Source Code Cross Referenced for StatusBarProgressNotifier.java in  » IDE » J » org » armedbear » j » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE » J » org.armedbear.j 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * StatusBarProgressNotifier.java
003:         *
004:         * Copyright (C) 2000-2002 Peter Graves
005:         * $Id: StatusBarProgressNotifier.java,v 1.1.1.1 2002/09/24 16:08:45 piso Exp $
006:         *
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License
009:         * as published by the Free Software Foundation; either version 2
010:         * of the License, or (at your option) any later version.
011:         *
012:         * This program is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015:         * GNU General Public License for more details.
016:         *
017:         * You should have received a copy of the GNU General Public License
018:         * along with this program; if not, write to the Free Software
019:         * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
020:         */
021:
022:        package org.armedbear.j;
023:
024:        import javax.swing.SwingUtilities;
025:
026:        public class StatusBarProgressNotifier implements  Cancellable,
027:                ProgressNotifier, Runnable {
028:            private Buffer buffer;
029:            private Thread updaterThread;
030:            private boolean go = true;
031:            private long totalBytes;
032:            private long fileSize;
033:            private String prefix;
034:            private boolean cancelled;
035:            private String progressText;
036:
037:            public StatusBarProgressNotifier(Buffer buffer) {
038:                this .buffer = buffer;
039:            }
040:
041:            public void cancel() {
042:                cancelled = true;
043:            }
044:
045:            public boolean cancelled() {
046:                return cancelled;
047:            }
048:
049:            public void progressStart() {
050:                if (updaterThread == null) {
051:                    updaterThread = new Thread(this );
052:                    updaterThread.setDaemon(true);
053:                    updaterThread.start();
054:                }
055:            }
056:
057:            public void progressStop() {
058:                go = false;
059:            }
060:
061:            public void progress(String prefix, long totalBytes, long fileSize) {
062:                this .prefix = prefix;
063:                this .totalBytes = totalBytes;
064:                this .fileSize = fileSize;
065:            }
066:
067:            public void progress(String progressText) {
068:                this .progressText = progressText;
069:            }
070:
071:            public void setText(final String s) {
072:                progressText = s;
073:                if (s != null)
074:                    update();
075:            }
076:
077:            private void update() {
078:                Runnable r = new Runnable() {
079:                    public void run() {
080:                        for (EditorIterator it = new EditorIterator(); it
081:                                .hasNext();) {
082:                            Editor ed = it.nextEditor();
083:                            if (ed.getBuffer() == buffer)
084:                                ed.status(progressText);
085:                        }
086:                    }
087:                };
088:                SwingUtilities.invokeLater(r);
089:            }
090:
091:            public void run() {
092:                long start = System.currentTimeMillis();
093:                while (go) {
094:                    try {
095:                        Thread.sleep(500);
096:                    } catch (InterruptedException e) {
097:                        Log.error(e);
098:                    }
099:                    if (go) {
100:                        if (prefix != null && totalBytes != 0) {
101:                            long elapsed = System.currentTimeMillis() - start;
102:                            setText(getProgressText(elapsed));
103:                        } else
104:                            update();
105:                    }
106:                }
107:            }
108:
109:            private String getProgressText(long elapsed) {
110:                if (elapsed == 0)
111:                    return null;
112:                FastStringBuffer sb = new FastStringBuffer(prefix);
113:                if (fileSize > 0) {
114:                    final long percent = (totalBytes * 100) / fileSize;
115:                    if (percent >= 100)
116:                        return null;
117:                    final long rate = (totalBytes * 1000) / elapsed; // bytes per second
118:                    final long projected = (fileSize * elapsed) / totalBytes; // milliseconds
119:                    long seconds = (projected - elapsed) / 1000;
120:                    long minutes = seconds / 60;
121:                    if (minutes != 0)
122:                        seconds = seconds % 60;
123:                    final long hours = minutes / 60;
124:                    if (hours != 0)
125:                        minutes = minutes % 60;
126:                    long K = fileSize / 1000;
127:                    if (K == 0)
128:                        K = 1;
129:                    sb.append(percent);
130:                    sb.append("% of ");
131:                    sb.append(K);
132:                    sb.append("K (at ");
133:                    sb.append(rate);
134:                    sb.append(" bytes/sec, ");
135:                    if (hours != 0) {
136:                        sb.append(hours);
137:                        sb.append(':');
138:                        if (minutes < 10)
139:                            sb.append('0');
140:                    }
141:                    sb.append(minutes);
142:                    sb.append(':');
143:                    if (seconds < 10)
144:                        sb.append('0');
145:                    sb.append(seconds);
146:                    sb.append(" remaining)");
147:                } else {
148:                    // We don't know the file size.
149:                    final long rate = (totalBytes * 1000) / elapsed; // bytes per second
150:                    sb.append(totalBytes);
151:                    sb.append(" bytes (at ");
152:                    sb.append(rate);
153:                    sb.append(" bytes/sec)");
154:                }
155:                return sb.toString();
156:            }
157:        }
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