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https://github.com/Jermolene/TiddlyWiki5
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32 lines
1.4 KiB
Plaintext
32 lines
1.4 KiB
Plaintext
created: 20180323092308399
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modified: 20180323092547312
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tags: Features
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title: StartupActions
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type: text/vnd.tiddlywiki
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During startup, TiddlyWiki executes any ActionWidgets found in tiddlers with the following system tags:
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* <<tag "$:/tags/StartupAction">> (executed on all platforms)
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* <<tag "$:/tags/StartupAction/Browser">> (only executed when running in the browser)
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* <<tag "$:/tags/StartupAction/Node">> (only executed when running under Node.js)
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Startup actions are useful for customising TiddlyWiki according to environmental factors such as the screen size. For example, the following action widgets when placed in a tiddler tagged <<tag "$:/tags/StartupAction/Browser">> will cause the sidebar to be hidden by default when the screen width is less than 1000 pixels:
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```
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<$reveal type="lt" state="$:/info/browser/screen/width" text="3000">
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<$action-setfield $tiddler="$:/state/sidebar" $value="no"/>
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</$reveal>
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<$reveal type="gteq" state="$:/info/browser/screen/width" text="3000">
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<$action-setfield $tiddler="$:/state/sidebar" $value="yes"/>
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</$reveal>
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```
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Note that global macros are not available within startup action tiddlers by default. If you need to access them then you'll need to explicitly include them:
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```
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<$importvariables filter="[[$:/core/ui/PageMacros]] [all[shadows+tiddlers]tag[$:/tags/Macro]!has[draft.of]]">
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...actions that depend upon global macros...
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</$importvariables>
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```
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