// HTML WebIDL 
// retrived from http://www.whatwg.org/specs/web-apps/current-work/
// 23rd October 2012


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

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

interface RadioNodeList : NodeList {
          attribute DOMString value;
};

interface HTMLOptionsCollection : HTMLCollection {
  // inherits item()
           attribute unsigned long length; // overrides inherited length
  legacycaller getter object? namedItem(DOMString name); // overrides inherited namedItem()
  setter creator void (unsigned long index, HTMLOptionElement? option);
  void add((HTMLOptionElement or HTMLOptGroupElement) element, optional (HTMLElement or long)? before = null);
  void remove(long index);
           attribute long selectedIndex;
};

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

typedef sequence<any> PropertyValueArray;

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

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

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

[NoInterfaceObject]
interface Transferable { };

[OverrideBuiltins]
partial interface Document {
  // resource metadata management
  [PutForwards=href] readonly attribute Location? location;
           attribute DOMString domain;
  readonly attribute DOMString referrer;
           attribute DOMString cookie;
  readonly attribute DOMString lastModified;
  readonly attribute DOMString readyState;

  // DOM tree accessors
  getter object (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(DOMString elementName);
  NodeList getItems(optional DOMString typeNames); // microdata
  readonly attribute DOMElementMap cssElementMap;

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

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

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

  // special event handler IDL attributes that only apply to Document objects
  [LenientThis] attribute EventHandler onreadystatechange;
};

partial interface XMLDocument {
  boolean load(DOMString url);
};

interface HTMLElement : Element {
  // metadata attributes
           attribute DOMString title;
           attribute DOMString lang;
           attribute boolean translate;
           attribute DOMString dir;
  readonly attribute DOMStringMap dataset;

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

  // 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;
  void forceSpellCheck();

  // 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 EventHandler onabort;
           attribute EventHandler onblur;
           attribute EventHandler oncancel;
           attribute EventHandler oncanplay;
           attribute EventHandler oncanplaythrough;
           attribute EventHandler onchange;
           attribute EventHandler onclick;
           attribute EventHandler onclose;
           attribute EventHandler oncontextmenu;
           attribute EventHandler oncuechange;
           attribute EventHandler ondblclick;
           attribute EventHandler ondrag;
           attribute EventHandler ondragend;
           attribute EventHandler ondragenter;
           attribute EventHandler ondragleave;
           attribute EventHandler ondragover;
           attribute EventHandler ondragstart;
           attribute EventHandler ondrop;
           attribute EventHandler ondurationchange;
           attribute EventHandler onemptied;
           attribute EventHandler onended;
           attribute OnErrorEventHandler onerror;
           attribute EventHandler onfocus;
           attribute EventHandler oninput;
           attribute EventHandler oninvalid;
           attribute EventHandler onkeydown;
           attribute EventHandler onkeypress;
           attribute EventHandler onkeyup;
           attribute EventHandler onload;
           attribute EventHandler onloadeddata;
           attribute EventHandler onloadedmetadata;
           attribute EventHandler onloadstart;
           attribute EventHandler onmousedown;
           attribute EventHandler onmousemove;
           attribute EventHandler onmouseout;
           attribute EventHandler onmouseover;
           attribute EventHandler onmouseup;
           attribute EventHandler onmousewheel;
           attribute EventHandler onpause;
           attribute EventHandler onplay;
           attribute EventHandler onplaying;
           attribute EventHandler onprogress;
           attribute EventHandler onratechange;
           attribute EventHandler onreset;
           attribute EventHandler onscroll;
           attribute EventHandler onseeked;
           attribute EventHandler onseeking;
           attribute EventHandler onselect;
           attribute EventHandler onshow;
           attribute EventHandler onstalled;
           attribute EventHandler onsubmit;
           attribute EventHandler onsuspend;
           attribute EventHandler ontimeupdate;
           attribute EventHandler onvolumechange;
           attribute EventHandler 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 EventHandler onafterprint;
           attribute EventHandler onbeforeprint;
           attribute EventHandler onbeforeunload;
           attribute EventHandler onblur;
           attribute OnErrorEventHandler onerror;
           attribute EventHandler onfocus;
           attribute EventHandler onhashchange;
           attribute EventHandler onload;
           attribute EventHandler onmessage;
           attribute EventHandler onoffline;
           attribute EventHandler ononline;
           attribute EventHandler onpopstate;
           attribute EventHandler onpagehide;
           attribute EventHandler onpageshow;
           attribute EventHandler onresize;
           attribute EventHandler onscroll;
           attribute EventHandler onstorage;
           attribute EventHandler 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 download;
           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 HTMLDataElement : HTMLElement {
           attribute DOMString value;
};

interface HTMLTimeElement : HTMLElement {
           attribute DOMString datetime;
};

interface HTMLSpanElement : HTMLElement {};

interface HTMLBRElement : HTMLElement {};

