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

 package org.eclipse.ui.internal.dialogs;

 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved.
  */
 import org.eclipse.core.resources.*;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.preference.*;
 import org.eclipse.jface.util.*;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.*;
 import org.eclipse.ui.*;
 import org.eclipse.ui.help.WorkbenchHelp;
 import org.eclipse.ui.internal.*;

 public class WorkbenchPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
 	private IWorkbench workbench;
 	private Button autoBuildButton;
 	private Button autoSaveAllButton;
 	private Button refreshButton;
 	private Button showTasks;
 	private IntegerFieldEditor saveInterval;

 	private Button doubleClickButton;
 	private Button singleClickButton;
 	private Button selectOnHoverButton;
 	private Button openAfterDelayButton;
 	private boolean openOnSingleClick;
 	private boolean selectOnHover;
 	private boolean openAfterDelay;

 	/**
 	 * Creates composite control and sets the default layout data.
 	 *
 	 * @param parent  the parent of the new composite
 	 * @param numColumns  the number of columns for the new composite
 	 * @return the newly-created coposite
 	 */
 	private Composite createComposite(Composite parent, int numColumns) {
 		Composite composite = new Composite(parent, SWT.NULL);

 		// GridLayout
 		GridLayout layout = new GridLayout();
 		layout.numColumns = numColumns;
 		composite.setLayout(layout);

 		// GridData
 		GridData data = new GridData();
 		data.verticalAlignment = GridData.FILL;
 		data.horizontalAlignment = GridData.FILL;
 		composite.setLayoutData(data);
 		return composite;
 	}
 	/**
 	 *	Create this page's visual contents
 	 *
 	 *	@return org.eclipse.swt.widgets.Control
 	 *	@param parent org.eclipse.swt.widgets.Composite
 	 */
 	protected Control createContents(Composite parent) {

 		Font font = parent.getFont();

 		WorkbenchHelp.setHelp(parent, IHelpContextIds.WORKBENCH_PREFERENCE_PAGE);

 		Composite composite = new Composite(parent, SWT.NULL);
 		GridLayout layout = new GridLayout();
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		composite.setLayout(layout);
 		composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL));
 		composite.setFont(font);

 		autoBuildButton = new Button(composite, SWT.CHECK);
 		autoBuildButton.setText(WorkbenchMessages.getString("WorkbenchPreference.autobuild")); //$NON-NLS-1$
 		autoBuildButton.setFont(font);

 		autoSaveAllButton = new Button(composite, SWT.CHECK);
 		autoSaveAllButton.setText(WorkbenchMessages.getString("WorkbenchPreference.savePriorToBuilding")); //$NON-NLS-1$
 		autoSaveAllButton.setFont(font);

 		refreshButton = new Button(composite, SWT.CHECK);
 		refreshButton.setText(WorkbenchMessages.getString("WorkbenchPreference.refreshButton")); //$NON-NLS-1$
 		refreshButton.setFont(font);

 		showTasks = new Button(composite, SWT.CHECK);
 		showTasks.setText(WorkbenchMessages.getString("WorkbenchPreference.showTasks")); //$NON-NLS-1$
 		showTasks.setFont(font);

 		createSpace(composite);
 		createSaveIntervalGroup(composite);

 		createSpace(composite);
 		createSingleClickGroup(composite);

 		// set initial values
 		IPreferenceStore store = WorkbenchPlugin.getDefault().getPreferenceStore();
 		autoBuildButton.setSelection(ResourcesPlugin.getWorkspace().isAutoBuilding());
 		autoSaveAllButton.setSelection(store.getBoolean(IPreferenceConstants.SAVE_ALL_BEFORE_BUILD));
 		refreshButton.setSelection(store.getBoolean(IPreferenceConstants.REFRESH_WORKSPACE_ON_STARTUP));
 		showTasks.setSelection(store.getBoolean(IPreferenceConstants.SHOW_TASKS_ON_BUILD));

 		return composite;
 	}

 	private void createSingleClickGroup(Composite composite) {

 		Font font = composite.getFont();

