magiccube-vue3/package/components/collapse-transition/index.js

vue3-js版组件库

import { addClass, removeClass } from '../../utils/dom'
import { h, Transition } from 'vue'

class TransitionFn {
    beforeEnter(el) {
        addClass(el, 'collapse-transition')
        !el.dataset && (el.dataset = {})

        el.dataset.oldPaddingTop = el.style.paddingTop
        el.dataset.oldPaddingBottom = el.style.paddingBottom

        el.style.height = '0'
        el.style.paddingTop = 0
        el.style.paddingBottom = 0
    }

    enter(el) {
        el.dataset.oldOverflow = el.style.overflow
        if (el.scrollHeight !== 0) {
            el.style.height = el.scrollHeight + 'px'
            el.style.paddingTop = el.dataset.oldPaddingTop
            el.style.paddingBottom = el.dataset.oldPaddingBottom
        } else {
            el.style.height = ''
            el.style.paddingTop = el.dataset.oldPaddingTop
            el.style.paddingBottom = el.dataset.oldPaddingBottom
        }

        el.style.overflow = 'hidden'
    }

    afterEnter(el) {
        // for safari: remove class then reset height is necessary
        removeClass(el, 'collapse-transition')
        el.style.height = ''
        el.style.overflow = el.dataset.oldOverflow
    }

    beforeLeave(el) {
        if (!el.dataset) el.dataset = {}
        el.dataset.oldPaddingTop = el.style.paddingTop
        el.dataset.oldPaddingBottom = el.style.paddingBottom
        el.dataset.oldOverflow = el.style.overflow

        el.style.height = el.scrollHeight + 'px'
        el.style.overflow = 'hidden'
    }

    leave(el) {
        if (el.scrollHeight !== 0) {
        // for safari: add class after set height, or it will jump to zero height suddenly, weired
            addClass(el, 'collapse-transition')
            el.style.height = 0
            el.style.paddingTop = 0
            el.style.paddingBottom = 0
        }
    }

    afterLeave(el) {
        removeClass(el, 'collapse-transition')
        el.style.height = ''
        el.style.overflow = el.dataset.oldOverflow
        el.style.paddingTop = el.dataset.oldPaddingTop
        el.style.paddingBottom = el.dataset.oldPaddingBottom
    }
}

const CollapseTransition = (props, context) => {
    const transitions = new TransitionFn()
    const data = {
        onBeforeEnter: transitions.beforeEnter,
        onEnter: transitions.enter,
        onAfterEnter: transitions.afterEnter,
        onBeforeLeave: transitions.beforeLeave,
        onLeave: transitions.leave,
        onAfterLeave: transitions.afterLeave
    }
    return h(Transition, data, context.slots)
}


CollapseTransition.install = (app) => {
    app.component(CollapseTransition.name, CollapseTransition)
}

const McCollapseTransition = CollapseTransition

export { McCollapseTransition, McCollapseTransition as default }