jsampler/task/UpdateChannels.java

/*
 *   JSampler - a java front-end for LinuxSampler
 *
 *   Copyright (C) 2005-2011 Grigor Iliev <grigor@grigoriliev.com>
 *
 *   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.task;

import org.jsampler.CC;
import org.jsampler.SamplerChannelModel;
import org.jsampler.SamplerModel;

import org.linuxsampler.lscp.SamplerChannel;

import net.sf.juife.Task;

import static org.jsampler.JSI18n.i18n;


/**
 * This task updates the sampler channel list.
 * @author Grigor Iliev
 */
public class UpdateChannels extends EnhancedTask {
        /** Creates a new instance of <code>UpdateChannels</code>. */
        public
        UpdateChannels() {
                setTitle("UpdateChannels_task");
                setDescription(i18n.getMessage("UpdateChannels.description"));
                //setCalculateElapsedTime(true);
        }
        
        /** The entry point of the task. */
        @Override
        public void
        exec() throws Exception {
                SamplerModel sm = CC.getSamplerModel();
                Integer[] chnIDs = CC.getClient().getSamplerChannelIDs();
                
                boolean found = false, changed = false;
                
                boolean isAdjustingOld = CC.getSamplerModel().getChannelListIsAdjusting();
                
                javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
                        public void
                        run() {
                                CC.getSamplerModel().setChannelListIsAdjusting(true);
                                CC.getMainFrame().setAutoUpdateChannelListUI(false);
                        }
                });
                
                for(SamplerChannelModel m : sm.getChannels()) {
                        for(int i = 0; i < chnIDs.length; i++) {
                                if(m.getChannelId() == chnIDs[i]) {
                                        chnIDs[i] = -1;
                                        found = true;
                                }
                        }
                        
                        if(!found) {
                                sm.removeChannelById(m.getChannelId());
                                changed = true;
                        }
                        found = false;
                }

                SamplerChannel[] chns = CC.getClient().getSamplerChannels(chnIDs);
                
                for(int i = 0; i < chns.length - 1; i++) sm.addChannel(chns[i]);
                
                manageAutoUpdate(false);
                
                if(chns.length > 0) sm.addChannel(chns[chns.length - 1]);
                else if(!CC.getSamplerModel().getChannelListIsAdjusting()) {
                        if(!isAdjustingOld && !changed); // do nothing if nothing is changed
                        else sm.addChannel(null); // fire dummy event to end an adjusting sequence
                }
        }

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