ant/org.eclipse.ant.ui/Ant Tools Support/org/eclipse/ant/internal/ui/preferences/AntCodeFormatterPreferencePage.java - platform/eclipse.platform - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2004 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.ant.internal.ui.preferences;

 import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;

 import org.eclipse.ant.internal.ui.model.AntUIPlugin;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.jface.dialogs.DialogPage;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IMessageProvider;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 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;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;

 /*
  * The page to configure the code formatter options.
  */
 public class AntCodeFormatterPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

 	private OverlayPreferenceStore fOverlayStore;

 	private Map fCheckBoxes= new HashMap();
 	private SelectionListener fCheckBoxListener= new SelectionListener() {
 		public void widgetDefaultSelected(SelectionEvent e) {
 		}
 		public void widgetSelected(SelectionEvent e) {
 			Button button= (Button) e.widget;
 			fOverlayStore.setValue((String) fCheckBoxes.get(button), button.getSelection());
 		}
 	};

 	private Map fTextFields= new HashMap();
 	private ModifyListener fTextFieldListener= new ModifyListener() {
 		public void modifyText(ModifyEvent e) {
 			Text text= (Text) e.widget;
 			fOverlayStore.setValue((String) fTextFields.get(text), text.getText());
 		}
 	};

 	private Map fNumberFields= new HashMap();
 	private ModifyListener fNumberFieldListener= new ModifyListener() {
 		public void modifyText(ModifyEvent e) {
 			numberFieldChanged((Text) e.widget);
 		}
 	};

 	public AntCodeFormatterPreferencePage() {
 		setPreferenceStore(AntUIPlugin.getDefault().getPreferenceStore());
 		fOverlayStore= createOverlayStore();
 	}

 	private OverlayPreferenceStore createOverlayStore() {
 		List overlayKeys= new ArrayList();
 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.FORMATTER_WRAP_LONG));
 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.FORMATTER_ALIGN));
 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.FORMATTER_COMMENTS));
 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.FORMATTER_DELETE_BLANK_LINES));
 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.INT, AntEditorPreferenceConstants.FORMATTER_MAX_LINE_LENGTH));
 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.FORMATTER_TAB_CHAR));
 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.INT, AntEditorPreferenceConstants.FORMATTER_TAB_SIZE));

 		OverlayPreferenceStore.OverlayKey[] keys= new OverlayPreferenceStore.OverlayKey[overlayKeys.size()];
 		overlayKeys.toArray(keys);
 		return new OverlayPreferenceStore(getPreferenceStore(), keys);
 	}

 	private Button addCheckBox(Composite parent, String labelText, String key, int indentation) {
 		Button checkBox= new Button(parent, SWT.CHECK);
 		checkBox.setText(labelText);
 		checkBox.setFont(parent.getFont());

 		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		gd.horizontalIndent= indentation;
 		gd.horizontalSpan= 2;
 		checkBox.setLayoutData(gd);
 		checkBox.addSelectionListener(fCheckBoxListener);

 		fCheckBoxes.put(checkBox, key);

 		return checkBox;
 	}

 	/*
 	 * @see PreferencePage#createControl(Composite)
 	 */
 	public void createControl(Composite parent) {
 		super.createControl(parent);
 		//TODO set help
 		//WorkbenchHelp.setHelp(getControl(), "ANT_FORMATTER_PREFERENCE_PAGE"); //$NON-NLS-1$
 	}

 	protected Control createContents(Composite parent) {
 		initializeDialogUnits(parent);
 		fOverlayStore.load();
 		fOverlayStore.start();
 		int numColumns= 2;
 		Composite result= new Composite(parent, SWT.NONE);
 		GridLayout layout= new GridLayout();
 		layout.marginHeight= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
 		layout.marginWidth= 0;
 		layout.verticalSpacing= convertVerticalDLUsToPixels(10);
 		layout.horizontalSpacing= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
 		result.setLayout(layout);

 		Group indentationGroup= createGroup(numColumns, result, AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.0")); //$NON-NLS-1$

 		String labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.1"); //$NON-NLS-1$
 		String[] errorMessages= new String[]{AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.2"), AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.3")}; //$NON-NLS-1$ //$NON-NLS-2$
 		addTextField(indentationGroup, labelText, AntEditorPreferenceConstants.FORMATTER_TAB_SIZE, 3, 0, errorMessages);

 		labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.4"); //$NON-NLS-1$
 		addCheckBox(indentationGroup, labelText, AntEditorPreferenceConstants.FORMATTER_TAB_CHAR, 1);

