plugins/org.eclipse.wst.internet.monitor.ui/monitorui/org/eclipse/wst/internet/monitor/ui/internal/MonitorPreferencePage.java - servertools/webtools.servertools - Git at Google

 /*******************************************************************************
  * Copyright (c) 2003, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - Initial API and implementation
  *******************************************************************************/
 package org.eclipse.wst.internet.monitor.ui.internal;

 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 import org.eclipse.swt.*;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.*;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.jface.viewers.ColumnWeightData;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.TableLayout;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.window.Window;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.wst.internet.monitor.core.internal.provisional.IMonitor;
 import org.eclipse.wst.internet.monitor.core.internal.provisional.IMonitorWorkingCopy;
 import org.eclipse.wst.internet.monitor.core.internal.provisional.MonitorCore;
 /**
  * The preference page that holds monitor properties.
  */
 public class MonitorPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
 	protected Button displayButton;

 	protected Table table;
 	protected TableViewer tableViewer;

 	protected Button edit;
 	protected Button remove;
 	protected Button start;
 	protected Button stop;

 	protected List selection2;

 	/**
 	 * MonitorPreferencePage constructor comment.
 	 */
 	public MonitorPreferencePage() {
 		super();
 		noDefaultAndApplyButton();
 	}

 	/**
 	 * Create the preference options.
 	 *
 	 * @param parent org.eclipse.swt.widgets.Composite
 	 * @return org.eclipse.swt.widgets.Control
 	 */
 	protected Control createContents(Composite parent) {
 		initializeDialogUnits(parent);

 		Composite composite = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		layout.horizontalSpacing = convertHorizontalDLUsToPixels(4);
 		layout.verticalSpacing = convertVerticalDLUsToPixels(3);
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		composite.setLayout(layout);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL);
 		composite.setLayoutData(data);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(composite, ContextIds.PREF);

 		Label label = new Label(composite, SWT.WRAP);
 		label.setText(Messages.preferenceDescription);
 		data = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		data.horizontalSpan = 2;
 		label.setLayoutData(data);

 		displayButton = new Button(composite, SWT.CHECK);
 		displayButton.setText(Messages.prefShowView);
 		displayButton.setSelection(MonitorUIPlugin.getShowOnActivityPreference());
 		data = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		data.horizontalSpan = 2;
 		displayButton.setLayoutData(data);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(displayButton, ContextIds.PREF_SHOW);

 		label = new Label(composite, SWT.NONE);
 		label.setText("");
 		data = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		data.horizontalSpan = 2;
 		label.setLayoutData(data);

 		label = new Label(composite, SWT.WRAP);
 		label.setText(Messages.monitorList);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		data.horizontalSpan = 2;
 		label.setLayoutData(data);

 		table = new Table(composite, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI | SWT.FULL_SELECTION);
 		data = new GridData(GridData.FILL_BOTH);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(table, ContextIds.PREF_MONITORS);

 		table.setLayoutData(data);
 		table.setHeaderVisible(true);
 		table.setLinesVisible(true);

 		TableLayout tableLayout = new TableLayout();

 		TableColumn statusColumn = new TableColumn(table, SWT.NONE);
 		statusColumn.setText(Messages.columnStatus);
 		ColumnWeightData colData = new ColumnWeightData(6, 60, true);
 		tableLayout.addColumnData(colData);

 		TableColumn remoteColumn = new TableColumn(table, SWT.NONE);
 		remoteColumn.setText(Messages.columnRemote);
 		colData = new ColumnWeightData(12, 120, true);
 		tableLayout.addColumnData(colData);

 		TableColumn httpColumn = new TableColumn(table, SWT.NONE);
 		httpColumn.setText(Messages.columnType);
 		colData = new ColumnWeightData(5, 55, true);
 		tableLayout.addColumnData(colData);

