From 2d8f4698f2be284b67413e2f0fa490dadea3eb21 Mon Sep 17 00:00:00 2001
From: Markus Schorn <markus.schorn@windriver.com>
Date: Fri, 6 Apr 2007 15:53:50 +0000
Subject: [PATCH] Fix for 176389, preference UI for cache sizes.

---
 .../core/pdom/indexer/IndexerPreferences.java |   7 +
 .../core/CCorePreferenceInitializer.java      |   4 +-
 core/org.eclipse.cdt.ui/plugin.properties     |   1 -
 core/org.eclipse.cdt.ui/plugin.xml            |   5 -
 .../ui/preferences/CParserPreferencePage.java |   5 +-
 .../ui/preferences/IndexerPreferencePage.java |  25 ++-
 .../cdt/ui/dialogs/AbstractIndexerPage.java   |   8 +-
 .../cdt/ui/dialogs/CacheSizeBlock.java        | 175 ++++++++++++++++++
 .../eclipse/cdt/ui/dialogs/IndexerBlock.java  |  31 +++-
 .../org/eclipse/cdt/ui/dialogs/Messages.java  |  30 +++
 .../cdt/ui/dialogs/messages.properties        |   5 +
 11 files changed, 273 insertions(+), 23 deletions(-)
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/CacheSizeBlock.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/Messages.java
 create mode 100644 core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/messages.properties

diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/IndexerPreferences.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/IndexerPreferences.java
index 7098315be3f..556993c6fd7 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/IndexerPreferences.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/IndexerPreferences.java
@@ -136,6 +136,13 @@ public class IndexerPreferences {
 		return props;
 	}
 	
+	public static Properties getDefaultIndexerProperties() {
+		Preferences prefs= getDefaultPreferences();
+		Properties props= new Properties();
+		addProperties(prefs, props);
+		return props;
+	}
+		
 	/**
 	 * Adds or changes indexer properties for a project.
 	 */
diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/core/CCorePreferenceInitializer.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/core/CCorePreferenceInitializer.java
index d5ff529f0af..9be56923124 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/core/CCorePreferenceInitializer.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/core/CCorePreferenceInitializer.java
@@ -19,6 +19,7 @@ import java.util.Map;
 import org.eclipse.cdt.core.CCorePlugin;
 import org.eclipse.cdt.core.CCorePreferenceConstants;
 import org.eclipse.cdt.core.formatter.DefaultCodeFormatterConstants;
+import org.eclipse.cdt.core.parser.CodeReaderCache;
 import org.eclipse.cdt.internal.core.model.CModelManager;
 import org.eclipse.cdt.internal.core.pdom.indexer.IndexerPreferences;
 import org.eclipse.core.runtime.preferences.AbstractPreferenceInitializer;
@@ -44,8 +45,9 @@ public class CCorePreferenceInitializer extends AbstractPreferenceInitializer {
 		defaultOptionsMap.put(CCorePreferenceConstants.CODE_FORMATTER, CCorePreferenceConstants.DEFAULT_CODE_FORMATTER); 
 		defaultOptionsMap.put(CCorePreferenceConstants.INDEX_DB_CACHE_SIZE_PCT, CCorePreferenceConstants.DEFAULT_INDEX_DB_CACHE_SIZE_PCT); 
 		defaultOptionsMap.put(CCorePreferenceConstants.MAX_INDEX_DB_CACHE_SIZE_MB, CCorePreferenceConstants.DEFAULT_MAX_INDEX_DB_CACHE_SIZE_MB); 
-
 		defaultOptionsMap.put(CCorePreferenceConstants.WORKSPACE_LANGUAGE_MAPPINGS, CCorePreferenceConstants.DEFAULT_WORKSPACE_LANGUAGE_MAPPINGS);
+		defaultOptionsMap.put(CodeReaderCache.CODE_READER_BUFFER, CodeReaderCache.DEFAULT_CACHE_SIZE_IN_MB_STRING);
+
 		// Store default values to default preferences
 	 	IEclipsePreferences defaultPreferences = ((IScopeContext) new DefaultScope()).getNode(CCorePlugin.PLUGIN_ID);
 		for (Iterator iter = defaultOptionsMap.entrySet().iterator(); iter.hasNext();) {
diff --git a/core/org.eclipse.cdt.ui/plugin.properties b/core/org.eclipse.cdt.ui/plugin.properties
index ec7ec8e64f9..622af1d71b2 100644
--- a/core/org.eclipse.cdt.ui/plugin.properties
+++ b/core/org.eclipse.cdt.ui/plugin.properties
@@ -257,7 +257,6 @@ HideMacrodirective.description= Hides Macro directives
 WorkInProgress.name=Work In Progress
 
