/[svn]/jsampler/trunk/src/org/jsampler/DefaultMidiDeviceModel.java
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Contents of /jsampler/trunk/src/org/jsampler/DefaultMidiDeviceModel.java

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Revision 787 - (show annotations) (download)
Mon Oct 10 16:03:12 2005 UTC (18 years, 5 months ago) by iliev
File size: 4174 byte(s)
* The first alpha-release of JSampler

1 /*
2 * JSampler - a java front-end for LinuxSampler
3 *
4 * Copyright (C) 2005 Grigor Kirilov Iliev
5 *
6 * This file is part of JSampler.
7 *
8 * JSampler is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation.
11 *
12 * JSampler is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with JSampler; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22
23 package org.jsampler;
24
25 import java.util.Vector;
26
27 import javax.swing.SwingUtilities;
28
29 import org.jsampler.event.MidiDeviceEvent;
30 import org.jsampler.event.MidiDeviceListener;
31
32 import org.linuxsampler.lscp.BoolParameter;
33 import org.linuxsampler.lscp.MidiInputDevice;
34 import org.linuxsampler.lscp.Parameter;
35
36
37 /**
38 *
39 * @author Grigor Iliev
40 */
41 public class DefaultMidiDeviceModel implements MidiDeviceModel {
42 private MidiInputDevice midiDevice;
43
44 private final Vector<MidiDeviceListener> listeners = new Vector<MidiDeviceListener>();
45
46 /**
47 * Creates a new instance of <code>DefaultMidiDeviceModel</code> using the
48 * specified non-null MIDI device.
49 * @param midiDevice A <code>MidiInputDevice</code> instance providing the current
50 * settings of the MIDI device which will be represented by this model.
51 * @throws IllegalArgumentException If <code>midiDevice</code> is <code>null</code>.
52 */
53 public
54 DefaultMidiDeviceModel(MidiInputDevice midiDevice) {
55 if(midiDevice == null)
56 throw new IllegalArgumentException("midiDevice must be non null");
57
58 this.midiDevice = midiDevice;
59 }
60
61 /**
62 * Registers the specified listener to be notified when
63 * the settings of the MIDI device are changed.
64 * @param l The <code>MidiDeviceListener</code> to register.
65 */
66 public void
67 addMidiDeviceListener(MidiDeviceListener l) { listeners.add(l); }
68
69 /**
70 * Removes the specified listener.
71 * @param l The <code>MidiDeviceListener</code> to remove.
72 */
73 public void
74 removeMidiDeviceListener(MidiDeviceListener l) { listeners.remove(l); }
75
76 /**
77 * Gets the numerical ID of this MIDI device.
78 * @return The numerical ID of this MIDI device or
79 * -1 if the device number is not set.
80 */
81 public int
82 getDeviceID() { return midiDevice.getDeviceID(); }
83
84 /**
85 * Gets the current settings of the MIDI device represented by this model.
86 * @return <code>MidiInputDevice</code> instance providing
87 * the current settings of the MIDI device represented by this model.
88 */
89 public MidiInputDevice
90 getDeviceInfo() { return midiDevice; }
91
92 /**
93 * Updates the settings of the MIDI device represented by this model.
94 * @param device The new MIDI device settings.
95 */
96 public void
97 setDeviceInfo(MidiInputDevice device) {
98 midiDevice = device;
99 fireSettingsChanged();
100 }
101
102 /**
103 * Sets whether the MIDI device is enabled or disabled.
104 * @param active If <code>true</code> the MIDI device is enabled,
105 * else the device is disabled.
106 */
107 public void
108 setActive(boolean active) {
109 if(active == getDeviceInfo().isActive()) return;
110
111 midiDevice.setActive(active);
112 fireSettingsChanged();
113 }
114
115 /**
116 * Determines whether the MIDI device is active.
117 * @return <code>true</code> if the device is enabled and <code>false</code> otherwise.
118 */
119 public boolean
120 isActive() { return midiDevice.isActive(); }
121
122 /**
123 * Notifies listeners that the settings of the MIDI device are changed.
124 */
125 private void
126 fireSettingsChanged() {
127 fireSettingsChanged(new MidiDeviceEvent(this, this));
128 }
129
130 /**
131 * Notifies listeners that the settings of the MIDI device are changed.
132 * This method should be invoked from the event-dispatching thread.
133 */
134 private void
135 fireSettingsChanged(final MidiDeviceEvent e) {
136 SwingUtilities.invokeLater(new Runnable() {
137 public void
138 run() { for(MidiDeviceListener l : listeners) l.settingsChanged(e); }
139 });
140 }
141 }

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