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jeremy@jermolene.com 2021-11-04 15:51:13 +00:00
parent b6ce353a7d
commit fc3a764199
2 changed files with 61 additions and 0 deletions
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36
core/modules/filterrunprefixes/cascade.js Normal file
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@ -0,0 +1,36 @@
/*\
title: $:/core/modules/filterrunprefixes/cascade.js
type: application/javascript
module-type: filterrunprefix
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
/*
Export our filter prefix function
*/
exports.cascade = function(operationSubFunction,options) {
return function(results,source,widget) {
if(results.length !== 0) {
var filterList = operationSubFunction(source,widget);
var inputResults = results.toArray();
results.clear();
$tw.utils.each(inputResults,function(title) {
var result = ""; // If no filter matches, we return an empty string
$tw.utils.each(filterList,function(filter) {
var output = options.wiki.filterTiddlers(filter,widget,options.wiki.makeTiddlerIterator([title]));
if(output.length !== 0) {
result = output[0];
return false;
}
});
results.push(result);
});
}
}
};
})();

25
editions/test/tiddlers/tests/test-prefixes-filter.js
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@ -288,6 +288,31 @@ describe("'reduce' and 'intersection' filter prefix tests", function() {
tags: ["cakes","with tea"],
text: "Does anyone eat pound cake?"
});
wiki.addTiddler({
title: "$:/filter1",
text: "[tag[cakes]then[It is customary]]",
tags: "$:/tags/Filter"
});
wiki.addTiddler({
title: "$:/filter2",
text: "[tag[shopping]then[It is not customary]]",
tags: "$:/tags/Filter"
});
wiki.addTiddler({
title: "$:/filter3",
text: "[[Just a default]]",
tags: "$:/tags/Filter"
});
wiki.addTiddler({
title: "$:/tags/Filter",
list: "$:/filter1 $:/filter2 $:/filter3"
});
it("should handle the :cascade filter prefix", function() {
expect(wiki.filterTiddlers("[[Rice Pudding]] :cascade[all[shadows+tiddlers]tag[$:/tags/Filter]get[text]]").join(",")).toBe("It is not customary");
expect(wiki.filterTiddlers("[[chocolate cake]] :cascade[all[shadows+tiddlers]tag[$:/tags/Filter]get[text]]").join(",")).toBe("It is customary");
expect(wiki.filterTiddlers("[[Sparkling water]] :cascade[all[shadows+tiddlers]tag[$:/tags/Filter]get[text]]").join(",")).toBe("Just a default");
});
it("should handle the :reduce filter prefix", function() {
expect(wiki.filterTiddlers("[tag[shopping]] :reduce[get[quantity]add<accumulator>]").join(",")).toBe("22");