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
* default location for a project
		 * 
		 * @param path
		 *            The path to examine
		 * @return Whether the given path is the default location for a project
		 */
		private boolean isDefaultLocation(IPath path) {
			
			
			if (path.segmentCount() < 2)
				return false;
			return path.removeLastSegments(2).toFile().equals(
					Platform.getLocation().toFile());
		}
		/**
		 * Get the name of the project
		 * 
		 * @return String
		 */
		public String getProjectName() {
			return projectName;
		}
	}
	
	private final static String STORE_COPY_PROJECT_ID = "WizardProjectsImportPage.STORE_COPY_PROJECT_ID"; 
	private final static String STORE_ARCHIVE_SELECTED = "WizardProjectsImportPage.STORE_ARCHIVE_SELECTED"; 
	private Text directoryPathField;
	private CheckboxTreeViewer projectsList;
	private Button copyCheckbox;
	private boolean copyFiles = false;