mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-08-19 14:16:17 +00:00
142 lines
3.9 KiB
JavaScript
142 lines
3.9 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/button.js
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type: application/javascript
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module-type: widget
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Button 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 ButtonWidget = 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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ButtonWidget.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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ButtonWidget.prototype.render = function(parent,nextSibling) {
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var self = this;
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// Remember parent
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this.parentDomNode = parent;
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// Compute attributes and execute state
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this.computeAttributes();
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this.execute();
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// Create element
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var domNode = this.document.createElement("button");
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// Assign classes
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var classes = this["class"].split(" ") || [];
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if(this.selectedClass) {
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if(this.set && this.setTo && this.isSelected()) {
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$tw.utils.pushTop(classes,this.selectedClass.split(" "));
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}
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if(this.popup && this.isPoppedUp()) {
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$tw.utils.pushTop(classes,this.selectedClass.split(" "));
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}
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}
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domNode.className = classes.join(" ");
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// Assign classes
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if(this.style) {
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domNode.setAttribute("style",this.style);
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}
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// Add a click event handler
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domNode.addEventListener("click",function (event) {
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var handled = false;
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if(self.message) {
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self.dispatchMessage(event);
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handled = true;
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}
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if(self.popup) {
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self.triggerPopup(event);
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handled = true;
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}
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if(self.set) {
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self.setTiddler();
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handled = true;
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}
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if(handled) {
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event.preventDefault();
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event.stopPropagation();
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}
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return handled;
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},false);
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// Insert element
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parent.insertBefore(domNode,nextSibling);
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this.renderChildren(domNode,null);
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this.domNodes.push(domNode);
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};
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ButtonWidget.prototype.isSelected = function() {
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var tiddler = this.wiki.getTiddler(this.set);
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return tiddler ? tiddler.fields.text === this.setTo : this.defaultSetValue === this.setTo;
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};
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ButtonWidget.prototype.isPoppedUp = function() {
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var tiddler = this.wiki.getTiddler(this.popup);
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var result = tiddler && tiddler.fields.text ? $tw.popup.readPopupState(this.popup,tiddler.fields.text) : false;
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return result;
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};
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ButtonWidget.prototype.dispatchMessage = function(event) {
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this.dispatchEvent({type: this.message, param: this.param, tiddlerTitle: this.getVariable("currentTiddler")});
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};
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ButtonWidget.prototype.triggerPopup = function(event) {
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$tw.popup.triggerPopup({
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domNode: this.domNodes[0],
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title: this.popup,
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wiki: this.wiki
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});
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};
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ButtonWidget.prototype.setTiddler = function() {
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var tiddler = this.wiki.getTiddler(this.set);
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this.wiki.addTiddler(new $tw.Tiddler(tiddler,{title: this.set, text: this.setTo}));
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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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ButtonWidget.prototype.execute = function() {
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// Get attributes
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this.message = this.getAttribute("message");
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this.param = this.getAttribute("param");
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this.set = this.getAttribute("set");
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this.setTo = this.getAttribute("setTo");
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this.popup = this.getAttribute("popup");
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this.hover = this.getAttribute("hover");
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this["class"] = this.getAttribute("class","");
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this.style = this.getAttribute("style");
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this.selectedClass = this.getAttribute("selectedClass");
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this.defaultSetValue = this.getAttribute("default");
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// Make 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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ButtonWidget.prototype.refresh = function(changedTiddlers) {
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var changedAttributes = this.computeAttributes();
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if(changedAttributes.message || changedAttributes.param || changedAttributes.set || changedAttributes.setTo || changedAttributes.popup || changedAttributes.hover || changedAttributes["class"] || changedAttributes.selectedClass || changedAttributes.style || (this.set && changedTiddlers[this.set]) || (this.popup && changedTiddlers[this.popup])) {
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this.refreshSelf();
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return true;
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}
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return this.refreshChildren(changedTiddlers);
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};
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exports.button = ButtonWidget;
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})();
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