Is there a way to invoke an Angular2 function from within a Google Map infowindow?

Question

Is there a way to invoke an Angular2 function from within a Google Map infowindow?

I am currently working on integrating Google Maps using javascript in a project, and I'm facing a challenge. I want to call an Angular2 function inside an infowindow as shown in the code snippet below. Pay attention to the infoContent variable that contains the button.

for (i = 0; i < locations.length; i++) {

  let locLatLng = new google.maps.LatLng(locations[i].latitude, locations[i].longitude);
  let infoContent = '<button (click)="myFunction(' + locations[i].id + ')">Details ...</button>';

  marker = new google.maps.Marker({
    position: locLatLng,
    map: this.map
  });

  google.maps.event.addListener(marker, 'click', (function(marker, i) {
    return function() {
      infowindow.setContent(infoContent);
      infowindow.open(this.map, marker);
    };
  })(marker, i));

}

Unfortunately, the usual angular click event (click)="myFunction()" doesn't work in this scenario. I believe there must be another way to achieve this functionality. If anyone has any suggestions or solutions to this problem, I would greatly appreciate it. Thank you in advance.

javascript google-maps-api-3 angular google-maps-markers

Answer 1

Answer №1

If you want to perform a trick by creating a reference to ngZone in the root Window and then calling it from within the infoWindow, follow these steps:

Start by obtaining access to NgZone in the constructor:

 constructor(public _ngZone: NgZone) {    }

Next, establish a connection back to your zone in the window, either in the ngOnInit, constructor, or elsewhere in your code:

    window["angularComponentRef"] = { component: this, zone: this._ngZone };

Now, you can trigger a callback from the infoWindow to your Angular function using zone.run like so:

    for (i = 0; i < locations.length; i++) {
        let locLatLng = new google.maps.LatLng(locations[i].latitude, locations[i].longitude);
        let infoContent: string = '<button onclick="window.angularComponentRef.zone.run(() => {window.angularComponentRef.component.myFunction(\'' + locations[i].id + '\');})">Details ...</button>';

        marker = new google.maps.Marker({
            position: locLatLng,
            map: this.map
        });

        google.maps.event.addListener(marker, 'click', (function (marker, i) {
            return function () {
                infowindow.setContent(infoContent);
                infowindow.open(this.map, marker);
            };
        })(marker, i));

    }

To prevent cluttering the window namespace, remember to clean up the function when necessary, such as in the ngOnDestroy method:

 window["angularComponentRef"] = null;

Answer 2

If you want to perform a trick by creating a reference to ngZone in the root Window and then calling it from within the infoWindow, follow these steps:

Start by obtaining access to NgZone in the constructor:

 constructor(public _ngZone: NgZone) {    }

Next, establish a connection back to your zone in the window, either in the ngOnInit, constructor, or elsewhere in your code:

    window["angularComponentRef"] = { component: this, zone: this._ngZone };

Now, you can trigger a callback from the infoWindow to your Angular function using zone.run like so:

    for (i = 0; i < locations.length; i++) {
        let locLatLng = new google.maps.LatLng(locations[i].latitude, locations[i].longitude);
        let infoContent: string = '<button onclick="window.angularComponentRef.zone.run(() => {window.angularComponentRef.component.myFunction(\'' + locations[i].id + '\');})">Details ...</button>';

        marker = new google.maps.Marker({
            position: locLatLng,
            map: this.map
        });

        google.maps.event.addListener(marker, 'click', (function (marker, i) {
            return function () {
                infowindow.setContent(infoContent);
                infowindow.open(this.map, marker);
            };
        })(marker, i));

    }

To prevent cluttering the window namespace, remember to clean up the function when necessary, such as in the ngOnDestroy method:

 window["angularComponentRef"] = null;

Answer 3

Answer №2

update (from comment)

To tackle this issue, you can utilize ElementRef and Renderer, although the main challenge lies in obtaining a reference to the button element either through direct DOM access or using ElementRef. One approach is to inject private elRef:ElementRef and then use

this.elRef.nativeElement.querySelector('infowindow button')

or similar methods. However, accessing elRef.nativeElement directly departs from platform neutrality guidelines. On the other hand, the restrictions of Renderer limit its capability to only call methods without returning a result, posing constraints on possible solutions.

