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
selectedProjects[index++] = (ProjectRecord) filesIterator
									.next();
						}
					} else if (!dirSelected
							&& ArchiveFileManipulations.isZipFile(path)) {
						ZipFile sourceFile = getSpecifiedZipSourceFile(path);
						if (sourceFile == null) {
							return;
						}
						structureProvider = new ZipLeveledStructureProvider(sourceFile);
						Object child = structureProvider.getRoot();
						if (!collectProjectFilesFromProvider(files, child, 0, monitor)) {
							return;
						}
						Iterator filesIterator = files.iterator();
						selectedProjects = new ProjectRecord[files.size()];
						int index = 0;
						monitor.worked(50);
						monitor
								.subTask(DataTransferMessages.WizardProjectsImportPage_ProcessingMessage);
						while (filesIterator.hasNext()) {
							selectedProjects[index++] = (ProjectRecord) filesIterator
									.next();
						}
					}
					else if (dirSelected && directory.isDirectory()) {
						if (!collectProjectFilesFromDirectory(files, directory,
								null, monitor)) {
							return;
						}