OneFrameImageStreamCompleter class

Manages the loading of dart:ui.Image objects for static ImageStreams (those with only one frame).



OneFrameImageStreamCompleter(Future<ImageInfo> image, {InformationCollector informationCollector})
Creates a manager for one-frame ImageStreams. [...]


debugLabel String
A string identifying the source of the underlying image.
read / write, inherited
hashCode int
The hash code for this object. [...]
read-only, inherited
hasListeners bool
Whether any listeners are currently registered. [...]
@protected, @visibleForTesting, read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited


addListener(ImageStreamListener listener) → void
Adds a listener callback that is called whenever a new concrete ImageInfo object is available or an error is reported. If a concrete image is already available, or if an error has been already reported, this object will notify the listener synchronously. [...]
addOnLastListenerRemovedCallback(VoidCallback callback) → void
Adds a callback to call when removeListener results in an empty list of listeners. [...]
debugFillProperties(DiagnosticPropertiesBuilder description) → void
Accumulates a list of strings describing the object's state. Subclasses should override this to have their information included in toString.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
removeListener(ImageStreamListener listener) → void
Stops the specified listener from receiving image stream events. [...]
removeOnLastListenerRemovedCallback(VoidCallback callback) → void
Removes a callback previously supplied to addOnLastListenerRemovedCallback.
reportError({DiagnosticsNode context, dynamic exception, StackTrace stack, InformationCollector informationCollector, bool silent: false}) → void
Calls all the registered error listeners to notify them of an error that occurred while resolving the image. [...]
@protected, inherited
reportImageChunkEvent(ImageChunkEvent event) → void
Calls all the registered ImageChunkListeners (listeners with an ImageStreamListener.onChunk specified) to notify them of a new ImageChunkEvent.
@protected, inherited
setImage(ImageInfo image) → void
Calls all the registered listeners to notify them of a new image.
@protected, inherited
toDiagnosticsNode({String name, DiagnosticsTreeStyle style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep. [...]
toString({DiagnosticLevel minLevel:}) String
Returns a string representation of this object.
toStringShort() String
A brief description of this object, usually just the runtimeType and the hashCode. [...]


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