MapPropertyChangeEvent (Flow Client 23.6-SNAPSHOT API)

java.lang.Object
- com.vaadin.client.flow.reactive.ReactiveValueChangeEvent
- - com.vaadin.client.flow.nodefeature.MapPropertyChangeEvent

```
public class MapPropertyChangeEvent
extends ReactiveValueChangeEvent
```
Event fired when the value of a map property changes.

Since:

1.0

Author:

Vaadin Ltd

Constructor Summary

Constructors
Constructor	Description
`MapPropertyChangeEvent(MapProperty source, Object oldValue, Object newValue)`	Creates a new map property change event.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`getNewValue()`	Gets the new property value.
`Object`	`getOldValue()`	Gets the old property value.
`MapProperty`	`getSource()`	Gets the reactive value from which this event originates.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MapPropertyChangeEvent
```
public MapPropertyChangeEvent(MapProperty source,
                              Object oldValue,
                              Object newValue)
```
    Creates a new map property change event.
    
    Parameters:
    
    source - the changed map property
    
    oldValue - the old value
    
    newValue - the new value
- Method Detail
  - getOldValue
```
public Object getOldValue()
```
    Gets the old property value.
    
    Returns:
    
    the old value
  - getNewValue
```
public Object getNewValue()
```
    Gets the new property value.
    
    Returns:
    
    the new value
  - getSource
```
public MapProperty getSource()
```
    Description copied from class: ReactiveValueChangeEvent
    
    Gets the reactive value from which this event originates.
    
    Overrides:
    
    getSource in class ReactiveValueChangeEvent
    
    Returns:
    
    the event source