 		Group buttonComposite = new Group(composite, SWT.LEFT);
 		GridLayout layout = new GridLayout();
 		buttonComposite.setLayout(layout);
 		GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL);
 		buttonComposite.setLayoutData(data);
 		buttonComposite.setText(WorkbenchMessages.getString("WorkbenchPreference.openMode")); //$NON-NLS-1$
 		buttonComposite.setFont(font);


 		String label = WorkbenchMessages.getString("WorkbenchPreference.doubleClick"); //$NON-NLS-1$
 		doubleClickButton = createRadioButton(buttonComposite,label);
 		doubleClickButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				selectClickMode(singleClickButton.getSelection());
 			}
 		});
 		doubleClickButton.setSelection(!openOnSingleClick);

 		label = WorkbenchMessages.getString("WorkbenchPreference.singleClick"); //$NON-NLS-1$
 		singleClickButton = createRadioButton(buttonComposite,label);
 		singleClickButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				selectClickMode(singleClickButton.getSelection());
 			}
 		});
 		singleClickButton.setSelection(openOnSingleClick);

 		label = WorkbenchMessages.getString("WorkbenchPreference.singleClick_SelectOnHover"); //$NON-NLS-1$
 		selectOnHoverButton = new Button(buttonComposite, SWT.CHECK | SWT.LEFT);
 		selectOnHoverButton.setText(label);
 		selectOnHoverButton.setFont(font);
 		selectOnHoverButton.setEnabled(openOnSingleClick);
 		selectOnHoverButton.setSelection(selectOnHover);
 		selectOnHoverButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				selectOnHover = selectOnHoverButton.getSelection();
 			}
 		});
 		data = new GridData();
 		data.horizontalIndent = 20;
 		selectOnHoverButton.setLayoutData(data);


 		label = WorkbenchMessages.getString("WorkbenchPreference.singleClick_OpenAfterDelay"); //$NON-NLS-1$
 		openAfterDelayButton = new Button(buttonComposite, SWT.CHECK | SWT.LEFT);
 		openAfterDelayButton.setText(label);
 		openAfterDelayButton.setEnabled(openOnSingleClick);
 		openAfterDelayButton.setSelection(openAfterDelay);
 		openAfterDelayButton.setFont(font);
 		openAfterDelayButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				openAfterDelay = openAfterDelayButton.getSelection();
 			}
 		});
 		data = new GridData();
 		data.horizontalIndent = 20;
 		openAfterDelayButton.setLayoutData(data);

 		createNoteComposite(
 			font,
 			buttonComposite,
 			WorkbenchMessages.getString("Preference.note"),//$NON-NLS-1$
 			WorkbenchMessages.getString("WorkbenchPreference.noEffectOnAllViews")); //$NON-NLS-1$
 	}

 	private void selectClickMode(boolean singleClick) {
 		openOnSingleClick = singleClick;
 		selectOnHoverButton.setEnabled(openOnSingleClick);
 		openAfterDelayButton.setEnabled(openOnSingleClick);
 	}
 	/**
 	 * Create a composite that contains entry fields specifying save interval preference.
 	 */
 	private void createSaveIntervalGroup(Composite composite) {
 		Composite groupComposite = new Composite(composite, SWT.LEFT);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		groupComposite.setLayout(layout);
 		GridData gd = new GridData();
 		gd.horizontalAlignment = GridData.FILL;
 		gd.grabExcessHorizontalSpace = true;
 		groupComposite.setLayoutData(gd);
 		groupComposite.setFont(composite.getFont());

 		saveInterval = new IntegerFieldEditor(IPreferenceConstants.SAVE_INTERVAL, WorkbenchMessages.getString("WorkbenchPreference.saveInterval"), groupComposite); //$NON-NLS-1$

 		saveInterval.setPreferenceStore(WorkbenchPlugin.getDefault().getPreferenceStore());
 		saveInterval.setPreferencePage(this);
 		saveInterval.setTextLimit(Integer.toString(IPreferenceConstants.MAX_SAVE_INTERVAL).length());
 		saveInterval.setErrorMessage(WorkbenchMessages.format("WorkbenchPreference.saveIntervalError", new Object[] { new Integer(IPreferenceConstants.MAX_SAVE_INTERVAL)})); //$NON-NLS-1$
 		saveInterval.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
 		saveInterval.setValidRange(1, IPreferenceConstants.MAX_SAVE_INTERVAL);

