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https://github.com/Jermolene/TiddlyWiki5
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34afe4e143
* Introduce new widget helper function to evaluate variables.Functions are evaluated as parameterised filter strings, macros as text with textual substitution of parameters and variables, and procedures and widgets as plain text * Refactor the function operator and unknown operator to use the new helper * Use the new helper to evaluate variables within filter strings, thus fixing a bug whereby functions called in such a way were being returned as plain text instead of being evaluated * Refactor the transclude widget to use the new helper * Update tests
46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
/*\
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title: $:/core/modules/filters/unknown.js
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type: application/javascript
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module-type: filteroperator
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Filter operator for handling unknown filter operators.
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Not intended to be used directly by end users, hence the square brackets around the name.
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var fieldFilterOperatorFn = require("$:/core/modules/filters/field.js").field;
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/*
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Export our filter function
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*/
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exports["[unknown]"] = function(source,operator,options) {
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// Check for a user defined filter operator
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if(operator.operator.charAt(0) === ".") {
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var variableInfo = options.widget && options.widget.getVariableInfo && options.widget.getVariableInfo(operator.operator);
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if(variableInfo && variableInfo.srcVariable && variableInfo.srcVariable.isFunctionDefinition) {
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var list = options.widget.evaluateVariable(operator.operator,{params: operator.operands, source: source});
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if(operator.prefix === "!") {
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var results = [];
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source(function(tiddler,title) {
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if(list.indexOf(title) === -1) {
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results.push(title);
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}
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});
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return results;
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} else {
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return list;
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}
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}
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}
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// Otherwise, use the "field" operator
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return fieldFilterOperatorFn(source,operator,options);
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};
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})();
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