Leveraging the OpenLayers Map functionality within an Angular service

I am curious to learn if there is a way to utilize a service in Angular for creating an OpenLayers map and then passing that service to other components to update the map based on interactions within those components. I have outlined my approach below. Despite successfully logging the creation of the Map object, I am unable to see the map on the screen.

dashboard-map-service

import { Injectable } from '@angular/core';
import { Map, View } from 'ol';
import TileLayer from 'ol/layer/Tile';
import OSM from 'ol/source/OSM';

@Injectable({
  providedIn: 'root'
})
export class DashboardMapService {

  map: Map;

  constructor() {
    this.map = new Map({
      view: new View({
        center: [16400413.444439406, -5295269.033843756],
        zoom: 12,
        minZoom: 10,
      }),
      layers: [
        new TileLayer({
          source: new OSM(),
        }),
      ]
    })
   }

   returnMap(){
    return this.map;
   }

   setMap(updatedMap: Map) {
    this.map = updatedMap;
    console.log("map", this.map)
   }
}

add-location-component

import { Component, OnInit, AfterViewInit } from '@angular/core';
import { Map } from 'ol';
import { DashboardMapService } from 'src/app/services/dashboard-map.service';

@Component({
  selector: 'app-add-location',
  templateUrl: './add-location.component.html',
  styleUrls: ['./add-location.component.css']
})
export class AddLocationComponent implements OnInit, AfterViewInit {

  refmap: Map;

  constructor(private dashboardMap: DashboardMapService) {
    this.refmap = dashboardMap.returnMap()
    this.refmap.setTarget("add-location-map")
    
    this.dashboardMap.setMap(this.refmap)
   }

  ngOnInit(): void {

  }

  ngAfterViewInit() {

  }

}

Answer №1

After investigating further, I discovered that the solution lied within the utilization of Angular's lifecycle hooks. By properly setting both the target and value of the service map during ngAfterViewInit(), I was able to resolve the issue successfully. The code snippet below illustrates this implementation.

ngAfterViewInit() {
    this.newMap.setTarget("location-map")
    this.mapDisplay.setMap(this.newMap)
  }

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