var map = null;
$(document).ready(function() {

	//Turn of Alpha-PNG transparency to cope with performance problems in IE6
    //OpenLayers.Util.alphaHack();
    Hydro.Map.setMap();
    Hydro.Map.Tools();
    Hydro.Application.setText();
    Hydro.Application.getURLParam();
    var ie6 = false;
    
    //If the browser is IE6
    if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //test for MSIE x.x;
		 var ieversion=new Number(RegExp.$1);
		 
		 if(ieversion == "6.0"){
			 ie6 = true;
		 }
	}    
    
    //To force IE6 to show the loading image it is necessary to use a timeout
    if(ie6)
    {
    	document.getElementById('loadingCircle').style.visibility = 'visible';
    	setTimeout("Hydro.Map.showRssWrapper()", 500);
    }
    else
    {
    	Hydro.Map.showRss("true", "true", "true", "false", "false", "false", "false", "false");
    }
    
    Hydro.Application.Events();
   
    return null;
});

//OpenLayers.Util.alphaHack = function() { return false; } 

Hydro.Application.setText = function(){
	$("#btnDownload").val(Hydro.configPaths.Buttons.DownloadBtn);
	$("#btnSearch").val(Hydro.configPaths.Buttons.SearchBtn);
}



Hydro.Map.showRssWrapper = function(){
	Hydro.Map.showRss("true", "true", "true", "false", "false", "false", "false", "false");
	$("#loadingCircle").hide();
}



//Called on startup to add google as map baselayer.
Hydro.Map.setMap = function() {
	if(map == null){
            map = new OpenLayers.Map('map');
            var bounds = new OpenLayers.Bounds(-2.6806640625,38.72203912287745, 32.9150390625,82.66735162287745);
            //left-bottom=(-2.6806640625,38.72203912287745) right-top=(32.9150390625,82.66735162287745) left=-2.6806640625 bottom=38.72203912287745
            map.setOptions({ restrictedExtent: bounds });
            var gmap = new OpenLayers.Layer.Google(
                    "Google Streets",
                    {numZoomLevels: 12, 'minZoomLevel':4, 'maxZoomLevel':16}
                );
            map.addLayer(gmap);
            Hydro.Map.setCenter();
	}
}



Hydro.Map.Clear = function()
{
	document.getElementById("cityName").value = "";
	Hydro.Map.showMarkers($("#cbxHydro").attr('checked'), $("#cbxUnoX").attr('checked'), $("#cbxBensin").attr('checked'), $("#cbxE85").attr('checked'), $("#cbxDiesel").attr('checked'),  $("#cbxB98").attr('checked'), $("#cbxBVP").attr('checked'), $("#cbxADB").attr('checked'), document.getElementById("cityName").value);
}


Hydro.Application.getURLParam = function(){
	var strReturn = "";
	  var strHref = window.location.href;
	    var bounds = strHref.split('bounds=');
	    if(bounds.length > 1)
	    	Hydro.Map.zoomToBounds(bounds[1]);
	  }
//Called by setMap so the map is centered on Sweden, even called if the searchresult returns empty.
Hydro.Map.setCenter = function(){
	map.setCenter(new OpenLayers.LonLat(15.1171875, 60.69469537287745), 0);
	
}
// Close the result list and popup on click anywhere.
Hydro.Application.checkSearchVisibility = function(e) {
    if(map.popups){
        if(map.popups.length != 0) {
            //map.popups[0].hide();
        }
    }
}
//Registers function to call on document.onclick.
//Several functions can be added.
Hydro.Application.addDocumentClickEvent = function(func) {   
	 var oldonload = window.onload;   
	 if (typeof document.onclick != 'function') {   
	     document.onclick = func;   
	 } 
	 else {   
	     document.onclick = function() {   
	         if (oldonload) {   
	             oldonload();   
	         }   
	         func();   
	     }   
	 }   
}
//Function that disables the enterkey so it isn\u00B4t fires "submit" form instead of search.
Hydro.Application.disableEnterKey = function(e)
{
     var key;
     if(window.event)
          key = window.event.keyCode;     //IE
     else
          key = e.which;     //firefox

     if(key == 13)
          return false;
     else
          return true;
}



Hydro.Map.Tools = function(){
	var pZbar = new OpenLayers.Control.PanZoomBar();
    pZbar.position = new OpenLayers.Pixel(10, 10);
    map.addControl(pZbar);

    var pZ = new OpenLayers.Control.PanZoom({ slideFactor: 100 });
    //pZ.position = new OpenLayers.Pixel(750, 750);
    map.addControl(pZ);
}



Hydro.Map.showMarkers = function(hydro, unoX, bensin, e85, diesel, b98, bvp, adb, searchString){
	searchString = searchString.toLowerCase();
	for(var i=0; i<map.layers.length;i++){
		if(map.layers[i].CLASS_NAME == "OpenLayers.Layer.GeoRSS"){
			for(var j=0;j < map.layers[i].features.length;j++){
				var display = true;
				var featureData = map.layers[i].features[j].data;
				var featureMarker = map.layers[i].features[j].marker;
				
