Bug 312959 [Import/Export] importing file from big disk hangs UI
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardFileSystemResourceImportPage1.java
implements Listener {
    
    protected Combo sourceNameField;
    protected Button overwriteExistingResourcesCheckbox;
    protected Button createContainerStructureButton;
    protected Button createOnlySelectedButton;
    protected Button createVirtualFoldersButton;
    protected Button createLinksInWorkspaceButton;
    
	protected Button advancedButton;
    protected RelativePathVariableGroup relativePathVariableGroup;
    
    protected String pathVariable;
    
    protected Button sourceBrowseButton;
    protected Button selectTypesButton;
    protected Button selectAllButton;
    protected Button deselectAllButton;
    
    private boolean entryChanged = false;
    
    private FileSystemStructureProvider fileSystemStructureProvider = new FileSystemStructureProvider();
    
    private final static String STORE_SOURCE_NAMES_ID = "WizardFileSystemResourceImportPage1.STORE_SOURCE_NAMES_ID";
    private final static String STORE_OVERWRITE_EXISTING_RESOURCES_ID = "WizardFileSystemResourceImportPage1.STORE_OVERWRITE_EXISTING_RESOURCES_ID";
    private final static String STORE_CREATE_CONTAINER_STRUCTURE_ID = "WizardFileSystemResourceImportPage1.STORE_CREATE_CONTAINER_STRUCTURE_ID";
    private final static String STORE_CREATE_VIRTUAL_FOLDERS_ID = "WizardFileSystemResourceImportPage1.STORE_CREATE_VIRTUAL_FOLDERS_ID";