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
for (int i = 0; i < sourceNames.length; i++) {
				sourceNameField.add(sourceNames[i]);
			}
            
            overwriteExistingResourcesCheckbox.setSelection(settings
                    .getBoolean(STORE_OVERWRITE_EXISTING_RESOURCES_ID));
        }
    }
    /**
     * 	Since Finish was pressed, write widget values to the dialog store so that they
     *	will persist into the next invocation of this wizard page.
     *
     *	Note that this method is identical to the one that appears in the superclass.
     *	This is necessary because proper overriding of instance variables is not occurring.
     */
    protected void saveWidgetValues() {
        IDialogSettings settings = getDialogSettings();
        if (settings != null) {
            
            String[] sourceNames = settings.getArray(STORE_SOURCE_NAMES_ID);
            if (sourceNames == null) {
				sourceNames = new String[0];
			}
            sourceNames = addToHistory(sourceNames, sourceNameField.getText());
            settings.put(STORE_SOURCE_NAMES_ID, sourceNames);
            
            String[] selectedTypesNames = settings
                    .getArray(STORE_SELECTED_TYPES_ID);
            if (selectedTypesNames == null) {