org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/JavaDebugPreferencePage.java - jdt/eclipse.jdt.debug - Git at Google

 package org.eclipse.jdt.internal.debug.ui;

 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved.
  */

 import org.eclipse.debug.ui.IDebugUIConstants;
 import org.eclipse.debug.ui.IDebugView;
 import org.eclipse.jdt.debug.core.JDIDebugModel;
 import org.eclipse.jdt.launching.JavaRuntime;
 import org.eclipse.jface.preference.FieldEditor;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.IntegerFieldEditor;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.jface.preference.StringFieldEditor;
 import org.eclipse.jface.util.IPropertyChangeListener;
 import org.eclipse.jface.util.PropertyChangeEvent;
 import org.eclipse.jface.viewers.StructuredViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.BusyIndicator;
 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.ui.IViewPart;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchPreferencePage;
 import org.eclipse.ui.IWorkbenchWindow;
 import org.eclipse.ui.help.WorkbenchHelp;

 /**
  * Preference page for debug preferences that apply specifically to
  * Java Debugging.
  */
 public class JavaDebugPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

 	// Suspend preference widgets
 	private Button fSuspendButton;
 	private Button fSuspendOnCompilationErrors;
 	// Alert preference widgets
 	private Button fAlertHCRButton;
 	private Button fAlertHCRNotSupportedButton;
 	private Button fAlertObsoleteButton;
 	// Timeout preference widgets
 	private IntegerFieldEditor fTimeoutText;
 	private IntegerFieldEditor fConnectionTimeoutText;

 	private PropertyChangeListener fPropertyChangeListener;

 	protected class PropertyChangeListener implements IPropertyChangeListener {
 		private boolean fHasStateChanged= false;

 		public void propertyChange(PropertyChangeEvent event) {
 			if (event.getProperty().equals(IJDIPreferencesConstants.PREF_SHOW_HEX_VALUES)) {
 				fHasStateChanged= true;
 			} else if (event.getProperty().equals(IJDIPreferencesConstants.PREF_SHOW_CHAR_VALUES)) {
 				fHasStateChanged= true;
 			} else if (event.getProperty().equals(IJDIPreferencesConstants.PREF_SHOW_UNSIGNED_VALUES)) {
 				fHasStateChanged= true;
 			}
 		}

 		protected boolean hasStateChanged() {
  			return fHasStateChanged;
  		}
 	}


 	public JavaDebugPreferencePage() {
 		super();
 		setPreferenceStore(JDIDebugUIPlugin.getDefault().getPreferenceStore());
 		getPreferenceStore().addPropertyChangeListener(getPropertyChangeListener());
 		setDescription(DebugUIMessages.getString("JavaDebugPreferencePage.description")); //$NON-NLS-1$
 	}

 	/**
 	 * Set the default preferences for this page.
 	 */
 	public static void initDefaults(IPreferenceStore store) {
 		store.setDefault(IJDIPreferencesConstants.PREF_SHOW_HEX_VALUES, false);
 		store.setDefault(IJDIPreferencesConstants.PREF_SHOW_CHAR_VALUES, false);
 		store.setDefault(IJDIPreferencesConstants.PREF_SHOW_UNSIGNED_VALUES, false);
 		store.setDefault(IJDIPreferencesConstants.PREF_SUSPEND_ON_COMPILATION_ERRORS, true);
 		store.setDefault(IJDIPreferencesConstants.PREF_SUSPEND_ON_UNCAUGHT_EXCEPTIONS, true);
 		store.setDefault(IJDIPreferencesConstants.PREF_ALERT_HCR_FAILED, true);
 		store.setDefault(IJDIPreferencesConstants.PREF_ALERT_HCR_NOT_SUPPORTED, true);
 		store.setDefault(IJDIPreferencesConstants.PREF_ALERT_OBSOLETE_METHODS, true);

 		store.setDefault(IJDIPreferencesConstants.PREF_SHOW_QUALIFIED_NAMES, true);
 		store.setDefault(IJDIPreferencesConstants.PREF_SHOW_FINAL_FIELDS, false);
 		store.setDefault(IJDIPreferencesConstants.PREF_SHOW_STATIC_FIELDS, false);
 	}
 	/**
 	 * @see PreferencePage#createContents(Composite)
 	 */
 	protected Control createContents(Composite parent) {
 		WorkbenchHelp.setHelp(getControl(), IJavaDebugHelpContextIds.JAVA_DEBUG_PREFERENCE_PAGE);

