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Overlay.tsx
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Overlay.tsx
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/**
* @license
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://github.com/IDuxFE/idux/blob/main/LICENSE
*/
import {
type ComputedRef,
type Ref,
Transition,
type VNode,
cloneVNode,
computed,
defineComponent,
onBeforeUnmount,
onMounted,
ref,
toRef,
vShow,
watch,
withDirectives,
} from 'vue'
import { isFunction } from 'lodash-es'
import { vClickOutside } from '@idux/cdk/click-outside'
import { type PopperElement, type PopperEvents, type PopperOptions, usePopper } from '@idux/cdk/popper'
import { CdkPortal } from '@idux/cdk/portal'
import { Logger, callEmit, convertElement, getFirstValidNode, useState } from '@idux/cdk/utils'
import { useGlobalConfig } from '@idux/components/config'
import { useZIndex } from '@idux/components/utils'
import { type OverlayProps, overlayProps } from './types'
export default defineComponent({
name: 'ɵOverlay',
inheritAttrs: false,
props: overlayProps,
setup(props, { slots, attrs, expose }) {
const common = useGlobalConfig('common')
const mergedPrefixCls = computed(() => `${common.prefixCls}-overlay`)
const contentArrowRef = ref<HTMLElement>()
const popperOptions = usePopperOptions(props, contentArrowRef)
const {
arrowRef,
popperRef,
popperEvents,
triggerRef,
triggerEvents,
visibility,
placement,
initialize,
update,
show,
hide,
destroy,
} = usePopper({ ...popperOptions.value, visible: props.visible })
const currentZIndex = useZIndex(toRef(props, 'zIndex'), toRef(common, 'overlayZIndex'), visibility)
const mergedContainer = computed(() => {
const { container = common.overlayContainer } = props
return (isFunction(container) ? container(convertElement(triggerRef)!) : container) ?? props.containerFallback
})
onMounted(() => initialize())
onBeforeUnmount(() => destroy())
watch(visibility, value => callEmit(props['onUpdate:visible'], value))
watch(placement, value => callEmit(props['onUpdate:placement'], value))
watch(popperOptions, options => update(options))
watch(
() => props.visible,
visible => {
visible ? show() : hide()
if (visible && props.destroyOnHide) {
initialize()
}
},
{ flush: 'post' },
)
watch(
contentArrowRef,
() => {
arrowRef.value = contentArrowRef.value
},
{ immediate: true },
)
const [isAnimating, setIsAnimating] = useState(false)
const onBeforeEnter = () => {
setIsAnimating(true)
}
const onAfterLeave = () => {
setIsAnimating(false)
if (props.destroyOnHide) {
destroy()
}
callEmit(props.onAfterLeave)
}
expose({
updatePopper: update,
})
const handleClickOutside = (evt: Event) => {
const popperElement = convertElement(popperRef)
const target = evt.target as Node
if (!popperElement || popperElement === target || popperElement.contains(target)) {
return
}
hide()
}
return () => {
const triggerNode = getFirstValidNode(slots.default?.())
if (!triggerNode) {
__DEV__ && Logger.warn('components/overlay', 'Trigger must is single rooted node')
return null
}
const trigger = renderTrigger(props, triggerNode, { ref: triggerRef, ...triggerEvents.value }, handleClickOutside)
const contentNode = slots.content?.()
if (!getFirstValidNode(contentNode)) {
// 避免没有 content 时, trigger 被重新创建
return (
<>
{trigger}
<CdkPortal target={mergedContainer.value} load={false}></CdkPortal>
</>
)
}
const content = renderContent(
props,
mergedPrefixCls,
visibility,
isAnimating,
currentZIndex,
contentNode!,
contentArrowRef,
popperRef,
popperEvents,
attrs,
)
return (
<>
{trigger}
<CdkPortal target={mergedContainer.value} load={visibility.value}>
<Transition appear name={props.transitionName} onBeforeEnter={onBeforeEnter} onAfterLeave={onAfterLeave}>
{content}
</Transition>
</CdkPortal>
</>
)
}
},
})
function usePopperOptions(props: OverlayProps, arrowRef: Ref<HTMLElement | undefined>): ComputedRef<PopperOptions> {
return computed(() => {
const { allowEnter, autoAdjust, delay, disabled, offset, placement, trigger } = props
let _offset: [number, number] | undefined
if (!arrowRef.value) {
_offset = offset
} else {
const { offsetWidth, offsetHeight } = arrowRef.value
_offset = offset ? [...offset] : [0, 0]
_offset[1] += [offsetWidth, offsetHeight][1] / 2
}
return { allowEnter, autoAdjust, delay, disabled, offset: _offset, placement, trigger }
})
}
function renderContent(
props: OverlayProps,
mergedPrefixCls: ComputedRef<string>,
visibility: ComputedRef<boolean>,
isAnimating: ComputedRef<boolean>,
currentZIndex: ComputedRef<number>,
contentNode: VNode[],
arrowRef: Ref<PopperElement | undefined>,
popperRef: Ref<PopperElement | undefined>,
popperEvents: ComputedRef<PopperEvents>,
attrs: Record<string, unknown>,
) {
if (props.destroyOnHide && !visibility.value) {
return null
}
const prefixCls = mergedPrefixCls.value
const classes = {
[prefixCls]: true,
[`${prefixCls}-animating`]: isAnimating.value,
}
const { triggerId } = props
const overlayId = triggerId != null ? `__IDUX_OVERLAY-${triggerId}` : undefined
const style = `z-index: ${currentZIndex.value}`
const overlay = (
<div ref={popperRef} id={overlayId} class={classes} style={style} {...popperEvents.value} {...attrs}>
{contentNode}
{props.showArrow && <div ref={arrowRef} class={`${prefixCls}-arrow`}></div>}
</div>
)
return props.destroyOnHide ? overlay : withDirectives(overlay, [[vShow, visibility.value]])
}
function renderTrigger(
props: OverlayProps,
triggerNode: VNode,
extraProps: Record<string, unknown>,
handleClickOutside: (evt: Event) => void,
) {
const element = cloneVNode(triggerNode, extraProps, true)
if (props.clickOutside) {
return withDirectives(element, [[vClickOutside, handleClickOutside]])
}
return element
}