 		Group wrappingGroup= createGroup(numColumns, result, AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.6")); //$NON-NLS-1$
 		labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.7"); //$NON-NLS-1$
 		errorMessages= new String[]{AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.8"), AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.9")}; //$NON-NLS-1$ //$NON-NLS-2$
 		addTextField(wrappingGroup, labelText, AntEditorPreferenceConstants.FORMATTER_MAX_LINE_LENGTH, 3, 0, errorMessages);
 		labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.10"); //$NON-NLS-1$
 		addCheckBox(wrappingGroup, labelText, AntEditorPreferenceConstants.FORMATTER_WRAP_LONG, 1);
 		labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.5"); //$NON-NLS-1$
 		addCheckBox(wrappingGroup, labelText, AntEditorPreferenceConstants.FORMATTER_ALIGN, 1);

 		Group whiteSpaceGroup= createGroup(numColumns, result, AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.11")); //$NON-NLS-1$
 		labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.12"); //$NON-NLS-1$
 		addCheckBox(whiteSpaceGroup, labelText, AntEditorPreferenceConstants.FORMATTER_DELETE_BLANK_LINES, 1);

 		Group commentsGroup= createGroup(numColumns, result, AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.13")); //$NON-NLS-1$
 		labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.14"); //$NON-NLS-1$
 		addCheckBox(commentsGroup, labelText, AntEditorPreferenceConstants.FORMATTER_COMMENTS, 1);

 		initializeFields();

 		applyDialogFont(result);

 		return result;
 	}

 	private Control addTextField(Composite composite, String labelText, String key, int textLimit, int indentation, String[] errorMessages) {
 		Font font= composite.getFont();

 		Label label= new Label(composite, SWT.NONE);
 		label.setText(labelText);
 		label.setFont(font);
 		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		gd.horizontalIndent= indentation;
 		label.setLayoutData(gd);

 		Text textControl= new Text(composite, SWT.BORDER | SWT.SINGLE);
 		textControl.setFont(font);
 		gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		gd.widthHint= convertWidthInCharsToPixels(textLimit + 1);
 		textControl.setLayoutData(gd);
 		textControl.setTextLimit(textLimit);
 		fTextFields.put(textControl, key);
 		if (errorMessages != null) {
 			fNumberFields.put(textControl, errorMessages);
 			textControl.addModifyListener(fNumberFieldListener);
 		} else {
 			textControl.addModifyListener(fTextFieldListener);
 		}

 		return textControl;
 	}


 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
 	 */
 	public void init(IWorkbench workbench) {
 	}

 	/**
 	 * Convenience method to create a GridData.
 	 */
 	private static GridData createGridData(int numColumns, int style, int widthHint) {
 		final GridData gd= new GridData(style);
 		gd.horizontalSpan= numColumns;
 		gd.widthHint= widthHint;
 		return gd;
 	}

 	/**
 	 * Convenience method to create a group
 	 */
 	private Group createGroup(int numColumns, Composite parent, String text ) {
 		final Group group= new Group(parent, SWT.NONE);
 		group.setLayoutData(createGridData(numColumns, GridData.FILL_HORIZONTAL, 0));

 		final GridLayout layout= new GridLayout(numColumns, false);
 		layout.verticalSpacing=  convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
 		layout.horizontalSpacing= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
 		layout.marginHeight= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
 		layout.marginWidth= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);

 		group.setLayout(layout);//createGridLayout(numColumns, true));
 		group.setText(text);
 		return group;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.preference.PreferencePage#performDefaults()
 	 */
 	protected void performDefaults() {

 		fOverlayStore.loadDefaults();

 		initializeFields();

 		super.performDefaults();
 	}

 	private void initializeFields() {

 		Iterator iter= fCheckBoxes.keySet().iterator();
 		while (iter.hasNext()) {
 			Button b= (Button) iter.next();
 			String key= (String) fCheckBoxes.get(b);
 			b.setSelection(fOverlayStore.getBoolean(key));
 		}

 		iter= fTextFields.keySet().iterator();
 		while (iter.hasNext()) {
 			Text t= (Text) iter.next();
 			String key= (String) fTextFields.get(t);
 			t.setText(fOverlayStore.getString(key));
 		}
 	}