 		//The main composite
 		Composite composite = new Composite(parent, SWT.NULL);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 1;
 		layout.marginHeight=0;
 		layout.marginWidth=0;
 		composite.setLayout(layout);
 		GridData data = new GridData();
 		data.verticalAlignment = GridData.FILL;
 		data.horizontalAlignment = GridData.FILL;
 		composite.setLayoutData(data);

 		Composite comp= createGroupComposite(composite, 1, DebugUIMessages.getString("JavaDebugPreferencePage.Suspend_Execution_1")); //$NON-NLS-1$
 		fSuspendButton= createCheckButton(comp, DebugUIMessages.getString("JavaDebugPreferencePage.Suspend_&execution_on_uncaught_exceptions_1")); //$NON-NLS-1$
 		fSuspendOnCompilationErrors= createCheckButton(comp, DebugUIMessages.getString("JavaDebugPreferencePage.Suspend_execution_on_co&mpilation_errors_1")); //$NON-NLS-1$

 		createSpacer(composite, 1);

 		comp= createGroupComposite(composite, 1, DebugUIMessages.getString("JavaDebugPreferencePage.Hot_Code_Replace_Error_Reporting_2")); //$NON-NLS-1$
 		fAlertHCRButton= createCheckButton(comp, DebugUIMessages.getString("JavaDebugPreferencePage.Alert_me_when_hot_code_replace_fails_1")); //$NON-NLS-1$
 		fAlertHCRNotSupportedButton= createCheckButton(comp, DebugUIMessages.getString("JavaDebugPreferencePage.Alert_me_when_hot_code_replace_is_not_supported_1")); //$NON-NLS-1$
 		fAlertObsoleteButton= createCheckButton(comp, DebugUIMessages.getString("JavaDebugPreferencePage.Alert_me_when_obsolete_methods_remain_1")); //$NON-NLS-1$

 		createSpacer(composite, 1);

 		comp = createGroupComposite(composite, 1, DebugUIMessages.getString("JavaDebugPreferencePage.Communication_1")); //$NON-NLS-1$
 		//Add in an intermediate composite to allow for spacing
 		Composite spacingComposite = new Composite(comp, SWT.NONE);
 		layout = new GridLayout();
 		spacingComposite.setLayout(layout);
 		data = new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL);
 		data.horizontalSpan = 2;
 		spacingComposite.setLayoutData(data);

 		fTimeoutText = new IntegerFieldEditor(JDIDebugModel.PREF_REQUEST_TIMEOUT, DebugUIMessages.getString("JavaDebugPreferencePage.Debugger_&timeout__2"), spacingComposite); //$NON-NLS-1$
 		fTimeoutText.setPreferenceStore(JDIDebugUIPlugin.getDefault().getPreferenceStore());
 		fTimeoutText.setPreferencePage(this);
 		fTimeoutText.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
 		fTimeoutText.setValidRange(50, Integer.MAX_VALUE);
 		fTimeoutText.setErrorMessage(DebugUIMessages.getString("JavaDebugPreferencePage.Value_must_be_a_valid_integer_greater_than_50_ms_1")); //$NON-NLS-1$
 		fTimeoutText.load();
 		fTimeoutText.setPropertyChangeListener(new IPropertyChangeListener() {
 			public void propertyChange(PropertyChangeEvent event) {
 				if (event.getProperty().equals(FieldEditor.IS_VALID))
 					setValid(fTimeoutText.isValid());
 			}
 		});
 		fConnectionTimeoutText = new IntegerFieldEditor(JavaRuntime.PREF_CONNECT_TIMEOUT, DebugUIMessages.getString("JavaDebugPreferencePage.&Launch_timeout_(ms)__1"), spacingComposite); //$NON-NLS-1$
 		fConnectionTimeoutText.setPreferenceStore(JDIDebugUIPlugin.getDefault().getPreferenceStore());
 		fConnectionTimeoutText.setPreferencePage(this);
 		fConnectionTimeoutText.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
 		fConnectionTimeoutText.load();
 		fConnectionTimeoutText.setPropertyChangeListener(new IPropertyChangeListener() {
 			public void propertyChange(PropertyChangeEvent event) {
 				if (event.getProperty().equals(FieldEditor.IS_VALID))
 					setValid(fConnectionTimeoutText.isValid());
 			}
 		});
 		// cannot set preference store, as it is a core preference

