import clone from '../../../utils/utils'
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/**
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* 组装wms加载所需的layers以及filters参数
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*/
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class WmsLayerList {
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constructor () {
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// [{图层名称：[{typeName:xxx,filter:yyy}]}]
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this.layers = []
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}
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addConfig (config) {
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const typeName = config.typeName
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const layerGroup = config.layerGroup || typeName
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const filter = config.filter
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const index = config.index
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if (layerGroup) {
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this.addLayer(layerGroup, typeName, filter, index)
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}
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}
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addLayer (layerGroup, typeName, filter, index) {
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const layer = this._getLayer(layerGroup)
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if (layer) {
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const offset = this.indexOf(typeName, filter)
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if (offset < 0) {
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const layerConfig = layer[layerGroup]
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layerConfig.push({ typeName: typeName, filter: filter || 'INCLUDE' })
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}
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} else {
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const layerConfig = {}
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layerConfig[layerGroup] = [{ typeName: typeName, filter: filter || 'INCLUDE' }]
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if (index) {
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this.layers[index] = layerConfig
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} else {
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this.layers.push(layerConfig)
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}
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}
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}
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_getLayer (layer) {
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const layers = this.layers
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for (let i = 0; i < layers.length; i++) {
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const lay = layers[i]
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if (lay && lay[layer]) {
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return lay
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}
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}
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return null
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}
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indexOf (typeName, filter) {
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filter = filter || 'INCLUDE'
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const layers = this.layers
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for (let i = 0; i < layers.length; i++) {
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const layer = layers[i]
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for (const k in layer) {
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const lay = layer[k]
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for (let j = 0; j < lay.length; j++) {
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const l = lay[j]
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if (typeName === l.typeName && filter === l.filter) {
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return j
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}
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}
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}
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}
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return -1
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}
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remove (typeName, filter) {
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filter = filter || 'INCLUDE'
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const layers = clone(this.layers)
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for (let j = 0; j < layers.length; j++) {
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const layer = layers[j]
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for (const k in layer) {
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/* if (typeName === k) {
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delete this.layers[j][k]
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break
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} */
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const layerConfig = layer[k]
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for (let i = 0; i < layerConfig.length; i++) {
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const lay = layerConfig[i]
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if (typeName === lay.typeName && filter === lay.filter) {
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this.layers[j][k].splice(i, 1)
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if (this.layers[j][k].length === 0) {
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this.layers.splice(j, 1)
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}
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}
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}
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}
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}
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}
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getLayers () {
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const layers = this.layers
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const _layers = []
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for (let i = 0; i < layers.length; i++) {
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const layer = layers[i]
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for (const k in layer) {
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_layers.push(k)
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}
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}
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return _layers.join(',')
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}
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getFilters () {
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const layers = this.layers
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const cqlFilters = []
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for (let i = 0; i < layers.length; i++) {
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const layer = layers[i]
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const filters = []
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for (const k in layer) {
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const layerConfig = layer[k]
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for (let i = 0; i < layerConfig.length; i++) {
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const filter = layerConfig[i].filter
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if (filter) {
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filters.push(filter)
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}
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}
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}
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if (filters.length > 0) {
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cqlFilters.push(filters.join(' OR '))
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}
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}
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return cqlFilters.join(';')
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}
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/**
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* 添加元素到指定位置
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* @param index
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* @param element
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* @private
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*/
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_addIndex (index, element) {
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const newArr = []
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for (var i = this.dataSouce.length - 1; i > index - 1; i--) {
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newArr[i + 1] = this.dataSouce[i]
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}
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newArr[index] = element
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this.layers = newArr
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}
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}
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export default WmsLayerList
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