ruta-ep-ide-ui/src/main/java/org/apache/uima/ruta/ide/ui/text/folding/RutaFoldingPreferenceBlock.java - uima-ruta - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License.  You may obtain a copy of the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
  */

 package org.apache.uima.ruta.ide.ui.text.folding;

 import java.util.ArrayList;

 import org.apache.uima.ruta.ide.ui.RutaPreferenceConstants;
 import org.eclipse.dltk.ui.PreferenceConstants;
 import org.eclipse.dltk.ui.preferences.AbstractConfigurationBlock;
 import org.eclipse.dltk.ui.preferences.OverlayPreferenceStore;
 import org.eclipse.dltk.ui.preferences.OverlayPreferenceStore.OverlayKey;
 import org.eclipse.dltk.ui.preferences.PreferencesMessages;
 import org.eclipse.dltk.ui.text.folding.IFoldingPreferenceBlock;
 import org.eclipse.dltk.ui.util.PixelConverter;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IInputValidator;
 import org.eclipse.jface.dialogs.InputDialog;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.jface.resource.JFaceResources;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.ListViewer;
 import org.eclipse.jface.window.Window;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;

 public class RutaFoldingPreferenceBlock extends AbstractConfigurationBlock implements
         IFoldingPreferenceBlock {

   protected class ListBlock {
     private ListViewer fList;

     private String fKey;

     private Button fAddButton;

     private Button fRemoveButton;

     public ListBlock(Composite parent, String key) {
       fKey = key;
       createControl(parent);
     }

     private Control createControl(Composite parent) {
       Font font = parent.getFont();
       Composite comp = new Composite(parent, SWT.NONE);
       GridLayout topLayout = new GridLayout();
       topLayout.numColumns = 2;
       topLayout.marginHeight = 0;
       topLayout.marginWidth = 0;
       comp.setLayout(topLayout);
       GridData gd = new GridData(GridData.FILL_BOTH);
       comp.setLayoutData(gd);
       fList = new ListViewer(comp);
       gd = new GridData(GridData.FILL_BOTH);
       gd.heightHint = 6;
       fList.getControl().setLayoutData(gd);
       Composite pathButtonComp = new Composite(comp, SWT.NONE);
       GridLayout pathButtonLayout = new GridLayout();
       pathButtonLayout.marginHeight = 0;
       pathButtonLayout.marginWidth = 0;
       pathButtonComp.setLayout(pathButtonLayout);
       gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL);
       pathButtonComp.setLayoutData(gd);
       pathButtonComp.setFont(font);
       fAddButton = createPushButton(pathButtonComp,
               RutaFoldingMessages.RutaFoldingPreferenceBlock_0);
       fAddButton.addSelectionListener(new SelectionListener() {
         public void widgetDefaultSelected(SelectionEvent e) {
         }

         public void widgetSelected(SelectionEvent e) {
           IInputValidator validator = new IInputValidator() {
             public String isValid(String newText) {
               if (newText.trim().length() > 0 && newText.matches("[_a-zA-Z]*")) //$NON-NLS-1$
                 return null;
               return RutaFoldingMessages.RutaFoldingPreferenceBlock_2;
             }
           };
           InputDialog dlg = new InputDialog(null, RutaFoldingMessages.RutaFoldingPreferenceBlock_3,
                   RutaFoldingMessages.RutaFoldingPreferenceBlock_4, "", validator);
           if (dlg.open() == Window.OK) {
             fList.add(dlg.getValue());
             save();
           }
         }
       });
       fRemoveButton = createPushButton(pathButtonComp,
               RutaFoldingMessages.RutaFoldingPreferenceBlock_6);
       fRemoveButton.addSelectionListener(new SelectionListener() {
         public void widgetDefaultSelected(SelectionEvent e) {
         }

         public void widgetSelected(SelectionEvent e) {
           ISelection s = fList.getSelection();
           if (s instanceof IStructuredSelection) {
             IStructuredSelection sel = (IStructuredSelection) s;
             fList.remove(sel.toArray());
             save();
           }
         }
       });
       return comp;
     }

     protected Button createPushButton(Composite parent, String label) {
       Button button = new Button(parent, SWT.PUSH);
       button.setFont(parent.getFont());
       if (label != null) {
         button.setText(label);
       }
       GridData gd = new GridData();
       button.setLayoutData(gd);
       gd.widthHint = getButtonWidthHint(button);
       gd.horizontalAlignment = GridData.FILL;
       return button;
     }

