Package com.vaadin.flow.component.internal

Class EventDataCache

java.lang.Object

com.vaadin.flow.component.internal.EventDataCache

All Implemented Interfaces:

Serializable

public class EventDataCache
extends Object
implements Serializable

Cache for tracking global information related to ComponentEvent types.

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

Since:

1.0

Author:

Vaadin Ltd

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
EventDataCache()

Method Summary

Modifier and Type	Method	Description
Optional<LinkedHashMap<String,Class<?>>>	getDataExpressions(Class<? extends ComponentEvent<?>> eventType)	Gets the cached data expressions for the given event type.
<T extends ComponentEvent<?>> Optional<Constructor<T>>	getEventConstructor(Class<T> eventType)	Gets the cached DOM event constructor for the given event type.
LinkedHashMap<String,Class<?>>	setDataExpressions(Class<? extends ComponentEvent<?>> eventType, LinkedHashMap<String,Class<?>> expressions)	Stores the given data expressions for the given event type in the cache.
<T extends ComponentEvent<?>> Constructor<T>	setEventConstructor(Class<T> eventType, Constructor<T> constructor)	Stores the given DOM event constructor for the given event type in the cache.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

EventDataCache

public EventDataCache()

Method Details

getDataExpressions

public Optional<LinkedHashMap<String,Class<?>>> getDataExpressions(Class<? extends ComponentEvent<?>> eventType)

Gets the cached data expressions for the given event type.

Parameters:

eventType - the component event type

Returns:

an optional containing the data expressions or an empty optional if no data expressions have been cached for the given event type

setDataExpressions

public LinkedHashMap<String,Class<?>> setDataExpressions(Class<? extends ComponentEvent<?>> eventType,
 LinkedHashMap<String,Class<?>> expressions)

Stores the given data expressions for the given event type in the cache.

Parameters:

eventType - the component event type

expressions - the data expressions to store

Returns:

the stored data expressions

getEventConstructor

public <T extends ComponentEvent<?>>
Optional<Constructor<T>> getEventConstructor(Class<T> eventType)

Gets the cached DOM event constructor for the given event type.

Type Parameters:

T - the component event type

Parameters:

eventType - the component event type

Returns:

an optional containing the DOM event constructor or an empty optional if no DOM event constructor has been cached for the given event type

setEventConstructor

public <T extends ComponentEvent<?>> Constructor<T> setEventConstructor(Class<T> eventType,
 Constructor<T> constructor)

Stores the given DOM event constructor for the given event type in the cache.

Type Parameters:

T - the event type

Parameters:

eventType - the component event type

constructor - the DOM event constructor to store

Returns:

the stored DOM event constructor