mirror of https://github.com/friendica/friendica
30 lines
1.2 KiB
Plaintext
30 lines
1.2 KiB
Plaintext
Filter.ExtractStyleBlocks.Scope
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TYPE: string/null
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VERSION: 3.0.0
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DEFAULT: NULL
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ALIASES: Filter.ExtractStyleBlocksScope, FilterParam.ExtractStyleBlocksScope
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--DESCRIPTION--
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<p>
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If you would like users to be able to define external stylesheets, but
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only allow them to specify CSS declarations for a specific node and
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prevent them from fiddling with other elements, use this directive.
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It accepts any valid CSS selector, and will prepend this to any
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CSS declaration extracted from the document. For example, if this
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directive is set to <code>#user-content</code> and a user uses the
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selector <code>a:hover</code>, the final selector will be
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<code>#user-content a:hover</code>.
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</p>
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<p>
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The comma shorthand may be used; consider the above example, with
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<code>#user-content, #user-content2</code>, the final selector will
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be <code>#user-content a:hover, #user-content2 a:hover</code>.
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</p>
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<p>
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<strong>Warning:</strong> It is possible for users to bypass this measure
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using a naughty + selector. This is a bug in CSS Tidy 1.3, not HTML
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Purifier, and I am working to get it fixed. Until then, HTML Purifier
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performs a basic check to prevent this.
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</p>
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--# vim: et sw=4 sts=4
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