127 lines
4.0 KiB
JavaScript
Executable File
127 lines
4.0 KiB
JavaScript
Executable File
/*\
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title: $:/core/modules/widgets/set.js
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type: application/javascript
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module-type: widget
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Set variable 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 SetWidget = 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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SetWidget.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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SetWidget.prototype.render = function(parent,nextSibling) {
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this.parentDomNode = parent;
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this.computeAttributes();
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this.execute();
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this.renderChildren(parent,nextSibling);
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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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SetWidget.prototype.execute = function() {
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// Get our parameters
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this.setName = this.getAttribute("name","currentTiddler");
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this.setFilter = this.getAttribute("filter");
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this.setSelect = this.getAttribute("select");
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this.setTiddler = this.getAttribute("tiddler");
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this.setSubTiddler = this.getAttribute("subtiddler");
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this.setField = this.getAttribute("field");
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this.setIndex = this.getAttribute("index");
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this.setValue = this.getAttribute("value");
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this.setEmptyValue = this.getAttribute("emptyValue");
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// Set context variable
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if(this.parseTreeNode.isMacroDefinition) {
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this.setVariable(this.setName,this.getValue(),this.parseTreeNode.params,true);
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} else if(this.parseTreeNode.isFunctionDefinition) {
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this.setVariable(this.setName,this.getValue(),this.parseTreeNode.params,undefined,{isFunctionDefinition: true});
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} else if(this.parseTreeNode.isProcedureDefinition) {
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this.setVariable(this.setName,this.getValue(),this.parseTreeNode.params,undefined,{isProcedureDefinition: true, configTrimWhiteSpace: this.parseTreeNode.configTrimWhiteSpace});
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} else if(this.parseTreeNode.isWidgetDefinition) {
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this.setVariable(this.setName,this.getValue(),this.parseTreeNode.params,undefined,{isWidgetDefinition: true, configTrimWhiteSpace: this.parseTreeNode.configTrimWhiteSpace});
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} else {
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this.setVariable(this.setName,this.getValue());
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}
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// Construct the child widgets
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this.makeChildWidgets();
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};
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/*
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Get the value to be assigned
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*/
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SetWidget.prototype.getValue = function() {
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var value = this.setValue;
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if(this.setTiddler) {
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var tiddler;
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if(this.setSubTiddler) {
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tiddler = this.wiki.getSubTiddler(this.setTiddler,this.setSubTiddler);
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} else {
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tiddler = this.wiki.getTiddler(this.setTiddler);
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}
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if(!tiddler) {
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value = this.setEmptyValue;
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} else if(this.setField) {
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value = tiddler.getFieldString(this.setField) || this.setEmptyValue;
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} else if(this.setIndex) {
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value = this.wiki.extractTiddlerDataItem(this.setTiddler,this.setIndex,this.setEmptyValue);
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} else {
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value = tiddler.fields.text || this.setEmptyValue ;
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}
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} else if(this.setFilter) {
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var results = this.wiki.filterTiddlers(this.setFilter,this);
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if(this.setValue == null) {
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var select;
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if(this.setSelect) {
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select = parseInt(this.setSelect,10);
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}
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if(select !== undefined) {
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value = results[select] || "";
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} else {
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value = $tw.utils.stringifyList(results);
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}
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}
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if(results.length === 0 && this.setEmptyValue !== undefined) {
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value = this.setEmptyValue;
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}
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} else if(!value && this.setEmptyValue) {
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value = this.setEmptyValue;
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}
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return value || "";
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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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SetWidget.prototype.refresh = function(changedTiddlers) {
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var changedAttributes = this.computeAttributes();
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if(changedAttributes.name || changedAttributes.filter || changedAttributes.select || changedAttributes.tiddler || (this.setTiddler && changedTiddlers[this.setTiddler]) || changedAttributes.field || changedAttributes.index || changedAttributes.value || changedAttributes.emptyValue ||
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(this.setFilter && this.getValue() != this.variables[this.setName].value)) {
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this.refreshSelf();
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return true;
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} else {
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return this.refreshChildren(changedTiddlers);
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}
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};
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exports.setvariable = SetWidget;
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exports.set = SetWidget;
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})();
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