Window class

Top-level container for the current browser tab or window.

In a web browser, each window has a Window object, but within the context of a script, this object represents only the current window. Each other window, tab, and iframe has its own Window object.

Each window contains a Document object, which contains all of the window's content.

Use the top-level window object to access the current window. For example:

// Draw a scene when the window repaints.
drawScene(num delta) {...}
window.animationFrame.then(drawScene);.

// Write to the console.
window.console.log('Jinkies!');
window.console.error('Jeepers!');

Note: This class represents only the current window, while WindowBase is a representation of any window, including other tabs, windows, and frames.

Other resources

DOM Window from MDN.
Window from the W3C.

Inheritance

Implemented types

Properties

animationFrame → Future<num>: Returns a Future that completes just before the window is about to repaint so the user can draw an animation frame.
no setter
animationWorklet → _Worklet?: no setter
applicationCache → ApplicationCache?: The application cache for this window.
no setter
audioWorklet → _Worklet?: no setter
caches → CacheStorage?: no setter
closed → bool?: Indicates whether this window has been closed.
no setteroverride
console → Console: The debugging console for this window.
no setter
cookieStore → CookieStore?: no setter
crypto → Crypto?: Entrypoint for the browser's cryptographic functions.
no setter
customElements → CustomElementRegistry?: no setter
defaultStatus ↔ String?: Deprecated.
getter/setter pair
defaultstatus ↔ String?: Deprecated.
getter/setter pair
devicePixelRatio → num: The ratio between physical pixels and logical CSS pixels.
no setter
document → Document: The newest document in this window.
no setter
external → External?: no setter
hashCode → int: The hash code for this object.
no setterinherited
history → History: The current session history for this window's newest document.
no setteroverride
indexedDB → dynamic: Gets an instance of the Indexed DB factory to being using Indexed DB.
no setter
innerHeight → int?: The height of the viewport including scrollbars.
no setter
innerWidth → int?: The width of the viewport including scrollbars.
no setter
isSecureContext → bool?: no setter
localStorage → Storage: Storage for this window that persists across sessions.
no setter
location ↔ Location: The current location of this window.
getter/setter pairoverride-getter
locationbar → BarProp?: This window's location bar, which displays the URL.
no setter
menubar → BarProp?: This window's menu bar, which displays menu commands.
no setter
name ↔ String?: The name of this window.
getter/setter pair
navigator → Navigator: The user agent accessing this window.
no setter
offscreenBuffering → bool?: Whether objects are drawn offscreen before being displayed.
no setter
on → Events: This is an ease-of-use accessor for event streams which should only be used when an explicit accessor is not available.
no setterinherited
onAbort → Stream<Event>: Stream of abort events handled by this Window.
no setteroverride
onAnimationEnd → Stream<AnimationEvent>: Stream of animationend events handled by this Window.
no setter
onAnimationIteration → Stream<AnimationEvent>: Stream of animationiteration events handled by this Window.
no setter
onAnimationStart → Stream<AnimationEvent>: Stream of animationstart events handled by this Window.
no setter
onBeforeUnload → Stream<Event>: Stream of beforeunload events handled by this Window.
no setter
onBlur → Stream<Event>: Stream of blur events handled by this Window.
no setteroverride
onCanPlay → Stream<Event>: no setteroverride
onCanPlayThrough → Stream<Event>: no setteroverride
onChange → Stream<Event>: Stream of change events handled by this Window.
no setteroverride
