static void OnPaste(object target, ExecutedRoutedEventArgs args)
{
TextArea textArea = GetTextArea(target);
if (textArea != null && textArea.Document != null)
{
IDataObject dataObject;
try
{
dataObject = Clipboard.GetDataObject();
}
catch (ExternalException)
{
return;
}
if (dataObject == null)
{
return;
}
var pastingEventArgs = new DataObjectPastingEventArgs(dataObject, false, DataFormats.UnicodeText);
textArea.RaiseEvent(pastingEventArgs);
if (pastingEventArgs.CommandCancelled)
{
return;
}
string text = GetTextToPaste(pastingEventArgs, textArea);
if (string.IsNullOrEmpty(text))
{
return;
}
dataObject = pastingEventArgs.DataObject;
bool fullLine = textArea.Options.CutCopyWholeLine && dataObject.GetDataPresent(LineSelectedType);
bool rectangular = dataObject.GetDataPresent(RectangleSelection.RectangularSelectionDataType);
bool isTextPasted = false;
if (fullLine)
{
DocumentLine currentLine = textArea.Document.GetLineByNumber(textArea.Caret.Line);
if (textArea.ReadOnlySectionProvider.CanInsert(currentLine.Offset))
{
textArea.Document.Insert(currentLine.Offset, text);
isTextPasted = true;
}
}
else if (rectangular && textArea.Selection.IsEmpty && !(textArea.Selection is RectangleSelection))
{
if (!RectangleSelection.PerformRectangularPaste(textArea, textArea.Caret.Position, text, false))
{
textArea.ReplaceSelectionWithText(text);
isTextPasted = true;
}
}
else
{
textArea.ReplaceSelectionWithText(text);
isTextPasted = true;
}
if (isTextPasted)
{
textArea.Caret.BringCaretToView();
textArea.OnTextPasted(new TextEventArgs(text));
}
args.Handled = true;
}
}
