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1
16 package org.apache.log4j.gui;
17
18
19
27
28 import java.awt.Color  ;
29 import java.awt.Image ;
30 import java.awt.Toolkit ;
31 import java.awt.BorderLayout ;
32
33 import javax.swing.*;
34 import javax.swing.text.StyledDocument ;
35 import javax.swing.text.SimpleAttributeSet ;
36 import javax.swing.text.MutableAttributeSet ;
37 import javax.swing.text.StyleConstants ;
38
39 import java.util.Hashtable ;
40 import java.util.StringTokenizer ;
41 import java.util.Enumeration ;
42 import java.util.ArrayList ;
43
44 import org.apache.log4j.*;
45
46 public class LogTextPanel extends JPanel {
47
48 private JScrollBar scrollBar;
49 private JTextPane textPane;
50 private JCheckBox cbxTail;
51 private StyledDocument doc;
52
53 private Hashtable fontAttributes;
54
55 private int eventBufferMaxSize = 10000;
56 private ArrayList eventBuffer = new ArrayList (eventBufferMaxSize);
57 private int eventViewIndex = 0;
58
59 public LogTextPanel() {
60 constructComponents();
61 createDefaultFontAttributes();
62 }
63
64 private void constructComponents() {
65 this.setLayout(new BorderLayout ());
67
68 cbxTail = new JCheckBox();
69 cbxTail.setSelected(true);
70 cbxTail.setText("Tail log events");
71
72 JPanel bottomPanel = new JPanel();
73 bottomPanel.add(cbxTail, null);
74
75 textPane = new JTextPane();
76 textPane.setEditable(false);
77 textPane.setText("");
78 doc = textPane.getStyledDocument();
79
80 scrollBar = new JScrollBar(JScrollBar.VERTICAL);
81
82 this.add(bottomPanel, BorderLayout.SOUTH);
83 this.add(scrollBar, BorderLayout.EAST);
84 this.add(textPane, BorderLayout.CENTER);
85 }
86
87 public
88 void setTextBackground(Color color) {
89 textPane.setBackground(color);
90 }
91
92 public
93 void setTextBackground(String v) {
94 textPane.setBackground(parseColor(v));
95 }
96
97 private void createDefaultFontAttributes() {
98 Priority[] prio = Priority.getAllPossiblePriorities();
99
100 fontAttributes = new Hashtable ();
101 for (int i=0; i<prio.length;i++) {
102 MutableAttributeSet att = new SimpleAttributeSet ();
103 fontAttributes.put(prio[i], att);
104 }
106
107 setTextColor(Priority.FATAL, Color.red);
108 setTextColor(Priority.ERROR, Color.magenta);
109 setTextColor(Priority.WARN, Color.orange);
110 setTextColor(Priority.INFO, Color.blue);
111 setTextColor(Priority.DEBUG, Color.black);
112 }
113
114 private
115 Color parseColor (String v) {
116 StringTokenizer st = new StringTokenizer (v,",");
117 int val[] = {255,255,255,255};
118 int i=0;
119 while (st.hasMoreTokens()) {
120 val[i]=Integer.parseInt(st.nextToken());
121 i++;
122 }
123 return new Color (val[0],val[1],val[2],val[3]);
124 }
125
126 void setTextColor(Priority p, String v) {
127 StyleConstants.setForeground(
128 (MutableAttributeSet )fontAttributes.get(p),parseColor(v));
129 }
130
131 void setTextColor(Priority p, Color c) {
132 StyleConstants.setForeground(
133 (MutableAttributeSet )fontAttributes.get(p),c);
134 }
135
136 void setTextFontSize(int size) {
137 Enumeration e = fontAttributes.elements();
138 while (e.hasMoreElements()) {
139 StyleConstants.setFontSize((MutableAttributeSet )e.nextElement(),size);
140 }
141 return;
142 }
143
144 void setTextFontName(String name) {
145 Enumeration e = fontAttributes.elements();
146 while (e.hasMoreElements()) {
147 StyleConstants.setFontFamily((MutableAttributeSet )e.nextElement(),name);
148 }
149 return;
150 }
151
152 void setEventBufferSize(int bufferSize) {
153 eventBufferMaxSize = bufferSize;
154 }
155
156 void newEvents(EventBufferElement[] evts) {
157
158 if((eventBuffer.size() + evts.length) >= eventBufferMaxSize) {
159 for(int i=0; i < evts.length; i++) {
160 eventBuffer.remove(0);
161 }
162 eventViewIndex -= evts.length;
163 if(eventViewIndex < 0)
164 eventViewIndex = 0;
165 }
166 for(int i=0; i < evts.length; i++)
167 eventBuffer.add(evts[i]);
168
169 if((eventBuffer.size() > maxR) && cbxTail.isSelected()) {
170 eventViewIndex = (eventBuffer.size() - maxR);
171 }
172
173 if((maxR < 0) || (eventBuffer.size() >= eventViewIndex && eventBuffer.size() <= (eventViewIndex + maxR)))
175 drawText();
176 }
177
178 int maxR = -1;
179
180 void drawText() {
181 if(maxR < 0)
182 maxR = textPane.getHeight() / textPane.getFontMetrics(textPane.getFont()).getHeight();
183 try {
184 doc.remove(0, doc.getLength());
185 } catch(Exception e) { e.printStackTrace(); }
186
187 for(int i=eventViewIndex; (i < eventBuffer.size()) && (i < (eventViewIndex + maxR)); i++) {
188 EventBufferElement evt = (EventBufferElement)eventBuffer.get(i);
189
190 try {
191 doc.insertString(doc.getLength(), evt.text, (MutableAttributeSet )fontAttributes.get(evt.prio));
192 } catch(Exception e) { e.printStackTrace(); }
193 }
194 }
195
196
197 } |
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