dojo.provide("gmaps");
dojo.declare("gmaps.GoogleMapsLayer",esri.layers.Layer,{constructor:function(a){a=a||{};this.tileInfo=new esri.layers.TileInfo({rows:256,cols:256,dpi:96,origin:{x:-2.0037508342787E7,y:2.0037508342787E7},spatialReference:{wkid:102100},lods:[{level:1,resolution:78271.5169639999,scale:2.95828763795777E8},{level:2,resolution:39135.7584820001,scale:1.47914381897889E8},{level:3,resolution:19567.8792409999,scale:7.3957190948944E7},{level:4,resolution:9783.93962049996,scale:3.6978595474472E7},{level:5,resolution:4891.96981024998,
scale:1.8489297737236E7},{level:6,resolution:2445.98490512499,scale:9244648.868618},{level:7,resolution:1222.99245256249,scale:4622324.434309},{level:8,resolution:611.49622628138,scale:2311162.217155},{level:9,resolution:305.748113140558,scale:1155581.108577},{level:10,resolution:152.874056570411,scale:577790.554289},{level:11,resolution:76.4370282850732,scale:288895.277144},{level:12,resolution:38.2185141425366,scale:144447.638572},{level:13,resolution:19.1092570712683,scale:72223.819286},{level:14,
resolution:9.55462853563415,scale:36111.909643},{level:15,resolution:4.77731426794937,scale:18055.954822},{level:16,resolution:2.38865713397468,scale:9027.977411},{level:17,resolution:1.19432856685505,scale:4513.988705},{level:18,resolution:0.597164283559817,scale:2256.994353},{level:19,resolution:0.298582141647617,scale:1128.497176}]});this.opacity=a.opacity||1;this._options=a;this._gmap=null;this.loaded=true},setMapTypeId:function(a){if(this._gmap)this._gmap.setMapTypeId(a);else this._options.mapTypeId=
a},getGMap:function(){return this._gmap},_setMap:function(a,b){this._map=a;var c=document.createElement("div");if(this._options.id)c.id=this.id;dojo.style(c,{position:"absolute",top:"0px",left:"0px",width:(a.width||b.offsetWidth)+"px",height:(a.height||b.offsetHeight)+"px"});b.appendChild(c);this._div=c;this._visibilityChangeHandle=dojo.connect(this,"onVisibilityChange",this,this._visibilityChangeHandler);this._opacityChangeHandle=dojo.connect(this,"onOpacityChange",this,this._onOpacityChangeHandler);
return c},_unsetMap:function(a,b){b&&b.removeChild(this._div);dojo.destroy(this._div);this._gmap=this._div=this._map=null;dojo.disconnect(this._extentChangeHandle);dojo.disconnect(this._panHandle);dojo.disconnect(this._resizeHandle);dojo.disconnect(this._visibilityChangeHandle);dojo.disconnect(this._opacityChangeHandle)},_initGMap:function(){if(window.google&&google.maps){var a=this._esriExtentToLatLngBounds(this._map.extent||this.initialExtent),b=this._map.getLevel(),c={mapTypeId:this._options.mapTypeId||
google.maps.MapTypeId.ROADMAP,disableDefaultUI:true,draggable:false,center:this._options.center||a.getCenter(),zoom:this._options.zoom||b>-1?b:1};c=new google.maps.Map(this._div,c);b<0&&c.fitBounds(a);this._gmap=c;this._extentChangeHandle=dojo.connect(this._map,"onExtentChange",this,this._extentChangeHandler);this._panHandle=dojo.connect(this._map,"onPan",this,this._panHandler);this._resizeHandle=dojo.connect(this._map,"onResize",this,this._resizeHandler);this.onLoad(this)}else if(gmaps.onApiLoad)dojo.connect(gmaps,
"onApiLoad",this,this._initGMap);else{gmaps.onApiLoad=function(){};dojo.connect(gmaps,"onApiLoad",this,this._initGMap);a=document.createElement("script");a.type="text/javascript";b=window.location.protocol+"//maps.google.com/maps/api/js?sensor="+(this._options.sensor?"true":"false");if(this._options.client)b+="&client="+this._options.client;if(this._options.version)b+="&v"+this._options.version;b+="&callback=gmaps.onApiLoad";a.src=b;document.getElementsByTagName("head").length>0?document.getElementsByTagName("head")[0].appendChild(a):
document.body.appendChild(a)}},_opacityChangeHandler:function(a){if(this._div){a=Math.min(Math.max(a,0),1);var b=this._div.style;if(typeof b.opacity!=="undefined")b.opacity=a;else if(typeof b.filters!=="undefined")b.filters.alpha.opacity=Math.floor(100*a);else if(typeof b.filter!=="undefined")b.filter="alpha(opacity:"+Math.floor(a*100)+")"}},_visibilityChangeHandler:function(a){if(a){esri.show(this._div);if(this._gmap){google.maps.event.trigger(this._gmap,"resize");this._setExtent(this._map.extent);
this._panHandle=this._panHandle||dojo.connect(this._map,"onPan",this,"_panHandler");this._extentChangeHandle=this._extentChangeHandle||dojo.connect(this._map,"onExtentChange",this,"_extentChangeHandler")}else this._initGMap()}else if(this._div){esri.hide(this._div);if(this._panHandle){dojo.disconnect(this._panHandle);this._panHandle=null}if(this._extentChangeHandle){dojo.disconnect(this._extentChangeHandle);this._extentChangeHandle=null}}},_resizeHandler:function(){dojo.style(this._div,{width:this._map.width+
"px",height:this._map.height+"px"});google.maps.event.trigger(this._gmap,"resize")},_extentChangeHandler:function(a,b,c){c?this._setExtent(a):this._gmap.setCenter(this._esriPointToLatLng(a.getCenter()))},_panHandler:function(a){this._gmap.setCenter(this._esriPointToLatLng(a.getCenter()))},_setExtent:function(a){var b=this._map.getLevel();if(b>=0){this._gmap.setCenter(this._esriPointToLatLng(a.getCenter()));this._gmap.setZoom(b)}else this._gmap.fitBounds(this._esriExtentToLatLngBounds(a))},_esriPointToLatLng:function(a){a=
esri.geometry.webMercatorToGeographic(a);return new google.maps.LatLng(a.y,a.x)},_esriExtentToLatLngBounds:function(a){a=esri.geometry.webMercatorToGeographic(a);return new google.maps.LatLngBounds(new google.maps.LatLng(a.ymin,a.xmin,true),new google.maps.LatLng(a.ymax,a.xmax,true))}});