// Version 0.0  13/07/2007 Initial version
// Version 0.1  14/07/2007 Bugfix: Was failing to apply the position offset.
// Version 0.2  30/07/2007 Bugfix: Wasn't clearingout the old contents.
// Version 0.3  21/09/2007 Added noCloseOnClick parameter
// version 0.4  25/12/2007 Bugfix: Problem with offset

      function EBubble(map,image,size,insize,inset,anchor,noCloseOnClick) {
        // parameters
        var that=this;
        this.map = map;
        this.image=image;
        this.size=size;
        this.insize=insize;
        this.inset=inset;
        this.anchor=anchor;
        this.noCloseOnClick=noCloseOnClick;
        // internal variables
        this.visible = false;
        // browser - specific variables
        this.ie = false;
        var agent = navigator.userAgent.toLowerCase();
        if ((agent.indexOf("msie") > -1) && (agent.indexOf("opera") < 1)){ this.ie = true} else {this.ie = false}

        this.div1 = document.createElement("div");
        this.div1.style.position = "absolute";
        this.div1.style.display="none";
        document.body.appendChild(this.div1);

        if (this.ie && this.image.indexOf(".png")>-1) {
					// MH20080325 Fix voor relatieve paden, bv 'images/test.png', de base kan dmv de base tag worden resolved
					var imageForAlphaLoader = this.image;
					if(
						this.image.substr(0,1) != '.' && 
						this.image.substr(0,1) != '/' && 
						this.image.toLowerCase().substr(0,5) != 'http:' &&
						document.getElementsByTagName('base').length > 0
						)
					{
						imageForAlphaLoader = document.getElementsByTagName('base')[0].getAttribute('href') + this.image;
					}
          var loader = "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + imageForAlphaLoader + "', sizingMethod='scale');";
          this.div1.innerHTML = '<div style="height:' +this.size.height+ 'px; width:'+this.size.width+'px; ' +loader+ '" ></div>';
        } else {
          this.div1.innerHTML = '<img src="' + this.image + '" width="' + this.size.width +'" height="' + this.size.height +'">';
        }
        
        // === Close the bubble if the map moves ===
        GEvent.addListener(map, "dragstart", function() {
          that.hide();
        } );
        GEvent.addListener(map, "moveend", function() {
          that.hide();
        } );
        // === Listen for clicks and mousedowns ===
        GEvent.addDomListener(this.div1,"click", function() {
          if (!that.noCloseOnClick) that.hide();
          GEvent.trigger(that,"click");
        });
        GEvent.addDomListener(this.div1,"mousedown", function() {
          if (!that.noCloseOnClick) that.hide();
          GEvent.trigger(that,"click");
        });

        this.div2 = document.createElement("div");
        this.div1.appendChild(this.div2);
        this.div2.style.position = "absolute";
        this.div2.style.left = this.inset.x + "px"; 
        this.div2.style.top = this.inset.y + "px";
        this.div2.style.width = this.insize.width + "px";
        this.div2.style.height = this.insize.height + "px";

      } 
      
      
      function offsetLeft(el)
	  {
	    x = el.offsetLeft;
	    for (e = el.offsetParent; e; e = e.offsetParent)
		    x += e.offsetLeft;
	    return x;
	  } 
    	
	  function offsetTop(el)
	  {
	    y = el.offsetTop;
	    for (e = el.offsetParent; e; e = e.offsetParent)
		    y += e.offsetTop;
	    return y;
	  }

	  EBubble.prototype.openOnMap = function(point, html, offset) {
	      this.offset = offset || new GPoint(0, 0);
	      this.point = point;


	      //div2.style.backgroundColor = "#0000ff"; 
	      this.div2.innerHTML = html;

	      // pixel relative to map world
	      var p = this.map.fromLatLngToDivPixel(point);

	      // map world relative to map container
	      var dragObject = this.map.getPane(G_MAP_MAP_PANE).parentNode;
	      var x = p.x + parseInt(dragObject.style.left);
	      var y = p.y + parseInt(dragObject.style.top);

	      // map container relative to the page
	      //y += this.map.getContainer().offsetTop;
	      //x += this.map.getContainer().offsetLeft;
	      y += offsetTop(this.map.getContainer());
	      x += offsetLeft(this.map.getContainer());

	      // offset by the requested anchor position
	      y -= this.anchor.y;
	      x -= this.anchor.x;

	      // offset by the specified offset position
	      y -= this.offset.y;
	      x -= this.offset.x;


	      // Apply those values 
	      this.div1.style.left = x + "px";
	      this.div1.style.top = y + "px";

	      // make it visible
	      this.visible = true;
	      this.show();
	  }
      
      EBubble.prototype.openOnMarker = function(marker,html) {
        var vx = marker.getIcon().iconAnchor.x - marker.getIcon().infoWindowAnchor.x;
        var vy = marker.getIcon().iconAnchor.y - marker.getIcon().infoWindowAnchor.y;
        this.openOnMap(marker.getPoint(), html, new GPoint(vx,vy));
      }
      

      EBubble.prototype.show = function() {
        this.div1.style.display="";
        this.div2.style.display="";
        this.visible = true;
      }
      
      EBubble.prototype.hide = function() {
        this.div1.style.display="none";
        //this.div2.style.display="none";
        this.visible = false;
      }
      
      EBubble.prototype.isHidden = function() {
        return !this.visible;
      }
      
      EBubble.prototype.supportsHide = function() {
        return true;
}