/// <summary>
/// Cuts the selected text and puts it in the clipboard.
/// </summary>
public void Cut()
{
if (_textArea.SelectionManager.HasSomethingSelected)
{
if (CopyTextToClipboard(_textArea.SelectionManager.SelectedText))
{
if (_textArea.SelectionManager.SelectionIsReadonly)
{
return;
}
// Remove text
_textArea.BeginUpdate();
_textArea.Caret.Position = _textArea.SelectionManager.Selections[0].StartPosition;
_textArea.SelectionManager.RemoveSelectedText();
_textArea.EndUpdate();
}
}
else if (_textArea.Document.TextEditorProperties.CutCopyWholeLine)
{
// No text was selected, select and cut the entire line
int curLineNr = _textArea.Document.GetLineNumberForOffset(_textArea.Caret.Offset);
LineSegment lineWhereCaretIs = _textArea.Document.GetLineSegment(curLineNr);
string caretLineText = _textArea.Document.GetText(lineWhereCaretIs.Offset, lineWhereCaretIs.TotalLength);
_textArea.SelectionManager.SetSelection(_textArea.Document.OffsetToPosition(lineWhereCaretIs.Offset), _textArea.Document.OffsetToPosition(lineWhereCaretIs.Offset + lineWhereCaretIs.TotalLength));
if (CopyTextToClipboard(caretLineText, true))
{
if (_textArea.SelectionManager.SelectionIsReadonly)
{
return;
}
// remove line
_textArea.BeginUpdate();
_textArea.Caret.Position = _textArea.Document.OffsetToPosition(lineWhereCaretIs.Offset);
_textArea.SelectionManager.RemoveSelectedText();
_textArea.Document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.PositionToEnd, new TextLocation(0, curLineNr)));
_textArea.EndUpdate();
}
}
}
protected void OnDragDrop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(typeof(string)))
{
_textArea.BeginUpdate();
_textArea.Document.UndoStack.StartUndoGroup();
try
{
int offset = _textArea.Caret.Offset;
if (_textArea.IsReadOnly(offset))
{
// prevent dragging text into readonly section
return;
}
if (e.Data.GetDataPresent(typeof(DefaultSelection)))
{
ISelection sel = (ISelection)e.Data.GetData(typeof(DefaultSelection));
if (sel.ContainsPosition(_textArea.Caret.Position))
{
return;
}
if (GetDragDropEffect(e) == DragDropEffects.Move)
{
if (SelectionManager.SelectionIsReadOnly(_textArea.Document, sel))
{
// prevent dragging text out of readonly section
return;
}
int len = sel.Length;
_textArea.Document.Remove(sel.Offset, len);
if (sel.Offset < offset)
{
offset -= len;
}
}
}
_textArea.SelectionManager.ClearSelection();
InsertString(offset, (string)e.Data.GetData(typeof(string)));
_textArea.Document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.WholeTextArea));
}
finally
{
_textArea.Document.UndoStack.EndUndoGroup();
_textArea.EndUpdate();
}
}
}
