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41 lines
1.4 KiB
Plaintext
41 lines
1.4 KiB
Plaintext
caption: importvariables
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created: 20140612142500000
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modified: 20180928150043777
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tags: Widgets
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title: ImportVariablesWidget
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type: text/vnd.tiddlywiki
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! Introduction
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The ImportVariablesWidget imports macro and variable definitions from a list of other tiddlers and makes them available to its children. For example:
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```
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<$importvariables filter="[tag[mySpecialMacros]]">
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All the macros defined in tiddlers with the tag "mySpecialMacros" are available here
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</$importvariables>
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```
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! Attributes and Content
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The content of the importvariables widget is the scope within which the imported variable definitions are available.
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|!Attribute |!Description |
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|filter |[[Tiddler filter|Filters]] defining the tiddlers from which macro definitions will be imported |
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! Global Macros
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So-called global macros are implemented within the main page template ([[$:/core/ui/PageTemplate]]) by wrapping the page content in the following importvariables widget:
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```
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<$importvariables filter="[[$:/core/ui/PageMacros]] [all[shadows+tiddlers]tag[$:/tags/Macro]!has[draft.of]]">
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...
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</$importvariables>
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```
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! `\import` Pragma
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<<.from-version "5.1.18">> The `\import` [[pragma|Pragma]] is an alternative syntax for using the ImportVariablesWidget. For example, the previous example could be expressed as:
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```
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\import [[$:/core/ui/PageMacros]] [all[shadows+tiddlers]tag[$:/tags/Macro]!has[draft.of]]
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``` |