added support for changing the buffer size via the preferences page

ch.qos.logback.beagle/plugin.xml

@@ -31,14 +31,14 @@
         point="org.eclipse.ui.preferencePages">
      <page
            category="org.eclipse.debug.ui.DebugPreferencePage"
-           class="ch.qos.logback.beagle.preferences.WorkbenchPreferences"
+           class="ch.qos.logback.beagle.preferences.BeaglePreferencesPage"
            id="ch.qos.logback.beagle.preferences"
            name="Beagle">
      </page>
   </extension>
 
   <extension point="org.eclipse.core.runtime.preferences">
-     <initializer class="ch.qos.logback.beagle.preferences.PreferenceInitializer"/>
+     <initializer class="ch.qos.logback.beagle.preferences.BeaglePreferenceInitializer"/>
    </extension>
 
 </plugin>

ch.qos.logback.beagle/src/ch/qos/logback/beagle/Constants.java

@@ -13,7 +13,7 @@ public class Constants {
 
   final public static int ICON_SIZE = 16;
 
-  public static int MAX = 20*1000;
+  //public static int MAX = 20*1000;
 
-  public static int CLEAN_COUNT = MAX / 10;
+  //public static int CLEAN_COUNT = MAX / 10;
 }

ch.qos.logback.beagle/src/ch/qos/logback/beagle/preferences/BeaglePreferenceInitializer.java

@@ -0,0 +1,28 @@
+/**
+ * Logback-beagle: The logback Console Plugin for Eclipse 
+ * Copyright (C) 2006-2012, QOS.ch. All rights reserved.
+ *
+ * This program and the accompanying materials are licensed under
+ * either the terms of the Eclipse Public License v1.0 as published by
+ * the Eclipse Foundation.
+ */
+package ch.qos.logback.beagle.preferences;
+
+import org.eclipse.core.runtime.preferences.AbstractPreferenceInitializer;
+import org.eclipse.jface.preference.IPreferenceStore;
+
+import ch.qos.logback.beagle.Activator;
+
+public class BeaglePreferenceInitializer extends AbstractPreferenceInitializer {
+
+  @Override
+  public void initializeDefaultPreferences() {
+    IPreferenceStore store = Activator.getDefault().getPreferenceStore();
+    store.setDefault(BeaglePreferencesPage.PATTERN_PREFERENCE,
+	BeaglePreferencesPage.PATTERN_PREFERENCE_DEFAULT_VALUE);
+    store.setDefault(BeaglePreferencesPage.BUFFER_SIZE_PREFERENCE,
+	BeaglePreferencesPage.BUFFER_SIZE_PREFERENCE_DEFAULT_VALUE);
+
+  }
+
+}

ch.qos.logback.beagle/src/ch/qos/logback/beagle/preferences/BeaglePreferencesChangeListenter.java

@@ -0,0 +1,59 @@
+/**
+ * Logback-beagle: The logback Console Plugin for Eclipse 
+ * Copyright (C) 2006-2012, QOS.ch. All rights reserved.
+ *
+ * This program and the accompanying materials are licensed under
+ * either the terms of the Eclipse Public License v1.0 as published by
+ * the Eclipse Foundation.
+ */
+package ch.qos.logback.beagle.preferences;
+
+import org.eclipse.jface.util.IPropertyChangeListener;
+import org.eclipse.jface.util.PropertyChangeEvent;
+
+import ch.qos.logback.beagle.visual.ClassicTISBuffer;
+import ch.qos.logback.classic.PatternLayout;
+
+/**
+ * This IPropertyChangeListener reacts to preference changes and updates BeagleView accordingly. 
+ * 
+ * @author ceki
+ * @since 1.0.0
+ */
+public class BeaglePreferencesChangeListenter implements IPropertyChangeListener {
+
+  final ClassicTISBuffer classicTISBuffer;
+  final PatternLayout layout;
+
+  public BeaglePreferencesChangeListenter(PatternLayout layout, ClassicTISBuffer classicTISBuffer) {
+    this.layout = layout;
+    this.classicTISBuffer = classicTISBuffer;
+  }
+
+  @Override
+  public void propertyChange(PropertyChangeEvent event) {
+    String changedProperty = event.getProperty();
+    if (BeaglePreferencesPage.PATTERN_PREFERENCE.equals(changedProperty)) {
+      updateLayoutPattern(event);
+    } else if (BeaglePreferencesPage.BUFFER_SIZE_PREFERENCE.equals(changedProperty)) {
+      updateBufferSize(event);
+    }
+
+  }
+
+  private void updateBufferSize(PropertyChangeEvent event) {
+    int newBufferSize = (Integer) event.getNewValue();
+    classicTISBuffer.setBufferSize(newBufferSize);
+    System.out.println("new buffer size = "+newBufferSize);
+  }
+
+  private void updateLayoutPattern(PropertyChangeEvent event) {
+    String newPattern = (String) event.getNewValue();
+    if(newPattern != null) {
+      layout.setPattern(newPattern);
+      layout.start();
+      classicTISBuffer.resetTable();
+    }
+  }
+
+}

