interface HTMLCollection {
  readonly attribute unsigned long length;
  caller getter Element? item(in unsigned long index);
  caller getter object? namedItem(in DOMString name); // only returns Element
};

interface HTMLAllCollection : HTMLCollection {
  // inherits length and item()
  caller getter object? namedItem(in DOMString name); // overrides inherited namedItem()
  HTMLAllCollection tags(in DOMString tagName);
};

interface HTMLFormControlsCollection : HTMLCollection {
  // inherits length and item()
  caller getter object? namedItem(in DOMString name); // overrides inherited namedItem()
};

interface RadioNodeList : NodeList {
          attribute DOMString value;
};

interface HTMLOptionsCollection : HTMLCollection {
  // inherits item()
           attribute unsigned long length; // overrides inherited length
  caller getter object? namedItem(in DOMString name); // overrides inherited namedItem()
  void add(in HTMLElement element, in optional HTMLElement? before);
  void add(in HTMLElement element, in long before);
  void remove(in long index);
           attribute long selectedIndex;
};

interface HTMLPropertiesCollection : HTMLCollection {
  // inherits length and item()
  caller getter PropertyNodeList? namedItem(in DOMString name); // overrides inherited namedItem()
  readonly attribute DOMStringList names;
};

typedef sequence<any> PropertyValueArray;

interface PropertyNodeList : NodeList {
  PropertyValueArray getValues();
};

interface DOMTokenList {
  readonly attribute unsigned long length;
  getter DOMString? item(in unsigned long index);
  boolean contains(in DOMString token);
  void add(in DOMString token);
  void remove(in DOMString token);
  boolean toggle(in DOMString token);
  stringifier DOMString ();
};

interface DOMSettableTokenList : DOMTokenList {
            attribute DOMString value;
};

[NoInterfaceObject]
interface Transferable { };

interface DOMStringMap {
  getter DOMString (in DOMString name);
  setter void (in DOMString name, in DOMString value);
  creator void (in DOMString name, in DOMString value);
  deleter void (in DOMString name);
};

interface DOMElementMap {
  getter DOMString (in DOMString name);
  setter void (in DOMString name, in Element value);
  creator void (in DOMString name, in Element value);
  deleter void (in DOMString name);
};

[Supplemental] exception DOMException {
  const unsigned short URL_MISMATCH_ERR = 21;
  const unsigned short QUOTA_EXCEEDED_ERR = 22;
  const unsigned short DATA_CLONE_ERR = 25;
};

[OverrideBuiltins]
interface HTMLDocument {
  // resource metadata management
  [PutForwards=href] readonly attribute Location? location;
  readonly attribute DOMString URL;
           attribute DOMString domain;
  readonly attribute DOMString referrer;
           attribute DOMString cookie;
  readonly attribute DOMString lastModified;
  readonly attribute DOMString compatMode;
           attribute DOMString charset;
  readonly attribute DOMString characterSet;
  readonly attribute DOMString defaultCharset;
  readonly attribute DOMString readyState;

  // DOM tree accessors
  getter any (in DOMString name);
           attribute DOMString title;
           attribute DOMString dir;
           attribute HTMLElement? body;
  readonly attribute HTMLHeadElement? head;
  readonly attribute HTMLCollection images;
  readonly attribute HTMLCollection embeds;
  readonly attribute HTMLCollection plugins;
  readonly attribute HTMLCollection links;
  readonly attribute HTMLCollection forms;
  readonly attribute HTMLCollection scripts;
  NodeList getElementsByName(in DOMString elementName);
  NodeList getElementsByClassName(in DOMString classNames);
  NodeList getItems(in optional DOMString typeNames); // microdata
  readonly attribute DOMElementMap cssElementMap;

  // dynamic markup insertion
           attribute DOMString innerHTML;
  HTMLDocument open(in optional DOMString type, in optional DOMString replace);
  WindowProxy open(in DOMString url, in DOMString name, in DOMString features, in optional boolean replace);
  void close();
  void write(in DOMString... text);
  void writeln(in DOMString... text);

  // user interaction
  readonly attribute WindowProxy? defaultView;
  readonly attribute Element? activeElement;
  boolean hasFocus();
           attribute DOMString designMode;
  boolean execCommand(in DOMString commandId);
  boolean execCommand(in DOMString commandId, in boolean showUI);
  boolean execCommand(in DOMString commandId, in boolean showUI, in DOMString value);
  boolean queryCommandEnabled(in DOMString commandId);
  boolean queryCommandIndeterm(in DOMString commandId);
  boolean queryCommandState(in DOMString commandId);
  boolean queryCommandSupported(in DOMString commandId);
  DOMString queryCommandValue(in DOMString commandId);
  readonly attribute HTMLCollection commands;

  // event handler IDL attributes
           attribute Function? onabort;
           attribute Function? onblur;
           attribute Function? oncanplay;
           attribute Function? oncanplaythrough;
           attribute Function? onchange;
           attribute Function? onclick;
           attribute Function? oncontextmenu;
           attribute Function? oncuechange;
           attribute Function? ondblclick;
           attribute Function? ondrag;
           attribute Function? ondragend;
           attribute Function? ondragenter;
           attribute Function? ondragleave;
           attribute Function? ondragover;
           attribute Function? ondragstart;
           attribute Function? ondrop;
           attribute Function? ondurationchange;
           attribute Function? onemptied;
           attribute Function? onended;
           attribute Function? onerror;
           attribute Function? onfocus;
           attribute Function? oninput;
           attribute Function? oninvalid;
           attribute Function? onkeydown;
           attribute Function? onkeypress;
           attribute Function? onkeyup;
           attribute Function? onload;
           attribute Function? onloadeddata;
           attribute Function? onloadedmetadata;
           attribute Function? onloadstart;
           attribute Function? onmousedown;
           attribute Function? onmousemove;
           attribute Function? onmouseout;
           attribute Function? onmouseover;
           attribute Function? onmouseup;
           attribute Function? onmousewheel;
           attribute Function? onpause;
           attribute Function? onplay;
           attribute Function? onplaying;
           attribute Function? onprogress;
           attribute Function? onratechange;
           attribute Function? onreadystatechange;
           attribute Function? onreset;
           attribute Function? onscroll;
           attribute Function? onseeked;
           attribute Function? onseeking;
           attribute Function? onselect;
           attribute Function? onshow;
           attribute Function? onstalled;
           attribute Function? onsubmit;
           attribute Function? onsuspend;
           attribute Function? ontimeupdate;
           attribute Function? onvolumechange;
           attribute Function? onwaiting;
};
Document implements HTMLDocument;

[Supplemental, NoInterfaceObject]
interface DOMHTMLImplementation {
  Document createHTMLDocument(in DOMString title);
};
DOMImplementation implements DOMHTMLImplementation;

[Supplemental, NoInterfaceObject]
interface XMLDocumentLoader {
  boolean load(in DOMString url);
};

interface HTMLElement : Element {
  // DOM tree accessors
  NodeList getElementsByClassName(in DOMString classNames);

  // dynamic markup insertion
           attribute DOMString innerHTML;
           attribute DOMString outerHTML;
  void insertAdjacentHTML(in DOMString position, in DOMString text);

  // metadata attributes
           attribute DOMString id;
           attribute DOMString title;
           attribute DOMString lang;
           attribute DOMString dir;
           attribute DOMString className;
  readonly attribute DOMTokenList classList;
  readonly attribute DOMStringMap dataset;

  // microdata
           attribute boolean itemScope;
           attribute DOMString itemType;
           attribute DOMString itemId;
  [PutForwards=value] readonly attribute DOMSettableTokenList itemRef;
  [PutForwards=value] readonly attribute DOMSettableTokenList itemProp;
  readonly attribute HTMLPropertiesCollection properties;
           attribute any itemValue;

