Leaflet/dist/leaflet.js

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JavaScript
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2010-09-23 20:56:29 +08:00
/*
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Leaflet, a JavaScript library for mobile-friendly interactive maps. http://leafletjs.com
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(c) 2010-2013, Vladimir Agafonkin, CloudMade
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*/
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(function(t,e,i){var n,o;typeof exports!=i+""?n=exports:(o=t.L,n={},n.noConflict=function(){return t.L=o,this},t.L=n),n.version="0.5.1",n.Util={extend:function(t){var e,i,n,o,s=Array.prototype.slice.call(arguments,1);for(i=0,n=s.length;n>i;i++){o=s[i]||{};for(e in o)o.hasOwnProperty(e)&&(t[e]=o[e])}return t},bind:function(t,e){var i=arguments.length>2?Array.prototype.slice.call(arguments,2):null;return function(){return t.apply(e,i||arguments)}},stamp:function(){var t=0,e="_leaflet_id";return function(i){return i[e]=i[e]||++t,i[e]}}(),limitExecByInterval:function(t,e,n){var o,s;return function a(){var r=arguments;return o?(s=!0,i):(o=!0,setTimeout(function(){o=!1,s&&(a.apply(n,r),s=!1)},e),t.apply(n,r),i)}},falseFn:function(){return!1},formatNum:function(t,e){var i=Math.pow(10,e||5);return Math.round(t*i)/i},splitWords:function(t){return t.replace(/^\s+|\s+$/g,"").split(/\s+/)},setOptions:function(t,e){return t.options=n.extend({},t.options,e),t.options},getParamString:function(t,e){var i=[];for(var n in t)t.hasOwnProperty(n)&&i.push(n+"="+t[n]);return(e&&-1!==e.indexOf("?")?"&":"?")+i.join("&")},template:function(t,e){return t.replace(/\{ *([\w_]+) *\}/g,function(t,i){var n=e[i];if(!e.hasOwnProperty(i))throw Error("No value provided for variable "+t);return n})},isArray:function(t){return"[object Array]"===Object.prototype.toString.call(t)},emptyImageUrl:"data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs="},function(){function e(e){var i,n,o=["webkit","moz","o","ms"];for(i=0;o.length>i&&!n;i++)n=t[o[i]+e];return n}function o(e){var i=+new Date,n=Math.max(0,16-(i-s));return s=i+n,t.setTimeout(e,n)}var s=0,a=t.requestAnimationFrame||e("RequestAnimationFrame")||o,r=t.cancelAnimationFrame||e("CancelAnimationFrame")||e("CancelRequestAnimationFrame")||function(e){t.clearTimeout(e)};n.Util.requestAnimFrame=function(e,s,r,h){return e=n.bind(e,s),r&&a===o?(e(),i):a.call(t,e,h)},n.Util.cancelAnimFrame=function(e){e&&r.call(t,e)}}(),n.extend=n.Util.extend,n.bind=n.Util.bind,n.stamp=n.Util.stamp,n.setOptions=n.Util.setOptions,n.Class=function(){},n.Class.extend=function(t){var e=function(){this.initialize&&this.initialize.apply(this,arguments),this._initHooks&&this.callInitHooks()},i=function(){};i.prototype=this.prototype;var o=new i;o.constructor=e,e.prototype=o;for(var s in this)this.hasOwnProperty(s)&&"prototype"!==s&&(e[s]=this[s]);t.statics&&(n.extend(e,t.statics),delete t.statics),t.includes&&(n.Util.extend.apply(null,[o].concat(t.includes)),delete t.includes),t.options&&o.options&&(t.options=n.extend({},o.options,t.options)),n.extend(o,t),o._initHooks=[];var a=this;return o.callInitHooks=function(){if(!this._initHooksCalled){a.prototype.callInitHooks&&a.prototype.callInitHooks.call(this),this._initHooksCalled=!0;for(var t=0,e=o._initHooks.length;e>t;t++)o._initHooks[t].call(this)}},e},n.Class.include=function(t){n.extend(this.prototype,t)},n.Class.mergeOptions=function(t){n.extend(this.prototype.options,t)},n.Class.addInitHook=function(t){var