NodeTransformerManager<O, BC, BS extends BuildSettings, NT extends NodeTypeTransformer<BaseNode, dynamic, dynamic, BuildSettings>> class abstract

The base class for all node transformers. It holds a registry that maps node types to their relevant transformers.

There are two types of transformers: active and passive.

Passive transformers are transformers that transform their passed nodes into direct widgets and do nothing else.

Conversely, active transformers are transformers that transform their passed nodes into widgets that handle events, different rendering states, and several other mechanics that are not handled by passive transformers and make interfacing with them in the Codelessly editor a much more user-friendly and dynamic experience.

To register your own transformers, use either globalPassiveManager or globalActiveManager depending on the type of transformer you want to register. Then call registerTransformer or registerAllTransformers to register your transformers in each.

This class is extended by ActiveNodeTransformerManager and PassiveNodeTransformerManager. Please refer to each for an in-depth explanation of how they work.

O is the output type, probably a Widget. BC is the context type, probably a BuildContext. BS is the build settings type, probably a WidgetBuildSettings. NT is the node transformer type, probably a NodeWidgetTransformer.

Codegen uses different O, BC, BS, and NT types for its transformers.

Implementers

Constructors

NodeTransformerManager(GetNode getNode)

Properties

getNode → GetNode
final
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

buildWidgetByID(String id, BC context, {required BS settings}) → O
Will convert a T (probably BaseNode) to a K (probably Widget). Managers can do whatever they want here. This is where they normally wrap the widget with interaction for example.
buildWidgetFromNode(BaseNode node, BC context, {required BS settings}) → O
Will convert a BaseNode to an O (probably Widget).
getTransformer<L>() → L
A convenience method that pulls the relevant transformer by its type.
getTransformerByID(String id) → NT
Get a transformer from a given node type key.
getTransformerByNode(BaseNode node) → NT
Get a transformer from a given node's type.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
registerAllTransformers(Map<String, NT> transformers) → void
Registers a map of transformers in the registry.
registerTransformer(String key, NT transformer) → void
Registers a transformer in the registry. The key must match the node BaseNode.type. NT is an instance of the NodeTypeTransformer to register.
toString() → String
A string representation of this object.
inherited

Operators

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