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

[NamedConstructor=Image(),
 NamedConstructor=Image(unsigned long width),
 NamedConstructor=Image(unsigned long width, unsigned long height)]
interface HTMLImageElement : HTMLElement {
           attribute DOMString alt;
           attribute DOMString src;
           attribute DOMString srcset;
           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;
  legacycaller any (any... arguments);
};

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(DOMString error);

  legacycaller any (any... arguments);
};

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(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;

  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;

  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(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;
  void fastSeek(double time);
  readonly attribute unrestricted double duration;
  readonly attribute Date startDate;
  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;
  TextTrack addTextTrack(DOMString kind, optional DOMString label, 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 : EventTarget {
  readonly attribute unsigned long length;
  getter AudioTrack (unsigned long index);
  AudioTrack? getTrackById(DOMString id);

           attribute EventHandler onchange;
           attribute EventHandler onaddtrack;
           attribute EventHandler onremovetrack;
};

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

interface VideoTrackList : EventTarget {
  readonly attribute unsigned long length;
  getter VideoTrack (unsigned long index);
  VideoTrack? getTrackById(DOMString id);
  readonly attribute long selectedIndex;

           attribute EventHandler onchange;
           attribute EventHandler onaddtrack;
           attribute EventHandler onremovetrack;
};

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

enum MediaControllerPlaybackState { "waiting", "playing", "ended" };
[Constructor]
interface MediaController : EventTarget {
  readonly attribute unsigned short readyState; // uses HTMLMediaElement.readyState's values

  readonly attribute TimeRanges buffered;
  readonly attribute TimeRanges seekable;
  readonly attribute unrestricted double duration;
           attribute double currentTime;

  readonly attribute boolean paused;
  readonly attribute MediaControllerPlaybackState playbackState;
  readonly attribute TimeRanges played;
  void pause();
  void unpause();
  void play(); // calls play() on all media elements as well

           attribute double defaultPlaybackRate;
           attribute double playbackRate;

           attribute double volume;
           attribute boolean muted;

           attribute EventHandler onemptied;
           attribute EventHandler onloadedmetadata;
           attribute EventHandler onloadeddata;
           attribute EventHandler oncanplay;
           attribute EventHandler oncanplaythrough;
           attribute EventHandler onplaying;
           attribute EventHandler onended;
           attribute EventHandler onwaiting;

           attribute EventHandler ondurationchange;
           attribute EventHandler ontimeupdate;
           attribute EventHandler onplay;
           attribute EventHandler onpause;
           attribute EventHandler onratechange;
           attribute EventHandler onvolumechange;
};

interface TextTrackList : EventTarget {
  readonly attribute unsigned long length;
  getter TextTrack (unsigned long index);

           attribute EventHandler onaddtrack;
           attribute EventHandler onremovetrack;
};

enum TextTrackMode { "disabled", "hidden", "showing" };
interface TextTrack : EventTarget {
  readonly attribute DOMString kind;
  readonly attribute DOMString label;
  readonly attribute DOMString language;
  readonly attribute DOMString inBandMetadataTrackDispatchType;

           attribute TextTrackMode mode;

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

  void addCue(TextTrackCue cue);
  void removeCue(TextTrackCue cue);

           attribute EventHandler oncuechange;
};

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

enum AutoKeyword { "auto" };
[Constructor(double startTime, double endTime, DOMString text)]
interface TextTrackCue : EventTarget {
  readonly attribute TextTrack? track;

           attribute DOMString id;
           attribute double startTime;
           attribute double endTime;
           attribute boolean pauseOnExit;
           attribute DOMString vertical;
           attribute boolean snapToLines;
           attribute (long or AutoKeyword) line;
           attribute long position;
           attribute long size;
           attribute DOMString align;
           attribute DOMString text;
  DocumentFragment getCueAsHTML();

           attribute EventHandler onenter;
           attribute EventHandler onexit;
};

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

[Constructor(DOMString type, optional TrackEventInit eventInitDict)]
interface TrackEvent : Event {
  readonly attribute object? track;
};

dictionary TrackEventInit : EventInit {
  object? track;
};