				/*
				if(searchString != "" && featureData.lan.indexOf(searchString) == -1 && featureData.kommun.indexOf(searchString) == -1 && featureData.city.indexOf(searchString) == -1 && featureData.name.indexOf(searchString) == -1)
				{
					display = false;
				}
				*/
				
				if(!hydro && !unoX){
					display = false;
				}
				else if(hydro && !unoX){
					if(featureData.station != "hydro"){
						display = false;
					}		
				}
				else if(!hydro && unoX){
					if(featureData.station != "unox"){
						display = false;
					}
				}
				if(bensin){
					if(featureData.bensin == "Nej"){
						display = false;
					}
				}
				if(e85){
					if(featureData.e85 == "Nej"){
						display = false;
					}
				}
				if(diesel){
					if(featureData.diesel == "Nej"){
						display = false;
					}
				}
				if(b98){
					if(featureData.b98 == "Nej"){
						display = false;
					}
				}
				if(bvp){
					if(featureData.bvp == "Nej"){
						display = false;
					}
				}
				if(adb){
					if(featureData.adb == "Nej"){
						display = false;
					}
				}
				map.layers[i].features[j].marker.display(display);
				}
			}
		}
	}

//All events that occurs is registered below. Ex. User clicks in a checkbox.
Hydro.Application.Events = function(){
	$("#noResultDiv").hide();
	 //$("#loadingCircle").hide();
	$("#cityName").click(function(){$("#noResultDiv").hide();});
	$("#cbxHydro").click(function(){
		Hydro.Map.showMarkers($("#cbxHydro").attr('checked'), $("#cbxUnoX").attr('checked'), $("#cbxBensin").attr('checked'), $("#cbxE85").attr('checked'), $("#cbxDiesel").attr('checked'), $("#cbxB98").attr('checked'), $("#cbxBVP").attr('checked'), $("#cbxADB").attr('checked'), document.getElementById("cityName").value);
	});
	$("#cbxUnoX").click(function(){
		Hydro.Map.showMarkers($("#cbxHydro").attr('checked'), $("#cbxUnoX").attr('checked'), $("#cbxBensin").attr('checked'), $("#cbxE85").attr('checked'), $("#cbxDiesel").attr('checked'), $("#cbxB98").attr('checked'), $("#cbxBVP").attr('checked'), $("#cbxADB").attr('checked'), document.getElementById("cityName").value);
	});
	$("#cbxBensin").click(function(){
		Hydro.Map.showMarkers($("#cbxHydro").attr('checked'), $("#cbxUnoX").attr('checked'), $("#cbxBensin").attr('checked'), $("#cbxE85").attr('checked'), $("#cbxDiesel").attr('checked'), $("#cbxB98").attr('checked'), $("#cbxBVP").attr('checked'), $("#cbxADB").attr('checked'), document.getElementById("cityName").value);
	});
	$("#cbxE85").click(function(){
		Hydro.Map.showMarkers($("#cbxHydro").attr('checked'), $("#cbxUnoX").attr('checked'), $("#cbxBensin").attr('checked'), $("#cbxE85").attr('checked'), $("#cbxDiesel").attr('checked'), $("#cbxB98").attr('checked'), $("#cbxBVP").attr('checked'), $("#cbxADB").attr('checked'), document.getElementById("cityName").value);
	});
	$("#cbxDiesel").click(function(){
		Hydro.Map.showMarkers($("#cbxHydro").attr('checked'), $("#cbxUnoX").attr('checked'), $("#cbxBensin").attr('checked'), $("#cbxE85").attr('checked'), $("#cbxDiesel").attr('checked'), $("#cbxB98").attr('checked'), $("#cbxBVP").attr('checked'), $("#cbxADB").attr('checked'), document.getElementById("cityName").value);
	});
	$("#cbxB98").click(function(){
		Hydro.Map.showMarkers($("#cbxHydro").attr('checked'), $("#cbxUnoX").attr('checked'), $("#cbxBensin").attr('checked'), $("#cbxE85").attr('checked'), $("#cbxDiesel").attr('checked'), $("#cbxB98").attr('checked'), $("#cbxBVP").attr('checked'), $("#cbxADB").attr('checked'), document.getElementById("cityName").value);
	});
	$("#cbxBVP").click(function(){
		Hydro.Map.showMarkers($("#cbxHydro").attr('checked'), $("#cbxUnoX").attr('checked'), $("#cbxBensin").attr('checked'), $("#cbxE85").attr('checked'), $("#cbxDiesel").attr('checked'), $("#cbxB98").attr('checked'), $("#cbxBVP").attr('checked'), $("#cbxADB").attr('checked'), document.getElementById("cityName").value);
	});
	$("#cbxADB").click(function(){
		Hydro.Map.showMarkers($("#cbxHydro").attr('checked'), $("#cbxUnoX").attr('checked'), $("#cbxBensin").attr('checked'), $("#cbxE85").attr('checked'), $("#cbxDiesel").attr('checked'), $("#cbxB98").attr('checked'), $("#cbxBVP").attr('checked'), $("#cbxADB").attr('checked'), document.getElementById("cityName").value);
	});
	Hydro.Application.addDocumentClickEvent(Hydro.Application.checkSearchVisibility);
	$("#cityName").keyup(function(event){
        if (event.keyCode == 13) {
        	Hydro.Map.getBounds();
        }
	});
}
function stopSubmit() {
	return false;
	}
//Performs the ajax get for boundingbox upon search.
Hydro.Map.getBounds = function(){
	$("#loadingCircle").show();
		if(document.getElementById("cityName").value.length > 0){	
			$cityName = encodeURIComponent(document.getElementById("cityName").value);
			$businessArea = encodeURIComponent(document.getElementById("ba").value);
			$.post(Hydro.configPaths.ServletPath.SearchServlet, {cityName: $cityName, businessArea: $businessArea}, Hydro.Map.handleSearchResult,'html');
			//alert($businessArea);
		}
		else
		{
			Hydro.Map.showMarkers($("#cbxHydro").attr('checked'), $("#cbxUnoX").attr('checked'), $("#cbxBensin").attr('checked'), $("#cbxE85").attr('checked'), $("#cbxDiesel").attr('checked'), $("#cbxB98").attr('checked'), $("#cbxBVP").attr('checked'), $("#cbxADB").attr('checked'), document.getElementById("cityName").value);
			Hydro.Map.setCenter();
			 $("#loadingCircle").hide();
		}
}

