StreamMessageComposerReplyAttachment class

A composer attachment that previews the message being replied to.

StreamMessageComposerReplyAttachment displays a leading indicator bar, a title (typically the quoted user's name), a subtitle (a preview of the quoted message body), and an optional trailing thumbnail of the quoted attachment. Both labels render on a single line and ellipsize on overflow.

direction selects direction-aware default colors: incoming previews use a neutral surface tint with a chrome indicator, outgoing previews use a brand-tinted background with a brand indicator.

The preview fills the parent's width and is at least 56 tall, growing vertically to fit longer content.

{@tool snippet}

A reply preview for an outgoing message:

StreamMessageComposerReplyAttachment(
  title: Text('Reply to John Doe'),
  subtitle: Text('We had a great time during our holiday.'),
  direction: StreamReplyDirection.outgoing,
  onRemovePressed: () => cancelReply(),
)

{@end-tool}

Theming

StreamMessageComposerReplyAttachment uses StreamMessageComposerReplyAttachmentThemeData for default styling, falling back to direction-aware defaults selected by direction. Per-instance style takes precedence over the inherited theme.

See also:

• StreamMessageComposerReplyAttachmentTheme, for customizing reply previews globally.
• StreamMessageComposerAttachment, the surrounding container.
• StreamReplyDirection, which selects direction-aware defaults.
• DefaultStreamMessageComposerReplyAttachment, the default visual implementation.

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• StreamMessageComposerReplyAttachment

Constructors

StreamMessageComposerReplyAttachment({Key? key, required Widget title, required Widget subtitle, Widget? thumbnail, VoidCallback? onRemovePressed, StreamReplyDirection direction = .incoming, StreamMessageComposerReplyAttachmentThemeData? style})

Creates a reply preview attachment.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

props → StreamMessageComposerReplyAttachmentProps

The properties that configure this reply preview.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build(BuildContext context) → Widget

Describes the part of the user interface represented by this widget.

override

createElement() → StatelessElement

Creates a StatelessElement to manage this widget's location in the tree.

inherited

debugDescribeChildren() → List<DiagnosticsNode>

Returns a list of DiagnosticsNode objects describing this node's children.

inherited

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode

Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.

inherited

toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String

A string representation of this object.

inherited

toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String

Returns a string representation of this node and its descendants.

inherited

toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a one-line detailed description of the object.

inherited

toStringShort() → String

A short, textual description of this widget.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited