Method modifyMapboxstyleLayer

src/openlayers/mapping/WebMap.js:5098–5122

* @private * @function WebMap.prototype.modifyMapboxstyleLayer * @description mapboxstyle图层：1. layer id重复问题 2.叠加图层背景色问题 * @param {Object} mapInfo 地图信息 * @param {Object} layerInfo 当前要添加到地图的图层

(mapInfo, layerInfo)

   * @param {Object} layerInfo 当前要添加到地图的图层
   */
  modifyMapboxstyleLayer(mapInfo, layerInfo) {
    let that = this;
    if (mapInfo.layers && mapInfo.layers.length === 0) {
      return;
    }
    let curLayers = layerInfo.styles.layers;
    if (!curLayers) {
      return;
    }
    // 非底图，则移除"background"图层
    curLayers = curLayers.filter((layer) => layer.type !== 'background');
    layerInfo.styles.layers = curLayers;
    // 处理mapboxstyle图层layer id重复的情况
    let addedLayersArr = mapInfo.layers
      .filter((layer) => layer.layerType === 'VECTOR_TILE' && layer.zIndex !== layerInfo.zIndex)
      .map((addLayer) => addLayer.styles && addLayer.styles.layers);
    if (!addedLayersArr || (addedLayersArr && addedLayersArr.length === 0)) {
      return;
    }
    addedLayersArr.forEach((layers) => {
      curLayers.forEach((curLayer) => {
        that.renameLayerId(layers, curLayer);
      });
    });
  }
  /**
   * @private
   * @function WebMap.prototype.renameLayerId