Package com.vaadin.flow.component

Class ComponentEvent<T extends Component>

java.lang.Object
java.util.EventObject
com.vaadin.flow.component.ComponentEvent<T>
Type Parameters:
T - the event source type
All Implemented Interfaces:
Serializable
Direct Known Subclasses:
AbstractAttachDetachEvent, AbstractField.ComponentValueChangeEvent, AbstractLogin.ForgotPasswordEvent, AbstractLogin.LoginEvent, Accordion.OpenedChangeEvent, AllFinishedEvent, BlurNotifier.BlurEvent, CellFocusEvent, ChartAddSeriesEvent, ChartAfterPrintEvent, ChartBeforePrintEvent, ChartClickEvent, ChartDrillupAllEvent, ChartDrillupEvent, ChartLoadEvent, ChartRedrawEvent, ChartSelectionEvent, ClickEvent, CollapseEvent, ColumnReorderEvent, ColumnResizeEvent, ComboBoxBase.CustomValueSetEvent, CompositionEvent, ConfirmDialog.CancelEvent, ConfirmDialog.ConfirmEvent, ConfirmDialog.RejectEvent, ContextMenuBase.OpenedChangeEvent, Crud.CancelEvent, Crud.DeleteEvent, Crud.EditEvent, Crud.NewEvent, Crud.SaveEvent, CrudI18nUpdatedEvent, DatePicker.InvalidChangeEvent, DatePicker.OpenedChangeEvent, Details.OpenedChangeEvent, Dialog.DialogCloseActionEvent, Dialog.DialogResizeEvent, Dialog.OpenedChangeEvent, DragEndEvent, DragStartEvent, DrilldownEvent, DropEvent, ExpandEvent, FileRejectedEvent, FinishedEvent, FocusNotifier.FocusEvent, GridContextMenu.GridContextMenuItemClickEvent, GridDragEndEvent, GridDragStartEvent, GridDropEvent, GridPro.CellEditStartedEvent, GridPro.ItemPropertyChangedEvent, HasClientValidation.ClientValidatedEvent, IdentifierProviderChangeEvent, InputEvent, ItemCountChangeEvent, KeyboardEvent, MapClickEvent, MapFeatureClickEvent, MapFeatureDropEvent, MapViewMoveEndEvent, MessageInput.SubmitEvent, NativeDetails.ToggleEvent, Notification.OpenedChangeEvent, PointClickEvent, PointLegendItemClickEvent, PointMouseOutEvent, PointMouseOverEvent, PointRemoveEvent, PointSelectEvent, PointUnselectEvent, PointUpdateEvent, PollEvent, ProgressUpdateEvent, Select.InvalidChangeEvent, Select.OpenedChangeEvent, SeriesAfterAnimateEvent, SeriesCheckboxClickEvent, SeriesClickEvent, SeriesHideEvent, SeriesLegendItemClickEvent, SeriesMouseOutEvent, SeriesMouseOverEvent, SeriesShowEvent, SortEvent, SplitLayout.SplitterDragendEvent, StartedEvent, Tabs.SelectedChangeEvent, TabSheet.SelectedChangeEvent, TimePicker.InvalidChangeEvent, WebComponentUI.WebComponentConnectEvent, XAxesExtremesSetEvent, YAxesExtremesSetEvent
public class ComponentEvent<T extends Component> extends EventObject
An event whose source is a Component.

Typically used together with ComponentEventBus.

Since:
1.0
Author:
Vaadin Ltd
See Also:

  • Constructor Details

    • ComponentEvent

      public ComponentEvent(T source, boolean fromClient)
      Creates a new event using the given source and indicator whether the event originated from the client side or the server side.
      Parameters:
      source - the source component
      fromClient - true if the event originated from the client side, false otherwise

  • Method Details

    • getSource

      public T getSource()
      Overrides:
      getSource in class EventObject

    • isFromClient

      public boolean isFromClient()
      Checks if this event originated from the client side.
      Returns:
      true if the event originated from the client side, false otherwise

    • unregisterListener

      public void unregisterListener()
      Unregisters the event listener currently being invoked.

      This method can only be called from within an event listener. Calling it will remove the current event listener so no further events are passed to it.