jsampler/view/JSViews.java

/*
 *   JSampler - a java front-end for LinuxSampler
 *
 *   Copyright (C) 2005, 2006 Grigor Kirilov Iliev
 *
 *   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.view;

import java.net.URL;

import java.util.StringTokenizer;
import java.util.Vector;

import java.util.jar.Attributes;
import java.util.jar.Manifest;

import java.util.logging.Level;

import org.jsampler.CC;
import org.jsampler.HF;


/**
 * This class provides information about the available views in the current distribution.
 * @author Grigor Iliev
 */
public class JSViews {
        private static Vector<ViewEntry> viewEntries = new Vector<ViewEntry>();
        private static String currentView = null;
        private static String defaultView = null;
        
        /** Forbits instantiation of JSViews */
        private
        JSViews() { }
        
        /**
         * Gets a list of all available views.
         * @return A list of all available views.
         */
        public static String[]
        getAvailableViews() {
                String[] views = new String[viewEntries.size()];
                for(int i = 0; i < viewEntries.size(); i++) views[i] = viewEntries.get(i).name;
                return views;
        }
        
        /**
         * Gets the current view name of this distribution.
         * @return The current view name of this distribution.
         */
        public static String
        getCurrentView() { return currentView; }
        
        /**
         * Gets the default view name of this distribution.
         * @return The default view name of this distribution.
         */
        public static String
        getDefaultView() { return defaultView; }
        
        /**
         * Changes the current view.
         * This method should be invoked only from the event-dispatching thread.
         * @param viewName The new view to be used.
         */
        public static void
        setView(String viewName) {
                if(viewName == null) {
                        CC.getLogger().info("viewName is null!");
                        return;
                }
                
                ViewEntry entry = null;
                
                for(ViewEntry ve : viewEntries) {
                        if(viewName.equals(ve.name)) {
                                entry = ve;
                                break;
                        }
                }
                
                if(entry == null) {
                        CC.getLogger().info("Missing view: " + viewName);
                        return;
                }
                
                if(CC.getMainFrame() != null) CC.getMainFrame().setVisible(false);
                
                try { CC.setMainFrame((JSMainFrame) Class.forName(entry.mainFrame).newInstance()); }
                catch(Exception e) {
                        CC.getLogger().info(HF.getErrorMessage(e));
                        if(CC.getMainFrame() != null) CC.getMainFrame().setVisible(true);
                        return;
                }
                
                try { CC.setProgressIndicator (
                        (JSProgress)Class.forName(entry.progressIndicator).newInstance()
                );} catch(Exception e) { CC.getLogger().info(HF.getErrorMessage(e)); }
                
                CC.getMainFrame().setVisible(true);
                
                currentView = viewName;
        }
        
        /**
         * Parses the manifest file <code>views.mf</code> to gather information
         * about the available views in this JSampler distribution.
         */
        public static void
        parseManifest() {
                viewEntries.removeAllElements();
                
                try {
                        Manifest m = new Manifest(JSViews.class.getResourceAsStream("views.mf"));
                        String s = m.getMainAttributes().getValue("JS-Views");
                        if(s == null) {
                                CC.getLogger().warning("Missing manifest attribute: JS-Views");
                                return;
                        }
                        
                        StringTokenizer st = new StringTokenizer(s);
                        while(st.hasMoreTokens()) {
                                s = st.nextToken();
                                Attributes a = m.getAttributes(s);
                                
                                if(a == null) {
                                        CC.getLogger().warning("Missing manifest entry: " + s);
                                        continue;
                                }
                                
                                ViewEntry ve = new ViewEntry();
                                ve.name = a.getValue("View-Name");
                                ve.mainFrame = a.getValue("Main-Frame");
                                ve.progressIndicator = a.getValue("Progress-Indicator");
                                
