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Fixed Context menu example to work with all engines (#172)
* Fixed Context menu example to work with all engines * minor Signed-off-by: Daniele Bacarella <[email protected]> --------- Signed-off-by: Daniele Bacarella <[email protected]>
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‎context-menu/demo.html

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Original file line numberDiff line numberDiff line change
@@ -3,14 +3,14 @@
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=yes">
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<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
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<title>Context menu</title>
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<link rel="stylesheet" type="text/css" href="https://js.api.here.com/v3/3.1/mapsjs-ui.css" />
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<link rel="stylesheet" type="text/css" href="demo.css" />
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<link rel="stylesheet" type="text/css" href="styles.css" />
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<link rel="stylesheet" type="text/css" href="../template.css" />
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<script type="text/javascript" src='../test-credentials.js'></script>
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<script type="text/javascript" src='../js-examples-rendering-helpers/iframe-height.js'></script>
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<script type="text/javascript" src='../js-examples-rendering-helpers/iframe-height.js'></script>
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<script type="text/javascript" src="https://js.api.here.com/v3/3.1/mapsjs-core.js"></script>
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<script type="text/javascript" src="https://js.api.here.com/v3/3.1/mapsjs-service.js"></script>
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<script type="text/javascript" src="https://js.api.here.com/v3/3.1/mapsjs-ui.js"></script>
@@ -25,7 +25,7 @@ <h1>Context menu</h1>
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</p>
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<div id="map"></div>
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<h3>Code</h3>
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<p>In order to add context menu items, first you need to subscribe to contextmenu event. ContextMenuEvent has a special items property, where menu items are stored. Each menu item is an instance of H.util.ContextItem class.
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<p>In order to add context menu items, first you need to subscribe to contextmenu event. ContextMenuEvent has a special items property, where menu items are stored. Each menu item is an instance of H.util.ContextItem class.
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</p>
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<p>By default new menu items does not replace the previous ones, instead all items are collected and displayed together. However you can easily modify the items array to change this behaviour. </p>
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<p>Context items can be visually separated from each other by using the H.util.ContextItem.SEPARATOR.

‎context-menu/demo.js

Lines changed: 52 additions & 72 deletions
Original file line numberDiff line numberDiff line change
@@ -9,83 +9,63 @@
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function addContextMenus(map) {
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// First we need to subscribe to the "contextmenu" event on the map
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map.addEventListener('contextmenu', function (e) {
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// As we already handle contextmenu event callback on circle object,
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// we don't do anything if target is different than the map.
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if (e.target !== map) {
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return;
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}
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// Create and push the proper context items according to the event target
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if (e.target instanceof H.map.Circle) {
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// Add a single item to the context menu displaying "Remove circle"
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e.items.push(
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new H.util.ContextItem({
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label: 'Remove circle',
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callback: function () {
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map.removeObject(e.target);
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}
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})
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);
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} else {
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// "contextmenu" event might be triggered not only by a pointer,
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// but a keyboard button as well. That's why ContextMenuEvent
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// doesn't have a "currentPointer" property.
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// Instead it has "viewportX" and "viewportY" properties
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// for the associates position.
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// "contextmenu" event might be triggered not only by a pointer,
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// but a keyboard button as well. That's why ContextMenuEvent
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// doesn't have a "currentPointer" property.
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// Instead it has "viewportX" and "viewportY" properties
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// for the associates position.
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// Get geo coordinates from the screen coordinates.
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var coord = map.screenToGeo(e.viewportX, e.viewportY);
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// Get geo coordinates from the screen coordinates.
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var coord = map.screenToGeo(e.viewportX, e.viewportY);
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// In order to add menu items, you have to push them to the "items"
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// property of the event object. That has to be done synchronously, otherwise
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// the ui component will not contain them. However you can change the menu entry
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// text asynchronously.
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e.items.push(
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// Create a menu item, that has only a label,
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// which displays the current coordinates.
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new H.util.ContextItem({
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label: [
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Math.abs(coord.lat.toFixed(4)) + ((coord.lat > 0) ? 'N' : 'S'),
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Math.abs(coord.lng.toFixed(4)) + ((coord.lng > 0) ? 'E' : 'W')
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].join(' ')
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}),
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// Create an item, that will change the map center when clicking on it.
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new H.util.ContextItem({
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label: 'Center map here',
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callback: function () {
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map.setCenter(coord, true);
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}
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}),
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// It is possible to add a seperator between items in order to logically group them.
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H.util.ContextItem.SEPARATOR,
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// This menu item will add a new circle to the map
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new H.util.ContextItem({
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label: 'Add circle',
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callback: function () {
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// Create and add the circle to the map
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map.addObject(new H.map.Circle(coord, 5000));
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}
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})
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);
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}
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// In order to add menu items, you have to push them to the "items"
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// property of the event object. That has to be done synchronously, otherwise
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// the ui component will not contain them. However you can change the menu entry
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// text asynchronously.
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e.items.push(
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// Create a menu item, that has only a label,
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// which displays the current coordinates.
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new H.util.ContextItem({
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label: [
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Math.abs(coord.lat.toFixed(4)) + ((coord.lat > 0) ? 'N' : 'S'),
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Math.abs(coord.lng.toFixed(4)) + ((coord.lng > 0) ? 'E' : 'W')
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].join(' ')
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}),
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// Create an item, that will change the map center when clicking on it.
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new H.util.ContextItem({
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label: 'Center map here',
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callback: function() {
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map.setCenter(coord, true);
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}
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}),
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// It is possible to add a seperator between items in order to logically group them.
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H.util.ContextItem.SEPARATOR,
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// This menu item will add a new circle to the map
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new H.util.ContextItem({
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label: 'Add circle',
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callback: addCircle.bind(map, coord)
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})
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);
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});
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}
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/**
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* Adds a circle which has a context menu item to remove itself.
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*
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* @this H.Map
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* @param {H.geo.Point} coord Circle center coordinates
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*/
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function addCircle(coord) {
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// Create a new circle object
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var circle = new H.map.Circle(coord, 5000),
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map = this;
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// Subscribe to the "contextmenu" eventas we did for the map.
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circle.addEventListener('contextmenu', function(e) {
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// Add another menu item,
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// that will be visible only when clicking on this object.
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//
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// New item doesn't replace items, which are added by the map.
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// So we may want to add a separator to between them.
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e.items.push(
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new H.util.ContextItem({
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label: 'Remove',
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callback: function() {
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map.removeObject(circle);
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}
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})
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);
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});
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// Make the circle visible, by adding it to the map
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map.addObject(circle);
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}
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/**
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* Boilerplate map initialization code starts below:
@@ -99,7 +79,7 @@ var defaultLayers = platform.createDefaultLayers();
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// Step 2: initialize a map
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var map = new H.Map(document.getElementById('map'), defaultLayers.vector.normal.map, {
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center: {lat: 52.55006203880433, lng: 13.27548854220585},
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center: { lat: 52.55006203880433, lng: 13.27548854220585 },
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zoom: 9,
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pixelRatio: window.devicePixelRatio || 1
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});

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