10 lines
8.0 KiB
JavaScript
10 lines
8.0 KiB
JavaScript
/*
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Leaflet.label, a plugin that adds labels to markers and vectors for Leaflet powered maps.
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(c) 2012-2013, Jacob Toye, Smartrak
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https://github.com/Leaflet/Leaflet.label
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http://leafletjs.com
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https://github.com/jacobtoye
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*/
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(function(){L.labelVersion="0.2.2-dev",L.Label=L.Class.extend({includes:L.Mixin.Events,options:{className:"",clickable:!1,direction:"right",noHide:!1,offset:[12,-15],opacity:1,zoomAnimation:!0},initialize:function(t,e){L.setOptions(this,t),this._source=e,this._animated=L.Browser.any3d&&this.options.zoomAnimation,this._isOpen=!1},onAdd:function(t){this._map=t,this._pane=this._source instanceof L.Marker?t._panes.markerPane:t._panes.popupPane,this._container||this._initLayout(),this._pane.appendChild(this._container),this._initInteraction(),this._update(),this.setOpacity(this.options.opacity),t.on("moveend",this._onMoveEnd,this).on("viewreset",this._onViewReset,this),this._animated&&t.on("zoomanim",this._zoomAnimation,this),L.Browser.touch&&!this.options.noHide&&L.DomEvent.on(this._container,"click",this.close,this)},onRemove:function(t){this._pane.removeChild(this._container),t.off({zoomanim:this._zoomAnimation,moveend:this._onMoveEnd,viewreset:this._onViewReset},this),this._removeInteraction(),this._map=null},setLatLng:function(t){return this._latlng=L.latLng(t),this._map&&this._updatePosition(),this},setContent:function(t){return this._previousContent=this._content,this._content=t,this._updateContent(),this},close:function(){var t=this._map;t&&(L.Browser.touch&&!this.options.noHide&&L.DomEvent.off(this._container,"click",this.close),t.removeLayer(this))},updateZIndex:function(t){this._zIndex=t,this._container&&this._zIndex&&(this._container.style.zIndex=t)},setOpacity:function(t){this.options.opacity=t,this._container&&L.DomUtil.setOpacity(this._container,t)},_initLayout:function(){this._container=L.DomUtil.create("div","leaflet-label "+this.options.className+" leaflet-zoom-animated"),this.updateZIndex(this._zIndex)},_update:function(){this._map&&(this._container.style.visibility="hidden",this._updateContent(),this._updatePosition(),this._container.style.visibility="")},_updateContent:function(){this._content&&this._map&&this._prevContent!==this._content&&"string"==typeof this._content&&(this._container.innerHTML=this._content,this._prevContent=this._content,this._labelWidth=this._container.offsetWidth)},_updatePosition:function(){var t=this._map.latLngToLayerPoint(this._latlng);this._setPosition(t)},_setPosition:function(t){var e=this._map,i=this._container,n=e.latLngToContainerPoint(e.getCenter()),o=e.layerPointToContainerPoint(t),s=this.options.direction,a=this._labelWidth,l=L.point(this.options.offset);"right"===s||"auto"===s&&o.x<n.x?(L.DomUtil.addClass(i,"leaflet-label-right"),L.DomUtil.removeClass(i,"leaflet-label-left"),t=t.add(l)):(L.DomUtil.addClass(i,"leaflet-label-left"),L.DomUtil.removeClass(i,"leaflet-label-right"),t=t.add(L.point(-l.x-a,l.y))),L.DomUtil.setPosition(i,t)},_zoomAnimation:function(t){var e=this._map._latLngToNewLayerPoint(this._latlng,t.zoom,t.center).round();this._setPosition(e)},_onMoveEnd:function(){this._animated&&"auto"!==this.options.direction||this._updatePosition()},_onViewReset:function(t){t&&t.hard&&this._update()},_initInteraction:function(){if(this.options.clickable){var t=this._container,e=["dblclick","mousedown","mouseover","mouseout","contextmenu"];L.DomUtil.addClass(t,"leaflet-clickable"),L.DomEvent.on(t,"click",this._onMouseClick,this);for(var i=0;e.length>i;i++)L.DomEvent.on(t,e[i],this._fireMouseEvent,this)}},_removeInteraction:function(){if(this.options.clickable){var t=this._container,e=["dblclick","mousedown","mouseover","mouseout","contextmenu"];L.DomUtil.removeClass(t,"leaflet-clickable"),L.DomEvent.off(t,"click",this._onMouseClick,this);for(var i=0;e.length>i;i++)L.DomEvent.off(t,e[i],this._fireMouseEvent,this)}},_onMouseClick:function(t){this.hasEventListeners(t.type)&&L.DomEvent.stopPropagation(t),this.fire(t.type,{originalEvent:t})},_fireMouseEvent:function(t){this.fire(t.type,{originalEvent:t}),"contextmenu"===t.type&&this.hasEventListeners(t.type)&&L.DomEvent.preventDefault(t),"mousedown"!