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button.less
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@import 'mediawiki.skin.variables.less';
@import 'mediawiki.mixins.less';
@import 'mediawiki.ui/mixins.buttons.less';
/* stylelint-disable selector-class-pattern */
// All buttons start with `.mw-ui-button` class, modified by other classes.
// It can be any element. Due to a lack of a CSS reset, the exact styling of
// the button depends on what type of element is used.
// There are two kinds of buttons, the default is a "Call to Action" with an obvious border
// and there is a quiet kind without a border.
// Neutral button styling
//
// These are the main actions on the page/workflow. The page should have only one of progressive and destructive buttons, the rest being quiet.
//
// Markup:
// <div>
// <button class="mw-ui-button">.mw-ui-button</button>
// </div>
// <div>
// <button class="mw-ui-button" disabled>.mw-ui-button</button>
// </div>
.mw-ui-button {
background-color: @background-color-interactive-subtle;
border-color: @border-color-base;
color: @color-base;
.mw-ui-button();
.mw-ui-button-states();
// If a sibling element is a checklist, the state should also apply to the button.
input[ type='checkbox' ]:hover + &,
&:hover {
background-color: @background-color-base;
color: @color-base--hover;
}
input[ type='checkbox' ]:focus + &,
&:focus {
// Make sure that `color` isn't inheriting from user-agent styles
color: @color-base;
border-color: @border-color-progressive--focus;
box-shadow: @box-shadow-inset-small @box-shadow-color-progressive--focus;
// Set the standard focus `outline` transparent. A `border` and `box-shadow` visual
// focus is added above for common rendering.
// In Windows high contrast mode the transparent outline becomes visible.
// As vendor stylesheets set the outline on `:focus`, we need to follow here too and
// can't rely on the next selector to override it.
outline: @outline-base--focus;
}
input[ type='checkbox' ]:active + &,
&:active {
background-color: @background-color-interactive;
color: @color-emphasized;
border-color: @border-color-interactive;
box-shadow: none;
}
&.mw-ui-icon-element {
&:not( .mw-ui-icon-with-label-desktop ) {
/* stylelint-disable-next-line declaration-no-important */
color: transparent !important;
span:not( .mw-ui-icon ) {
.mixin-screen-reader-text();
}
}
@media all and ( max-width: @max-width-breakpoint-tablet ) {
span:not( .mw-ui-icon ) {
.mixin-screen-reader-text();
}
&.mw-ui-icon-with-label-desktop {
/* stylelint-disable-next-line declaration-no-important */
color: transparent !important;
}
}
}
// Styling for specific button types
// -----------------------------------------
// Quiet buttons
//
// Use quiet buttons when they are less important and alongside other progressive or destructive buttons. It should be used for an action that exits the user from the current view/workflow.
// Its use is not recommended on mobile/tablet due to lack of hover state.
//
// Markup:
// <div>
// <button class="mw-ui-button mw-ui-quiet">.mw-ui-button</button>
// </div>
// <div>
// <button class="mw-ui-button mw-ui-destructive mw-ui-quiet">.mw-ui-destructive</button>
// </div>
// <div>
// <button class="mw-ui-button mw-ui-destructive mw-ui-quiet" disabled>.mw-ui-destructive</button>
// </div>
// <div>
// <button class="mw-ui-button mw-ui-progressive mw-ui-quiet">.mw-ui-progressive</button>
// </div>
// <div>
// <button class="mw-ui-button mw-ui-progressive mw-ui-quiet" disabled>.mw-ui-progressive</button>
// </div>
&.mw-ui-quiet,
&.mw-ui-quiet.mw-ui-progressive,
&.mw-ui-quiet.mw-ui-destructive {
background-color: transparent;
// Quiet buttons all start gray, and reveal
// progressive/destructive color on hover and active.
color: @color-base;
border-color: @border-color-transparent;
font-weight: bold;
&:not( .mw-ui-icon-element ) {
min-height: 32px;
}
// If a sibling element is a checklist, the state should also apply to the button.
input[ type='checkbox' ]:hover + &,
&:hover {
background-color: @background-color-button-quiet--hover;
color: @color-base;
}
input[ type='checkbox' ]:focus + &,
&:focus {
color: @color-base;
border-color: @border-color-progressive--focus;
box-shadow: @box-shadow-inset-small @box-shadow-color-progressive--focus;
}
input[ type='checkbox' ]:active + &,
&:active {
background-color: @background-color-button-quiet--active;
color: @color-emphasized;
border-color: @border-color-interactive;
box-shadow: none;
}
&:disabled,
&:disabled:hover,
&:disabled:active {
background-color: @background-color-transparent;
color: @color-disabled;
border-color: @border-color-transparent;
}
}
// Progressive buttons
//
// Use progressive buttons for actions which lead to a next step in the process.
