mirror of
https://github.com/Jermolene/TiddlyWiki5
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112 lines
3.1 KiB
JavaScript
112 lines
3.1 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/checkbox.js
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type: application/javascript
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module-type: widget
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Implements the checkbox widget.
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```
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<$checkbox tag="done"/>
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<$checkbox tiddler="HelloThere" tag="red"/>
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<$checkbox tag="done">
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<$view title/>
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</$checkbox>
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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 $tw: false */
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"use strict";
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var CheckboxWidget = function(renderer) {
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// Save state
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this.renderer = renderer;
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// Generate child nodes
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this.generate();
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};
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CheckboxWidget.prototype.generate = function() {
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// Get the parameters from the attributes
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this.tiddlerTitle = this.renderer.getAttribute("tiddler",this.renderer.tiddlerTitle);
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this.tagName = this.renderer.getAttribute("tag");
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this["class"] = this.renderer.getAttribute("class");
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// Compute classes
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var classes = ["tw-checkbox"];
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if(this["class"]) {
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$tw.utils.pushTop(classes,this["class"]);
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}
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// Create the checkbox and span elements
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var nodeCheckbox = {
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type: "element",
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tag: "input",
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attributes: {
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type: {type: "string", value: "checkbox"}
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}
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},
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nodeSpan = {
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type: "element",
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tag: "span",
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children: this.renderer.parseTreeNode.children
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};
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// Set the state of the checkbox
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if(this.getValue()) {
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$tw.utils.addAttributeToParseTreeNode(nodeCheckbox,"checked","true");
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}
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// Set the return element
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this.tag = "label";
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this.attributes ={"class": classes.join(" ")};
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this.children = this.renderer.renderTree.createRenderers(this.renderer,[nodeCheckbox,nodeSpan]);
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this.events = [{name: "change", handlerObject: this, handlerMethod: "handleChangeEvent"}];
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};
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CheckboxWidget.prototype.getValue = function() {
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var tiddler = this.renderer.renderTree.wiki.getTiddler(this.tiddlerTitle);
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return tiddler ? tiddler.hasTag(this.tagName) : false;
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};
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CheckboxWidget.prototype.handleChangeEvent = function(event) {
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var checked = this.children[0].domNode.checked,
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tiddler = this.renderer.renderTree.wiki.getTiddler(this.tiddlerTitle);
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if(tiddler && tiddler.hasTag(this.tagName) !== checked) {
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var newTags = tiddler.fields.tags.slice(0),
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pos = newTags.indexOf(this.tagName);
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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.tagName);
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}
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this.renderer.renderTree.wiki.addTiddler(new $tw.Tiddler(tiddler,{tags: newTags}));
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}
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};
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CheckboxWidget.prototype.refreshInDom = function(changedAttributes,changedTiddlers) {
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// Check if any of our attributes have changed, or if a tiddler we're interested in has changed
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if(changedAttributes.tiddler || changedAttributes.tag || changedAttributes["class"]) {
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// Regenerate and rerender the widget and replace the existing DOM node
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this.generate();
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var oldDomNode = this.renderer.domNode,
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newDomNode = this.renderer.renderInDom();
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oldDomNode.parentNode.replaceChild(newDomNode,oldDomNode);
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} else {
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// Update the checkbox if necessary
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if(changedTiddlers[this.tiddlerTitle]) {
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this.children[0].domNode.checked = this.getValue();
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}
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// Refresh children
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$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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};
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exports.checkbox = CheckboxWidget;
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})();
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