bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/dialogs/ViewsPreferencePage.java - platform/eclipse.platform.ui - Git at Google

 /**********************************************************************
 Copyright (c) 2000, 2003 IBM Corp. 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 implementation
 **********************************************************************/

 package org.eclipse.ui.internal.dialogs;

 import org.eclipse.jface.preference.BooleanFieldEditor;
 import org.eclipse.jface.preference.ColorFieldEditor;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.JFacePreferences;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.accessibility.AccessibleAdapter;
 import org.eclipse.swt.accessibility.AccessibleEvent;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.layout.FormAttachment;
 import org.eclipse.swt.layout.FormData;
 import org.eclipse.swt.layout.FormLayout;
 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.ui.IWorkbenchPreferencePage;
 import org.eclipse.ui.help.WorkbenchHelp;
 import org.eclipse.ui.internal.IHelpContextIds;
 import org.eclipse.ui.internal.IPreferenceConstants;
 import org.eclipse.ui.internal.WorkbenchMessages;
 import org.eclipse.ui.internal.WorkbenchPlugin;

 /**
  * The ViewsPreferencePage is the page used to set preferences for the look of the
  * views in the workbench.
  */
 public class ViewsPreferencePage
 	extends PreferencePage
 	implements IWorkbenchPreferencePage {

 	private Button editorTopButton;
 	private Button editorBottomButton;
 	private Button viewTopButton;
 	private Button viewBottomButton;

 	private BooleanFieldEditor colorIconsEditor;
 	private ColorFieldEditor errorColorEditor;
 	private ColorFieldEditor hyperlinkColorEditor;
 	private ColorFieldEditor activeHyperlinkColorEditor;
 	/*
 	 * No longer supported - removed when confirmed!
 	 * private Button openFloatButton;
 	 */
 	private int editorAlignment;
 	private int viewAlignment;

 	private static final String COLOUR_ICONS_TITLE = WorkbenchMessages.getString("ViewsPreference.colorIcons"); //$NON-NLS-1$
 	private static final String EDITORS_TITLE = WorkbenchMessages.getString("ViewsPreference.editors"); //$NON-NLS-1$
 	private static final String EDITORS_TOP_TITLE = WorkbenchMessages.getString("ViewsPreference.editors.top"); //$NON-NLS-1$
 	private static final String EDITORS_BOTTOM_TITLE = WorkbenchMessages.getString("ViewsPreference.editors.bottom"); //$NON-NLS-1$
 	private static final String VIEWS_TITLE = WorkbenchMessages.getString("ViewsPreference.views"); //$NON-NLS-1$
 	private static final String VIEWS_TOP_TITLE = WorkbenchMessages.getString("ViewsPreference.views.top"); //$NON-NLS-1$
 	private static final String VIEWS_BOTTOM_TITLE = WorkbenchMessages.getString("ViewsPreference.views.bottom"); //$NON-NLS-1$
 	/*
 	 * No longer supported - remove when confirmed!
 	 * private static final String OVM_FLOAT = WorkbenchMessages.getString("OpenViewMode.float"); //$NON-NLS-1$
 	 */
 	/**
 	 * The label used for the note text.
 	 */
 	private static final String NOTE_LABEL = WorkbenchMessages.getString("Preference.note"); //$NON-NLS-1$
 	private static final String APPLY_MESSAGE = WorkbenchMessages.getString("ViewsPreference.applyMessage"); //$NON-NLS-1$

 	/**
 	 * Create a composite that for creating the tab toggle buttons.
 	 * @param composite Composite
 	 * @param title String
 	 */
 	private Group createButtonGroup(Composite composite, String title) {

 		Group buttonComposite = new Group(composite, SWT.CENTER);
 		buttonComposite.setText(title);
 		buttonComposite.setFont(composite.getFont());
 		FormLayout layout = new FormLayout();
 		layout.marginWidth = 2;
 		layout.marginHeight = 2;
 		buttonComposite.setLayout(layout);
 		GridData data =
 			new GridData(
 				GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL);
 		buttonComposite.setLayoutData(data);

 		return buttonComposite;

 	}
 	/**
 	 * Creates and returns the SWT control for the customized body
 	 * of this preference page under the given parent composite.
 	 * <p>
 	 * This framework method must be implemented by concrete
 	 * subclasses.
 	 * </p>
 	 *
 	 * @param parent the parent composite
 	 * @return the new control
 	 */
 	protected Control createContents(Composite parent) {

