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
projectFromDirectoryRadio = new Button(projectGroup, SWT.RADIO);
		projectFromDirectoryRadio
				.setText(DataTransferMessages.WizardProjectsImportPage_RootSelectTitle);
		
		this.directoryPathField = new Text(projectGroup, SWT.BORDER);
		this.directoryPathField.setLayoutData(new GridData(
				GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL));
		
		browseDirectoriesButton = new Button(projectGroup, SWT.PUSH);
		browseDirectoriesButton
				.setText(DataTransferMessages.DataTransfer_browse);
		setButtonLayoutData(browseDirectoriesButton);
		
		projectFromArchiveRadio = new Button(projectGroup, SWT.RADIO);
		projectFromArchiveRadio
				.setText(DataTransferMessages.WizardProjectsImportPage_ArchiveSelectTitle);
		
		archivePathField = new Text(projectGroup, SWT.BORDER);
		archivePathField.setLayoutData(new GridData(GridData.FILL_HORIZONTAL
				| GridData.GRAB_HORIZONTAL));
		
		browseArchivesButton = new Button(projectGroup, SWT.PUSH);
		browseArchivesButton.setText(DataTransferMessages.DataTransfer_browse);
		setButtonLayoutData(browseArchivesButton);
		projectFromDirectoryRadio.setSelection(true);
		archivePathField.setEnabled(false);
		browseArchivesButton.setEnabled(false);
		browseDirectoriesButton.addSelectionListener(new SelectionAdapter() {
			/*