114 lines
3.3 KiB
JavaScript
114 lines
3.3 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/macrocall.js
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type: application/javascript
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module-type: widget
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Macrocall 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 MacroCallWidget = 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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MacroCallWidget.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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MacroCallWidget.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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MacroCallWidget.prototype.execute = function() {
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// Get the parse type if specified
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this.parseType = this.getAttribute("$type","text/vnd.tiddlywiki");
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this.renderOutput = this.getAttribute("$output","text/html");
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// Merge together the parameters specified in the parse tree with the specified attributes
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var params = this.parseTreeNode.params ? this.parseTreeNode.params.slice(0) : [];
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$tw.utils.each(this.attributes,function(attribute,name) {
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if(name.charAt(0) !== "$") {
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params.push({name: name, value: attribute});
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}
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});
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// Get the macro value
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var macroName = this.parseTreeNode.name || this.getAttribute("$name"),
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variableInfo = this.getVariableInfo(macroName,{params: params}),
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text = variableInfo.text,
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parseTreeNodes;
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// Are we rendering to HTML?
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if(this.renderOutput === "text/html") {
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// If so we'll return the parsed macro
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// Check if we've already cached parsing this macro
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var mode = this.parseTreeNode.isBlock ? "blockParser" : "inlineParser",
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parser;
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if(variableInfo.srcVariable && variableInfo.srcVariable[mode]) {
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parser = variableInfo.srcVariable[mode];
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} else {
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parser = this.wiki.parseText(this.parseType,text,
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{parseAsInline: !this.parseTreeNode.isBlock});
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if(variableInfo.isCacheable && variableInfo.srcVariable) {
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variableInfo.srcVariable[mode] = parser;
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}
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}
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var parseTreeNodes = parser ? parser.tree : [];
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// Wrap the parse tree in a vars widget assigning the parameters to variables named "__paramname__"
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var attributes = {};
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$tw.utils.each(variableInfo.params,function(param) {
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var name = "__" + param.name + "__";
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attributes[name] = {
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name: name,
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type: "string",
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value: param.value
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};
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});
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parseTreeNodes = [{
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type: "vars",
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attributes: attributes,
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children: parseTreeNodes
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}];
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} else if(this.renderOutput === "text/raw") {
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parseTreeNodes = [{type: "text", text: text}];
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} else {
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// Otherwise, we'll render the text
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var plainText = this.wiki.renderText("text/plain",this.parseType,text,{parentWidget: this});
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parseTreeNodes = [{type: "text", text: plainText}];
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}
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// Construct the child widgets
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this.makeChildWidgets(parseTreeNodes);
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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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MacroCallWidget.prototype.refresh = function(changedTiddlers) {
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var changedAttributes = this.computeAttributes();
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if($tw.utils.count(changedAttributes) > 0) {
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// Rerender ourselves
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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.macrocall = MacroCallWidget;
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})();
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