 CDTSearch.name=Search
-CDTParser.name=Parser
 
 CDTIndexerProperty.name=C/C++ Indexer
 
diff --git a/core/org.eclipse.cdt.ui/plugin.xml b/core/org.eclipse.cdt.ui/plugin.xml
index 89ff1db9896..46827c60cb9 100644
--- a/core/org.eclipse.cdt.ui/plugin.xml
+++ b/core/org.eclipse.cdt.ui/plugin.xml
@@ -669,11 +669,6 @@
             class="org.eclipse.cdt.internal.ui.preferences.CFileTypesPreferencePage"
             id="org.eclipse.cdt.ui.preferences.CFileTypesPreferences">
       </page>
-      <page
-            class="org.eclipse.cdt.internal.ui.preferences.CParserPreferencePage"
-            category="org.eclipse.cdt.ui.preferences.CPluginPreferencePage"
-            name="%CDTParser.name"
-            id="org.eclipse.cdt.ui.preferences.CParserPreferencePage"/>
       <page
             name="%appearancePrefName"
             category="org.eclipse.cdt.ui.preferences.CPluginPreferencePage"
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/CParserPreferencePage.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/CParserPreferencePage.java
index 1ee098e9930..f0de907ff4b 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/CParserPreferencePage.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/CParserPreferencePage.java
@@ -1,5 +1,5 @@
 /**********************************************************************
- * Copyright (c) 2005 IBM Corporation and others.
+ * Copyright (c) 2005, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -7,6 +7,7 @@
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
+ *     Markus Schorn (Wind River Systems)
  *******************************************************************************/
 package org.eclipse.cdt.internal.ui.preferences;
 
@@ -34,6 +35,8 @@ import org.eclipse.ui.IWorkbenchPreferencePage;
 
 /**
  * @author dsteffle
+ * @deprecated the one preference found on the page was moved to the 
+ * indexer preference page.
  */
 public class CParserPreferencePage extends PreferencePage implements
 		IWorkbenchPreferencePage {
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/IndexerPreferencePage.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/IndexerPreferencePage.java
index fbea59323c3..5558408a098 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/IndexerPreferencePage.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/IndexerPreferencePage.java
@@ -17,12 +17,14 @@ import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.core.runtime.Preferences;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.swt.SWT;
-import org.eclipse.swt.layout.FillLayout;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;
 
+import org.eclipse.cdt.ui.dialogs.CacheSizeBlock;
 import org.eclipse.cdt.ui.dialogs.ICOptionContainer;
 import org.eclipse.cdt.ui.dialogs.IndexerBlock;
 
@@ -30,16 +32,21 @@ public class IndexerPreferencePage extends PreferencePage implements
 		IWorkbenchPreferencePage, ICOptionContainer {
 
 	private IndexerBlock fOptionBlock;
+	private CacheSizeBlock fCacheBlock;
 	
 	public IndexerPreferencePage(){
 		fOptionBlock = new IndexerBlock();
+		fCacheBlock= new CacheSizeBlock(this);
 	}
 	
 	protected Control createContents(Composite parent) {
 		Composite composite = new Composite(parent, SWT.NONE);
-		composite.setLayout(new FillLayout());
+		composite.setLayout(new GridLayout());
+		GridData gd= new GridData();
+		composite.setLayoutData(gd);
 	
