TiddlyWiki5/core/modules/filters/is.js

48 wiersze
1.0 KiB
JavaScript

/*\
title: $:/core/modules/filters/is.js
type: application/javascript
module-type: filteroperator
Filter operator for checking tiddler properties
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var isFilterOperators;
function getIsFilterOperators() {
if(!isFilterOperators) {
isFilterOperators = {};
$tw.modules.applyMethods("isfilteroperator",isFilterOperators);
}
return isFilterOperators;
}
/*
Export our filter function
*/
exports.is = function(source,operator,options) {
// Dispatch to the correct isfilteroperator
var isFilterOperators = getIsFilterOperators();
if(operator.operand) {
var isFilterOperator = isFilterOperators[operator.operand];
if(isFilterOperator) {
return isFilterOperator(source,operator.prefix,options);
} else {
return [$tw.language.getString("Error/IsFilterOperator")];
}
} else {
// Return all tiddlers if the operand is missing
var results = [];
source(function(tiddler,title) {
results.push(title);
});
return results;
}
};
})();