//This function handles the adding of GeoRSS, removes the old layer aswell if a new search is made.
Hydro.Map.showRss = function(hydro, unoX, bensin, e85, diesel, b98, bvp, adb){
//	hydro = true;
//	unoX = true;
	
	
	//Check if the browser is IE6
	if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //test for MSIE x.x;
		 var ieversion=new Number(RegExp.$1);
		 
		 //alert('You are using IE' + ieversion);
	}
	
	if(map == null){
		Hydro.Map.setMap();
	}
	var sPath;
	for(var i=0; i<map.layers.length;i++){
		if(map.layers[i].CLASS_NAME == "OpenLayers.Layer.GeoRSS"){
			map.removeLayer(map.layers[i]);
			//sPath = Hydro.configPaths.ServletPath.GeoRssServlet +'?' + 'hydro=' + hydro + '&unox=' + unoX + '&bensin=' + bensin + '&e85=' + e85 + '&diesel=' + diesel;
		}
	}
	businessArea = encodeURIComponent(document.getElementById("ba").value);
	//alert(businessArea);
	sPath = Hydro.configPaths.ServletPath.GeoRssServlet +escape('?' + 'businessArea=' + businessArea + '&hydro=' + hydro + '&unox=' + unoX + '&bensin=' + bensin + '&e85=' + e85 + '&diesel=' + diesel + '&b98=' + b98 + '&bvp=' + bvp + '&adb=' + adb);
	//var newIcon = new OpenLayers.Icon("img/logo_hydro.gif", new OpenLayers.Size(10,10));
	
	var size = new OpenLayers.Size(12,12);
	//31,43
	var calculateOffset = function(size) {
	return new OpenLayers.Pixel(-(size.w/2), -size.h); 
	};
	var newIcon = new OpenLayers.Icon("img/logo_hydro.gif",
	size, null, calculateOffset);
	//var tempMarker = new OpenLayers.Marker(new OpenLayers.LonLat(x, y), icon);
	
	var newRSSLayer = new OpenLayers.Layer.GeoRSS('Stationer', sPath, { 'icon': newIcon, 'useFeedTitle': false });
	map.addLayer(newRSSLayer);
	$("#loadingCircle").hide();
}

//Called by getBounds upon searchanswer from serverside, also passes the coords into zoomToBounds function if ajax is successful.
Hydro.Map.handleSearchResult = function(sText, sStatus) { 
	if (sStatus == "success") {
        Hydro.Map.zoomToBounds(sText);
    } else {
        alert('Error occured in ajaxrequest!');
    }
}

//Zoomfunction that centers the map when user searches a city.
Hydro.Map.zoomToBounds = function(bounds){
	if(map == null){
		Hydro.Map.setMap();
	}
	if(bounds.length > 0){
		var boundsList = bounds.split('&'); 
		if(boundsList[3] == "0.0"){
			Hydro.Map.setCenter();
			$("#noResultDiv").show();
			 $("#loadingCircle").hide();
			
		}
		else if(boundsList[0] > 0){
			$("#noResultDiv").hide();
			var bounds = new OpenLayers.Bounds(boundsList[0], boundsList[1], boundsList[2], boundsList[3]);
			map.zoomToExtent(bounds);
			
			//Check if the bounding box really fits within the zoom level set by OpenLayers.
			//If not, zoom out one level
			var extent = map.getExtent();
			
			if(bounds.getWidth() > extent.getWidth() || bounds.getHeight() > extent.getHeight())
			{
				map.zoomOut();
			}
			
			 $("#loadingCircle").hide();
		}
	}
}

//Performs submit when user clicks Download.
Hydro.Application.formSubmit = function(val){
	if(val == "Download"){
		document.forms[0].action=Hydro.configPaths.ServletPath.PoiController;
		document.forms[0].submit();
	}
}