mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-24 10:37:20 +00:00
71 lines
2.2 KiB
JavaScript
71 lines
2.2 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/linkcatcher.js
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type: application/javascript
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module-type: widget
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Implements the linkcatcher widget. It intercepts navigation events from its children, preventing normal navigation, and instead stores the name of the target tiddler in the text reference specified in the `to` attribute.
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Using the linkcatcher widget allows the linking mechanism to be used for tasks like selecting the current theme tiddler from a list.
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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 LinkCatcherWidget = function(renderer) {
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// Save state
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this.renderer = renderer;
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// Generate child nodes
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this.generate();
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};
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LinkCatcherWidget.prototype.generate = function() {
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// Get our attributes
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this.to = this.renderer.getAttribute("to");
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this.message = this.renderer.getAttribute("message");
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this.set = this.renderer.getAttribute("set");
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this.setTo = this.renderer.getAttribute("setTo");
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// Set the element
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this.tag = "div";
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this.attributes = {
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"class": "tw-linkcatcher"
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};
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this.children = this.renderer.renderTree.createRenderers(this.renderer,this.renderer.parseTreeNode.children);
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this.events = [
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{name: "tw-navigate", handlerObject: this, handlerMethod: "handleNavigateEvent"}
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];
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};
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LinkCatcherWidget.prototype.refreshInDom = function(changedAttributes,changedTiddlers) {
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// We don't need to refresh ourselves, so just refresh any child nodes
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$tw.utils.each(this.children,function(node) {
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if(node.refreshInDom) {
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node.refreshInDom(changedTiddlers);
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}
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});
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};
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// Navigate to a specified tiddler
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LinkCatcherWidget.prototype.handleNavigateEvent = function(event) {
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if(this.to) {
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this.renderer.renderTree.wiki.setTextReference(this.to,event.navigateTo,this.renderer.tiddlerTitle);
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}
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if(this.message) {
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$tw.utils.dispatchCustomEvent(this.renderer.domNode,this.message,{
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param: event.navigateTo,
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tiddlerTitle: this.renderer.tiddlerTitle
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});
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}
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if(this.set) {
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var tiddler = this.renderer.renderTree.wiki.getTiddler(this.set);
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this.renderer.renderTree.wiki.addTiddler(new $tw.Tiddler(tiddler,{title: this.set, text: this.setTo}));
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}
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event.stopPropagation();
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return false;
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};
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exports.linkcatcher = LinkCatcherWidget;
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})(); |