/// <summary>
/// Creates a data object containing the selection's text.
/// </summary>
public virtual DataObject CreateDataObject(TextArea textArea)
{
DataObject data = new DataObject();
// Ensure we use the appropriate newline sequence for the OS
string text = TextUtilities.NormalizeNewLines(GetText(), Environment.NewLine);
// Enable drag/drop to Word, Notepad++ and others
if (EditingCommandHandler.ConfirmDataFormat(textArea, data, DataFormats.UnicodeText))
{
data.SetText(text);
}
// Enable drag/drop to SciTe:
// We cannot use SetText, thus we need to use typeof(string).FullName as data format.
// new DataObject(object) calls SetData(object), which in turn calls SetData(Type, data),
// which then uses Type.FullName as format.
// We immitate that behavior here as well:
if (EditingCommandHandler.ConfirmDataFormat(textArea, data, typeof(string).FullName))
{
data.SetData(typeof(string).FullName, text);
}
// Also copy text in HTML format to clipboard - good for pasting text into Word
// or to the SharpDevelop forums.
if (EditingCommandHandler.ConfirmDataFormat(textArea, data, DataFormats.Html))
{
HtmlClipboard.SetHtml(data, CreateHtmlFragment(new HtmlOptions(textArea.Options)));
}
return(data);
}
private void textArea_Drop(object sender, DragEventArgs e)
{
try
{
DragDropEffects effect = GetEffect(e);
e.Effects = effect;
if (effect != DragDropEffects.None)
{
int start = textArea.Caret.Offset;
if (mode == SelectionMode.Drag && textArea.Selection.Contains(start))
{
Debug.WriteLine("Drop: did not drop: drop target is inside selection");
e.Effects = DragDropEffects.None;
}
else
{
Debug.WriteLine("Drop: insert at " + start);
var pastingEventArgs = new DataObjectPastingEventArgs(e.Data, true, DataFormats.UnicodeText);
textArea.RaiseEvent(pastingEventArgs);
if (pastingEventArgs.CommandCancelled)
{
return;
}
string text = EditingCommandHandler.GetTextToPaste(pastingEventArgs, textArea);
if (text == null)
{
return;
}
bool rectangular = pastingEventArgs.DataObject.GetDataPresent(RectangleSelection.RectangularSelectionDataType);
// Mark the undo group with the currentDragDescriptor, if the drag
// is originating from the same control. This allows combining
// the undo groups when text is moved.
textArea.Document.UndoStack.StartUndoGroup(this.currentDragDescriptor);
try
{
if (rectangular && RectangleSelection.PerformRectangularPaste(textArea, textArea.Caret.Position, text, true))
{
}
else
{
textArea.Document.Insert(start, text);
textArea.Selection = Selection.Create(textArea, start, start + text.Length);
}
}
finally
{
textArea.Document.UndoStack.EndUndoGroup();
}
}
e.Handled = true;
}
}
catch (Exception ex)
{
OnDragException(ex);
}
}
/// <summary>
/// Creates a new TextAreaDefaultInputHandler instance.
/// </summary>
public TextAreaDefaultInputHandler(TextArea textArea) : base(textArea)
{
this.NestedInputHandlers.Add(CaretNavigation = CaretNavigationCommandHandler.Create(textArea));
this.NestedInputHandlers.Add(Editing = EditingCommandHandler.Create(textArea));
this.NestedInputHandlers.Add(MouseSelection = new SelectionMouseHandler(textArea));
this.CommandBindings.Add(new CommandBinding(ApplicationCommands.Undo, ExecuteUndo, CanExecuteUndo));
this.CommandBindings.Add(new CommandBinding(ApplicationCommands.Redo, ExecuteRedo, CanExecuteRedo));
}
/// <inheritdoc/>
public override System.Windows.DataObject CreateDataObject(TextArea textArea)
{
var data = base.CreateDataObject(textArea);
if (EditingCommandHandler.ConfirmDataFormat(textArea, data, RectangularSelectionDataType))
{
MemoryStream isRectangle = new MemoryStream(1);
isRectangle.WriteByte(1);
data.SetData(RectangularSelectionDataType, isRectangle, false);
}
return(data);
}