 		fOptionBlock.createControl(composite);
+		fCacheBlock.createControl(composite);
 		
 		return composite;
 	}
@@ -48,6 +55,18 @@ public class IndexerPreferencePage extends PreferencePage implements
 	}
 
 	public void updateContainer() {
+		if (!fOptionBlock.isValid()) {
+			setErrorMessage(fOptionBlock.getErrorMessage());
+			setValid(false);
+		}
+		else if (!fCacheBlock.isValid()) {
+			setErrorMessage(fCacheBlock.getErrorMessage());
+			setValid(false);
+		}
+		else {
+			setErrorMessage(null);
+			setValid(true);
+		}
 	}
 
 	public IProject getProject() {
@@ -61,11 +80,13 @@ public class IndexerPreferencePage extends PreferencePage implements
 	public boolean performOk() {
 		try {
 			fOptionBlock.performApply(new NullProgressMonitor());
+			fCacheBlock.performApply(new NullProgressMonitor());
 		} catch (CoreException e) {}
 		return true;
 	}
 	
 	public void performDefaults() {
 		fOptionBlock.performDefaults();
+		fCacheBlock.performDefaults();
 	}
 }
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/AbstractIndexerPage.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/AbstractIndexerPage.java
index bb6f0e924c5..cef684153e4 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/AbstractIndexerPage.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/AbstractIndexerPage.java
@@ -15,9 +15,9 @@ import java.util.Properties;
 
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.runtime.IProgressMonitor;
-import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Label;
@@ -142,10 +142,10 @@ public abstract class AbstractIndexerPage extends AbstractCOptionPage {
 	}
 
 	private Text createParseUpFrontTextField(Composite page) {
-		new Label(page, SWT.NONE);
-		ControlFactory.createLabel(page, DialogsMessages.AbstractIndexerPage_indexUpFront);
+		Label l= ControlFactory.createLabel(page, DialogsMessages.AbstractIndexerPage_indexUpFront);
+		((GridData) l.getLayoutData()).verticalIndent=5;
 		return ControlFactory.createTextField(page);
-	}
+	} 
 
