Bug 157646 [Import/Export] "Import Existing Project" from zip locks file - prevents deletion
Build: M20060629-1905 Even though I cancel the Import Existing Project wizard without completing it, the zip file selected becomes (and remains) locked and cannot be deleted until the workbench is closed. Steps: File > Import > Existing Projects Into Workspace Select a zip file that does not contain any projects Cancel the wizard, but leave the workbench running Attempt to delete the zipfile Result: On Windows XP, this will result in system error stating: "Cannot delete <filename>: It is being used by another person or program." This problem will continue until the workbench is closed.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardProjectsImportPage.java
if (!contents[i].getName().equals(
						IDEApplication.METADATA_FOLDER)) {
					collectProjectFilesFromDirectory(files, contents[i],
							monitor);
				}
			}
		}
		return true;
	}
	/**
	 * Collect the list of .project files that are under directory into files.
	 * 
	 * @param files
	 * @param monitor
	 *            The monitor to report to
	 * @return boolean <code>true</code> if the operation was completed.
	 */
	private boolean collectProjectFilesFromProvider(Collection files,
			ILeveledImportStructureProvider provider, Object entry, int level,
			IProgressMonitor monitor) {
		if (monitor.isCanceled()) {
			return false;
		}
		monitor.subTask(NLS.bind(
				DataTransferMessages.WizardProjectsImportPage_CheckingMessage,
				provider.getLabel(entry)));
		List children = provider.getChildren(entry);
		if (children == null) {
			children = new ArrayList(1);
		}