## com.google.gwt.user.client.ui
Class KeyboardListenerCollection

    java.lang.Object
      java.util.AbstractCollection<E>
          java.util.AbstractList<E>
              java.util.ArrayList<KeyboardListener>
                  com.google.gwt.user.client.ui.KeyboardListenerCollection

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<KeyboardListener>, java.util.Collection<KeyboardListener>, java.util.List<KeyboardListener>, java.util.RandomAccess

Direct Known Subclasses:
  DelegatingKeyboardListenerCollection

    public class KeyboardListenerCollection

extends java.util.ArrayList<KeyboardListener>

A helper class for implementers of the SourcesKeyboardEvents interface. This subclass of `ArrayList` assumes that all objects added to it will be of type `KeyboardListener`.

See Also:
  Serialized Form

Field Summary

Fields inherited from class java.util.AbstractList
`modCount`

Constructor Summary
`KeyboardListenerCollection()`

Method Summary
`void` `fireKeyboardEvent(Widget sender, Event event)` Automatically fires the appropriate keyboard event to all listeners.
`void` `fireKeyDown(Widget sender, char keyCode, int modifiers)` Fires a keyDown event to all listeners.
`void` `fireKeyPress(Widget sender, char key, int modifiers)` Fires a keyDown event to all listeners.
`void` `fireKeyUp(Widget sender, char keyCode, int modifiers)` Fires a keyDown event to all listeners.
`static int` `getKeyboardModifiers(Event event)` Gets the keyboard modifiers associated with a DOMEvent.

Methods inherited from class java.util.ArrayList
`add, add, addAll, addAll, clear, clone, contains, ensureCapacity, get, indexOf, isEmpty, lastIndexOf, remove, remove, removeRange, set, size, toArray, toArray, trimToSize`

Methods inherited from class java.util.AbstractList
`equals, hashCode, iterator, listIterator, listIterator, subList`

Methods inherited from class java.util.AbstractCollection
`containsAll, removeAll, retainAll, toString`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Methods inherited from interface java.util.List
`containsAll, equals, hashCode, iterator, listIterator, listIterator, removeAll, retainAll, subList`

Constructor Detail

### KeyboardListenerCollection

    public KeyboardListenerCollection()

Method Detail

### getKeyboardModifiers

    public static int getKeyboardModifiers(Event event)

  Gets the keyboard modifiers associated with a DOMEvent.

  Parameters:
    `event` - the event.
  Returns:
    the modifiers as defined in `KeyboardListener`.

### fireKeyboardEvent

    public void fireKeyboardEvent(Widget sender,
                                  Event event)

  Automatically fires the appropriate keyboard event to all listeners. If the given event is not a keyboard event, no action will be performed.

  Parameters:
    `sender` - the widget sending the event.
    `event` - the Event received by the widget.

### fireKeyDown

    public void fireKeyDown(Widget sender,
                            char keyCode,
                            int modifiers)

  Fires a keyDown event to all listeners.

  Parameters:
    `sender` - the widget sending the event.
    `keyCode` - the keyCode to send with the event.
    `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`.

### fireKeyPress

    public void fireKeyPress(Widget sender,
                             char key,
                             int modifiers)

  Fires a keyDown event to all listeners.

  Parameters:
    `sender` - the widget sending the event.
    `key` - the key to send with the event.
    `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`.

### fireKeyUp

    public void fireKeyUp(Widget sender,
                          char keyCode,
                          int modifiers)

  Fires a keyDown event to all listeners.

  Parameters:
    `sender` - the widget sending the event.
    `keyCode` - the keyCode to send with the event.
    `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`.