WindowBase class abstract

Top-level container for a browser tab or window.

In a web browser, a WindowBase object represents any browser window. This object contains the window's state and its relation to other windows, such as which window opened this window.

Note: This class represents any window, while Window is used to access the properties and content of the current window or tab.

See also

Other resources

Implemented types




closed bool?
Indicates whether this window has been closed.
no setter
hashCode int
The hash code for this object.
no setterinherited
history HistoryBase
The current session history for this window.
no setter
location LocationBase
The current location of this window.
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
opener WindowBase?
A reference to the window that opened this one.
no setter
parent WindowBase?
A reference to the parent of this window.
no setter
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
top WindowBase?
A reference to the topmost window in the window hierarchy.
no setter


addEventListener(String type, EventListener? listener, [bool? useCapture]) → void
close() → void
Closes the window.
dispatchEvent(Event event) bool
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
postMessage(dynamic message, String targetOrigin, [List<MessagePort>? messagePorts]) → void
Sends a cross-origin message.
removeEventListener(String type, EventListener? listener, [bool? useCapture]) → void
toString() String
A string representation of this object.


operator ==(Object other) bool
The equality operator.