/// <summary>
/// Handles the <see cref="AddValue"/> event
/// </summary>
protected virtual void OnAddValue(AddValueEventArgs <T> e)
{
if (AddValue != null)
{
AddValue(this, e);
}
}
/// <summary>
/// Creates the default data store for the list.
/// </summary>
/// <remarks>This is used to create a data store if one is not specified by the user.
/// This can be used by subclasses to provide default items to populate the list.</remarks>
/// <returns>The default data store.</returns>
protected override IEnumerable <object> CreateDefaultDataStore()
{
var type = typeof(T);
if (!type.IsEnum())
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "T must be an enumeration"));
}
var items = new ListItemCollection();
var values = Enum.GetValues(type);
var names = Enum.GetNames(type);
for (int i = 0; i < names.Length; i++)
{
var e = new AddValueEventArgs <T>((T)values.GetValue(i), true);
OnAddValue(e);
if (e.ShouldAdd)
{
items.Add(new EnumValue
{
Text = GetText != null ? GetText(e.Value) : names[i],
Key = Convert.ToString(Convert.ToInt32(e.Value, CultureInfo.InvariantCulture), CultureInfo.InvariantCulture)
});
}
}
if (SortAlphabetically)
{
items.Sort((x, y) => string.Compare(x.Text, y.Text, StringComparison.CurrentCultureIgnoreCase));
}
return(items);
}
protected override ListItemCollection CreateDefaultItems()
{
var type = typeof(T);
if (!type.IsEnum)
{
throw new EtoException("T must be an enumeration");
}
var items = new ListItemCollection();
var values = Enum.GetValues(type);
var names = Enum.GetNames(type);
for (int i = 0; i < names.Length; i++)
{
var e = new AddValueEventArgs <T> ((T)values.GetValue(i), true);
if (e.ShouldAdd)
{
items.Add(new EnumValue {
Text = names[i],
Key = Convert.ToString(Convert.ToInt32(e.Value, CultureInfo.InvariantCulture), CultureInfo.InvariantCulture)
});
}
}
items.Sort((x, y) => string.Compare(x.Text, y.Text, StringComparison.CurrentCultureIgnoreCase));
return(items);
}
/// <summary>
/// Creates the default items.
/// </summary>
/// <returns>The default items.</returns>
protected override ListItemCollection CreateDefaultItems()
{
var type = typeof(T);
if (!type.IsEnum())
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "T must be an enumeration"));
}
var items = new ListItemCollection();
var values = Enum.GetValues(type);
var names = Enum.GetNames(type);
var isFlags = type.GetCustomAttribute <FlagsAttribute>(true) != null;
for (int i = 0; i < names.Length; i++)
{
var objValue = values.GetValue(i);
if (isFlags && !IncludeNoneFlag && (int)objValue == 0)
{
continue;
}
var value = (T)objValue;
var e = new AddValueEventArgs <T>(value, true);
OnAddValue(e);
if (e.ShouldAdd)
{
var enumValue = new EnumValue
{
Text = GetText != null?GetText(e.Value) : names[i],
Key = Convert.ToString(Convert.ToInt32(e.Value, CultureInfo.InvariantCulture), CultureInfo.InvariantCulture),
Value = value
};
if (isFlags)
{
// show combined flags as tooltip
var includedFlags = values.OfType <object>().Where(r => !Equals(r, value) && (((int)objValue & (int)r) != 0)).ToList();
if (includedFlags.Count > 1)
{
enumValue.ToolTip = string.Join(" | ", includedFlags.Select(r => GetText != null ? GetText((T)r) : Enum.GetName(type, r)));
}
}
items.Add(enumValue);
}
}
if (SortAlphabetically)
{
items.Sort((x, y) => string.Compare(x.Text, y.Text, StringComparison.CurrentCultureIgnoreCase));
}
return(items);
}
