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/* |
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* JSampler - a java front-end for LinuxSampler |
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* |
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* Copyright (C) 2005-2006 Grigor Iliev <grigor@grigoriliev.com> |
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* |
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* This file is part of JSampler. |
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* |
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* JSampler is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 |
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* as published by the Free Software Foundation. |
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* |
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* JSampler is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with JSampler; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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package org.jsampler; |
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import java.util.Vector; |
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import javax.swing.SwingUtilities; |
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import org.jsampler.event.MidiDeviceEvent; |
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import org.jsampler.event.MidiDeviceListener; |
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import org.jsampler.task.Midi; |
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import org.linuxsampler.lscp.BoolParameter; |
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import org.linuxsampler.lscp.MidiInputDevice; |
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import org.linuxsampler.lscp.Parameter; |
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/** |
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* The Default implementation of the <code>MidiDeviceModel</code> interface. |
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* @author Grigor Iliev |
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*/ |
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public class DefaultMidiDeviceModel implements MidiDeviceModel { |
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private MidiInputDevice midiDevice; |
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private final Vector<MidiDeviceListener> listeners = new Vector<MidiDeviceListener>(); |
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/** |
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* Creates a new instance of <code>DefaultMidiDeviceModel</code> using the |
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* specified non-null MIDI device. |
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* @param midiDevice A <code>MidiInputDevice</code> instance providing the current |
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* settings of the MIDI device which will be represented by this model. |
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* @throws IllegalArgumentException If <code>midiDevice</code> is <code>null</code>. |
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*/ |
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public |
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DefaultMidiDeviceModel(MidiInputDevice midiDevice) { |
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if(midiDevice == null) |
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throw new IllegalArgumentException("midiDevice must be non null"); |
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this.midiDevice = midiDevice; |
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} |
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/** |
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* Registers the specified listener to be notified when |
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* the settings of the MIDI device are changed. |
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* @param l The <code>MidiDeviceListener</code> to register. |
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*/ |
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public void |
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addMidiDeviceListener(MidiDeviceListener l) { listeners.add(l); } |
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/** |
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* Removes the specified listener. |
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* @param l The <code>MidiDeviceListener</code> to remove. |
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*/ |
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public void |
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removeMidiDeviceListener(MidiDeviceListener l) { listeners.remove(l); } |
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/** |
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* Gets the numerical ID of this MIDI device. |
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* @return The numerical ID of this MIDI device or |
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* -1 if the device number is not set. |
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*/ |
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public int |
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getDeviceId() { return midiDevice.getDeviceId(); } |
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/** |
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* Gets the current settings of the MIDI device represented by this model. |
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* @return <code>MidiInputDevice</code> instance providing |
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* the current settings of the MIDI device represented by this model. |
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*/ |
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public MidiInputDevice |
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getDeviceInfo() { return midiDevice; } |
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/** |
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* Updates the settings of the MIDI device represented by this model. |
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* @param device The new MIDI device settings. |
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*/ |
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public void |
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setDeviceInfo(MidiInputDevice device) { |
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midiDevice = device; |
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fireSettingsChanged(); |
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} |
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/** |
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* Sets whether the MIDI device is enabled or disabled. |
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* @param active If <code>true</code> the MIDI device is enabled, |
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* else the device is disabled. |
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*/ |
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public void |
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setActive(boolean active) { |
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if(active == getDeviceInfo().isActive()) return; |
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midiDevice.setActive(active); |
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fireSettingsChanged(); |
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} |
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/** |
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* Determines whether the MIDI device is active. |
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* @return <code>true</code> if the device is enabled and <code>false</code> otherwise. |
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*/ |
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public boolean |
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isActive() { return midiDevice.isActive(); } |
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/** |
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* Schedules a new task for enabling/disabling the MIDI device. |
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* @param active If <code>true</code> the MIDI device is enabled, |
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* else the device is disabled. |
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*/ |
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public void |
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setBackendActive(boolean active) { |
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CC.getTaskQueue().add(new Midi.EnableDevice(getDeviceId(), active)); |
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} |
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/** |
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* Schedules a new task for altering |
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* a specific setting of the MIDI input device. |
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* @param prm The parameter to be set. |
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*/ |
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public void |
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setBackendDeviceParameter(Parameter prm) { |
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CC.getTaskQueue().add(new Midi.SetDeviceParameter(getDeviceId(), prm)); |
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} |
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/** |
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* Schedules a new task for changing the port number of the MIDI device. |
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* @param ports The new number of ports. |
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*/ |
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public void |
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setBackendPortCount(int ports) { |
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CC.getTaskQueue().add(new Midi.SetPortCount(getDeviceId(), ports)); |
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} |
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/** |
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* Schedules a new task for altering a specific |
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* setting of the specified MIDI input port. |
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* @param port The port number. |
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* @param prm The parameter to be set. |
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*/ |
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public void |
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setBackendPortParameter(int port, Parameter prm) { |
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CC.getTaskQueue().add(new Midi.SetPortParameter(getDeviceId(), port, prm)); |
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} |
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/** |
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* Notifies listeners that the settings of the MIDI device are changed. |
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*/ |
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private void |
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fireSettingsChanged() { |
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SwingUtilities.invokeLater(new Runnable() { |
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public void |
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run() { |
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MidiDeviceModel model = DefaultMidiDeviceModel.this; |
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fireSettingsChanged(new MidiDeviceEvent(model, model)); |
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} |
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}); |
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} |
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/** |
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* Notifies listeners that the settings of the MIDI device are changed. |
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* This method should be invoked from the event-dispatching thread. |
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*/ |
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private void |
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fireSettingsChanged(final MidiDeviceEvent e) { |
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CC.getSamplerModel().setModified(true); |
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for(MidiDeviceListener l : listeners) l.settingsChanged(e); |
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} |
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} |