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37 lines
1.0 KiB
Plaintext
37 lines
1.0 KiB
Plaintext
caption: transclusion
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created: 20141002004621385
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modified: 20141002162057822
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tags: Variables
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title: WidgetVariable: transclusion
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type: text/vnd.tiddlywiki
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! Mechanism
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The ''transclusion'' variable is set automatically by the transclude widget to contain a string that identifies the position of the current node within the widget tree. In the sidebar it is set to `{|$:/core/ui/PageTemplate/sidebar|||}` and within the tiddler "HelloThere" in the story river it is set to `{HelloThere|HelloThere|||}`. Each nested level of transclusion appends another curly bracketed list of symbols.
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The QualifyMacro uses the ''transclusion'' variable to identify the stack of transcluded tiddlers.
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! Example
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```
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\define mymacro()
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Hello from mymacro
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<$list filter="[<transclusion>prefix[{|$:/core/ui/PageTemplate/sidebar|||}]]" emptyMessage="in a tiddler">
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in the sidebar
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</$list>
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\end
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<<mymacro>>
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```
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Result in story tiddler
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```
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Hello from mymacro in a tiddler
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```
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Result in the sidebar
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```
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Hello from mymacro in the sidebar
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```
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