//
// Markup:
// <div>
// <button class="mw-ui-button mw-ui-progressive">.mw-ui-progressive</button>
// </div>
// <div>
// <button class="mw-ui-button mw-ui-progressive" disabled>.mw-ui-progressive</button>
// </div>
&.mw-ui-progressive {
.mw-ui-button-colors-primary( @color-progressive, @color-progressive--hover, @color-progressive--active );
&.mw-ui-quiet {
background-color: @background-color-transparent;
color: @color-progressive;
border-color: @border-color-transparent;
input[ type='checkbox' ]:hover + &,
&:hover {
// TODO: Should be a token.
// This came out of `background-color-primary` by mediawiki.ui.
// Value was `fade( #347bff, 20% )`, which results in `rgba( 52, 123, 255, 0.2 )`.
// WikimediaUI Base was featuring
// `@background-color-primary--hover: rgba( 41, 98, 204, 0.1 )` in contrast.
// Let's keep this static for the time being and revisit with a new Codex token.
background-color: rgba( 52, 123, 255, 0.2 );
color: @color-progressive--hover;
border-color: @border-color-transparent;
}
input[ type='checkbox' ]:focus + &,
&:focus {
color: @color-progressive--focus;
border-color: @color-progressive--focus;
}
input[ type='checkbox' ]:active + &,
&:active {
color: @color-inverted;
background-color: @color-progressive--active;
border-color: @color-progressive--active;
}
}
}
// Destructive buttons
//
// Use destructive buttons for actions that remove or limit, such as deleting a page or blocking a user.
// This should not be used for cancel buttons.
//
// Markup:
// <div>
// <button class="mw-ui-button mw-ui-destructive">.mw-ui-destructive</button>
// </div>
// <div>
// <button class="mw-ui-button mw-ui-destructive" disabled>.mw-ui-destructive</button>
// </div>
&.mw-ui-destructive {
.mw-ui-button-colors-primary( @color-destructive, @color-destructive--hover, @color-destructive--active );
&.mw-ui-quiet {
color: @color-destructive;
background-color: @background-color-transparent;
border-color: @border-color-transparent;
input[ type='checkbox' ]:hover + &,
&:hover {
background-color: @background-color-destructive--hover;
border-color: @border-color-transparent;
color: @color-destructive--hover;
}
input[ type='checkbox' ]:focus + &,
&:focus {
color: @color-destructive;
border-color: @color-destructive--focus;
}
input[ type='checkbox' ]:active + &,
&:active {
color: @color-inverted;
background-color: @color-destructive--active;
border-color: @color-destructive--active;
}
}
}
// Big buttons
//
// Not all buttons are equal. You can emphasise certain actions over others
// using the mw-ui-big class.
//
// Markup:
// <div>
// <button class="mw-ui-button mw-ui-big">.mw-ui-button</button>
// </div>
// <div>
// <button class="mw-ui-button mw-ui-progressive mw-ui-big">.mw-ui-progressive</button>
// </div>
// <div>
// <button class="mw-ui-button mw-ui-destructive mw-ui-big">.mw-ui-destructive</button>
// </div>
&.mw-ui-big {
font-size: 1.3em;
}
// Block buttons
//
// Some buttons might need to be stacked.
//
// Markup:
// <div>
// <button class="mw-ui-button mw-ui-block">.mw-ui-button</button>
// </div>
// <div>
// <button class="mw-ui-button mw-ui-progressive mw-ui-block">.mw-ui-progressive</button>
// </div>
// <div>
// <button class="mw-ui-button mw-ui-destructive mw-ui-block">.mw-ui-destructive</button>
// </div>
&.mw-ui-block {
display: block;
width: 100%;
margin-left: auto;
margin-right: auto;
}
}
a.mw-ui-button {
text-decoration: none;
// This overrides an underline declaration on a:hover and a:focus in
// commonElements.css, which the class alone isn't specific enough to do.
&:hover,
&:focus {
text-decoration: none;
}
}
// Button groups
//
// Group of buttons. Make sure you clear the floating after using a mw-ui-button-group.
//
// Markup:
// <div class="mw-ui-button-group">
// <div class="mw-ui-button is-on">A</div>
// <div class="mw-ui-button">B</div>
// <div class="mw-ui-button">C</div>
// <div class="mw-ui-button">D</div>
// </div><div style="clear:both"></div>
.mw-ui-button-group {
& > * {
min-width: 48px;
border-radius: 0;
float: left;
&:first-child {
border-top-left-radius: @border-radius-base;
border-bottom-left-radius: @border-radius-base;
}
&:not( :first-child ) {
border-left: 0;
}
&:last-child {
border-top-right-radius: @border-radius-base;
border-bottom-right-radius: @border-radius-base;
}
}
& .is-on .button {
cursor: @cursor-base;
}
}

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