 		Font font = parent.getFont();

 		WorkbenchHelp.setHelp(parent, IHelpContextIds.VIEWS_PREFERENCE_PAGE);

 		IPreferenceStore store =
 			WorkbenchPlugin.getDefault().getPreferenceStore();
 		editorAlignment =
 			store.getInt(IPreferenceConstants.EDITOR_TAB_POSITION);
 		viewAlignment = store.getInt(IPreferenceConstants.VIEW_TAB_POSITION);

 		Composite composite = new Composite(parent, SWT.NONE);
 		composite.setLayoutData(new GridData(GridData.FILL_BOTH));
 		composite.setFont(font);

 		GridLayout layout = new GridLayout();
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		layout.verticalSpacing = 10;
 		composite.setLayout(layout);

 		Composite colorIconsComposite = new Composite(composite, SWT.NONE);
 		colorIconsComposite.setFont(font);
 		colorIconsEditor =
 			new BooleanFieldEditor(
 				IPreferenceConstants.COLOR_ICONS,
 				COLOUR_ICONS_TITLE,
 				colorIconsComposite);
 		colorIconsEditor.setPreferencePage(this);
 		colorIconsEditor.setPreferenceStore(doGetPreferenceStore());
 		colorIconsEditor.load();

 		createEditorTabButtonGroup(composite);
 		createViewTabButtonGroup(composite);

 		createNoteComposite(font, composite, NOTE_LABEL, APPLY_MESSAGE);

 		Group colorComposite = new Group(composite, SWT.NONE);
 		colorComposite.setLayout(new GridLayout());
 		colorComposite.setText(WorkbenchMessages.getString("ViewsPreference.ColorsTitle")); //$NON-NLS-1$
 		colorComposite.setFont(font);

 		GridData data =
 			new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL);
 		data.horizontalSpan = 2;
 		colorComposite.setLayoutData(data);

 		//Add in an intermediate composite to allow for spacing
 		Composite spacingComposite = new Composite(colorComposite, SWT.NONE);
 		GridLayout spacingLayout = new GridLayout();
 		spacingLayout.numColumns = 4;
 		spacingComposite.setLayout(spacingLayout);
 		spacingComposite.setFont(font);

 			errorColorEditor = new ColorFieldEditor(JFacePreferences.ERROR_COLOR, WorkbenchMessages.getString("ViewsPreference.ErrorText"), //$NON-NLS-1$,
 	spacingComposite);

 		errorColorEditor.setPreferenceStore(doGetPreferenceStore());
 		errorColorEditor.load();

 			hyperlinkColorEditor = new ColorFieldEditor(JFacePreferences.HYPERLINK_COLOR, WorkbenchMessages.getString("ViewsPreference.HyperlinkText"), //$NON-NLS-1$
 	spacingComposite);

 		hyperlinkColorEditor.setPreferenceStore(doGetPreferenceStore());
 		hyperlinkColorEditor.load();

 			activeHyperlinkColorEditor = new ColorFieldEditor(JFacePreferences.ACTIVE_HYPERLINK_COLOR, WorkbenchMessages.getString("ViewsPreference.ActiveHyperlinkText"), //$NON-NLS-1$
 	spacingComposite);

 		activeHyperlinkColorEditor.setPreferenceStore(doGetPreferenceStore());
 		activeHyperlinkColorEditor.load();

 		return composite;
 	}

 	/**
 	 * Create a composite that contains buttons for selecting tab position for the edit selection.
 	 * @param composite Composite
 	 * @param store IPreferenceStore
 	 */
 	private void createEditorTabButtonGroup(Composite composite) {

 		Font font = composite.getFont();

 		Group buttonComposite = createButtonGroup(composite, EDITORS_TITLE);

 		this.editorTopButton = new Button(buttonComposite, SWT.RADIO);
 		this.editorTopButton.setText(EDITORS_TOP_TITLE);
 		this.editorTopButton.setSelection(this.editorAlignment == SWT.TOP);
 		this.editorTopButton.setFont(font);

 		this.editorTopButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				editorAlignment = SWT.TOP;
 			}
 		});

 		this
 			.editorTopButton
 			.getAccessible()
 			.addAccessibleListener(new AccessibleAdapter() {
 			public void getName(AccessibleEvent e) {
 				e.result = EDITORS_TITLE;
 			}
 		});

 		this.editorBottomButton = new Button(buttonComposite, SWT.RADIO);
 		this.editorBottomButton.setText(EDITORS_BOTTOM_TITLE);
 		this.editorBottomButton.setSelection(
 			this.editorAlignment == SWT.BOTTOM);
 		this.editorBottomButton.setFont(font);

 		this.editorBottomButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				editorAlignment = SWT.BOTTOM;
 			}
 		});

 		attachControls(this.editorTopButton, this.editorBottomButton);

