[client] Add debug window (VMarg -Dlog=true)

1 files changed, 95 insertions, 0 deletions

diff --git a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/helper/DebugWindow.java b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/helper/DebugWindow.java
new file mode 100644
index 00000000..14d96738
--- /dev/null
+++ b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/helper/DebugWindow.java
@@ -0,0 +1,95 @@
+package org.openslx.dozmod.gui.helper;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Insets;
+
+import javax.swing.BorderFactory;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JTextPane;
+import javax.swing.border.BevelBorder;
+import javax.swing.border.EmptyBorder;
+import javax.swing.text.BadLocationException;
+import javax.swing.text.SimpleAttributeSet;
+import javax.swing.text.StyleConstants;
+import javax.swing.text.StyledDocument;
+
+import org.apache.log4j.Appender;
+import org.apache.log4j.AppenderSkeleton;
+import org.apache.log4j.BasicConfigurator;
+import org.apache.log4j.Level;
+import org.apache.log4j.Priority;
+import org.apache.log4j.spi.LoggingEvent;
+import org.joda.time.format.DateTimeFormat;
+import org.joda.time.format.DateTimeFormatter;
+
+@SuppressWarnings("serial")
+public class DebugWindow extends JPanel {
+
+	private static final DateTimeFormatter formatter = DateTimeFormat.forPattern("HH:mm:ss");
+
+	private final JTextPane txtLog;
+
+	public DebugWindow() {
+		setLayout(new BorderLayout());
+		txtLog = new JTextPane();
+		txtLog.setEditable(false);
+		txtLog.setBackground(Color.WHITE);
+		txtLog.setForeground(Color.BLACK);
+		txtLog.setBorder(new EmptyBorder(new Insets(5, 5, 5, 5)));
+		JScrollPane sp = new JScrollPane(txtLog, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
+				JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
+		sp.setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED));
+		add(sp, BorderLayout.CENTER);
+		registerLogger();
+		validate();
+	}
+
+	private void registerLogger() {
+		Appender appender = new AppenderSkeleton() {
+
+			@Override
+			public boolean requiresLayout() {
+				return false;
+			}
+
+			@Override
+			public void close() {
+				// Nothing to do
+			}
+
+			@Override
+			protected void append(LoggingEvent event) {
+				Level l = event.getLevel();
+				Color c;
+				if (l.isGreaterOrEqual(Priority.ERROR)) {
+					c = Color.RED;
+				} else if (l.isGreaterOrEqual(Priority.WARN)) {
+					c = Color.ORANGE;
+				} else if (l.isGreaterOrEqual(Priority.INFO)) {
+					c = Color.BLACK;
+				} else {
+					c = Color.GRAY;
+				}
+				log("[" + formatter.print(event.getTimeStamp()) + "] ", Color.BLACK);
+				log(event.getThreadName() + "@" + event.getLoggerName().replaceAll("^.*\\.", ""), Color.GRAY);
+				log("  " + event.getMessage() + "\n", c);
+			}
+		};
+		BasicConfigurator.configure(appender);
+	}
+
+	private void log(String msg, Color c) {
+		StyledDocument doc = txtLog.getStyledDocument();
+		SimpleAttributeSet keyWord = new SimpleAttributeSet();
+		StyleConstants.setForeground(keyWord, c);
+		try {
+			doc.insertString(doc.getLength(), msg, keyWord);
+		} catch (BadLocationException e) {
+			e.printStackTrace(); // Do not use LOGGER here to prevent infinite loop
+		}
+		txtLog.setCaretPosition(doc.getLength());
+	}
+
+}