 	private void numberFieldChanged(Text textControl) {
 		String number= textControl.getText();
 		IStatus status= validatePositiveNumber(number, (String[])fNumberFields.get(textControl));
 		if (!status.matches(IStatus.ERROR)) {
 			fOverlayStore.setValue((String) fTextFields.get(textControl), number);
 		}
 		updateStatus(status);
 	}

 	private IStatus validatePositiveNumber(String number, String[] errorMessages) {
 		StatusInfo status= new StatusInfo();
 		if (number.length() == 0) {
 			status.setError(errorMessages[0]);
 		} else {
 			try {
 				int value= Integer.parseInt(number);
 				if (value < 0)
 					status.setError(MessageFormat.format(errorMessages[1], new String[]{number})); //$NON-NLS-1$
 			} catch (NumberFormatException e) {
 				status.setError(MessageFormat.format(errorMessages[1], new String[]{number})); //$NON-NLS-1$
 			}
 		}
 		return status;
 	}

 	private void updateStatus(IStatus status) {
 		if (!status.matches(IStatus.ERROR)) {
 			Set keys= fNumberFields.keySet();
 			for (Iterator iter = keys.iterator(); iter.hasNext();) {
 				Text text = (Text) iter.next();
 				IStatus s= validatePositiveNumber(text.getText(), (String[])fNumberFields.get(text));
 				status= s.getSeverity() > status.getSeverity() ? s : status;
 			}
 		}
 		setValid(!status.matches(IStatus.ERROR));
 		applyToStatusLine(this, status);
 	}

 	/*
 	 * Applies the status to the status line of a dialog page.
 	 */
 	private void applyToStatusLine(DialogPage page, IStatus status) {
 		String message= status.getMessage();
 		switch (status.getSeverity()) {
 			case IStatus.OK:
 				page.setMessage(message, IMessageProvider.NONE);
 				page.setErrorMessage(null);
 				break;
 			case IStatus.WARNING:
 				page.setMessage(message, IMessageProvider.WARNING);
 				page.setErrorMessage(null);
 				break;
 			case IStatus.INFO:
 				page.setMessage(message, IMessageProvider.INFORMATION);
 				page.setErrorMessage(null);
 				break;
 			default:
 				if (message.length() == 0) {
 					message= null;
 				}
 				page.setMessage(null);
 				page.setErrorMessage(message);
 				break;
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.preference.IPreferencePage#performOk()
 	 */
 	public boolean performOk() {
 		fOverlayStore.propagate();
 		AntUIPlugin.getDefault().savePluginPreferences();
 		return true;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2004 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Common Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/cpl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/

	package org.eclipse.ant.internal.ui.preferences;

	import java.text.MessageFormat;
	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Map;
	import java.util.Set;

	import org.eclipse.ant.internal.ui.model.AntUIPlugin;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.jface.dialogs.DialogPage;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IMessageProvider;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	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;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPreferencePage;

	/*
	* The page to configure the code formatter options.
	*/
	public class AntCodeFormatterPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

	private OverlayPreferenceStore fOverlayStore;

	private Map fCheckBoxes= new HashMap();
	private SelectionListener fCheckBoxListener= new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {
	}
	public void widgetSelected(SelectionEvent e) {
	Button button= (Button) e.widget;
	fOverlayStore.setValue((String) fCheckBoxes.get(button), button.getSelection());
	}
	};

	private Map fTextFields= new HashMap();
	private ModifyListener fTextFieldListener= new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	Text text= (Text) e.widget;
	fOverlayStore.setValue((String) fTextFields.get(text), text.getText());
	}
	};

	private Map fNumberFields= new HashMap();
	private ModifyListener fNumberFieldListener= new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	numberFieldChanged((Text) e.widget);
	}
	};

	public AntCodeFormatterPreferencePage() {
	setPreferenceStore(AntUIPlugin.getDefault().getPreferenceStore());
	fOverlayStore= createOverlayStore();
	}

	private OverlayPreferenceStore createOverlayStore() {
	List overlayKeys= new ArrayList();
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.FORMATTER_WRAP_LONG));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.FORMATTER_ALIGN));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.FORMATTER_COMMENTS));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.FORMATTER_DELETE_BLANK_LINES));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.INT, AntEditorPreferenceConstants.FORMATTER_MAX_LINE_LENGTH));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.FORMATTER_TAB_CHAR));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.INT, AntEditorPreferenceConstants.FORMATTER_TAB_SIZE));

