/*internal override void OnItemRemoving(object item)
* {
* ListView instance = base.Context.Instance as ListView;
* if (instance != null)
* {
* ColumnHeaderEx column = item as ColumnHeaderEx;
* if (column != null)
* {
* IComponentChangeService service = base.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
* PropertyDescriptor member = null;
* if (service != null)
* {
* member = TypeDescriptor.GetProperties(base.Context.Instance)["Columns"];
* service.OnComponentChanging(base.Context.Instance, member);
* }
* instance.Columns.Remove(column);
* if ((service != null) && (member != null))
* {
* service.OnComponentChanged(base.Context.Instance, member, null, null);
* }
* }
* }
* }*/
protected override object SetItems(object editValue, object[] value)
{
if (editValue != null)
{
ColumnHeaderExCollection headers = editValue as ColumnHeaderExCollection;
if (headers != null)
{
headers.Clear();
ColumnHeaderEx[] destinationArray = new ColumnHeaderEx[value.Length];
Array.Copy(value, 0, destinationArray, 0, value.Length);
headers.AddRange(destinationArray);
}
}
return(editValue);
}
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (destinationType == null)
{
throw new ArgumentNullException(nameof(destinationType));
}
if (!(destinationType == typeof(InstanceDescriptor)) || !(value is ColumnHeaderEx))
{
return(base.ConvertTo(context, culture, value, destinationType));
}
ColumnHeaderEx header = (ColumnHeaderEx)value;
Type reflectionType = TypeDescriptor.GetReflectionType(value);
ConstructorInfo constructor;
InstanceDescriptor descriptor = null;
if (header.ImageIndex != -1)
{
constructor = reflectionType.GetConstructor(new Type[] { typeof(int) });
if (constructor != null)
{
descriptor = new InstanceDescriptor(constructor, new object[] { header.ImageIndex }, false);
}
}
if ((descriptor == null) && !string.IsNullOrEmpty(header.ImageKey))
{
constructor = reflectionType.GetConstructor(new Type[] { typeof(string) });
if (constructor != null)
{
descriptor = new InstanceDescriptor(constructor, new object[] { header.ImageKey }, false);
}
}
if (descriptor != null)
{
return(descriptor);
}
constructor = reflectionType.GetConstructor(Type.EmptyTypes);
if (constructor == null)
{
throw new ArgumentException("NoDefaultConstructor");
}
return(new InstanceDescriptor(constructor, new object[0], false));
}
protected virtual ListViewItem BuildItem(object obj)
{
var items = new string[Columns.Count];
for (int i = 0; i < Columns.Count; i++)
{
ColumnHeaderEx hdr = Columns[i];
var pd = dataSourceProperties.Find(hdr.Name, false);
if (pd != null)
{
var val = pd.GetValue(obj);
if (val == null || val is DBNull)
{
items[i] = hdr.NullValue;
}
else
{
var formattable = val as IFormattable;
if (formattable == null)
{
var customFormatter = hdr.FormatProvider as ICustomFormatter;
if (customFormatter == null)
{
items[i] = Convert.ToString(pd.GetValue(obj), hdr.FormatProvider);
}
else
{
items[i] = customFormatter.Format(hdr.Format, pd.GetValue(obj), hdr.FormatProvider);
}
}
else
{
items[i] = formattable.ToString(hdr.Format, hdr.FormatProvider);
}
}
continue;
}
if (dataSourceProperties.Count > i)
{
items[i] = Convert.ToString(dataSourceProperties[i].GetValue(obj));
}
}
return(new ListViewItem(items));
}
public new object Clone()
{
ColumnHeaderEx header = new ColumnHeaderEx()
{
Text = Text, TextAlign = TextAlign, Width = Width
};
header.DropDownContextMenu = DropDownContextMenu;
header.Format = Format;
header.FormatProvider = FormatProvider;
header.Hideable = Hideable;
header.NullValue = NullValue;
header.ShowDropDownButton = ShowDropDownButton;
header.Sortable = Sortable;
header.SortOrder = SortOrder;
header.Tag = (Tag is ICloneable) ? ((ICloneable)Tag).Clone() : Tag;
header.Extras.GroupingInfo = (Extras.GroupingInfo is ICloneable) ? ((ICloneable)Extras.GroupingInfo).Clone() : Extras.GroupingInfo;
return(header);
}
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
ColumnHeader hdr = value as ColumnHeader;
if (hdr == null)
{
return(base.ConvertFrom(context, culture, value));
}
var header = new ColumnHeaderEx {
Text = hdr.Text, TextAlign = hdr.TextAlign, Width = hdr.Width
};
// TODO: missing ImageList and index and owner ListView
header.Tag = hdr.Tag;
return(header);
}