HTML Elements

/**
 * Base class for all HTML elements
 */
class HTMLElement extends Element {
  /** Element style declarations */
  readonly style: CSSStyleDeclaration;
  
  /** Access key for keyboard navigation */
  accessKey: string;
  
  /** Auto-capitalization behavior */
  autocapitalize: string;
  
  /** Content editable flag */
  contentEditable: string;
  
  /** Text direction */
  dir: string;
  
  /** Drag and drop behavior */
  draggable: boolean;
  
  /** Element hidden state */
  hidden: boolean;
  
  /** Inner text content */
  innerText: string;
  
  /** Language code */
  lang: string;
  
  /** Spell check flag */
  spellcheck: boolean;
  
  /** Tab index for keyboard navigation */
  tabIndex: number;
  
  /** Element title (tooltip) */
  title: string;
  
  /** Translation behavior */
  translate: boolean;
  
  /** Focus element */
  focus(): void;
  
  /** Blur element */
  blur(): void;
  
  /** Click element */
  click(): void;
  
  /** Scroll element into view */
  scrollIntoView(options?: ScrollIntoViewOptions): void;
  
  // Event handler properties
  onclick: ((event: MouseEvent) => void) | null;
  ondblclick: ((event: MouseEvent) => void) | null;
  onmousedown: ((event: MouseEvent) => void) | null;
  onmouseup: ((event: MouseEvent) => void) | null;
  onmouseover: ((event: MouseEvent) => void) | null;
  onmouseout: ((event: MouseEvent) => void) | null;
  onmousemove: ((event: MouseEvent) => void) | null;
  onkeydown: ((event: KeyboardEvent) => void) | null;
  onkeyup: ((event: KeyboardEvent) => void) | null;
  onkeypress: ((event: KeyboardEvent) => void) | null;
  onfocus: ((event: FocusEvent) => void) | null;
  onblur: ((event: FocusEvent) => void) | null;
  onchange: ((event: Event) => void) | null;
  oninput: ((event: InputEvent) => void) | null;
  onsubmit: ((event: SubmitEvent) => void) | null;
  onload: ((event: Event) => void) | null;
  onerror: ((event: ErrorEvent) => void) | null;
}

interface ScrollIntoViewOptions {
  behavior?: 'auto' | 'smooth';
  block?: 'start' | 'center' | 'end' | 'nearest';
  inline?: 'start' | 'center' | 'end' | 'nearest';
}

/**
 * Form element for collecting user input
 */
class HTMLFormElement extends HTMLElement {
  /** Form action URL */
  action: string;
  
  /** Form encoding type */
  enctype: string;
  
  /** Form method (GET/POST) */
  method: string;
  
  /** Form name */
  name: string;
  
  /** No validation flag */
  noValidate: boolean;
  
  /** Form target */
  target: string;
  
  /** Form controls collection */
  readonly elements: HTMLFormControlsCollection;
  
  /** Form length (number of controls) */
  readonly length: number;
  
  /** Submit form */
  submit(): void;
  
  /** Reset form */
  reset(): void;
  
  /** Check form validity */
  checkValidity(): boolean;
  
  /** Report form validity */
  reportValidity(): boolean;
  
  /** Request submit (with validation) */
  requestSubmit(submitter?: HTMLElement): void;
}

/**
 * Collection of form controls
 */
class HTMLFormControlsCollection extends HTMLCollection {
  /** Get named item by name or id */
  namedItem(name: string): Element | null;
}

/**
 * Input element for various types of user input
 */
class HTMLInputElement extends HTMLElement {
  /** Input type */
  type: string;
  
  /** Input value */
  value: string;
  
  /** Input name */
  name: string;
  
  /** Input placeholder text */
  placeholder: string;
  
  /** Required field flag */
  required: boolean;
  
  /** Disabled state */
  disabled: boolean;
  
  /** Read-only state */
  readOnly: boolean;
  
  /** Auto-complete behavior */
  autocomplete: string;
  
  /** Auto-focus flag */
  autofocus: boolean;
  
  /** Checked state (for radio/checkbox) */
  checked: boolean;
  
  /** Default checked state */
  defaultChecked: boolean;
  
  /** Default value */
  defaultValue: string;
  
  /** Files list (for file inputs) */
  readonly files: FileList | null;
  