 		TableColumn localColumn = new TableColumn(table, SWT.NONE);
 		localColumn.setText(Messages.columnLocal);
 		colData = new ColumnWeightData(5, 50, true);
 		tableLayout.addColumnData(colData);

 		table.setLayout(tableLayout);

 		tableViewer = new TableViewer(table);
 		tableViewer.setContentProvider(new MonitorContentProvider());
 		tableViewer.setLabelProvider(new MonitorTableLabelProvider());
 		tableViewer.setInput("root");

 		tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent event) {
 				setSelection(event.getSelection());
 			}
 		});

 		Composite buttonComp = new Composite(composite, SWT.NONE);
 		layout = new GridLayout();
 		layout.horizontalSpacing = 0;
 		layout.verticalSpacing = convertVerticalDLUsToPixels(3);
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		layout.numColumns = 1;
 		buttonComp.setLayout(layout);
 		data = new GridData(GridData.HORIZONTAL_ALIGN_END | GridData.VERTICAL_ALIGN_FILL);
 		buttonComp.setLayoutData(data);

 		Button add = SWTUtil.createButton(buttonComp, Messages.add);
 		add.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				MonitorDialog dialog = new MonitorDialog(getShell());
 				if (dialog.open() == Window.CANCEL)
 					return;
 				tableViewer.refresh();

 				IMonitor[] monitors = MonitorCore.getMonitors();
 				Object monitor = monitors[monitors.length - 1];
 				tableViewer.setSelection(new StructuredSelection(monitor));
 			}
 		});

 		edit = SWTUtil.createButton(buttonComp, Messages.edit);
 		edit.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				IMonitor monitor = (IMonitor) getSelection().get(0);
 				IMonitorWorkingCopy wc = monitor.createWorkingCopy();

 				MonitorDialog dialog = new MonitorDialog(getShell(), wc);
 				if (dialog.open() != Window.CANCEL) {
 					try {
 						tableViewer.refresh(wc.save());
 					} catch (Exception ex) {
 						// ignore
 					}
 				}
 			}
 		});
 		edit.setEnabled(false);

 		remove = SWTUtil.createButton(buttonComp, Messages.remove);
 		remove.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				Iterator iterator = getSelection().iterator();
 				while (iterator.hasNext()) {
 					IMonitor monitor = (IMonitor) iterator.next();
 					try {
 						monitor.delete();
 					} catch (Exception ex) {
 						// ignore
 					}
 					tableViewer.remove(monitor);

 					IMonitor[] monitors = MonitorCore.getMonitors();
 					if (monitors.length > 0) {
 						Object monitor2 = monitors[monitors.length - 1];
 						tableViewer.setSelection(new StructuredSelection(monitor2));
 					}
 				}
 			}
 		});
 		remove.setEnabled(false);

 		start = SWTUtil.createButton(buttonComp, Messages.start);
 		data = (GridData) start.getLayoutData();
 		data.verticalIndent = 9;
 		start.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				Iterator iterator = getSelection().iterator();
 				while (iterator.hasNext()) {
 					IMonitor monitor = (IMonitor) iterator.next();
 					try {
 						monitor.start();
 					} catch (CoreException ce) {
 					MessageDialog.openError(getShell(), Messages.errorDialogTitle, ce.getStatus().getMessage());
 					} catch (Exception ce) {
 						MessageDialog.openError(getShell(), Messages.errorDialogTitle, ce.getMessage());
 					}
 					tableViewer.refresh(monitor, true);
 				}
 				tableViewer.setSelection(tableViewer.getSelection());
 			}
 		});
 		start.setEnabled(false);

 		stop = SWTUtil.createButton(buttonComp, Messages.stop);
 		stop.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				Iterator iterator = getSelection().iterator();
 				while (iterator.hasNext()) {
 					IMonitor monitor = (IMonitor) iterator.next();
 					try {
 						monitor.stop();
 					} catch (Exception ex) {
 						// ignore
 					}
 					tableViewer.refresh(monitor, true);
 				}
 				tableViewer.setSelection(tableViewer.getSelection());
 			}
 		});
 		stop.setEnabled(false);

 		Dialog.applyDialogFont(composite);

 		return composite;
 	}

 	/**
 	 * Initializes this preference page using the passed workbench.
 	 *
 	 * @param workbench the current workbench
 	 */
 	public void init(IWorkbench workbench) {
 		// do nothing
 	}