A suggested workaround involves implementing a technique demonstrated in the following resource: Trigger event with infoWindow or InfoBox on click Google Map API V3. Subsequently, you can examine the event.target to determine if the desired element was clicked.

original

If you wish to access this.map within the event handler, consider using arrow functions instead:

  google.maps.event.addListener(marker, 'click', ((marker, i) => {
    return () => {
      infowindow.setContent(infoContent);
      infowindow.open(this.map, marker);
    };
  })(marker, i)

Otherwise, using this. will not correctly reference the current class instance.

Answer 4

update (from comment)

To tackle this issue, you can utilize ElementRef and Renderer, although the main challenge lies in obtaining a reference to the button element either through direct DOM access or using ElementRef. One approach is to inject private elRef:ElementRef and then use

this.elRef.nativeElement.querySelector('infowindow button')

or similar methods. However, accessing elRef.nativeElement directly departs from platform neutrality guidelines. On the other hand, the restrictions of Renderer limit its capability to only call methods without returning a result, posing constraints on possible solutions.

A suggested workaround involves implementing a technique demonstrated in the following resource: Trigger event with infoWindow or InfoBox on click Google Map API V3. Subsequently, you can examine the event.target to determine if the desired element was clicked.

original

If you wish to access this.map within the event handler, consider using arrow functions instead:

  google.maps.event.addListener(marker, 'click', ((marker, i) => {
    return () => {
      infowindow.setContent(infoContent);
      infowindow.open(this.map, marker);
    };
  })(marker, i)

Otherwise, using this. will not correctly reference the current class instance.

Answer 5

Answer №3

My approach involves setting the button's id in the information window and listening for the 'domready' event to ensure that the HTML is ready for manipulation. By using getElementById, the button can be accessed and an event listener for a click event can be added. This allows for calling a function defined in a separate file.

const infoWindowContent = '<h6>' + community.typeOfCommunity + '</h6>' +
          '<p>' + community.address.name + ' ' + community.streetNumber + ', ' + community.city + '</p>' +
          '<p>Manager: ' + community.manager.fullName + '</p>' +
          '<button  id="infoWindowButton">More info</button>';
        const infoWindow = new google.maps.InfoWindow({
          content: infoWindowContent
        });

        marker.addListener('click', () => {
          infoWindow.open(this.map, marker);
        });

        infoWindow.addListener('domready', () => {
          document.getElementById("infoWindowButton").addEventListener("click", () => {
            this.myFunction();
          });
        });

Answer 6

My approach involves setting the button's id in the information window and listening for the 'domready' event to ensure that the HTML is ready for manipulation. By using getElementById, the button can be accessed and an event listener for a click event can be added. This allows for calling a function defined in a separate file.

const infoWindowContent = '<h6>' + community.typeOfCommunity + '</h6>' +
          '<p>' + community.address.name + ' ' + community.streetNumber + ', ' + community.city + '</p>' +
          '<p>Manager: ' + community.manager.fullName + '</p>' +
          '<button  id="infoWindowButton">More info</button>';
        const infoWindow = new google.maps.InfoWindow({
          content: infoWindowContent
        });

        marker.addListener('click', () => {
          infoWindow.open(this.map, marker);
        });

        infoWindow.addListener('domready', () => {
          document.getElementById("infoWindowButton").addEventListener("click", () => {
            this.myFunction();
          });
        });

Answer 7

Answer №4

Kindly attempt this comprehensive solution to address the query.

