public class IlvScrollUpAccelerator extends IlvAccelerator
IlvScrollUpAccelerator is used to allow the user to scroll
up the manager view.
The following code example shows how to use
IlvScrollUpAccelerator in a simple Java application:
// Install the scroll down accelerator
manager.addAccelerator(
new IlvScrollUpAccelerator(KeyEvent.KEY_PRESSED,
KeyEvent.VK_DOWN,
0, true));
All input events are handled by means of interactors or accelerators. Accelerators,
such as IlvScrollUpAccelerator, are subclasses of IlvAccelerator.
Each accelerator listens for a specific key event in the manager. For information on
handling events in a manager, see
Handling Events.
The following code examples show how to handle user events:
| Constructor and Description |
|---|
IlvScrollUpAccelerator(int type,
int keyCode,
char keyChar,
int modifiers,
boolean consumeEvents)
Creates an
IlvScrollUpAccelerator. |
IlvScrollUpAccelerator(int type,
int keyCode,
int modifiers)
Creates an
IlvScrollUpAccelerator. |
IlvScrollUpAccelerator(int type,
int keyCode,
int modifiers,
boolean consumeEvents)
Creates an
IlvScrollUpAccelerator. |
| Modifier and Type | Method and Description |
|---|---|
protected boolean |
handleEvent(IlvManagerView v)
Processes the event.
|
CtrlChar, getEventType, getKeyChar, getKeyCode, getModifier, isConsumeEvents, setConsumeEventspublic IlvScrollUpAccelerator(int type,
int keyCode,
char keyChar,
int modifiers,
boolean consumeEvents)
IlvScrollUpAccelerator.
You can specify the associated key either by a key code or by a key
character. Key codes are useful for function keys while
key characters are more useful for regular characters
'a'...'z','A'...'Z','0'...'9','+','-', etc.
which, depending on the keyboard layout may produce different key codes.
For instance, on a US keyboard, the character '+' has the same key code
as the character '=', while on a German keyboard, the character '+' has
the same key code as the character '*', hence specifying the '+'
character by key code instead of key character might be not suitable.
To indicate that only the key code should be checked, pass
KeyEvent.CHAR_UNDEFINED as key character.
To indicate that only the key character should be checked, pass
KeyEvent.VK_UNDEFINED as key code.type - The type of the AWT event.keyCode - The code associated with the key,
or KeyEvent.VK_UNDEFINED.keyChar - The character associated with the key,
or KeyEvent.CHAR_UNDEFINED.modifiers - The modifiers of the key.consumeEvents - If true, the accelerator handles and
consumes the event, except when the consume flag of the event
is already set to true. If false, the
accelerator ignores the event's consume flag, and handles all
events without changing the consume flag.public IlvScrollUpAccelerator(int type,
int keyCode,
int modifiers,
boolean consumeEvents)
IlvScrollUpAccelerator.type - The type of the AWT event.keyCode - The code associated with the key.modifiers - The modifiers of the key.consumeEvents - If true, the accelerator handles and consumes
the event, except when the consume flag of the event is already set to
true. If false, the accelerator ignores the
event's consume flag, and handles all events without changing the
consume flag.public IlvScrollUpAccelerator(int type,
int keyCode,
int modifiers)
IlvScrollUpAccelerator.type - The type of the AWT event.keyCode - The code associated with the key.modifiers - The modifiers of the key.protected boolean handleEvent(IlvManagerView v)
handleEvent in class IlvAcceleratorv - The manager view.© Copyright Rogue Wave Software, Inc. 1997, 2018. All Rights Reserved.