/*
* JSampler - a java front-end for LinuxSampler
*
* Copyright (C) 2005 Grigor Kirilov Iliev
*
* This file is part of JSampler.
*
* JSampler is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* JSampler 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with JSampler; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
package org.jsampler;
import java.util.Vector;
import javax.swing.SwingUtilities;
import org.jsampler.event.MidiDeviceEvent;
import org.jsampler.event.MidiDeviceListener;
import org.linuxsampler.lscp.BoolParameter;
import org.linuxsampler.lscp.MidiInputDevice;
import org.linuxsampler.lscp.Parameter;
/**
* The Default implementation of the MidiDeviceModel
interface.
* @author Grigor Iliev
*/
public class DefaultMidiDeviceModel implements MidiDeviceModel {
private MidiInputDevice midiDevice;
private final Vector listeners = new Vector();
/**
* Creates a new instance of DefaultMidiDeviceModel
using the
* specified non-null MIDI device.
* @param midiDevice A MidiInputDevice
instance providing the current
* settings of the MIDI device which will be represented by this model.
* @throws IllegalArgumentException If midiDevice
is null
.
*/
public
DefaultMidiDeviceModel(MidiInputDevice midiDevice) {
if(midiDevice == null)
throw new IllegalArgumentException("midiDevice must be non null");
this.midiDevice = midiDevice;
}
/**
* Registers the specified listener to be notified when
* the settings of the MIDI device are changed.
* @param l The MidiDeviceListener
to register.
*/
public void
addMidiDeviceListener(MidiDeviceListener l) { listeners.add(l); }
/**
* Removes the specified listener.
* @param l The MidiDeviceListener
to remove.
*/
public void
removeMidiDeviceListener(MidiDeviceListener l) { listeners.remove(l); }
/**
* Gets the numerical ID of this MIDI device.
* @return The numerical ID of this MIDI device or
* -1 if the device number is not set.
*/
public int
getDeviceID() { return midiDevice.getDeviceID(); }
/**
* Gets the current settings of the MIDI device represented by this model.
* @return MidiInputDevice
instance providing
* the current settings of the MIDI device represented by this model.
*/
public MidiInputDevice
getDeviceInfo() { return midiDevice; }
/**
* Updates the settings of the MIDI device represented by this model.
* @param device The new MIDI device settings.
*/
public void
setDeviceInfo(MidiInputDevice device) {
midiDevice = device;
fireSettingsChanged();
}
/**
* Sets whether the MIDI device is enabled or disabled.
* @param active If true
the MIDI device is enabled,
* else the device is disabled.
*/
public void
setActive(boolean active) {
if(active == getDeviceInfo().isActive()) return;
midiDevice.setActive(active);
fireSettingsChanged();
}
/**
* Determines whether the MIDI device is active.
* @return true
if the device is enabled and false
otherwise.
*/
public boolean
isActive() { return midiDevice.isActive(); }
/**
* Notifies listeners that the settings of the MIDI device are changed.
*/
private void
fireSettingsChanged() {
fireSettingsChanged(new MidiDeviceEvent(this, this));
}
/**
* Notifies listeners that the settings of the MIDI device are changed.
* This method should be invoked from the event-dispatching thread.
*/
private void
fireSettingsChanged(final MidiDeviceEvent e) {
SwingUtilities.invokeLater(new Runnable() {
public void
run() { for(MidiDeviceListener l : listeners) l.settingsChanged(e); }
});
}
}