     /**
      * Returns a width hint for a button control.
      */
     public int getButtonWidthHint(Button button) {
       button.setFont(JFaceResources.getDialogFont());
       PixelConverter converter = new PixelConverter(button);
       int widthHint = converter.convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
       return Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
     }

     private String[] getEntries() {
       return fList.getList().getItems();
     }

     private void setEntries(String items[]) {
       fList.remove(fList.getList().getItems());
       for (int i = 0; i < items.length; i++) {
         if (items[i].trim().length() > 0)
           fList.add(items[i]);
       }
     }

     public void save() {
       String items[] = getEntries();
       StringBuffer buf = new StringBuffer();
       for (int i = 0; i < items.length; i++) {
         buf.append(items[i]);
         if (i != items.length - 1)
           buf.append(","); //$NON-NLS-1$
       }
       getPreferenceStore().setValue(fKey, buf.toString());
     }

     public void initialize() {
       String val = getPreferenceStore().getString(fKey);
       if (val != null) {
         String items[] = val.split(","); //$NON-NLS-1$
         setEntries(items);
       }

     }

     public void performDefault() {
       String val = getPreferenceStore().getDefaultString(fKey);
       if (val != null) {
         String items[] = val.split(","); //$NON-NLS-1$
         setEntries(items);
       }
     }
   }

   private ListBlock fExcludePatterns;

   private ListBlock fIncludePatterns;

   private OverlayPreferenceStore fOverlayStore;

   private OverlayKey[] fKeys;

   public RutaFoldingPreferenceBlock(OverlayPreferenceStore store, PreferencePage mainPreferencePage) {
     super(store, mainPreferencePage);
     fOverlayStore = store;
     fKeys = createKeys();
     fOverlayStore.addKeys(fKeys);
   }

   private OverlayKey[] createKeys() {
     ArrayList overlayKeys = new ArrayList();
     overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.INT,
             RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS));
     overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.INT,
             PreferenceConstants.EDITOR_FOLDING_LINES_LIMIT));
     overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING,
             RutaPreferenceConstants.EDITOR_FOLDING_INCLUDE_LIST));
     overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING,
             RutaPreferenceConstants.EDITOR_FOLDING_EXCLUDE_LIST));
     overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN,
             RutaPreferenceConstants.EDITOR_FOLDING_INIT_BLOCKS));
     overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN,
             RutaPreferenceConstants.EDITOR_FOLDING_INIT_COMMENTS));
     overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN,
             RutaPreferenceConstants.EDITOR_FOLDING_INIT_NAMESPACES));
     overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN,
             PreferenceConstants.EDITOR_COMMENTS_FOLDING_ENABLED));
     overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN,
             RutaPreferenceConstants.EDITOR_FOLDING_COMMENTS_WITH_NEWLINES));
     OverlayPreferenceStore.OverlayKey[] keys = new OverlayPreferenceStore.OverlayKey[overlayKeys
             .size()];
     overlayKeys.toArray(keys);
     return keys;
   }

   public Control createControl(Composite composite) {
     Composite inner = new Composite(composite, SWT.NONE);
     GridLayout layout = new GridLayout();
     layout.numColumns = 1;
     inner.setLayout(layout);

     Composite blockFolding = createSubsection(inner, null,
             RutaFoldingMessages.RutaFoldingPreferenceBlock_10);
     blockFolding.setLayout(new GridLayout());

     addRadioButton(blockFolding, RutaFoldingMessages.RutaFoldingPreferenceBlock_11,
             RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS,
             RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS_OFF);
     addRadioButton(blockFolding, RutaFoldingMessages.RutaFoldingPreferenceBlock_12,
             RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS,
             RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS_EXCLUDE);
     fExcludePatterns = new ListBlock(blockFolding,
             RutaPreferenceConstants.EDITOR_FOLDING_EXCLUDE_LIST);
     addRadioButton(blockFolding, RutaFoldingMessages.RutaFoldingPreferenceBlock_13,
             RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS,
             RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS_INCLUDE);
     fIncludePatterns = new ListBlock(blockFolding,
             RutaPreferenceConstants.EDITOR_FOLDING_INCLUDE_LIST);

