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use-anchor.js
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use-anchor.js
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import { ref, watch, onMounted, onBeforeUnmount, nextTick, getCurrentInstance } from 'vue'
import { clearSelection } from '../../utils/private.selection/selection.js'
import { addEvt, cleanEvt, prevent } from '../../utils/event/event.js'
import { isKeyCode } from '../../utils/private.keyboard/key-composition.js'
export const useAnchorStaticProps = {
/* SSR does not know about Element */
target: __QUASAR_SSR_SERVER__
? { default: true }
: {
type: [ Boolean, String, Element ],
default: true
},
noParentEvent: Boolean
}
export const useAnchorProps = {
...useAnchorStaticProps,
contextMenu: Boolean
}
export default function ({
showing,
avoidEmit, // required for QPopupProxy (true)
configureAnchorEl // optional
}) {
const { props, proxy, emit } = getCurrentInstance()
const anchorEl = ref(null)
let touchTimer = null
function canShow (evt) {
// abort with no parent configured or on multi-touch
return anchorEl.value === null
? false
: (evt === void 0 || evt.touches === void 0 || evt.touches.length <= 1)
}
const anchorEvents = {}
if (configureAnchorEl === void 0) {
// default configureAnchorEl is designed for
// QMenu & QPopupProxy (which is why it's handled here)
Object.assign(anchorEvents, {
hide (evt) {
proxy.hide(evt)
},
toggle (evt) {
proxy.toggle(evt)
evt.qAnchorHandled = true
},
toggleKey (evt) {
isKeyCode(evt, 13) === true && anchorEvents.toggle(evt)
},
contextClick (evt) {
proxy.hide(evt)
prevent(evt)
nextTick(() => {
proxy.show(evt)
evt.qAnchorHandled = true
})
},
prevent,
mobileTouch (evt) {
anchorEvents.mobileCleanup(evt)
if (canShow(evt) !== true) {
return
}
proxy.hide(evt)
anchorEl.value.classList.add('non-selectable')
const target = evt.target
addEvt(anchorEvents, 'anchor', [
[ target, 'touchmove', 'mobileCleanup', 'passive' ],
[ target, 'touchend', 'mobileCleanup', 'passive' ],
[ target, 'touchcancel', 'mobileCleanup', 'passive' ],
[ anchorEl.value, 'contextmenu', 'prevent', 'notPassive' ]
])
touchTimer = setTimeout(() => {
touchTimer = null
proxy.show(evt)
evt.qAnchorHandled = true
}, 300)
},
mobileCleanup (evt) {
anchorEl.value.classList.remove('non-selectable')
if (touchTimer !== null) {
clearTimeout(touchTimer)
touchTimer = null
}
if (showing.value === true && evt !== void 0) {
clearSelection()
}
}
})
configureAnchorEl = function (context = props.contextMenu) {
if (props.noParentEvent === true || anchorEl.value === null) return
let evts
if (context === true) {
if (proxy.$q.platform.is.mobile === true) {
evts = [
[ anchorEl.value, 'touchstart', 'mobileTouch', 'passive' ]
]
}
else {
evts = [
[ anchorEl.value, 'mousedown', 'hide', 'passive' ],
[ anchorEl.value, 'contextmenu', 'contextClick', 'notPassive' ]
]
}
}
else {
evts = [
[ anchorEl.value, 'click', 'toggle', 'passive' ],
[ anchorEl.value, 'keyup', 'toggleKey', 'passive' ]
]
}
addEvt(anchorEvents, 'anchor', evts)
}
}
function unconfigureAnchorEl () {
cleanEvt(anchorEvents, 'anchor')
}
function setAnchorEl (el) {
anchorEl.value = el
while (anchorEl.value.classList.contains('q-anchor--skip')) {
anchorEl.value = anchorEl.value.parentNode
}
configureAnchorEl()
}
function pickAnchorEl () {
if (props.target === false || props.target === '' || proxy.$el.parentNode === null) {
anchorEl.value = null
}
else if (props.target === true) {
setAnchorEl(proxy.$el.parentNode)
}
else {
let el = props.target
if (typeof props.target === 'string') {
try {
el = document.querySelector(props.target)
}
catch (err) {
el = void 0
}
}
if (el !== void 0 && el !== null) {
anchorEl.value = el.$el || el
configureAnchorEl()
}
else {
anchorEl.value = null
console.error(`Anchor: target "${ props.target }" not found`)
}
}
}
watch(() => props.contextMenu, val => {
if (anchorEl.value !== null) {
unconfigureAnchorEl()
configureAnchorEl(val)
}
})
watch(() => props.target, () => {
if (anchorEl.value !== null) {
unconfigureAnchorEl()
}
pickAnchorEl()
})
watch(() => props.noParentEvent, val => {
if (anchorEl.value !== null) {
if (val === true) {
unconfigureAnchorEl()
}
else {
configureAnchorEl()
}
}
})
onMounted(() => {
pickAnchorEl()
if (avoidEmit !== true && props.modelValue === true && anchorEl.value === null) {
emit('update:modelValue', false)
}
})
onBeforeUnmount(() => {
touchTimer !== null && clearTimeout(touchTimer)
unconfigureAnchorEl()
})
return {
anchorEl,
canShow,
anchorEvents
}
}