 		IWorkspaceDescription description = ResourcesPlugin.getWorkspace().getDescription();
 		long interval = description.getSnapshotInterval() / 60000;
 		saveInterval.setStringValue(Long.toString(interval));

 		saveInterval.setPropertyChangeListener(new IPropertyChangeListener() {
 			public void propertyChange(PropertyChangeEvent event) {
 				if (event.getProperty().equals(FieldEditor.IS_VALID))
 					setValid(saveInterval.isValid());
 			}
 		});

 	}
 	/**
 	 * Utility method that creates a radio button instance
 	 * and sets the default layout data.
 	 *
 	 * @param parent  the parent for the new button
 	 * @param label  the label for the new button
 	 * @return the newly-created button
 	 */
 	protected static Button createRadioButton(Composite parent, String label) {
 		Button button = new Button(parent, SWT.RADIO | SWT.LEFT);
 		button.setText(label);
 		button.setFont(parent.getFont());
 		return button;
 	}
 	/**
 	 * Utility method that creates a combo box
 	 *
 	 * @param parent  the parent for the new label
 	 * @return the new widget
 	 */
 	protected static Combo createCombo(Composite parent) {
 		Combo combo = new Combo(parent, SWT.READ_ONLY);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
 		combo.setLayoutData(data);
 		combo.setFont(parent.getFont());
 		return combo;
 	}
 	/**
 	 * Utility method that creates a label instance
 	 * and sets the default layout data.
 	 *
 	 * @param parent  the parent for the new label
 	 * @param text  the text for the new label
 	 * @return the new label
 	 */
 	protected static Label createLabel(Composite parent, String text) {
 		Label label = new Label(parent, SWT.LEFT);
 		label.setText(text);
 		label.setFont(parent.getFont());
 		GridData data = new GridData();
 		data.horizontalSpan = 1;
 		data.horizontalAlignment = GridData.FILL;
 		label.setLayoutData(data);
 		return label;
 	}
 	/**
 	 * Creates a tab of one horizontal spans.
 	 *
 	 * @param parent  the parent in which the tab should be created
 	 */
 	protected static void createSpace(Composite parent) {
 		Label vfiller = new Label(parent, SWT.LEFT);
 		GridData gridData = new GridData();
 		gridData = new GridData();
 		gridData.horizontalAlignment = GridData.BEGINNING;
 		gridData.grabExcessHorizontalSpace = false;
 		gridData.verticalAlignment = GridData.CENTER;
 		gridData.grabExcessVerticalSpace = false;
 		vfiller.setLayoutData(gridData);
 	}
 	/**
 	 * Returns preference store that belongs to the our plugin.
 	 *
 	 * @return the preference store for this plugin
 	 */
 	protected IPreferenceStore doGetPreferenceStore() {
 		return WorkbenchPlugin.getDefault().getPreferenceStore();
 	}
 	/**
 	 *	@see IWorkbenchPreferencePage
 	 */
 	public void init(IWorkbench aWorkbench) {
 		workbench = aWorkbench;
 		IPreferenceStore store = WorkbenchPlugin.getDefault().getPreferenceStore();
 		openOnSingleClick = store.getBoolean(IPreferenceConstants.OPEN_ON_SINGLE_CLICK); //$NON-NLS-1$
 		selectOnHover = store.getBoolean(IPreferenceConstants.SELECT_ON_HOVER); //$NON-NLS-1$
 		openAfterDelay = store.getBoolean(IPreferenceConstants.OPEN_AFTER_DELAY); //$NON-NLS-1$
 	}
 	/**
 	 * The default button has been pressed.
 	 */
 	protected void performDefaults() {
 		IPreferenceStore store = WorkbenchPlugin.getDefault().getPreferenceStore();
 		autoBuildButton.setSelection(store.getDefaultBoolean(IPreferenceConstants.AUTO_BUILD));
 		autoSaveAllButton.setSelection(store.getDefaultBoolean(IPreferenceConstants.SAVE_ALL_BEFORE_BUILD));
 		refreshButton.setSelection(store.getDefaultBoolean(IPreferenceConstants.REFRESH_WORKSPACE_ON_STARTUP));
 		showTasks.setSelection(store.getBoolean(IPreferenceConstants.SHOW_TASKS_ON_BUILD));
 		saveInterval.loadDefault();

