From c4fe31d41aa6c2ae75ba77a84c86c2c959d1cc7a Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Sat, 17 May 2008 18:27:44 +0000
Subject: Logging filter works!

---
 sources/simulator/VSLogging.java | 97 ++++++++++++++++++++++++++++++++++------
 1 file changed, 83 insertions(+), 14 deletions(-)

(limited to 'sources/simulator/VSLogging.java')

diff --git a/sources/simulator/VSLogging.java b/sources/simulator/VSLogging.java
index c65198b..3683c3a 100644
--- a/sources/simulator/VSLogging.java
+++ b/sources/simulator/VSLogging.java
@@ -1,20 +1,27 @@
 package simulator;
 
-import javax.swing.*;
 import java.util.*;
+import java.util.regex.*;
+import javax.swing.*;
 
 import utils.*;
 
 public class VSLogging {
     private JTextArea loggingArea;
+    private String filterText;
+    private ArrayList<StringBuffer> pauseLines;
+    private ArrayList<StringBuffer> loggingLines;
     private VSSimulationPanel simulationPanel;
-    private volatile boolean isPaused;
-    private StringBuffer pauseBuffer;
+    private boolean isFiltered;
+    private boolean isPaused;
+    private Pattern filterPattern;
 
     public VSLogging() {
         loggingArea = new JTextArea(0, 0);
         loggingArea.setEditable(false);
-        pauseBuffer = new StringBuffer();
+        loggingLines = new ArrayList<StringBuffer>();
+        pauseLines = new ArrayList<StringBuffer>();
+        filterText = "";
     }
 
     public void setSimulationPanel(VSSimulationPanel simulationPanel) {
@@ -32,26 +39,88 @@ public class VSLogging {
             logg(message, simulationPanel.getTime());
     }
 
-    public void logg(String message, long time) {
+    public synchronized void logg(String message, long time) {
+        StringBuffer buffer = new StringBuffer();
+        buffer.append(VSTools.getTimeString(time));
+        buffer.append(": ");
+        buffer.append(message);
+
         if (isPaused) {
-            pauseBuffer.append(VSTools.getTimeString(time));
-            pauseBuffer.append(": ");
-            pauseBuffer.append(message);
-            pauseBuffer.append("\n");
+            pauseLines.add(buffer);
+            loggingLines.add(buffer);
+            loggingArea.append(buffer.toString()+"\n");
+            loggingArea.setCaretPosition(loggingArea.getDocument().getLength());
 
         } else {
-            loggingArea.append(VSTools.getTimeString(time) + ": " + message + "\n");
-            loggingArea.setCaretPosition(loggingArea.getDocument().getLength());
+            loggFiltered(buffer);
         }
     }
 
-    public void isPaused(boolean isPaused) {
+    public synchronized void isPaused(boolean isPaused) {
         this.isPaused = isPaused;
 
         if (!isPaused) {
-            loggingArea.append(pauseBuffer.toString());
+            for (StringBuffer buffer : pauseLines)
+                loggFiltered(buffer);
+
+            pauseLines.clear();
+        }
+    }
+
+    private void loggFiltered(StringBuffer buffer) {
+        loggingLines.add(buffer);
+        if (!isFiltered) {
+            loggingArea.append(buffer.toString()+"\n");
             loggingArea.setCaretPosition(loggingArea.getDocument().getLength());
-            pauseBuffer.delete(0, pauseBuffer.length());
+
+        } else if (filterPattern != null && filterPattern.matcher(buffer).find()) {
+            loggingArea.append(buffer.toString()+"\n");
+            loggingArea.setCaretPosition(loggingArea.getDocument().getLength());
+        }
+    }
+
+    public synchronized void isFiltered(boolean isFiltered) {
+        this.isFiltered = isFiltered;
+
+        if (!isFiltered)
+            setFilterText("");
+        else
+            filter();
+    }
+
+    public synchronized void setFilterText(String filterText) {
+        this.filterText = filterText;
+        filter();
+    }
+
+    public synchronized void clear() {
+        loggingLines.clear();
+        pauseLines.clear();
+        loggingArea.setText("");
+    }
+
+    private void filter() {
+        try {
+            filterPattern = Pattern.compile(filterText);
+            StringBuffer buffer = new StringBuffer();
+
+            for (StringBuffer line : loggingLines) {
+                if (isFiltered) {
+                    Matcher matcher = filterPattern.matcher(line);
+                    if (matcher.find()) {
+                        buffer.append(line);
+                        buffer.append("\n");
+                    }
+                } else {
+                    buffer.append(line);
+                    buffer.append("\n");
+                }
+            }
+            loggingArea.setText(buffer.toString());
+
+        } catch (Exception e) {
+            filterPattern = null;
+            loggingArea.setText("");
         }
     }
 }
-- 
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