mirror of
https://github.com/Jermolene/TiddlyWiki5
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58 lines
1.5 KiB
JavaScript
58 lines
1.5 KiB
JavaScript
/*\
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title: $:/core/modules/filters/lookup.js
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type: application/javascript
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module-type: filteroperator
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Filter operator that looks up values via a title prefix
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[lookup:<defaultvalue>:<field OR index>[<prefix>],[<field-name OR index-name>]]
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Prepends the prefix to the selected items and returns the specified
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field or index value. If the 2nd suffix does not exist, it defaults to field.
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If the second operand is missing it defaults to "text" for fields, and "0" for indexes
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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 function
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*/
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exports.lookup = function(source,operator,options) {
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var results = [],
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suffixes = operator.suffixes || [],
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defaultSuffix = suffixes[0] ? (suffixes[0][0] || "") : "",
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indexSuffix = (suffixes[1] && suffixes[1][0] === "index") ? true : false,
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target;
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if(operator.operands.length == 2) {
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target = operator.operands[1]
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} else {
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target = indexSuffix ? "0": "text";
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}
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if(indexSuffix) {
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source(function(tiddler,title) {
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var targetTitle = operator.operands[0] + title;
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var data = options.wiki.extractTiddlerDataItem(targetTitle,target,defaultSuffix);
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results.push(data);
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});
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} else {
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source(function(tiddler,title) {
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var targetTitle = operator.operands[0] + title;
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var targetTiddler = options.wiki.getTiddler(targetTitle);
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if(targetTiddler) {
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var value = targetTiddler.getFieldString(target);
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if(value == "" && defaultSuffix !== "") {
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value = defaultSuffix;
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}
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results.push(value);
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}
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});
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}
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return results;
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};
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})();
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