 		setValues();

 		return composite;
 	}

 	/**
 	 * @see IWorkbenchPreferencePage#init(IWorkbench)
 	 */
 	public void init(IWorkbench workbench) {
 	}

 	/**
 	 * @see IPreferencePage#performOk()
 	 * Also, notifies interested listeners
 	 */
 	public boolean performOk() {
 		storeValues();
 		if (getPropertyChangeListener().hasStateChanged()) {
 			refreshViews();
 		}
 		JDIDebugUIPlugin.getDefault().savePluginPreferences();
 		JDIDebugModel.savePreferences();
 		JavaRuntime.savePreferences();
 		return true;
 	}

 	/**
 	 * Refresh the variables and expression views as changes
 	 * have occurred that affects these views.
 	 */
 	private void refreshViews() {
 		BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
 			public void run() {
 				// Refresh interested views
 				IWorkbenchWindow[] windows= JDIDebugUIPlugin.getDefault().getWorkbench().getWorkbenchWindows();
 				IWorkbenchPage page= null;
 				for (int i= 0; i < windows.length; i++) {
 					page= windows[i].getActivePage();
 					if (page != null) {
 						refreshViews(page, IDebugUIConstants.ID_EXPRESSION_VIEW);
 						refreshViews(page, IDebugUIConstants.ID_VARIABLE_VIEW);
 					}
 				}
 			}
 		});
 	}

 	/**
 	 * Refresh all views in the given workbench page with the given view id
 	 */
 	private void refreshViews(IWorkbenchPage page, String viewID) {
 		IViewPart part= page.findView(viewID);
 		if (part != null) {
 			IDebugView adapter= (IDebugView)part.getAdapter(IDebugView.class);
 			if (adapter != null) {
 				Viewer viewer= adapter.getViewer();
 				if (viewer instanceof StructuredViewer) {
 					((StructuredViewer)viewer).refresh();
 				}
 			}
 		}
 	}

 	/**
 	 * Sets the default preferences.
 	 * @see PreferencePage#performDefaults()
 	 */
 	protected void performDefaults() {
 		setDefaultValues();
 		super.performDefaults();
 	}

 	private void setDefaultValues() {
 		IPreferenceStore store = getPreferenceStore();
 		fSuspendButton.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_SUSPEND_ON_UNCAUGHT_EXCEPTIONS));
 		fSuspendOnCompilationErrors.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_SUSPEND_ON_COMPILATION_ERRORS));
 		fAlertHCRButton.setSelection(store.getDefaultBoolean(IJDIPreferencesConstants.PREF_ALERT_HCR_FAILED));
 		fAlertHCRNotSupportedButton.setSelection(store.getDefaultBoolean(IJDIPreferencesConstants.PREF_ALERT_HCR_NOT_SUPPORTED));
 		fAlertObsoleteButton.setSelection(store.getDefaultBoolean(IJDIPreferencesConstants.PREF_ALERT_OBSOLETE_METHODS));
 		fTimeoutText.setStringValue(new Integer(JDIDebugModel.DEF_REQUEST_TIMEOUT).toString());
 		fConnectionTimeoutText.setStringValue(new Integer(JavaRuntime.DEF_CONNECT_TIMEOUT).toString());
 	}

