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
* (non-Javadoc)
			 * 
			 * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
			 */
			public void widgetSelected(SelectionEvent e) {
				if (projectFromDirectoryRadio.getSelection()) {
					updateProjectsList(directoryPathField.getText().trim());
				} else {
					updateProjectsList(archivePathField.getText().trim());
				}
			}
		});
		Dialog.applyDialogFont(refresh);
		setButtonLayoutData(refresh);
	}
	/**
	 * Create the area where you select the root directory for the projects.
	 * 
	 * @param workArea
	 *            Composite
	 */
	private void createProjectsRoot(Composite workArea) {
		
		Composite projectGroup = new Composite(workArea, SWT.NONE);
		GridLayout layout = new GridLayout();
		layout.numColumns = 3;
		layout.makeColumnsEqualWidth = false;
		layout.marginWidth = 0;
		projectGroup.setLayout(layout);
		projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));