 	/**
 	 * Performs special processing when this page's Defaults button has been pressed.
 	 * <p>
 	 * This is a framework hook method for sublcasses to do special things when
 	 * the Defaults button has been pressed.
 	 * Subclasses may override, but should call <code>super.performDefaults</code>.
 	 * </p>
 	 */
 	protected void performDefaults() {
 		displayButton.setSelection(MonitorUIPlugin.getDefaultShowOnActivityPreference());
 		super.performDefaults();
 	}

 	/**
 	 * @see org.eclipse.jface.preference.IPreferencePage#performOk()
 	 */
 	public boolean performOk() {
 		MonitorUIPlugin.setShowOnActivityPreference(displayButton.getSelection());
 		MonitorUIPlugin.getInstance().savePluginPreferences();
 		return true;
 	}

 	protected List getSelection() {
 		return selection2;
 	}

 	protected void setSelection(ISelection sel2) {
 		IStructuredSelection sel = (IStructuredSelection) sel2;
 		Iterator iterator = sel.iterator();
 		selection2 = new ArrayList();

 		while (iterator.hasNext()) {
 			Object obj = iterator.next();
 			if (obj instanceof IMonitor)
 				selection2.add(obj);
 		}

 		if (!selection2.isEmpty()) {
 			remove.setEnabled(true);

 			boolean allStopped = true;
 			boolean allStarted = true;

 			iterator = selection2.iterator();
 			while (iterator.hasNext()) {
 				IMonitor monitor = (IMonitor) iterator.next();
 				if (monitor.isRunning())
 					allStopped = false;
 				else
 					allStarted = false;
 			}
 			start.setEnabled(allStopped);
 			stop.setEnabled(allStarted);
 			edit.setEnabled(selection2.size() == 1 && allStopped);
 		} else {
 			edit.setEnabled(false);
 			remove.setEnabled(false);
 			start.setEnabled(false);
 			stop.setEnabled(false);
 		}
 	}

 	/**
 	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
 	 */
 	public void createControl(Composite parent) {
 		super.createControl(parent);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), ContextIds.PREF);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2003, 2005 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - Initial API and implementation
	*******************************************************************************/
	package org.eclipse.wst.internet.monitor.ui.internal;

	import java.util.ArrayList;
	import java.util.Iterator;
	import java.util.List;
	import org.eclipse.swt.*;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.*;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.jface.viewers.ColumnWeightData;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jface.viewers.TableLayout;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.window.Window;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPreferencePage;
	import org.eclipse.ui.PlatformUI;
	import org.eclipse.wst.internet.monitor.core.internal.provisional.IMonitor;
	import org.eclipse.wst.internet.monitor.core.internal.provisional.IMonitorWorkingCopy;
	import org.eclipse.wst.internet.monitor.core.internal.provisional.MonitorCore;
	/**
	* The preference page that holds monitor properties.
	*/
	public class MonitorPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
	protected Button displayButton;

	protected Table table;
	protected TableViewer tableViewer;

	protected Button edit;
	protected Button remove;
	protected Button start;
	protected Button stop;

	protected List selection2;

	/**
	* MonitorPreferencePage constructor comment.
	*/
	public MonitorPreferencePage() {
	super();
	noDefaultAndApplyButton();
	}

	/**
	* Create the preference options.
	*
	* @param parent org.eclipse.swt.widgets.Composite
	* @return org.eclipse.swt.widgets.Control
	*/
	protected Control createContents(Composite parent) {
	initializeDialogUnits(parent);

	Composite composite = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	layout.horizontalSpacing = convertHorizontalDLUsToPixels(4);
	layout.verticalSpacing = convertVerticalDLUsToPixels(3);
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	composite.setLayout(layout);
	GridData data = new GridData(GridData.FILL_HORIZONTAL \| GridData.VERTICAL_ALIGN_FILL);
	composite.setLayoutData(data);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(composite, ContextIds.PREF);

