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Allow selector ordering to ensure theme.json root selector margin takes precedence #36960

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Merged
getdave merged 7 commits into from
Dec 9, 2021
Merged

Allow selector ordering to ensure theme.json root selector margin takes precedence #36960

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09c052b
Set default margin on body prior to generating styles from theme.json
getdave Nov 30, 2021
8c827ca
Add additional context to comment
getdave Nov 30, 2021
7c2969d
Restore simple version of body rule
getdave Nov 30, 2021
8132d20
Update with fixes made in Core patch
getdave Dec 9, 2021
6afbc51
Fix output now includes new line.
getdave Dec 9, 2021
4b7b15a
Fix tests relating to spacing
getdave Dec 9, 2021
0a52906
Fix test to put body CSS reset first
getdave Dec 9, 2021
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11 changes: 10 additions & 1 deletion lib/compat/wordpress-5.9/class-wp-theme-json-gutenberg.php
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Original file line number Diff line number Diff line change
Expand Up @@ -714,6 +714,16 @@ private function get_block_classes( $style_nodes ) {
}
}

// Reset default browser margin on the root body element.
// We set this on the root selector **before** generating the ruleset
// from the `theme.json`. This is to ensure that if the `theme.json` declares
// `margin` in its `spacing` declaration for the `body` element then these
// user-generated values take precedence in the CSS cascade.
// See: https://github.com/WordPress/gutenberg/issues/36147.
if ( self::ROOT_BLOCK_SELECTOR === $selector ) {
$block_rules .= "body { margin: 0; }\n";
}

// 2. Generate the rules that use the general selector.
$block_rules .= self::to_ruleset( $selector, $declarations );

Expand All @@ -724,7 +734,6 @@ private function get_block_classes( $style_nodes ) {
}

if ( self::ROOT_BLOCK_SELECTOR === $selector ) {
$block_rules .= 'body { margin: 0; }';
$block_rules .= '.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }';
$block_rules .= '.wp-site-blocks > .alignright { float: right; margin-left: 2em; }';
$block_rules .= '.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }';
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