  /** Form owner */
  readonly form: HTMLFormElement | null;
  
  /** Validity state */
  readonly validity: ValidityState;
  
  /** Validation message */
  readonly validationMessage: string;
  
  /** Will validate flag */
  readonly willValidate: boolean;
  
  /** Maximum length */
  maxLength: number;
  
  /** Minimum length */
  minLength: number;
  
  /** Pattern for validation */
  pattern: string;
  
  /** Size attribute */
  size: number;
  
  /** Step for numeric inputs */
  step: string;
  
  /** Minimum value */
  min: string;
  
  /** Maximum value */
  max: string;
  
  /** Multiple selection flag */
  multiple: boolean;
  
  /** Accept attribute (for file inputs) */
  accept: string;
  
  /** Select input text */
  select(): void;
  
  /** Set selection range */
  setSelectionRange(start: number, end: number, direction?: string): void;
  
  /** Set custom validity */
  setCustomValidity(message: string): void;
  
  /** Check validity */
  checkValidity(): boolean;
  
  /** Report validity */
  reportValidity(): boolean;
  
  /** Step up value */
  stepUp(n?: number): void;
  
  /** Step down value */
  stepDown(n?: number): void;
}

/**
 * File list for file inputs
 */
class FileList {
  /** Number of files */
  readonly length: number;
  
  /** Get file by index */
  item(index: number): File | null;
  
  /** Array-like access */
  [index: number]: File;
}

/**
 * Multi-line text input element
 */
class HTMLTextAreaElement extends HTMLElement {
  /** Text content value */
  value: string;
  
  /** Element name */
  name: string;
  
  /** Placeholder text */
  placeholder: string;
  
  /** Required field flag */
  required: boolean;
  
  /** Disabled state */
  disabled: boolean;
  
  /** Read-only state */
  readOnly: boolean;
  
  /** Auto-focus flag */
  autofocus: boolean;
  
  /** Number of columns */
  cols: number;
  
  /** Number of rows */
  rows: number;
  
  /** Text wrapping behavior */
  wrap: string;
  
  /** Maximum length */
  maxLength: number;
  
  /** Minimum length */
  minLength: number;
  
  /** Form owner */
  readonly form: HTMLFormElement | null;
  
  /** Text length */
  readonly textLength: number;
  
  /** Selection start */
  selectionStart: number;
  
  /** Selection end */
  selectionEnd: number;
  
  /** Selection direction */
  selectionDirection: string;
  
  /** Select all text */
  select(): void;
  
  /** Set selection range */
  setSelectionRange(start: number, end: number, direction?: string): void;
  
  /** Set range text */
  setRangeText(replacement: string, start?: number, end?: number, selectionMode?: string): void;
}

/**
 * Selection dropdown element
 */
class HTMLSelectElement extends HTMLElement {
  /** Element name */
  name: string;
  
  /** Multiple selection flag */
  multiple: boolean;
  
  /** Required field flag */
  required: boolean;
  
  /** Disabled state */
  disabled: boolean;
  
  /** Auto-focus flag */
  autofocus: boolean;
  
  /** Size (visible options) */
  size: number;
  
  /** Form owner */
  readonly form: HTMLFormElement | null;
  
  /** Options collection */
  readonly options: HTMLOptionsCollection;
  
  /** Selected index */
  selectedIndex: number;
  
  /** Selected options */
  readonly selectedOptions: HTMLCollection;
  
  /** Current value */
  value: string;
  
  /** Number of options */
  readonly length: number;
  
  /** Add option */
  add(element: HTMLOptionElement, before?: HTMLElement | number): void;
  
  /** Remove option */
  remove(index: number): void;
  
  /** Check validity */
  checkValidity(): boolean;
}

/**
 * Option element for select controls
 */
class HTMLOptionElement extends HTMLElement {
  /** Option value */
  value: string;
  
  /** Option text */
  text: string;
  
  /** Option label */
  label: string;
  
  /** Selected state */
  selected: boolean;
  
  /** Default selected state */
  defaultSelected: boolean;
  
  /** Disabled state */
  disabled: boolean;
  
  /** Form owner */
  readonly form: HTMLFormElement | null;
  
  /** Option index */
  readonly index: number;
}

/**
 * Button element for user interaction
 */
class HTMLButtonElement extends HTMLElement {
  /** Button type */
  type: string;
  
