ConditionalParentBuilder class

A widget that allows developers to conditionally wrap the child widget with a parent widget.

In the following real-world example, we conditionally wrap the child widget tree with a context menu if the message is not deleted:

ConditionalParentBuilder(
  builder: (context, child) {
    if (!widget.message.isDeleted) {
      return ContextMenuArea(
        builder: (context) => buildContextMenu(),
        child: child,
      );
    } else {
      return child;
    }
  },
  child: Material(...),
),

This example can be found in the stream_chat_flutter source code under src/message_widget/message_widget.dart.

Inheritance

Constructors

ConditionalParentBuilder({Key? key, required ParentBuilder builder, required Widget child})
A widget that allows developers to conditionally wrap the child widget with a parent widget.
const

Properties

builder → ParentBuilder
A function that provides the BuildContext and the child widget.
final
child → Widget
The child widget to build.
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

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}) → 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