71 lines
1.7 KiB
JavaScript
71 lines
1.7 KiB
JavaScript
/*\
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title: $:/core/modules/filters/has.js
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type: application/javascript
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module-type: filteroperator
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Filter operator for checking if a tiddler has the specified field or index
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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/*
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Export our filter function
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*/
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exports.has = function(source,operator,options) {
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var results = [],
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invert = operator.prefix === "!";
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if(operator.suffix === "field") {
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if(invert) {
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source(function(tiddler,title) {
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if(!tiddler || (tiddler && (!$tw.utils.hop(tiddler.fields,operator.operand)))) {
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results.push(title);
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}
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});
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} else {
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source(function(tiddler,title) {
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if(tiddler && $tw.utils.hop(tiddler.fields,operator.operand)) {
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results.push(title);
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}
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});
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}
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}
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else if(operator.suffix === "index") {
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if(invert) {
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source(function(tiddler,title) {
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if(!tiddler || (tiddler && (!$tw.utils.hop(options.wiki.getTiddlerDataCached(tiddler,Object.create(null)),operator.operand)))) {
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results.push(title);
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}
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});
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} else {
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source(function(tiddler,title) {
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if(tiddler && $tw.utils.hop(options.wiki.getTiddlerDataCached(tiddler,Object.create(null)),operator.operand)) {
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results.push(title);
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}
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});
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}
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}
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else {
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if(invert) {
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source(function(tiddler,title) {
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if(!tiddler || !$tw.utils.hop(tiddler.fields,operator.operand) || (tiddler.fields[operator.operand].length === 0)) {
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results.push(title);
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}
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});
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} else {
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source(function(tiddler,title) {
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if(tiddler && $tw.utils.hop(tiddler.fields,operator.operand) && (tiddler.fields[operator.operand].length !== 0)) {
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results.push(title);
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}
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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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