mirror of
https://github.com/Jermolene/TiddlyWiki5
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73 lines
2.0 KiB
Plaintext
73 lines
2.0 KiB
Plaintext
title: LinkWidget
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tags: widget
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The `link` widget generates links to tiddlers and external URIs. Optionally, hovering over a link can trigger the display of another tiddler as a popup.
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! Attributes
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* `to` - link target can be a URL
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* `hover` - the title of a tiddler containing the popup state to set when hovering over the link
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* `qualifyHoverTitles` - if this attribute is present then the title of the hover state tiddler is qualified as described in the PopupMechanism
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The `to` attribute is interpreted as an external link if it matches this regular expression:
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```
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/(?:file|http|https|mailto|ftp|irc|news|data):[^\s'"]+(?:\/|\b)/i
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```
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! Examples
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The `hover` attribute is part of the PopupMechanism.
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For example:
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```
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`$:/MyHover` is {{$:/MyHover}}
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<$link to="HelloThere" hover="$:/MyHover">Hover me to see ~HelloThere!</$link>
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<$reveal state="$:/MyHover" type="popup">
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<div class="tw-drop-down">
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{{HelloThere}}
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</div>
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</$reveal>
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```
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Renders as:
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`$:/MyHover` is {{$:/MyHover}}
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<$link to="HelloThere" hover="$:/MyHover">Hover me to see ~HelloThere!</$link>
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<$reveal state="$:/MyHover" type="popup">
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<div class="tw-drop-down">
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{{HelloThere}}
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</div>
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</$reveal>
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! CSS Classes
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* `tw-tiddlylink` - applied to all links
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* `tw-tiddlylink-external` - applied to external, non-tiddler links
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* `tw-tiddlylink-internal` - applied to tiddler links
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* `tw-tiddlylink-missing` - applied to tiddler links where the target tiddler doesn't exist
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* `tw-tiddlylink-resolves` - applied to tiddler links when the target tiddler does exist
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! Configuration macros
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Configuration macros can be used to modify the behaviour of the link widget.
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!! tw-wikilinks
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Links are suppressed if the macro `tw-wikilinks` evaluates to the string `no`. For example:
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```
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\define tw-wikilinks() no
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```
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!! tw-wikilink-template
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Link targets default to the URL encoded title of the tiddler. The `href` can be templated by defining the configuration macro `tw-wikilink-template`, and including within it the token `$uri_encoded$`. For example:
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```
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\define tw-wikilink-template() http://tiddlywiki.com/#$uri_encoded$
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```
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