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

  DOMString toDataURL(optional DOMString type, any... arguments);
  DOMString toDataURLHD(optional DOMString type, any... arguments);
  void toBlob(FileCallback? _callback, optional DOMString type, any... arguments);
  void toBlobHD(FileCallback? _callback, optional DOMString type, any... arguments);

  object? getContext(DOMString contextId, any... arguments);
  boolean supportsContext(DOMString contextId, any... arguments);
};

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)
           attribute SVGMatrix currentTransform;
  void scale(unrestricted double x, unrestricted double y);
  void rotate(unrestricted double angle);
  void translate(unrestricted double x, unrestricted double y);
  void transform(unrestricted double a, unrestricted double b, unrestricted double c, unrestricted double d, unrestricted double e, unrestricted double f);
  void setTransform(unrestricted double a, unrestricted double b, unrestricted double c, unrestricted double d, unrestricted double e, unrestricted double f);
  void resetTransform();

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

  // image smoothing
           attribute boolean imageSmoothingEnabled; // (default true)

  // colors and styles (see also the CanvasDrawingStyles interface)
           attribute (DOMString or CanvasGradient or CanvasPattern) strokeStyle; // (default black)
           attribute (DOMString or CanvasGradient or CanvasPattern) fillStyle; // (default black)
  CanvasGradient createLinearGradient(double x0, double y0, double x1, double y1);
  CanvasGradient createRadialGradient(double x0, double y0, double r0, double x1, double y1, double r1);
  CanvasPattern createPattern((HTMLImageElement or HTMLCanvasElement or HTMLVideoElement) image, DOMString repetition);

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

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

  // path API (see also CanvasPathMethods)
  void beginPath();
  void fill();
  void fill(Path path);
  void stroke();
  void stroke(Path path);
  void drawSystemFocusRing(Element element);
  void drawSystemFocusRing(Path path, Element element);
  boolean drawCustomFocusRing(Element element);
  boolean drawCustomFocusRing(Path path, Element element);
  void scrollPathIntoView();
  void scrollPathIntoView(Path path);
  void clip();
  void clip(Path path);
  void resetClip();
  boolean isPointInPath(unrestricted double x, unrestricted double y);
  boolean isPointInPath(Path path, unrestricted double x, unrestricted double y);

  // text (see also the CanvasDrawingStyles interface)
  void fillText(DOMString text, unrestricted double x, unrestricted double y, optional unrestricted double maxWidth);
  void strokeText(DOMString text, unrestricted double x, unrestricted double y, optional unrestricted double maxWidth);
  TextMetrics measureText(DOMString text);

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

  // hit regions
  void addHitRegion(HitRegionOptions options);
  void removeHitRegion(HitRegionOptions options);

  // pixel manipulation
  ImageData createImageData(double sw, double sh);
  ImageData createImageData(ImageData imagedata);
  ImageData createImageDataHD(double sw, double sh);
  ImageData getImageData(double sx, double sy, double sw, double sh);
  ImageData getImageDataHD(double sx, double sy, double sw, double sh);
  void putImageData(ImageData imagedata, double dx, double dy);
  void putImageData(ImageData imagedata, double dx, double dy, double dirtyX, double dirtyY, double dirtyWidth, double dirtyHeight);
  void putImageDataHD(ImageData imagedata, double dx, double dy);
  void putImageDataHD(ImageData imagedata, double dx, double dy, double dirtyX, double dirtyY, double dirtyWidth, double dirtyHeight);
};
CanvasRenderingContext2D implements CanvasDrawingStyles;
CanvasRenderingContext2D implements CanvasPathMethods;

[NoInterfaceObject]
interface CanvasDrawingStyles {
  // line caps/joins
           attribute unrestricted double lineWidth; // (default 1)
           attribute DOMString lineCap; // "butt", "round", "square" (default "butt")
           attribute DOMString lineJoin; // "round", "bevel", "miter" (default "miter")
           attribute unrestricted double miterLimit; // (default 10)

  // dashed lines
  void setLineDash(sequence<unrestricted double> segments); // default empty
  sequence<unrestricted double> getLineDash();
           attribute unrestricted double lineDashOffset;

  // 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")
};

