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CollapsibleContainerNode.ts
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CollapsibleContainerNode.ts
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/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
*/
import {
DOMConversionMap,
DOMConversionOutput,
DOMExportOutput,
EditorConfig,
ElementNode,
isHTMLElement,
LexicalEditor,
LexicalNode,
NodeKey,
SerializedElementNode,
Spread,
} from 'lexical';
import {IS_CHROME} from 'shared/environment';
import invariant from 'shared/invariant';
import {setDomHiddenUntilFound} from './CollapsibleUtils';
type SerializedCollapsibleContainerNode = Spread<
{
open: boolean;
},
SerializedElementNode
>;
export function $convertDetailsElement(
domNode: HTMLDetailsElement,
): DOMConversionOutput | null {
const isOpen = domNode.open !== undefined ? domNode.open : true;
const node = $createCollapsibleContainerNode(isOpen);
return {
node,
};
}
export class CollapsibleContainerNode extends ElementNode {
__open: boolean;
constructor(open: boolean, key?: NodeKey) {
super(key);
this.__open = open;
}
static getType(): string {
return 'collapsible-container';
}
static clone(node: CollapsibleContainerNode): CollapsibleContainerNode {
return new CollapsibleContainerNode(node.__open, node.__key);
}
createDOM(config: EditorConfig, editor: LexicalEditor): HTMLElement {
// details is not well supported in Chrome #5582
let dom: HTMLElement;
if (IS_CHROME) {
dom = document.createElement('div');
dom.setAttribute('open', '');
} else {
const detailsDom = document.createElement('details');
detailsDom.open = this.__open;
detailsDom.addEventListener('toggle', () => {
const open = editor.getEditorState().read(() => this.getOpen());
if (open !== detailsDom.open) {
editor.update(() => this.toggleOpen());
}
});
dom = detailsDom;
}
dom.classList.add('Collapsible__container');
return dom;
}
updateDOM(
prevNode: CollapsibleContainerNode,
dom: HTMLDetailsElement,
): boolean {
const currentOpen = this.__open;
if (prevNode.__open !== currentOpen) {
// details is not well supported in Chrome #5582
if (IS_CHROME) {
const contentDom = dom.children[1];
invariant(
isHTMLElement(contentDom),
'Expected contentDom to be an HTMLElement',
);
if (currentOpen) {
dom.setAttribute('open', '');
contentDom.hidden = false;
} else {
dom.removeAttribute('open');
setDomHiddenUntilFound(contentDom);
}
} else {
dom.open = this.__open;
}
}
return false;
}
static importDOM(): DOMConversionMap<HTMLDetailsElement> | null {
return {
details: (domNode: HTMLDetailsElement) => {
return {
conversion: $convertDetailsElement,
priority: 1,
};
},
};
}
static importJSON(
serializedNode: SerializedCollapsibleContainerNode,
): CollapsibleContainerNode {
const node = $createCollapsibleContainerNode(serializedNode.open);
return node;
}
exportDOM(): DOMExportOutput {
const element = document.createElement('details');
element.classList.add('Collapsible__container');
element.setAttribute('open', this.__open.toString());
return {element};
}
exportJSON(): SerializedCollapsibleContainerNode {
return {
...super.exportJSON(),
open: this.__open,
type: 'collapsible-container',
version: 1,
};
}
setOpen(open: boolean): void {
const writable = this.getWritable();
writable.__open = open;
}
getOpen(): boolean {
return this.getLatest().__open;
}
toggleOpen(): void {
this.setOpen(!this.getOpen());
}
}
export function $createCollapsibleContainerNode(
isOpen: boolean,
): CollapsibleContainerNode {
return new CollapsibleContainerNode(isOpen);
}
export function $isCollapsibleContainerNode(
node: LexicalNode | null | undefined,
): node is CollapsibleContainerNode {
return node instanceof CollapsibleContainerNode;
}