e=Array.prototype.slice.call(arguments,1),i="function"==typeof t?t:function(){this[t].apply(this,e)};this.prototype._initHooks=this.prototype._initHooks||[],this.prototype._initHooks.push(i)};var s="_leaflet_events";n.Mixin={},n.Mixin.Events={addEventListener:function(t,e,i){var o,a,r,h=this[s]=this[s]||{};if("object"==typeof t){for(o in t)t.hasOwnProperty(o)&&this.addEventListener(o,t[o],e);return this}for(t=n.Util.splitWords(t),a=0,r=t.length;r>a;a++)h[t[a]]=h[t[a]]||[],h[t[a]].push({action:e,context:i||this});return this},hasEventListeners:function(t){return s in this&&t in this[s]&&this[s][t].length>0},removeEventListener:function(t,e,i){var o,a,r,h,l,u=this[s];if("object"==typeof t){for(o in t)t.hasOwnProperty(o)&&this.removeEventListener(o,t[o],e);return this}for(t=n.Util.splitWords(t),a=0,r=t.length;r>a;a++)if(this.hasEventListeners(t[a]))for(h=u[t[a]],l=h.length-1;l>=0;l--)e&&h[l].action!==e||i&&h[l].context!==i||h.splice(l,1);return this},fireEvent:function(t,e){if(!this.hasEventListeners(t))return this;for(var i=n.extend({type:t,target:this},e),o=this[s][t].slice(),a
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},_getZoomForUrl:function(){var t=this.options,e=this._map.getZoom();return t.zoomReverse&&(e=t.maxZoom-e),e+t.zoomOffset},_getTilePos:function(t){var e=this._map.getPixelOrigin(),i=this.options.tileSize;return t.multiplyBy(i).subtract(e)},getTileUrl:function(t){return this._adjustTilePoint(t),n.Util.template(this._url,n.extend({s:this._getSubdomain(t),z:this._getZoomForUrl(),x:t.x,y:t.y},this.options))},_getWrapTileNum:function(){return Math.pow(2,this._getZoomForUrl())},_adjustTilePoint:function(t){var e=this._getWrapTileNum();this.options.continuousWorld||this.options.noWrap||(t.x=(t.x%e+e)%e),this.options.tms&&(t.y=e-t.y-1)},_getSubdomain:function(t){var e=(t.x+t.y)%this.options.subdomains.length;return this.options.subdomains[e]},_createTileProto:function(){var t=this._tileImg=n.DomUtil.create("img","leaflet-tile");t.style.width=t.style.height=this.options.tileSize+"px",t.galleryimg="no"},_getTile:function(){if(this.options.reuseTiles&&this._unusedTiles.length>0){var t=this._unusedTiles.pop();return this._resetTile(t),t}return this._createTile()},_resetTile:function(){},_createTile:function(){var t=this._tileImg.cloneNode(!1);return t.onselectstart=t.onmousemove=n.Util.falseFn,t},_loadTile:function(t,e){t._layer=this,t.onload=this._tileOnLoad,t.onerror=this._tileOnError,t.src=this.getTileUrl(e)},_tileLoaded:function(){this._tilesToLoad--,this._tilesToLoad||this.fire("load")},_tileOnLoad:function(){var t=this._layer;this.src!==n.Util.emptyImageUrl&&(n.DomUtil.addClass(this,"leaflet-tile-loaded"),t.fire("tileload",{tile:this,url:this.src})),t._tileLoaded()},_tileOnError:function(){var t=this._layer;t.fire("tileerror",{tile:this,url:this.src});var e=t.options.errorTileUrl;e&&(this.src=e),t._tileLoaded()}}),n.tileLayer=function(t,e){return new n.TileLayer(t,e)},n.TileLayer.WMS=n.TileLayer.extend({defaultWmsParams:{service:"WMS",request:"GetMap",version:"1.1.1",layers:"",styles:"",format:"image/jpeg",transparent:!1},initialize:function(t,e){this._url=t;var i=n.extend({},this.defaultWmsParams);i.width=i.height=e.detectRetina&&n.Browser.retina?2*this.options.tileSize:this.options.tileSize;for(var o in