Adding LayerSwitcher

src/main/resources/eu/simstadt/regionchooser/website/index.html

@@ -16,7 +16,9 @@
 		<script type="text/javascript" src="script/jquery-1.4.2.min.js"></script>
 		 <!-- OpenLayers v3.4.0. API doc : https://geoadmin.github.io/ol3/apidoc/ -->
 		<script src="script/ol.js" type="text/javascript"></script>
+		<script src="script/ol-layerswitcher.js"></script>
 		<link rel="stylesheet" href="style/ol.css" type="text/css" />
+		<link rel="stylesheet" href="style/ol-layerswitcher.css" type="text/css" />
 		<script src="script/turf.js" type="text/javascript"></script>
 		<script src="script/every_epsg.js" type="text/javascript"></script>
 	</head>

src/main/resources/eu/simstadt/regionchooser/website/script/simstadt_openlayers.js

@@ -25,7 +25,30 @@ const regionChooser = (function () {
 
 	var osm_layer = new ol.layer.Tile({
 		// NOTE: when set to "anonymous" (the default), it could lead to the Browser not displaying any map
-		source: new ol.source.OSM({crossOrigin: null})
+		source: new ol.source.OSM({crossOrigin: null}),
+		title: "OpenStreetMap",
+		type: 'base'
+	});
+	
+	var arcgis_terrain = new ol.layer.Tile({
+	    source: new ol.source.XYZ({
+			attributions: "",
+			url: 'https://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer/tile/{z}/{y}/{x}',
+	    }),
+		title: "Terrain",
+		type: 'base',
+		visible: false,
+	});
+	
+	var arcgis_satellite = new ol.layer.Tile({
+		// TODO: Change polygon color when selected
+	    source: new ol.source.XYZ({
+			attributions: "",
+			url: 'https://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}',
+	    }),
+		title: "Satellite",
+		type: 'base',
+		visible: false,
 	});
 
 	var kml_source = utils.read_kml(fromJavaFX ? undefined : 'data/citygml_hulls.kml');
@@ -59,11 +82,14 @@ const regionChooser = (function () {
 
 	var map = new ol.Map({
 		target: 'map',
-		layers: [osm_layer, kml_layer, intersections_layer],
+		layers: [osm_layer, arcgis_satellite, arcgis_terrain, kml_layer, intersections_layer],
 		interactions: ol.interaction.defaults({
 			keyboard: true
 		})
 	});
+	
+	const layerSwitcher = new LayerSwitcher();
+	map.addControl(layerSwitcher);
 
 	const geoJsonFormat = new ol.format.GeoJSON();
 	const kmlFormat = new ol.format.KML({ extractStyles: false });