 	}

 	/**
 	 * Create a composite that contains buttons for selecting tab position for the view selection.
 	 * @param composite Composite
 	 * @param store IPreferenceStore
 	 */
 	private void createViewTabButtonGroup(Composite composite) {

 		Font font = composite.getFont();

 		Group buttonComposite = createButtonGroup(composite, VIEWS_TITLE);
 		buttonComposite.setFont(font);

 		this.viewTopButton = new Button(buttonComposite, SWT.RADIO);
 		this.viewTopButton.setText(VIEWS_TOP_TITLE);
 		this.viewTopButton.setSelection(this.viewAlignment == SWT.TOP);
 		this.viewTopButton.setFont(font);

 		this.viewTopButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				viewAlignment = SWT.TOP;
 			}
 		});

 		this.viewBottomButton = new Button(buttonComposite, SWT.RADIO);
 		this.viewBottomButton.setText(VIEWS_BOTTOM_TITLE);
 		this.viewBottomButton.setSelection(this.viewAlignment == SWT.BOTTOM);
 		this.viewBottomButton.setFont(font);

 		this.viewBottomButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				viewAlignment = SWT.BOTTOM;
 			}
 		});

 		attachControls(this.viewTopButton, this.viewBottomButton);

 	}

 	/**
 	 * Set the two supplied controls to be beside each other.
 	 */

 	private void attachControls(Control leftControl, Control rightControl) {

 		FormData leftData = new FormData();
 		leftData.left = new FormAttachment(0, 0);

 		FormData rightData = new FormData();
 		rightData.left = new FormAttachment(leftControl, 5);

 		leftControl.setLayoutData(leftData);
 		rightControl.setLayoutData(rightData);
 	}
 	/**
 	 * Returns preference store that belongs to the our plugin.
 	 *
 	 * @return the preference store for this plugin
 	 */
 	protected IPreferenceStore doGetPreferenceStore() {
 		return WorkbenchPlugin.getDefault().getPreferenceStore();
 	}
 	/**
 	 * Initializes this preference page for the given workbench.
 	 * <p>
 	 * This method is called automatically as the preference page is being created
 	 * and initialized. Clients must not call this method.
 	 * </p>
 	 *
 	 * @param workbench the workbench
 	 */
 	public void init(org.eclipse.ui.IWorkbench workbench) {
 	}
 	/**
 	 * The default button has been pressed.
 	 */
 	protected void performDefaults() {
 		IPreferenceStore store =
 			WorkbenchPlugin.getDefault().getPreferenceStore();

 		int editorTopValue =
 			store.getDefaultInt(IPreferenceConstants.EDITOR_TAB_POSITION);
 		editorTopButton.setSelection(editorTopValue == SWT.TOP);
 		editorBottomButton.setSelection(editorTopValue == SWT.BOTTOM);
 		editorAlignment = editorTopValue;

 		int viewTopValue =
 			store.getDefaultInt(IPreferenceConstants.VIEW_TAB_POSITION);
 		viewTopButton.setSelection(viewTopValue == SWT.TOP);
 		viewBottomButton.setSelection(viewTopValue == SWT.BOTTOM);
 		viewAlignment = viewTopValue;

 		colorIconsEditor.loadDefault();
 		errorColorEditor.loadDefault();
 		hyperlinkColorEditor.loadDefault();
 		activeHyperlinkColorEditor.loadDefault();

 		/*
 		 * No longer supported - remove when confirmed!
 		 * if (openFloatButton != null)
 		 * 	openFloatButton.setSelection(value == IPreferenceConstants.OVM_FLOAT);
 		 */

 		WorkbenchPlugin.getDefault().savePluginPreferences();
 		super.performDefaults();
 	}
 	/**
 	 *	The user has pressed Ok.  Store/apply this page's values appropriately.
 	 */
 	public boolean performOk() {
 		IPreferenceStore store = getPreferenceStore();

 		// store the editor tab value to setting
 		store.setValue(
 			IPreferenceConstants.EDITOR_TAB_POSITION,
 			editorAlignment);

