Modify feature events

by Vladimir Vershinin

HTML

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.js"></script>
<script src="https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io/en/v5.3.0/build/ol.js"></script>
<script src="https://unpkg.com/[email protected]/lib/index.umd.js"></script>
<link rel="stylesheet" href="https://unpkg.com/[email protected]/lib/style.css">
<div id="app">
  <button @click="reset">Reset</button>
  <vl-map ref="map" data-projection="EPSG:4326">
    <vl-view ref="mapView" :zoom.sync="zoom" :center.sync="center"></vl-view>
    
    <vl-layer-tile>
      <vl-source-osm></vl-source-osm>
    </vl-layer-tile>
    
    
    <vl-layer-vector id="polygons">
      <vl-source-vector ref="polygonsSource" :features.sync="sourceFeatures"></vl-source-vector>
    </vl-layer-vector>
    
    <vl-interaction-select ident="modify-target"></vl-interaction-select>
    
    <vl-interaction-modify source="modify-target" @modifystart="onModifyStart" @modifyend="onModifyEnd"></vl-interaction-modify>
  </vl-map>
</div>

CSS

html, body, #app {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

JavaScript

new Vue({
	el: '#app',
  data () {
  	return {
    	zoom: 2,
      center: [0, 0],
      geoData: {"80E60EAF768D434D87E0175AA5487EE9":{"geometry_id":"80E60EAF768D434D87E0175AA5487EE9","system_id":"2045BD9BC88F4FBAAD5C6C39E55035A3","geometry":{"type":"Point","coordinates":[6.68555099088131,17.345400297731842]},"properties":{"name":"asdf-End"}},"BB04B8D0FA45411BA332A136538ED492":{"geometry_id":"BB04B8D0FA45411BA332A136538ED492","system_id":"2045BD9BC88F4FBAAD5C6C39E55035A3","geometry":{"type":"Polygon","coordinates":[[[-1.584507,21.67641],[10.774648,7.926836],[19.964789,16.892213],[-1.584507,21.67641]]]},"properties":{"name":"threshold"}},"C13FC37770FA4FD38F9EB3306F6630C8":{"geometry_id":"C13FC37770FA4FD38F9EB3306F6630C8","system_id":"2045BD9BC88F4FBAAD5C6C39E55035A3","geometry":{"type":"Point","coordinates":[4.661355,17.85556]},"properties":{"name":"asdf-Start"}},"E58E3AA5A0184AC88AFE83AE5D6BEED8":{"geometry_id":"E58E3AA5A0184AC88AFE83AE5D6BEED8","system_id":"2045BD9BC88F4FBAAD5C6C39E55035A3","geometry":{"type":"LineString","coordinates":[[4.661355000002877,17.855559999999613],[6.68555099088131,17.345400297731842]]},"properties":{"available_space":null,"geometry_id_end":"80E60EAF768D434D87E0175AA5487EE9","geometry_id_start":"C13FC37770FA4FD38F9EB3306F6630C8","name":"asdf"}}},
      modifyingFeatures: {},
      modifiedFeatures: [],
      currentSourceFeatures: []
    }
  },
  computed: {
  	features() {
    	return Object.values(this.geoData).map((geometry) => {
        const geoId = geometry.geometry_id;
        const feature = {
          type: "Feature",
          id: geoId,
          geometry: geometry.geometry,
          properties: {},
        };
        return feature;
        });
    },
    sourceFeatures: {
    	get () {
      	return this.currentSourceFeatures.length ? this.currentSourceFeatures : this.features
      },
      set (features) {
      	this.currentSourceFeatures = features
      },
    },
  },
  methods: {
  	onModifyStart (evt) {
   ...