	Label label = new Label(composite, SWT.WRAP);
	label.setText(Messages.preferenceDescription);
	data = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	data.horizontalSpan = 2;
	label.setLayoutData(data);

	displayButton = new Button(composite, SWT.CHECK);
	displayButton.setText(Messages.prefShowView);
	displayButton.setSelection(MonitorUIPlugin.getShowOnActivityPreference());
	data = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	data.horizontalSpan = 2;
	displayButton.setLayoutData(data);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(displayButton, ContextIds.PREF_SHOW);

	label = new Label(composite, SWT.NONE);
	label.setText("");
	data = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	data.horizontalSpan = 2;
	label.setLayoutData(data);

	label = new Label(composite, SWT.WRAP);
	label.setText(Messages.monitorList);
	data = new GridData(GridData.FILL_HORIZONTAL);
	data.horizontalSpan = 2;
	label.setLayoutData(data);

	table = new Table(composite, SWT.BORDER \| SWT.V_SCROLL \| SWT.H_SCROLL \| SWT.MULTI \| SWT.FULL_SELECTION);
	data = new GridData(GridData.FILL_BOTH);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(table, ContextIds.PREF_MONITORS);

	table.setLayoutData(data);
	table.setHeaderVisible(true);
	table.setLinesVisible(true);

	TableLayout tableLayout = new TableLayout();

	TableColumn statusColumn = new TableColumn(table, SWT.NONE);
	statusColumn.setText(Messages.columnStatus);
	ColumnWeightData colData = new ColumnWeightData(6, 60, true);
	tableLayout.addColumnData(colData);

	TableColumn remoteColumn = new TableColumn(table, SWT.NONE);
	remoteColumn.setText(Messages.columnRemote);
	colData = new ColumnWeightData(12, 120, true);
	tableLayout.addColumnData(colData);

	TableColumn httpColumn = new TableColumn(table, SWT.NONE);
	httpColumn.setText(Messages.columnType);
	colData = new ColumnWeightData(5, 55, true);
	tableLayout.addColumnData(colData);

	TableColumn localColumn = new TableColumn(table, SWT.NONE);
	localColumn.setText(Messages.columnLocal);
	colData = new ColumnWeightData(5, 50, true);
	tableLayout.addColumnData(colData);

	table.setLayout(tableLayout);

	tableViewer = new TableViewer(table);
	tableViewer.setContentProvider(new MonitorContentProvider());
	tableViewer.setLabelProvider(new MonitorTableLabelProvider());
	tableViewer.setInput("root");

	tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	setSelection(event.getSelection());
	}
	});

	Composite buttonComp = new Composite(composite, SWT.NONE);
	layout = new GridLayout();
	layout.horizontalSpacing = 0;
	layout.verticalSpacing = convertVerticalDLUsToPixels(3);
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	layout.numColumns = 1;
	buttonComp.setLayout(layout);
	data = new GridData(GridData.HORIZONTAL_ALIGN_END \| GridData.VERTICAL_ALIGN_FILL);
	buttonComp.setLayoutData(data);

	Button add = SWTUtil.createButton(buttonComp, Messages.add);
	add.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	MonitorDialog dialog = new MonitorDialog(getShell());
	if (dialog.open() == Window.CANCEL)
	return;
	tableViewer.refresh();

	IMonitor[] monitors = MonitorCore.getMonitors();
	Object monitor = monitors[monitors.length - 1];
	tableViewer.setSelection(new StructuredSelection(monitor));
	}
	});

	edit = SWTUtil.createButton(buttonComp, Messages.edit);
	edit.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	IMonitor monitor = (IMonitor) getSelection().get(0);
	IMonitorWorkingCopy wc = monitor.createWorkingCopy();

	MonitorDialog dialog = new MonitorDialog(getShell(), wc);
	if (dialog.open() != Window.CANCEL) {
	try {
	tableViewer.refresh(wc.save());
	} catch (Exception ex) {
	// ignore
	}
	}
	}
	});
	edit.setEnabled(false);

	remove = SWTUtil.createButton(buttonComp, Messages.remove);
	remove.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	Iterator iterator = getSelection().iterator();
	while (iterator.hasNext()) {
	IMonitor monitor = (IMonitor) iterator.next();
	try {
	monitor.delete();
	} catch (Exception ex) {
	// ignore
	}
	tableViewer.remove(monitor);

