65 lines
1.4 KiB
JavaScript
65 lines
1.4 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/error.js
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type: application/javascript
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module-type: widget
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Error widget
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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 ErrorWidget = function(parseTreeNode,options) {
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options.hasDom = true;
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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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ErrorWidget.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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ErrorWidget.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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var message = this.getAttribute("$message","Unknown error"),
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domNode = this.document.createElement("span");
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domNode.appendChild(this.document.createTextNode(message));
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domNode.className = "tc-error";
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parent.insertBefore(domNode,nextSibling);
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this.domNodes.push(domNode);
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};
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/*
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Compute the internal state of the widget
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*/
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ErrorWidget.prototype.execute = function() {
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// Nothing to do for a text node
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};
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/*
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Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
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*/
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ErrorWidget.prototype.refresh = function(changedTiddlers) {
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var changedAttributes = this.computeAttributes();
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if(changedAttributes["$message"]) {
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this.refreshSelf();
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return true;
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} else {
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return false;
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}
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};
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exports.error = ErrorWidget;
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})();
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