e)this.options.hasOwnProperty(o)||(i[o]=e[o]);this.wmsParams=i,n.setOptions(this,e)},onAdd:function(t){var e=parseFloat(this.wmsParams.version)>=1.3?"crs":"srs";this.wmsParams[e]=t.options.crs.code,n.TileLayer.prototype.onAdd.call(this,t)},getTileUrl:function(t,e){this._adjustTilePoint(t);var i=this._map,o=i.options.crs,s=this.options.tileSize,a=t.multiplyBy(s),r=a.add(new n.Point(s,s)),h=o.project(i.unproject(a,e)),l=o.project(i.unproject(r,e)),u=[h.x,l.y,l.x,h.y].join(","),c=n.Util.template(this._url,{s:this._getSubdomain(t)});return c+n.Util.getParamString(this.wmsParams,c)+"&bbox="+u},setParams:function(t,e){return n.extend(this.wmsParams,t),e||this.redraw(),this}}),n.tileLayer.wms=function(t,e){return new n.TileLayer.WMS(t,e)},n.TileLayer.Canvas=n.TileLayer.extend({options:{async:!1},initialize:function(t){n.setOptions(this,t)},redraw:function(){var t=this._tiles;for(var e in t)t.hasOwnProperty(e)&&this._redrawTile(t[e])},_redrawTile:function(t){this.drawTile(t,t._tilePoint,this._map._zoom)},_createTileProto:function(){var t=this._canvasProto=n.DomUtil.create("canvas","leaflet-tile");t.width=t.height=this.options.tileSize},_createTile:function(){var t=this._canvasProto.cloneNode(!1);return t.onselectstart=t.onmousemove=n.Util.falseFn,t},_loadTile:function(t,e){t._layer=this,t._tilePoint=e,this._redrawTile(t),this.options.async||this.tileDrawn(t)},drawTile:function(){},tileDrawn:function(t){this._tileOnLoad.call(t)}}),n.tileLayer.canvas=function(t){return new n.TileLayer.Canvas(t)},n.ImageOverlay=n.Class.extend({includes:n.Mixin.Events,options:{opacity:1},initialize:function(t,e,i){this._url=t,this._bounds=n.latLngBounds(e),n.setOptions(this,i)},onAdd:function(t){this._map=t,this._image||this._initImage(),t._panes.overlayPane.appendChild(this._image),t.on("viewreset",this._reset,this),t.options.zoomAnimation&&n.Browser.any3d&&t.on("zoomanim",this._animateZoom,this),this._reset()},onRemove:function(t){t.getPanes().overlay
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var _=n.LineUtil._sqClosestPointOnSegment(t,e,i,!0);o>_&&(o=_,a=n.LineUtil._sqClosestPointOnSegment(t,e,i))}return a&&(a.distance=Math.sqrt(o)),a},getBounds:function(){var t,e,i=new n.LatLngBounds,o=this.getLatLngs();for(t=0,e=o.length;e>t;t++)i.extend(o[t]);return i},_convertLatLngs:function(t){var e,i;for(e=0,i=t.length;i>e;e++){if(n.Util.isArray(t[e])&&"number"!=typeof t[e][0])return;t[e]=n.latLng(t[e])}return t},_initEvents:function(){n.Path.prototype._initEvents.call(this)},_getPathPartStr:function(t){for(var e,i=n.Path.VML,o=0,s=t.length,a="";s>o;o++)e=t[o],i&&e._round(),a+=(o?"L":"M")+e.x+" "+e.y;return a},_clipPoints:function(){var t,e,o,s=this._originalPoints,a=s.length;if(this.options.noClip)return this._parts=[s],i;this._parts=[];var r=this._parts,h=this._map._pathViewport,l=n.LineUtil;for(t=0,e=0;a-1>t;t++)o=l.clipSegment(s[t],s[t+1],h,t),o&&(r[e]=r[e]||[],r[e].push(o[0]),(o[1]!==s[t+1]||t===a-2)&&(r[e].push(o[1]),e++))},_simplifyPoints:function(){for(var t=this._parts,e=n.LineUtil,i=0,o=t.length;o>i;i++)t[i]=e.simplify(t[i],this.options.smoothFactor)},_updatePath:function(){this._map&&(this._clipPoints(),this._simplifyPoints(),n.Path.prototype._updatePath.call(this))}}),n.polyline=function(t,e){return new n.Polyline(t,e)},n.PolyUtil={},n.PolyUtil.clipPolygon=function(t,e){var i,o,s,a,r,h,l,u,c,_=[1,4,2,8],d=n.LineUtil;for(o=0,l=t.length;l>o;o++)t[o]._code=d._getBitCode(t[o],e);for(a=0;4>a;a++){for(u=_[a],i=[],o=0,l=t.length,s=l-1;l>o;s=o++)r=t[o],h=t[s],r._code&u?h._code&u||(c=d._getEdgeIntersection(h,r,u,e),c._code=d._getBitCode(c,e),i.push(c)):(h._code&u&&(c=d._getEdgeIntersection(h,r,u,e),c._code=d._getBitCode(c,e),i.push(c)),i.push(r));t=i}return t},n.Polygon=n.Polyline.extend({options:{fill:!0},initialize:function(t,e){n.Polyline.prototype.initialize.call(this,t,e),t&&n.Util.isArray(t[0])&&"number"!