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

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Revision 1880 - (show annotations) (download)
Sun Mar 29 19:10:49 2009 UTC (15 years ago) by iliev
File size: 3724 byte(s)
* fixed bug in the sampler channel number notifications

1 /*
2 * JSampler - a java front-end for LinuxSampler
3 *
4 * Copyright (C) 2005-2009 Grigor Iliev <grigor@grigoriliev.com>
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.task;
24
25 import java.util.Vector;
26
27 import org.jsampler.CC;
28 import org.jsampler.SamplerChannelModel;
29 import org.jsampler.SamplerModel;
30
31 import org.linuxsampler.lscp.SamplerChannel;
32
33 import net.sf.juife.Task;
34
35 import static org.jsampler.JSI18n.i18n;
36
37
38 /**
39 * This task updates the sampler channel list.
40 * @author Grigor Iliev
41 */
42 public class UpdateChannels extends EnhancedTask {
43 /** Creates a new instance of <code>UpdateChannels</code>. */
44 public
45 UpdateChannels() {
46 setTitle("UpdateChannels_task");
47 setDescription(i18n.getMessage("UpdateChannels.description"));
48 }
49
50 /** The entry point of the task. */
51 @Override
52 public void
53 exec() throws Exception {
54 SamplerModel sm = CC.getSamplerModel();
55 Integer[] chnIDs = CC.getClient().getSamplerChannelIDs();
56
57 boolean found = false, changed = false;
58
59 boolean isAdjustingOld = CC.getSamplerModel().getChannelListIsAdjusting();
60
61 javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
62 public void
63 run() {
64 CC.getSamplerModel().setChannelListIsAdjusting(true);
65 CC.getMainFrame().setAutoUpdateChannelListUI(false);
66 }
67 });
68
69 for(SamplerChannelModel m : sm.getChannels()) {
70 for(int i = 0; i < chnIDs.length; i++) {
71 if(m.getChannelId() == chnIDs[i]) {
72 chnIDs[i] = -1;
73 found = true;
74 }
75 }
76
77 if(!found) {
78 sm.removeChannelById(m.getChannelId());
79 changed = true;
80 }
81 found = false;
82 }
83
84 Vector<SamplerChannel> v = new Vector<SamplerChannel>();
85 for(int id : chnIDs) {
86 if(id >= 0) v.add(CC.getClient().getSamplerChannelInfo(id));
87 }
88
89 for(int i = 0; i < v.size() - 1; i++) sm.addChannel(v.elementAt(i));
90
91 manageAutoUpdate(false);
92
93 if(v.size() > 0) sm.addChannel(v.elementAt(v.size() - 1));
94 else if(!CC.getSamplerModel().getChannelListIsAdjusting()) {
95 if(!isAdjustingOld && !changed); // do nothing if nothing is changed
96 else sm.addChannel(null); // fire dummy event to end an adjusting sequence
97 }
98 }
99
100 @Override
101 public void
102 onError(Exception e) {
103 manageAutoUpdate(true);
104 }
105
106 private void
107 manageAutoUpdate(boolean force) {
108 if(!force) {
109 Task[] tasks = CC.getTaskQueue().getPendingTasks();
110 for(Task t : tasks) if(t.equals(this)) return;
111 }
112
113 try {
114 javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
115 public void
116 run() {
117 CC.getSamplerModel().setChannelListIsAdjusting(false);
118 CC.getMainFrame().setAutoUpdateChannelListUI(true);
119 CC.getMainFrame().updateChannelListUI();
120 }
121 });
122 } catch(Exception x) {
123 x.printStackTrace();
124 }
125 }
126
127 /**
128 * Used to decrease the traffic. All task in the queue
129 * equal to this are removed if added using {@link org.jsampler.CC#scheduleTask}.
130 * @see org.jsampler.CC#addTask
131 */
132 @Override
133 public boolean
134 equals(Object obj) {
135 if(obj == null) return false;
136 if(!(obj instanceof UpdateChannels)) return false;
137
138 return true;
139 }
140 }

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