ch.qos.logback.beagle/src/ch/qos/logback/beagle/preferences/BeaglePreferencesPage.java

@@ -0,0 +1,85 @@
+/**
+ * Logback-beagle: The logback Console Plugin for Eclipse 
+ * Copyright (C) 2006-2012, QOS.ch. All rights reserved.
+ *
+ * This program and the accompanying materials are licensed under
+ * either the terms of the Eclipse Public License v1.0 as published by
+ * the Eclipse Foundation.
+ */
+package ch.qos.logback.beagle.preferences;
+
+import org.eclipse.jface.preference.FieldEditor;
+import org.eclipse.jface.preference.FieldEditorPreferencePage;
+import org.eclipse.jface.preference.IntegerFieldEditor;
+import org.eclipse.jface.preference.StringFieldEditor;
+import org.eclipse.jface.util.PropertyChangeEvent;
+import org.eclipse.ui.IWorkbench;
+import org.eclipse.ui.IWorkbenchPreferencePage;
+
+import ch.qos.logback.beagle.Activator;
+
+/**
+ * 
+ * @author ceki
+ *
+ */
+public class BeaglePreferencesPage extends FieldEditorPreferencePage implements
+    IWorkbenchPreferencePage {
+
+  public static final String PATTERN_PREFERENCE = "ch.qos.logback.beagle.Pattern"; 
+  public static final String PATTERN_PREFERENCE_DEFAULT_VALUE = "%date %-5level %-20([%thread]) %logger{32} %message";
+
+  public static final String BUFFER_SIZE_PREFERENCE = "ch.qos.logback.beagle.BufferSize"; 
+  public static final int BUFFER_SIZE_PREFERENCE_DEFAULT_VALUE  = 20000;
+  static final int MIN_BUFFER_SIZE = 100;
+  static final int MAX_BUFFER_SIZE = 100*1000;
+
+  private StringFieldEditor patternEditor;
+  private IntegerFieldEditor bufferSizeEditor;
+
+
+  public BeaglePreferencesPage() {
+    super(GRID);
+    setPreferenceStore(Activator.INSTANCE.getPreferenceStore());
+    setDescription("Beagle (logback console) settings:");
+  }
+
+
+
+  @Override
+  public void init(IWorkbench workbench) {
+  }
+
+
+  @Override protected void checkState() {
+    super.checkState();
+    if(!isValid()) return;
+    int val = bufferSizeEditor.getIntValue();
+    if(val <= MIN_BUFFER_SIZE) {
+      setErrorMessage("Buffer size must be greater than "+MIN_BUFFER_SIZE);
+      setValid(false);
+    } else if(val > MAX_BUFFER_SIZE) {
+      setErrorMessage("Buffer size must be less than "+MAX_BUFFER_SIZE);
+      setValid(false);
+    }
+  }
+
+  public void propertyChange(PropertyChangeEvent event) {
+    super.propertyChange(event);
+   if(FieldEditor.VALUE.equals(event.getProperty())) {
+     if(event.getSource() == bufferSizeEditor) {
+       checkState();
+     }
+   }
+  }
+
+  @Override
+  protected void createFieldEditors() {
+    patternEditor = new StringFieldEditor(PATTERN_PREFERENCE, "Log line pattern:", getFieldEditorParent());
+    addField(patternEditor);
+
+    bufferSizeEditor = new IntegerFieldEditor(BUFFER_SIZE_PREFERENCE, "Buffer size (lines):", getFieldEditorParent());
+    addField(bufferSizeEditor);
+  }
+
+}

