52 lines
2.7 KiB
Plaintext
52 lines
2.7 KiB
Plaintext
caption: genesis
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created: 20221101100729587
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modified: 20230115101800345
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tags: Widgets
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title: GenesisWidget
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type: text/vnd.tiddlywiki
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! Introduction
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<<.from-version "5.2.4">> The <<.wid genesis>> widget allows the dynamic construction of another widget, where the name and attributes of the new widget can be dynamically determined, without needing to be known in advance.
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! Content and Attributes
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The content of the <<.wid genesis>> widget is used as the content of the dynamically created widget.
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|!Attribute |!Description |
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|$type |The type of widget or element to create (an initial `$` indicates a widget, otherwise an HTML element will be created) |
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|$names |An optional filter evaluating to the names of a list of attributes to be applied to the widget |
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|$values |An optional filter evaluating to the values corresponding to the list of names specified in <<.attr $names>> |
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|$mode |An optional override of the parsing mode. May be "inline" or "block" |
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|//{other attributes starting with $}// |Other attributes starting with a single dollar sign are reserved for future use |
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|//{attributes starting with $$}// |Attributes starting with two dollar signs are applied as attributes to the output widget, but with the attribute name changed to use a single dollar sign |
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|//{attributes not starting with $}// |Any other attributes that do not start with a dollar are applied as attributes to the output widget |
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<<.from-version "5.2.6">> If the `$type` attribute is missing or blank, the <<.wlink GenesisWidget>> widget does not render an intrinsic element, instead just rendering its children.
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Note that attributes explicitly specified take precedence over attributes with the same name specified in the `$names` filter.
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! Examples
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<$macrocall $name="wikitext-example"
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src="""<$genesis $type="div" class="tc-thing" label="Squeak">Mouse</$genesis>"""/>
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<$macrocall $name="wikitext-example"
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src="""\define my-banner(mode:"inline",caption)
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<$genesis $type={{{ [<__mode__>match[inline]then[span]else[div]] }}} class="tc-mybanner">
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<<__caption__>>
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</$genesis>
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\end
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<<my-banner caption:"I'm in a SPAN">>
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<<my-banner mode:"block" caption:"I'm in a DIV">>
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"""/>
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! Important
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<$macrocall $name=".warning" _="""
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In the following example the widget attribute named `one` is not present in the HTML output. This is because HTML attributes starting with the prefix `on` are removed for security reasons. See [[HTML in WikiText]] "Security" for more details. This restriction only affects generated HTML elements, and does not prevent the use of attributes prefixed `on` with other widgets"""/>
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<<wikitext-example '<$genesis $type="my-element" $names="one two" $values="1 2">Test Genesis Widget</$genesis>'>>
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