  // user interaction
           attribute boolean hidden;
  void click();
           attribute long tabIndex;
  void focus();
  void blur();
           attribute DOMString accessKey;
  readonly attribute DOMString accessKeyLabel;
           attribute boolean draggable;
  [PutForwards=value] readonly attribute DOMSettableTokenList dropzone;
           attribute DOMString contentEditable;
  readonly attribute boolean isContentEditable;
           attribute HTMLMenuElement? contextMenu;
           attribute boolean spellcheck;

  // command API
  readonly attribute DOMString? commandType;
  readonly attribute DOMString? commandLabel;
  readonly attribute DOMString? commandIcon;
  readonly attribute boolean? commandHidden;
  readonly attribute boolean? commandDisabled;
  readonly attribute boolean? commandChecked;

  // styling
  readonly attribute CSSStyleDeclaration style;

  // event handler IDL attributes
           attribute Function? onabort;
           attribute Function? onblur;
           attribute Function? oncanplay;
           attribute Function? oncanplaythrough;
           attribute Function? onchange;
           attribute Function? onclick;
           attribute Function? oncontextmenu;
           attribute Function? oncuechange;
           attribute Function? ondblclick;
           attribute Function? ondrag;
           attribute Function? ondragend;
           attribute Function? ondragenter;
           attribute Function? ondragleave;
           attribute Function? ondragover;
           attribute Function? ondragstart;
           attribute Function? ondrop;
           attribute Function? ondurationchange;
           attribute Function? onemptied;
           attribute Function? onended;
           attribute Function? onerror;
           attribute Function? onfocus;
           attribute Function? oninput;
           attribute Function? oninvalid;
           attribute Function? onkeydown;
           attribute Function? onkeypress;
           attribute Function? onkeyup;
           attribute Function? onload;
           attribute Function? onloadeddata;
           attribute Function? onloadedmetadata;
           attribute Function? onloadstart;
           attribute Function? onmousedown;
           attribute Function? onmousemove;
           attribute Function? onmouseout;
           attribute Function? onmouseover;
           attribute Function? onmouseup;
           attribute Function? onmousewheel;
           attribute Function? onpause;
           attribute Function? onplay;
           attribute Function? onplaying;
           attribute Function? onprogress;
           attribute Function? onratechange;
           attribute Function? onreadystatechange;
           attribute Function? onreset;
           attribute Function? onscroll;
           attribute Function? onseeked;
           attribute Function? onseeking;
           attribute Function? onselect;
           attribute Function? onshow;
           attribute Function? onstalled;
           attribute Function? onsubmit;
           attribute Function? onsuspend;
           attribute Function? ontimeupdate;
           attribute Function? onvolumechange;
           attribute Function? onwaiting;
};

interface HTMLUnknownElement : HTMLElement { };

interface HTMLHtmlElement : HTMLElement {};

interface HTMLHeadElement : HTMLElement {};

interface HTMLTitleElement : HTMLElement {
           attribute DOMString text;
};

interface HTMLBaseElement : HTMLElement {
           attribute DOMString href;
           attribute DOMString target;
};

interface HTMLLinkElement : HTMLElement {
           attribute boolean disabled;
           attribute DOMString href;
           attribute DOMString rel;
  readonly attribute DOMTokenList relList;
           attribute DOMString media;
           attribute DOMString hreflang;
           attribute DOMString type;
  [PutForwards=value] readonly attribute DOMSettableTokenList sizes;
};
HTMLLinkElement implements LinkStyle;

interface HTMLMetaElement : HTMLElement {
           attribute DOMString name;
           attribute DOMString httpEquiv;
           attribute DOMString content;
};

interface HTMLStyleElement : HTMLElement {
           attribute boolean disabled;
           attribute DOMString media;
           attribute DOMString type;
           attribute boolean scoped;
};
HTMLStyleElement implements LinkStyle;

interface HTMLScriptElement : HTMLElement {
           attribute DOMString src;
           attribute boolean async;
           attribute boolean defer;
           attribute DOMString type;
           attribute DOMString charset;
           attribute DOMString text;
};

interface HTMLBodyElement : HTMLElement {
           attribute Function? onafterprint;
           attribute Function? onbeforeprint;
           attribute Function? onbeforeunload;
           attribute Function? onblur;
           attribute Function? onerror;
           attribute Function? onfocus;
           attribute Function? onhashchange;
           attribute Function? onload;
           attribute Function? onmessage;
           attribute Function? onoffline;
           attribute Function? ononline;
           attribute Function? onpopstate;
           attribute Function? onpagehide;
           attribute Function? onpageshow;
           attribute Function? onredo;
           attribute Function? onresize;
           attribute Function? onscroll;
           attribute Function? onstorage;
           attribute Function? onundo;
           attribute Function? onunload;
};

interface HTMLHeadingElement : HTMLElement {};

interface HTMLParagraphElement : HTMLElement {};

interface HTMLHRElement : HTMLElement {};

interface HTMLPreElement : HTMLElement {};

interface HTMLQuoteElement : HTMLElement {
           attribute DOMString cite;
};

interface HTMLOListElement : HTMLElement {
           attribute boolean reversed;
           attribute long start;
           attribute DOMString type;
};

interface HTMLUListElement : HTMLElement {};

interface HTMLLIElement : HTMLElement {
           attribute long value;
};

interface HTMLDListElement : HTMLElement {};

interface HTMLDivElement : HTMLElement {};

interface HTMLAnchorElement : HTMLElement {
  stringifier attribute DOMString href;
           attribute DOMString target;

           attribute DOMString ping;

           attribute DOMString rel;
  readonly attribute DOMTokenList relList;
           attribute DOMString media;
           attribute DOMString hreflang;
           attribute DOMString type;

           attribute DOMString text;

  // URL decomposition IDL attributes
           attribute DOMString protocol;
           attribute DOMString host;
           attribute DOMString hostname;
           attribute DOMString port;
           attribute DOMString pathname;
           attribute DOMString search;
           attribute DOMString hash;
};

interface HTMLTimeElement : HTMLElement {
           attribute DOMString dateTime;
           attribute boolean pubDate;
  readonly attribute Date? valueAsDate;
};

interface HTMLSpanElement : HTMLElement {};

interface HTMLBRElement : HTMLElement {};

interface HTMLModElement : HTMLElement {
           attribute DOMString cite;
           attribute DOMString dateTime;
};

[NamedConstructor=Image(),
 NamedConstructor=Image(in unsigned long width),
 NamedConstructor=Image(in unsigned long width, in unsigned long height)]
interface HTMLImageElement : HTMLElement {
           attribute DOMString alt;
           attribute DOMString src;
           attribute DOMString crossOrigin;
           attribute DOMString useMap;
           attribute boolean isMap;
           attribute unsigned long width;
           attribute unsigned long height;
  readonly attribute unsigned long naturalWidth;
  readonly attribute unsigned long naturalHeight;
  readonly attribute boolean complete;
};

interface HTMLIFrameElement : HTMLElement {
           attribute DOMString src;
           attribute DOMString srcdoc;
           attribute DOMString name;
  [PutForwards=value] readonly attribute DOMSettableTokenList sandbox;
           attribute boolean seamless;
           attribute DOMString width;
           attribute DOMString height;
  readonly attribute Document? contentDocument;
  readonly attribute WindowProxy? contentWindow;
};

interface HTMLEmbedElement : HTMLElement {
           attribute DOMString src;
           attribute DOMString type;
           attribute DOMString width;
           attribute DOMString height;
};

interface HTMLObjectElement : HTMLElement {
           attribute DOMString data;
           attribute DOMString type;
           attribute boolean typeMustMatch;
           attribute DOMString name;
           attribute DOMString useMap;
  readonly attribute HTMLFormElement? form;
           attribute DOMString width;
           attribute DOMString height;
  readonly attribute Document? contentDocument;
  readonly attribute WindowProxy? contentWindow;

  readonly attribute boolean willValidate;
  readonly attribute ValidityState validity;
  readonly attribute DOMString validationMessage;
  boolean checkValidity();
  void setCustomValidity(in DOMString error);
};

interface HTMLParamElement : HTMLElement {
           attribute DOMString name;
           attribute DOMString value;
};

interface HTMLVideoElement : HTMLMediaElement {
           attribute unsigned long width;
           attribute unsigned long height;
  readonly attribute unsigned long videoWidth;
  readonly attribute unsigned long videoHeight;
           attribute DOMString poster;
};

