/// <summary>
/// Sets flag bit(s)
/// </summary>
/// <param name="flag">The flag bit(s) to set</param>
/// <param name="setting">True to set, false to clear</param>
void SetFlag(OperationFlag flag, bool setting)
{
if (setting)
{
m_Flag |= flag;
}
else
{
m_Flag &= (~flag);
}
}
/// <summary>
/// Sets flag bit(s)
/// </summary>
/// <param name="flag">The flag bit(s) to set</param>
/// <param name="setting">True to set, false to clear</param>
void SetFlag(OperationFlag flag, bool setting)
{
if (setting)
m_Flag |= flag;
else
m_Flag &= (~flag);
}
/// <summary>
/// Is a flag bit set?
/// </summary>
/// <param name="flag">The flag(s) to check for (may be a combination of more
/// than one flag)</param>
/// <returns>True if any of the supplied flag bits are set</returns>
bool IsFlagSet(OperationFlag flag)
{
return((m_Flag & flag) != 0);
}
/// <summary>
/// Is a flag bit set?
/// </summary>
/// <param name="flag">The flag(s) to check for (may be a combination of more
/// than one flag)</param>
/// <returns>True if any of the supplied flag bits are set</returns>
bool IsFlagSet(OperationFlag flag)
{
return ((m_Flag & flag)!=0);
}
public static void ClearOperationModeFlag(OperationFlag flagValue)
{
_operationLevelFlag &= ~((int)flagValue);
}
public static bool IsOperationModeFlagSet(OperationFlag flagValue)
{
return((_operationLevelFlag & (int)flagValue) > 0);
}
public static void SetOperationModeFlag(OperationFlag flagValue)
{
_operationLevelFlag = _operationLevelFlag | (int)flagValue;
ValidateFlag();
}
/// <summary>
/// Edits the specified object's value using the editor style indicated by the GetEditStyle method.
/// </summary>
/// <param name="context">An ITypeDescriptorContext that can be used to gain additional context information.</param>
/// <param name="provider">An IServiceProvider that this editor can use to obtain services.</param>
/// <param name="value">The object to edit.</param>
/// <returns>The new value of the object. If the value of the object has not changed, this should return the same object it was passed.</returns>
public override object EditValue(
ITypeDescriptorContext context,
IServiceProvider provider,
object value)
{
Type type = value.GetType();
if (type.FullName != typeof(TEnum).FullName)
{
throw new ArgumentException(string.Format(" {0}\nActual: {1}", typeof(TEnum), type));
}
if (!type.IsEnum ||
!type.CustomAttributes.Any(customAttr =>
customAttr.AttributeType == typeof(FlagsAttribute)))
{
throw new InvalidEnumArgumentException();
}
var winFormsSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
TEnum enumValue = (TEnum)(value ?? default(TEnum));
if (winFormsSvc != null)
{
TEnum fullSelection = EnumExtansions.Combine(EnumExtansions.GetValues <TEnum>());
using (var control = new UserControl()
{
BackColor = SystemColors.Control
})
{
var listbox = new CheckedListBox()
{
Dock = DockStyle.Fill,
CheckOnClick = true,
};
var listValues = EnumExtansions.GetValues <TEnum>().Select(val =>
new
{
Object = val,
IsChecked = EnumExtansions.HasFlag(enumValue, val),
});
listbox.Items.Add("Select all",
fullSelection.Equals(value));
foreach (var item in listValues)
{
listbox.Items.Add(item.Object, item.IsChecked);
}
OperationFlag isChecking = false;
listbox.ItemCheck += (s, e) =>
{
if (!isChecking)
{
using (isChecking.Flip())
{
if (e.Index == 0)
{
for (int i = 1; i < listbox.Items.Count; i++)
{
listbox.SetItemChecked(i, (e.NewValue == CheckState.Checked) ^
((TEnum)listbox.Items[i]).Equals(default(TEnum)));
}
value = e.NewValue == CheckState.Checked
? fullSelection
: default(TEnum);
}
else
{
var updatedValues = listbox.Items.Cast <object>()
.Select((Item, Index) => new { Item, Index })
.Where(item => (item.Index == e.Index && e.NewValue == CheckState.Checked) ||
(listbox.GetItemChecked(item.Index) && (item.Index != e.Index)))
.Select(item => item.Item)
.OfType <TEnum>();
value = EnumExtansions.Combine(updatedValues);
listbox.SetItemChecked(0, fullSelection.Equals(value));
}
}
}
};
var okButton = new Button()
{
Text = "Ok",
Dock = DockStyle.Bottom,
BackColor = SystemColors.ButtonFace,
};
okButton.Click += delegate
{
winFormsSvc.CloseDropDown();
};
control.Controls.Add(listbox);
control.Controls.Add(okButton);
winFormsSvc.DropDownControl(control);
}
}
return(value);
}
