Current File : /home/ugotscom/bos_naturals/node_modules/preact/compat/src/portals.js
import { createElement, render } from 'preact';
/**
* @param {import('../../src/index').RenderableProps<{ context: any }>} props
*/
function ContextProvider(props) {
this.getChildContext = () => props.context;
return props.children;
}
/**
* Portal component
* @this {import('./internal').Component}
* @param {object | null | undefined} props
*
* TODO: use createRoot() instead of fake root
*/
function Portal(props) {
const _this = this;
let container = props._container;
_this.componentWillUnmount = function() {
render(null, _this._temp);
_this._temp = null;
_this._container = null;
};
// When we change container we should clear our old container and
// indicate a new mount.
if (_this._container && _this._container !== container) {
_this.componentWillUnmount();
}
// When props.vnode is undefined/false/null we are dealing with some kind of
// conditional vnode. This should not trigger a render.
if (props._vnode) {
if (!_this._temp) {
_this._container = container;
// Create a fake DOM parent node that manages a subset of `container`'s children:
_this._temp = {
nodeType: 1,
parentNode: container,
childNodes: [],
appendChild(child) {
this.childNodes.push(child);
_this._container.appendChild(child);
},
insertBefore(child, before) {
this.childNodes.push(child);
_this._container.appendChild(child);
},
removeChild(child) {
this.childNodes.splice(this.childNodes.indexOf(child) >>> 1, 1);
_this._container.removeChild(child);
}
};
}
// Render our wrapping element into temp.
render(
createElement(ContextProvider, { context: _this.context }, props._vnode),
_this._temp
);
}
// When we come from a conditional render, on a mounted
// portal we should clear the DOM.
else if (_this._temp) {
_this.componentWillUnmount();
}
}
/**
* Create a `Portal` to continue rendering the vnode tree at a different DOM node
* @param {import('./internal').VNode} vnode The vnode to render
* @param {import('./internal').PreactElement} container The DOM node to continue rendering in to.
*/
export function createPortal(vnode, container) {
return createElement(Portal, { _vnode: vnode, _container: container });
}
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