[NamedConstructor=Audio(),
 NamedConstructor=Audio(in DOMString src)]
interface HTMLAudioElement : HTMLMediaElement {};

interface HTMLSourceElement : HTMLElement {
           attribute DOMString src;
           attribute DOMString type;
           attribute DOMString media;
};

interface HTMLTrackElement : HTMLElement {
           attribute DOMString kind;
           attribute DOMString src;
           attribute DOMString srclang;
           attribute DOMString label;
           attribute boolean default;

  readonly attribute TextTrack track;
};

interface HTMLMediaElement : HTMLElement {

  // error state
  readonly attribute MediaError? error;

  // network state
           attribute DOMString src;
  readonly attribute DOMString currentSrc;
           attribute DOMString crossOrigin;
  const unsigned short NETWORK_EMPTY = 0;
  const unsigned short NETWORK_IDLE = 1;
  const unsigned short NETWORK_LOADING = 2;
  const unsigned short NETWORK_NO_SOURCE = 3;
  readonly attribute unsigned short networkState;
           attribute DOMString preload;
  readonly attribute TimeRanges buffered;
  void load();
  DOMString canPlayType(in DOMString type);

  // ready state
  const unsigned short HAVE_NOTHING = 0;
  const unsigned short HAVE_METADATA = 1;
  const unsigned short HAVE_CURRENT_DATA = 2;
  const unsigned short HAVE_FUTURE_DATA = 3;
  const unsigned short HAVE_ENOUGH_DATA = 4;
  readonly attribute unsigned short readyState;
  readonly attribute boolean seeking;

  // playback state
           attribute double currentTime;
  readonly attribute double initialTime;
  readonly attribute double duration;
  readonly attribute Date startOffsetTime;
  readonly attribute boolean paused;
           attribute double defaultPlaybackRate;
           attribute double playbackRate;
  readonly attribute TimeRanges played;
  readonly attribute TimeRanges seekable;
  readonly attribute boolean ended;
           attribute boolean autoplay;
           attribute boolean loop;
  void play();
  void pause();

  // media controller
           attribute DOMString mediaGroup;
           attribute MediaController? controller;

  // controls
           attribute boolean controls;
           attribute double volume;
           attribute boolean muted;
           attribute boolean defaultMuted;

  // tracks
  readonly attribute AudioTrackList audioTracks;
  readonly attribute VideoTrackList videoTracks;
  readonly attribute TextTrackList textTracks;
  MutableTextTrack addTextTrack(in DOMString kind, in optional DOMString label, in optional DOMString language);
};

interface MediaError {
  const unsigned short MEDIA_ERR_ABORTED = 1;
  const unsigned short MEDIA_ERR_NETWORK = 2;
  const unsigned short MEDIA_ERR_DECODE = 3;
  const unsigned short MEDIA_ERR_SRC_NOT_SUPPORTED = 4;
  readonly attribute unsigned short code;
};

interface AudioTrackList {
  readonly attribute unsigned long length;
  getter AudioTrack (in unsigned long index);
  AudioTrack? getTrackById(in DOMString id);
           attribute Function? onchange;
};

interface AudioTrack {
  readonly attribute DOMString id;
  readonly attribute DOMString kind;
  readonly attribute DOMString label;
  readonly attribute DOMString language;
           attribute boolean enabled;
};

interface VideoTrackList {
  readonly attribute unsigned long length;
  getter VideoTrack (in unsigned long index);
  VideoTrack? getTrackById(in DOMString id);
  readonly attribute long selectedIndex;
           attribute Function? onchange;
};

interface VideoTrack {
  readonly attribute DOMString id;
  readonly attribute DOMString kind;
  readonly attribute DOMString label;
  readonly attribute DOMString language;
           attribute boolean selected;
};

[Constructor]
interface MediaController {
  readonly attribute TimeRanges buffered;
  readonly attribute TimeRanges seekable;
  readonly attribute double duration;
           attribute double currentTime;

  readonly attribute boolean paused;
  readonly attribute TimeRanges played;
  void play();
  void pause();

           attribute double defaultPlaybackRate;
           attribute double playbackRate;

           attribute double volume;
           attribute boolean muted;

           attribute Function? onemptied;
           attribute Function? onloadedmetadata;
           attribute Function? onloadeddata;
           attribute Function? oncanplay;
           attribute Function? oncanplaythrough;
           attribute Function? onplaying;
           attribute Function? onended;
           attribute Function? onwaiting;

           attribute Function? ondurationchange;
           attribute Function? ontimeupdate;
           attribute Function? onplay;
           attribute Function? onpause;
           attribute Function? onratechange;
           attribute Function? onvolumechange;
};

interface TextTrack {
  readonly attribute DOMString kind;
  readonly attribute DOMString label;
  readonly attribute DOMString language;

  const unsigned short NONE = 0;
  const unsigned short LOADING = 1;
  const unsigned short LOADED = 2;
  const unsigned short ERROR = 3;
  readonly attribute unsigned short readyState;
           attribute Function? onload;
           attribute Function? onerror;

  const unsigned short OFF = 0;
  const unsigned short HIDDEN = 1;
  const unsigned short SHOWING = 2;
           attribute unsigned short mode;

  readonly attribute TextTrackCueList? cues;
  readonly attribute TextTrackCueList? activeCues;

           attribute Function? oncuechange;
};
TextTrack implements EventTarget;

typedef TextTrack[] TextTrackList;

interface MutableTextTrack : TextTrack {
 void addCue(in TextTrackCue cue);
 void removeCue(in TextTrackCue cue);
};

interface TextTrackCueList {
  readonly attribute unsigned long length;
  getter TextTrackCue (in unsigned long index);
  TextTrackCue? getCueById(in DOMString id);
};



[Constructor(in DOMString id, in double startTime, in double endTime, in DOMString text, in optional DOMString settings, in optional boolean pauseOnExit)]

interface TextTrackCue {
  readonly attribute TextTrack? track;
  readonly attribute DOMString id;

  readonly attribute double startTime;
  readonly attribute double endTime;
  readonly attribute boolean pauseOnExit;


  readonly attribute DOMString direction;
  readonly attribute boolean snapToLines;
  readonly attribute long linePosition;
  readonly attribute long textPosition;
  readonly attribute long size;
  readonly attribute DOMString alignment;


  DOMString getCueAsSource();
  DocumentFragment getCueAsHTML();

           attribute Function? onenter;
           attribute Function? onexit;
};
TextTrackCue implements EventTarget;

interface TimeRanges {
  readonly attribute unsigned long length;
  double start(in unsigned long index);
  double end(in unsigned long index);
};

interface HTMLCanvasElement : HTMLElement {
           attribute unsigned long width;
           attribute unsigned long height;