	OverlayPreferenceStore.OverlayKey[] keys= new OverlayPreferenceStore.OverlayKey[overlayKeys.size()];
	overlayKeys.toArray(keys);
	return new OverlayPreferenceStore(getPreferenceStore(), keys);
	}

	private Button addCheckBox(Composite parent, String labelText, String key, int indentation) {
	Button checkBox= new Button(parent, SWT.CHECK);
	checkBox.setText(labelText);
	checkBox.setFont(parent.getFont());

	GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	gd.horizontalIndent= indentation;
	gd.horizontalSpan= 2;
	checkBox.setLayoutData(gd);
	checkBox.addSelectionListener(fCheckBoxListener);

	fCheckBoxes.put(checkBox, key);

	return checkBox;
	}

	/*
	* @see PreferencePage#createControl(Composite)
	*/
	public void createControl(Composite parent) {
	super.createControl(parent);
	//TODO set help
	//WorkbenchHelp.setHelp(getControl(), "ANT_FORMATTER_PREFERENCE_PAGE"); //$NON-NLS-1$
	}

	protected Control createContents(Composite parent) {
	initializeDialogUnits(parent);
	fOverlayStore.load();
	fOverlayStore.start();
	int numColumns= 2;
	Composite result= new Composite(parent, SWT.NONE);
	GridLayout layout= new GridLayout();
	layout.marginHeight= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
	layout.marginWidth= 0;
	layout.verticalSpacing= convertVerticalDLUsToPixels(10);
	layout.horizontalSpacing= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
	result.setLayout(layout);

	Group indentationGroup= createGroup(numColumns, result, AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.0")); //$NON-NLS-1$

	String labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.1"); //$NON-NLS-1$
	String[] errorMessages= new String[]{AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.2"), AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.3")}; //$NON-NLS-1$ //$NON-NLS-2$
	addTextField(indentationGroup, labelText, AntEditorPreferenceConstants.FORMATTER_TAB_SIZE, 3, 0, errorMessages);

	labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.4"); //$NON-NLS-1$
	addCheckBox(indentationGroup, labelText, AntEditorPreferenceConstants.FORMATTER_TAB_CHAR, 1);

	Group wrappingGroup= createGroup(numColumns, result, AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.6")); //$NON-NLS-1$
	labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.7"); //$NON-NLS-1$
	errorMessages= new String[]{AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.8"), AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.9")}; //$NON-NLS-1$ //$NON-NLS-2$
	addTextField(wrappingGroup, labelText, AntEditorPreferenceConstants.FORMATTER_MAX_LINE_LENGTH, 3, 0, errorMessages);
	labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.10"); //$NON-NLS-1$
	addCheckBox(wrappingGroup, labelText, AntEditorPreferenceConstants.FORMATTER_WRAP_LONG, 1);
	labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.5"); //$NON-NLS-1$
	addCheckBox(wrappingGroup, labelText, AntEditorPreferenceConstants.FORMATTER_ALIGN, 1);

	Group whiteSpaceGroup= createGroup(numColumns, result, AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.11")); //$NON-NLS-1$
	labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.12"); //$NON-NLS-1$
	addCheckBox(whiteSpaceGroup, labelText, AntEditorPreferenceConstants.FORMATTER_DELETE_BLANK_LINES, 1);

	Group commentsGroup= createGroup(numColumns, result, AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.13")); //$NON-NLS-1$
	labelText= AntPreferencesMessages.getString("AntCodeFormatterPreferencePage.14"); //$NON-NLS-1$
	addCheckBox(commentsGroup, labelText, AntEditorPreferenceConstants.FORMATTER_COMMENTS, 1);

	initializeFields();

	applyDialogFont(result);

	return result;
	}

	private Control addTextField(Composite composite, String labelText, String key, int textLimit, int indentation, String[] errorMessages) {
	Font font= composite.getFont();

	Label label= new Label(composite, SWT.NONE);
	label.setText(labelText);
	label.setFont(font);
	GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	gd.horizontalIndent= indentation;
	label.setLayoutData(gd);