 		openOnSingleClick = store.getDefaultBoolean(IPreferenceConstants.OPEN_ON_SINGLE_CLICK); //$NON-NLS-1$
 		selectOnHover = store.getDefaultBoolean(IPreferenceConstants.SELECT_ON_HOVER); //$NON-NLS-1$
 		openAfterDelay = store.getDefaultBoolean(IPreferenceConstants.OPEN_AFTER_DELAY); //$NON-NLS-1$
 		singleClickButton.setSelection(openOnSingleClick);
 		doubleClickButton.setSelection(!openOnSingleClick);
 		selectOnHoverButton.setSelection(selectOnHover);
 		openAfterDelayButton.setSelection(openAfterDelay);
 		selectOnHoverButton.setEnabled(openOnSingleClick);
 		openAfterDelayButton.setEnabled(openOnSingleClick);

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

 		// inform the workbench of whether it should do autobuilds or not
 		IWorkspaceDescription description = ResourcesPlugin.getWorkspace().getDescription();
 		boolean coreAutoBuildSetting = description.isAutoBuilding();
 		boolean preferenceStoreCurrentSetting = store.getBoolean(IPreferenceConstants.AUTO_BUILD);
 		boolean newAutoBuildSetting = autoBuildButton.getSelection();

 		//As older versions of Eclipse did not use the preference store for this
 		//setting it is possible that the setting in Core will be false
 		//and the preference store will have the default value of true.
 		//Do a second setValue if required here to synch them up
 		if(preferenceStoreCurrentSetting && !coreAutoBuildSetting)
 			store.setValue(IPreferenceConstants.AUTO_BUILD, coreAutoBuildSetting);

 		// store the auto build in the preference store so that we can enable import and export
 		store.setValue(IPreferenceConstants.AUTO_BUILD, newAutoBuildSetting);

 		// store the save all prior to build setting
 		store.setValue(IPreferenceConstants.SAVE_ALL_BEFORE_BUILD, autoSaveAllButton.getSelection());

 		// store the link navigator to editor setting
 		store.setValue(IPreferenceConstants.REFRESH_WORKSPACE_ON_STARTUP, refreshButton.getSelection());

 		//store the preference for bringing task view to front on build
 		store.setValue(IPreferenceConstants.SHOW_TASKS_ON_BUILD, showTasks.getSelection());

 		long oldSaveInterval = description.getSnapshotInterval() / 60000;
 		long newSaveInterval = new Long(saveInterval.getStringValue()).longValue();
 		if(oldSaveInterval != newSaveInterval) {
 			try {
 				description.setSnapshotInterval(newSaveInterval * 60000);
 				ResourcesPlugin.getWorkspace().setDescription(description);
 				store.firePropertyChangeEvent(IPreferenceConstants.SAVE_INTERVAL, new Integer((int)oldSaveInterval), new Integer((int)newSaveInterval));
 			} catch (CoreException e) {
 				WorkbenchPlugin.log("Error changing save interval preference", e.getStatus());
 			}
 		}

 		store.setValue(IPreferenceConstants.OPEN_ON_SINGLE_CLICK,openOnSingleClick); //$NON-NLS-1$
 		store.setValue(IPreferenceConstants.SELECT_ON_HOVER,selectOnHover); //$NON-NLS-1$
 		store.setValue(IPreferenceConstants.OPEN_AFTER_DELAY,openAfterDelay); //$NON-NLS-1$
 		int singleClickMethod = openOnSingleClick ? OpenStrategy.SINGLE_CLICK : OpenStrategy.DOUBLE_CLICK;
 		if(openOnSingleClick) {
 			if(selectOnHover)
 				singleClickMethod |= OpenStrategy.SELECT_ON_HOVER;
 			if(openAfterDelay)
 				singleClickMethod |= OpenStrategy.ARROW_KEYS_OPEN;
 		}
 		OpenStrategy.setOpenMethod(singleClickMethod);

