Bug 148551 [Import/Export] Import File System Problem
When going to import some files if you choose General, then Filesystem. As you browse to the folder where you want to import items from and select it, the option to "Select All" is not available until you either select the folder or a file in the folder.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardFileSystemResourceImportPage1.java
*
     * @param parent the parent composite
     * @param id the id of the button (see
     *  <code>IDialogConstants.*_ID</code> constants 
     *  for standard dialog button ids)
     * @param label the label from the button
     * @param defaultButton <code>true</code> if the button is to be the
     *   default button, and <code>false</code> otherwise
     */
    protected Button createButton(Composite parent, int id, String label,
            boolean defaultButton) {
        
        ((GridLayout) parent.getLayout()).numColumns++;
        Button button = new Button(parent, SWT.PUSH);
        button.setFont(parent.getFont());
        GridData buttonData = new GridData(GridData.FILL_HORIZONTAL);
        button.setLayoutData(buttonData);
        button.setData(new Integer(id));
        button.setText(label);
        if (defaultButton) {
            Shell shell = parent.getShell();
            if (shell != null) {
                shell.setDefaultButton(button);
            }
            button.setFocus();
        }
        return button;
    }
    /**
     * Creates the buttons for selecting specific types or selecting all or none of the