 	/**
 	 * Creates a button with the given label and sets the default
 	 * configuration data.
 	 */
 	private Button createCheckButton(Composite parent, String label) {
 		Button button= new Button(parent, SWT.CHECK | SWT.LEFT);
 		button.setText(label);
 		// FieldEditor GridData
 		GridData data = new GridData();
 		button.setLayoutData(data);

 		return button;
 	}

 	/**
 	 * Creates composite group and sets the default layout data.
 	 *
 	 * @param parent  the parent of the new composite
 	 * @param numColumns  the number of columns for the new composite
 	 * @param labelText  the text label of the new composite
 	 * @return the newly-created composite
 	 */
 	private Composite createGroupComposite(Composite parent, int numColumns, String labelText) {
 		Group comp = new Group(parent, SWT.NONE);
 		//GridLayout
 		GridLayout layout = new GridLayout();
 		layout.numColumns = numColumns;
 		comp.setLayout(layout);
 		//GridData
 		GridData gd= new GridData();
 		gd.verticalAlignment = GridData.FILL;
 		gd.horizontalAlignment = GridData.FILL;
 		comp.setLayoutData(gd);
 		comp.setText(labelText);
 		return comp;
 	}

 	/**
 	 * Set the values of the component widgets based on the
 	 * values in the preference store
 	 */
 	private void setValues() {
 		IPreferenceStore store = getPreferenceStore();

 		fSuspendButton.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_SUSPEND_ON_UNCAUGHT_EXCEPTIONS));
 		fSuspendOnCompilationErrors.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_SUSPEND_ON_COMPILATION_ERRORS));
 		fAlertHCRButton.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_ALERT_HCR_FAILED));
 		fAlertHCRNotSupportedButton.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_ALERT_HCR_NOT_SUPPORTED));
 		fAlertObsoleteButton.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_ALERT_OBSOLETE_METHODS));
 		fTimeoutText.setStringValue(new Integer(JDIDebugModel.getPreferences().getInt(JDIDebugModel.PREF_REQUEST_TIMEOUT)).toString());
 		fConnectionTimeoutText.setStringValue(new Integer(JavaRuntime.getPreferences().getInt(JavaRuntime.PREF_CONNECT_TIMEOUT)).toString());
 	}

 	/**
 	 * Store the preference values based on the state of the
 	 * component widgets
 	 */
 	private void storeValues() {
 		IPreferenceStore store = getPreferenceStore();
 		store.setValue(IJDIPreferencesConstants.PREF_SUSPEND_ON_UNCAUGHT_EXCEPTIONS, fSuspendButton.getSelection());
 		store.setValue(IJDIPreferencesConstants.PREF_SUSPEND_ON_COMPILATION_ERRORS, fSuspendOnCompilationErrors.getSelection());
 		store.setValue(IJDIPreferencesConstants.PREF_ALERT_HCR_FAILED, fAlertHCRButton.getSelection());
 		store.setValue(IJDIPreferencesConstants.PREF_ALERT_HCR_NOT_SUPPORTED, fAlertHCRNotSupportedButton.getSelection());
 		store.setValue(IJDIPreferencesConstants.PREF_ALERT_OBSOLETE_METHODS, fAlertObsoleteButton.getSelection());
 		JDIDebugModel.getPreferences().setValue(JDIDebugModel.PREF_REQUEST_TIMEOUT, fTimeoutText.getIntValue());
 		JavaRuntime.getPreferences().setValue(JavaRuntime.PREF_CONNECT_TIMEOUT, fConnectionTimeoutText.getIntValue());
 	}

 	protected PropertyChangeListener getPropertyChangeListener() {
 		if (fPropertyChangeListener == null) {
 			fPropertyChangeListener= new PropertyChangeListener();
 		}
 		return fPropertyChangeListener;
 	}

