void textArea_DocumentChanged(object sender, EventArgs e)
{
if (mode != MouseSelectionMode.None)
{
mode = MouseSelectionMode.None;
textArea.ReleaseMouseCapture();
}
startWord = null;
}
void ITextAreaInputHandler.Detach()
{
mode = MouseSelectionMode.None;
textArea.MouseLeftButtonDown -= textArea_MouseLeftButtonDown;
textArea.MouseMove -= textArea_MouseMove;
textArea.MouseLeftButtonUp -= textArea_MouseLeftButtonUp;
textArea.QueryCursor -= textArea_QueryCursor;
textArea.OptionChanged -= textArea_OptionChanged;
if (enableTextDragDrop)
{
DetachDragDrop();
}
}
void ITextAreaInputHandler.Detach()
{
mode = MouseSelectionMode.None;
textArea.MouseLeftButtonDown -= textArea_MouseLeftButtonDown;
textArea.MouseDown -= textArea_MouseMiddleButtonDown;
textArea.MouseMove -= textArea_MouseMove;
textArea.MouseLeftButtonUp -= textArea_MouseLeftButtonUp;
textArea.MouseUp -= textArea_MouseMiddleButtonUp; // there is no event for middle button up
textArea.QueryCursor -= textArea_QueryCursor;
textArea.DocumentChanged -= textArea_DocumentChanged;
textArea.OptionChanged -= textArea_OptionChanged;
if (enableTextDragDrop)
{
DetachDragDrop();
}
}
void textArea_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (mode == MouseSelectionMode.None || e.Handled)
{
return;
}
e.Handled = true;
if (mode == MouseSelectionMode.PossibleDragStart)
{
// -> this was not a drag start (mouse didn't move after mousedown)
SetCaretOffsetToMousePosition(e);
textArea.ClearSelection();
}
else if (mode == MouseSelectionMode.Normal || mode == MouseSelectionMode.WholeWord || mode == MouseSelectionMode.WholeLine || mode == MouseSelectionMode.Rectangular)
{
ExtendSelectionToMouse(e);
}
mode = MouseSelectionMode.None;
textArea.ReleaseMouseCapture();
}
protected internal override void MousePressed (MarginMouseEventArgs args)
{
base.MousePressed (args);
if (args.TriggersContextMenu ())
return;
InSelectionDrag = false;
inDrag = false;
Selection selection = textEditor.MainSelection;
int oldOffset = textEditor.Caret.Offset;
string link = GetLink != null ? GetLink (args) : null;
if (!String.IsNullOrEmpty (link)) {
textEditor.FireLinkEvent (link, args.Button, args.ModifierState);
return;
}
if (args.Button == 1) {
if (!CalculateClickLocation (args.X, args.Y, out clickLocation))
return;
DocumentLine line = Document.GetLine (clickLocation.Line);
bool isHandled = false;
if (line != null) {
foreach (TextLineMarker marker in line.Markers) {
if (marker is IActionTextLineMarker) {
isHandled |= ((IActionTextLineMarker)marker).MousePressed (textEditor, args);
if (isHandled)
break;
}
}
foreach (var marker in Document.GetTextSegmentMarkersAt (line).Where (m => m.IsVisible)) {
if (marker is IActionTextLineMarker) {
isHandled |= ((IActionTextLineMarker)marker).MousePressed (textEditor, args);
if (isHandled)
break;
}
}
}
if (isHandled)
return;
int offset = Document.LocationToOffset (clickLocation);
if (offset < 0) {
textEditor.RunAction (CaretMoveActions.ToDocumentEnd);
return;
}
if (args.Button == 2 && !selection.IsEmpty && selection.Contains (Document.OffsetToLocation (offset))) {
textEditor.ClearSelection ();
return;
}
if (args.Type == EventType.TwoButtonPress) {
var data = textEditor.GetTextEditorData ();
mouseWordStart = data.FindCurrentWordStart (offset);
mouseWordEnd = data.FindCurrentWordEnd (offset);
Caret.Offset = mouseWordEnd;
textEditor.MainSelection = new Selection (textEditor.Document.OffsetToLocation (mouseWordStart), textEditor.Document.OffsetToLocation (mouseWordEnd));
InSelectionDrag = true;
mouseSelectionMode = MouseSelectionMode.Word;
// folding marker
int lineNr = args.LineNumber;
foreach (var shownFolding in GetFoldRectangles (lineNr)) {
if (shownFolding.Item1.Contains ((int)(args.X + this.XOffset), (int)args.Y)) {
shownFolding.Item2.IsFolded = false;
return;
}
}
return;
} else if (args.Type == EventType.ThreeButtonPress) {
int lineNr = Document.OffsetToLineNumber (offset);
textEditor.SetSelectLines (lineNr, lineNr);
var range = textEditor.SelectionRange;
mouseWordStart = range.Offset;
mouseWordEnd = range.EndOffset;
InSelectionDrag = true;
mouseSelectionMode = MouseSelectionMode.WholeLine;
return;
}
mouseSelectionMode = MouseSelectionMode.SingleChar;
if (textEditor.IsSomethingSelected && textEditor.SelectionRange.Offset <= offset && offset < textEditor.SelectionRange.EndOffset && clickLocation != textEditor.Caret.Location) {
inDrag = true;
} else {
if ((args.ModifierState & Gdk.ModifierType.ShiftMask) == ModifierType.ShiftMask) {
InSelectionDrag = true;
Caret.PreserveSelection = true;
if (!textEditor.IsSomethingSelected) {
textEditor.MainSelection = new Selection (Caret.Location, clickLocation);
Caret.Location = clickLocation;
} else {
Caret.Location = clickLocation;
textEditor.ExtendSelectionTo (clickLocation);
}
Caret.PreserveSelection = false;
} else {
textEditor.ClearSelection ();
Caret.Location = clickLocation;
InSelectionDrag = true;
textEditor.SetSelection (clickLocation, clickLocation);
}
textEditor.RequestResetCaretBlink ();
}
}
DocumentLocation docLocation = PointToLocation (args.X, args.Y);
if (docLocation.Line < DocumentLocation.MinLine || docLocation.Column < DocumentLocation.MinColumn)
return;
// disable middle click on windows.