[NoInterfaceObject]
interface CanvasPathMethods {
  // shared path API methods
  void closePath();
  void moveTo(unrestricted double x, unrestricted double y);
  void lineTo(unrestricted double x, unrestricted double y);
  void quadraticCurveTo(unrestricted double cpx, unrestricted double cpy, unrestricted double x, unrestricted double y);
  void bezierCurveTo(unrestricted double cp1x, unrestricted double cp1y, unrestricted double cp2x, unrestricted double cp2y, unrestricted double x, unrestricted double y);
  void arcTo(unrestricted double x1, unrestricted double y1, unrestricted double x2, unrestricted double y2, unrestricted double radius);
  void arcTo(unrestricted double x1, unrestricted double y1, unrestricted double x2, unrestricted double y2, unrestricted double radiusX, unrestricted double radiusY, unrestricted double rotation);
  void rect(unrestricted double x, unrestricted double y, unrestricted double w, unrestricted double h);
  void arc(unrestricted double x, unrestricted double y, unrestricted double radius, unrestricted double startAngle, unrestricted double endAngle, optional boolean anticlockwise = false);
  void ellipse(unrestricted double x, unrestricted double y, unrestricted double radiusX, unrestricted double radiusY, unrestricted double rotation, unrestricted double startAngle, unrestricted double endAngle, boolean anticlockwise);
};

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

interface CanvasPattern {
  // opaque object
  void setTransform(SVGMatrix transform);
};

interface TextMetrics {
  // x-direction
  readonly attribute double width; // advance width
  readonly attribute double actualBoundingBoxLeft;
  readonly attribute double actualBoundingBoxRight;

  // y-direction
  readonly attribute double fontBoundingBoxAscent;
  readonly attribute double fontBoundingBoxDescent;
  readonly attribute double actualBoundingBoxAscent;
  readonly attribute double actualBoundingBoxDescent;
  readonly attribute double emHeightAscent;
  readonly attribute double emHeightDescent;
  readonly attribute double hangingBaseline;
  readonly attribute double alphabeticBaseline;
  readonly attribute double ideographicBaseline;
};

dictionary HitRegionOptions {
  Path? path = null;
  DOMString id = "";
  DOMString? parentID = null;
  DOMString cursor = "inherit";
  // for control-backed regions:
  Element? control = null;
  // for unbacked regions:
  DOMString? label = null;
  DOMString? role = null;
};

interface ImageData {
  readonly attribute unsigned long width;
  readonly attribute unsigned long height;
  readonly attribute Uint8ClampedArray data;
};

[Constructor(optional Element scope)]
interface DrawingStyle { };
DrawingStyle implements CanvasDrawingStyles;

[Constructor,
 Constructor(Path path),
 Constructor(DOMString d)]
interface Path {
  void addPath(Path path, SVGMatrix? transformation);
  void addPathByStrokingPath(Path path, CanvasDrawingStyles styles, SVGMatrix? transformation);
  void addText(DOMString text, CanvasDrawingStyles styles, SVGMatrix? transformation, unrestricted double x, unrestricted double y, optional unrestricted double maxWidth);
  void addPathByStrokingText(DOMString text, CanvasDrawingStyles styles, SVGMatrix? transformation, unrestricted double x, unrestricted double y, optional unrestricted double maxWidth);
  void addText(DOMString text, CanvasDrawingStyles styles, SVGMatrix? transformation, Path path, optional unrestricted double maxWidth);
  void addPathByStrokingText(DOMString text, CanvasDrawingStyles styles, SVGMatrix? transformation, Path path, optional unrestricted double maxWidth);
};
Path implements CanvasPathMethods;

partial interface Screen {
  readonly attribute double canvasResolution;
};

partial interface MouseEvent {
  readonly attribute DOMString? region;
};

partial dictionary MouseEventInit {
  DOMString? region;
};

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 download;
           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(optional long index);
  void deleteRow(long index);
};

interface HTMLTableCaptionElement : HTMLElement {};

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

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

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

interface HTMLTableDataCellElement : HTMLTableCellElement {};

interface HTMLTableHeaderCellElement : HTMLTableCellElement {
           attribute DOMString scope;
           attribute DOMString abbr;
};

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;
  getter Element (unsigned long index);
  getter object (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(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 unsigned long height;
           attribute boolean indeterminate;
           attribute DOMString inputMode;
  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;
  [TreatNullAs=EmptyString] attribute DOMString value;
           attribute Date? valueAsDate;
           attribute unrestricted double valueAsNumber;
           attribute unsigned long width;

