StreamMessageItemTheme class

Applies a message item theme to descendant message widgets.

Wrap a subtree with StreamMessageItemTheme to override placement-aware styling for message sub-components (bubble, annotation, metadata, replies).

{@tool snippet}

Override bubble colors based on placement:

StreamMessageItemTheme(
  data: StreamMessageItemThemeData(
    backgroundColor: Colors.blue.shade50,
    bubble: StreamMessageBubbleStyle(
      backgroundColor: StreamMessageLayoutProperty.resolveWith((p) {
        final isEnd = p.alignment == StreamMessageAlignment.end;
        return isEnd ? Colors.blue.shade100 : Colors.grey.shade100;
      }),
    ),
  ),
  child: ...,
)

{@end-tool}

Constructors

StreamMessageItemTheme({Key? key, required StreamMessageItemThemeData data, required Widget child}): Creates a message item theme that controls descendant message widgets.
const

Properties

child → Widget: The widget below this widget in the tree.
finalinherited
data → StreamMessageItemThemeData: The message item theme data for descendant widgets.
final
hashCode → int: The hash code for this object.
no setterinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → InheritedElement: Inflates this configuration to a concrete instance.
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
updateShouldNotify(covariant StreamMessageItemTheme oldWidget) → bool: Whether the framework should notify widgets that inherit from this widget.
override
wrap(BuildContext context, Widget child) → Widget: Return a copy of this inherited theme with the specified child.
override

Operators

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

Static Methods

of(BuildContext context) → StreamMessageItemThemeData: Returns the StreamMessageItemThemeData from the current theme context.