     IInputValidator val = new IInputValidator() {

       public String isValid(String number) {
         if (number.length() == 0) {
           return PreferencesMessages.DLTKEditorPreferencePage_empty_input;
         } else {
           try {
             int value = Integer.parseInt(number);
             if (value < 2)
               return "You may input numbers >= 2.";
           } catch (NumberFormatException e) {
             return "Input is not a number";
           }
         }
         return null;
       }

     };

     addLabelledTextField(blockFolding, "Minimal amount of lines to be folded(>=2):",
             PreferenceConstants.EDITOR_FOLDING_LINES_LIMIT, 3, 1, true, val);

     Composite commentFolding = createSubsection(inner, null,
             RutaFoldingMessages.RutaFoldingPreferenceBlock_14);
     commentFolding.setLayout(new GridLayout());

     addCheckBox(commentFolding, RutaFoldingMessages.RutaFoldingPreferenceBlock_15,
             PreferenceConstants.EDITOR_COMMENTS_FOLDING_ENABLED, 0);

     Composite initialFolding = createSubsection(inner, null,
             RutaFoldingMessages.RutaFoldingPreferenceBlock_16);
     initialFolding.setLayout(new GridLayout());

     addCheckBox(initialFolding, RutaFoldingMessages.DefaultFoldingPreferenceBlock_headers,
             RutaPreferenceConstants.EDITOR_FOLDING_INIT_COMMENTS, 0);
     addCheckBox(initialFolding, RutaFoldingMessages.DefaultFoldingPreferenceBlock_innerTypes,
             RutaPreferenceConstants.EDITOR_FOLDING_INIT_NAMESPACES, 0);
     addCheckBox(initialFolding, RutaFoldingMessages.DefaultFoldingPreferenceBlock_methods,
             RutaPreferenceConstants.EDITOR_FOLDING_INIT_BLOCKS, 0);

     return inner;
   }

   @Override
   public void initialize() {
     super.initialize();
     fExcludePatterns.initialize();
     fIncludePatterns.initialize();
   }

   @Override
   public void performDefaults() {
     super.performDefaults();
     fExcludePatterns.performDefault();
     fIncludePatterns.performDefault();
   }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you under the Apache License, Version 2.0 (the
	* "License"); you may not use this file except in compliance
	* with the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing,
	* software distributed under the License is distributed on an
	* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	* KIND, either express or implied. See the License for the
	* specific language governing permissions and limitations
	* under the License.
	*/

	package org.apache.uima.ruta.ide.ui.text.folding;

	import java.util.ArrayList;

	import org.apache.uima.ruta.ide.ui.RutaPreferenceConstants;
	import org.eclipse.dltk.ui.PreferenceConstants;
	import org.eclipse.dltk.ui.preferences.AbstractConfigurationBlock;
	import org.eclipse.dltk.ui.preferences.OverlayPreferenceStore;
	import org.eclipse.dltk.ui.preferences.OverlayPreferenceStore.OverlayKey;
	import org.eclipse.dltk.ui.preferences.PreferencesMessages;
	import org.eclipse.dltk.ui.text.folding.IFoldingPreferenceBlock;
	import org.eclipse.dltk.ui.util.PixelConverter;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IInputValidator;
	import org.eclipse.jface.dialogs.InputDialog;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.jface.resource.JFaceResources;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.ListViewer;
	import org.eclipse.jface.window.Window;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;

	public class RutaFoldingPreferenceBlock extends AbstractConfigurationBlock implements
	IFoldingPreferenceBlock {

	protected class ListBlock {
	private ListViewer fList;

	private String fKey;

	private Button fAddButton;

	private Button fRemoveButton;

	public ListBlock(Composite parent, String key) {
	fKey = key;
	createControl(parent);
	}

