NodeOwner (Vaadin Platform (vaadin-platform-javadoc) 23.3.2 API)

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.
For internal use only. May be renamed or removed in a future release.

Since:

1.0

Author:

Vaadin Ltd

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	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