 		// store the view tab value to setting
 		store.setValue(IPreferenceConstants.VIEW_TAB_POSITION, viewAlignment);

 		colorIconsEditor.store();
 		errorColorEditor.store();
 		hyperlinkColorEditor.store();
 		activeHyperlinkColorEditor.store();
 		return true;
 	}
 }
	/**********************************************************************
	Copyright (c) 2000, 2003 IBM Corp. 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 implementation
	**********************************************************************/

	package org.eclipse.ui.internal.dialogs;

	import org.eclipse.jface.preference.BooleanFieldEditor;
	import org.eclipse.jface.preference.ColorFieldEditor;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.preference.JFacePreferences;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.accessibility.AccessibleAdapter;
	import org.eclipse.swt.accessibility.AccessibleEvent;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.layout.FormAttachment;
	import org.eclipse.swt.layout.FormData;
	import org.eclipse.swt.layout.FormLayout;
	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.ui.IWorkbenchPreferencePage;
	import org.eclipse.ui.help.WorkbenchHelp;
	import org.eclipse.ui.internal.IHelpContextIds;
	import org.eclipse.ui.internal.IPreferenceConstants;
	import org.eclipse.ui.internal.WorkbenchMessages;
	import org.eclipse.ui.internal.WorkbenchPlugin;

	/**
	* The ViewsPreferencePage is the page used to set preferences for the look of the
	* views in the workbench.
	*/
	public class ViewsPreferencePage
	extends PreferencePage
	implements IWorkbenchPreferencePage {

	private Button editorTopButton;
	private Button editorBottomButton;
	private Button viewTopButton;
	private Button viewBottomButton;

	private BooleanFieldEditor colorIconsEditor;
	private ColorFieldEditor errorColorEditor;
	private ColorFieldEditor hyperlinkColorEditor;
	private ColorFieldEditor activeHyperlinkColorEditor;
	/*
	* No longer supported - removed when confirmed!
	* private Button openFloatButton;
	*/
	private int editorAlignment;
	private int viewAlignment;

	private static final String COLOUR_ICONS_TITLE = WorkbenchMessages.getString("ViewsPreference.colorIcons"); //$NON-NLS-1$
	private static final String EDITORS_TITLE = WorkbenchMessages.getString("ViewsPreference.editors"); //$NON-NLS-1$
	private static final String EDITORS_TOP_TITLE = WorkbenchMessages.getString("ViewsPreference.editors.top"); //$NON-NLS-1$
	private static final String EDITORS_BOTTOM_TITLE = WorkbenchMessages.getString("ViewsPreference.editors.bottom"); //$NON-NLS-1$
	private static final String VIEWS_TITLE = WorkbenchMessages.getString("ViewsPreference.views"); //$NON-NLS-1$
	private static final String VIEWS_TOP_TITLE = WorkbenchMessages.getString("ViewsPreference.views.top"); //$NON-NLS-1$
	private static final String VIEWS_BOTTOM_TITLE = WorkbenchMessages.getString("ViewsPreference.views.bottom"); //$NON-NLS-1$
	/*
	* No longer supported - remove when confirmed!
	* private static final String OVM_FLOAT = WorkbenchMessages.getString("OpenViewMode.float"); //$NON-NLS-1$
	*/
	/**
	* The label used for the note text.
	*/
	private static final String NOTE_LABEL = WorkbenchMessages.getString("Preference.note"); //$NON-NLS-1$
	private static final String APPLY_MESSAGE = WorkbenchMessages.getString("ViewsPreference.applyMessage"); //$NON-NLS-1$

	/**
	* Create a composite that for creating the tab toggle buttons.
	* @param composite Composite
	* @param title String
	*/
	private Group createButtonGroup(Composite composite, String title) {

	Group buttonComposite = new Group(composite, SWT.CENTER);
	buttonComposite.setText(title);
	buttonComposite.setFont(composite.getFont());
	FormLayout layout = new FormLayout();
	layout.marginWidth = 2;
	layout.marginHeight = 2;
	buttonComposite.setLayout(layout);
	GridData data =
	new GridData(
	GridData.HORIZONTAL_ALIGN_FILL \| GridData.GRAB_HORIZONTAL);
	buttonComposite.setLayoutData(data);

	return buttonComposite;

	}
	/**
	* Creates and returns the SWT control for the customized body
	* of this preference page under the given parent composite.
	* <p>
	* This framework method must be implemented by concrete
	* subclasses.
	* </p>
	*
	* @param parent the parent composite
	* @return the new control
	*/
	protected Control createContents(Composite parent) {

