refactor.

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

-var utils = {
-	groupBy : function(xs, key) {
-		return xs.reduce(function(rv, x) {
-		(rv[x[key]] = rv[x[key]] || []).push(x);
-		return rv;
-		}, {});
-	},
+var utils = {};
+
+utils.groupBy = function(xs, key) {
+	return xs.reduce(function(rv, x) {
+	(rv[x[key]] = rv[x[key]] || []).push(x);
+	return rv;
+	}, {});
+}
 	
-	// Copies a string to the clipboard. Must be called from within an
-	// event handler such as click. May return false if it failed, but
-	// this is not always possible. Browser support for Chrome 43+,
-	// Firefox 42+, Safari 10+, Edge and Internet Explorer 10+.
-	// Internet Explorer: The clipboard feature may be disabled by
-	// an administrator. By default a prompt is shown the first
-	// time the clipboard is used (per session).
-	// https://stackoverflow.com/a/33928558/6419007
-	copyToClipboard : function(text, log) {
-		if (window.clipboardData && window.clipboardData.setData) {
-			// Internet Explorer-specific code path to prevent textarea being shown while dialog is visible.
-			return window.clipboardData.setData("Text", text);
+// Copies a string to the clipboard. Must be called from within an
+// event handler such as click. May return false if it failed, but
+// this is not always possible. Browser support for Chrome 43+,
+// Firefox 42+, Safari 10+, Edge and Internet Explorer 10+.
+// Internet Explorer: The clipboard feature may be disabled by
+// an administrator. By default a prompt is shown the first
+// time the clipboard is used (per session).
+// https://stackoverflow.com/a/33928558/6419007
+utils.copyToClipboard = function(text, log) {
+	if (window.clipboardData && window.clipboardData.setData) {
+		// Internet Explorer-specific code path to prevent textarea being shown while dialog is visible.
+		return window.clipboardData.setData("Text", text);
+	}
+	else if (document.queryCommandSupported && document.queryCommandSupported("copy")) {
+		var textarea = document.createElement("textarea");
+		textarea.textContent = text;
+		textarea.style.position = "fixed";  // Prevent scrolling to bottom of page in Microsoft Edge.
+		document.body.appendChild(textarea);
+		textarea.select();
+		try {
+			document.execCommand("copy");  // Security exception may be thrown by some browsers.
+			log.append("<h2 class='ok'>Coordinates copied to clipboard!</h2><br/>\n");
+			return;
+		}
+		catch (ex) {
+			console.warn("Copy to clipboard failed.", ex);
+			return prompt("Copy to clipboard: Ctrl+C, Enter", text);
 		}
-		else if (document.queryCommandSupported && document.queryCommandSupported("copy")) {
-			var textarea = document.createElement("textarea");
-			textarea.textContent = text;
-			textarea.style.position = "fixed";  // Prevent scrolling to bottom of page in Microsoft Edge.
-			document.body.appendChild(textarea);
-			textarea.select();
-			try {
-				document.execCommand("copy");  // Security exception may be thrown by some browsers.
-				log.append("<h2 class='ok'>Coordinates copied to clipboard!</h2><br/>\n");
-				return;
-			}
-			catch (ex) {
-				console.warn("Copy to clipboard failed.", ex);
-				return prompt("Copy to clipboard: Ctrl+C, Enter", text);
-			}
-			finally {
-				document.body.removeChild(textarea);
-			}
+		finally {
+			document.body.removeChild(textarea);
 		}
-	},
+	}
+}
 	
-	read_kml: function(url){
-		return new ol.source.KML({
-			projection : ol.proj.get('EPSG:3857'),
-			url : url,
-			extractAttributes : false,
-			extractStyles : false
-		});
-	},
+utils.read_kml = function(url){
+	return new ol.source.KML({
+		projection : ol.proj.get('EPSG:3857'),
+		url : url,
+		extractAttributes : false,
+		extractStyles : false
+	});
+}
 	
-	polygon_style: function(color, alpha) {
-		return new ol.style.Style({
-			fill : new ol.style.Fill({
-				color : 'rgba(255, 255, 255,' + alpha + ')'
-			}),
-			stroke : new ol.style.Stroke({
-				color : color,
-				width : 2,
-				lineDash : [ 5, 10 ]
-			}),
-		});
-	}
-};
\ No newline at end of file
+utils.polygon_style = function(color, alpha) {
+	return new ol.style.Style({
+		fill : new ol.style.Fill({
+			color : 'rgba(255, 255, 255,' + alpha + ')'
+		}),
+		stroke : new ol.style.Stroke({
+			color : color,
+			width : 2,
+			lineDash : [ 5, 10 ]
+		}),
+	});
+}