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);
}
}
const string LineSelectedType = "MSDEVLineSelect"; // This is the type VS 2003 and 2005 use for flagging a whole line copy
public static bool ConfirmDataFormat(TextArea textArea, DataObject dataObject, string format)
{
var e = new DataObjectSettingDataEventArgs(dataObject, format);
textArea.RaiseEvent(e);
return(!e.CommandCancelled);
}
static bool CopySelectedText(TextArea textArea)
{
var data = textArea.Selection.CreateDataObject(textArea);
var copyingEventArgs = new DataObjectCopyingEventArgs(data, false);
textArea.RaiseEvent(copyingEventArgs);
if (copyingEventArgs.CommandCancelled)
{
return(false);
}
try {
Clipboard.SetDataObject(data, true);
} catch (ExternalException) {
// Apparently this exception sometimes happens randomly.
// The MS controls just ignore it, so we'll do the same.
return(false);
}
string text = textArea.Selection.GetText();
text = TextUtilities.NormalizeNewLines(text, Environment.NewLine);
textArea.OnTextCopied(new TextEventArgs(text));
return(true);
}
private 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))
{
dataObject = pastingEventArgs.DataObject;
bool fullLine = textArea.Options.CutCopyWholeLine && dataObject.GetDataPresent(LineSelectedType);
bool rectangular = dataObject.GetDataPresent(RectangleSelection.RectangularSelectionDataType);
if (fullLine)
{
DocumentLine currentLine = textArea.Document.GetLineByNumber(textArea.Caret.Line);
if (textArea.ReadOnlySectionProvider.CanInsert(currentLine.Offset))
{
textArea.Document.Insert(currentLine.Offset, text);
}
}
else if (rectangular && textArea.Selection.IsEmpty && !(textArea.Selection is RectangleSelection))
{
if (!RectangleSelection.PerformRectangularPaste(textArea, textArea.Caret.Position, text, false))
{
textArea.ReplaceSelectionWithText(text);
}
}
else
{
textArea.ReplaceSelectionWithText(text);
}
}
textArea.Caret.BringCaretToView();
args.Handled = true;
}
}
private static bool CopyWholeLine(TextArea textArea, DocumentLine line)
{
ISegment wholeLine = new SimpleSegment(line.Offset, line.TotalLength);
string text = textArea.Document.GetText(wholeLine);
// Ensure we use the appropriate newline sequence for the OS
text = TextUtilities.NormalizeNewLines(text, Environment.NewLine);
DataObject data = new DataObject();
if (ConfirmDataFormat(textArea, data, DataFormats.UnicodeText))
{
data.SetText(text);
}
// Also copy text in HTML format to clipboard - good for pasting text into Word
// or to the SharpDevelop forums.
if (ConfirmDataFormat(textArea, data, DataFormats.Html))
{
IHighlighter highlighter = textArea.GetService(typeof(IHighlighter)) as IHighlighter;
HtmlClipboard.SetHtml(data, HtmlClipboard.CreateHtmlFragment(textArea.Document, highlighter, wholeLine, new HtmlOptions(textArea.Options)));
}
if (ConfirmDataFormat(textArea, data, LineSelectedType))
{
MemoryStream lineSelected = new MemoryStream(1);
lineSelected.WriteByte(1);
data.SetData(LineSelectedType, lineSelected, false);
}
var copyingEventArgs = new DataObjectCopyingEventArgs(data, false);
textArea.RaiseEvent(copyingEventArgs);
if (copyingEventArgs.CommandCancelled)
{
return(false);
}
try
{
Clipboard.SetDataObject(data, true);
}
catch (ExternalException)
{
// Apparently this exception sometimes happens randomly.