	Font font = parent.getFont();

	WorkbenchHelp.setHelp(parent, IHelpContextIds.VIEWS_PREFERENCE_PAGE);

	IPreferenceStore store =
	WorkbenchPlugin.getDefault().getPreferenceStore();
	editorAlignment =
	store.getInt(IPreferenceConstants.EDITOR_TAB_POSITION);
	viewAlignment = store.getInt(IPreferenceConstants.VIEW_TAB_POSITION);

	Composite composite = new Composite(parent, SWT.NONE);
	composite.setLayoutData(new GridData(GridData.FILL_BOTH));
	composite.setFont(font);

	GridLayout layout = new GridLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	layout.verticalSpacing = 10;
	composite.setLayout(layout);

	Composite colorIconsComposite = new Composite(composite, SWT.NONE);
	colorIconsComposite.setFont(font);
	colorIconsEditor =
	new BooleanFieldEditor(
	IPreferenceConstants.COLOR_ICONS,
	COLOUR_ICONS_TITLE,
	colorIconsComposite);
	colorIconsEditor.setPreferencePage(this);
	colorIconsEditor.setPreferenceStore(doGetPreferenceStore());
	colorIconsEditor.load();

	createEditorTabButtonGroup(composite);
	createViewTabButtonGroup(composite);

	createNoteComposite(font, composite, NOTE_LABEL, APPLY_MESSAGE);

	Group colorComposite = new Group(composite, SWT.NONE);
	colorComposite.setLayout(new GridLayout());
	colorComposite.setText(WorkbenchMessages.getString("ViewsPreference.ColorsTitle")); //$NON-NLS-1$
	colorComposite.setFont(font);

	GridData data =
	new GridData(GridData.GRAB_HORIZONTAL \| GridData.FILL_HORIZONTAL);
	data.horizontalSpan = 2;
	colorComposite.setLayoutData(data);

	//Add in an intermediate composite to allow for spacing
	Composite spacingComposite = new Composite(colorComposite, SWT.NONE);
	GridLayout spacingLayout = new GridLayout();
	spacingLayout.numColumns = 4;
	spacingComposite.setLayout(spacingLayout);
	spacingComposite.setFont(font);

	errorColorEditor = new ColorFieldEditor(JFacePreferences.ERROR_COLOR, WorkbenchMessages.getString("ViewsPreference.ErrorText"), //$NON-NLS-1$,
	spacingComposite);

	errorColorEditor.setPreferenceStore(doGetPreferenceStore());
	errorColorEditor.load();

	hyperlinkColorEditor = new ColorFieldEditor(JFacePreferences.HYPERLINK_COLOR, WorkbenchMessages.getString("ViewsPreference.HyperlinkText"), //$NON-NLS-1$
	spacingComposite);

	hyperlinkColorEditor.setPreferenceStore(doGetPreferenceStore());
	hyperlinkColorEditor.load();

	activeHyperlinkColorEditor = new ColorFieldEditor(JFacePreferences.ACTIVE_HYPERLINK_COLOR, WorkbenchMessages.getString("ViewsPreference.ActiveHyperlinkText"), //$NON-NLS-1$
	spacingComposite);

	activeHyperlinkColorEditor.setPreferenceStore(doGetPreferenceStore());
	activeHyperlinkColorEditor.load();

	return composite;
	}

	/**
	* Create a composite that contains buttons for selecting tab position for the edit selection.
	* @param composite Composite
	* @param store IPreferenceStore
	*/
	private void createEditorTabButtonGroup(Composite composite) {

	Font font = composite.getFont();

	Group buttonComposite = createButtonGroup(composite, EDITORS_TITLE);

	this.editorTopButton = new Button(buttonComposite, SWT.RADIO);
	this.editorTopButton.setText(EDITORS_TOP_TITLE);
	this.editorTopButton.setSelection(this.editorAlignment == SWT.TOP);
	this.editorTopButton.setFont(font);

	this.editorTopButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	editorAlignment = SWT.TOP;
	}
	});

	this
	.editorTopButton
	.getAccessible()
	.addAccessibleListener(new AccessibleAdapter() {
	public void getName(AccessibleEvent e) {
	e.result = EDITORS_TITLE;
	}
	});

	this.editorBottomButton = new Button(buttonComposite, SWT.RADIO);
	this.editorBottomButton.setText(EDITORS_BOTTOM_TITLE);
	this.editorBottomButton.setSelection(
	this.editorAlignment == SWT.BOTTOM);
	this.editorBottomButton.setFont(font);

	this.editorBottomButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	editorAlignment = SWT.BOTTOM;
	}
	});

	attachControls(this.editorTopButton, this.editorBottomButton);

