private void CutOrDelete(IDataObject dataObject, out bool isDeleted)
{
isDeleted = false;
string Content = NodeTreeHelper.GetString(StateView.State.Node, PropertyName);
Debug.Assert(Content != null);
Debug.Assert(Start <= End);
Debug.Assert(End <= Content.Length);
if (Start < End)
{
if (dataObject != null)
{
dataObject.SetData(typeof(string), Content.Substring(Start, End - Start));
}
Content = Content.Substring(0, Start) + Content.Substring(End);
IFocusController Controller = StateView.ControllerView.Controller;
int OldCaretPosition = StateView.ControllerView.CaretPosition;
int NewCaretPosition = Start;
Controller.ChangeTextAndCaretPosition(StateView.State.ParentIndex, PropertyName, Content, OldCaretPosition, NewCaretPosition, true);
StateView.ControllerView.ClearSelection();
isDeleted = true;
}
}
/// <summary>
/// Replaces the selection with the content of the clipboard.
/// </summary>
public override void Paste(out bool isChanged)
{
isChanged = false;
if (ClipboardHelper.TryReadText(out string Text) && Text.Length > 0)
{
string Content = NodeTreeHelper.GetString(StateView.State.Node, PropertyName);
Debug.Assert(Content != null);
Debug.Assert(Start <= End);
Debug.Assert(End <= Content.Length);
Content = Content.Substring(0, Start) + Text + Content.Substring(End);
IFocusController Controller = StateView.ControllerView.Controller;
int OldCaretPosition = StateView.ControllerView.CaretPosition;
int NewCaretPosition = Start + Text.Length;
Controller.ChangeTextAndCaretPosition(StateView.State.ParentIndex, PropertyName, Content, OldCaretPosition, NewCaretPosition, false);
StateView.ControllerView.ClearSelection();
isChanged = true;
}
}