 	private Button createAllFilesButton(Composite page) {
 		return ControlFactory.createCheckBox(page, INDEX_ALL_FILES);
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/CacheSizeBlock.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/CacheSizeBlock.java
new file mode 100644
index 00000000000..c0ceee2e39a
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/CacheSizeBlock.java
@@ -0,0 +1,175 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/ 
+package org.eclipse.cdt.ui.dialogs;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.preferences.InstanceScope;
+import org.eclipse.jface.preference.FieldEditor;
+import org.eclipse.jface.preference.IntegerFieldEditor;
+import org.eclipse.jface.util.IPropertyChangeListener;
+import org.eclipse.jface.util.PropertyChangeEvent;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Group;
+import org.eclipse.swt.widgets.Label;
+import org.eclipse.ui.preferences.ScopedPreferenceStore;
+
+import org.eclipse.cdt.core.CCorePlugin;
+import org.eclipse.cdt.core.CCorePreferenceConstants;
+import org.eclipse.cdt.core.dom.CDOM;
+import org.eclipse.cdt.core.parser.CodeReaderCache;
+import org.eclipse.cdt.core.parser.ICodeReaderCache;
+import org.eclipse.cdt.utils.ui.controls.ControlFactory;
+
+/**
+ * This OptionPage is used in the IndexerPreference page to allow for adjusting
+ * various parsing related caches.
+ */
+public class CacheSizeBlock extends AbstractCOptionPage {
+	private IntegerFieldEditor fDBLimitPct;
+	private IntegerFieldEditor fDBAbsoluteLimit;
+	private IntegerFieldEditor fCodeReaderLimit;
+    
+    private IPropertyChangeListener validityChangeListener = new IPropertyChangeListener() {
+        public void propertyChange(PropertyChangeEvent event) {
+            if (event.getProperty().equals(FieldEditor.IS_VALID)) {
+				updateValidState();
+			}
+        }
+    };
+
+    public CacheSizeBlock(ICOptionContainer container){
+    	setContainer(container);
+    }
+
+    public void createControl(Composite parent) {
+    	GridData gd;
+    	GridLayout gl;
+        Composite composite = ControlFactory.createComposite(parent, 1);
+		gl=  (GridLayout)composite.getLayout();
+		int hindent= gl.marginWidth + gl.marginLeft;
+		int vindent= gl.marginHeight + gl.marginTop;
+		gl.marginWidth= 0;
+		
+		gd= (GridData) composite.getLayoutData();
+		gd.grabExcessHorizontalSpace= false;
+		gd.horizontalAlignment= GridData.FILL;
+
+		setControl(composite);
+      
+		Group group= ControlFactory.createGroup(composite, Messages.CacheSizeBlock_cacheLimitGroup, 1);
+		gd= (GridData) group.getLayoutData();
+		gd.grabExcessHorizontalSpace= true;
+		gd.horizontalAlignment= GridData.FILL;
+		
+		Composite cacheComp= ControlFactory.createComposite(group, 3);
+
+		Label dbCacheLabel= ControlFactory.createLabel(cacheComp, Messages.CacheSizeBlock_indexDatabaseCache);
+		fDBLimitPct= new IntegerFieldEditor(CCorePreferenceConstants.INDEX_DB_CACHE_SIZE_PCT, Messages.CacheSizeBlock_limitRelativeToMaxHeapSize, cacheComp, 3);
+		fDBLimitPct.setValidRange(1, 40);
+		ControlFactory.createLabel(cacheComp, "%"); //$NON-NLS-1$
+
+		fDBAbsoluteLimit= new IntegerFieldEditor(CCorePreferenceConstants.MAX_INDEX_DB_CACHE_SIZE_MB, Messages.CacheSizeBlock_absoluteLimit, cacheComp, 4);
+		fDBAbsoluteLimit.setValidRange(1, 10000);
+		ControlFactory.createLabel(cacheComp, "mb"); //$NON-NLS-1$
+		
+		Label codeReaderLabel= ControlFactory.createLabel(cacheComp, Messages.CacheSizeBlock_headerFileCache);