  DOMString toDataURL(in optional DOMString type, in any... args);
  void toBlob(in FileCallback? callback, in optional DOMString type, in any... args);

  object? getContext(in DOMString contextId, in any... args);
};

interface CanvasRenderingContext2D {

  // back-reference to the canvas
  readonly attribute HTMLCanvasElement canvas;

  // state
  void save(); // push state on state stack
  void restore(); // pop state stack and restore state

  // transformations (default transform is the identity matrix)
  void scale(in double x, in double y);
  void rotate(in double angle);
  void translate(in double x, in double y);
  void transform(in double a, in double b, in double c, in double d, in double e, in double f);
  void setTransform(in double a, in double b, in double c, in double d, in double e, in double f);

  // compositing
           attribute double globalAlpha; // (default 1.0)
           attribute DOMString globalCompositeOperation; // (default source-over)

  // colors and styles
           attribute any strokeStyle; // (default black)
           attribute any fillStyle; // (default black)
  CanvasGradient createLinearGradient(in double x0, in double y0, in double x1, in double y1);
  CanvasGradient createRadialGradient(in double x0, in double y0, in double r0, in double x1, in double y1, in double r1);
  CanvasPattern createPattern(in HTMLImageElement image, in DOMString repetition);
  CanvasPattern createPattern(in HTMLCanvasElement image, in DOMString repetition);
  CanvasPattern createPattern(in HTMLVideoElement image, in DOMString repetition);

  // line caps/joins
           attribute double lineWidth; // (default 1)
           attribute DOMString lineCap; // "butt", "round", "square" (default "butt")
           attribute DOMString lineJoin; // "round", "bevel", "miter" (default "miter")
           attribute double miterLimit; // (default 10)

  // shadows
           attribute double shadowOffsetX; // (default 0)
           attribute double shadowOffsetY; // (default 0)
           attribute double shadowBlur; // (default 0)
           attribute DOMString shadowColor; // (default transparent black)

  // rects
  void clearRect(in double x, in double y, in double w, in double h);
  void fillRect(in double x, in double y, in double w, in double h);
  void strokeRect(in double x, in double y, in double w, in double h);

  // path API
  void beginPath();
  void closePath();
  void moveTo(in double x, in double y);
  void lineTo(in double x, in double y);
  void quadraticCurveTo(in double cpx, in double cpy, in double x, in double y);
  void bezierCurveTo(in double cp1x, in double cp1y, in double cp2x, in double cp2y, in double x, in double y);
  void arcTo(in double x1, in double y1, in double x2, in double y2, in double radius);
  void rect(in double x, in double y, in double w, in double h);
  void arc(in double x, in double y, in double radius, in double startAngle, in double endAngle, in optional boolean anticlockwise);
  void fill();
  void stroke();
  void drawSystemFocusRing(in Element element);
  boolean drawCustomFocusRing(in Element element);
  void scrollPathIntoView();
  void clip();
  boolean isPointInPath(in double x, in double y);

  // text
           attribute DOMString font; // (default 10px sans-serif)
           attribute DOMString textAlign; // "start", "end", "left", "right", "center" (default: "start")
           attribute DOMString textBaseline; // "top", "hanging", "middle", "alphabetic", "ideographic", "bottom" (default: "alphabetic")
  void fillText(in DOMString text, in double x, in double y, in optional double maxWidth);
  void strokeText(in DOMString text, in double x, in double y, in optional double maxWidth);
  TextMetrics measureText(in DOMString text);

  // drawing images
  void drawImage(in HTMLImageElement image, in double dx, in double dy);
  void drawImage(in HTMLImageElement image, in double dx, in double dy, in double dw, in double dh);
  void drawImage(in HTMLImageElement image, in double sx, in double sy, in double sw, in double sh, in double dx, in double dy, in double dw, in double dh);
  void drawImage(in HTMLCanvasElement image, in double dx, in double dy);
  void drawImage(in HTMLCanvasElement image, in double dx, in double dy, in double dw, in double dh);
  void drawImage(in HTMLCanvasElement image, in double sx, in double sy, in double sw, in double sh, in double dx, in double dy, in double dw, in double dh);
  void drawImage(in HTMLVideoElement image, in double dx, in double dy);
  void drawImage(in HTMLVideoElement image, in double dx, in double dy, in double dw, in double dh);
  void drawImage(in HTMLVideoElement image, in double sx, in double sy, in double sw, in double sh, in double dx, in double dy, in double dw, in double dh);

  // pixel manipulation
  ImageData createImageData(in double sw, in double sh);
  ImageData createImageData(in ImageData imagedata);
  ImageData getImageData(in double sx, in double sy, in double sw, in double sh);
  void putImageData(in ImageData imagedata, in double dx, in double dy);
  void putImageData(in ImageData imagedata, in double dx, in double dy, in double dirtyX, in double dirtyY, in double dirtyWidth, in double dirtyHeight);
};

interface CanvasGradient {
  // opaque object
  void addColorStop(in double offset, in DOMString color);
};

interface CanvasPattern {
  // opaque object
};

interface TextMetrics {
  readonly attribute double width;
};

interface ImageData {
  readonly attribute unsigned long width;
  readonly attribute unsigned long height;
  readonly attribute CanvasPixelArray data;
};

interface CanvasPixelArray {
  readonly attribute unsigned long length;
  getter octet (in unsigned long index);
  setter void (in unsigned long index, in octet value);
};

interface HTMLMapElement : HTMLElement {
           attribute DOMString name;
  readonly attribute HTMLCollection areas;
  readonly attribute HTMLCollection images;
};

interface HTMLAreaElement : HTMLElement {
           attribute DOMString alt;
           attribute DOMString coords;
           attribute DOMString shape;
  stringifier attribute DOMString href;
           attribute DOMString target;

           attribute DOMString ping;

           attribute DOMString rel;
  readonly attribute DOMTokenList relList;
           attribute DOMString media;
           attribute DOMString hreflang;
           attribute DOMString type;

  // URL decomposition IDL attributes
           attribute DOMString protocol;
           attribute DOMString host;
           attribute DOMString hostname;
           attribute DOMString port;
           attribute DOMString pathname;
           attribute DOMString search;
           attribute DOMString hash;
};

interface HTMLTableElement : HTMLElement {
           attribute HTMLTableCaptionElement? caption;
  HTMLElement createCaption();
  void deleteCaption();
           attribute HTMLTableSectionElement? tHead;
  HTMLElement createTHead();
  void deleteTHead();
           attribute HTMLTableSectionElement? tFoot;
  HTMLElement createTFoot();
  void deleteTFoot();
  readonly attribute HTMLCollection tBodies;
  HTMLElement createTBody();
  readonly attribute HTMLCollection rows;
  HTMLElement insertRow(in optional long index);
  void deleteRow(in long index);
           attribute DOMString border;
};

interface HTMLTableCaptionElement : HTMLElement {};

interface HTMLTableColElement : HTMLElement {
           attribute unsigned long span;
};

interface HTMLTableSectionElement : HTMLElement {
  readonly attribute HTMLCollection rows;
  HTMLElement insertRow(in optional long index);
  void deleteRow(in long index);
};

interface HTMLTableRowElement : HTMLElement {
  readonly attribute long rowIndex;
  readonly attribute long sectionRowIndex;
  readonly attribute HTMLCollection cells;
  HTMLElement insertCell(in optional long index);
  void deleteCell(in long index);
};

interface HTMLTableDataCellElement : HTMLTableCellElement {};

interface HTMLTableHeaderCellElement : HTMLTableCellElement {
           attribute DOMString scope;
};

interface HTMLTableCellElement : HTMLElement {
           attribute unsigned long colSpan;
           attribute unsigned long rowSpan;
  [PutForwards=value] readonly attribute DOMSettableTokenList headers;
  readonly attribute long cellIndex;
};

