Current File : //www/varak.net/nextcloud.varak.net/apps_old/apps/bookmarks/src/directives/drop-target.js
/*
* Copyright (c) 2021. The Nextcloud Bookmarks contributors.
*
* This file is licensed under the Affero General Public License version 3 or later. See the COPYING file.
*/
export default {
bind(el, binding) {
const allowDrop = binding.value.allow
const drop = binding.value.drop
let dropTargetEntered = 0
el.addEventListener('dragenter', (e) => {
if (allowDrop(e)) {
e.preventDefault()
// for every descendant of this element, increment
// when this is 0, the dropTarget class is removed
dropTargetEntered++
e.dataTransfer.dropEffect = 'move'
if (dropTargetEntered === 1) {
el.classList.add('dropTarget--active')
}
}
})
el.addEventListener('dragover', (e) => {
if (allowDrop()) {
e.preventDefault()
}
})
el.addEventListener('dragleave', (e) => {
// for every descendant of this element, decrement
// when this is 0, the dropTarget class is removed
dropTargetEntered = Math.max(0, dropTargetEntered - 1)
if (dropTargetEntered === 0) {
el.classList.remove('dropTarget--active')
}
})
el.addEventListener('drop', (e) => {
dropTargetEntered = 0
drop(e)
el.classList.remove('dropTarget--active')
const targets = document.querySelectorAll('.dropTarget--available')
targets.forEach(el => {
el.classList.remove('dropTarget--available')
})
})
window.document.body.addEventListener('dragend', (e) => {
const targets = document.querySelectorAll('.dropTarget--available')
targets.forEach(el => {
el.classList.remove('dropTarget--available')
})
})
window.document.body.addEventListener('dragstart', (e) => {
if (allowDrop(e)) {
el.classList.add('dropTarget--available')
}
})
},
}
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