  /** Button name */
  name: string;
  
  /** Button value */
  value: string;
  
  /** Disabled state */
  disabled: boolean;
  
  /** Auto-focus flag */
  autofocus: boolean;
  
  /** Form owner */
  readonly form: HTMLFormElement | null;
  
  /** Form action URL */
  formAction: string;
  
  /** Form encoding type */
  formEnctype: string;
  
  /** Form method */
  formMethod: string;
  
  /** Form no-validate flag */
  formNoValidate: boolean;
  
  /** Form target */
  formTarget: string;
}

/**
 * Base class for audio and video elements
 */
class HTMLMediaElement extends HTMLElement {
  /** Media source URL */
  src: string;
  
  /** Current time position */
  currentTime: number;
  
  /** Media duration */
  readonly duration: number;
  
  /** Playback ended flag */
  readonly ended: boolean;
  
  /** Media error */
  readonly error: MediaError | null;
  
  /** Network state */
  readonly networkState: number;
  
  /** Paused state */
  readonly paused: boolean;
  
  /** Ready state */
  readonly readyState: number;
  
  /** Seeking state */
  readonly seeking: boolean;
  
  /** Auto-play flag */
  autoplay: boolean;
  
  /** Controls visible flag */
  controls: boolean;
  
  /** Loop playback flag */
  loop: boolean;
  
  /** Muted state */
  muted: boolean;
  
  /** Playback rate */
  playbackRate: number;
  
  /** Preload behavior */
  preload: string;
  
  /** Volume level (0-1) */
  volume: number;
  
  /** Play media */
  play(): Promise<void>;
  
  /** Pause media */
  pause(): void;
  
  /** Load media */
  load(): void;
  
  /** Can play type check */
  canPlayType(type: string): string;
}

/**
 * Video element for video playback
 */
class HTMLVideoElement extends HTMLMediaElement {
  /** Video width */
  width: number;
  
  /** Video height */
  height: number;
  
  /** Poster image URL */
  poster: string;
  
  /** Video width (intrinsic) */
  readonly videoWidth: number;
  
  /** Video height (intrinsic) */
  readonly videoHeight: number;
}

/**
 * Audio element for audio playback
 */
class HTMLAudioElement extends HTMLMediaElement {
  // Inherits all HTMLMediaElement properties and methods
}

/**
 * Anchor element for links and navigation
 */
class HTMLAnchorElement extends HTMLElement {
  /** Link URL */
  href: string;
  
  /** Link target */
  target: string;
  
  /** Link relationship */
  rel: string;
  
  /** Download filename */
  download: string;
  
  /** URL hash */
  hash: string;
  
  /** URL host */
  host: string;
  
  /** URL hostname */
  hostname: string;
  
  /** URL pathname */
  pathname: string;
  
  /** URL port */
  port: string;
  
  /** URL protocol */
  protocol: string;
  
  /** URL search parameters */
  search: string;
  
  /** Link text */
  text: string;
}

/**
 * Link element for external resources
 */
class HTMLLinkElement extends HTMLElement {
  /** Resource URL */
  href: string;
  
  /** Link relationship */
  rel: string;
  
  /** Media query */
  media: string;
  
  /** MIME type */
  type: string;
  
  /** Resource sizes */
  sizes: string;
  
  /** Cross-origin behavior */
  crossOrigin: string | null;
  
  /** Resource integrity */
  integrity: string;
  
  /** Referrer policy */
  referrerPolicy: string;
  
  /** Style sheet (if rel=stylesheet) */
  readonly sheet: CSSStyleSheet | null;
}

/**
 * Image element for displaying images
 */
class HTMLImageElement extends HTMLElement {
  /** Image source URL */
  src: string;
  
  /** Alternative text */
  alt: string;
  
  /** Image width */
  width: number;
  
  /** Image height */
  height: number;
  
  /** Cross-origin behavior */
  crossOrigin: string | null;
  
  /** Loading behavior */
  loading: string;
  
  /** Sizes attribute */
  sizes: string;
  
  /** Source set */
  srcset: string;
  
  /** Use map reference */
  useMap: string;
  
  /** Natural width */
  readonly naturalWidth: number;
  
  /** Natural height */
  readonly naturalHeight: number;
  
