Bug 162916 [Undo] [IDE] Invalid thread access from new file wizard
Build: I20061031-0656 1) Create a simple project 2) In the file system, add file "a.txt" to the project 3) Back in Eclipse, do File > New > File, select the project and enter a name of "a.txt". An internal error occurs because it is trying to open an error dialog from a modal context thread: org.eclipse.swt.SWTException: Invalid thread access at org.eclipse.swt.SWT.error(SWT.java:3407) at org.eclipse.swt.SWT.error(SWT.java:3330) at org.eclipse.swt.SWT.error(SWT.java:3301) at org.eclipse.swt.widgets.Widget.error(Widget.java:432) at org.eclipse.swt.widgets.Shell.<init>(Shell.java:271) at org.eclipse.swt.widgets.Shell.<init>(Shell.java:357) at org.eclipse.jface.window.Window.createShell(Window.java:482) at org.eclipse.jface.window.Window.create(Window.java:425) at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1111) at org.eclipse.jface.window.Window.open(Window.java:785) at org.eclipse.jface.dialogs.ErrorDialog.open(ErrorDialog.java:296) at org.eclipse.jface.dialogs.ErrorDialog.openError(ErrorDialog.java:360) at org.eclipse.jface.dialogs.ErrorDialog.openError(ErrorDialog.java:325) at org.eclipse.ui.dialogs.WizardNewFileCreationPage$4.run(WizardNewFileCreationPage.java:343) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:113)
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardNewFolderMainPage.java
}
		linkedResourceGroup = new CreateLinkedResourceGroup(IResource.FOLDER,
				new Listener() {
					public void handleEvent(Event e) {
						setPageComplete(validatePage());
						firstLinkCheck = false;
					}
				}, new CreateLinkedResourceGroup.IStringValue() {
					public String getValue() {
						return resourceGroup.getResource();
					}
					public void setValue(String string) {
						resourceGroup.setResource(string);
					}
				});
	}
	/**
	 * (non-Javadoc) Method declared on IDialogPage.
	 */
	public void createControl(Composite parent) {
		initializeDialogUnits(parent);
		
		Composite composite = new Composite(parent, SWT.NONE);
		composite.setFont(parent.getFont());
		composite.setLayout(new GridLayout());
		composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL
				| GridData.HORIZONTAL_ALIGN_FILL));
		PlatformUI.getWorkbench().getHelpSystem().setHelp(composite,
				IIDEHelpContextIds.NEW_FOLDER_WIZARD_PAGE);
		resourceGroup = new ResourceAndContainerGroup(composite, this,