// ELabel.js 

//

//   This Javascript is provided by Mike Williams

//   Blackpool Community Church Javascript Team

//   http://www.commchurch.freeserve.co.uk/   

//   http://econym.googlepages.com/index.htm

//

//   This work is licenced under a Creative Commons Licence

//   http://creativecommons.org/licenses/by/2.0/uk/

//

// Version 0.2      the .copy() parameters were wrong

// version 1.0      added .show() .hide() .setContents() .setPoint() .setOpacity() .overlap

// version 1.1      Works with GMarkerManager in v2.67, v2.68, v2.69, v2.70 and v2.71

// version 1.2      Works with GMarkerManager in v2.72, v2.73, v2.74 and v2.75

// version 1.3      add .isHidden()

// version 1.4      permit .hide and .show to be used before addOverlay()

// version 1.5      fix positioning bug while label is hidden

// version 1.6      added .supportsHide()

// version 1.7      fix .supportsHide()





      function ELabel(point, html, classname, pixelOffset, percentOpacity, overlap) {

        // Mandatory parameters

        this.point = point;

        this.html = html;

        

        // Optional parameters

        this.classname = classname||"";

        this.pixelOffset = pixelOffset||new GSize(0,0);

        if (percentOpacity) {

          if(percentOpacity<0){percentOpacity=0;}

          if(percentOpacity>100){percentOpacity=100;}

        }        

        this.percentOpacity = percentOpacity;

        this.overlap=overlap||false;

        this.hidden = false;

      } 

      

      ELabel.prototype = new GOverlay();



      ELabel.prototype.initialize = function(map) {

        var div = document.createElement("div");

        div.style.position = "absolute";

        div.innerHTML = '<div class="' + this.classname + '">' + this.html + '</div>' ;

        map.getPane(G_MAP_FLOAT_SHADOW_PANE).appendChild(div);

        this.map_ = map;

        this.div_ = div;

        if (this.percentOpacity) {        

          if(typeof(div.style.filter)=='string'){div.style.filter='alpha(opacity:'+this.percentOpacity+')';}

          if(typeof(div.style.KHTMLOpacity)=='string'){div.style.KHTMLOpacity=this.percentOpacity/100;}

          if(typeof(div.style.MozOpacity)=='string'){div.style.MozOpacity=this.percentOpacity/100;}

          if(typeof(div.style.opacity)=='string'){div.style.opacity=this.percentOpacity/100;}

        }

        if (this.overlap) {

          var z = GOverlay.getZIndex(this.point.lat());

          this.div_.style.zIndex = z;

        }

        if (this.hidden) {

          this.hide();

        }

      }



      ELabel.prototype.remove = function() {

        this.div_.parentNode.removeChild(this.div_);

      }



      ELabel.prototype.copy = function() {

        return new ELabel(this.point, this.html, this.classname, this.pixelOffset, this.percentOpacity, this.overlap);

      }



      ELabel.prototype.redraw = function(force) {

        var p = this.map_.fromLatLngToDivPixel(this.point);

        var h = parseInt(this.div_.clientHeight);

        this.div_.style.left = (p.x + this.pixelOffset.width) + "px";

        this.div_.style.top = (p.y +this.pixelOffset.height - h) + "px";

      }



      ELabel.prototype.show = function() {

        if (this.div_) {

          this.div_.style.display="";

          this.redraw();

        }

        this.hidden = false;

      }

      

      ELabel.prototype.hide = function() {

        if (this.div_) {

          this.div_.style.display="none";

        }

        this.hidden = true;

      }

      

      ELabel.prototype.isHidden = function() {

        return this.hidden;

      }

      

      ELabel.prototype.supportsHide = function() {

        return true;

      }



      ELabel.prototype.setContents = function(html) {

        this.html = html;

        this.div_.innerHTML = '<div class="' + this.classname + '">' + this.html + '</div>' ;

        this.redraw(true);

      }

      

      ELabel.prototype.setPoint = function(point) {

        this.point = point;

        if (this.overlap) {

          var z = GOverlay.getZIndex(this.point.lat());

          this.div_.style.zIndex = z;

        }

        this.redraw(true);

      }

      

      ELabel.prototype.setOpacity = function(percentOpacity) {

        if (percentOpacity) {

          if(percentOpacity<0){percentOpacity=0;}

          if(percentOpacity>100){percentOpacity=100;}

        }        

        this.percentOpacity = percentOpacity;

        if (this.percentOpacity) {        

          if(typeof(this.div_.style.filter)=='string'){this.div_.style.filter='alpha(opacity:'+this.percentOpacity+')';}

          if(typeof(this.div_.style.KHTMLOpacity)=='string'){this.div_.style.KHTMLOpacity=this.percentOpacity/100;}

          if(typeof(this.div_.style.MozOpacity)=='string'){this.div_.style.MozOpacity=this.percentOpacity/100;}

          if(typeof(this.div_.style.opacity)=='string'){this.div_.style.opacity=this.percentOpacity/100;}

        }

      }



      ELabel.prototype.getPoint = function() {

        return this.point;

      }

      ELabel.prototype.U = function() {

        return this.point;

      }

      ELabel.prototype.V = function() {

        return this.point;

      }

      ELabel.prototype.W = function() {

        return this.point;

      }

      ELabel.prototype.X = function() {

        return this.point;

      }

      ELabel.prototype.Y = function() {

        return this.point;

      }

      ELabel.prototype.Z = function() {

        return this.point;

      }