com.vaadin.flow.internal

Interface NodeOwner

All Superinterfaces:

Serializable

All Known Implementing Classes:

NullOwner, StateTree

public interface NodeOwner
extends Serializable

Abstract root of a state node tree. A node always belongs to one specific owner. The owner keeps track of metadata for its nodes.

Since:

1.0

Author:

Vaadin Ltd

Method Summary

Modifier and Type	Method and Description
boolean	hasNode(StateNode node) Check if given node is registered to this node owner.
void	markAsDirty(StateNode node) Marks a node owned by this instance as dirty.
int	register(StateNode node) Registers a node with this node owner.
void	unregister(StateNode node) Unregisters a node from this owner.

Method Detail

register

int register(StateNode node)

Registers a node with this node owner. The new node should already be set to be owned by this instance.

Parameters:

node - the node to register

Returns:

the id of the registered node

unregister

void unregister(StateNode node)

Unregisters a node from this owner. This must be done before the node is set to not be owned by this instance.

Parameters:

node - the node to unregister

markAsDirty

void markAsDirty(StateNode node)

Marks a node owned by this instance as dirty. Dirty nodes are collected from an owner using StateTree.collectDirtyNodes().

Parameters:

node - the node to be marked as dirty

hasNode

boolean hasNode(StateNode node)

Check if given node is registered to this node owner.

Parameters:

node - node to check registration status for

Returns:

true if node is registered