public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
ValidationHelper.NotNull(value, "value");
ValidationHelper.OfType(value, "value", typeof(ThemeDictionaryBase));
Util.EnsureNotNull <object>();
Util.EnsureOfType <object>(typeof(System.Windows.ResourceDictionary));
if (destinationType != typeof(System.Windows.ResourceDictionary))
{
return(base.ConvertTo(context, culture, value, destinationType));
}
var themeDictionaryBase = (ThemeDictionaryBase)value;
var result = new System.Windows.ResourceDictionary {
Source = Manager.ResourcesUri
};
System.Windows.ResourceDictionary resources;
switch (themeDictionaryBase.Source)
{
case ThemeResources.Light:
resources = new System.Windows.ResourceDictionary {
Source = Manager.LightBrushesDictionaryUri
};
result.SafeSet(resources);
break;
case ThemeResources.LightGray:
resources = new System.Windows.ResourceDictionary {
Source = Manager.LightGrayBrushesDictionaryUri
};
result.SafeSet(resources);
break;
case ThemeResources.DarkGray:
resources = new System.Windows.ResourceDictionary {
Source = Manager.DarkGrayBrushesDictionaryUri
};
result.SafeSet(resources);
break;
case ThemeResources.Dark:
resources = new System.Windows.ResourceDictionary {
Source = Manager.DarkBrushesDictionaryUri
};
result.SafeSet(resources);
break;
case ThemeResources.Inherited:
var themeDictionary = themeDictionaryBase as ThemeDictionary;
if (themeDictionary == null)
{
throw new InvalidOperationException("Dictionary must be of type ThemeDictionary");
}
if (themeDictionary.Control == null || !themeDictionary.Control.IsAlive)
{
throw new InvalidOperationException("ThemeDictionary must be assigned with control before to be converted to System.Windows.ResourceDictionary");
}
var control = (FrameworkElement)themeDictionary.Control.Target;
foreach (var resourceKey in themeDictionary.Keys)
{
result.SafeSet(resourceKey, control.FindResource(resourceKey));
}
break;
}
result.SafeSet <ThemeResource, object>(themeDictionaryBase);
return(result);
}