Bug 191662 [Import/Export] Warn of duplicate projects in project import wizard
Build ID: I20070601-1539 Steps To Reproduce: 1. Create a project. 2. Export it to *.zip file. 3. Close the project. 4. Try to import it. 5. Empty projects list. More information: This is pretty annoying, since I am using mylar and a workspace with many closed projects. If I try to import a project that already exists, I see nothing and I am pretty confused (there is no warning).
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardProjectsImportPage.java
public boolean createProjects() {
		saveWidgetValues();
		final Object[] selected = projectsList.getCheckedElements();
		WorkspaceModifyOperation op = new WorkspaceModifyOperation() {
			protected void execute(IProgressMonitor monitor)
					throws InvocationTargetException, InterruptedException {
				try {
					monitor.beginTask("", selected.length); 
					if (monitor.isCanceled()) {
						throw new OperationCanceledException();
					}
					for (int i = 0; i < selected.length; i++) {
						createExistingProject((ProjectRecord) selected[i],
								new SubProgressMonitor(monitor, 1));
					}
				} finally {
					monitor.done();
				}
			}
		};
		
		try {
			getContainer().run(true, true, op);
		} catch (InterruptedException e) {
			return false;
		} catch (InvocationTargetException e) {
			
			Throwable t = e.getTargetException();
			String message = DataTransferMessages.WizardExternalProjectImportPage_errorMessage;
			IStatus status;