[OverrideBuiltins]
interface HTMLFormElement : HTMLElement {
           attribute DOMString acceptCharset;
           attribute DOMString action;
           attribute DOMString autocomplete;
           attribute DOMString enctype;
           attribute DOMString encoding;
           attribute DOMString method;
           attribute DOMString name;
           attribute boolean noValidate;
           attribute DOMString target;

  readonly attribute HTMLFormControlsCollection elements;
  readonly attribute long length;
  caller getter any (in unsigned long index);
  caller getter any (in DOMString name);

  void submit();
  void reset();
  boolean checkValidity();
};

interface HTMLFieldSetElement : HTMLElement {
           attribute boolean disabled;
  readonly attribute HTMLFormElement? form;
           attribute DOMString name;

  readonly attribute DOMString type;

  readonly attribute HTMLFormControlsCollection elements;

  readonly attribute boolean willValidate;
  readonly attribute ValidityState validity;
  readonly attribute DOMString validationMessage;
  boolean checkValidity();
  void setCustomValidity(in DOMString error);
};

interface HTMLLegendElement : HTMLElement {
  readonly attribute HTMLFormElement? form;
};

interface HTMLLabelElement : HTMLElement {
  readonly attribute HTMLFormElement? form;
           attribute DOMString htmlFor;
  readonly attribute HTMLElement? control;
};

interface HTMLInputElement : HTMLElement {
           attribute DOMString accept;
           attribute DOMString alt;
           attribute DOMString autocomplete;
           attribute boolean autofocus;
           attribute boolean defaultChecked;
           attribute boolean checked;
           attribute DOMString dirName;
           attribute boolean disabled;
  readonly attribute HTMLFormElement? form;
  readonly attribute FileList? files;
           attribute DOMString formAction;
           attribute DOMString formEnctype;
           attribute DOMString formMethod;
           attribute boolean formNoValidate;
           attribute DOMString formTarget;
           attribute DOMString height;
           attribute boolean indeterminate;
  readonly attribute HTMLElement? list;
           attribute DOMString max;
           attribute long maxLength;
           attribute DOMString min;
           attribute boolean multiple;
           attribute DOMString name;
           attribute DOMString pattern;
           attribute DOMString placeholder;
           attribute boolean readOnly;
           attribute boolean required;
           attribute unsigned long size;
           attribute DOMString src;
           attribute DOMString step;
           attribute DOMString type;
           attribute DOMString defaultValue;
           attribute DOMString value;
           attribute Date valueAsDate;
           attribute double valueAsNumber;
  readonly attribute HTMLOptionElement? selectedOption;
           attribute DOMString width;

  void stepUp(in optional long n);
  void stepDown(in optional long n);

  readonly attribute boolean willValidate;
  readonly attribute ValidityState validity;
  readonly attribute DOMString validationMessage;
  boolean checkValidity();
  void setCustomValidity(in DOMString error);

  readonly attribute NodeList labels;

  void select();
           attribute unsigned long selectionStart;
           attribute unsigned long selectionEnd;
           attribute DOMString selectionDirection;
  void setSelectionRange(in unsigned long start, in unsigned long end, in optional DOMString direction);
};

interface HTMLButtonElement : HTMLElement {
           attribute boolean autofocus;
           attribute boolean disabled;
  readonly attribute HTMLFormElement? form;
           attribute DOMString formAction;
           attribute DOMString formEnctype;
           attribute DOMString formMethod;
           attribute DOMString formNoValidate;
           attribute DOMString formTarget;
           attribute DOMString name;
           attribute DOMString type;
           attribute DOMString value;

  readonly attribute boolean willValidate;
  readonly attribute ValidityState validity;
  readonly attribute DOMString validationMessage;
  boolean checkValidity();
  void setCustomValidity(in DOMString error);

  readonly attribute NodeList labels;
};

interface HTMLSelectElement : HTMLElement {
           attribute boolean autofocus;
           attribute boolean disabled;
  readonly attribute HTMLFormElement? form;
           attribute boolean multiple;
           attribute DOMString name;
           attribute boolean required;
           attribute unsigned long size;

  readonly attribute DOMString type;

  readonly attribute HTMLOptionsCollection options;
           attribute unsigned long length;
  getter any item(in unsigned long index);
  any namedItem(in DOMString name);
  void add(in HTMLElement element, in optional HTMLElement? before);
  void add(in HTMLElement element, in long before);
  void remove(in long index);

  readonly attribute HTMLCollection selectedOptions;
           attribute long selectedIndex;
           attribute DOMString value;

  readonly attribute boolean willValidate;
  readonly attribute ValidityState validity;
  readonly attribute DOMString validationMessage;
  boolean checkValidity();
  void setCustomValidity(in DOMString error);

  readonly attribute NodeList labels;
};

interface HTMLDataListElement : HTMLElement {
  readonly attribute HTMLCollection options;
};

interface HTMLOptGroupElement : HTMLElement {
           attribute boolean disabled;
           attribute DOMString label;
};

[NamedConstructor=Option(),
 NamedConstructor=Option(in DOMString text),
 NamedConstructor=Option(in DOMString text, in DOMString value),
 NamedConstructor=Option(in DOMString text, in DOMString value, in boolean defaultSelected),
 NamedConstructor=Option(in DOMString text, in DOMString value, in boolean defaultSelected, in boolean selected)]
interface HTMLOptionElement : HTMLElement {
           attribute boolean disabled;
  readonly attribute HTMLFormElement? form;
           attribute DOMString label;
           attribute boolean defaultSelected;
           attribute boolean selected;
           attribute DOMString value;

           attribute DOMString text;
  readonly attribute long index;
};

interface HTMLTextAreaElement : HTMLElement {
           attribute boolean autofocus;
           attribute unsigned long cols;
           attribute DOMString dirName;
           attribute boolean disabled;
  readonly attribute HTMLFormElement? form;
           attribute long maxLength;
           attribute DOMString name;
           attribute DOMString placeholder;
           attribute boolean readOnly;
           attribute boolean required;
           attribute unsigned long rows;
           attribute DOMString wrap;

  readonly attribute DOMString type;
           attribute DOMString defaultValue;
           attribute DOMString value;
  readonly attribute unsigned long textLength;

  readonly attribute boolean willValidate;
  readonly attribute ValidityState validity;
  readonly attribute DOMString validationMessage;
  boolean checkValidity();
  void setCustomValidity(in DOMString error);

  readonly attribute NodeList labels;

  void select();
           attribute unsigned long selectionStart;
           attribute unsigned long selectionEnd;
           attribute DOMString selectionDirection;
  void setSelectionRange(in unsigned long start, in unsigned long end, in optional DOMString direction);
};

interface HTMLKeygenElement : HTMLElement {
           attribute boolean autofocus;
           attribute DOMString challenge;
           attribute boolean disabled;
  readonly attribute HTMLFormElement? form;
           attribute DOMString keytype;
           attribute DOMString name;

  readonly attribute DOMString type;

  readonly attribute boolean willValidate;
  readonly attribute ValidityState validity;
  readonly attribute DOMString validationMessage;
  boolean checkValidity();
  void setCustomValidity(in DOMString error);

  readonly attribute NodeList labels;
};

interface HTMLOutputElement : HTMLElement {
  [PutForwards=value] readonly attribute DOMSettableTokenList htmlFor;
  readonly attribute HTMLFormElement? form;
           attribute DOMString name;

  readonly attribute DOMString type;
           attribute DOMString defaultValue;
           attribute DOMString value;

  readonly attribute boolean willValidate;
  readonly attribute ValidityState validity;
  readonly attribute DOMString validationMessage;
  boolean checkValidity();
  void setCustomValidity(in DOMString error);

  readonly attribute NodeList labels;
};

