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(ignore) just having fun #8629

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b8edcc6
Introduce component-scoped CSS variable aliases
siddharthkp Oct 28, 2026
89802a2
chore: auto-fix lint and formatting issues
siddharthkp Oct 28, 2026
601f74d
Expose optional navigation state color hooks
siddharthkp Oct 28, 2026
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5 changes: 5 additions & 0 deletions .changeset/component-css-variable-aliases.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
'@primer/react': patch
---

Components: Add component-scoped CSS variables for styling customization while preserving existing default styles.
48 changes: 34 additions & 14 deletions packages/react/src/ActionBar/ActionBar.module.css
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Original file line number Diff line number Diff line change
@@ -1,4 +1,7 @@
.List {
--ActionBar--list-height: var(--actionbar-height, var(--control-small-size));
--ActionBar--list-gap: var(--actionbar-gap, var(--stack-gap-condensed));

position: relative;
display: flex;
min-width: 0;
Expand All @@ -8,10 +11,10 @@
margin-bottom: -1px;
list-style: none;
align-items: flex-start;
gap: var(--actionbar-gap, var(--stack-gap-condensed));
gap: var(--ActionBar--list-gap);
overflow: hidden;
/* Explicit height is required to clip wrapped items */
height: var(--actionbar-height, var(--control-small-size));
height: var(--ActionBar--list-height);

/* Scroll-based animations have no effect unless the container is scrollable (has overflow, even with overflow:hidden)
so we can use them to detect overflow. It would be cleaner to use scroll-state container queries for this, but
Expand All @@ -30,28 +33,34 @@
}

&:where([data-size='small']) {
--actionbar-height: var(--control-small-size);
--ActionBar--list-actionbarHeight-sizeSmall: var(--control-small-size);
--actionbar-height: var(--ActionBar--list-actionbarHeight-sizeSmall);
}

&:where([data-size='medium']) {
--actionbar-height: var(--control-medium-size);
--ActionBar--list-actionbarHeight-sizeMedium: var(--control-medium-size);
--actionbar-height: var(--ActionBar--list-actionbarHeight-sizeMedium);
}

&:where([data-size='large']) {
--actionbar-height: var(--control-large-size);
--ActionBar--list-actionbarHeight-sizeLarge: var(--control-large-size);
--actionbar-height: var(--ActionBar--list-actionbarHeight-sizeLarge);
}

/* Gap scale (mirrors Stack) */
&:where([data-gap='none']) {
--actionbar-gap: 0;

.Divider {
padding: 0 var(--base-size-8);
--ActionBar--list-divider-padding-gapNone: 0 var(--base-size-8);

padding: var(--ActionBar--list-divider-padding-gapNone);
}
}

&:where([data-gap='condensed']) {
--actionbar-gap: var(--stack-gap-condensed);
--ActionBar--list-actionbarGap-gapCondensed: var(--stack-gap-condensed);
--actionbar-gap: var(--ActionBar--list-actionbarGap-gapCondensed);
}

& [data-overflowing] {
Expand All @@ -70,8 +79,10 @@
}

.Nav {
--ActionBar--nav-paddingInline: var(--base-size-16);

display: flex;
padding-inline: var(--base-size-16);
padding-inline: var(--ActionBar--nav-paddingInline);
justify-content: flex-end;
align-items: center;

Expand All @@ -82,14 +93,19 @@

.Divider {
&::before {
--ActionBar--divider-before-marginTop: calc((var(--actionbar-height) - var(--base-size-20)) / 2);
--ActionBar--divider-before-background: var(--borderColor-muted);
--ActionBar--divider-before-height: var(--base-size-20);
--ActionBar--divider-before-width: var(--borderWidth-thin);

display: block;
width: var(--borderWidth-thin);
height: var(--base-size-20);
width: var(--ActionBar--divider-before-width);
height: var(--ActionBar--divider-before-height);
content: '';
/* stylelint-disable-next-line primer/colors */
background: var(--borderColor-muted);
background: var(--ActionBar--divider-before-background);
/* stylelint-disable-next-line primer/spacing */
margin-top: calc((var(--actionbar-height) - var(--base-size-20)) / 2);
margin-top: var(--ActionBar--divider-before-marginTop);
}
}

Expand All @@ -109,10 +125,14 @@
contain: layout;

.OverflowSpacer {
height: var(--actionbar-height);
--ActionBar--overflowContainer-overflowSpacer-height: var(--actionbar-height);

height: var(--ActionBar--overflowContainer-overflowSpacer-height);
}
}

.MoreButton {
display: var(--morebutton-display, none);
--ActionBar--moreButton-display: var(--morebutton-display, none);

display: var(--ActionBar--moreButton-display);
}
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