kopia lustrzana https://github.com/miklobit/TiddlyWiki5
130 wiersze
3.6 KiB
JavaScript
130 wiersze
3.6 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/radio.js
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type: application/javascript
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module-type: widget
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Radio widget
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Will set a field to the selected value:
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```
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<$radio field="myfield" value="check 1">one</$radio>
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<$radio field="myfield" value="check 2">two</$radio>
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<$radio field="myfield" value="check 3">three</$radio>
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```
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|Parameter |Description |h
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|tiddler |Name of the tiddler in which the field should be set. Defaults to current tiddler |
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|field |The name of the field to be set |
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|value |The value to set |
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|class |Optional class name(s) |
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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 RadioWidget = 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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RadioWidget.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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RadioWidget.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.labelDomNode.setAttribute("class",this.radioClass);
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this.inputDomNode = this.document.createElement("input");
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this.inputDomNode.setAttribute("type","radio");
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if(this.getValue() == this.radioValue) {
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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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RadioWidget.prototype.getValue = function() {
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var tiddler = this.wiki.getTiddler(this.radioTitle);
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return tiddler && tiddler.getFieldString(this.radioField);
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};
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RadioWidget.prototype.setValue = function() {
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if(this.radioField) {
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var tiddler = this.wiki.getTiddler(this.radioTitle),
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addition = {};
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addition[this.radioField] = this.radioValue;
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this.wiki.addTiddler(new $tw.Tiddler(tiddler,addition));
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}
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};
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RadioWidget.prototype.handleChangeEvent = function(event) {
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if (this.inputDomNode.checked) {
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this.setValue();
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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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RadioWidget.prototype.execute = function() {
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// Get the parameters from the attributes
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this.radioTitle = this.getAttribute("tiddler",this.getVariable("currentTiddler"));
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this.radioField = this.getAttribute("field");
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this.radioValue = this.getAttribute("value");
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this.radioClass = this.getAttribute("class","");
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if(this.radioClass !== "") {
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this.radioClass += " ";
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}
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this.radioClass += "tw-radio";
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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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RadioWidget.prototype.refresh = function(changedTiddlers) {
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var changedAttributes = this.computeAttributes();
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if(changedAttributes.tiddler || changedAttributes.field || changedAttributes.value || 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.radioTitle]) {
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this.inputDomNode.checked = this.getValue() === this.radioValue;
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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.radio = RadioWidget;
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})();
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