com.google.gwt.user.client

## Interface EventPreview

- All Known Implementing Classes:
    DecoratedPopupPanel, DialogBox, LoggingPopup, PopupPanel

  Deprecated.
  replaced by `Event.NativePreviewHandler`

      @Deprecated
      public interface EventPreview

  A listener interface for previewing browser events.
  See Also:
    `DOM.addEventPreview(EventPreview)`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `onEventPreview(Event event)` Deprecated. replaced by `Event.NativePreviewHandler.onPreviewNativeEvent(com.google.gwt.user.client.Event.NativePreviewEvent)`

- - ### Method Detail

    - #### onEventPreview

          @Deprecated
          boolean onEventPreview(Event event)

      Deprecated. replaced by `Event.NativePreviewHandler.onPreviewNativeEvent(com.google.gwt.user.client.Event.NativePreviewEvent)`
      Called when a browser event occurs and this event preview is on top of the preview stack.
      Parameters:
        `event` - the browser event
      Returns:
        `false` to cancel the event
      See Also:
        `DOM.addEventPreview(EventPreview)`