let infoWindow = new google.maps.InfoWindow({});

    for (let i = 0; i < locations.length; i++) {

        let locLatLng = new google.maps.LatLng(locations[i].latitude, locations[i].longitude);
        let infoContent = '<div style="padding: 0.5em;">' +
            '<h5 id="lt" style="font-size: 12px">'+locations[i].id +'</h5>'+
            '<button id="btn" style="font-size: 8px;" >Click</button>'+
            '</div>'

        marker = new google.maps.Marker({
            position: locLatLng,
            map: this.map
        });

        google.maps.event.addListener(marker, 'click', (function(marker, i) {
            return function() {
                infowindow.setContent(infoContent);
                infowindow.open(this.map, marker);
            };
        })(marker, i));
    }

    infowindow.addListener('domready', () => {
        var val = document.getElementById('lt').innerHTML;
        document.getElementById("btn").addEventListener("click", () => {
            this.myFunction(val);
        });
    });

Answer 8

Kindly attempt this comprehensive solution to address the query.

let infoWindow = new google.maps.InfoWindow({});

    for (let i = 0; i < locations.length; i++) {

        let locLatLng = new google.maps.LatLng(locations[i].latitude, locations[i].longitude);
        let infoContent = '<div style="padding: 0.5em;">' +
            '<h5 id="lt" style="font-size: 12px">'+locations[i].id +'</h5>'+
            '<button id="btn" style="font-size: 8px;" >Click</button>'+
            '</div>'

        marker = new google.maps.Marker({
            position: locLatLng,
            map: this.map
        });

        google.maps.event.addListener(marker, 'click', (function(marker, i) {
            return function() {
                infowindow.setContent(infoContent);
                infowindow.open(this.map, marker);
            };
        })(marker, i));
    }

    infowindow.addListener('domready', () => {
        var val = document.getElementById('lt').innerHTML;
        document.getElementById("btn").addEventListener("click", () => {
            this.myFunction(val);
        });
    });

Answer 9

Answer №5

After doing extensive research, I have discovered the solution:

To achieve the desired outcome, you need to utilize: $compile(htmlString)(scope)

For instance, consider implementing the following code snippet:

var detailsButton = '<button ng-click="myFunction(' + locations[i].id + ')">Details</button>';

var scope = angular.element(document.getElementById('anyElementId')).scope();
var compiledResult = $compile(htmlElement)(scope);

Lastly, make use of:

infowindow.setContent(compiledResult[0]);

Voila! That should do the trick.

Answer 10

After doing extensive research, I have discovered the solution:

To achieve the desired outcome, you need to utilize: $compile(htmlString)(scope)

For instance, consider implementing the following code snippet:

var detailsButton = '<button ng-click="myFunction(' + locations[i].id + ')">Details</button>';

var scope = angular.element(document.getElementById('anyElementId')).scope();
var compiledResult = $compile(htmlElement)(scope);

Lastly, make use of:

infowindow.setContent(compiledResult[0]);

Voila! That should do the trick.

Is there a way to invoke an Angular2 function from within a Google Map infowindow?

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Similar questions

Is it possible to remove the address bar from appearing on a browser when a page loads?

Tips for executing embedded scripts within templates

Troubleshooting jQuery.ajax - Why won't it function properly?

What steps do I need to take to integrate the Firebase Admin SDK into my Angular project?

Simplified React conditional rendering made easy

Encountering a Typescript error while attempting to utilize mongoose functions

Updating the default color of selected text within a webpage's content

Ways to initiate JavaScript event upon clearing input form field

Is it possible to utilize a slot within a Vue.js loop?

Waiting for a response from an API with the help of nodejs

Is utilizing React's useEffect hook along with creating your own asynchronous function to fetch data the best approach

The JQuery File-Upload plugin remains inactive even after a file has been chosen

Unforeseen outcomes arise when toggling expansion in JavaScript

Displaying PHP content using JavaScript classes

Use Javascript to display specific div elements by clicking a button

The fieldset css in PrimeNG differs from the website's original design

Utilize JavaScript to extract and exhibit various SQL records stored within a multidimensional array

Utilize clipboard functionality in automated tests while using Selenium WebDriver in conjunction with JavaScript

Angular 8 date validation for start date and end date on a mat-date-picker

Utilizing PHP to fetch data from a separate webpage