 	/**
 	 * @see DialogPage#dispose()
 	 */
 	public void dispose() {
 		super.dispose();
 		getPreferenceStore().removePropertyChangeListener(getPropertyChangeListener());
 	}

 	protected void createSpacer(Composite composite, int columnSpan) {
 		Label label = new Label(composite, SWT.NONE);
 		GridData gd = new GridData();
 		gd.horizontalSpan = columnSpan;
 		label.setLayoutData(gd);
 	}
 }
	package org.eclipse.jdt.internal.debug.ui;

	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved.
	*/

	import org.eclipse.debug.ui.IDebugUIConstants;
	import org.eclipse.debug.ui.IDebugView;
	import org.eclipse.jdt.debug.core.JDIDebugModel;
	import org.eclipse.jdt.launching.JavaRuntime;
	import org.eclipse.jface.preference.FieldEditor;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.preference.IntegerFieldEditor;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.jface.preference.StringFieldEditor;
	import org.eclipse.jface.util.IPropertyChangeListener;
	import org.eclipse.jface.util.PropertyChangeEvent;
	import org.eclipse.jface.viewers.StructuredViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.BusyIndicator;
	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.ui.IViewPart;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPage;
	import org.eclipse.ui.IWorkbenchPreferencePage;
	import org.eclipse.ui.IWorkbenchWindow;
	import org.eclipse.ui.help.WorkbenchHelp;

	/**
	* Preference page for debug preferences that apply specifically to
	* Java Debugging.
	*/
	public class JavaDebugPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

	// Suspend preference widgets
	private Button fSuspendButton;
	private Button fSuspendOnCompilationErrors;
	// Alert preference widgets
	private Button fAlertHCRButton;
	private Button fAlertHCRNotSupportedButton;
	private Button fAlertObsoleteButton;
	// Timeout preference widgets
	private IntegerFieldEditor fTimeoutText;
	private IntegerFieldEditor fConnectionTimeoutText;

	private PropertyChangeListener fPropertyChangeListener;

	protected class PropertyChangeListener implements IPropertyChangeListener {
	private boolean fHasStateChanged= false;

	public void propertyChange(PropertyChangeEvent event) {
	if (event.getProperty().equals(IJDIPreferencesConstants.PREF_SHOW_HEX_VALUES)) {
	fHasStateChanged= true;
	} else if (event.getProperty().equals(IJDIPreferencesConstants.PREF_SHOW_CHAR_VALUES)) {
	fHasStateChanged= true;
	} else if (event.getProperty().equals(IJDIPreferencesConstants.PREF_SHOW_UNSIGNED_VALUES)) {
	fHasStateChanged= true;
	}
	}

	protected boolean hasStateChanged() {
	return fHasStateChanged;
	}
	}



	public JavaDebugPreferencePage() {
	super();
	setPreferenceStore(JDIDebugUIPlugin.getDefault().getPreferenceStore());
	getPreferenceStore().addPropertyChangeListener(getPropertyChangeListener());
	setDescription(DebugUIMessages.getString("JavaDebugPreferencePage.description")); //$NON-NLS-1$
	}

	/**
	* Set the default preferences for this page.
	*/
	public static void initDefaults(IPreferenceStore store) {
	store.setDefault(IJDIPreferencesConstants.PREF_SHOW_HEX_VALUES, false);
	store.setDefault(IJDIPreferencesConstants.PREF_SHOW_CHAR_VALUES, false);
	store.setDefault(IJDIPreferencesConstants.PREF_SHOW_UNSIGNED_VALUES, false);
	store.setDefault(IJDIPreferencesConstants.PREF_SUSPEND_ON_COMPILATION_ERRORS, true);
	store.setDefault(IJDIPreferencesConstants.PREF_SUSPEND_ON_UNCAUGHT_EXCEPTIONS, true);
	store.setDefault(IJDIPreferencesConstants.PREF_ALERT_HCR_FAILED, true);
	store.setDefault(IJDIPreferencesConstants.PREF_ALERT_HCR_NOT_SUPPORTED, true);
	store.setDefault(IJDIPreferencesConstants.PREF_ALERT_OBSOLETE_METHODS, true);

	store.setDefault(IJDIPreferencesConstants.PREF_SHOW_QUALIFIED_NAMES, true);
	store.setDefault(IJDIPreferencesConstants.PREF_SHOW_FINAL_FIELDS, false);
	store.setDefault(IJDIPreferencesConstants.PREF_SHOW_STATIC_FIELDS, false);
	}
	/**
	* @see PreferencePage#createContents(Composite)
	*/
	protected Control createContents(Composite parent) {
	WorkbenchHelp.setHelp(getControl(), IJavaDebugHelpContextIds.JAVA_DEBUG_PREFERENCE_PAGE);

