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1
21
22 package org.armedbear.j;
23
24 import javax.swing.SwingUtilities  ;
25
26 public class StatusBarProgressNotifier implements Cancellable, ProgressNotifier, Runnable
27 {
28 private Buffer buffer;
29 private Thread updaterThread;
30 private boolean go = true;
31 private long totalBytes;
32 private long fileSize;
33 private String prefix;
34 private boolean cancelled;
35 private String progressText;
36
37 public StatusBarProgressNotifier(Buffer buffer)
38 {
39 this.buffer = buffer;
40 }
41
42 public void cancel()
43 {
44 cancelled = true;
45 }
46
47 public boolean cancelled()
48 {
49 return cancelled;
50 }
51
52 public void progressStart()
53 {
54 if (updaterThread == null) {
55 updaterThread = new Thread (this);
56 updaterThread.setDaemon(true);
57 updaterThread.start();
58 }
59 }
60
61 public void progressStop()
62 {
63 go = false;
64 }
65
66 public void progress(String prefix, long totalBytes, long fileSize)
67 {
68 this.prefix = prefix;
69 this.totalBytes = totalBytes;
70 this.fileSize = fileSize;
71 }
72
73 public void progress(String progressText)
74 {
75 this.progressText = progressText;
76 }
77
78 public void setText(final String s)
79 {
80 progressText = s;
81 if (s != null)
82 update();
83 }
84
85 private void update()
86 {
87 Runnable r = new Runnable () {
88 public void run()
89 {
90 for (EditorIterator it = new EditorIterator(); it.hasNext();) {
91 Editor ed = it.nextEditor();
92 if (ed.getBuffer() == buffer)
93 ed.status(progressText);
94 }
95 }
96 };
97 SwingUtilities.invokeLater(r);
98 }
99
100 public void run()
101 {
102 long start = System.currentTimeMillis();
103 while (go) {
104 try {
105 Thread.sleep(500);
106 }
107 catch (InterruptedException e) {
108 Log.error(e);
109 }
110 if (go) {
111 if (prefix != null && totalBytes != 0) {
112 long elapsed = System.currentTimeMillis() - start;
113 setText(getProgressText(elapsed));
114 } else
115 update();
116 }
117 }
118 }
119
120 private String getProgressText(long elapsed)
121 {
122 if (elapsed == 0)
123 return null;
124 FastStringBuffer sb = new FastStringBuffer(prefix);
125 if (fileSize > 0) {
126 final long percent = (totalBytes * 100) / fileSize;
127 if (percent >= 100)
128 return null;
129 final long rate = (totalBytes * 1000) / elapsed; final long projected = (fileSize * elapsed) / totalBytes; long seconds = (projected - elapsed) / 1000;
132 long minutes = seconds / 60;
133 if (minutes != 0)
134 seconds = seconds % 60;
135 final long hours = minutes / 60;
136 if (hours != 0)
137 minutes = minutes % 60;
138 long K = fileSize / 1000;
139 if (K == 0)
140 K = 1;
141 sb.append(percent);
142 sb.append("% of ");
143 sb.append(K);
144 sb.append("K (at ");
145 sb.append(rate);
146 sb.append(" bytes/sec, ");
147 if (hours != 0) {
148 sb.append(hours);
149 sb.append(':');
150 if (minutes < 10)
151 sb.append('0');
152 }
153 sb.append(minutes);
154 sb.append(':');
155 if (seconds < 10)
156 sb.append('0');
157 sb.append(seconds);
158 sb.append(" remaining)");
159 } else {
160 final long rate = (totalBytes * 1000) / elapsed; sb.append(totalBytes);
163 sb.append(" bytes (at ");
164 sb.append(rate);
165 sb.append(" bytes/sec)");
166 }
167 return sb.toString();
168 }
169 }
170 |
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