src/main/resources/eu/simstadt/regionchooser/website/style/ol-layerswitcher.css

+.layer-switcher {
+  position: absolute;
+  top: 3.5em;
+  right: 0.5em;
+  text-align: left;
+}
+
+.layer-switcher .panel {
+  margin: 0;
+  border: 4px solid #eee;
+  border-radius: 4px;
+  background-color: white;
+  display: none;
+  max-height: inherit;
+  height: 100%;
+  box-sizing: border-box;
+  overflow-y: auto;
+}
+
+.layer-switcher button {
+  float: right;
+  z-index: 1;
+  width: 38px;
+  height: 38px;
+  background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAMAAABEpIrGAAACE1BMVEX///8A//8AgICA//8AVVVAQID///8rVVVJtttgv98nTmJ2xNgkW1ttyNsmWWZmzNZYxM4gWGgeU2JmzNNr0N1Rwc0eU2VXxdEhV2JqytQeVmMhVmNoydUfVGUgVGQfVGQfVmVqy9hqy9dWw9AfVWRpydVry9YhVmMgVGNUw9BrytchVWRexdGw294gVWQgVmUhVWPd4N6HoaZsy9cfVmQgVGRrytZsy9cgVWQgVWMgVWRsy9YfVWNsy9YgVWVty9YgVWVry9UgVWRsy9Zsy9UfVWRsy9YgVWVty9YgVWRty9Vsy9aM09sgVWRTws/AzM0gVWRtzNYgVWRuy9Zsy9cgVWRGcHxty9bb5ORbxdEgVWRty9bn6OZTws9mydRfxtLX3Nva5eRix9NFcXxOd4JPeINQeIMiVmVUws9Vws9Vw9BXw9BYxNBaxNBbxNBcxdJexdElWWgmWmhjyNRlx9IqXGtoipNpytVqytVryNNrytZsjZUuX210k5t1y9R2zNR3y9V4lp57zth9zdaAnKOGoaeK0NiNpquV09mesrag1tuitbmj1tuj19uktrqr2d2svcCu2d2xwMO63N+7x8nA3uDC3uDFz9DK4eHL4eLN4eIyYnDX5OM5Z3Tb397e4uDf4uHf5uXi5ePi5+Xj5+Xk5+Xm5+Xm6OY6aHXQ19fT4+NfhI1Ww89gx9Nhx9Nsy9ZWw9Dpj2abAAAAWnRSTlMAAQICAwQEBgcIDQ0ODhQZGiAiIyYpKywvNTs+QklPUlNUWWJjaGt0dnd+hIWFh4mNjZCSm6CpsbW2t7nDzNDT1dje5efr7PHy9PT29/j4+Pn5+vr8/f39/f6DPtKwAAABTklEQVR4Xr3QVWPbMBSAUTVFZmZmhhSXMjNvkhwqMzMzMzPDeD+xASvObKePPa+ffHVl8PlsnE0+qPpBuQjVJjno6pZpSKXYl7/bZyFaQxhf98hHDKEppwdWIW1frFnrxSOWHFfWesSEWC6R/P4zOFrix3TzDFLlXRTR8c0fEEJ1/itpo7SVO9Jdr1DVxZ0USyjZsEY5vZfiiAC0UoTGOrm9PZLuRl8X+Dq1HQtoFbJZbv61i+Poblh/97TC7n0neCcK0ETNUrz1/xPHf+DNAW9Ac6t8O8WH3Vp98f5lCaYKAOFZMLyHL4Y0fe319idMNgMMp+zWVSybUed/+/h7I4wRAG1W6XDy4XmjR9HnzvDRZXUAYDFOhC1S/Hh+fIXxen+eO+AKqbs+wAo30zDTDvDxKoJN88sjUzDFAvBzEUGFsnADoIvAJzoh2BZ8sner+Ke/vwECuQAAAABJRU5ErkJggg==')
+    /*logo.png*/;
+  background-repeat: no-repeat;
+  background-position: 2px;
+  background-color: white;
+  color: black;
+  border: none;
+}
+
+.layer-switcher button:focus,
+.layer-switcher button:hover {
+  background-color: white;
+}
+
+.layer-switcher.shown {
+  overflow-y: hidden;
+  display: flex;
+  flex-direction: column;
+  max-height: calc(100% - 5.5em);
+}
+
+.layer-switcher.shown.ol-control {
+  background-color: transparent;
+}
+
+.layer-switcher.shown.ol-control:hover {
+  background-color: transparent;
+}
+.layer-switcher.shown .panel {
+  display: block;
+}
+
+.layer-switcher.shown button {
+  display: none;
+}
+
+.layer-switcher.shown.layer-switcher-activation-mode-click > button {
+  display: block;
+  background-image: unset;
+  right: 2px;
+  position: absolute;
+  background-color: #eee;
+  margin: 1px;
+}
+
+.layer-switcher.shown button:focus,
+.layer-switcher.shown button:hover {
+  background-color: #fafafa;
+}
+
+.layer-switcher ul {
+  list-style: none;
+  margin: 1.6em 0.4em;
+  padding-left: 0;
+}
+.layer-switcher ul ul {
+  padding-left: 1.2em;
+  margin: 0.1em 0 0 0;
+}
+.layer-switcher li.group + li.group {
+  margin-top: 0.4em;
+}
+.layer-switcher li.group + li.layer-switcher-base-group {
+}
+
+.layer-switcher li.group > label {
+  font-weight: bold;
+}
+
+.layer-switcher.layer-switcher-group-select-style-none li.group > label {
+  padding-left: 1.2em;
+}
+
+.layer-switcher li {
+  position: relative;
+  margin-top: 0.3em;
+}
+
+.layer-switcher li input {
+  position: absolute;
+  left: 1.2em;
+  height: 1em;
+  width: 1em;
+  font-size: 1em;
+}
+.layer-switcher li label {
+  padding-left: 2.7em;
+  padding-right: 1.2em;
+  display: inline-block;
+  margin-top: 1px;
+}
+
+.layer-switcher label.disabled {
+  opacity: 0.4;
+}
+
+.layer-switcher input {
+  margin: 0px;
+}
+
+.layer-switcher.touch ::-webkit-scrollbar {
+  width: 4px;
+}
+
+.layer-switcher.touch ::-webkit-scrollbar-track {
+  -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
+  border-radius: 10px;
+}
+
+.layer-switcher.touch ::-webkit-scrollbar-thumb {
+  border-radius: 10px;
+  -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.5);
+}
+
+li.layer-switcher-base-group > label {
+  padding-left: 1.2em;
+}
+
+.layer-switcher .group button {
+  position: absolute;
+  left: 0;
+  display: inline-block;
+  vertical-align: top;
+  float: none;
+  font-size: 1em;
+  width: 1em;
+  height: 1em;
+  margin: 0;
+  background-position: center 2px;
+  background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAW0lEQVR4nGNgGAWMyBwXFxcGBgaGeii3EU0tXHzPnj1wQRYsihqQ+I0ExDEMQAYNONgoAN0AmMkNaDSyQSheY8JiaCMOGzE04zIAmyFYNTMw4A+DRhzsUUBtAADw4BCeIZkGdwAAAABJRU5ErkJggg==');
+  -webkit-transition: -webkit-transform 0.2s ease-in-out;
+  -ms-transition: -ms-transform 0.2s ease-in-out;
+  transition: transform 0.2s ease-in-out;
+}
+
+.layer-switcher .group.layer-switcher-close button {
+  transform: rotate(-90deg);
+  -webkit-transform: rotate(-90deg);
+}
+
+.layer-switcher .group.layer-switcher-fold.layer-switcher-close > ul {
+  overflow: hidden;
+  height: 0;
+}
+
+/*layerswitcher on the right*/
+.layer-switcher.shown.layer-switcher-activation-mode-click {
+  padding-left: 34px;
+}
+.layer-switcher.shown.layer-switcher-activation-mode-click > button {
+  left: 0;
+  border-right: 0;
+}
+
+/*layerswitcher on the left*/
+/*
+.layer-switcher.shown.layer-switcher-activation-mode-click {
+  padding-right: 34px;
+}
+.layer-switcher.shown.layer-switcher-activation-mode-click > button {
+  right: 0;
+  border-left: 0;
+}
+*/