	//The main composite
	Composite composite = new Composite(parent, SWT.NULL);
	GridLayout layout = new GridLayout();
	layout.numColumns = 1;
	layout.marginHeight=0;
	layout.marginWidth=0;
	composite.setLayout(layout);
	GridData data = new GridData();
	data.verticalAlignment = GridData.FILL;
	data.horizontalAlignment = GridData.FILL;
	composite.setLayoutData(data);

	Composite comp= createGroupComposite(composite, 1, DebugUIMessages.getString("JavaDebugPreferencePage.Suspend_Execution_1")); //$NON-NLS-1$
	fSuspendButton= createCheckButton(comp, DebugUIMessages.getString("JavaDebugPreferencePage.Suspend_&execution_on_uncaught_exceptions_1")); //$NON-NLS-1$
	fSuspendOnCompilationErrors= createCheckButton(comp, DebugUIMessages.getString("JavaDebugPreferencePage.Suspend_execution_on_co&mpilation_errors_1")); //$NON-NLS-1$

	createSpacer(composite, 1);

	comp= createGroupComposite(composite, 1, DebugUIMessages.getString("JavaDebugPreferencePage.Hot_Code_Replace_Error_Reporting_2")); //$NON-NLS-1$
	fAlertHCRButton= createCheckButton(comp, DebugUIMessages.getString("JavaDebugPreferencePage.Alert_me_when_hot_code_replace_fails_1")); //$NON-NLS-1$
	fAlertHCRNotSupportedButton= createCheckButton(comp, DebugUIMessages.getString("JavaDebugPreferencePage.Alert_me_when_hot_code_replace_is_not_supported_1")); //$NON-NLS-1$
	fAlertObsoleteButton= createCheckButton(comp, DebugUIMessages.getString("JavaDebugPreferencePage.Alert_me_when_obsolete_methods_remain_1")); //$NON-NLS-1$

	createSpacer(composite, 1);

	comp = createGroupComposite(composite, 1, DebugUIMessages.getString("JavaDebugPreferencePage.Communication_1")); //$NON-NLS-1$
	//Add in an intermediate composite to allow for spacing
	Composite spacingComposite = new Composite(comp, SWT.NONE);
	layout = new GridLayout();
	spacingComposite.setLayout(layout);
	data = new GridData(GridData.GRAB_HORIZONTAL \| GridData.FILL_HORIZONTAL);
	data.horizontalSpan = 2;
	spacingComposite.setLayoutData(data);

	fTimeoutText = new IntegerFieldEditor(JDIDebugModel.PREF_REQUEST_TIMEOUT, DebugUIMessages.getString("JavaDebugPreferencePage.Debugger_&timeout__2"), spacingComposite); //$NON-NLS-1$
	fTimeoutText.setPreferenceStore(JDIDebugUIPlugin.getDefault().getPreferenceStore());
	fTimeoutText.setPreferencePage(this);
	fTimeoutText.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
	fTimeoutText.setValidRange(50, Integer.MAX_VALUE);
	fTimeoutText.setErrorMessage(DebugUIMessages.getString("JavaDebugPreferencePage.Value_must_be_a_valid_integer_greater_than_50_ms_1")); //$NON-NLS-1$
	fTimeoutText.load();
	fTimeoutText.setPropertyChangeListener(new IPropertyChangeListener() {
	public void propertyChange(PropertyChangeEvent event) {
	if (event.getProperty().equals(FieldEditor.IS_VALID))
	setValid(fTimeoutText.isValid());
	}
	});
	fConnectionTimeoutText = new IntegerFieldEditor(JavaRuntime.PREF_CONNECT_TIMEOUT, DebugUIMessages.getString("JavaDebugPreferencePage.&Launch_timeout_(ms)__1"), spacingComposite); //$NON-NLS-1$
	fConnectionTimeoutText.setPreferenceStore(JDIDebugUIPlugin.getDefault().getPreferenceStore());
	fConnectionTimeoutText.setPreferencePage(this);
	fConnectionTimeoutText.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
	fConnectionTimeoutText.load();
	fConnectionTimeoutText.setPropertyChangeListener(new IPropertyChangeListener() {
	public void propertyChange(PropertyChangeEvent event) {
	if (event.getProperty().equals(FieldEditor.IS_VALID))
	setValid(fConnectionTimeoutText.isValid());
	}
	});
	// cannot set preference store, as it is a core preference