+		fCodeReaderLimit= new IntegerFieldEditor(CodeReaderCache.CODE_READER_BUFFER, Messages.CacheSizeBlock_absoluteLimit, cacheComp, 4);
+		fCodeReaderLimit.setValidRange(1, 10000);
+		ControlFactory.createLabel(cacheComp, "mb"); //$NON-NLS-1$
+		
+		gl= (GridLayout) cacheComp.getLayout();
+		gl.numColumns= 3;
+		gl.makeColumnsEqualWidth= false;
+		gl.marginLeft= 0;
+
+		gd= (GridData) dbCacheLabel.getLayoutData();
+		gd.horizontalSpan= 3;
+
+		gd= (GridData) codeReaderLabel.getLayoutData();
+		gd.verticalIndent= vindent;
+		gd.horizontalSpan= 3;
+
+		gd= new GridData();
+		gd.grabExcessHorizontalSpace= true;
+		gd.horizontalAlignment= GridData.FILL;
+		gd.horizontalIndent= hindent;
+		fDBLimitPct.getLabelControl(cacheComp).setLayoutData(gd);
+
+		gd= new GridData();
+		gd.grabExcessHorizontalSpace= true;
+		gd.horizontalAlignment= GridData.FILL;
+		gd.horizontalIndent= hindent;
+		fDBAbsoluteLimit.getLabelControl(cacheComp).setLayoutData(gd);
+
+		gd= new GridData();
+		gd.grabExcessHorizontalSpace= true;
+		gd.horizontalAlignment= GridData.FILL;
+		gd.horizontalIndent= hindent;
+		fCodeReaderLimit.getLabelControl(cacheComp).setLayoutData(gd);
+
+		initializeValues();
+    }
+
+    private void initializeValues() {
+    	ScopedPreferenceStore prefStore= new ScopedPreferenceStore(new InstanceScope(), CCorePlugin.PLUGIN_ID);
+
+    	fDBLimitPct.setPreferenceStore(prefStore);
+    	fDBLimitPct.setPropertyChangeListener(validityChangeListener);
+    	fDBAbsoluteLimit.setPreferenceStore(prefStore);
+    	fDBAbsoluteLimit.setPropertyChangeListener(validityChangeListener);
+    	fCodeReaderLimit.setPreferenceStore(prefStore);
+    	fCodeReaderLimit.setPropertyChangeListener(validityChangeListener);
+
+		fDBLimitPct.load();
+		fDBAbsoluteLimit.load();
+		fCodeReaderLimit.load();
+	}
+
+	public void performApply(IProgressMonitor monitor) throws CoreException {
+		fDBLimitPct.store();
+		fDBAbsoluteLimit.store();
+		fCodeReaderLimit.store();
+		
+		// code reader cache does not listen for pref-changes, help out:
+		ICodeReaderCache cache = CDOM.getInstance().getCodeReaderFactory(CDOM.PARSE_SAVED_RESOURCES).getCodeReaderCache();
+		if (cache instanceof CodeReaderCache) {
+			((CodeReaderCache)cache).setCacheSize(fCodeReaderLimit.getIntValue());
+		}
+    }
+
+    public void performDefaults() {
+    	fDBLimitPct.loadDefault();
+		fDBAbsoluteLimit.loadDefault();
+		fCodeReaderLimit.loadDefault();
+    }
+    
+    private void updateValidState() {
+    	if (!fDBLimitPct.isValid()) {
+    		setErrorMessage(fDBLimitPct.getErrorMessage());
+    		setValid(false);
+    	}
+    	else if (!fDBAbsoluteLimit.isValid()) {
+    		setErrorMessage(fDBAbsoluteLimit.getErrorMessage());
+    		setValid(false);
+    	}
+    	else if (!fCodeReaderLimit.isValid()) {
+    		setErrorMessage(fCodeReaderLimit.getErrorMessage());
+    		setValid(false);
+    	}
+    	else {
+    		setValid(true);
+    	}
+        getContainer().updateContainer();
+    }
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/IndexerBlock.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/IndexerBlock.java
index f187b57a5b8..cbe730c9772 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/IndexerBlock.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/IndexerBlock.java
@@ -70,6 +70,7 @@ public class IndexerBlock extends AbstractCOptionPage {
     private Properties				fCurrentProperties;
 	private ControlEnableState 		fEnableState;
 	private Composite fPreferenceContent;
+	private Composite fParent;
     
