Bug 221649 [Import/Export] ZipFileImportWizard has no option to change the FILE_IMPORT_MASK
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardArchiveFileResourceImportPage1.java
WizardFileSystemResourceImportPage1 implements Listener {
    ILeveledImportStructureProvider structureProvider;
    
    private static final String[] FILE_IMPORT_MASK = { "*.jar;*.zip;*.tar;*.tar.gz;*.tgz", "*.*" }; 
    
    private final static String STORE_SOURCE_NAMES_ID = "WizardZipFileResourceImportPage1.STORE_SOURCE_NAMES_ID"; 
    private final static String STORE_OVERWRITE_EXISTING_RESOURCES_ID = "WizardZipFileResourceImportPage1.STORE_OVERWRITE_EXISTING_RESOURCES_ID"; 
    private final static String STORE_SELECTED_TYPES_ID = "WizardZipFileResourceImportPage1.STORE_SELECTED_TYPES_ID"; 
    /**
     *	Creates an instance of this class
     * @param aWorkbench IWorkbench
     * @param selection IStructuredSelection
     */
    public WizardArchiveFileResourceImportPage1(IWorkbench aWorkbench,
            IStructuredSelection selection) {
        super("zipFileImportPage1", aWorkbench, selection); 
        setTitle(DataTransferMessages.ArchiveExport_exportTitle);
        setDescription(DataTransferMessages.ArchiveImport_description);
    }
    /**
     * Called when the user presses the Cancel button. Return a boolean
     * indicating permission to close the wizard.
     *
     * @return boolean
     */