	}

	/**
	* Create a composite that contains buttons for selecting tab position for the view selection.
	* @param composite Composite
	* @param store IPreferenceStore
	*/
	private void createViewTabButtonGroup(Composite composite) {

	Font font = composite.getFont();

	Group buttonComposite = createButtonGroup(composite, VIEWS_TITLE);
	buttonComposite.setFont(font);

	this.viewTopButton = new Button(buttonComposite, SWT.RADIO);
	this.viewTopButton.setText(VIEWS_TOP_TITLE);
	this.viewTopButton.setSelection(this.viewAlignment == SWT.TOP);
	this.viewTopButton.setFont(font);

	this.viewTopButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	viewAlignment = SWT.TOP;
	}
	});

	this.viewBottomButton = new Button(buttonComposite, SWT.RADIO);
	this.viewBottomButton.setText(VIEWS_BOTTOM_TITLE);
	this.viewBottomButton.setSelection(this.viewAlignment == SWT.BOTTOM);
	this.viewBottomButton.setFont(font);

	this.viewBottomButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	viewAlignment = SWT.BOTTOM;
	}
	});

	attachControls(this.viewTopButton, this.viewBottomButton);

	}

	/**
	* Set the two supplied controls to be beside each other.
	*/

	private void attachControls(Control leftControl, Control rightControl) {

	FormData leftData = new FormData();
	leftData.left = new FormAttachment(0, 0);

	FormData rightData = new FormData();
	rightData.left = new FormAttachment(leftControl, 5);

	leftControl.setLayoutData(leftData);
	rightControl.setLayoutData(rightData);
	}
	/**
	* Returns preference store that belongs to the our plugin.
	*
	* @return the preference store for this plugin
	*/
	protected IPreferenceStore doGetPreferenceStore() {
	return WorkbenchPlugin.getDefault().getPreferenceStore();
	}
	/**
	* Initializes this preference page for the given workbench.
	* <p>
	* This method is called automatically as the preference page is being created
	* and initialized. Clients must not call this method.
	* </p>
	*
	* @param workbench the workbench
	*/
	public void init(org.eclipse.ui.IWorkbench workbench) {
	}
	/**
	* The default button has been pressed.
	*/
	protected void performDefaults() {
	IPreferenceStore store =
	WorkbenchPlugin.getDefault().getPreferenceStore();

	int editorTopValue =
	store.getDefaultInt(IPreferenceConstants.EDITOR_TAB_POSITION);
	editorTopButton.setSelection(editorTopValue == SWT.TOP);
	editorBottomButton.setSelection(editorTopValue == SWT.BOTTOM);
	editorAlignment = editorTopValue;

	int viewTopValue =
	store.getDefaultInt(IPreferenceConstants.VIEW_TAB_POSITION);
	viewTopButton.setSelection(viewTopValue == SWT.TOP);
	viewBottomButton.setSelection(viewTopValue == SWT.BOTTOM);
	viewAlignment = viewTopValue;

	colorIconsEditor.loadDefault();
	errorColorEditor.loadDefault();
	hyperlinkColorEditor.loadDefault();
	activeHyperlinkColorEditor.loadDefault();

	/*
	* No longer supported - remove when confirmed!
	* if (openFloatButton != null)
	* openFloatButton.setSelection(value == IPreferenceConstants.OVM_FLOAT);
	*/

	WorkbenchPlugin.getDefault().savePluginPreferences();
	super.performDefaults();
	}
	/**
	* The user has pressed Ok. Store/apply this page's values appropriately.
	*/
	public boolean performOk() {
	IPreferenceStore store = getPreferenceStore();

	// store the editor tab value to setting
	store.setValue(
	IPreferenceConstants.EDITOR_TAB_POSITION,
	editorAlignment);

	// store the view tab value to setting
	store.setValue(IPreferenceConstants.VIEW_TAB_POSITION, viewAlignment);

	colorIconsEditor.store();
	errorColorEditor.store();
	hyperlinkColorEditor.store();
	activeHyperlinkColorEditor.store();
	return true;
	}
	}