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

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

  readonly attribute NodeList labels;

  void select();
           attribute unsigned long selectionStart;
           attribute unsigned long selectionEnd;
           attribute DOMString selectionDirection;

  void setRangeText(DOMString replacement);
  void setRangeText(DOMString replacement, unsigned long start, unsigned long end, optional SelectionMode selectionMode);

  void setSelectionRange(unsigned long start, unsigned long end, 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 boolean 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(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 Element item(unsigned long index);
  object namedItem(DOMString name);
  void add((HTMLOptionElement or HTMLOptGroupElement) element, optional (HTMLElement or long)? before = null);
  void remove(long index);
  setter creator void (unsigned long index, HTMLOptionElement? option);

  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(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(DOMString text),
 NamedConstructor=Option(DOMString text, DOMString value),
 NamedConstructor=Option(DOMString text, DOMString value, boolean defaultSelected),
 NamedConstructor=Option(DOMString text, DOMString value, boolean defaultSelected, 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 DOMString autocomplete;
           attribute boolean autofocus;
           attribute unsigned long cols;
           attribute DOMString dirName;
           attribute boolean disabled;
  readonly attribute HTMLFormElement? form;
           attribute DOMString inputMode;
           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;
  [TreatNullAs=EmptyString] attribute DOMString value;
  readonly attribute unsigned long textLength;

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

  readonly attribute NodeList labels;

  void select();
           attribute unsigned long selectionStart;
           attribute unsigned long selectionEnd;
           attribute DOMString selectionDirection;

  void setRangeText(DOMString replacement);
  void setRangeText(DOMString replacement, unsigned long start, unsigned long end, optional SelectionMode selectionMode);

  void setSelectionRange(unsigned long start, unsigned long end, 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(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(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;
  readonly attribute HTMLElement? command;
};

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

interface HTMLDialogElement : HTMLElement {
           attribute boolean open;
           attribute DOMString returnValue;
  void show(optional (MouseEvent or Element) anchor);
  void showModal(optional (MouseEvent or Element) anchor);
  void close(optional DOMString returnValue);
};

[NamedPropertiesObject]
interface Window : EventTarget {
  // the current browsing context
  [Unforgeable] readonly attribute WindowProxy window;
  [Replaceable] readonly attribute WindowProxy self;
  [Unforgeable] readonly attribute Document document;
           attribute DOMString name;
  [PutForwards=href, Unforgeable] readonly attribute Location location;
  readonly attribute History history;
  [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;
  [Unforgeable] readonly attribute WindowProxy top;
           attribute WindowProxy? opener;
  readonly attribute WindowProxy parent;
  readonly attribute Element? frameElement;
  WindowProxy open(optional DOMString url, optional DOMString target, optional DOMString features, optional boolean replace);
  getter WindowProxy (unsigned long index);
  getter object (DOMString name);

  // the user agent
  readonly attribute Navigator navigator;

  readonly attribute External external;
  readonly attribute ApplicationCache applicationCache;

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

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

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

interface BarProp {
           attribute boolean visible;
};

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

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

[Constructor(DOMString type, optional PopStateEventInit eventInitDict)]
interface PopStateEvent : Event {
  readonly attribute any state;
};

dictionary PopStateEventInit : EventInit {
  any state;
};

[Constructor(DOMString type, optional HashChangeEventInit eventInitDict)]
interface HashChangeEvent : Event {
  readonly attribute DOMString oldURL;
  readonly attribute DOMString newURL;
};

dictionary HashChangeEventInit : EventInit {
  DOMString oldURL;
  DOMString newURL;
};

[Constructor(DOMString type, optional PageTransitionEventInit eventInitDict)]
interface PageTransitionEvent : Event {
  readonly attribute boolean persisted;
};

dictionary PageTransitionEventInit : EventInit {
  boolean persisted;
};

interface BeforeUnloadEvent : Event {
           attribute DOMString returnValue;
};

interface ApplicationCache : EventTarget {

  // 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 abort();
  void swapCache();

  // events
           attribute EventHandler onchecking;
           attribute EventHandler onerror;
           attribute EventHandler onnoupdate;
           attribute EventHandler ondownloading;
           attribute EventHandler onprogress;
           attribute EventHandler onupdateready;
           attribute EventHandler oncached;
           attribute EventHandler onobsolete;
};

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

[TreatNonCallableAsNull]
callback EventHandlerNonNull = any (Event event);
typedef EventHandlerNonNull? EventHandler;

[TreatNonCallableAsNull]
callback OnErrorEventHandlerNonNull = any ((Event or DOMString) event, DOMString source, unsigned long lineno, unsigned long column);
typedef OnErrorEventHandlerNonNull? OnErrorEventHandler;