  /** Complete loading flag */
  readonly complete: boolean;
  
  /** Decode image */
  decode(): Promise<void>;
}

/**
 * Image constructor function
 */
class Image extends HTMLImageElement {
  constructor(width?: number, height?: number);
}

/**
 * Canvas element for graphics rendering
 */
class HTMLCanvasElement extends HTMLElement {
  /** Canvas width */
  width: number;
  
  /** Canvas height */
  height: number;
  
  /** Get rendering context */
  getContext(contextId: string, options?: any): RenderingContext | null;
  
  /** Convert to data URL */
  toDataURL(type?: string, quality?: number): string;
  
  /** Convert to blob */
  toBlob(callback: (blob: Blob | null) => void, type?: string, quality?: number): void;
}

/**
 * Table element for tabular data
 */
class HTMLTableElement extends HTMLElement {
  /** Table caption */
  caption: HTMLTableCaptionElement | null;
  
  /** Table head section */
  tHead: HTMLTableSectionElement | null;
  
  /** Table foot section */
  tFoot: HTMLTableSectionElement | null;
  
  /** Table body sections */
  readonly tBodies: HTMLCollection;
  
  /** Table rows */
  readonly rows: HTMLCollection;
  
  /** Create caption */
  createCaption(): HTMLTableCaptionElement;
  
  /** Delete caption */
  deleteCaption(): void;
  
  /** Create table head */
  createTHead(): HTMLTableSectionElement;
  
  /** Delete table head */
  deleteTHead(): void;
  
  /** Create table foot */
  createTFoot(): HTMLTableSectionElement;
  
  /** Delete table foot */
  deleteTFoot(): void;
  
  /** Insert row */
  insertRow(index?: number): HTMLTableRowElement;
  
  /** Delete row */
  deleteRow(index: number): void;
}

/**
 * Table row element
 */
class HTMLTableRowElement extends HTMLElement {
  /** Row cells */
  readonly cells: HTMLCollection;
  
  /** Row index */
  readonly rowIndex: number;
  
  /** Section row index */
  readonly sectionRowIndex: number;
  
  /** Insert cell */
  insertCell(index?: number): HTMLTableCellElement;
  
  /** Delete cell */
  deleteCell(index: number): void;
}

/**
 * Table cell element (td/th)
 */
class HTMLTableCellElement extends HTMLElement {
  /** Column span */
  colSpan: number;
  
  /** Row span */
  rowSpan: number;
  
  /** Headers reference */
  headers: string;
  
  /** Scope attribute */
  scope: string;
  
  /** Abbreviated text */
  abbr: string;
  
  /** Cell index */
  readonly cellIndex: number;
}

/**
 * Generic container element
 */
class HTMLDivElement extends HTMLElement {
  // Inherits all HTMLElement properties and methods
}

/**
 * Generic inline element
 */
class HTMLSpanElement extends HTMLElement {
  // Inherits all HTMLElement properties and methods
}

/**
 * Paragraph element
 */
class HTMLParagraphElement extends HTMLElement {
  // Inherits all HTMLElement properties and methods
}

/**
 * Heading elements (h1-h6)
 */
class HTMLHeadingElement extends HTMLElement {
  // Inherits all HTMLElement properties and methods
}

import { Window } from "happy-dom";

const window = new Window();
const document = window.document;

// Create form
const form = document.createElement('form');
form.action = '/submit';
form.method = 'POST';

// Create input
const input = document.createElement('input');
input.type = 'text';
input.name = 'username';
input.required = true;

// Create button
const button = document.createElement('button');
button.type = 'submit';
button.textContent = 'Submit';

// Assemble form
form.appendChild(input);
form.appendChild(button);
document.body.appendChild(form);

// Handle events
form.addEventListener('submit', (event) => {
  event.preventDefault();
  console.log('Form submitted with:', input.value);
});

import { Window } from "happy-dom";

const window = new Window();
const document = window.document;

// Create video element
const video = document.createElement('video');
video.src = 'video.mp4';
video.controls = true;
video.autoplay = false;

// Handle events
video.addEventListener('loadeddata', () => {
  console.log('Video loaded:', video.duration);
});

video.addEventListener('play', () => {
  console.log('Video started playing');
});

// Control playback
await video.play();
video.pause();