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TiddlyWiki5/core/modules/widgets/setvariable.js
2013-11-15 18:31:39 +00:00

66 lines
1.5 KiB
JavaScript
Executable File

/*\
title: $:/core/modules/widgets/set.js
type: application/javascript
module-type: widget
Set variable widget
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var Widget = require("$:/core/modules/widgets/widget.js").widget;
var SetWidget = function(parseTreeNode,options) {
this.initialise(parseTreeNode,options);
};
/*
Inherit from the base widget class
*/
SetWidget.prototype = new Widget();
/*
Render this widget into the DOM
*/
SetWidget.prototype.render = function(parent,nextSibling) {
this.parentDomNode = parent;
this.computeAttributes();
this.execute();
this.renderChildren(parent,nextSibling);
};
/*
Compute the internal state of the widget
*/
SetWidget.prototype.execute = function() {
// Get our parameters
this.setName = this.getAttribute("name","currentTiddler");
this.setValue = this.getAttribute("value");
// Set context variable
this.setVariable(this.setName,this.setValue,this.parseTreeNode.params);
// Construct the child widgets
this.makeChildWidgets();
};
/*
Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
*/
SetWidget.prototype.refresh = function(changedTiddlers) {
var changedAttributes = this.computeAttributes();
if(changedAttributes.name || changedAttributes.value) {
this.refreshSelf();
return true;
} else {
return this.refreshChildren(changedTiddlers);
}
};
exports.setvariable = SetWidget;
exports.set = SetWidget;
})();