Thanks to visit codestin.com
Credit goes to github.com

Skip to content

feat: support attached shadow dom elements #618

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Jan 9, 2023
Merged

feat: support attached shadow dom elements #618

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
942c055
feat: support attached shadow dom elements
breakthestatic Apr 22, 2022
536cc83
feat: support attached shadow dom elements - manual traversal
breakthestatic Apr 27, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
20 changes: 10 additions & 10 deletions src/isAttached.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,14 +2,14 @@
* Determine if an element is attached to the DOM
* Panzoom requires this so events work properly
*/
export default function isAttached(elem: HTMLElement | SVGElement | Document) {
const doc = elem.ownerDocument
const parent = elem.parentNode
return (
doc &&
parent &&
doc.nodeType === 9 &&
parent.nodeType === 1 &&
doc.documentElement.contains(parent)
)
export default function isAttached(node: Node) {
let currentNode = node
while (currentNode && currentNode.parentNode) {
if (currentNode.parentNode === document) return true
currentNode =
currentNode.parentNode instanceof ShadowRoot
? currentNode.parentNode.host
: currentNode.parentNode
}
return false
}
24 changes: 24 additions & 0 deletions test/unit/isAttached.test.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,30 @@ describe('isAttached', () => {
assert(isAttached(div))
document.body.removeChild(div)
})
it('determines if an attached shadow dom element is attached', () => {
const div = document.createElement('div')
const shadowChild = document.createElement('div')
div.attachShadow({ mode: 'open' }).appendChild(shadowChild)
document.body.appendChild(div)
assert(isAttached(shadowChild))
document.body.removeChild(div)
})
it('determines if a nested, attached shadow dom element is attached', () => {
const div = document.createElement('div')
const shadowChild = document.createElement('div')
const shadowGrandChild = document.createElement('div')
shadowChild.attachShadow({ mode: 'open' }).appendChild(shadowGrandChild)
div.attachShadow({ mode: 'open' }).appendChild(shadowChild)
document.body.appendChild(div)
assert(isAttached(shadowGrandChild))
document.body.removeChild(div)
})
it('determines if a detached shadow dom element is attached', () => {
const div = document.createElement('div')
const shadowChild = document.createElement('div')
div.attachShadow({ mode: 'open' }).appendChild(shadowChild)
assert(!isAttached(shadowChild))
})
it('determines if a detached element is attached', () => {
const div = document.createElement('div')
assert(!isAttached(div))
Expand Down