图层控制

徐旺旺

2020-12-29 cd66cc40d94e0f0845334fd15690cb93c7d50ad1

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/**
 * 加载WMS,拼接FILTER,LAYERS参数等
 */
function WmsHelper() {
    this.filters = {}
    this.wmsLayersMap = {}
 
    this.initMapConfig = (mapConfig) => {
        var serviceLayers = mapConfig.mapConfig.ServiceLayers
        for (var i = 0; i < serviceLayers.length; i++) {
            var service = serviceLayers[i]
            var checked = service.checked
            if (!checked) {
                break
            }
            var filtersGroup = service.filtersGroup
            if (filtersGroup) {
                this.initLayer(service.code, filtersGroup)
            }
        }
    }
    this.initLayer = (wms, layersGroup) => {
        for (var i = 0; i < layersGroup.length; i++) {
            var filters = layersGroup[i].filters
            for (var j = 0; j < filters.length; j++) {
                var layer = filters[j]
                var checked = layer.checked
                var code = layer.code
                if (checked) {
                    this.addLayer(wms, code)
                }
            }
        }
    }
    this.initFilter = () => {
        /* for (var i = 0; i < filters.length; i++) {
             var filter = filters[i]
             this.addFilter()
         }*/
    }
    this.addLayer = (wms, layer) => {
        var wmsLayer = this.wmsLayersMap[wms]
        if (wmsLayer) {
            wmsLayer[wmsLayer.length] = layer
        } else {
            this.wmsLayersMap[wms] = [layer]
        }
    }
    this.addFilter = (condition) => {
        //var filter = this.filters[layer]
        //if (filter) {
        this.filters[this.filters.length] = condition
        //} else {
        //    this.filters[layer] = [condition]
        // }
    }
    this.getWmsLayersMap = () => {
        return this.wmsLayersMap
    }
    this.getFilterURL = () => {
        var filterURL = ''
        var conditions = ''
        for (var f in this.filters) {
            var filters = this.filters[f]
            for (var i = 0; i < filters.length; i++) {
                conditions += filters[i]
                if (i < filters.length) {
                    conditions += ','
                }
            }
            filterURL += f + '.(' + conditions + ');'
        }
        return filterURL.substr(0, filterURL.length - 1)
    }
}
 
export default WmsHelper