BlocProviderTree class

A Flutter Widget that merges multiple BlocProvider widgets into one widget tree.

BlocProviderTree improves the readability and eliminates the need to nest multiple BlocProviders.

By using BlocProviderTree we can go from:

BlocProvider<BlocA>(
  creator: (_context, _bag) => BlocA(),
  child: BlocProvider<BlocB>(
    creator: (_context, _bag) => BlocB(),
    child: BlocProvider<BlocC>(
      creator: (_context, _bag) => BlocC(),
      child: ChildA(),
    )
  )
)

to:

BlocProviderTree(
  blocProviders: [
    BlocProvider<BlocA>(creator: (_context, _bag) => BlocA()),
    BlocProvider<BlocB>(creator: (_context, _bag) => BlocB()),
    BlocProvider<BlocC>(creator: (_context, _bag) => BlocC()),
  ],
  child: ChildA(),
)

BlocProviderTree converts the BlocProvider list into a tree of nested BlocProvider widgets. As a result, the only advantage of using BlocProviderTree is improved readability due to the reduction in nesting and boilerplate.

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• BlocProviderTree

Constructors

BlocProviderTree({Key? key, required List<BlocProvider<Bloc>> blocProviders, required Widget child})

const

Properties

blocProviders → List<BlocProvider<Bloc>>

The BlocProvider list which is converted into a tree of BlocProvider widgets.

final

child → Widget

The Widget and its descendants which will have access to every BloC provided by blocProviders.

final

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

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}) → 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