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import { Text } from './CharacterData'
import { TreeWalker } from './TreeWalker'
import * as _ from './utils'
export class Document extends Node {
createElement(name: string) {
const internals = _.internalsOf<DocumentInternals>(
this,
'Document',
'createElement'
)
const customElementInternals: CustomElementRegistryInternals =
_.INTERNALS.get(internals.target.customElements)
name = String(name).toLowerCase()
const TypeOfHTMLElement =
internals.constructorByName.get(name) ||
(customElementInternals &&
customElementInternals.constructorByName.get(name)) ||
HTMLUnknownElement
const element = Object.setPrototypeOf(
new EventTarget(),
TypeOfHTMLElement.prototype
) as HTMLElement
_.INTERNALS.set(element, {
attributes: {},
localName: name,
ownerDocument: this,
shadowInit: null as unknown as ShadowRootInit,
shadowRoot: null as unknown as ShadowRoot,
} as ElementInternals)
return element
}
createNodeIterator(
root: Node,
whatToShow: number = NodeFilter.SHOW_ALL,
filter?: NodeIteratorInternals['filter']
) {
const target = Object.create(NodeIterator.prototype)
_.INTERNALS.set(target, {
filter,
pointerBeforeReferenceNode: false,
referenceNode: root,
root,
whatToShow,
} as NodeIteratorInternals)
return target
}
createTextNode(data: string) {
return new Text(data)
}
createTreeWalker(
root: Node,
whatToShow: number = NodeFilter.SHOW_ALL,
filter?: NodeFilter,
expandEntityReferences?: boolean
) {
const target = Object.create(TreeWalker.prototype)
_.INTERNALS.set(target, {
filter,
currentNode: root,
root,
whatToShow,
} as TreeWalkerInternals)
return target
}
get adoptedStyleSheets(): StyleSheet[] {
return []
}
get styleSheets(): StyleSheet[] {
return []
}
body!: HTMLBodyElement
documentElement!: HTMLHtmlElement
head!: HTMLHeadElement
}
export class HTMLDocument extends Document {}
_.allowStringTag(Document)
_.allowStringTag(HTMLDocument)
export const initDocument = (target: Target, exclude: Set<string>) => {
if (exclude.has('document')) return
const EventTarget = target.EventTarget || globalThis.EventTarget
const HTMLDocument = target.HTMLDocument || globalThis.HTMLDocument
const document: HTMLDocument = (target.document = Object.setPrototypeOf(
new EventTarget(),
HTMLDocument.prototype
))
_.INTERNALS.set(document, {
target,
constructorByName: new Map<string, Function>([
['body', target.HTMLBodyElement],
['canvas', target.HTMLCanvasElement],
['div', target.HTMLDivElement],
['head', target.HTMLHeadElement],
['html', target.HTMLHtmlElement],
['img', target.HTMLImageElement],
['span', target.HTMLSpanElement],
['style', target.HTMLStyleElement],
]),
nameByConstructor: new Map(),
} as DocumentInternals)
const initElement = (name: string, Class: Function) => {
const target = Object.setPrototypeOf(new EventTarget(), Class.prototype)
_.INTERNALS.set(target, {
attributes: {},
localName: name,
ownerDocument: document,
shadowRoot: null as unknown as ShadowRoot,
shadowInit: null as unknown as ShadowRootInit,
} as ElementInternals)
return target
}
document.body = initElement('body', target.HTMLBodyElement) as HTMLBodyElement
document.head = initElement('head', target.HTMLHeadElement) as HTMLHeadElement
document.documentElement = initElement(
'html',
target.HTMLHtmlElement
) as HTMLHtmlElement
}
interface DocumentInternals {
body: HTMLBodyElement
documentElement: HTMLHtmlElement
head: HTMLHeadElement
constructorByName: Map<string, Function>
nameByConstructor: Map<Function, string>
target: Target
}
interface CustomElementRegistryInternals {
constructorByName: Map<string, Function>
nameByConstructor: Map<Function, string>
}
interface ElementInternals {
attributes: { [name: string]: string }
localName: string
ownerDocument: Document
shadowRoot: ShadowRoot
shadowInit: ShadowRootInit
}
interface ShadowRootInit extends Record<any, any> {
mode?: string
}
interface Target extends Record<any, any> {
HTMLBodyElement: typeof HTMLBodyElement
HTMLDivElement: typeof HTMLDivElement
HTMLElement: typeof HTMLElement
HTMLHeadElement: typeof HTMLHeadElement
HTMLHtmlElement: typeof HTMLHtmlElement
HTMLSpanElement: typeof HTMLSpanElement
HTMLStyleElement: typeof HTMLStyleElement
customElements: CustomElementRegistry
document: DocumentInternals
}
interface NodeIteratorInternals {
filter: NodeFilter
pointerBeforeReferenceNode: boolean
referenceNode: Node
root: Node
whatToShow: number
}
interface TreeWalkerInternals {
filter: NodeFilter
currentNode: Node
root: Node
whatToShow: number
}
|