==t.type?L.DomEvent.stopPropagation(t):L.DomEvent.preventDefault(t)}}),L.BaseMarkerMethods={showLabel:function(){return this.label&&this._map&&(this.label.setLatLng(this._latlng),this._map.showLabel(this.label)),this},hideLabel:function(){return this.label&&this.label.close(),this},setLabelNoHide:function(t){this._labelNoHide!==t&&(this._labelNoHide=t,t?(this._removeLabelRevealHandlers(),this.showLabel()):(this._addLabelRevealHandlers(),this.hideLabel()))},bindLabel:function(t,e){var i=this.options.icon?this.options.icon.options.labelAnchor:this.options.labelAnchor,n=L.point(i)||L.point(0,0);return n=n.add(L.Label.prototype.options.offset),e&&e.offset&&(n=n.add(e.offset)),e=L.Util.extend({offset:n},e),this._labelNoHide=e.noHide,this.label||(this._labelNoHide||this._addLabelRevealHandlers(),this.on("remove",this.hideLabel,this).on("move",this._moveLabel,this).on("add",this._onMarkerAdd,this),this._hasLabelHandlers=!0),this.label=new L.Label(e,this).setContent(t),this},unbindLabel:function(){return this.label&&(this.hideLabel(),this.label=null,this._hasLabelHandlers&&(this._labelNoHide||this._removeLabelRevealHandlers(),this.off("remove",this.hideLabel,this).off("move",this._moveLabel,this).off("add",this._onMarkerAdd,this)),this._hasLabelHandlers=!1),this},updateLabelContent:function(t){this.label&&this.label.setContent(t)},getLabel:function(){return this.label},_onMarkerAdd:function(){this._labelNoHide&&this.showLabel()},_addLabelRevealHandlers:function(){this.on("mouseover",this.showLabel,this).on("mouseout",this.hideLabel,this),L.Browser.touch&&this.on("click",this.showLabel,this)},_removeLabelRevealHandlers:function(){this.off("mouseover",this.showLabel,this).off("mouseout",this.hideLabel,this),L.Browser.touch&&this.off("click",this.showLabel,this)},_moveLabel:function(t){this.label.setLatLng(t.latlng)}},L.Icon.Default.mergeOptions({labelAnchor:new L.Point(9,-20)}),L.Marker.mergeOptions({icon:new L.Icon.Default}),L.Marker.include(L.BaseMarkerMethods),L.Marker.include({_originalUpdateZIndex:L.Marker.prototype._updateZIndex,_updateZIndex:function(t){var e=this._zIndex+t;this._originalUpdateZIndex(t),this.label&&this.label.updateZIndex(e)},_originalSetOpacity:L.Marker.prototype.setOpacity,setOpacity:function(t,e){this.options.labelHasSemiTransparency=e,this._originalSetOpacity(t)},_originalUpdateOpacity:L.Marker.prototype._updateOpacity,_updateOpacity:function(){var t=0===this.options.opacity?0:1;this._originalUpdateOpacity(),this.label&&this.label.setOpacity(this.options.labelHasSemiTransparency?this.options.opacity:t)},_originalSetLatLng:L.Marker.prototype.setLatLng,setLatLng:function(t){return this.label&&!this._labelNoHide&&this.hideLabel(),this._originalSetLatLng(t)}}),L.CircleMarker.mergeOptions({labelAnchor:new L.Point(0,0)}),L.CircleMarker.include(L.BaseMarkerMethods),L.Path.include({bindLabel:function(t,e){return this.label&&this.label.options===e||(this.label=new L.Label(e,this)),this.label.setContent(t),this._showLabelAdded||(this.on("mouseover",this._showLabel,this).on("mousemove",this._moveLabel,this).on("mouseout remove",this._hideLabel,this),L.Browser.touch&&this.on("click",this._showLabel,this),this._showLabelAdded=!0),this},unbindLabel:function(){return this.label&&(this._hideLabel(),this.label=null,this._showLabelAdded=!1,this.off("mouseover",this._showLabel,this).off("mousemove",this._moveLabel,this).off("mouseout remove",this._hideLabel,this)),this},updateLabelContent:function(t){this.label&&this.label.setContent(t)},_showLabel:function(t){this.label.setLatLng(t.latlng),this._map.showLabel(this.label)},_moveLabel:function(t){this.label.setLatLng(t.latlng)},_hideLabel:function(){this.label.close()}}),L.Map.include({showLabel:function(t){return this.addLayer(t)}}),L.FeatureGroup.include({clearLayers:function(){return this.unbindLabel(),this.eachLayer(this.removeLayer,this),this},bindLabel:function(t,e){return this.invoke("bindLabel",t,e)},unbindLabel:function(){return this.invoke("unbindLabel")},updateLabelContent:function(t){this.invoke("updateLabelContent",t)}})})(this,document);
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