	private Control createControl(Composite parent) {
	Font font = parent.getFont();
	Composite comp = new Composite(parent, SWT.NONE);
	GridLayout topLayout = new GridLayout();
	topLayout.numColumns = 2;
	topLayout.marginHeight = 0;
	topLayout.marginWidth = 0;
	comp.setLayout(topLayout);
	GridData gd = new GridData(GridData.FILL_BOTH);
	comp.setLayoutData(gd);
	fList = new ListViewer(comp);
	gd = new GridData(GridData.FILL_BOTH);
	gd.heightHint = 6;
	fList.getControl().setLayoutData(gd);
	Composite pathButtonComp = new Composite(comp, SWT.NONE);
	GridLayout pathButtonLayout = new GridLayout();
	pathButtonLayout.marginHeight = 0;
	pathButtonLayout.marginWidth = 0;
	pathButtonComp.setLayout(pathButtonLayout);
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.HORIZONTAL_ALIGN_FILL);
	pathButtonComp.setLayoutData(gd);
	pathButtonComp.setFont(font);
	fAddButton = createPushButton(pathButtonComp,
	RutaFoldingMessages.RutaFoldingPreferenceBlock_0);
	fAddButton.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {
	}

	public void widgetSelected(SelectionEvent e) {
	IInputValidator validator = new IInputValidator() {
	public String isValid(String newText) {
	if (newText.trim().length() > 0 && newText.matches("[_a-zA-Z]*")) //$NON-NLS-1$
	return null;
	return RutaFoldingMessages.RutaFoldingPreferenceBlock_2;
	}
	};
	InputDialog dlg = new InputDialog(null, RutaFoldingMessages.RutaFoldingPreferenceBlock_3,
	RutaFoldingMessages.RutaFoldingPreferenceBlock_4, "", validator);
	if (dlg.open() == Window.OK) {
	fList.add(dlg.getValue());
	save();
	}
	}
	});
	fRemoveButton = createPushButton(pathButtonComp,
	RutaFoldingMessages.RutaFoldingPreferenceBlock_6);
	fRemoveButton.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {
	}

	public void widgetSelected(SelectionEvent e) {
	ISelection s = fList.getSelection();
	if (s instanceof IStructuredSelection) {
	IStructuredSelection sel = (IStructuredSelection) s;
	fList.remove(sel.toArray());
	save();
	}
	}
	});
	return comp;
	}

	protected Button createPushButton(Composite parent, String label) {
	Button button = new Button(parent, SWT.PUSH);
	button.setFont(parent.getFont());
	if (label != null) {
	button.setText(label);
	}
	GridData gd = new GridData();
	button.setLayoutData(gd);
	gd.widthHint = getButtonWidthHint(button);
	gd.horizontalAlignment = GridData.FILL;
	return button;
	}

	/**
	* Returns a width hint for a button control.
	*/
	public int getButtonWidthHint(Button button) {
	button.setFont(JFaceResources.getDialogFont());
	PixelConverter converter = new PixelConverter(button);
	int widthHint = converter.convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
	return Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
	}

	private String[] getEntries() {
	return fList.getList().getItems();
	}

	private void setEntries(String items[]) {
	fList.remove(fList.getList().getItems());
	for (int i = 0; i < items.length; i++) {
	if (items[i].trim().length() > 0)
	fList.add(items[i]);
	}
	}

	public void save() {
	String items[] = getEntries();
	StringBuffer buf = new StringBuffer();
	for (int i = 0; i < items.length; i++) {
	buf.append(items[i]);
	if (i != items.length - 1)
	buf.append(","); //$NON-NLS-1$
	}
	getPreferenceStore().setValue(fKey, buf.toString());
	}

	public void initialize() {
	String val = getPreferenceStore().getString(fKey);
	if (val != null) {
	String items[] = val.split(","); //$NON-NLS-1$
	setEntries(items);
	}

	}

	public void performDefault() {
	String val = getPreferenceStore().getDefaultString(fKey);
	if (val != null) {
	String items[] = val.split(","); //$NON-NLS-1$
	setEntries(items);
	}
	}
	}

	private ListBlock fExcludePatterns;

	private ListBlock fIncludePatterns;

	private OverlayPreferenceStore fOverlayStore;

	private OverlayKey[] fKeys;

	public RutaFoldingPreferenceBlock(OverlayPreferenceStore store, PreferencePage mainPreferencePage) {
	super(store, mainPreferencePage);
	fOverlayStore = store;
	fKeys = createKeys();
	fOverlayStore.addKeys(fKeys);
	}