=typeof t[0][0]&&(this._latlngs=this._convertLatLngs(t[0]),this._holes=t.slice(1))},projectLatlngs:function(){if(n.Polyline.prototype.projectLatlngs.call(this),this._holePoints=[],this._holes){var t,e,i,o;for(t=0,i=this._holes.length;i>t;t++)for(this._holePoints[t]=[],e=0,o=this._holes[t].length;o>e;e++)this._holePoints[t][e]=this._map.latLngToLayerPoint(this._holes[t][e])}},_clipPoints:function(){var t=this._originalPoints,e=[];if(this._parts=[t].concat(this._holePoints),!this.options.noClip){for(var i=0,o=this._parts.length;o>i;i++){var s=n.PolyUtil.clipPolygon(this._parts[i],this._map._pathViewport);s.length&&e.push(s)}this._parts=e}},_getPathPartStr:function(t){var e=n.Polyline.prototype._getPathPartStr.call(this,t);return e+(n.Browser.svg?"z":"x")}}),n.polygon=function(t,e){return new n.Polygon(t,e)},function(){function t(t){return n.FeatureGroup.extend({initialize:function(t,e){this._layers={},this._options=e,this.setLatLngs(t)},setLatLngs:function(e){var i=0,n=e.length;for(this.eachLayer(function(t){n>i?t.setLatLngs(e[i++]):this.removeLayer(t)},this);n>i;)this.addLayer(new t(e[i++],this._options));return this}})}n.MultiPolyline=t(n.Polyline),n.MultiPolygon=t(n.Polygon),n.multiPolyline=function(t,e){return new n.MultiPolyline(t,e)},n.multiPolygon=function(t,e){return new n.MultiPolygon(t,e)}}(),n.Rectangle=n.Polygon.extend({initialize:function(t,e){n.Polygon.prototype.initialize.call(this,this._boundsToLatLngs(t),e)},setBounds:function(t){this.setLatLngs(this._boundsToLatLngs(t))},_boundsToLatLngs:function(t){return t=n.latLngBounds(t),[t.getSouthWest(),t.getNorthWest(),t.getNorthEast(),t.getSouthEast()]}}),n.rectangle=function(t,e){return new n.Rectangle(t,e)},n.Circle=n.Path.extend({initialize:function(t,e,i){n.Path.prototype.initialize.call(this,i),this._latlng=n.latLng(t),this._mRadius=e},options:{fill:!0},setLatLng:function(t){return this._latlng=n.latLng(t),this.redraw()},setRadius:function(t){return this._mRadius=t,this.redraw()},projectLatlngs:function(){var t=this._getLngRadius(),e=new n.LatLng(this._latlng.lat,this._latlng.lng-t),i=this._map.latLngToLayerPoint(e);this._point=this._map.latLngToLayerPoint(this._latlng),this._radius=Math.max(Math.round(this._point.x-i.x),1)},getBounds:function()
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},addTo:function(t){this._map=t;var e=this._container=this.onAdd(t),i=this.getPosition(),o=t._controlCorners[i];return n.DomUtil.addClass(e,"leaflet-control"),-1!==i.indexOf("bottom")?o.insertBefore(e,o.firstChild):o.appendChild(e),this},removeFrom:function(t){var e=this.getPosition(),i=t._controlCorners[e];return i.removeChild(this._container),this._map=null,this.onRemove&&this.onRemove(t),this}}),n.control=function(t){return new n.Control(t)},n.Map.include({addControl:function(t){return t.addTo(this),this},removeControl:function(t){return t.removeFrom(this),this},_initControlPos:function(){function t(t,s){var a=i+t+" "+i+s;e[t+s]=n.DomUtil.create("div",a,o)}var