onClick → Stream<MouseEvent>: Stream of click events handled by this Window.
no setteroverride
onContentLoaded → Stream<Event>: Stream of contentloaded events handled by this Window.
no setter
onContextMenu → Stream<MouseEvent>: Stream of contextmenu events handled by this Window.
no setteroverride
onDeviceMotion → Stream<DeviceMotionEvent>: Stream of devicemotion events handled by this Window.
no setter
onDeviceOrientation → Stream<DeviceOrientationEvent>: Stream of deviceorientation events handled by this Window.
no setter
onDoubleClick → Stream<Event>: Stream of doubleclick events handled by this Window.
no setteroverride
onDrag → Stream<MouseEvent>: Stream of drag events handled by this Window.
no setteroverride
onDragEnd → Stream<MouseEvent>: Stream of dragend events handled by this Window.
no setteroverride
onDragEnter → Stream<MouseEvent>: Stream of dragenter events handled by this Window.
no setteroverride
onDragLeave → Stream<MouseEvent>: Stream of dragleave events handled by this Window.
no setteroverride
onDragOver → Stream<MouseEvent>: Stream of dragover events handled by this Window.
no setteroverride
onDragStart → Stream<MouseEvent>: Stream of dragstart events handled by this Window.
no setteroverride
onDrop → Stream<MouseEvent>: Stream of drop events handled by this Window.
no setteroverride
onDurationChange → Stream<Event>: no setteroverride
onEmptied → Stream<Event>: no setteroverride
onEnded → Stream<Event>: no setteroverride
onError → Stream<Event>: Stream of error events handled by this Window.
no setteroverride
onFocus → Stream<Event>: Stream of focus events handled by this Window.
no setteroverride
onHashChange → Stream<Event>: Stream of hashchange events handled by this Window.
no setteroverride
onInput → Stream<Event>: Stream of input events handled by this Window.
no setteroverride
onInvalid → Stream<Event>: Stream of invalid events handled by this Window.
no setteroverride
onKeyDown → Stream<KeyboardEvent>: Stream of keydown events handled by this Window.
no setteroverride
onKeyPress → Stream<KeyboardEvent>: Stream of keypress events handled by this Window.
no setteroverride
onKeyUp → Stream<KeyboardEvent>: Stream of keyup events handled by this Window.
no setteroverride
onLoad → Stream<Event>: Stream of load events handled by this Window.
no setteroverride
onLoadedData → Stream<Event>: no setteroverride
onLoadedMetadata → Stream<Event>: no setteroverride
onLoadStart → Stream<Event>: no setter
onMessage → Stream<MessageEvent>: Stream of message events handled by this Window.
no setteroverride
onMouseDown → Stream<MouseEvent>: Stream of mousedown events handled by this Window.
no setteroverride
onMouseEnter → Stream<MouseEvent>: Stream of mouseenter events handled by this Window.
no setteroverride
onMouseLeave → Stream<MouseEvent>: Stream of mouseleave events handled by this Window.
no setteroverride
onMouseMove → Stream<MouseEvent>: Stream of mousemove events handled by this Window.
no setteroverride
onMouseOut → Stream<MouseEvent>: Stream of mouseout events handled by this Window.
no setteroverride
onMouseOver → Stream<MouseEvent>: Stream of mouseover events handled by this Window.
no setteroverride
onMouseUp → Stream<MouseEvent>: Stream of mouseup events handled by this Window.
no setteroverride
onMouseWheel → Stream<WheelEvent>: Stream of mousewheel events handled by this Window.
no setteroverride
onOffline → Stream<Event>: Stream of offline events handled by this Window.
no setteroverride
onOnline → Stream<Event>: Stream of online events handled by this Window.
no setteroverride
onPageHide → Stream<Event>: Stream of pagehide events handled by this Window.
no setter
onPageShow → Stream<Event>: Stream of pageshow events handled by this Window.
no setter
onPause → Stream<Event>: no setteroverride
onPlay → Stream<Event>: no setteroverride