	private OverlayKey[] createKeys() {
	ArrayList overlayKeys = new ArrayList();
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.INT,
	RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.INT,
	PreferenceConstants.EDITOR_FOLDING_LINES_LIMIT));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING,
	RutaPreferenceConstants.EDITOR_FOLDING_INCLUDE_LIST));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING,
	RutaPreferenceConstants.EDITOR_FOLDING_EXCLUDE_LIST));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN,
	RutaPreferenceConstants.EDITOR_FOLDING_INIT_BLOCKS));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN,
	RutaPreferenceConstants.EDITOR_FOLDING_INIT_COMMENTS));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN,
	RutaPreferenceConstants.EDITOR_FOLDING_INIT_NAMESPACES));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN,
	PreferenceConstants.EDITOR_COMMENTS_FOLDING_ENABLED));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN,
	RutaPreferenceConstants.EDITOR_FOLDING_COMMENTS_WITH_NEWLINES));
	OverlayPreferenceStore.OverlayKey[] keys = new OverlayPreferenceStore.OverlayKey[overlayKeys
	.size()];
	overlayKeys.toArray(keys);
	return keys;
	}

	public Control createControl(Composite composite) {
	Composite inner = new Composite(composite, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.numColumns = 1;
	inner.setLayout(layout);

	Composite blockFolding = createSubsection(inner, null,
	RutaFoldingMessages.RutaFoldingPreferenceBlock_10);
	blockFolding.setLayout(new GridLayout());

	addRadioButton(blockFolding, RutaFoldingMessages.RutaFoldingPreferenceBlock_11,
	RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS,
	RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS_OFF);
	addRadioButton(blockFolding, RutaFoldingMessages.RutaFoldingPreferenceBlock_12,
	RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS,
	RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS_EXCLUDE);
	fExcludePatterns = new ListBlock(blockFolding,
	RutaPreferenceConstants.EDITOR_FOLDING_EXCLUDE_LIST);
	addRadioButton(blockFolding, RutaFoldingMessages.RutaFoldingPreferenceBlock_13,
	RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS,
	RutaPreferenceConstants.EDITOR_FOLDING_BLOCKS_INCLUDE);
	fIncludePatterns = new ListBlock(blockFolding,
	RutaPreferenceConstants.EDITOR_FOLDING_INCLUDE_LIST);

	IInputValidator val = new IInputValidator() {

	public String isValid(String number) {
	if (number.length() == 0) {
	return PreferencesMessages.DLTKEditorPreferencePage_empty_input;
	} else {
	try {
	int value = Integer.parseInt(number);
	if (value < 2)
	return "You may input numbers >= 2.";
	} catch (NumberFormatException e) {
	return "Input is not a number";
	}
	}
	return null;
	}

	};

	addLabelledTextField(blockFolding, "Minimal amount of lines to be folded(>=2):",
	PreferenceConstants.EDITOR_FOLDING_LINES_LIMIT, 3, 1, true, val);

	Composite commentFolding = createSubsection(inner, null,
	RutaFoldingMessages.RutaFoldingPreferenceBlock_14);
	commentFolding.setLayout(new GridLayout());

	addCheckBox(commentFolding, RutaFoldingMessages.RutaFoldingPreferenceBlock_15,
	PreferenceConstants.EDITOR_COMMENTS_FOLDING_ENABLED, 0);

	Composite initialFolding = createSubsection(inner, null,
	RutaFoldingMessages.RutaFoldingPreferenceBlock_16);
	initialFolding.setLayout(new GridLayout());

	addCheckBox(initialFolding, RutaFoldingMessages.DefaultFoldingPreferenceBlock_headers,
	RutaPreferenceConstants.EDITOR_FOLDING_INIT_COMMENTS, 0);
	addCheckBox(initialFolding, RutaFoldingMessages.DefaultFoldingPreferenceBlock_innerTypes,
	RutaPreferenceConstants.EDITOR_FOLDING_INIT_NAMESPACES, 0);
	addCheckBox(initialFolding, RutaFoldingMessages.DefaultFoldingPreferenceBlock_methods,
	RutaPreferenceConstants.EDITOR_FOLDING_INIT_BLOCKS, 0);

	return inner;
	}

	@Override
	public void initialize() {
	super.initialize();
	fExcludePatterns.initialize();
	fIncludePatterns.initialize();
	}

	@Override
	public void performDefaults() {
	super.performDefaults();
	fExcludePatterns.performDefault();
	fIncludePatterns.performDefault();
	}
	}