53 lines
1.2 KiB
JavaScript
53 lines
1.2 KiB
JavaScript
/*\
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title: $:/core/modules/filterrunprefixes/reduce.js
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type: application/javascript
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module-type: filterrunprefix
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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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/*
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Export our filter prefix function
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*/
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exports.reduce = function(operationSubFunction,options) {
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return function(results,source,widget) {
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if(results.length > 0) {
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var accumulator = "";
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var index = 0;
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results.each(function(title) {
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var list = operationSubFunction(options.wiki.makeTiddlerIterator([title]),{
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getVariable: function(name) {
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switch(name) {
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case "currentTiddler":
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return "" + title;
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case "..currentTiddler":
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return widget.getVariable("currentTiddler");
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case "accumulator":
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return "" + accumulator;
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case "index":
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return "" + index;
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case "revIndex":
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return "" + (results.length - 1 - index);
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case "length":
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return "" + results.length;
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default:
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return widget.getVariable(name);
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}
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}
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});
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if(list.length > 0) {
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accumulator = "" + list[0];
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}
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++index;
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});
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results.clear();
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results.push(accumulator);
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}
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}
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};
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})();
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