	setValues();

	return composite;
	}

	/**
	* @see IWorkbenchPreferencePage#init(IWorkbench)
	*/
	public void init(IWorkbench workbench) {
	}

	/**
	* @see IPreferencePage#performOk()
	* Also, notifies interested listeners
	*/
	public boolean performOk() {
	storeValues();
	if (getPropertyChangeListener().hasStateChanged()) {
	refreshViews();
	}
	JDIDebugUIPlugin.getDefault().savePluginPreferences();
	JDIDebugModel.savePreferences();
	JavaRuntime.savePreferences();
	return true;
	}

	/**
	* Refresh the variables and expression views as changes
	* have occurred that affects these views.
	*/
	private void refreshViews() {
	BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
	public void run() {
	// Refresh interested views
	IWorkbenchWindow[] windows= JDIDebugUIPlugin.getDefault().getWorkbench().getWorkbenchWindows();
	IWorkbenchPage page= null;
	for (int i= 0; i < windows.length; i++) {
	page= windows[i].getActivePage();
	if (page != null) {
	refreshViews(page, IDebugUIConstants.ID_EXPRESSION_VIEW);
	refreshViews(page, IDebugUIConstants.ID_VARIABLE_VIEW);
	}
	}
	}
	});
	}

	/**
	* Refresh all views in the given workbench page with the given view id
	*/
	private void refreshViews(IWorkbenchPage page, String viewID) {
	IViewPart part= page.findView(viewID);
	if (part != null) {
	IDebugView adapter= (IDebugView)part.getAdapter(IDebugView.class);
	if (adapter != null) {
	Viewer viewer= adapter.getViewer();
	if (viewer instanceof StructuredViewer) {
	((StructuredViewer)viewer).refresh();
	}
	}
	}
	}

	/**
	* Sets the default preferences.
	* @see PreferencePage#performDefaults()
	*/
	protected void performDefaults() {
	setDefaultValues();
	super.performDefaults();
	}

	private void setDefaultValues() {
	IPreferenceStore store = getPreferenceStore();
	fSuspendButton.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_SUSPEND_ON_UNCAUGHT_EXCEPTIONS));
	fSuspendOnCompilationErrors.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_SUSPEND_ON_COMPILATION_ERRORS));
	fAlertHCRButton.setSelection(store.getDefaultBoolean(IJDIPreferencesConstants.PREF_ALERT_HCR_FAILED));
	fAlertHCRNotSupportedButton.setSelection(store.getDefaultBoolean(IJDIPreferencesConstants.PREF_ALERT_HCR_NOT_SUPPORTED));
	fAlertObsoleteButton.setSelection(store.getDefaultBoolean(IJDIPreferencesConstants.PREF_ALERT_OBSOLETE_METHODS));
	fTimeoutText.setStringValue(new Integer(JDIDebugModel.DEF_REQUEST_TIMEOUT).toString());
	fConnectionTimeoutText.setStringValue(new Integer(JavaRuntime.DEF_CONNECT_TIMEOUT).toString());
	}

