index.html

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@v8.1.0/ol.css" />
        <script src="https://cdn.jsdelivr.net/npm/ol@v8.1.0/dist/ol.js"></script>
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Custom Context Menu for Openlayers</title>
        <style>
            html,
            body {
                margin: 0;
                height: 100%;
                font: 1em/1.5 BlinkMacSystemFont, -apple-system, 'Segoe UI', 'Roboto', 'Oxygen',
                    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', 'Helvetica',
                    'Arial', sans-serif;
                color: #222;
                font-weight: 400;
            }
            .main-container {
                height: 100%;
                display: flex;
            }

            .left-container {
                flex: 1 1 0;
                padding: 5px;
            }

            .right-container {
                flex: 1 1 0;
                display: flex;
                flex-direction: column;
                padding: 5px;
            }
            #map1,
            #map2 {
                width: 100%;
                height: 100%;
            }
        </style>
    </head>

    <body>
        <div class="main-container">
            <div class="left-container">
                <div id="map1"></div>
            </div>
            <div class="right-container">
                <div id="map2"></div>
            </div>
        </div>
        <script type="module">
            import Map from 'ol/Map.js';
            import View from 'ol/View.js';
            import Feature from 'ol/Feature.js';
            import Point from 'ol/geom/Point.js';
            import { transform } from 'ol/proj';
            import { format } from 'ol/coordinate';
            import { Icon, Text, Fill, Stroke, Style } from 'ol/style.js';
            import { OSM, Vector as VectorSource } from 'ol/source.js';
            import { Tile as TileLayer, Vector as VectorLayer } from 'ol/layer.js';
            import ContextMenu from './src/main.ts';

            const vectorLayer = new VectorLayer({ source: new VectorSource() });

            const map = new Map({
                view: new View({ center: [0, 0], zoom: 2 }),
                target: 'map1',
                layers: [new TileLayer({ source: new OSM() }), vectorLayer],
            });
            const map2 = new Map({
                view: new View({ center: [0, 0], zoom: 2 }),
                target: 'map2',
                layers: [
                    new TileLayer({ source: new OSM() }),
                    new VectorLayer({ source: new VectorSource() }),
                ],
            });

            const pinIcon =
                'https://cdn.jsdelivr.net/gh/jonataswalker/ol-contextmenu@604befc46d737d814505b5d90fc171932f747043/examples/img/pin_drop.png';
            const centerIcon =
                'https://cdn.jsdelivr.net/gh/jonataswalker/ol-contextmenu@604befc46d737d814505b5d90fc171932f747043/examples/img/center.png';
            const listIcon =
                'https://cdn.jsdelivr.net/gh/jonataswalker/ol-contextmenu@604befc46d737d814505b5d90fc171932f747043/examples/img/view_list.png';

            const items = [
                {
                    text: 'Center map here',
                    classname: 'bold',
                    icon: centerIcon,
                    callback: center,
                },
                {
                    text: 'Some Actions',
                    icon: listIcon,
                    items: [
                        {
                            text: 'Some more Actions',
                            items: [
                                {
                                    text: 'Add a Marker',
                                    icon: pinIcon,
                                    callback: marker,
                                },
                            ],
                        },
                        {
                            text: 'Add a Marker',
                            icon: pinIcon,
                            callback: marker,
                        },
                        {
                            text: 'Center map here',
                            icon: centerIcon,
                            callback: center,
                        },
                        {
                            text: 'Add a Marker',
                            icon: pinIcon,
                            callback: marker,
                        },
                        {
                            text: 'Center map here',
                            icon: centerIcon,
                            callback: center,
                        },
                        {
                            text: 'Add a Marker',
                            icon: pinIcon,
                            callback: marker,
                        },
                        {
                            text: 'Center map here',
                            icon: centerIcon,
                            callback: center,
                        },
                        {
                            text: 'Add a Marker',
                            icon: pinIcon,
                            callback: marker,
                        },
                        {
                            text: 'Center map here',
                            icon: centerIcon,
                            callback: center,
                        },
                        {
                            text: 'Add a Marker',
                            icon: pinIcon,
                            callback: marker,
                        },
                    ],
                },
                {
                    text: 'Add a Marker',
                    icon: pinIcon,
                    callback: marker,
                },
                '-', // this is a separator
                {
                    text: 'Some more Actions, loooong',
                    items: [
                        {
                            text: 'Add a Marker',
                            icon: pinIcon,
                            callback: marker,
                        },
                    ],
                },
                '-', // this is a separator
            ];

            const contextmenu = new ContextMenu({
                width: 200,
                defaultItems: true,
            });
            const contextmenu2 = new ContextMenu({
                width: 200,
                defaultItems: true,
            });

            map.addControl(contextmenu);
            map2.addControl(contextmenu2);

            const removeMarkerItem = {
                text: 'Remove this Marker',
                classname: 'marker',
                callback: removeMarker,
            };

            contextmenu.on('open', function (evt) {
                const feature = map.forEachFeatureAtPixel(evt.pixel, (ft) => ft);

                if (feature && feature.get('type') === 'removable') {
                    contextmenu.clear();
                    removeMarkerItem.data = { marker: feature };
                    contextmenu.push(removeMarkerItem);
                } else {
                    contextmenu.clear();
                    contextmenu.extend(items);
                    contextmenu.extend(contextmenu.getDefaultItems());
                }
            });

            map.on('pointermove', function (e) {
                if (e.dragging) return;

                const pixel = map.getEventPixel(e.originalEvent);
                const hit = map.hasFeatureAtPixel(pixel);

                map.getTargetElement().style.cursor = hit ? 'pointer' : '';
            });

            function elastic(t) {
                return Math.pow(2, -10 * t) * Math.sin(((t - 0.075) * (2 * Math.PI)) / 0.3) + 1;
            }

            function center(obj) {
                view.animate({
                    duration: 700,
                    easing: elastic,
                    center: obj.coordinate,
                });
            }

            function removeMarker(obj) {
                vectorLayer.getSource().removeFeature(obj.data.marker);
            }

            function marker(obj) {
                const coord4326 = transform(obj.coordinate, 'EPSG:3857', 'EPSG:4326'),
                    template = 'Coordinate is ({x} | {y})',
                    iconStyle = new Style({
                        image: new Icon({ scale: 0.6, src: pinIcon }),
                        text: new Text({
                            offsetY: 25,
                            text: format(coord4326, template, 2),
                            font: '15px Open Sans,sans-serif',
                            fill: new Fill({ color: '#111' }),
                            stroke: new Stroke({ color: '#eee', width: 2 }),
                        }),
                    }),
                    feature = new Feature({
                        type: 'removable',
                        geometry: new Point(obj.coordinate),
                    });

                feature.setStyle(iconStyle);
                vectorLayer.getSource().addFeature(feature);
            }
        </script>
    </body>
</html>