// The MS controls just ignore it, so we'll do the same.
return(false);
}
textArea.OnTextCopied(new TextEventArgs(text));
return(true);
}
void textArea_Drop(object sender, DragEventArgs e)
{
try {
DragDropEffects effect = GetEffect(e);
e.Effects = effect;
if (effect != DragDropEffects.None)
{
string text = e.Data.GetData(DataFormats.UnicodeText, true) as string;
if (text != null)
{
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);
bool rectangular = e.Data.GetDataPresent(RectangleSelection.RectangularSelectionDataType);
string newLine = TextUtilities.GetNewLineFromDocument(textArea.Document, textArea.Caret.Line);
text = TextUtilities.NormalizeNewLines(text, newLine);
string pasteFormat;
// fill the suggested DataFormat used for the paste action:
if (rectangular)
{
pasteFormat = RectangleSelection.RectangularSelectionDataType;
}
else
{
pasteFormat = DataFormats.UnicodeText;
}
var pastingEventArgs = new DataObjectPastingEventArgs(e.Data, true, pasteFormat);
textArea.RaiseEvent(pastingEventArgs);
if (pastingEventArgs.CommandCancelled)
{
return;
}
// DataObject.PastingEvent handlers might have changed the format to apply.
rectangular = pastingEventArgs.FormatToApply == 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);
}
}
static bool CopyWholeLine(TextArea textArea, DocumentLine line)
{
ISegment wholeLine = new SimpleSegment(line.Offset, line.TotalLength);
string text = textArea.Document.GetText(wholeLine);
// Ensure we use the appropriate newline sequence for the OS
text = TextUtilities.NormalizeNewLines(text, Environment.NewLine);
DataObject data = new DataObject();
if (ConfirmDataFormat(textArea, data, DataFormats.UnicodeText))
data.SetText(text);
// Also copy text in HTML format to clipboard - good for pasting text into Word
// or to the SharpDevelop forums.
if (ConfirmDataFormat(textArea, data, DataFormats.Html)) {
IHighlighter highlighter = textArea.GetService(typeof(IHighlighter)) as IHighlighter;
HtmlClipboard.SetHtml(data, HtmlClipboard.CreateHtmlFragment(textArea.Document, highlighter, wholeLine, new HtmlOptions(textArea.Options)));
}
if (ConfirmDataFormat(textArea, data, LineSelectedType)) {
MemoryStream lineSelected = new MemoryStream(1);
lineSelected.WriteByte(1);
data.SetData(LineSelectedType, lineSelected, false);
}
var copyingEventArgs = new DataObjectCopyingEventArgs(data, false);
textArea.RaiseEvent(copyingEventArgs);
if (copyingEventArgs.CommandCancelled)
return false;
try {
Clipboard.SetDataObject(data, true);
} catch (ExternalException) {
// Apparently this exception sometimes happens randomly.
// The MS controls just ignore it, so we'll do the same.
return false;
}
textArea.OnTextCopied(new TextEventArgs(text));
return true;
}
const string LineSelectedType = "MSDEVLineSelect"; // This is the type VS 2003 and 2005 use for flagging a whole line copy
public static bool ConfirmDataFormat(TextArea textArea, DataObject dataObject, string format)
{
var e = new DataObjectSettingDataEventArgs(dataObject, format);
textArea.RaiseEvent(e);
return !e.CommandCancelled;
}
static bool CopySelectedText(TextArea textArea)
{
var data = textArea.Selection.CreateDataObject(textArea);
var copyingEventArgs = new DataObjectCopyingEventArgs(data, false);
textArea.RaiseEvent(copyingEventArgs);
if (copyingEventArgs.CommandCancelled)
return false;
try {
Clipboard.SetDataObject(data, true);
} catch (ExternalException) {
// Apparently this exception sometimes happens randomly.
// The MS controls just ignore it, so we'll do the same.