 		WorkbenchPlugin.getDefault().savePluginPreferences();
 		return true;
 	}
 }
	package org.eclipse.ui.internal.dialogs;

	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved.
	*/
	import org.eclipse.core.resources.*;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.preference.*;
	import org.eclipse.jface.util.*;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.*;
	import org.eclipse.ui.*;
	import org.eclipse.ui.help.WorkbenchHelp;
	import org.eclipse.ui.internal.*;

	public class WorkbenchPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
	private IWorkbench workbench;
	private Button autoBuildButton;
	private Button autoSaveAllButton;
	private Button refreshButton;
	private Button showTasks;
	private IntegerFieldEditor saveInterval;

	private Button doubleClickButton;
	private Button singleClickButton;
	private Button selectOnHoverButton;
	private Button openAfterDelayButton;
	private boolean openOnSingleClick;
	private boolean selectOnHover;
	private boolean openAfterDelay;

	/**
	* Creates composite control and sets the default layout data.
	*
	* @param parent the parent of the new composite
	* @param numColumns the number of columns for the new composite
	* @return the newly-created coposite
	*/
	private Composite createComposite(Composite parent, int numColumns) {
	Composite composite = new Composite(parent, SWT.NULL);

	// GridLayout
	GridLayout layout = new GridLayout();
	layout.numColumns = numColumns;
	composite.setLayout(layout);

	// GridData
	GridData data = new GridData();
	data.verticalAlignment = GridData.FILL;
	data.horizontalAlignment = GridData.FILL;
	composite.setLayoutData(data);
	return composite;
	}
	/**
	* Create this page's visual contents
	*
	* @return org.eclipse.swt.widgets.Control
	* @param parent org.eclipse.swt.widgets.Composite
	*/
	protected Control createContents(Composite parent) {

	Font font = parent.getFont();

	WorkbenchHelp.setHelp(parent, IHelpContextIds.WORKBENCH_PREFERENCE_PAGE);

	Composite composite = new Composite(parent, SWT.NULL);
	GridLayout layout = new GridLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	composite.setLayout(layout);
	composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL \| GridData.HORIZONTAL_ALIGN_FILL));
	composite.setFont(font);

	autoBuildButton = new Button(composite, SWT.CHECK);
	autoBuildButton.setText(WorkbenchMessages.getString("WorkbenchPreference.autobuild")); //$NON-NLS-1$
	autoBuildButton.setFont(font);

	autoSaveAllButton = new Button(composite, SWT.CHECK);
	autoSaveAllButton.setText(WorkbenchMessages.getString("WorkbenchPreference.savePriorToBuilding")); //$NON-NLS-1$
	autoSaveAllButton.setFont(font);

	refreshButton = new Button(composite, SWT.CHECK);
	refreshButton.setText(WorkbenchMessages.getString("WorkbenchPreference.refreshButton")); //$NON-NLS-1$
	refreshButton.setFont(font);

	showTasks = new Button(composite, SWT.CHECK);
	showTasks.setText(WorkbenchMessages.getString("WorkbenchPreference.showTasks")); //$NON-NLS-1$
	showTasks.setFont(font);

	createSpace(composite);
	createSaveIntervalGroup(composite);

	createSpace(composite);
	createSingleClickGroup(composite);

	// set initial values
	IPreferenceStore store = WorkbenchPlugin.getDefault().getPreferenceStore();
	autoBuildButton.setSelection(ResourcesPlugin.getWorkspace().isAutoBuilding());
	autoSaveAllButton.setSelection(store.getBoolean(IPreferenceConstants.SAVE_ALL_BEFORE_BUILD));
	refreshButton.setSelection(store.getBoolean(IPreferenceConstants.REFRESH_WORKSPACE_ON_STARTUP));
	showTasks.setSelection(store.getBoolean(IPreferenceConstants.SHOW_TASKS_ON_BUILD));

	return composite;
	}

	private void createSingleClickGroup(Composite composite) {

	Font font = composite.getFont();