onPlaying → Stream<Event>: no setteroverride
onPopState → Stream<PopStateEvent>: Stream of popstate events handled by this Window.
no setteroverride
onProgress → Stream<Event>: no setter
onRateChange → Stream<Event>: no setteroverride
onReset → Stream<Event>: Stream of reset events handled by this Window.
no setteroverride
onResize → Stream<Event>: Stream of resize events handled by this Window.
no setteroverride
onScroll → Stream<Event>: Stream of scroll events handled by this Window.
no setteroverride
onSearch → Stream<Event>: Stream of search events handled by this Window.
no setter
onSeeked → Stream<Event>: no setteroverride
onSeeking → Stream<Event>: no setteroverride
onSelect → Stream<Event>: Stream of select events handled by this Window.
no setteroverride
onStalled → Stream<Event>: no setteroverride
onStorage → Stream<StorageEvent>: Stream of storage events handled by this Window.
no setteroverride
onSubmit → Stream<Event>: Stream of submit events handled by this Window.
no setteroverride
onSuspend → Stream<Event>: no setteroverride
onTimeUpdate → Stream<Event>: no setteroverride
onTouchCancel → Stream<TouchEvent>: Stream of touchcancel events handled by this Window.
no setteroverride
onTouchEnd → Stream<TouchEvent>: Stream of touchend events handled by this Window.
no setteroverride
onTouchMove → Stream<TouchEvent>: Stream of touchmove events handled by this Window.
no setteroverride
onTouchStart → Stream<TouchEvent>: Stream of touchstart events handled by this Window.
no setteroverride
onTransitionEnd → Stream<TransitionEvent>: Stream of transitionend events handled by this Window.
no setter
onUnload → Stream<Event>: Stream of unload events handled by this Window.
no setteroverride
onVolumeChange → Stream<Event>: no setteroverride
onWaiting → Stream<Event>: no setteroverride
onWheel → Stream<WheelEvent>: Stream of wheel events handled by this Window.
no setteroverride
opener ↔ WindowBase?: A reference to the window that opened this one.
getter/setter pairoverride-getter
orientation → int?: no setter
origin → String?: no setter
outerHeight → int: The height of this window including all user interface elements.
no setter
outerWidth → int: The width of the window including all user interface elements.
no setter
pageXOffset → int: no setter
pageYOffset → int: no setter
parent → WindowBase?: A reference to the parent of this window.
no setteroverride
performance → Performance: Timing and navigation data for this window.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
screen → Screen?: Information about the screen displaying this window.
no setter
screenLeft → int?: The distance from the left side of the screen to the left side of this window.
no setter
screenTop → int?: The distance from the top of the screen to the top of this window.
no setter
screenX → int?: The distance from the left side of the screen to the mouse pointer.
no setter
screenY → int?: The distance from the top of the screen to the mouse pointer.
no setter
scrollbars → BarProp?: This window's scroll bars.
no setter
scrollX → int: The distance this window has been scrolled horizontally.
no setter
scrollY → int: The distance this window has been scrolled vertically.
no setter
self → WindowBase?: The current window.
no setter
sessionStorage → Storage: Storage for this window that is cleared when this session ends.
no setter
speechSynthesis → SpeechSynthesis?: Access to speech synthesis in the browser.
no setter
status ↔ String?: Deprecated.
getter/setter pair
statusbar → BarProp?: This window's status bar.
no setter
styleMedia → StyleMedia?: Access to CSS media queries.
no setter
toolbar → BarProp?: This window's tool bar.
no setter
top → WindowBase?: A reference to the topmost window in the window hierarchy.
no setteroverride
visualViewport → VisualViewport?: no setter
window → WindowBase?: The current window.
no setter