}
string text = textArea.Selection.GetText();
text = TextUtilities.NormalizeNewLines(text, Environment.NewLine);
textArea.OnTextCopied(new TextEventArgs(text));
return true;
}
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;
}
Debug.WriteLine(dataObject.GetData(DataFormats.Html) as string);
// convert text back to correct newlines for this document
string newLine = TextUtilities.GetNewLineFromDocument(textArea.Document, textArea.Caret.Line);
string text;
try {
text = (string)dataObject.GetData(DataFormats.UnicodeText);
text = TextUtilities.NormalizeNewLines(text, newLine);
} catch (OutOfMemoryException) {
return;
}
if (!string.IsNullOrEmpty(text))
{
bool fullLine = textArea.Options.CutCopyWholeLine && dataObject.GetDataPresent(LineSelectedType);
bool rectangular = dataObject.GetDataPresent(RectangleSelection.RectangularSelectionDataType);
string pasteFormat;
// fill the suggested DataFormat used for the paste action:
if (fullLine)
{
pasteFormat = LineSelectedType;
}
else if (rectangular && textArea.Selection.IsEmpty && !(textArea.Selection is RectangleSelection))
{
pasteFormat = RectangleSelection.RectangularSelectionDataType;
}
else
{
pasteFormat = DataFormats.UnicodeText;
}
var pastingEventArgs = new DataObjectPastingEventArgs(dataObject, false, pasteFormat);
textArea.RaiseEvent(pastingEventArgs);
if (pastingEventArgs.CommandCancelled)
{
return;
}
// DataObject.PastingEvent handlers might have changed the format to apply.
pasteFormat = pastingEventArgs.FormatToApply;
fullLine = pasteFormat == LineSelectedType;
rectangular = pasteFormat == RectangleSelection.RectangularSelectionDataType;
if (fullLine)
{
DocumentLine currentLine = textArea.Document.GetLineByNumber(textArea.Caret.Line);
if (textArea.ReadOnlySectionProvider.CanInsert(currentLine.Offset))
{
textArea.Document.Insert(currentLine.Offset, text);
}
}
else if (rectangular && textArea.Selection.IsEmpty && !(textArea.Selection is RectangleSelection))
{
if (!RectangleSelection.PerformRectangularPaste(textArea, textArea.Caret.Position, text, false))
{
textArea.ReplaceSelectionWithText(text);
}
}
else
{
textArea.ReplaceSelectionWithText(text);
}
}
textArea.Caret.BringCaretToView();
args.Handled = true;
}
}
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;
}
dataObject = pastingEventArgs.DataObject;
if (dataObject == null)
{
return;
}
// convert text back to correct newlines for this document
string newLine = TextUtilities.GetNewLineFromDocument(textArea.Document, textArea.Caret.Line);
string text;
try {
// Try retrieving the text as one of:
// - the FormatToApply
// - UnicodeText
// - Text
// (but don't try the same format twice)
if (pastingEventArgs.FormatToApply != null && dataObject.GetDataPresent(pastingEventArgs.FormatToApply))
{
text = (string)dataObject.GetData(pastingEventArgs.FormatToApply);
}
else if (pastingEventArgs.FormatToApply != DataFormats.UnicodeText && dataObject.GetDataPresent(DataFormats.UnicodeText))
{
text = (string)dataObject.GetData(DataFormats.UnicodeText);
}
else if (pastingEventArgs.FormatToApply != DataFormats.Text && dataObject.GetDataPresent(DataFormats.Text))
{
text = (string)dataObject.GetData(DataFormats.Text);
}
else
{
return; // no text data format
}
text = TextUtilities.NormalizeNewLines(text, newLine);
} catch (OutOfMemoryException) {
// may happen when trying to paste a huge string
return;
}
if (!string.IsNullOrEmpty(text))
{
bool fullLine = textArea.Options.CutCopyWholeLine && dataObject.GetDataPresent(LineSelectedType);
bool rectangular = dataObject.GetDataPresent(RectangleSelection.RectangularSelectionDataType);
if (fullLine)
{
DocumentLine currentLine = textArea.Document.GetLineByNumber(textArea.Caret.Line);
if (textArea.ReadOnlySectionProvider.CanInsert(currentLine.Offset))
{
textArea.Document.Insert(currentLine.Offset, text);
}
}
else if (rectangular && textArea.Selection.IsEmpty && !(textArea.Selection is RectangleSelection))
{
if (!RectangleSelection.PerformRectangularPaste(textArea, textArea.Caret.Position, text, false))
{
textArea.ReplaceSelectionWithText(text);
}
}
else
{
textArea.ReplaceSelectionWithText(text);
}
}
textArea.Caret.BringCaretToView();
args.Handled = true;
}
}