interface HTMLProgressElement : HTMLElement {
           attribute double value;
           attribute double max;
  readonly attribute double position;
  readonly attribute NodeList labels;
};

interface HTMLMeterElement : HTMLElement {
           attribute double value;
           attribute double min;
           attribute double max;
           attribute double low;
           attribute double high;
           attribute double optimum;
  readonly attribute NodeList labels;
};

interface ValidityState {
  readonly attribute boolean valueMissing;
  readonly attribute boolean typeMismatch;
  readonly attribute boolean patternMismatch;
  readonly attribute boolean tooLong;
  readonly attribute boolean rangeUnderflow;
  readonly attribute boolean rangeOverflow;
  readonly attribute boolean stepMismatch;
  readonly attribute boolean customError;
  readonly attribute boolean valid;
};

interface HTMLDetailsElement : HTMLElement {
           attribute boolean open;
};

interface HTMLCommandElement : HTMLElement {
           attribute DOMString type;
           attribute DOMString label;
           attribute DOMString icon;
           attribute boolean disabled;
           attribute boolean checked;
           attribute DOMString radiogroup;
};

interface HTMLMenuElement : HTMLElement {
           attribute DOMString type;
           attribute DOMString label;
};

[ReplaceableNamedProperties]
interface Window {
  // the current browsing context
  readonly attribute WindowProxy window;
  readonly attribute WindowProxy self;
  readonly attribute Document document;
           attribute DOMString name;
  [PutForwards=href] readonly attribute Location location;
  readonly attribute History history;

  readonly attribute UndoManager undoManager;

  [Replaceable] readonly attribute BarProp locationbar;
  [Replaceable] readonly attribute BarProp menubar;
  [Replaceable] readonly attribute BarProp personalbar;
  [Replaceable] readonly attribute BarProp scrollbars;
  [Replaceable] readonly attribute BarProp statusbar;
  [Replaceable] readonly attribute BarProp toolbar;
           attribute DOMString status;
  void close();
  void stop();
  void focus();
  void blur();

  // other browsing contexts
  [Replaceable] readonly attribute WindowProxy frames;
  [Replaceable] readonly attribute unsigned long length;
  readonly attribute WindowProxy top;
           attribute WindowProxy opener;
  readonly attribute WindowProxy parent;
  readonly attribute Element? frameElement;
  WindowProxy open(in optional DOMString url, in optional DOMString target, in optional DOMString features, in optional DOMString replace);
  getter WindowProxy (in unsigned long index);
  getter any (in DOMString name);

  // the user agent
  readonly attribute Navigator navigator;
  readonly attribute External external;
  readonly attribute ApplicationCache applicationCache;

  // user prompts
  void alert(in DOMString message);
  boolean confirm(in DOMString message);
  DOMString? prompt(in DOMString message, in optional DOMString default);
  void print();
  any showModalDialog(in DOMString url, in optional any argument);

  // cross-document messaging
  void postMessage(in any message, in DOMString targetOrigin, in optional sequence<Transferable> transfer);

  // event handler IDL attributes
           attribute Function? onabort;
           attribute Function? onafterprint;
           attribute Function? onbeforeprint;
           attribute Function? onbeforeunload;
           attribute Function? onblur;
           attribute Function? oncanplay;
           attribute Function? oncanplaythrough;
           attribute Function? onchange;
           attribute Function? onclick;
           attribute Function? oncontextmenu;
           attribute Function? oncuechange;
           attribute Function? ondblclick;
           attribute Function? ondrag;
           attribute Function? ondragend;
           attribute Function? ondragenter;
           attribute Function? ondragleave;
           attribute Function? ondragover;
           attribute Function? ondragstart;
           attribute Function? ondrop;
           attribute Function? ondurationchange;
           attribute Function? onemptied;
           attribute Function? onended;
           attribute Function? onerror;
           attribute Function? onfocus;
           attribute Function? onhashchange;
           attribute Function? oninput;
           attribute Function? oninvalid;
           attribute Function? onkeydown;
           attribute Function? onkeypress;
           attribute Function? onkeyup;
           attribute Function? onload;
           attribute Function? onloadeddata;
           attribute Function? onloadedmetadata;
           attribute Function? onloadstart;
           attribute Function? onmessage;
           attribute Function? onmousedown;
           attribute Function? onmousemove;
           attribute Function? onmouseout;
           attribute Function? onmouseover;
           attribute Function? onmouseup;
           attribute Function? onmousewheel;
           attribute Function? onoffline;
           attribute Function? ononline;
           attribute Function? onpause;
           attribute Function? onplay;
           attribute Function? onplaying;
           attribute Function? onpagehide;
           attribute Function? onpageshow;
           attribute Function? onpopstate;
           attribute Function? onprogress;
           attribute Function? onratechange;
           attribute Function? onreadystatechange;
           attribute Function? onredo;
           attribute Function? onreset;
           attribute Function? onresize;
           attribute Function? onscroll;
           attribute Function? onseeked;
           attribute Function? onseeking;
           attribute Function? onselect;
           attribute Function? onshow;
           attribute Function? onstalled;
           attribute Function? onstorage;
           attribute Function? onsubmit;
           attribute Function? onsuspend;
           attribute Function? ontimeupdate;
           attribute Function? onundo;
           attribute Function? onunload;
           attribute Function? onvolumechange;
           attribute Function? onwaiting;
};
Window implements EventTarget;

interface BarProp {
           attribute boolean visible;
};

interface History {
  readonly attribute long length;
  readonly attribute any state;
  void go(in optional long delta);
  void back();
  void forward();
  void pushState(in any data, in DOMString title, in optional DOMString url);
  void replaceState(in any data, in DOMString title, in optional DOMString url);
};

interface Location {
  stringifier attribute DOMString href;
  void assign(in DOMString url);
  void replace(in DOMString url);
  void reload();

  // URL decomposition IDL attributes
           attribute DOMString protocol;
           attribute DOMString host;
           attribute DOMString hostname;
           attribute DOMString port;
           attribute DOMString pathname;
           attribute DOMString search;
           attribute DOMString hash;

  // resolving relative URLs
  DOMString resolveURL(in DOMString url);
};

interface PopStateEvent : Event {
  readonly attribute any state;
  void initPopStateEvent(in DOMString typeArg, in boolean canBubbleArg, in boolean cancelableArg, in any stateArg);
};

interface HashChangeEvent : Event {
  readonly attribute DOMString oldURL;
  readonly attribute DOMString newURL;
  void initHashChangeEvent(in DOMString typeArg, in boolean canBubbleArg, in boolean cancelableArg, in DOMString oldURLArg, in DOMString newURLArg);
};

interface PageTransitionEvent : Event {
  readonly attribute boolean persisted;
  void initPageTransitionEvent(in DOMString typeArg, in boolean canBubbleArg, in boolean cancelableArg, in boolean persistedArg);
};

interface BeforeUnloadEvent : Event {
           attribute DOMString returnValue;
};

interface ApplicationCache {

  // update status
  const unsigned short UNCACHED = 0;
  const unsigned short IDLE = 1;
  const unsigned short CHECKING = 2;
  const unsigned short DOWNLOADING = 3;
  const unsigned short UPDATEREADY = 4;
  const unsigned short OBSOLETE = 5;
  readonly attribute unsigned short status;

  // updates
  void update();
  void swapCache();

  // events
           attribute Function? onchecking;
           attribute Function? onerror;
           attribute Function? onnoupdate;
           attribute Function? ondownloading;
           attribute Function? onprogress;
           attribute Function? onupdateready;
           attribute Function? oncached;
           attribute Function? onobsolete;
};
ApplicationCache implements EventTarget;

