Added new storyview that shows tiddlers stacked up sideways

core/modules/macros/story/views/sideways.js

@@ -0,0 +1,45 @@
+/*\
+title: $:/core/modules/macros/story/views/sideways.js
+type: application/javascript
+module-type: storyview
+
+A storyview that shows a sequence of tiddlers as horizontally stacked blocks
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+function setStoryElementStyles(e) {
+	e.style.display = "inline-block";
+	e.style.width = "350px";
+	e.style.verticalAlign = "top";
+	e.style.whiteSpace = "normal";
+}
+
+function SidewaysView(story) {
+	this.story = story;
+	var wrapper = this.story.child.children[1].domNode;
+	// Scroll horizontally
+	wrapper.style.whiteSpace = "nowrap";
+	// Make all the tiddlers position absolute, and hide all but the first one
+	for(var t=0; t<wrapper.children.length; t++) {
+		setStoryElementStyles(wrapper.children[t]);
+	}
+}
+
+/*
+Visualise navigation to the specified tiddler macro, optionally specifying a source node for the visualisation
+	targetTiddlerNode: tree node of the tiddler macro we're navigating to
+	isNew: true if the node we're navigating to has just been added to the DOM
+	sourceNode: optional tree node that initiated the navigation
+*/
+SidewaysView.prototype.navigate = function(targetTiddlerNode,isNew,sourceEvent) {
+	setStoryElementStyles(targetTiddlerNode.domNode);
+};
+
+exports.sideways = SidewaysView;
+
+})();