Aw5739 Add ngx openlayers

projects/ngx-openlayers/src/lib/feature.component.ts

@@ -0,0 +1,35 @@
+import { Component, Input, OnChanges, OnDestroy, OnInit, SimpleChanges } from '@angular/core';
+import { Feature } from 'ol';
+import { SourceVectorComponent } from './sources/vector.component';
+
+@Component({
+  selector: 'aol-feature',
+  template: ` <ng-content></ng-content> `,
+})
+export class FeatureComponent implements OnInit, OnDestroy, OnChanges {
+  @Input()
+  id: string | number | undefined;
+
+  componentType = 'feature';
+  instance: Feature;
+
+  constructor(private host: SourceVectorComponent) {}
+
+  ngOnInit() {
+    this.instance = new Feature();
+    if (this.id !== undefined) {
+      this.instance.setId(this.id);
+    }
+    this.host.instance.addFeature(this.instance);
+  }
+
+  ngOnDestroy() {
+    this.host.instance.removeFeature(this.instance);
+  }
+
+  ngOnChanges(changes: SimpleChanges) {
+    if (this.instance) {
+      this.instance.setId(this.id);
+    }
+  }
+}