mediawiki-skins-MinervaNeue/components/ToggleList/ToggleList.less
Stephen Niedzielski edb4385345 Hygiene: extract ToggleList to a reusable component
A list that toggles visibility via the checkbox hack is needed in at
least two spots: the page actions overflow menu and the user menu. This
patch makes several refactors to turn what was previously hardcoded into
page actions a reusable component:

- Start a new components directory. Components are reusable and
  composable. The subdirectories are organized by function, not
  ResourceLoader module bundling which greatly improves the ability to
  see a component's full functionality in one directory instead of
  examining the entire codebase. See updates to README.

- Extract pageactions.less into:
  - ToggleList.less: LESS for any checkbox hack list.
  - DropDownList.less: LESS for lists that open downwards.
  - MenuListItem.less: LESS for list items of menus.
  The division makes it easier to see concerns, dependencies, and change
  code.

- Move pageActionMenu.mustache to a component and extract ToggleList
  template.

- Extract ToggleList.js from Toolbar.js.

Bug: T214540
Change-Id: I171831469a6733c458bc5c7ba249a5096ca975b8
2019-07-04 13:48:13 -06:00

52 lines
1.5 KiB
Plaintext

@import '../../minerva.less/minerva.variables';
.toggle-list__checkbox {
// Always occlude the checkbox. The checkbox display cannot be none since its focus state is used
// for other selectors.
position: absolute;
z-index: @z-indexOccluded;
opacity: 0;
}
.toggle-list__toggle {
// Use the hand icon for the toggle button which is actually a checkbox label.
cursor: pointer;
}
.toggle-list__checkbox:focus + .toggle-list__toggle {
// The toggle button / label itself cannot receive focus but the underlying checkbox can. Keep
// the button and checkbox focus presentation in sync. From
// resources/src/mediawiki.toc.styles/screen.less.
outline: dotted 1px; /* Firefox style for focus */
outline: auto @colorProgressiveHighlight; /* Webkit style for focus */
}
.touch-events .toggle-list__checkbox:focus + .toggle-list__toggle {
// Buttons have no focus outline on mobile.
outline: 0;
}
.toggle-list__list {
// The menu appears over the content and occupies no room within it.
position: absolute;
//
// If max-height is set and the height exceeds it, add a vertical scrollbar.
overflow-y: auto;
//
// The menu floats over content but below overlays.
z-index: @z-indexDrawer;
//
background: @skinContentBgColor;
box-shadow: 0 5px 17px 0 rgba( 0, 0, 0, 0.24 ), 0 0 1px @colorGray10;
border-radius: @borderRadius;
//
visibility: hidden;
opacity: 0;
}
.toggle-list__checkbox:checked ~ .toggle-list__list {
// Reveal the list when checked.
visibility: visible;
opacity: 1;
}