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

[NoInterfaceObject]
interface WindowTimers {
  long setTimeout(Function handler, optional long timeout, any... arguments);
  long setTimeout(DOMString handler, optional long timeout, any... arguments);
  void clearTimeout(long handle);
  long setInterval(Function handler, optional long timeout, any... arguments);
  long setInterval(DOMString handler, optional long timeout, any... arguments);
  void clearInterval(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;

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

[NoInterfaceObject]
interface NavigatorContentUtils {
  // content handler registration
  void registerProtocolHandler(DOMString scheme, DOMString url, DOMString title);
  void registerContentHandler(DOMString mimeType, DOMString url, DOMString title);
  DOMString isProtocolHandlerRegistered(DOMString scheme, DOMString url);
  DOMString isContentHandlerRegistered(DOMString mimeType, DOMString url);
  void unregisterProtocolHandler(DOMString scheme, DOMString url);
  void unregisterContentHandler(DOMString mimeType, DOMString url);
};

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

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

interface DataTransfer {
           attribute DOMString dropEffect;
           attribute DOMString effectAllowed;

  readonly attribute DataTransferItemList items;

  void setDragImage(Element image, long x, long y);

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

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

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

interface DataTransferItem {
  readonly attribute DOMString kind;
  readonly attribute DOMString type;
  void getAsString(FunctionStringCallback? _callback);

  File? getAsFile();
};

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

[Constructor(DOMString type, optional DragEventInit eventInitDict)]
interface DragEvent : MouseEvent {
  readonly attribute DataTransfer? dataTransfer;
};

dictionary DragEventInit : MouseEventInit {
  DataTransfer? dataTransfer;
};

interface WorkerGlobalScope : EventTarget {
  readonly attribute WorkerGlobalScope self;
  readonly attribute WorkerLocation location;

  void close();
           attribute EventHandler onerror;
           attribute EventHandler onoffline;
           attribute EventHandler ononline;
};
WorkerGlobalScope implements WorkerUtils;

interface DedicatedWorkerGlobalScope : WorkerGlobalScope {
  void postMessage(any message, optional sequence<Transferable> transfer);
           attribute EventHandler onmessage;
};

interface SharedWorkerGlobalScope : WorkerGlobalScope {
  readonly attribute DOMString name;
  readonly attribute ApplicationCache applicationCache;
           attribute EventHandler onconnect;
};

[Constructor(DOMString type, optional ErrorEventInit eventInitDict)]
interface ErrorEvent : Event {
  readonly attribute DOMString message;
  readonly attribute DOMString filename;
  readonly attribute unsigned long lineno;
  readonly attribute unsigned long column;
};

dictionary ErrorEventInit : EventInit {
  DOMString message;
  DOMString filename;
  unsigned long lineno;
  unsigned long column;
};

[NoInterfaceObject]
interface AbstractWorker {
           attribute EventHandler onerror;

};

[Constructor(DOMString scriptURL)]
interface Worker : EventTarget {
  void terminate();

  void postMessage(any message, optional sequence<Transferable> transfer);
           attribute EventHandler onmessage;
};
Worker implements AbstractWorker;

[Constructor(DOMString scriptURL, optional DOMString name)]
interface SharedWorker : EventTarget {
  readonly attribute MessagePort port;
};
SharedWorker implements AbstractWorker;

[NoInterfaceObject]
interface WorkerUtils {
  void importScripts(DOMString... urls);
  readonly attribute WorkerNavigator navigator;
};
WorkerUtils implements WindowTimers;
WorkerUtils implements WindowBase64;

interface WorkerNavigator {};
WorkerNavigator implements NavigatorID;
WorkerNavigator implements NavigatorOnLine;

interface WorkerLocation {
  // URL decomposition IDL attributes
  stringifier readonly attribute DOMString href;
  readonly attribute DOMString protocol;
  readonly attribute DOMString host;
  readonly attribute DOMString hostname;
  readonly attribute DOMString port;
  readonly attribute DOMString pathname;
  readonly attribute DOMString search;
  readonly attribute DOMString hash;
};

[Constructor(DOMString type, optional MessageEventInit eventInitDict)]
interface MessageEvent : Event {
  readonly attribute any data;
  readonly attribute DOMString origin;
  readonly attribute DOMString lastEventId;
  readonly attribute (WindowProxy or MessagePort)? source;
  readonly attribute MessagePort[]? ports;
};

dictionary MessageEventInit : EventInit {
  any data;
  DOMString origin;
  DOMString lastEventId;
  WindowProxy? source;
  MessagePort[]? ports;
};

