L.Control.DrawRectangle = L.Control.extend({
    //是否初始化
    _initialized:false,
    //是否完成当前测绘
    _finished:true,
    drawrectangle:null,
    drawrectangledata:{
        _latlng:[],
        bounds:[]
    },
    options:{
        position:'topright',
        autoZIndex:true,
        offset:[10,40]
    },

    initialize:function(options){
        L.setOptions(this, options);
        return this;
    },

    onAdd:function(map){
        this._map = map;
        this._createControl();

        switch(this.options.position){
            case 'topleft':
                this._container.style.marginLeft = this.options.offset[0]+'px';
                this._container.style.marginTop = this.options.offset[1]+'px';
                break;
            case 'topright':
                this._container.style.marginRight = this.options.offset[0]+'px';
                this._container.style.marginTop = this.options.offset[1]+'px';
                break;
            case 'bottomleft':
                this._container.style.marginLeft = this.options.offset[0]+'px';
                this._container.style.marginBottom = this.options.offset[1]+'px';
                break;
            case 'bottomright':
                this._container.style.marginRight = this.options.offset[0]+'px';
                this._container.style.marginBottom = this.options.offset[1]+'px';
                break;
        }
        return this._container;
    },

    _createControl:function(){
        var _this = this;
        this._container = L.DomUtil.create('div','leaflet-bar leaflet-control-drawrectangle');

        var link = L.DomUtil.create('a','leaflet-control-drawrectangle-link',this._container);
        link.title = '画矩形';
        var drawSpan = L.DomUtil.create('span','',link);
        drawSpan.innerHTML = "矩";

        L.DomEvent
            .on(this._container,'contextmenu',L.DomEvent.stopPropagation)
            .on(link,'click', L.DomEvent.stopPropagation)
            .on(link,'click',function(){
                _this.start();
            })
            
    },
    start:function(){
        var _this = this;
        
        L.DomUtil.addClass(_this._container,'active');
        if(L.Browser.ie || L.Browser.firefox){
            _this._map.getContainer().style.cursor = 'url('+L.DefaultImagePath+'/cur-ruler.cur),auto';
        }else{
            _this._map.getContainer().style.cursor = 'url('+L.DefaultImagePath+'/cur-ruler.cur) 5 5,auto';
        }
        map2DViewer.map.on('measure-drawrectangle-result', map2DViewer.drawrectangleFire);
        _this._map.dragging.disable();
        _this._map.on("mousedown",_this.rectangleMousedown,this)
                       .on("mouseup",_this.rectangleUp,this);
        
    },
    rectangleUp:function(){
        var _this = this;
        _this._map.dragging.enable();
        _this._map.off("mousedown",_this.rectangleMousedown,this)
                    .off("mousemove",_this.rectangleMove,this)
                    .off("mouseup",_this.rectangleUp,this);

        var recdata = _this.drawrectangledata.bounds;
        map2DViewer.map.getContainer().style.cursor = 'auto';
        _this._map.removeLayer(_this.rectangle);
        if(recdata.length<2){
        	return;
        }
        _this.drawrectangledata._latlng = [];
        _this.drawrectangledata._latlng.push([recdata[0][1],recdata[0][0]]);
        _this.drawrectangledata._latlng.push([recdata[0][1],recdata[1][0]]);
        _this.drawrectangledata._latlng.push([recdata[1][1],recdata[1][0]]);
        _this.drawrectangledata._latlng.push([recdata[1][1],recdata[0][0]]);

        _this._map.fire('measure-drawrectangle-result',_this.drawrectangledata);
        _this._map.off('measure-drawrectangle-result', map2DViewer.drawrectangleFire);
        
    },
    rectangleMousedown:function(e){
        var _this = this;
        _this.drawrectangledata.bounds[0] = [e.latlng.lat,e.latlng.lng];
        _this.rectangle = L.rectangle( 
               _this.drawrectangledata.bounds, 
               {
                color: '#ff0000',
                weight: 3,
                fillColor: '#ff6600',
                opacity: 0.7,
                fillOpacity: 0.2,
               }
            ).addTo(_this._map);
        _this._map.on("mousemove",_this.rectangleMove,this);
    },
    rectangleMove:function(e){
        var _this = this;
        _this.drawrectangledata.bounds[1] = [e.latlng.lat,e.latlng.lng];
        _this.rectangle.setBounds(_this.drawrectangledata.bounds);
    }
});

L.control.drawrectangle = function(options){
    return new L.Control.DrawRectangle(options);
}

//地图画矩形
map2DViewer.drawrectangleFire = function(data) {};
map2DViewer.setDrawRectangle = function(options) {
    var defaultData = {
        action: 'add',
        position: 'topleft',
        offset: [10, 10],
        properties: {
            color: '#ff0000',
            weight: 3,
            opacity: 1,
        },
    }
    _.merge(defaultData, options);
    switch (defaultData.action) {
        case 'add':
            this.drawrectangle = new L.Control.DrawRectangle({
                position: defaultData.position,
                offset: defaultData.offset,
                properties: defaultData.properties,
            }).addTo(this.map);
            return this.drawrectangle;
            break;
        case 'add_start':
            this.drawrectangle = new L.Control.DrawRectangle({
                position: defaultData.position,
                offset: defaultData.offset,
                properties: defaultData.properties,
            }).addTo(this.map);
            this.drawrectangle.start();
            return this.drawrectangle;
            break;
        case 'remove':
            this.map.removeControl(this.drawrectangle);
            break;
    }
}