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<button
class="cdx-toggle-button"
:class="rootClasses"
:aria-pressed="modelValue"
:disabled="disabled"
@click="onClick"
@keydown.space.enter="setActive( true )"
@keyup.space.enter="setActive( false )"
>
<!-- @slot Button content -->
<slot />
</button>
</template>
<script lang="ts">
import { ref, computed, defineComponent } from 'vue';
import useIconOnlyButton from '../../composables/useIconOnlyButton';
/**
* A button that can be toggled on and off.
*/
export default defineComponent( {
name: 'CdxToggleButton',
props: {
/**
* Whether the button should be set to "on" (true) or "off" (false).
*
* Provided by `v-model` binding in the parent component.
*/
modelValue: {
type: Boolean,
default: false
},
/**
* Whether the disabled attribute should be added to the button, which prevents
* it from being clicked.
*/
disabled: {
type: Boolean,
default: false
},
/**
* Whether the toggle button should be "quiet", which renders more minimally.
*/
quiet: {
type: Boolean,
default: false
}
},
emits: [
/**
* Emitted when modelValue changes (i.e. when the state is toggled)
*
* @property {boolean} modelValue The new model value
*/
'update:modelValue'
],
setup( props, { emit, slots, attrs } ) {
const isIconOnly = useIconOnlyButton( slots.default, attrs, 'CdxButton' );
// Support: Firefox (space), all (enter)
// Whether the button is being pressed via the space or enter key. Needed to apply
// consistent active styles across browsers. For mousedown/mouseup, the browser's native
// :active state will suffice.
const isActive = ref( false );
const rootClasses = computed( () => ( {
// Quiet means frameless among other things
'cdx-toggle-button--quiet': props.quiet,
'cdx-toggle-button--framed': !props.quiet,
// Provide --toggled-off too so that we can simplify selectors
'cdx-toggle-button--toggled-on': props.modelValue,
'cdx-toggle-button--toggled-off': !props.modelValue,
'cdx-toggle-button--icon-only': isIconOnly.value,
'cdx-toggle-button--is-active': isActive.value
} ) );
const onClick = (): void => {
emit( 'update:modelValue', !props.modelValue );
};
const setActive = ( active: boolean ) => {
isActive.value = active;
};
return {
rootClasses,
onClick,
setActive
};
}
} );
</script>
<style lang="less">
@import ( reference ) '@wikimedia/codex-design-tokens/theme-wikimedia-ui.less';
@import ( reference ) '../../themes/mixins/button.less';
// Common styles for framed and quiet versions
.cdx-toggle-button {
// mixin for common base styles for buttons
.cdx-mixin-button();
&:enabled {
color: @color-base;
&:hover {
// Use hand cursor. This is nonstandard for a button but allows for a visible
// interactivity distinction from the disabled state.
cursor: @cursor-base--hover;
}
&:focus {
border-color: @border-color-progressive--focus;
box-shadow: @box-shadow-inset-small @box-shadow-color-progressive--focus;
// In Windows high contrast mode the outline becomes visible.
outline: @outline-base--focus;
}
&:active,
&.cdx-toggle-button--is-active {
color: @color-emphasized;
border-color: @border-color-interactive;
box-shadow: none;
}
}
.cdx-icon {
// Any icons used in the toggle button content should have the same color as the
// rest of the content. This overrides the color rule in Icon.vue.
color: inherit;
// TODO: The vertical alignment in the current DOM structure is not ideal. The icon should
// be aligned with the text baseline, but this doesn't work well in our multi font-size
// skin setup in MediaWiki. This is a temporary compromise to be resolved with either
// skin specific CSS or a DOM structure change. See T326900.
vertical-align: middle;
}
}
// Framed version
.cdx-toggle-button--framed {
&:enabled {
background-color: @background-color-interactive-subtle;
border-color: @border-color-base;
&:hover {
background-color: @background-color-base;
color: @color-base--hover;
}
// Enabled + active state has some shared styles for quiet and framed, see above.
&:active,
&.cdx-toggle-button--is-active {
background-color: @background-color-interactive;
}
// &:enabled:focus has some shared styles for quiet and framed, see above.
}
/* stylelint-disable-next-line no-descending-specificity */
&:disabled {
background-color: @background-color-disabled;
color: @color-inverted;
border-color: @border-color-disabled;
}
&.cdx-toggle-button--toggled-on:enabled {
background-color: @background-color-progressive--active;
color: @color-inverted-fixed;
border-color: @border-color-progressive--active;
&:hover {
background-color: @background-color-progressive--hover;
// Same color as not hovering, needed to override the other :hover rule above
color: @color-inverted-fixed;
border-color: @border-color-progressive--hover;
}
&:focus {
border-color: @border-color-progressive--focus;
// Make `box-shadow` feature a `1px` White inset outline with a value combination.
/* stylelint-disable-next-line stylistic/declaration-colon-newline-after,
stylistic/value-list-comma-newline-after */
box-shadow: @box-shadow-inset-small @box-shadow-color-progressive--focus,
@box-shadow-inset-medium @box-shadow-color-inverted;
}
&:active,
&.cdx-toggle-button--is-active {
background-color: @background-color-interactive;
// Repeat general enabled + active styles here, to override more specific
// color/border-color/box-shadow rules
color: @color-emphasized;
border-color: @border-color-interactive;
box-shadow: none;
}
}
}
// Quiet toggle button
.cdx-toggle-button--quiet {
// Override `<button>` default background color.
background-color: @background-color-transparent;
border-color: @border-color-transparent;
&:enabled {
&.cdx-toggle-button--toggled-on {
background-color: @background-color-interactive;
}
&:hover {
background-color: @background-color-interactive-subtle;
}
// `&:enabled:focus` has some shared styles for quiet and framed, see above.
&:focus {
background-color: @background-color-interactive-subtle;
}
// Enabled + active state has some shared styles for quiet and framed, see above
&:active,
&.cdx-toggle-button--is-active {
background-color: @background-color-interactive;
}
}
// No difference between disabled toggled-on and toggled-off.
/* stylelint-disable-next-line no-descending-specificity */
&:disabled {
color: @color-disabled;
}
}
</style>
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