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@import "mediawiki.mixins";
@import "mediawiki.ui/variables";
// Checkbox
//
// Styling checkboxes in a way that works cross browser is a tricky problem to solve.
// In MediaWiki UI put a checkbox and label inside a mw-ui-checkbox div.
// This renders in all browsers except IE6-8 which do not support the :checked selector;
// these are kept backwards-compatible using the :not(#noop) selector.
// You should give the checkbox and label matching "id" and "for" attributes, respectively.
//
// Markup:
// <div class="mw-ui-checkbox">
// <input type="checkbox" id="kss-example-5"><label for="kss-example-5">Standard checkbox</label>
// </div>
// <div class="mw-ui-checkbox">
// <input type="checkbox" id="kss-example-5-2" disabled><label for="kss-example-5-2">Disabled checkbox</label>
// </div>
//
// Styleguide 5.
.mw-ui-checkbox {
display: inline-block;
vertical-align: middle;
}
@checkboxSize: 24px;
// We use the not selector to cancel out styling on IE 8 and below
.mw-ui-checkbox:not(#noop) {
// Position relatively so we can make use of absolute pseudo elements
position: relative;
line-height: @checkboxSize;
* {
vertical-align: middle;
}
input[type="checkbox"] {
// we hide the input element as instead we will style the label that follows
// we use opacity so that VoiceOver software can still identify it
opacity: 0;
// ensure the invisible checkbox takes up the required width
width: @checkboxSize;
height: @checkboxSize;
// the pseudo before element of the label after the checkbox now looks like a checkbox
& + label {
cursor: pointer;
&::before {
content: '';
position: absolute;
left: 0;
display: inline-block;
border-radius: @borderRadius;
margin-right: 18px;
width: @checkboxSize;
height: @checkboxSize;
background-color: #fff;
border: 1px solid grey;
}
}
// when the input is checked, style the label pseudo before element that followed as a checked checkbox
&:checked {
+ label {
&::before {
.background-image-svg('images/checked.svg', 'images/checked.png');
background-repeat: no-repeat;
background-position: center top;
}
}
}
@focusBottomBorderSize: 3px;
&:active,
&:focus {
+ label {
&::after {
content: '';
position: absolute;
width: @checkboxSize;
height: @checkboxSize - @focusBottomBorderSize + 1; // offset by bottom border
// offset from the checkbox by 1px to account for left border
left: 1px;
border-bottom: solid @focusBottomBorderSize lightgrey;
}
}
}
// disabled checked boxes have a gray background
&:disabled + label {
cursor: default;
&::before {
background-color: lightgrey;
}
}
}
}
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