gistfile1.txt

public class BooleanToVisibilityConverter implements IValueConverter {

    public static final String CONVERTER_NAME = "ToVisibility";

    public static final String PARAMETER_INVERT_TAG = "invert";

    public static final String PARAMETER_INVISIBLE_TAG = "invisible";

    @Override
    public String getBindingName() {
        return CONVERTER_NAME;
    }

    @Override
    public Object convert(Object value, Class<?> targetType, Object parameter, Locale culture) {
        boolean result = false;

        if (value != null && value instanceof Boolean) {
            result = ((Boolean) value);
        } else if (value != null) {
            result = true;
        }

        boolean invert = false;
        boolean invisible = false;
        if (parameter instanceof String) {
            String localParameter = (String) parameter;
            if (localParameter.toLowerCase().contains(PARAMETER_INVERT_TAG)) {
                invert = true;
            }
            if (localParameter.toLowerCase().contains(PARAMETER_INVISIBLE_TAG)) {
                invisible = true;
            }
        }

        if (invert) {
            result = !result;
        }

        return result ? View.VISIBLE : (invisible) ? View.INVISIBLE : View.GONE;
    }

    @Override
    public Object convertBack(Object value, Class<?> targetType, Object parameter, Locale culture) {
        return IBinding.noValue;
    }

}