[Constructor(DOMString url, optional EventSourceInit eventSourceInitDict)]
interface EventSource : EventTarget {
  readonly attribute DOMString url;
  readonly attribute boolean withCredentials;

  // ready state
  const unsigned short CONNECTING = 0;
  const unsigned short OPEN = 1;
  const unsigned short CLOSED = 2;
  readonly attribute unsigned short readyState;

  // networking
           attribute EventHandler onopen;
           attribute EventHandler onmessage;
           attribute EventHandler onerror;
  void close();
};

dictionary EventSourceInit {
  boolean withCredentials = false;
};

enum BinaryType { "blob", "arraybuffer" };
[Constructor(DOMString url, optional (DOMString or DOMString[]) protocols)]
interface WebSocket : EventTarget {
  readonly attribute DOMString url;

  // ready state
  const unsigned short CONNECTING = 0;
  const unsigned short OPEN = 1;
  const unsigned short CLOSING = 2;
  const unsigned short CLOSED = 3;
  readonly attribute unsigned short readyState;
  readonly attribute unsigned long bufferedAmount;

  // networking
           attribute EventHandler onopen;
           attribute EventHandler onerror;
           attribute EventHandler onclose;
  readonly attribute DOMString extensions;
  readonly attribute DOMString protocol;
  void close([Clamp] optional unsigned short code, optional DOMString reason);

  // messaging
           attribute EventHandler onmessage;
           attribute BinaryType binaryType;
  void send(DOMString data);
  void send(Blob data);
  void send(ArrayBuffer data);
  void send(ArrayBufferView data);
};

[Constructor(DOMString type, optional CloseEventInit eventInitDict)]
interface CloseEvent : Event {
  readonly attribute boolean wasClean;
  readonly attribute unsigned short code;
  readonly attribute DOMString reason;
};

dictionary CloseEventInit : EventInit {
  boolean wasClean;
  unsigned short code;
  DOMString reason;
};

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

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

  // event handlers
           attribute EventHandler onmessage;
};
MessagePort implements Transferable;

interface Storage {
  readonly attribute unsigned long length;
  DOMString? key(unsigned long index);
  getter DOMString getItem(DOMString key);
  setter creator void setItem(DOMString key, DOMString value);
  deleter void removeItem(DOMString key);
  void clear();
};

[NoInterfaceObject]
interface WindowSessionStorage {
  readonly attribute Storage sessionStorage;
};
Window implements WindowSessionStorage;

[NoInterfaceObject]
interface WindowLocalStorage {
  readonly attribute Storage localStorage;
};
Window implements WindowLocalStorage;

[Constructor(DOMString type, optional StorageEventInit eventInitDict)]
interface StorageEvent : Event {
  readonly attribute DOMString? key;
  readonly attribute DOMString? oldValue;
  readonly attribute DOMString? newValue;
  readonly attribute DOMString url;
  readonly attribute Storage? storageArea;
};

dictionary StorageEventInit : EventInit {
  DOMString? key;
  DOMString? oldValue;
  DOMString? newValue;
  DOMString url;
  Storage? storageArea;
};

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 EventHandler onbounce;
           attribute EventHandler onfinish;
           attribute EventHandler onstart;

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

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

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

  [TreatNullAs=EmptyString] attribute DOMString marginHeight;
  [TreatNullAs=EmptyString] attribute DOMString marginWidth;
};

partial interface HTMLAnchorElement {
           attribute DOMString coords;
           attribute DOMString charset;
           attribute DOMString name;
           attribute DOMString rev;
           attribute DOMString shape;
};

partial interface HTMLAreaElement {
           attribute boolean noHref;
};

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

};

partial interface HTMLBodyElement {
  [TreatNullAs=EmptyString] attribute DOMString text;
  [TreatNullAs=EmptyString] attribute DOMString link;
  [TreatNullAs=EmptyString] attribute DOMString vLink;
  [TreatNullAs=EmptyString] attribute DOMString aLink;
  [TreatNullAs=EmptyString] attribute DOMString bgColor;
                            attribute DOMString background;
};

partial interface HTMLBRElement {
           attribute DOMString clear;
};

partial interface HTMLTableCaptionElement {
           attribute DOMString align;
};

partial interface HTMLTableColElement {
           attribute DOMString align;
           attribute DOMString ch;
           attribute DOMString chOff;
           attribute DOMString vAlign;
           attribute DOMString width;
};

interface HTMLDirectoryElement : HTMLElement {
           attribute boolean compact;
};

partial interface HTMLDivElement {
           attribute DOMString align;
};

partial interface HTMLDListElement {
           attribute boolean compact;
};

partial interface HTMLEmbedElement {
           attribute DOMString align;
           attribute DOMString name;
};

interface HTMLFontElement : HTMLElement {
  [TreatNullAs=EmptyString] attribute DOMString color;
                            attribute DOMString face;
                            attribute DOMString size;

