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TiddlyWiki5/core/modules/widgets/macrocall.js

92 lines
2.5 KiB
JavaScript

/*\
title: $:/core/modules/widgets/macrocall.js
type: application/javascript
module-type: widget
Macrocall widget
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var Widget = require("$:/core/modules/widgets/widget.js").widget;
var MacroCallWidget = function(parseTreeNode,options) {
this.initialise(parseTreeNode,options);
};
/*
Inherit from the base widget class
*/
MacroCallWidget.prototype = new Widget();
/*
Render this widget into the DOM
*/
MacroCallWidget.prototype.render = function(parent,nextSibling) {
this.parentDomNode = parent;
this.computeAttributes();
this.execute();
this.renderChildren(parent,nextSibling);
};
/*
Compute the internal state of the widget
*/
MacroCallWidget.prototype.execute = function() {
this.macroName = this.parseTreeNode.name || this.getAttribute("$name"),
this.parseType = this.getAttribute("$type","text/vnd.tiddlywiki");
this.renderOutput = this.getAttribute("$output","text/html");
// Merge together the parameters specified in the parse tree with the specified attributes
var params = this.parseTreeNode.params ? this.parseTreeNode.params.slice(0) : [];
$tw.utils.each(this.attributes,function(attribute,name) {
if(name.charAt(0) !== "$") {
params.push({name: name, value: attribute});
}
});
// Make a transclude widget
var positionalName = 0,
parseTreeNodes = [{
type: "transclude",
isBlock: this.parseTreeNode.isBlock,
children: this.parseTreeNode.children
}];
$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"$variable",this.macroName);
$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"$type",this.parseType);
$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"$output",this.renderOutput);
$tw.utils.each(params,function(param) {
var name = param.name;
if(name) {
if(name.charAt(0) === "$") {
name = "$" + name;
}
$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],name,param.value);
} else {
$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],(positionalName++) + "",param.value);
}
});
// Construct the child widgets
this.makeChildWidgets(parseTreeNodes);
};
/*
Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
*/
MacroCallWidget.prototype.refresh = function(changedTiddlers) {
var changedAttributes = this.computeAttributes();
if($tw.utils.count(changedAttributes) > 0) {
// Rerender ourselves
this.refreshSelf();
return true;
} else {
return this.refreshChildren(changedTiddlers);
}
};
exports.macrocall = MacroCallWidget;
})();