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1
19
20 package com.sshtools.ui.swing;
21
22 import java.awt.BorderLayout  ;
23 import java.awt.Color ;
24 import java.awt.FlowLayout ;
25 import java.awt.event.ActionEvent ;
26 import java.awt.event.ActionListener ;
27 import java.awt.event.WindowAdapter ;
28 import java.awt.event.WindowEvent ;
29 import java.io.OutputStream ;
30 import java.io.PrintStream ;
31 import java.lang.reflect.Method ;
32
33 import javax.swing.JButton ;
34 import javax.swing.JFrame ;
35 import javax.swing.JPanel ;
36 import javax.swing.JScrollPane ;
37 import javax.swing.JTextPane ;
38 import javax.swing.text.BadLocationException ;
39 import javax.swing.text.SimpleAttributeSet ;
40 import javax.swing.text.StyleConstants ;
41
42 import com.sshtools.ui.awt.UIUtil;
43
44 public class DebugConsole {
45
46 private JFrame frame;
47 private JTextPane textArea;
48 private Method deleteMethod;
49 private OutputStream oldSysOut;
50 private boolean userScrolled;
51
52 private static DebugConsole console;
53
54 private DebugConsole() {
55 textArea = new JTextPane ();
56 }
57
58
61 void doShow() {
62 if (frame == null) {
63
64 try {
65 deleteMethod = StringBuffer .class.getMethod("delete", new Class [] { int.class, int.class }); } catch (Throwable t) {
67 }
68 textArea.setEditable(false);
69 JPanel panel = new JPanel (new BorderLayout ());
70 panel.setBackground(Color.gray);
71 panel.setForeground(Color.black);
72 panel.add(new JScrollPane (textArea), BorderLayout.CENTER);
73 JPanel buttonPanel = new JPanel (new FlowLayout (FlowLayout.RIGHT));
74 buttonPanel.setBackground(Color.gray);
75 buttonPanel.setForeground(Color.black);
76 JButton clear = new JButton ("Clear"); clear.addActionListener(new ActionListener () {
78 public void actionPerformed(ActionEvent evt) {
79 clear();
80 }
81 });
82 buttonPanel.add(clear);
83 JButton close = new JButton ("Close"); close.addActionListener(new ActionListener () {
85 public void actionPerformed(ActionEvent evt) {
86 frame.setVisible(false);
87 }
88 });
89 buttonPanel.add(close);
90 panel.add(buttonPanel, BorderLayout.SOUTH);
91 frame = new JFrame ("Console"); frame.addWindowListener(new WindowAdapter () {
93 public void windowClosing(WindowEvent evt) {
94 frame.setVisible(false);
95
96 }
97 });
98 frame.setIconImage(UIUtil.loadImage(getClass(), "/images/idle-16x16.gif")); frame.add(panel);
100 frame.pack();
101 frame.setLocation(100, 100);
102 frame.setSize(300, 400);
103 }
104 frame.setVisible(true);
105 frame.toFront();
106 textArea.setCaretPosition(textArea.getDocument().getLength());
107 userScrolled = false;
108 }
109
110 void clear() {
111 synchronized (textArea) {
112 try {
113 textArea.getStyledDocument().remove(0, textArea.getDocument().getLength());
114 if (frame.isVisible()) {
115 textArea.setCaretPosition(0);
116 }
117 } catch (BadLocationException e) {
118 }
119 }
120 }
121
122 public void append(String text, Color color) {
123 synchronized (textArea) {
124 SimpleAttributeSet attr1 = new SimpleAttributeSet ();
125 StyleConstants.setForeground(attr1, color);
126 try {
127 textArea.getStyledDocument().insertString(textArea.getStyledDocument().getLength(), text, attr1);
128 if (textArea.getStyledDocument().getLength() > 65535) {
129 textArea.getStyledDocument().remove(65536, textArea.getStyledDocument().getLength() - 65535);
130 }
131 if (frame != null && frame.isVisible()) {
132 if (!userScrolled) {
133 textArea.setCaretPosition(textArea.getStyledDocument().getLength());
134 }
135 }
136 } catch (BadLocationException ble) {
137
138 }
139 }
140 }
141
142 public static boolean isStarted() {
143 return console != null;
144 }
145
146 public static void start() {
147 OutputStream oldSysOut = System.out;
148 OutputStream oldSysErr = System.err;
149 console = new DebugConsole();
150 System.setOut(new PrintStream (new ConsoleOutputStream(oldSysOut, Color.black, console), true));
151 System.setErr(new PrintStream (new ConsoleOutputStream(oldSysErr, Color.red, console), true));
152 }
153
154 public static void show() {
155 console.doShow();
156 }
157
158 }
159 |
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