Package com.google.gwt.user.client.ui

Interface HasKeyPreview

@Deprecated public interface HasKeyPreview
Deprecated.
This interface is no longer implemented by any GWT library. Use Event.addNativePreviewHandler(com.google.gwt.user.client.Event.NativePreviewHandler) instead.
A class that implements this interface receives a preview of keyboard events before they are passed to the focused widget.
See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    onKeyDownPreview(char key, int modifiers)
    Deprecated.
    Called when a key-down event is received.
    boolean
    onKeyPressPreview(char key, int modifiers)
    Deprecated.
    Called when a key-press event is received.
    boolean
    onKeyUpPreview(char key, int modifiers)
    Deprecated.
    Called when a key-up event is received.

  • Method Details

    • onKeyDownPreview

      boolean onKeyDownPreview(char key, int modifiers)
      Deprecated.
      Called when a key-down event is received.
      Parameters:
      key - the physical key that was depressed. Constants for this value are defined in this interface with the KEYCODE prefix.
      modifiers - the modifier keys pressed at when the event occurred. This value is a combination of the bits defined by KeyboardListener.MODIFIER_SHIFT, KeyboardListener.MODIFIER_CTRL, and KeyboardListener.MODIFIER_ALT.

    • onKeyPressPreview

      boolean onKeyPressPreview(char key, int modifiers)
      Deprecated.
      Called when a key-press event is received.
      Parameters:
      key - the Unicode character that was generated by the keyboard action.
      modifiers - the modifier keys pressed at when the event occurred. This value is a combination of the bits defined by KeyboardListener.MODIFIER_SHIFT, KeyboardListener.MODIFIER_CTRL, and KeyboardListener.MODIFIER_ALT.

    • onKeyUpPreview

      boolean onKeyUpPreview(char key, int modifiers)
      Deprecated.
      Called when a key-up event is received.
      Parameters:
      key - the physical key that was released. Constants for this value are defined in this interface with the KEYCODE prefix.
      modifiers - the modifier keys pressed at when the event occurred. This value is a combination of the bits defined by KeyboardListener.MODIFIER_SHIFT, KeyboardListener.MODIFIER_CTRL, and KeyboardListener.MODIFIER_ALT.