mirror of
https://github.com/Jermolene/TiddlyWiki5
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109 lines
3.1 KiB
JavaScript
109 lines
3.1 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/checkbox.js
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type: application/javascript
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module-type: widget
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Checkbox 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 CheckboxWidget = function(parseTreeNode,options) {
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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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CheckboxWidget.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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CheckboxWidget.prototype.render = function(parent,nextSibling) {
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// Save the parent dom node
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this.parentDomNode = parent;
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// Compute our attributes
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this.computeAttributes();
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// Execute our logic
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this.execute();
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// Create our elements
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this.labelDomNode = this.document.createElement("label");
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this.inputDomNode = this.document.createElement("input");
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this.inputDomNode.setAttribute("type","checkbox");
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if(this.getValue()) {
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this.inputDomNode.setAttribute("checked","true");
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}
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this.labelDomNode.appendChild(this.inputDomNode);
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this.spanDomNode = this.document.createElement("span");
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this.labelDomNode.appendChild(this.spanDomNode);
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// Add a click event handler
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$tw.utils.addEventListeners(this.inputDomNode,[
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{name: "change", handlerObject: this, handlerMethod: "handleChangeEvent"}
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]);
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// Insert the label into the DOM and render any children
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parent.insertBefore(this.labelDomNode,nextSibling);
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this.renderChildren(this.spanDomNode,null);
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this.domNodes.push(this.labelDomNode);
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};
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CheckboxWidget.prototype.getValue = function() {
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var tiddler = this.wiki.getTiddler(this.checkboxTitle);
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return tiddler ? tiddler.hasTag(this.checkboxTag) : false;
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};
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CheckboxWidget.prototype.handleChangeEvent = function(event) {
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var checked = this.inputDomNode.checked,
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tiddler = this.wiki.getTiddler(this.checkboxTitle);
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if(tiddler && tiddler.hasTag(this.checkboxTag) !== checked) {
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var newTags = (tiddler.fields.tags || []).slice(0),
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pos = newTags.indexOf(this.checkboxTag);
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if(pos !== -1) {
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newTags.splice(pos,1);
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}
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if(checked) {
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newTags.push(this.checkboxTag);
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}
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this.wiki.addTiddler(new $tw.Tiddler(tiddler,{tags: newTags},this.wiki.getModificationFields()));
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}
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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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CheckboxWidget.prototype.execute = function() {
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// Get the parameters from the attributes
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this.checkboxTitle = this.getAttribute("tiddler",this.getVariable("currentTiddler"));
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this.checkboxTag = this.getAttribute("tag");
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// Make the child widgets
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this.makeChildWidgets();
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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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CheckboxWidget.prototype.refresh = function(changedTiddlers) {
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var changedAttributes = this.computeAttributes();
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if(changedAttributes.tiddler || changedAttributes.tag || changedAttributes["class"]) {
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this.refreshSelf();
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return true;
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} else {
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var refreshed = false;
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if(changedTiddlers[this.checkboxTitle]) {
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this.inputDomNode.checked = this.getValue();
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refreshed = true;
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}
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return this.refreshChildren(changedTiddlers) || refreshed;
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}
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};
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exports.checkbox = CheckboxWidget;
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})();
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