mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-10-03 09:20:46 +00:00
740627795f
It thereby reduces code complexity that would arise when setting
many variables using "<$set>".
```
\define helloworld() Hello world!
<$vars greeting="Hi" me={{!!title}} sentence=<<helloworld>>>
<<greeting>>! I am <<me>> and I say: <<sentence>>
</$vars>
```
How this Widget differs from the set widget:
* Variables may be created by using the "key=value" notation
that you already know from widgets like action-setfield.
* You cannot specify a fallback ("emptyValue")
* You cannot use a filter to produce a conditional variable assignement
Original discussion that led to the creation of this widget:
https://github.com/Jermolene/TiddlyWiki5/issues/1610
76 lines
1.6 KiB
JavaScript
76 lines
1.6 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/vars.js
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type: application/javascript
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module-type: widget
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This widget allows the user to set multiple variables in one go.
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```
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\define helloworld() Hello world!
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<$vars greeting="Hi" me={{!!title}} sentence=<<helloworld>>>
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<<greeting>>! I am <<me>> and I say: <<sentence>>
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</$vars>
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```
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var Widget = require("$:/core/modules/widgets/widget.js").widget;
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var VarsWidget = function(parseTreeNode,options) {
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// Call the constructor
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Widget.call(this);
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// Initialise
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this.initialise(parseTreeNode,options);
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};
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/*
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Inherit from the base widget class
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*/
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VarsWidget.prototype = Object.create(Widget.prototype);
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/*
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Render this widget into the DOM
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*/
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VarsWidget.prototype.render = function(parent,nextSibling) {
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this.parentDomNode = parent;
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this.computeAttributes();
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this.execute();
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this.renderChildren(parent,nextSibling);
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};
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/*
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Compute the internal state of the widget
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*/
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VarsWidget.prototype.execute = function() {
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// Parse variables
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var self = this;
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$tw.utils.each(this.attributes,function(val,key) {
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if(key.charAt(0) !== "$") {
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self.setVariable(key,val);
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}
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});
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// Construct the child widgets
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this.makeChildWidgets();
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};
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/*
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Refresh the widget by ensuring our attributes are up to date
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*/
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VarsWidget.prototype.refresh = function(changedTiddlers) {
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var changedAttributes = this.computeAttributes();
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if(Object.keys(changedAttributes).length) {
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this.refreshSelf();
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return true;
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}
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return this.refreshChildren(changedTiddlers);
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};
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exports["vars"] = VarsWidget;
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})();
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