	IMonitor[] monitors = MonitorCore.getMonitors();
	if (monitors.length > 0) {
	Object monitor2 = monitors[monitors.length - 1];
	tableViewer.setSelection(new StructuredSelection(monitor2));
	}
	}
	}
	});
	remove.setEnabled(false);

	start = SWTUtil.createButton(buttonComp, Messages.start);
	data = (GridData) start.getLayoutData();
	data.verticalIndent = 9;
	start.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	Iterator iterator = getSelection().iterator();
	while (iterator.hasNext()) {
	IMonitor monitor = (IMonitor) iterator.next();
	try {
	monitor.start();
	} catch (CoreException ce) {
	MessageDialog.openError(getShell(), Messages.errorDialogTitle, ce.getStatus().getMessage());
	} catch (Exception ce) {
	MessageDialog.openError(getShell(), Messages.errorDialogTitle, ce.getMessage());
	}
	tableViewer.refresh(monitor, true);
	}
	tableViewer.setSelection(tableViewer.getSelection());
	}
	});
	start.setEnabled(false);

	stop = SWTUtil.createButton(buttonComp, Messages.stop);
	stop.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	Iterator iterator = getSelection().iterator();
	while (iterator.hasNext()) {
	IMonitor monitor = (IMonitor) iterator.next();
	try {
	monitor.stop();
	} catch (Exception ex) {
	// ignore
	}
	tableViewer.refresh(monitor, true);
	}
	tableViewer.setSelection(tableViewer.getSelection());
	}
	});
	stop.setEnabled(false);

	Dialog.applyDialogFont(composite);

	return composite;
	}

	/**
	* Initializes this preference page using the passed workbench.
	*
	* @param workbench the current workbench
	*/
	public void init(IWorkbench workbench) {
	// do nothing
	}

	/**
	* Performs special processing when this page's Defaults button has been pressed.
	* <p>
	* This is a framework hook method for sublcasses to do special things when
	* the Defaults button has been pressed.
	* Subclasses may override, but should call <code>super.performDefaults</code>.
	* </p>
	*/
	protected void performDefaults() {
	displayButton.setSelection(MonitorUIPlugin.getDefaultShowOnActivityPreference());
	super.performDefaults();
	}

	/**
	* @see org.eclipse.jface.preference.IPreferencePage#performOk()
	*/
	public boolean performOk() {
	MonitorUIPlugin.setShowOnActivityPreference(displayButton.getSelection());
	MonitorUIPlugin.getInstance().savePluginPreferences();
	return true;
	}

	protected List getSelection() {
	return selection2;
	}

	protected void setSelection(ISelection sel2) {
	IStructuredSelection sel = (IStructuredSelection) sel2;
	Iterator iterator = sel.iterator();
	selection2 = new ArrayList();

	while (iterator.hasNext()) {
	Object obj = iterator.next();
	if (obj instanceof IMonitor)
	selection2.add(obj);
	}

	if (!selection2.isEmpty()) {
	remove.setEnabled(true);

	boolean allStopped = true;
	boolean allStarted = true;

	iterator = selection2.iterator();
	while (iterator.hasNext()) {
	IMonitor monitor = (IMonitor) iterator.next();
	if (monitor.isRunning())
	allStopped = false;
	else
	allStarted = false;
	}
	start.setEnabled(allStopped);
	stop.setEnabled(allStarted);
	edit.setEnabled(selection2.size() == 1 && allStopped);
	} else {
	edit.setEnabled(false);
	remove.setEnabled(false);
	start.setEnabled(false);
	stop.setEnabled(false);
	}
	}

	/**
	* @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
	*/
	public void createControl(Composite parent) {
	super.createControl(parent);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), ContextIds.PREF);
	}
	}