	Group buttonComposite = new Group(composite, SWT.LEFT);
	GridLayout layout = new GridLayout();
	buttonComposite.setLayout(layout);
	GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.GRAB_HORIZONTAL);
	buttonComposite.setLayoutData(data);
	buttonComposite.setText(WorkbenchMessages.getString("WorkbenchPreference.openMode")); //$NON-NLS-1$
	buttonComposite.setFont(font);


	String label = WorkbenchMessages.getString("WorkbenchPreference.doubleClick"); //$NON-NLS-1$
	doubleClickButton = createRadioButton(buttonComposite,label);
	doubleClickButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	selectClickMode(singleClickButton.getSelection());
	}
	});
	doubleClickButton.setSelection(!openOnSingleClick);

	label = WorkbenchMessages.getString("WorkbenchPreference.singleClick"); //$NON-NLS-1$
	singleClickButton = createRadioButton(buttonComposite,label);
	singleClickButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	selectClickMode(singleClickButton.getSelection());
	}
	});
	singleClickButton.setSelection(openOnSingleClick);

	label = WorkbenchMessages.getString("WorkbenchPreference.singleClick_SelectOnHover"); //$NON-NLS-1$
	selectOnHoverButton = new Button(buttonComposite, SWT.CHECK \| SWT.LEFT);
	selectOnHoverButton.setText(label);
	selectOnHoverButton.setFont(font);
	selectOnHoverButton.setEnabled(openOnSingleClick);
	selectOnHoverButton.setSelection(selectOnHover);
	selectOnHoverButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	selectOnHover = selectOnHoverButton.getSelection();
	}
	});
	data = new GridData();
	data.horizontalIndent = 20;
	selectOnHoverButton.setLayoutData(data);


	label = WorkbenchMessages.getString("WorkbenchPreference.singleClick_OpenAfterDelay"); //$NON-NLS-1$
	openAfterDelayButton = new Button(buttonComposite, SWT.CHECK \| SWT.LEFT);
	openAfterDelayButton.setText(label);
	openAfterDelayButton.setEnabled(openOnSingleClick);
	openAfterDelayButton.setSelection(openAfterDelay);
	openAfterDelayButton.setFont(font);
	openAfterDelayButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	openAfterDelay = openAfterDelayButton.getSelection();
	}
	});
	data = new GridData();
	data.horizontalIndent = 20;
	openAfterDelayButton.setLayoutData(data);

	createNoteComposite(
	font,
	buttonComposite,
	WorkbenchMessages.getString("Preference.note"),//$NON-NLS-1$
	WorkbenchMessages.getString("WorkbenchPreference.noEffectOnAllViews")); //$NON-NLS-1$
	}

	private void selectClickMode(boolean singleClick) {
	openOnSingleClick = singleClick;
	selectOnHoverButton.setEnabled(openOnSingleClick);
	openAfterDelayButton.setEnabled(openOnSingleClick);
	}
	/**
	* Create a composite that contains entry fields specifying save interval preference.
	*/
	private void createSaveIntervalGroup(Composite composite) {
	Composite groupComposite = new Composite(composite, SWT.LEFT);
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	groupComposite.setLayout(layout);
	GridData gd = new GridData();
	gd.horizontalAlignment = GridData.FILL;
	gd.grabExcessHorizontalSpace = true;
	groupComposite.setLayoutData(gd);
	groupComposite.setFont(composite.getFont());

	saveInterval = new IntegerFieldEditor(IPreferenceConstants.SAVE_INTERVAL, WorkbenchMessages.getString("WorkbenchPreference.saveInterval"), groupComposite); //$NON-NLS-1$

	saveInterval.setPreferenceStore(WorkbenchPlugin.getDefault().getPreferenceStore());
	saveInterval.setPreferencePage(this);
	saveInterval.setTextLimit(Integer.toString(IPreferenceConstants.MAX_SAVE_INTERVAL).length());
	saveInterval.setErrorMessage(WorkbenchMessages.format("WorkbenchPreference.saveIntervalError", new Object[] { new Integer(IPreferenceConstants.MAX_SAVE_INTERVAL)})); //$NON-NLS-1$
	saveInterval.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
	saveInterval.setValidRange(1, IPreferenceConstants.MAX_SAVE_INTERVAL);