Methods

addEventListener(String type, EventListener? listener, [bool? useCapture]) → void: inherited
alert([String? message]) → void: Displays a modal alert to the user.
atob(String atob) → String: override
btoa(String btoa) → String: override
cancelAnimationFrame(int id) → void: Cancels an animation frame request.
cancelIdleCallback(int handle) → void
close() → void: Closes the window.
override
confirm([String? message]) → bool: Displays a modal OK/Cancel prompt to the user.
dispatchEvent(Event event) → bool: inherited
fetch(dynamic input, [Map? init]) → Future
find(String? string, bool? caseSensitive, bool? backwards, bool? wrap, bool? wholeWord, bool? searchInFrames, bool? showDialog) → bool: Finds text in this window.
getComputedStyleMap(Element element, String? pseudoElement) → StylePropertyMapReadonly
getMatchedCssRules(Element? element, String? pseudoElement) → List<CssRule>: Returns all CSS rules that apply to the element's pseudo-element.
getSelection() → Selection?: Returns the currently selected text.
matchMedia(String query) → MediaQueryList: Returns a list of media queries for the given query string.
moveBy(int x, int y) → void: Moves this window.
moveTo(Point<num> p) → void: Moves this window to a specific position.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
open(String url, String name, [String? options]) → WindowBase: Opens a new window.
postMessage(dynamic message, String targetOrigin, [List<Object>? transfer]) → void: Sends a cross-origin message.
override
print() → void: Opens the print dialog for this window.
removeEventListener(String type, EventListener? listener, [bool? useCapture]) → void: inherited
requestAnimationFrame(FrameRequestCallback callback) → int: Called to draw an animation frame and then request the window to repaint after callback has finished (creating the animation).
requestFileSystem(int size, {bool persistent = false}) → Future<FileSystem>: Access a sandboxed file system of size bytes.
requestIdleCallback(IdleRequestCallback callback, [Map? options]) → int
resizeBy(int x, int y) → void: Resizes this window by an offset.
resizeTo(int x, int y) → void: Resizes this window to a specific width and height.
resolveLocalFileSystemUrl(String url) → Future<Entry>: Asynchronously retrieves a local filesystem entry.
scroll([dynamic options_OR_x, dynamic y, Map? scrollOptions]) → void: Scrolls the page horizontally and vertically to a specific point.
scrollBy([dynamic options_OR_x, dynamic y, Map? scrollOptions]) → void: Scrolls the page horizontally and vertically by an offset.
scrollTo([dynamic options_OR_x, dynamic y, Map? scrollOptions]) → void: Scrolls the page horizontally and vertically to a specific point.
stop() → void: Stops the window from loading.
toString() → String: A string representation of this object.
inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Properties

supportsPointConversions → bool: convertPointFromNodeToPage and convertPointFromPageToNode are removed. see http://dev.w3.org/csswg/cssom-view/#geometry
no setter

Constants

animationEndEvent → const EventStreamProvider<AnimationEvent>: Static factory designed to expose animationend events to event handlers that are not necessarily instances of Window.
animationIterationEvent → const EventStreamProvider<AnimationEvent>: Static factory designed to expose animationiteration events to event handlers that are not necessarily instances of Window.
animationStartEvent → const EventStreamProvider<AnimationEvent>: Static factory designed to expose animationstart events to event handlers that are not necessarily instances of Window.
beforeUnloadEvent → const EventStreamProvider<BeforeUnloadEvent>: Static factory designed to expose beforeunload events to event handlers that are not necessarily instances of Window.
contentLoadedEvent → const EventStreamProvider<Event>: Static factory designed to expose contentloaded events to event handlers that are not necessarily instances of Window.
deviceMotionEvent → const EventStreamProvider<DeviceMotionEvent>: Static factory designed to expose devicemotion events to event handlers that are not necessarily instances of Window.
deviceOrientationEvent → const EventStreamProvider<DeviceOrientationEvent>: Static factory designed to expose deviceorientation events to event handlers that are not necessarily instances of Window.
hashChangeEvent → const EventStreamProvider<Event>: Static factory designed to expose hashchange events to event handlers that are not necessarily instances of Window.
loadStartEvent → const EventStreamProvider<Event>
messageEvent → const EventStreamProvider<MessageEvent>: Static factory designed to expose message events to event handlers that are not necessarily instances of Window.
offlineEvent → const EventStreamProvider<Event>: Static factory designed to expose offline events to event handlers that are not necessarily instances of Window.
onlineEvent → const EventStreamProvider<Event>: Static factory designed to expose online events to event handlers that are not necessarily instances of Window.
pageHideEvent → const EventStreamProvider<Event>: Static factory designed to expose pagehide events to event handlers that are not necessarily instances of Window.
pageShowEvent → const EventStreamProvider<Event>: Static factory designed to expose pageshow events to event handlers that are not necessarily instances of Window.
PERSISTENT → const int: Indicates that file system data cannot be cleared unless given user permission.
popStateEvent → const EventStreamProvider<PopStateEvent>: Static factory designed to expose popstate events to event handlers that are not necessarily instances of Window.
progressEvent → const EventStreamProvider<Event>
storageEvent → const EventStreamProvider<StorageEvent>: Static factory designed to expose storage events to event handlers that are not necessarily instances of Window.
TEMPORARY → const int: Indicates that file system data can be cleared at any time.
unloadEvent → const EventStreamProvider<Event>: Static factory designed to expose unload events to event handlers that are not necessarily instances of Window.