, markerClick);
	}
	markersLayer.addMarker(marker);

	// add marker to list of currently active markers
	wdw_current_markers[msgid] = marker;
	
	return marker;
}

function getgooglemap(){
	return (googlemap);
}


function searchAddress(address) {
    $.getJSON(URI(wdw_searchAddress_uri).host("").scheme(""), {q :address} , function(data) {
    
    $('#bmsmessagecreateform input[name=search]').val(address);
    	
    if (data.results.length>0) {
	    var lonLat = new OpenLayers.LonLat( data.results[0].geometry.location.lng, data.results[0].geometry.location.lat )
	             .transform(
	             new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
	             map.getProjectionObject() // to Spherical Mercator Projection
	    );
		/*if (map.projection == "EPSG:25832") {
			lonLat= new OpenLayers.LonLat(lonLat.lat , lonLat.lon).transform(
				new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
				new OpenLayers.Projection("EPSG:900913") // to Spherical Mercator Projection
			);	
			lonLat= new OpenLayers.LonLat(lonLat.lat  - 500000, lonLat.lon);
			alert("searchAdress " + lonLat.lat + " " + lonLat.lon);
		}*/
	    map.setCenter (lonLat, 17);
	    var lonLat2 = new OpenLayers.LonLat( data.results[0].geometry.location.lng, data.results[0].geometry.location.lat );
		/*if (map.projection == "EPSG:25832") {
			lonLat2= new OpenLayers.LonLat(lonLat2.lat , lonLat2.lon).transform(
				new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
				new OpenLayers.Projection("EPSG:900913") // to Spherical Mercator Projection
			);	
			lonLat2= new OpenLayers.LonLat(lonLat2.lat  - 500000, lonLat2.lon);
		}*/	
	    //wdw_create_marker = wdwAddMarker(lonLat2.lat, lonLat2.lon, 0, "",  wdw_domain_staticUri+"/img/marker/marker-new.png");
	    
	    wdwMapClicked(lonLat2,map.getPixelFromLonLat(lonLat2));
    } else {
    	alert("Ort nicht gefunden");
    }                                                                       
    });    
    
}