	/**
	* Creates a button with the given label and sets the default
	* configuration data.
	*/
	private Button createCheckButton(Composite parent, String label) {
	Button button= new Button(parent, SWT.CHECK \| SWT.LEFT);
	button.setText(label);
	// FieldEditor GridData
	GridData data = new GridData();
	button.setLayoutData(data);

	return button;
	}

	/**
	* Creates composite group and sets the default layout data.
	*
	* @param parent the parent of the new composite
	* @param numColumns the number of columns for the new composite
	* @param labelText the text label of the new composite
	* @return the newly-created composite
	*/
	private Composite createGroupComposite(Composite parent, int numColumns, String labelText) {
	Group comp = new Group(parent, SWT.NONE);
	//GridLayout
	GridLayout layout = new GridLayout();
	layout.numColumns = numColumns;
	comp.setLayout(layout);
	//GridData
	GridData gd= new GridData();
	gd.verticalAlignment = GridData.FILL;
	gd.horizontalAlignment = GridData.FILL;
	comp.setLayoutData(gd);
	comp.setText(labelText);
	return comp;
	}

	/**
	* Set the values of the component widgets based on the
	* values in the preference store
	*/
	private void setValues() {
	IPreferenceStore store = getPreferenceStore();

	fSuspendButton.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_SUSPEND_ON_UNCAUGHT_EXCEPTIONS));
	fSuspendOnCompilationErrors.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_SUSPEND_ON_COMPILATION_ERRORS));
	fAlertHCRButton.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_ALERT_HCR_FAILED));
	fAlertHCRNotSupportedButton.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_ALERT_HCR_NOT_SUPPORTED));
	fAlertObsoleteButton.setSelection(store.getBoolean(IJDIPreferencesConstants.PREF_ALERT_OBSOLETE_METHODS));
	fTimeoutText.setStringValue(new Integer(JDIDebugModel.getPreferences().getInt(JDIDebugModel.PREF_REQUEST_TIMEOUT)).toString());
	fConnectionTimeoutText.setStringValue(new Integer(JavaRuntime.getPreferences().getInt(JavaRuntime.PREF_CONNECT_TIMEOUT)).toString());
	}

	/**
	* Store the preference values based on the state of the
	* component widgets
	*/
	private void storeValues() {
	IPreferenceStore store = getPreferenceStore();
	store.setValue(IJDIPreferencesConstants.PREF_SUSPEND_ON_UNCAUGHT_EXCEPTIONS, fSuspendButton.getSelection());
	store.setValue(IJDIPreferencesConstants.PREF_SUSPEND_ON_COMPILATION_ERRORS, fSuspendOnCompilationErrors.getSelection());
	store.setValue(IJDIPreferencesConstants.PREF_ALERT_HCR_FAILED, fAlertHCRButton.getSelection());
	store.setValue(IJDIPreferencesConstants.PREF_ALERT_HCR_NOT_SUPPORTED, fAlertHCRNotSupportedButton.getSelection());
	store.setValue(IJDIPreferencesConstants.PREF_ALERT_OBSOLETE_METHODS, fAlertObsoleteButton.getSelection());
	JDIDebugModel.getPreferences().setValue(JDIDebugModel.PREF_REQUEST_TIMEOUT, fTimeoutText.getIntValue());
	JavaRuntime.getPreferences().setValue(JavaRuntime.PREF_CONNECT_TIMEOUT, fConnectionTimeoutText.getIntValue());
	}

	protected PropertyChangeListener getPropertyChangeListener() {
	if (fPropertyChangeListener == null) {
	fPropertyChangeListener= new PropertyChangeListener();
	}
	return fPropertyChangeListener;
	}

	/**
	* @see DialogPage#dispose()
	*/
	public void dispose() {
	super.dispose();
	getPreferenceStore().removePropertyChangeListener(getPropertyChangeListener());
	}

	protected void createSpacer(Composite composite, int columnSpan) {
	Label label = new Label(composite, SWT.NONE);
	GridData gd = new GridData();
	gd.horizontalSpan = columnSpan;
	label.setLayoutData(gd);
	}
	}