forked from MTSR/mapserver
98 lines
2.2 KiB
JavaScript
98 lines
2.2 KiB
JavaScript
import debounce from '../../util/debounce.js';
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import layerMgr from '../../LayerManager.js';
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import { getMapObjects } from '../../api.js';
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export default L.LayerGroup.extend({
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initialize: function(type) {
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L.LayerGroup.prototype.initialize.call(this);
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this.type = type;
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this.onMapMove = debounce(this.onMapMove.bind(this), 50);
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},
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onMapMove: function(){
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this.reDraw();
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},
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createStyle: function(){
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//TODO: default style
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},
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createGeoJson: function(objects){
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var self = this;
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var geoJsonLayer = L.geoJSON([], {
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onEachFeature: function(feature, layer){
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if (feature.properties && feature.properties.popupContent) {
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layer.bindPopup(feature.properties.popupContent);
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}
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},
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style: self.createStyle.bind(self)
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});
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objects.forEach(function(obj){
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geoJsonLayer.addData(self.createFeature(obj));
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});
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return geoJsonLayer;
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},
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getMaxDisplayedZoom: function(){
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return 7;
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},
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getMinDisplayedZoom: function(){
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return 13;
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},
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reDraw: function(){
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var self = this;
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var zoom = this.map.getZoom();
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if (zoom < this.getMaxDisplayedZoom() || zoom > this.getMinDisplayedZoom()) {
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this.clearLayers();
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return;
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}
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var mapLayer = layerMgr.getCurrentLayer();
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var min = this._map.getBounds().getSouthWest();
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var max = this._map.getBounds().getNorthEast();
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var y1 = parseInt(mapLayer.from);
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var y2 = parseInt(mapLayer.to);
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var x1 = parseInt(min.lng/16);
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var x2 = parseInt(max.lng/16);
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var z1 = parseInt(min.lat/16);
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var z2 = parseInt(max.lat/16);
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getMapObjects({
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pos1: { x:x1, y:y1, z:z1 },
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pos2: { x:x2, y:y2, z:z2 },
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type: this.type
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})
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.then(function(objects){
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self.clearLayers();
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var geoJsonLayer = self.createGeoJson(objects);
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geoJsonLayer.addTo(self);
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});
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},
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onAdd: function(map) {
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this.map = map;
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map.on("zoomend", this.onMapMove);
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map.on("moveend", this.onMapMove);
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this.reDraw(true);
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},
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onRemove: function(map) {
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this.clearLayers();
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map.off("zoomend", this.onMapMove);
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map.off("moveend", this.onMapMove);
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}
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});
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