	IWorkspaceDescription description = ResourcesPlugin.getWorkspace().getDescription();
	long interval = description.getSnapshotInterval() / 60000;
	saveInterval.setStringValue(Long.toString(interval));

	saveInterval.setPropertyChangeListener(new IPropertyChangeListener() {
	public void propertyChange(PropertyChangeEvent event) {
	if (event.getProperty().equals(FieldEditor.IS_VALID))
	setValid(saveInterval.isValid());
	}
	});

	}
	/**
	* Utility method that creates a radio button instance
	* and sets the default layout data.
	*
	* @param parent the parent for the new button
	* @param label the label for the new button
	* @return the newly-created button
	*/
	protected static Button createRadioButton(Composite parent, String label) {
	Button button = new Button(parent, SWT.RADIO \| SWT.LEFT);
	button.setText(label);
	button.setFont(parent.getFont());
	return button;
	}
	/**
	* Utility method that creates a combo box
	*
	* @param parent the parent for the new label
	* @return the new widget
	*/
	protected static Combo createCombo(Composite parent) {
	Combo combo = new Combo(parent, SWT.READ_ONLY);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
	combo.setLayoutData(data);
	combo.setFont(parent.getFont());
	return combo;
	}
	/**
	* Utility method that creates a label instance
	* and sets the default layout data.
	*
	* @param parent the parent for the new label
	* @param text the text for the new label
	* @return the new label
	*/
	protected static Label createLabel(Composite parent, String text) {
	Label label = new Label(parent, SWT.LEFT);
	label.setText(text);
	label.setFont(parent.getFont());
	GridData data = new GridData();
	data.horizontalSpan = 1;
	data.horizontalAlignment = GridData.FILL;
	label.setLayoutData(data);
	return label;
	}
	/**
	* Creates a tab of one horizontal spans.
	*
	* @param parent the parent in which the tab should be created
	*/
	protected static void createSpace(Composite parent) {
	Label vfiller = new Label(parent, SWT.LEFT);
	GridData gridData = new GridData();
	gridData = new GridData();
	gridData.horizontalAlignment = GridData.BEGINNING;
	gridData.grabExcessHorizontalSpace = false;
	gridData.verticalAlignment = GridData.CENTER;
	gridData.grabExcessVerticalSpace = false;
	vfiller.setLayoutData(gridData);
	}
	/**
	* Returns preference store that belongs to the our plugin.
	*
	* @return the preference store for this plugin
	*/
	protected IPreferenceStore doGetPreferenceStore() {
	return WorkbenchPlugin.getDefault().getPreferenceStore();
	}
	/**
	* @see IWorkbenchPreferencePage
	*/
	public void init(IWorkbench aWorkbench) {
	workbench = aWorkbench;
	IPreferenceStore store = WorkbenchPlugin.getDefault().getPreferenceStore();
	openOnSingleClick = store.getBoolean(IPreferenceConstants.OPEN_ON_SINGLE_CLICK); //$NON-NLS-1$
	selectOnHover = store.getBoolean(IPreferenceConstants.SELECT_ON_HOVER); //$NON-NLS-1$
	openAfterDelay = store.getBoolean(IPreferenceConstants.OPEN_AFTER_DELAY); //$NON-NLS-1$
	}
	/**
	* The default button has been pressed.
	*/
	protected void performDefaults() {
	IPreferenceStore store = WorkbenchPlugin.getDefault().getPreferenceStore();
	autoBuildButton.setSelection(store.getDefaultBoolean(IPreferenceConstants.AUTO_BUILD));
	autoSaveAllButton.setSelection(store.getDefaultBoolean(IPreferenceConstants.SAVE_ALL_BEFORE_BUILD));
	refreshButton.setSelection(store.getDefaultBoolean(IPreferenceConstants.REFRESH_WORKSPACE_ON_STARTUP));
	showTasks.setSelection(store.getBoolean(IPreferenceConstants.SHOW_TASKS_ON_BUILD));
	saveInterval.loadDefault();

