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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package javax.sound.midi;
import java.util.EventListener;
/**
* The <code>ControllerEventListener</code> interface should be implemented
* by classes whose instances need to be notified when a <code>Sequencer</code>
* has processed a requested type of MIDI control-change event.
* To register a <code>ControllerEventListener</code> object to receive such
* notifications, invoke the
* {@link Sequencer#addControllerEventListener(ControllerEventListener, int[])
* addControllerEventListener} method of <code>Sequencer</code>,
* specifying the types of MIDI controllers about which you are interested in
* getting control-change notifications.
*
* @see MidiChannel#controlChange(int, int)
*
* @author Kara Kytle
*/
public interface ControllerEventListener extends EventListener {
/**
* Invoked when a <code>Sequencer</code> has encountered and processed
* a control-change event of interest to this listener. The event passed
* in is a <code>ShortMessage</code> whose first data byte indicates
* the controller number and whose second data byte is the value to which
* the controller was set.
*
* @param event the control-change event that the sequencer encountered in
* the sequence it is processing
*
* @see Sequencer#addControllerEventListener(ControllerEventListener, int[])
* @see MidiChannel#controlChange(int, int)
* @see ShortMessage#getData1
* @see ShortMessage#getData2
*/
public void controlChange(ShortMessage event);
}