/// <summary>
/// Attempts to convert a RibbonControlLength instance to the given type.
/// </summary>
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (destinationType == null)
{
throw new ArgumentNullException("destinationType");
}
if (value != null && value is RibbonControlLength)
{
RibbonControlLength length = (RibbonControlLength)value;
if (destinationType == typeof(string))
{
return(ToString(length, culture));
}
if (destinationType == typeof(InstanceDescriptor))
{
ConstructorInfo ci = typeof(RibbonControlLength).GetConstructor(new Type[] { typeof(double), typeof(RibbonControlLengthUnitType) });
return(new InstanceDescriptor(ci, new object[] { length.Value, length.RibbonControlLengthUnitType }));
}
}
throw GetConvertToException(value, destinationType);
}
private static bool ValidateWidth(object width)
{
RibbonControlLength length = (RibbonControlLength)width;
if (double.IsInfinity(length.Value) || DoubleUtil.LessThanOrClose(length.Value, 0))
{
return(false);
}
return(true);
}
private static bool ValidateMaxWidth(object maxWidth)
{
RibbonControlLength length = (RibbonControlLength)maxWidth;
if (length.IsAuto || length.IsStar || DoubleUtil.LessThan(length.Value, 0))
{
return(false);
}
return(true);
}
/// <summary>
/// Converts a RibbonControlLength instance to a String given the CultureInfo.
/// </summary>
internal static string ToString(RibbonControlLength length, CultureInfo cultureInfo)
{
switch (length.RibbonControlLengthUnitType)
{
// for Auto print out "Auto". value is always "1.0"
case RibbonControlLengthUnitType.Auto:
return("Auto");
case RibbonControlLengthUnitType.Item:
return(Convert.ToString(length.Value, cultureInfo) + "items");
// Star has one special case when value is "1.0".
// in this case drop value part and print only "Star"
case RibbonControlLengthUnitType.Star:
return(DoubleUtil.IsOne(length.Value) ? "*" : Convert.ToString(length.Value, cultureInfo) + "*");
// for Pixel print out the numeric value. "px" can be omitted.
default:
return(Convert.ToString(length.Value, cultureInfo));
}
}
