mirror of
https://github.com/Jermolene/TiddlyWiki5
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89 lines
3.0 KiB
JavaScript
89 lines
3.0 KiB
JavaScript
/*\
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title: js/macros/tiddler.js
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The tiddler macros transcludes another macro into the tiddler being rendered.
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Parameters:
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target: the title of the tiddler to transclude
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template: the title of the tiddler to use as a template for the transcluded tiddler
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with: optional parameters to be substituted into the rendered tiddler
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The simplest case is to just supply a target tiddler:
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<<tiddler Foo>> or <<transclude target:Foo>>
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This will render the tiddler Foo within the current tiddler. If the tiddler Foo includes
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the view macro (or other macros that reference the fields of the current tiddler), then the
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fields of the tiddler Foo will be accessed.
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If you want to transclude the tiddler as a template, so that the fields referenced by the view
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macro are those of the tiddler doing the transcluding, then you can instead specify the tiddler
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as a template:
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<<tiddler template:Foo>>
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The effect is the same as the previous example: the text of the tiddler Foo is rendered. The
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difference is that the view macro will access the fields of the tiddler doing the transcluding.
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The `target` and `template` parameters may be combined:
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<<tiddler target:Foo template:Bar>>
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Here, the text of the tiddler `Bar` will be transcluded, with the macros within it accessing the fields
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of the tiddler `Foo`.
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Finally, the `with` parameter is used to substitute values for the special markers $1, $2, $3 etc. The
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substitutions are performed on the tiddler whose text is being rendered: either the tiddler named in
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the `template` parameter or, if that parameter is missing, the tiddler named in the `target` parameter.
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\*/
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(function(){
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/*jslint node: true */
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"use strict";
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var utils = require("../Utils.js");
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exports.macro = {
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name: "tiddler",
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types: ["text/html","text/plain"],
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cascadeParams: true, // Cascade names of named parameters to following anonymous parameters
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params: {
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target: {byName: "default", type: "tiddler", optional: true},
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template: {byName: true, type: "tiddler", optional: true},
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"with": {byName: true, type: "text", optional: true, dependentAll: true}
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},
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handler: function(type,tiddler,store,params) {
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var renderTitle = params.template,
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renderAs = params.target;
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// Slightly bewildering logic to sort out the optional parameters
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if(renderAs === undefined) {
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if(renderTitle === undefined) {
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return "";
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} else {
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renderAs = tiddler.title;
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}
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} else {
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if(renderTitle === undefined) {
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renderTitle = renderAs;
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}
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}
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if(params["with"]) {
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// Parameterised transclusion
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var targetTiddler = store.getTiddler(renderTitle),
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text = targetTiddler.text;
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var withTokens = [params["with"]];
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for(var t=0; t<withTokens.length; t++) {
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var placeholderRegExp = new RegExp("\\$"+(t+1),"mg");
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text = text.replace(placeholderRegExp,withTokens[t]);
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}
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return store.renderText(targetTiddler.type,text,type,renderAs);
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} else {
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// There's no parameterisation, so we can just render the target tiddler directly
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return store.renderTiddler(type,renderTitle,renderAs);
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}
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}
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};
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})();
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