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<div
class="cdx-menu-button"
:class="rootClasses"
:style="rootStyle"
>
<cdx-toggle-button
:id="toggleId"
ref="toggle"
v-bind="otherAttrs"
v-model="expanded"
:disabled="computedDisabled"
quiet
aria-haspopup="menu"
:aria-controls="menuId"
:aria-expanded="expanded"
@blur="expanded = false"
@keydown="onKeydown"
>
<!-- @slot MenuButton content -->
<slot />
</cdx-toggle-button>
<div class="cdx-menu-button__menu-wrapper">
<cdx-menu
:id="menuId"
ref="menu"
v-model:selected="modelWrapper"
v-model:expanded="expanded"
:menu-items="menuItems"
v-bind="menuConfig"
role="menu"
:aria-labelledby="toggleId"
/>
</div>
</div>
</template>
<script lang="ts">
import {
PropType,
Ref,
ComponentPublicInstance,
defineComponent,
ref,
toRef
} from 'vue';
import CdxToggleButton from '../toggle-button/ToggleButton.vue';
import CdxMenu from '../menu/Menu.vue';
import useFieldData from '../../composables/useFieldData';
import useFloatingMenu from '../../composables/useFloatingMenu';
import useGeneratedId from '../../composables/useGeneratedId';
import useModelWrapper from '../../composables/useModelWrapper';
import useSplitAttributes from '../../composables/useSplitAttributes';
import { MenuButtonItemData, MenuConfig } from '../../types';
export default defineComponent( {
name: 'CdxMenuButton',
components: {
CdxToggleButton,
CdxMenu
},
inheritAttrs: false,
props: {
/**
* Value of the current selection.
*
* Must be bound with `v-model:selected`.
*/
selected: {
type: [ String, Number, null ] as PropType<string|number|null>,
required: true
},
/**
* Menu items. See the MenuItemData type.
*/
menuItems: {
type: Array as PropType<MenuButtonItemData[]>,
required: true
},
/**
* Configuration for various menu features. All properties default to false.
*
* See the MenuConfig type.
*/
menuConfig: {
type: Object as PropType<MenuConfig>,
default: () => {
return {} as MenuConfig;
}
},
/**
* Whether the dropdown is disabled.
*/
disabled: {
type: Boolean,
default: false
}
},
emits: [
/**
* When the selected value changes.
*
* @property {string | number} selected The new selected value
*/
'update:selected'
],
setup( props, { emit, attrs } ) {
const menu = ref<InstanceType<typeof CdxMenu>>();
const toggle = ref<InstanceType<typeof CdxToggleButton>>();
const selectedProp = toRef( props, 'selected' );
const modelWrapper = useModelWrapper( selectedProp, emit, 'update:selected' );
const expanded = ref( false );
const toggleId = useGeneratedId( 'menuToggle' );
const menuId = useGeneratedId( 'menu' );
const { computedDisabled } = useFieldData( toRef( props, 'disabled' ) );
// Get helpers from useSplitAttributes() composable.
const { rootClasses, rootStyle, otherAttrs } = useSplitAttributes( attrs );
function onKeydown( e: KeyboardEvent ) {
if (
!menu.value ||
computedDisabled.value ||
props.menuItems.length === 0 ||
e.key === ' '
) {
return;
}
menu.value.delegateKeyNavigation( e );
}
useFloatingMenu( toggle as Ref<ComponentPublicInstance>, menu, {
useAvailableWidth: true,
placement: 'bottom-start',
offset: 4
} );
return {
computedDisabled,
expanded,
menu,
menuId,
modelWrapper,
onKeydown,
toggle,
toggleId,
rootClasses,
rootStyle,
otherAttrs
};
}
} );
</script>
<style lang="less">
@import ( reference ) '@wikimedia/codex-design-tokens/theme-wikimedia-ui.less';
.cdx-menu-button {
&__menu-wrapper {
position: relative;
}
.cdx-menu {
min-width: @size-800;
max-width: @size-1600;
}
// Overrides when used within a Dialog component
.cdx-dialog & {
// The menu is positioned relative to the dialog backdrop, not the triggering element.
position: static;
}
}
</style>
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