/[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 2288 - (show annotations) (download)
Wed Nov 23 21:19:44 2011 UTC (12 years, 4 months ago) by iliev
File size: 3648 byte(s)
* Added option to select a sampler engine in Add/Edit Instrument dialog
* Moved all Swing dependent code outside the JSampler core

1 /*
2 * JSampler - a java front-end for LinuxSampler
3 *
4 * Copyright (C) 2005-2011 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 org.jsampler.CC;
26 import org.jsampler.SamplerChannelModel;
27 import org.jsampler.SamplerModel;
28
29 import org.linuxsampler.lscp.SamplerChannel;
30
31 import net.sf.juife.PDUtils;
32 import net.sf.juife.Task;
33
34 import static org.jsampler.JSI18n.i18n;
35
36
37 /**
38 * This task updates the sampler channel list.
39 * @author Grigor Iliev
40 */
41 public class UpdateChannels extends EnhancedTask {
42 /** Creates a new instance of <code>UpdateChannels</code>. */
43 public
44 UpdateChannels() {
45 setTitle("UpdateChannels_task");
46 setDescription(i18n.getMessage("UpdateChannels.description"));
47 //setCalculateElapsedTime(true);
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 PDUtils.runOnUiThreadAndWait(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 SamplerChannel[] chns = CC.getClient().getSamplerChannels(chnIDs);
85
86 for(int i = 0; i < chns.length - 1; i++) sm.addChannel(chns[i]);
87
88 manageAutoUpdate(false);
89
90 if(chns.length > 0) sm.addChannel(chns[chns.length - 1]);
91 else if(!CC.getSamplerModel().getChannelListIsAdjusting()) {
92 if(!isAdjustingOld && !changed); // do nothing if nothing is changed
93 else sm.addChannel(null); // fire dummy event to end an adjusting sequence
94 }
95 }
96
97 @Override
98 public void
99 onError(Exception e) {
100 manageAutoUpdate(true);
101 }
102
103 private void
104 manageAutoUpdate(boolean force) {
105 if(!force) {
106 Task[] tasks = CC.getTaskQueue().getPendingTasks();
107 for(Task t : tasks) if(t.equals(this)) return;
108 }
109
110 try {
111 PDUtils.runOnUiThreadAndWait(new Runnable() {
112 public void
113 run() {
114 CC.getSamplerModel().setChannelListIsAdjusting(false);
115 CC.getMainFrame().setAutoUpdateChannelListUI(true);
116 CC.getMainFrame().updateChannelListUI();
117 }
118 });
119 } catch(Exception x) {
120 x.printStackTrace();
121 }
122 }
123
124 /**
125 * Used to decrease the traffic. All task in the queue
126 * equal to this are removed if added using {@link org.jsampler.CC#scheduleTask}.
127 * @see org.jsampler.CC#addTask
128 */
129 @Override
130 public boolean
131 equals(Object obj) {
132 if(obj == null) return false;
133 if(!(obj instanceof UpdateChannels)) return false;
134
135 return true;
136 }
137 }

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