	openOnSingleClick = store.getDefaultBoolean(IPreferenceConstants.OPEN_ON_SINGLE_CLICK); //$NON-NLS-1$
	selectOnHover = store.getDefaultBoolean(IPreferenceConstants.SELECT_ON_HOVER); //$NON-NLS-1$
	openAfterDelay = store.getDefaultBoolean(IPreferenceConstants.OPEN_AFTER_DELAY); //$NON-NLS-1$
	singleClickButton.setSelection(openOnSingleClick);
	doubleClickButton.setSelection(!openOnSingleClick);
	selectOnHoverButton.setSelection(selectOnHover);
	openAfterDelayButton.setSelection(openAfterDelay);
	selectOnHoverButton.setEnabled(openOnSingleClick);
	openAfterDelayButton.setEnabled(openOnSingleClick);

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

	// inform the workbench of whether it should do autobuilds or not
	IWorkspaceDescription description = ResourcesPlugin.getWorkspace().getDescription();
	boolean coreAutoBuildSetting = description.isAutoBuilding();
	boolean preferenceStoreCurrentSetting = store.getBoolean(IPreferenceConstants.AUTO_BUILD);
	boolean newAutoBuildSetting = autoBuildButton.getSelection();

	//As older versions of Eclipse did not use the preference store for this
	//setting it is possible that the setting in Core will be false
	//and the preference store will have the default value of true.
	//Do a second setValue if required here to synch them up
	if(preferenceStoreCurrentSetting && !coreAutoBuildSetting)
	store.setValue(IPreferenceConstants.AUTO_BUILD, coreAutoBuildSetting);

	// store the auto build in the preference store so that we can enable import and export
	store.setValue(IPreferenceConstants.AUTO_BUILD, newAutoBuildSetting);

	// store the save all prior to build setting
	store.setValue(IPreferenceConstants.SAVE_ALL_BEFORE_BUILD, autoSaveAllButton.getSelection());

	// store the link navigator to editor setting
	store.setValue(IPreferenceConstants.REFRESH_WORKSPACE_ON_STARTUP, refreshButton.getSelection());

	//store the preference for bringing task view to front on build
	store.setValue(IPreferenceConstants.SHOW_TASKS_ON_BUILD, showTasks.getSelection());

	long oldSaveInterval = description.getSnapshotInterval() / 60000;
	long newSaveInterval = new Long(saveInterval.getStringValue()).longValue();
	if(oldSaveInterval != newSaveInterval) {
	try {
	description.setSnapshotInterval(newSaveInterval * 60000);
	ResourcesPlugin.getWorkspace().setDescription(description);
	store.firePropertyChangeEvent(IPreferenceConstants.SAVE_INTERVAL, new Integer((int)oldSaveInterval), new Integer((int)newSaveInterval));
	} catch (CoreException e) {
	WorkbenchPlugin.log("Error changing save interval preference", e.getStatus());
	}
	}

	store.setValue(IPreferenceConstants.OPEN_ON_SINGLE_CLICK,openOnSingleClick); //$NON-NLS-1$
	store.setValue(IPreferenceConstants.SELECT_ON_HOVER,selectOnHover); //$NON-NLS-1$
	store.setValue(IPreferenceConstants.OPEN_AFTER_DELAY,openAfterDelay); //$NON-NLS-1$
	int singleClickMethod = openOnSingleClick ? OpenStrategy.SINGLE_CLICK : OpenStrategy.DOUBLE_CLICK;
	if(openOnSingleClick) {
	if(selectOnHover)
	singleClickMethod \|= OpenStrategy.SELECT_ON_HOVER;
	if(openAfterDelay)
	singleClickMethod \|= OpenStrategy.ARROW_KEYS_OPEN;
	}
	OpenStrategy.setOpenMethod(singleClickMethod);

	WorkbenchPlugin.getDefault().savePluginPreferences();
	return true;
	}
	}