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1d45abb015
Adding 'contain: paint' to the TOC container works around the issue. This property is intended to prevent element's rendering from affecting other elements, so it makes sense that this works. https://developer.mozilla.org/en-US/docs/Web/CSS/contain Because this property also clips the rendering of the element to its bounding box (similar to 'overflow: hidden'), we need to move some negative margins to this element from its children, otherwise the TOC expand/collapse arrows would be cut off. Bug: T327460 Change-Id: I34f414a99608450882e83c0ff22e64c05dff8807
77 lines
2.8 KiB
Plaintext
77 lines
2.8 KiB
Plaintext
@import '../../common/variables.less';
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.mw-table-of-contents-container {
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// Needed for Grid-based layout
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align-self: start;
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height: 100%;
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}
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@media ( min-width: @min-width-desktop ) {
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#mw-panel-toc {
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.vector-toc-pinned & {
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// Support: Chrome
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// Work around sticky-positioned layers disabling subpixel text rendering (T327460).
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// NOTE: This property has an effect similar to 'overflow: hidden', and will prevent elements
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// inside of the panel from being rendered outside of its bounding box, even when they would
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// be positioned there using absolute positioning, negative margin, transforms, etc.
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// That's why the negative margins have to be applied here, instead of on #vector-toc.
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contain: paint;
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}
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.vector-feature-page-tools-disabled.vector-toc-pinned & {
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// Align the left edge of the TOC text with the main menu button icon.
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margin-left: -27px;
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}
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.vector-feature-page-tools-enabled.vector-toc-pinned & {
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// Align the left edge of the TOC text with the page container
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margin-left: -@spacing-subsection-toggle;
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}
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}
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#vector-toc-pinned-container {
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// stylelint-disable-next-line plugin/no-unsupported-browser-features
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position: sticky;
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top: 0;
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.vector-toc-pinned & {
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// Default spacing separating the sidebar TOC from the main menu or viewport.
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// Need to use padding in order for the spacing to apply when sticky
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padding-top: 1.5em;
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}
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.vector-feature-page-tools-disabled.vector-toc-pinned @{selector-main-menu-closed} ~ .mw-table-of-contents-container & {
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// Needed to align TOC with bottom of title, 1.5em padding + 1.5em margin = 3em
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margin-top: 1.5em;
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}
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.vector-feature-page-tools-enabled.vector-toc-pinned.vector-feature-main-menu-pinned-disabled & {
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// Align TOC with bottom of title when main menu is not pinned but the TOC is
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margin-top: @margin-top-pinned-toc;
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}
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.vector-feature-page-tools-enabled & .vector-toc {
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padding-left: @spacing-subsection-toggle;
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padding-right: @padding-horizontal-dropdown-menu-item;
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// Add extra padding for the fade scrollable indicator, which is 30px tall
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padding-bottom: 20px;
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}
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// T302076: Add fade scrollable indicator when TOC is in sidebar
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// Avoid showing indicator when the TOC is floating, or collapsed in the page title/sticky header
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.vector-toc-pinned & .vector-toc:after {
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content: '';
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display: block;
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position: absolute;
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bottom: 0;
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left: 0;
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right: 0;
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height: @height-toc-scroll-indicator;
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background: linear-gradient( rgba( 255, 255, 255, 0 ), @background-color-page-container );
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background-repeat: no-repeat;
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background-position: -@scrollbar-offset-toc-scroll-indicator; // T311436 Hacky way to prevent the fade from covering the scrollbar
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pointer-events: none; // Make the link below the fade clickable
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}
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}
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}
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