Introduce <$action-log> widget to help debugging action strings

core/modules/widgets/action-log.js

@@ -0,0 +1,50 @@
+/*\
+title: $:/core/modules/widgets/action-log.js
+type: application/javascript
+module-type: widget
+
+Action widget to log debug messages
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+var Widget = require("$:/core/modules/widgets/widget.js").widget;
+
+var LogWidget = function(parseTreeNode,options) {
+	this.initialise(parseTreeNode,options);
+};
+
+/*
+Inherit from the base widget class
+*/
+LogWidget.prototype = new Widget();
+
+/*
+Render this widget into the DOM
+*/
+LogWidget.prototype.render = function(parent,nextSibling) {
+	this.computeAttributes();
+};
+
+/*
+Refresh the widget by ensuring our attributes are up to date
+*/
+LogWidget.prototype.refresh = function(changedTiddlers) {
+	return this.refreshChildren(changedTiddlers);
+};
+
+/*
+Invoke the action associated with this widget
+*/
+LogWidget.prototype.invokeAction = function(triggeringWidget,event) {
+	$tw.utils.logTable(this.attributes,["attribute name","value"]);
+	return true; // Action was invoked
+};
+
+exports["action-log"] = LogWidget;
+
+})();