[Supplemental, NoInterfaceObject]
interface NavigatorOnLine {
  readonly attribute boolean onLine;
};

[Callback=FunctionOnly, NoInterfaceObject]
interface Function {
  any call(in any... arguments);
};

[Supplemental, NoInterfaceObject]
interface WindowBase64 {
  DOMString btoa(in DOMString btoa);
  DOMString atob(in DOMString atob);
};
Window implements WindowBase64;

[Supplemental, NoInterfaceObject]
interface WindowTimers {
  long setTimeout(in any handler, in optional any timeout, in any... args);
  void clearTimeout(in long handle);
  long setInterval(in any handler, in optional any timeout, in any... args);
  void clearInterval(in long handle);
};
Window implements WindowTimers;

[NoInterfaceObject] interface WindowModal {
  readonly attribute any dialogArguments;
           attribute DOMString returnValue;
};

interface Navigator {
  // objects implementing this interface also implement the interfaces given below
};
Navigator implements NavigatorID;
Navigator implements NavigatorOnLine;
Navigator implements NavigatorContentUtils;
Navigator implements NavigatorStorageUtils;

[Supplemental, NoInterfaceObject]
interface NavigatorID {
  readonly attribute DOMString appName;
  readonly attribute DOMString appVersion;
  readonly attribute DOMString platform;
  readonly attribute DOMString userAgent;
};

[Supplemental, NoInterfaceObject]
interface NavigatorContentUtils {
  // content handler registration
  void registerProtocolHandler(in DOMString scheme, in DOMString url, in DOMString title);
  void registerContentHandler(in DOMString mimeType, in DOMString url, in DOMString title);
};

[Supplemental, NoInterfaceObject]
interface NavigatorStorageUtils {
  void yieldForStorageUpdates();
};

interface External {
  void AddSearchProvider(in DOMString engineURL);
  unsigned long IsSearchProviderInstalled(in DOMString engineURL);
};

interface DataTransfer {
           attribute DOMString dropEffect;
           attribute DOMString effectAllowed;

  readonly attribute DataTransferItemList items;

  void setDragImage(in Element image, in long x, in long y);
  void addElement(in Element element);

  /* old interface */
  readonly attribute DOMStringList types;
  DOMString getData(in DOMString format);
  void setData(in DOMString format, in DOMString data);
  void clearData(in optional DOMString format);
  readonly attribute FileList files;
};

interface DataTransferItemList {
  readonly attribute unsigned long length;
  getter DataTransferItem (in unsigned long index);
  deleter void (in unsigned long index);
  void clear();

  DataTransferItem? add(in DOMString data, in DOMString type);
  DataTransferItem? add(in File data);
};

interface DataTransferItem {
    readonly attribute DOMString kind;
    readonly attribute DOMString type;
    void getAsString(in FunctionStringCallback? callback);
    File? getAsFile();
};

[Callback=FunctionOnly, NoInterfaceObject]
interface FunctionStringCallback {
  void handleEvent(in DOMString data);
};

interface DragEvent : MouseEvent {
  readonly attribute DataTransfer? dataTransfer;

  void initDragEvent(in DOMString typeArg, in boolean canBubbleArg, in boolean cancelableArg, in any dummyArg, in long detailArg, in long screenXArg, in long screenYArg, in long clientXArg, in long clientYArg, in boolean ctrlKeyArg, in boolean altKeyArg, in boolean shiftKeyArg, in boolean metaKeyArg, in unsigned short buttonArg, in EventTarget relatedTargetArg, in DataTransfer? dataTransferArg);
};

interface UndoManager {
  readonly attribute unsigned long length;
  getter any item(in unsigned long index);
  readonly attribute unsigned long position;
  unsigned long add(in any data, in DOMString title);
  void remove(in unsigned long index);
  void clearUndo();
  void clearRedo();
};

interface UndoManagerEvent : Event {
  readonly attribute any data;
  void initUndoManagerEvent(in DOMString typeArg, in boolean canBubbleArg, in boolean cancelableArg, in any dataArg);
};

[Supplemental, NoInterfaceObject]
interface NavigatorUserMedia {
  void getUserMedia(in DOMString options, in NavigatorUserMediaSuccessCallback? successCallback, in optional NavigatorUserMediaErrorCallback? errorCallback);
};
Navigator implements NavigatorUserMedia;

[Callback=FunctionOnly, NoInterfaceObject]
interface NavigatorUserMediaSuccessCallback {
  void handleEvent(in LocalMediaStream stream);
};

[NoInterfaceObject]
interface NavigatorUserMediaError {
  const unsigned short PERMISSION_DENIED = 1;
  readonly attribute unsigned short code;
};

[Callback=FunctionOnly, NoInterfaceObject]
interface NavigatorUserMediaErrorCallback {
  void handleEvent(in NavigatorUserMediaError error);
};

[Constructor(in MediaStream parentStream)]
interface MediaStream {
  readonly attribute DOMString label;
  readonly attribute MediaStreamTrackList tracks;

  MediaStreamRecorder record();

  const unsigned short LIVE = 1;
  const unsigned short ENDED = 2;
  readonly attribute unsigned short readyState;
           attribute Function? onended;
};
MediaStream implements EventTarget;

interface LocalMediaStream : MediaStream {
  void stop();
};

typedef MediaStreamTrack[] MediaStreamTrackList;

interface MediaStreamTrack {
  readonly attribute DOMString kind;
  readonly attribute DOMString label;
           attribute boolean enabled;
};

interface MediaStreamRecorder {
  void getRecordedData(in BlobCallback? callback);
};

[Callback=FunctionOnly, NoInterfaceObject]
interface BlobCallback {
  void handleEvent(in Blob blob);
};

[Supplemental]
interface URL {
  static DOMString createObjectURL(in MediaStream stream);
};

[Constructor(in DOMString configuration, in SignalingCallback signalingCallback)]
interface PeerConnection {
  void processSignalingMessage(in DOMString message);

  const unsigned short NEW = 0;
  const unsigned short NEGOTIATING = 1;
  const unsigned short ACTIVE = 2;
  const unsigned short CLOSED = 3;
  readonly attribute unsigned short readyState;

  void send(in DOMString text);
  void addStream(in MediaStream stream);
  void removeStream(in MediaStream stream);
  readonly attribute MediaStream[] localStreams;
  readonly attribute MediaStream[] remoteStreams;

  void close();

  // connection quality information
           attribute Function? onconnecting;
           attribute Function? onopen;
           attribute Function? onmessage;
           attribute Function? onaddstream;
           attribute Function? onremovestream;
};
PeerConnection implements EventTarget;

[Callback=FunctionOnly, NoInterfaceObject]
interface SignalingCallback {
  void handleEvent(in DOMString message, in PeerConnection source);
};

interface StreamEvent : Event {
  readonly attribute MediaStream? stream;
  void initStreamEvent(in DOMString typeArg, in boolean canBubbleArg, in boolean cancelableArg, in MediaStream? streamArg);
};

interface MessageEvent : Event {
  readonly attribute any data;
  readonly attribute DOMString origin;
  readonly attribute DOMString lastEventId;
  readonly attribute WindowProxy? source;
  readonly attribute MessagePort[] ports;
  void initMessageEvent(in DOMString typeArg, in boolean canBubbleArg, in boolean cancelableArg, in any dataArg, in DOMString originArg, in DOMString lastEventIdArg, in WindowProxy? sourceArg, in sequence<MessagePort> portsArg);
};

[Constructor]
interface MessageChannel {
  readonly attribute MessagePort port1;
  readonly attribute MessagePort port2;
};

interface MessagePort {
  void postMessage(in any message, in optional sequence<Transferable> transfer);
  void start();
  void close();