e=this._controlCorners={},i="leaflet-",o=this._controlContainer=n.DomUtil.create("div",i+"control-container",this._container);t("top","left"),t("top","right"),t("bottom","left"),t("bottom","right")}}),n.Control.Zoom=n.Control.extend({options:{position:"topleft"},onAdd:function(t){var e="leaflet-control-zoom",i="leaflet-bar",o=i+"-part",s=n.DomUtil.create("div",e+" "+i);return this._map=t,this._zoomInButton=this._createButton("+","Zoom in",e+"-in "+o+" "+o+"-top",s,this._zoomIn,this),this._zoomOutButton=this._createButton("-","Zoom out",e+"-out "+o+" "+o+"-bottom",s,this._zoomOut,this),t.on("zoomend",this._updateDisabled,this),s},onRemove:function(t){t.off("zoomend",this._updateDisabled,this)},_zoomIn:function(t){this._map.zoomIn(t.shiftKey?3:1)},_zoomOut:function(t){this._map.zoomOut(t.shiftKey?3:1)},_createButton:function(t,e,i,o,s,a){var r=n.DomUtil.create("a",i,o);r.innerHTML=t,r.href="#",r.title=e;var h=n.DomEvent.stopPropagation;return n.DomEvent.on(r,"click",h).on(r,"mousedown",h).on(r,"dblclick",h).on(r,"click",n.DomEvent.preventDefault).on(r,"click",s,a),r},_updateDisabled:function(){var t=this._map,e="leaflet-control-zoom-disabled";n.DomUtil.removeClass(this._zoomInButton,e),n.DomUtil.removeClass(this._zoomOutButton,e),t._zoom===t.getMinZoom()&&n.DomUtil.addClass(this._zoomOutButton,e),t._zoom===t.getMaxZoom()&&n.DomUtil.addClass(this._zoomInButton,e)}}),n.Map.mergeOptions({zoomControl:!0}),n.Map.addInitHook(function(){this.options.zoomControl&&(this.zoomControl=new n.Control.Zoom,this.addControl(this.zoomControl))}),n.control.zoom=function(t){return new n.Control.Zoom(t)},n.Control.Attribution=n.Control.extend({options:{position:"bottomright",prefix:'Powered by <a href="http://leafletjs.com">Leaflet</a>'},initialize:function(t){n.setOptions(this,t),this._attributions={}},onAdd:function(t){return this._container=n.DomUtil.create("div","leaflet-control-attribution"),n.DomEvent.disableClickPropagation(this._container),t.on("layeradd",this._onLayerAdd,this).on("layerremove",this._onLayerRemove,this),this._update(),this._container},onRemove:function(t){t.off("layeradd",this._onLayerAdd).off("layerremove",this._onLayerRemove)},setPrefix:function(t){return this.options.prefix=t,this._update(),this},addAttribution:function(t){return t?(this._attributions[t]||(this._attributions[t]=0),this._attributions[t]++,this._update(),this):i},removeAttribution:function(t){return t?(this._attributions[t]--,this._update(),this):i},_update:function(){if(this._map){var t=[];for(var e in this._attributions)this._attributions.hasOwnProperty(e)&&this._attributions[e]&&t.push(e);var i=[];this.options.prefix&&i.push(this.options.prefix),t.length&&i.push(t.join(", ")),this._container.innerHTML=i.join(" &#8212; ")}},_onLayerAdd:function(t){t.layer.getAttribution&&this.addAttribution(t.layer.getAttribution())},_onLayerRemove:function(t){t.layer.getAttribution&&this.removeAttribution(t.layer.getAttribution())}}),n.Map.mergeOptions({attributionControl:!0}),n.Map.addInitHook(function(){this.options.attributionControl&&(this.attributionControl=(new n.Control.Attribution).addTo(this))}),n.control.attribution=function(t){return new n.Control.Attribution(t)},n.Control.Scale=n.Control.extend({options:{position:"bottomleft",maxWidth:100,metric:!0,imperial:!0,updateWhenIdle:!1},onAdd:function(t){this._map=t;var e="leaflet-control-scale",i=n.DomUtil.create("div",e),o=this.options;return this._