ch.qos.logback.beagle/src/ch/qos/logback/beagle/vista/TableMediator.java

@@ -23,8 +23,8 @@
 import ch.qos.logback.beagle.Activator;
 import ch.qos.logback.beagle.Constants;
 import ch.qos.logback.beagle.menu.MenuBuilder;
-import ch.qos.logback.beagle.preferences.PreferencesChangeListenter;
-import ch.qos.logback.beagle.preferences.WorkbenchPreferences;
+import ch.qos.logback.beagle.preferences.BeaglePreferencesChangeListenter;
+import ch.qos.logback.beagle.preferences.BeaglePreferencesPage;
 import ch.qos.logback.beagle.util.MetricsUtil;
 import ch.qos.logback.beagle.util.ResourceUtil;
 import ch.qos.logback.beagle.visual.ClassicTISBuffer;
@@ -37,19 +37,19 @@ public class TableMediator {
 
   public Table table;
   public ClassicTISBuffer classicTISBuffer;
-  public PreferencesChangeListenter preferencesChangeListenter; 
+  public BeaglePreferencesChangeListenter preferencesChangeListenter;
   final Composite parent;
   public final PatternLayout layout = new PatternLayout();
   private LoggerContext loggerContext = new LoggerContext();
-  
+
   public TableMediator(Composite parent) {
     this.parent = parent;
     init();
   }
 
   private void init() {
     loggerContext.setName("beagle");
-    
+
     table = new Table(parent, SWT.VIRTUAL | SWT.H_SCROLL | SWT.V_SCROLL
 	| SWT.MULTI | SWT.BORDER);
     table.setFont(ResourceUtil.FONT);
@@ -101,16 +101,17 @@ private void init() {
 
     table.addControlListener(new TableControlListener(charWidth));
 
-
     initLayout(layout);
-    classicTISBuffer = new ClassicTISBuffer(layout, table);
+    int bufSize = getBufferSize();
+    classicTISBuffer = new ClassicTISBuffer(layout, table, bufSize);
     classicTISBuffer.diffCue = diffCueLabel;
     classicTISBuffer.jumpCue = jumpCueLabel;
-
-    preferencesChangeListenter = new PreferencesChangeListenter(layout, classicTISBuffer);
-
 
-    // when the table is cleared visualElementBuffer's handleEvent method will re-populate the item
+    preferencesChangeListenter = new BeaglePreferencesChangeListenter(layout,
+	classicTISBuffer);
+
+    // when the table is cleared visualElementBuffer's handleEvent method will
+    // re-populate the item
     table.addListener(SWT.SetData, classicTISBuffer);
     table.addDisposeListener(classicTISBuffer);
 
@@ -128,20 +129,31 @@ private void init() {
     table.addMouseListener(myMouseListener);
     table.addMouseTrackListener(myMouseListener);
 
-    table.addMouseMoveListener(new TimeDifferenceMouseListener(
-	classicTISBuffer));
+    table
+	.addMouseMoveListener(new TimeDifferenceMouseListener(classicTISBuffer));
 
     Menu menu = MenuBuilder.buildMenu(classicTISBuffer);
     MenuBuilder.addOnMenuSelectionAction(menu, classicTISBuffer);
     table.setMenu(menu);
     table.setItemCount(0);
   }
-
+
+  int getBufferSize() {
+    int result = BeaglePreferencesPage.BUFFER_SIZE_PREFERENCE_DEFAULT_VALUE;
+    if (Activator.INSTANCE != null) {
+      IPreferenceStore pStore = Activator.INSTANCE.getPreferenceStore();
+      result = pStore.getInt(BeaglePreferencesPage.BUFFER_SIZE_PREFERENCE);
+    }
+    return result;
+  }
   private void initLayout(PatternLayout layout) {
-     layout.setContext(loggerContext);
-     IPreferenceStore pStore = Activator.INSTANCE.getPreferenceStore();
-     String pattern =  pStore.getString(WorkbenchPreferences.PATTERN_PREFERENCE);
-     layout.setPattern(pattern);
-     layout.start();
+    layout.setContext(loggerContext);
+    String pattern = BeaglePreferencesPage.PATTERN_PREFERENCE_DEFAULT_VALUE;
+    if (Activator.INSTANCE != null) {
+      IPreferenceStore pStore = Activator.INSTANCE.getPreferenceStore();
+      pattern = pStore.getString(BeaglePreferencesPage.PATTERN_PREFERENCE);
+    }
+    layout.setPattern(pattern);
+    layout.start();
   }
 }