  // event handlers
           attribute Function? onmessage;
};
MessagePort implements EventTarget;
MessagePort implements Transferable;

interface HTMLAppletElement : HTMLElement {
           attribute DOMString align;
           attribute DOMString alt;
           attribute DOMString archive;
           attribute DOMString code;
           attribute DOMString codeBase;
           attribute DOMString height;
           attribute unsigned long hspace;
           attribute DOMString name;
           attribute DOMString _object; // the underscore is not part of the identifier
           attribute unsigned long vspace;
           attribute DOMString width;
};

interface HTMLMarqueeElement : HTMLElement {
           attribute DOMString behavior;
           attribute DOMString bgColor;
           attribute DOMString direction;
           attribute DOMString height;
           attribute unsigned long hspace;
           attribute long loop;
           attribute unsigned long scrollAmount;
           attribute unsigned long scrollDelay;
           attribute boolean trueSpeed;
           attribute unsigned long vspace;
           attribute DOMString width;

           attribute Function? onbounce;
           attribute Function? onfinish;
           attribute Function? onstart;

  void start();
  void stop();
};

interface HTMLFrameSetElement : HTMLElement {
           attribute DOMString cols;
           attribute DOMString rows;
           attribute Function? onafterprint;
           attribute Function? onbeforeprint;
           attribute Function? onbeforeunload;
           attribute Function? onblur;
           attribute Function? onerror;
           attribute Function? onfocus;
           attribute Function? onhashchange;
           attribute Function? onload;
           attribute Function? onmessage;
           attribute Function? onoffline;
           attribute Function? ononline;
           attribute Function? onpagehide;
           attribute Function? onpageshow;
           attribute Function? onpopstate;
           attribute Function? onredo;
           attribute Function? onresize;
           attribute Function? onscroll;
           attribute Function? onstorage;
           attribute Function? onundo;
           attribute Function? onunload;
};

interface HTMLFrameElement : HTMLElement {
           attribute DOMString frameBorder;
           attribute DOMString longDesc;
           attribute DOMString marginHeight;
           attribute DOMString marginWidth;
           attribute DOMString name;
           attribute boolean noResize;
           attribute DOMString scrolling;
           attribute DOMString src;
  readonly attribute Document? contentDocument;
  readonly attribute WindowProxy? contentWindow;
};

[Supplemental]
interface HTMLAnchorElement {
           attribute DOMString coords;
           attribute DOMString charset;
           attribute DOMString name;
           attribute DOMString rev;
           attribute DOMString shape;
};

[Supplemental]
interface HTMLAreaElement {
           attribute boolean noHref;
};

interface HTMLBaseFontElement : HTMLElement {
           attribute DOMString color;
           attribute DOMString face;
           attribute long size;
};

[Supplemental]
interface HTMLBodyElement {
           attribute DOMString text;
           attribute DOMString bgColor;
           attribute DOMString background;
           attribute DOMString link;
           attribute DOMString vLink;
           attribute DOMString aLink;
};

[Supplemental]
interface HTMLBRElement {
           attribute DOMString clear;
};

[Supplemental]
interface HTMLTableCaptionElement {
           attribute DOMString align;
};

[Supplemental]
interface HTMLTableColElement {
           attribute DOMString align;
           attribute DOMString ch;
           attribute DOMString chOff;
           attribute DOMString vAlign;
           attribute DOMString width;
};

interface HTMLDirectoryElement : HTMLElement {
           attribute boolean compact;
};

[Supplemental]
interface HTMLDivElement {
           attribute DOMString align;
};

[Supplemental]
interface HTMLDListElement {
           attribute boolean compact;
};

[Supplemental]
interface HTMLEmbedElement {
           attribute DOMString align;
           attribute DOMString name;
};

interface HTMLFontElement : HTMLElement {
           attribute DOMString color;
           attribute DOMString face;
           attribute DOMString size;
};

[Supplemental]
interface HTMLHeadingElement {
           attribute DOMString align;
};

[Supplemental]
interface HTMLHRElement {
           attribute DOMString align;
           attribute DOMString color;
           attribute boolean noShade;
           attribute DOMString size;
           attribute DOMString width;
};

[Supplemental]
interface HTMLHtmlElement {
           attribute DOMString version;
};

[Supplemental]
interface HTMLIFrameElement {
           attribute DOMString align;
           attribute DOMString frameBorder;
           attribute DOMString longDesc;
           attribute DOMString marginHeight;
           attribute DOMString marginWidth;
           attribute DOMString scrolling;
};

[Supplemental]
interface HTMLImageElement {
           attribute DOMString name;
           attribute DOMString align;
           attribute DOMString border;
           attribute unsigned long hspace;
           attribute DOMString longDesc;
           attribute unsigned long vspace;
};

[Supplemental]
interface HTMLInputElement {
           attribute DOMString align;
           attribute DOMString useMap;
};

[Supplemental]
interface HTMLLegendElement {
           attribute DOMString align;
};

[Supplemental]
interface HTMLLIElement {
           attribute DOMString type;
};

[Supplemental]
interface HTMLLinkElement {
           attribute DOMString charset;
           attribute DOMString rev;
           attribute DOMString target;
};

[Supplemental]
interface HTMLMenuElement {
           attribute boolean compact;
};

[Supplemental]
interface HTMLMetaElement {
           attribute DOMString scheme;
};

[Supplemental]
interface HTMLObjectElement {
           attribute DOMString align;
           attribute DOMString archive;
           attribute DOMString border;
           attribute DOMString code;
           attribute DOMString codeBase;
           attribute DOMString codeType;
           attribute boolean declare;
           attribute unsigned long hspace;
           attribute DOMString standby;
           attribute unsigned long vspace;
};

[Supplemental]
interface HTMLOListElement {
           attribute boolean compact;
};

[Supplemental]
interface HTMLParagraphElement {
           attribute DOMString align;
};

[Supplemental]
interface HTMLParamElement {
           attribute DOMString type;
           attribute DOMString valueType;
};

[Supplemental]
interface HTMLPreElement {
           attribute unsigned long width;
};

[Supplemental]
interface HTMLScriptElement {
           attribute DOMString event;
           attribute DOMString htmlFor;
};

[Supplemental]
interface HTMLTableElement {
           attribute DOMString align;
           attribute DOMString bgColor;
           attribute DOMString cellPadding;
           attribute DOMString cellSpacing;
           attribute DOMString frame;
           attribute DOMString rules;
           attribute DOMString summary;
           attribute DOMString width;
};

[Supplemental]
interface HTMLTableSectionElement {
           attribute DOMString align;
           attribute DOMString ch;
           attribute DOMString chOff;
           attribute DOMString vAlign;
};

[Supplemental]
interface HTMLTableCellElement {
           attribute DOMString abbr;
           attribute DOMString align;
           attribute DOMString axis;
           attribute DOMString bgColor;
           attribute DOMString ch;
           attribute DOMString chOff;
           attribute DOMString height;
           attribute boolean noWrap;
           attribute DOMString vAlign;
           attribute DOMString width;
};

[Supplemental]
interface HTMLTableRowElement {
           attribute DOMString align;
           attribute DOMString bgColor;
           attribute DOMString ch;
           attribute DOMString chOff;
           attribute DOMString vAlign;
};

[Supplemental]
interface HTMLUListElement {
           attribute boolean compact;
           attribute DOMString type;
};

[Supplemental]
interface HTMLDocument {
           attribute DOMString fgColor;
           attribute DOMString bgColor;
           attribute DOMString linkColor;
           attribute DOMString vlinkColor;
           attribute DOMString alinkColor;

  readonly attribute HTMLCollection anchors;
  readonly attribute HTMLCollection applets;

  void clear();

  readonly attribute HTMLAllCollection all;
};