Initial Commit

Carried over from the abortive pull request #169

core/modules/utils/fakedom.js

@@ -12,16 +12,27 @@ A barebones implementation of DOM interfaces needed by the rendering mechanism.
 /*global $tw: false */
 "use strict";
 
-var TW_TextNode = function(text) {
-	this.textContent = text;
+// Sequence number used to enable us to track objects for testing
+var sequenceNumber = null;
+
+var bumpSequenceNumber = function(object) {
+	if(sequenceNumber !== null) {
+		object.sequenceNumber = sequenceNumber++;
+	}
 }
 
+var TW_TextNode = function(text) {
+	bumpSequenceNumber(this);
+	this.textContent = text;
+};
+
 var TW_Element = function(tag) {
+	bumpSequenceNumber(this);
 	this.tag = tag;
 	this.attributes = {};
 	this.isRaw = false;
 	this.children = [];
-}
+};
 
 TW_Element.prototype.setAttribute = function(name,value) {
 	if(this.isRaw) {
@@ -39,6 +50,19 @@ TW_Element.prototype.appendChild = function(node) {
 	node.parentNode = this;
 };
 
+TW_Element.prototype.insertBefore = function(node,nextSibling) {
+	if(nextSibling) {
+		var p = this.children.indexOf(nextSibling);
+		if(p !== -1) {
+			this.children.splice(p,0,node);
+		} else {
+			this.appendChild(node);
+		}
+	} else {
+		this.appendChild(node);
+	}
+}
+
 TW_Element.prototype.removeChild = function(node) {
 	var p = this.children.indexOf(node);
 	if(p !== -1) {
@@ -60,6 +84,15 @@ TW_Element.prototype.addEventListener = function(type,listener,useCapture) {
 	// Do nothing
 };
 
+Object.defineProperty(TW_Element.prototype, "className", {
+	get: function() {
+		return this.attributes["class"] || "";
+	},
+    set: function(value) {
+    	this.attributes["class"] = value;
+    }
+});
+
 Object.defineProperty(TW_Element.prototype, "outerHTML", {
     get: function() {
 		var output = [],attr,a,v;
@@ -123,6 +156,9 @@ Object.defineProperty(TW_Element.prototype, "textContent", {
 });
 
 var document = {
+	setSequenceNumber: function(value) {
+		sequenceNumber = value;
+	},
 	createElementNS: function(namespace,tag) {
 		return new TW_Element(tag);
 	},