     public IndexerBlock(){
 		super(INDEXER_LABEL);
@@ -113,12 +114,12 @@ public class IndexerBlock extends AbstractCOptionPage {
     }
 
     public void createControl(Composite parent) {
+		fParent= parent;
+
         Composite composite = ControlFactory.createComposite(parent, 1);
 		GridLayout layout=  ((GridLayout)composite.getLayout());
-		layout.marginHeight= 0;
 		layout.marginWidth= 0;
-		layout.verticalSpacing= 0;
-		layout.horizontalSpacing= GridData.FILL_HORIZONTAL;
+		
 		composite.setLayoutData(null);
 		setControl(composite);
       
@@ -132,15 +133,17 @@ public class IndexerBlock extends AbstractCOptionPage {
 		}		
 
 		fPreferenceContent= ControlFactory.createComposite(composite, 1);
-		layout=  ((GridLayout)fPreferenceContent.getLayout());
+		layout=  (GridLayout)fPreferenceContent.getLayout();
 		layout.marginHeight= 0;
 		layout.marginWidth= 0;
+		GridData gd= (GridData) fPreferenceContent.getLayoutData();
+		gd.horizontalIndent= 0;
 		
         Composite isc = ControlFactory.createComposite(fPreferenceContent, 1);
         GridLayout gridLayout = ((GridLayout)isc.getLayout());
         gridLayout.makeColumnsEqualWidth= false;
 		gridLayout.marginHeight = 0;
-		gridLayout.marginTop = 5;
+		gridLayout.marginWidth= 0;
 
 		// add combo to select indexer
 		Group group= ControlFactory.createGroup(isc,INDEXER_COMBO_LABEL, 1);
@@ -159,7 +162,7 @@ public class IndexerBlock extends AbstractCOptionPage {
         initializeScope();
 		initializeIndexerCombo();
 		onPreferenceScopeChange();
-        parent.layout(true);
+        fParent.layout(true);
     }
 
 	private void enablePreferenceContent(boolean enable) {
@@ -221,6 +224,10 @@ public class IndexerBlock extends AbstractCOptionPage {
     		}
     		fCurrentProperties= props;
 		}
+		updateForNewProperties(scope);
+	}
+
+	private void updateForNewProperties(int scope) {
 		String indexerId= fCurrentProperties.getProperty(IndexerPreferences.KEY_INDEXER_ID);
 		String indexerName = getIndexerName(indexerId);
         String[] indexerList = fIndexersComboBox.getItems();
@@ -266,6 +273,7 @@ public class IndexerBlock extends AbstractCOptionPage {
                 page.setContainer(getContainer());
                 page.createControl(fIndexerPageComposite);
                 fIndexerPageComposite.layout(true);
+                fParent.layout(true);
             }
         }
         
@@ -362,9 +370,14 @@ public class IndexerBlock extends AbstractCOptionPage {
 
     public void performDefaults() {
     	fCurrentProperties= null;
-    	fPrefScopeBlock.setInstanceScope();
-    	onPreferenceScopeChange();
-    	
+    	if (fPrefScopeBlock != null) {
+    		fPrefScopeBlock.setInstanceScope();
+        	onPreferenceScopeChange();
+    	}
+    	else {
+    		fCurrentProperties= IndexerPreferences.getDefaultIndexerProperties();
+    		updateForNewProperties(IndexerPreferences.SCOPE_INSTANCE);
+    	}
     }
 
     /**
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/Messages.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/Messages.java
new file mode 100644
index 00000000000..9df9ff3a5fa
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/Messages.java
@@ -0,0 +1,30 @@
+/*******************************************************************************
+ * Copyright (c) 2007 Wind River Systems, Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Markus Schorn - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.cdt.ui.dialogs;
+
+import org.eclipse.osgi.util.NLS;
+
+public class Messages extends NLS {
+	private static final String BUNDLE_NAME = "org.eclipse.cdt.ui.dialogs.messages"; //$NON-NLS-1$
+	public static String CacheSizeBlock_absoluteLimit;
+	public static String CacheSizeBlock_cacheLimitGroup;
+	public static String CacheSizeBlock_headerFileCache;
+	public static String CacheSizeBlock_indexDatabaseCache;
+	public static String CacheSizeBlock_limitRelativeToMaxHeapSize;
+	static {
+		// initialize resource bundle
+		NLS.initializeMessages(BUNDLE_NAME, Messages.class);
+	}
+
+	private Messages() {
+	}
+}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/messages.properties b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/messages.properties
new file mode 100644
index 00000000000..f332adbf629
--- /dev/null
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/dialogs/messages.properties
@@ -0,0 +1,5 @@
+CacheSizeBlock_cacheLimitGroup=Cache limits
+CacheSizeBlock_indexDatabaseCache=Index database cache:
+CacheSizeBlock_limitRelativeToMaxHeapSize=Limit relative to the maximum heap size:
+CacheSizeBlock_absoluteLimit=Absolute Limit:
+CacheSizeBlock_headerFileCache=Header file cache (used by full indexer and refactoring):