mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-08-09 12:40:37 +00:00
94 lines
2.2 KiB
JavaScript
94 lines
2.2 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/data.js
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type: application/javascript
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module-type: widget
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Widget to represent a single item of data
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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 DataWidget = function(parseTreeNode,options) {
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this.dataWidgetTag = parseTreeNode.type;
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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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DataWidget.prototype = new Widget();
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/*
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Render this widget into the DOM
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*/
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DataWidget.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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DataWidget.prototype.execute = function() {
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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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Read the tiddler value(s) from a data widget – must be called after the .render() method
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*/
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DataWidget.prototype.readDataTiddlerValues = function() {
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var self = this;
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// Start with a blank object
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var item = Object.create(null);
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// Read any attributes not prefixed with $
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$tw.utils.each(this.attributes,function(value,name) {
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if(name.charAt(0) !== "$") {
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item[name] = value;
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}
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});
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// Deal with $tiddler or $filter attributes
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var titles;
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if(this.hasAttribute("$tiddler")) {
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titles = [this.getAttribute("$tiddler")];
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} else if(this.hasAttribute("$filter")) {
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titles = this.wiki.filterTiddlers(this.getAttribute("$filter"));
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}
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if(titles) {
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var results = [];
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$tw.utils.each(titles,function(title,index) {
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var tiddler = self.wiki.getTiddler(title),
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fields;
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if(tiddler) {
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fields = tiddler.getFieldStrings();
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}
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results.push($tw.utils.extend({},fields,item));
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})
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return results;
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} else {
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return [item];
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}
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};
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/*
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Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
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*/
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DataWidget.prototype.refresh = function(changedTiddlers) {
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// Refresh our attributes
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var changedAttributes = this.computeAttributes();
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// Refresh our children
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return this.refreshChildren(changedTiddlers);
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};
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exports.data = DataWidget;
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})();
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