import { WMS_URL } from '../../../conf/Constants'
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import WmsLayerList from '../dataset/WmsLayerList'
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/**
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* todo 得考虑一个图层配置了多个 wmsLayers的情况
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*/
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class WmsLayerService {
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constructor (layersConfig) {
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this.L = window.L
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this.map = window.map
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this.popupComp = window.popupComp
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// wms getfeatureinfo 默认参数
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this.params = {
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VERSION: '1.1.1',
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SERVICE: 'WMS',
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REQUEST: 'GetFeatureInfo',
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// bbox: bbox,
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FORMAT: 'image/png',
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INFO_FORMAT: 'application/json',
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TRANSPARENT: true,
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FEATURE_COUNT: 50,
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maxZoom: 21,
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SRS: 'EPSG:4326',
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EXCEPTIONS: 'application/vnd.ogc.se_inimage'
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}
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this.layersConfig = layersConfig
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// 存放getfeatureinfo的图层组
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this.featureGroup = this.L.featureGroup({}).addTo(this.map)
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this.wmsLayerList = new WmsLayerList()
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if (layersConfig) {
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for (var i = 0; i < layersConfig.length; i++) {
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const config = layersConfig[i]
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this.wmsLayerList.addConfig(config)
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}
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}
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this.load()
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}
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init () {
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}
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addAll (configs) {
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for (let i = 0; i < configs.length; i++) {
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const config = configs[i]
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const layers = config.layers
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if (layers) {
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this.addAll(layers)
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}
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this.wmsLayerList.addConfig(config)
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}
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this.reload()
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}
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add (config) {
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this.wmsLayerList.addConfig(config)
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this.reload()
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}
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removeAll (configs) {
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for (let i = 0; i < configs.length; i++) {
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const config = configs[i]
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const layers = config.layers
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if (layers) {
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this.removeAll(layers)
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}
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this.wmsLayerList.remove(config.typeName, config.filter)
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}
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this.reload()
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}
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remove (config) {
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this.wmsLayerList.remove(config.typeName, config.filter)
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this.reload()
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}
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reload () {
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const layers = this.wmsLayerList.getLayers() || ''
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const filter = this.wmsLayerList.getFilters() || ''
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const params = {}
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params.cql_filter = filter
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params.layers = layers
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this.wmsLayer.setParams(params, false)
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}
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load () {
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const layers = this.wmsLayerList.getLayers()
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const filter = this.wmsLayerList.getFilters()
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const params = {
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format: 'image/png', // 返回的数据格式
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transparent: true,
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maxZoom: 21,
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BBOX: this.map.getBounds().toBBoxString()
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}
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if (layers) {
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params.layers = layers
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}
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if (filter.length > 0) {
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params.cql_filter = filter
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}
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this.wmsLayer = this.L.tileLayer.wms(WMS_URL, params).addTo(this.map)
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}
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}
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export default WmsLayerService
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