	Text textControl= new Text(composite, SWT.BORDER \| SWT.SINGLE);
	textControl.setFont(font);
	gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	gd.widthHint= convertWidthInCharsToPixels(textLimit + 1);
	textControl.setLayoutData(gd);
	textControl.setTextLimit(textLimit);
	fTextFields.put(textControl, key);
	if (errorMessages != null) {
	fNumberFields.put(textControl, errorMessages);
	textControl.addModifyListener(fNumberFieldListener);
	} else {
	textControl.addModifyListener(fTextFieldListener);
	}

	return textControl;
	}


	/* (non-Javadoc)
	* @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
	*/
	public void init(IWorkbench workbench) {
	}

	/**
	* Convenience method to create a GridData.
	*/
	private static GridData createGridData(int numColumns, int style, int widthHint) {
	final GridData gd= new GridData(style);
	gd.horizontalSpan= numColumns;
	gd.widthHint= widthHint;
	return gd;
	}

	/**
	* Convenience method to create a group
	*/
	private Group createGroup(int numColumns, Composite parent, String text ) {
	final Group group= new Group(parent, SWT.NONE);
	group.setLayoutData(createGridData(numColumns, GridData.FILL_HORIZONTAL, 0));

	final GridLayout layout= new GridLayout(numColumns, false);
	layout.verticalSpacing= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
	layout.horizontalSpacing= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
	layout.marginHeight= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
	layout.marginWidth= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);

	group.setLayout(layout);//createGridLayout(numColumns, true));
	group.setText(text);
	return group;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.preference.PreferencePage#performDefaults()
	*/
	protected void performDefaults() {

	fOverlayStore.loadDefaults();

	initializeFields();

	super.performDefaults();
	}

	private void initializeFields() {

	Iterator iter= fCheckBoxes.keySet().iterator();
	while (iter.hasNext()) {
	Button b= (Button) iter.next();
	String key= (String) fCheckBoxes.get(b);
	b.setSelection(fOverlayStore.getBoolean(key));
	}

	iter= fTextFields.keySet().iterator();
	while (iter.hasNext()) {
	Text t= (Text) iter.next();
	String key= (String) fTextFields.get(t);
	t.setText(fOverlayStore.getString(key));
	}
	}

	private void numberFieldChanged(Text textControl) {
	String number= textControl.getText();
	IStatus status= validatePositiveNumber(number, (String[])fNumberFields.get(textControl));
	if (!status.matches(IStatus.ERROR)) {
	fOverlayStore.setValue((String) fTextFields.get(textControl), number);
	}
	updateStatus(status);
	}

	private IStatus validatePositiveNumber(String number, String[] errorMessages) {
	StatusInfo status= new StatusInfo();
	if (number.length() == 0) {
	status.setError(errorMessages[0]);
	} else {
	try {
	int value= Integer.parseInt(number);
	if (value < 0)
	status.setError(MessageFormat.format(errorMessages[1], new String[]{number})); //$NON-NLS-1$
	} catch (NumberFormatException e) {
	status.setError(MessageFormat.format(errorMessages[1], new String[]{number})); //$NON-NLS-1$
	}
	}
	return status;
	}

	private void updateStatus(IStatus status) {
	if (!status.matches(IStatus.ERROR)) {
	Set keys= fNumberFields.keySet();
	for (Iterator iter = keys.iterator(); iter.hasNext();) {
	Text text = (Text) iter.next();
	IStatus s= validatePositiveNumber(text.getText(), (String[])fNumberFields.get(text));
	status= s.getSeverity() > status.getSeverity() ? s : status;
	}
	}
	setValid(!status.matches(IStatus.ERROR));
	applyToStatusLine(this, status);
	}

	/*
	* Applies the status to the status line of a dialog page.
	*/
	private void applyToStatusLine(DialogPage page, IStatus status) {
	String message= status.getMessage();
	switch (status.getSeverity()) {
	case IStatus.OK:
	page.setMessage(message, IMessageProvider.NONE);
	page.setErrorMessage(null);
	break;
	case IStatus.WARNING:
	page.setMessage(message, IMessageProvider.WARNING);
	page.setErrorMessage(null);
	break;
	case IStatus.INFO:
	page.setMessage(message, IMessageProvider.INFORMATION);
	page.setErrorMessage(null);
	break;
	default:
	if (message.length() == 0) {
	message= null;
	}
	page.setMessage(null);
	page.setErrorMessage(message);
	break;
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.preference.IPreferencePage#performOk()
	*/
	public boolean performOk() {
	fOverlayStore.propagate();
	AntUIPlugin.getDefault().savePluginPreferences();
	return true;
	}
	}