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
IOverwriteQuery {
	/**
	 * The name of the folder containing metadata information for the workspace.
	 */
	public static final String METADATA_FOLDER = ".metadata"; 
	/**
	 * The import structure provider.
	 * 
	 * @since 3.4
	 */
	private ILeveledImportStructureProvider structureProvider;
	/**
	 * Class declared public only for test suite.
	 * 
	 */
	public class ProjectRecord {
		File projectSystemFile;
		Object projectArchiveFile;
		String projectName;
		Object parent;
		int level;
		IProjectDescription description;
		/**
		 * Create a record for a project based on the info in the file.
		 * 
		 * @param file
		 */
		ProjectRecord(File file) {
			projectSystemFile = file;
			setProjectName();