/// <summary>
/// Retrieves a collection containing a set of standard values
/// for the data type this validator is designed for. This
/// will return null if the data type does not support a
/// standard set of values.
/// </summary>
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext?context)
{
if (context is not null && context.Instance is not null)
{
object?instance = context.Instance;
PropertyDescriptor?imageListProp = ImageListUtils.GetImageListProperty(context.PropertyDescriptor, ref instance);
while (instance is not null && imageListProp is null)
{
PropertyDescriptorCollection props = TypeDescriptor.GetProperties(instance);
foreach (PropertyDescriptor prop in props)
{
if (typeof(ImageList).IsAssignableFrom(prop.PropertyType))
{
imageListProp = prop;
break;
}
}
if (imageListProp is null)
{
// We didn't find the image list in this component. See if the
// component has a "parent" property. If so, walk the tree...
PropertyDescriptor?parentProp = props[ParentImageListProperty];
if (parentProp is not null)
{
instance = parentProp.GetValue(instance);
}
else
{
// Stick a fork in us, we're done.
instance = null;
}
}
}
if (imageListProp is not null)
{
ImageList?imageList = (ImageList?)imageListProp.GetValue(instance);
if (imageList is not null)
{
// Create array to contain standard values
int nImages = imageList.Images.Count + 2;
object[] values = new object[nImages];
values[nImages - 2] = ImageList.Indexer.DefaultIndex;
values[nImages - 1] = -2;
// Fill in the array
for (int i = 0; i < nImages - 2; i++)
{
values[i] = i;
}
return(new StandardValuesCollection(values));
}
}
}
return(new StandardValuesCollection(
new object[]
{
ImageList.Indexer.DefaultIndex,
ImageList.Indexer.NoneIndex
}));
}
/// <devdoc>
/// Retrieves a collection containing a set of standard values
/// for the data type this validator is designed for. This
/// will return null if the data type does not support a
/// standard set of values.
/// </devdoc>
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
if (context != null && context.Instance != null)
{
object instance = context.Instance;
PropertyDescriptor imageListProp = ImageListUtils.GetImageListProperty(context.PropertyDescriptor, ref instance);
while (instance != null && imageListProp == null)
{
PropertyDescriptorCollection props = TypeDescriptor.GetProperties(instance);
foreach (PropertyDescriptor prop in props)
{
if (typeof(ImageList).IsAssignableFrom(prop.PropertyType))
{
imageListProp = prop;
break;
}
}
if (imageListProp == null)
{
// We didn't find the image list in this component. See if the
// component has a "parent" property. If so, walk the tree...
//
PropertyDescriptor parentProp = props[ParentImageListProperty];
if (parentProp != null)
{
instance = parentProp.GetValue(instance);
}
else
{
// Stick a fork in us, we're done.
//
instance = null;
}
}
}
if (imageListProp != null)
{
ImageList imageList = (ImageList)imageListProp.GetValue(instance);
if (imageList != null)
{
// Create array to contain standard values
//
object[] values;
int nImages = imageList.Images.Count;
if (IncludeNoneAsStandardValue)
{
values = new object[nImages + 1];
values[nImages] = -1;
}
else
{
values = new object[nImages];
}
// Fill in the array
//
for (int i = 0; i < nImages; i++)
{
values[i] = i;
}
return(new StandardValuesCollection(values));
}
}
}
if (IncludeNoneAsStandardValue)
{
return(new StandardValuesCollection(new object[] { -1 }));
}
else
{
return(new StandardValuesCollection(new object[0]));
}
}
public override TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
if ((context != null) && (context.Instance != null))
{
object instance = context.Instance;
PropertyDescriptor imageListProperty = ImageListUtils.GetImageListProperty(context.PropertyDescriptor, ref instance);
while ((instance != null) && (imageListProperty == null))
{
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(instance);
foreach (PropertyDescriptor descriptor2 in properties)
{
if (typeof(ImageList).IsAssignableFrom(descriptor2.PropertyType))
{
imageListProperty = descriptor2;
break;
}
}
if (imageListProperty == null)
{
PropertyDescriptor descriptor3 = properties[this.ParentImageListProperty];
if (descriptor3 != null)
{
instance = descriptor3.GetValue(instance);
continue;
}
instance = null;
}
}
if (imageListProperty != null)
{
ImageList list = (ImageList)imageListProperty.GetValue(instance);
if (list != null)
{
object[] objArray;
int count = list.Images.Count;
if (this.IncludeNoneAsStandardValue)
{
objArray = new object[count + 1];
objArray[count] = "";
}
else
{
objArray = new object[count];
}
StringCollection keys = list.Images.Keys;
for (int i = 0; i < keys.Count; i++)
{
if ((keys[i] != null) && (keys[i].Length != 0))
{
objArray[i] = keys[i];
}
}
return(new TypeConverter.StandardValuesCollection(objArray));
}
}
}
if (this.IncludeNoneAsStandardValue)
{
return(new TypeConverter.StandardValuesCollection(new object[] { "" }));
}
return(new TypeConverter.StandardValuesCollection(new object[0]));
}