};

partial interface HTMLHeadingElement {
           attribute DOMString align;
};

partial interface HTMLHRElement {
           attribute DOMString align;
           attribute DOMString color;
           attribute boolean noShade;
           attribute DOMString size;
           attribute DOMString width;
};

partial interface HTMLHtmlElement {
           attribute DOMString version;
};

partial interface HTMLIFrameElement {
           attribute DOMString align;
           attribute DOMString scrolling;
           attribute DOMString frameBorder;
           attribute DOMString longDesc;

  [TreatNullAs=EmptyString] attribute DOMString marginHeight;
  [TreatNullAs=EmptyString] attribute DOMString marginWidth;
};

partial interface HTMLImageElement {
           attribute DOMString name;
           attribute DOMString align;
           attribute unsigned long hspace;
           attribute unsigned long vspace;
           attribute DOMString longDesc;

  [TreatNullAs=EmptyString] attribute DOMString border;
};

partial interface HTMLInputElement {
           attribute DOMString align;
           attribute DOMString useMap;
};

partial interface HTMLLegendElement {
           attribute DOMString align;
};

partial interface HTMLLIElement {
           attribute DOMString type;
};

partial interface HTMLLinkElement {
           attribute DOMString charset;
           attribute DOMString rev;
           attribute DOMString target;
};

partial interface HTMLMenuElement {
           attribute boolean compact;
};

partial interface HTMLMetaElement {
           attribute DOMString scheme;
};

partial interface HTMLObjectElement {
           attribute DOMString align;
           attribute DOMString archive;
           attribute DOMString code;
           attribute boolean declare;
           attribute unsigned long hspace;
           attribute DOMString standby;
           attribute unsigned long vspace;
           attribute DOMString codeBase;
           attribute DOMString codeType;

  [TreatNullAs=EmptyString] attribute DOMString border;
};

partial interface HTMLOListElement {
           attribute boolean compact;
};

partial interface HTMLParagraphElement {
           attribute DOMString align;
};

partial interface HTMLParamElement {
           attribute DOMString type;
           attribute DOMString valueType;
};

partial interface HTMLPreElement {
           attribute long width;
};

partial interface HTMLScriptElement {
           attribute DOMString event;
           attribute DOMString htmlFor;
};

partial interface HTMLTableElement {
           attribute DOMString align;
           attribute DOMString border;
           attribute DOMString frame;
           attribute DOMString rules;
           attribute DOMString summary;
           attribute DOMString width;

  [TreatNullAs=EmptyString] attribute DOMString bgColor;
  [TreatNullAs=EmptyString] attribute DOMString cellPadding;
  [TreatNullAs=EmptyString] attribute DOMString cellSpacing;
};

partial interface HTMLTableSectionElement {
           attribute DOMString align;
           attribute DOMString ch;
           attribute DOMString chOff;
           attribute DOMString vAlign;
};

partial interface HTMLTableCellElement {
           attribute DOMString abbr;
           attribute DOMString align;
           attribute DOMString axis;
           attribute DOMString height;
           attribute DOMString width;

           attribute DOMString ch;
           attribute DOMString chOff;
           attribute boolean noWrap;
           attribute DOMString vAlign;

  [TreatNullAs=EmptyString] attribute DOMString bgColor;
};

partial interface HTMLTableRowElement {
           attribute DOMString align;
           attribute DOMString ch;
           attribute DOMString chOff;
           attribute DOMString vAlign;

  [TreatNullAs=EmptyString] attribute DOMString bgColor;
};

partial interface HTMLUListElement {
           attribute boolean compact;
           attribute DOMString type;
};

partial interface Document {
  [TreatNullAs=EmptyString] attribute DOMString fgColor;
  [TreatNullAs=EmptyString] attribute DOMString linkColor;
  [TreatNullAs=EmptyString] attribute DOMString vlinkColor;
  [TreatNullAs=EmptyString] attribute DOMString alinkColor;
  [TreatNullAs=EmptyString] attribute DOMString bgColor;

  readonly attribute HTMLCollection anchors;
  readonly attribute HTMLCollection applets;

  void clear();

  readonly attribute HTMLAllCollection all;
};