                                viewEntries.addElement(ve);
                        }
                        
                        s = m.getMainAttributes().getValue("JS-Default-View");
                        Attributes a = m.getAttributes(s);
                        if(a != null) defaultView = a.getValue("View-Name");
                } catch(Exception x) {
                        CC.getLogger().log(Level.INFO, HF.getErrorMessage(x), x);
                }
        }
        
        private static class ViewEntry {
                String name;
                String mainFrame;
                String progressIndicator;
        }
}
1	iliev	913	/*
2			* JSampler - a java front-end for LinuxSampler
3			*
4			* Copyright (C) 2005, 2006 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
24			package org.jsampler.view;
25
26			import java.net.URL;
27
28			import java.util.StringTokenizer;
29			import java.util.Vector;
30
31			import java.util.jar.Attributes;
32			import java.util.jar.Manifest;
33
34			import java.util.logging.Level;
35
36			import org.jsampler.CC;
37			import org.jsampler.HF;
38
39
40			/**
41			* This class provides information about the available views in the current distribution.
42			* @author Grigor Iliev
43			*/
44			public class JSViews {
45			private static Vector<ViewEntry> viewEntries = new Vector<ViewEntry>();
46			private static String currentView = null;
47			private static String defaultView = null;
48
49			/** Forbits instantiation of JSViews */
50			private
51			JSViews() { }
52
53			/**
54			* Gets a list of all available views.
55			* @return A list of all available views.
56			*/
57			public static String[]
58			getAvailableViews() {
59			String[] views = new String[viewEntries.size()];
60			for(int i = 0; i < viewEntries.size(); i++) views[i] = viewEntries.get(i).name;
61			return views;
62			}
63
64			/**
65			* Gets the current view name of this distribution.
66			* @return The current view name of this distribution.
67			*/
68			public static String
69			getCurrentView() { return currentView; }
70
71			/**
72			* Gets the default view name of this distribution.
73			* @return The default view name of this distribution.
74			*/
75			public static String
76			getDefaultView() { return defaultView; }
77
78			/**
79			* Changes the current view.
80			* This method should be invoked only from the event-dispatching thread.
81			* @param viewName The new view to be used.
82			*/
83			public static void
84			setView(String viewName) {
85			if(viewName == null) {
86			CC.getLogger().info("viewName is null!");
87			return;
88			}
89
90			ViewEntry entry = null;
91
92			for(ViewEntry ve : viewEntries) {
93			if(viewName.equals(ve.name)) {
94			entry = ve;
95			break;
96			}
97			}
98
99			if(entry == null) {
100			CC.getLogger().info("Missing view: " + viewName);
101			return;
102			}
103
104			if(CC.getMainFrame() != null) CC.getMainFrame().setVisible(false);
105
106			try { CC.setMainFrame((JSMainFrame) Class.forName(entry.mainFrame).newInstance()); }
107			catch(Exception e) {
108			CC.getLogger().info(HF.getErrorMessage(e));
109			if(CC.getMainFrame() != null) CC.getMainFrame().setVisible(true);
110			return;
111			}
112
113			try { CC.setProgressIndicator (
114			(JSProgress)Class.forName(entry.progressIndicator).newInstance()
115			);} catch(Exception e) { CC.getLogger().info(HF.getErrorMessage(e)); }
116
117			CC.getMainFrame().setVisible(true);
118
119			currentView = viewName;
120			}
121
122			/**
123			* Parses the manifest file <code>views.mf</code> to gather information
124			* about the available views in this JSampler distribution.
125			*/
126			public static void
127			parseManifest() {
128			viewEntries.removeAllElements();
129
130			try {
131			Manifest m = new Manifest(JSViews.class.getResourceAsStream("views.mf"));
132			String s = m.getMainAttributes().getValue("JS-Views");
133			if(s == null) {
134			CC.getLogger().warning("Missing manifest attribute: JS-Views");
135			return;
136			}
137
138			StringTokenizer st = new StringTokenizer(s);
139			while(st.hasMoreTokens()) {
140			s = st.nextToken();
141			Attributes a = m.getAttributes(s);
142
143			if(a == null) {
144			CC.getLogger().warning("Missing manifest entry: " + s);
145			continue;
146			}
147
148			ViewEntry ve = new ViewEntry();
149			ve.name = a.getValue("View-Name");
150			ve.mainFrame = a.getValue("Main-Frame");
151			ve.progressIndicator = a.getValue("Progress-Indicator");
152
153			viewEntries.addElement(ve);
154			}
155
156			s = m.getMainAttributes().getValue("JS-Default-View");
157			Attributes a = m.getAttributes(s);
158			if(a != null) defaultView = a.getValue("View-Name");
159			} catch(Exception x) {
160			CC.getLogger().log(Level.INFO, HF.getErrorMessage(x), x);
161			}
162			}
163
164			private static class ViewEntry {
165			String name;
166			String mainFrame;
167			String progressIndicator;
168			}
169			}