let lock = true
let el = null
// const MousedownEvent = new Event('mousedown', { bubbles: true })
// const MouseupEvent = new Event('mouseup', { bubbles: true })
const MousedownEvent = document.createEvent('Events')
MousedownEvent.initEvent('mousedown', true, true)
const MouseupEvent = document.createEvent('Events')
MouseupEvent.initEvent('mouseup', true, true)
const fakeClickOutSide = () => {
    document.dispatchEvent(MousedownEvent)
    document.dispatchEvent(MouseupEvent)
    lock = true // console.log('dispatchEvent');
}
const mousedownHandle = e => {
    const classList = e.target.classList
    if (classList.contains('el-select__caret') || classList.contains('el-input__inner') || classList.contains('el-select__tags')) {
        lock = false
        return
    }
    if (lock) return
    fakeClickOutSide()
}
const mousewheelHandle = e => {
    if (lock || e.target.classList.contains('el-select-dropdown__item') || e.target.parentNode.classList.contains('el-select-dropdown__item') || e.target.classList.contains('el-cascader-node__label') || e.target.parentNode.classList.contains('el-cascader-node__label')) return
    fakeClickOutSide()
}
const eventListener = (type) => {
    el[type + 'EventListener']('mousedown', mousedownHandle)
    window[type + 'EventListener']('mousewheel', mousewheelHandle)
    window[type + 'EventListener']('DOMMouseScroll', mousewheelHandle) // fireFox 3.5+
}
export default {
    mounted() {
        el = this.$root.$el
        el.addFakeClickOutSideEventCount = el.addFakeClickOutSideEventCount || 0;
        (!el.addFakeClickOutSideEventCount) && this.$nextTick(() => {
            eventListener('add')
        })
        el.addFakeClickOutSideEventCount += 1
    },
    destroyed() {
        eventListener('remove')
        el.addFakeClickOutSideEventCount -= 1
    }
}