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