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Changing Backdrop rootElement to default to a string (#34092)

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The current config can cause the "body" to become stale. Specifically,
if the entire body element is swapped out for a new body element, then
the backdrop will continue to append itself to the original body element,
since it's stored in memory as a reference on this object.

This also no longer allows an explicit null to be passed to Backdrop's rootElement

This still accomplishes the laziness of "not finding the rootElement
until the Backdrop is created" to avoid problems of the JavaScript
being included inside <head> (so, before body is available).
This commit is contained in:
Ryan Weaver
2021-05-31 05:35:59 -04:00
committed by GitHub
parent e818c7cd5d
commit 0cb70e214f
2 changed files with 7 additions and 6 deletions
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9
js/src/util/backdrop.js
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@@ -6,19 +6,19 @@
*/
import EventHandler from '../dom/event-handler'
import { emulateTransitionEnd, execute, getTransitionDurationFromElement, reflow, typeCheckConfig } from './index'
import { emulateTransitionEnd, execute, getElement, getTransitionDurationFromElement, reflow, typeCheckConfig } from './index'
const Default = {
isVisible: true, // if false, we use the backdrop helper without adding any element to the dom
isAnimated: false,
rootElement: document.body, // give the choice to place backdrop under different elements
rootElement: 'body', // give the choice to place backdrop under different elements
clickCallback: null
}
const DefaultType = {
isVisible: 'boolean',
isAnimated: 'boolean',
rootElement: 'element',
rootElement: '(element|string)',
clickCallback: '(function|null)'
}
const NAME = 'backdrop'
@@ -90,7 +90,8 @@ class Backdrop {
...(typeof config === 'object' ? config : {})
}
config.rootElement = config.rootElement || document.body
// use getElement() with the default "body" to get a fresh Element on each instantiation
config.rootElement = getElement(config.rootElement)
typeCheckConfig(NAME, config, DefaultType)
return config
}