void resetDefWidthValue(String defWidthValue) {
        this.defWidthValue = defWidthValue;
        int index = Arrays.asList(arrDefValuetoIndex).indexOf(defWidthValue);
        cmbByteWidth.select(index);
    }
Set preferences to show a font. Use null to show default font.

@param aFontData the font to be shown.
plugins/org.jkiss.dbeaver.ui.editors.hex/src/org/jkiss/dbeaver/ui/editors/binary/pref/HexPreferencesManager.java