if (!Platform.IsWindows && args.Button == 2 && this.textEditor.CanEdit (docLocation.Line)) {
TextSegment selectionRange = TextSegment.Invalid;
int offset = Document.LocationToOffset (docLocation);
if (!selection.IsEmpty)
selectionRange = selection.GetSelectionRange (this.textEditor.GetTextEditorData ());
var oldVersion = textEditor.Document.Version;
bool autoScroll = textEditor.Caret.AutoScrollToCaret;
textEditor.Caret.AutoScrollToCaret = false;
if (!selection.IsEmpty && selectionRange.Contains (offset)) {
textEditor.ClearSelection ();
textEditor.Caret.Offset = selectionRange.EndOffset;
return;
}
ClipboardActions.PasteFromPrimary (textEditor.GetTextEditorData (), offset);
textEditor.Caret.Offset = oldOffset;
if (!selectionRange.IsInvalid)
textEditor.SelectionRange = new TextSegment (oldVersion.MoveOffsetTo (Document.Version, selectionRange.Offset), selectionRange.Length);
if (autoScroll)
textEditor.Caret.ActivateAutoScrollWithoutMove ();
}
}
protected internal override void MousePressed (MarginMouseEventArgs args)
{
base.MousePressed (args);
if (args.TriggersContextMenu ())
return;
inSelectionDrag = false;
inDrag = false;
Selection selection = textEditor.MainSelection;
int anchor = selection != null ? selection.GetAnchorOffset (this.textEditor.GetTextEditorData ()) : -1;
int oldOffset = textEditor.Caret.Offset;
string link = GetLink != null ? GetLink (args) : null;
if (!String.IsNullOrEmpty (link)) {
textEditor.FireLinkEvent (link, args.Button, args.ModifierState);
return;
}
if (args.Button == 1) {
VisualLocationTranslator trans = new VisualLocationTranslator (this);
clickLocation = trans.PointToLocation (args.X, args.Y);
if (clickLocation.Line < DocumentLocation.MinLine || clickLocation.Column < DocumentLocation.MinColumn)
return;
LineSegment line = Document.GetLine (clickLocation.Line);
bool isHandled = false;
if (line != null) {
foreach (TextMarker marker in line.Markers) {
if (marker is IActionTextMarker) {
isHandled |= ((IActionTextMarker)marker).MousePressed (this.textEditor, args);
if (isHandled)
break;
}
}
}
if (isHandled)
return;
if (line != null && clickLocation.Column >= line.Length + 1 && GetWidth (Document.GetTextAt (line.SegmentIncludingDelimiter) + "-") < args.X) {
clickLocation = new DocumentLocation (clickLocation.Line, line.Length + 1);
if (textEditor.GetTextEditorData ().HasIndentationTracker && textEditor.Options.IndentStyle == IndentStyle.Virtual) {
int indentationColumn = this.textEditor.GetTextEditorData ().GetVirtualIndentationColumn (clickLocation);
if (indentationColumn > clickLocation.Column)
clickLocation = new DocumentLocation (clickLocation.Line, indentationColumn);
}
}
int offset = Document.LocationToOffset (clickLocation);
if (offset < 0) {
textEditor.RunAction (CaretMoveActions.ToDocumentEnd);
return;
}
if (args.Button == 2 && selection != null && selection.Contains (Document.OffsetToLocation (offset))) {
textEditor.ClearSelection ();
return;
}
if (args.Type == EventType.TwoButtonPress) {
var data = textEditor.GetTextEditorData ();
mouseWordStart = data.FindCurrentWordStart (offset);
mouseWordEnd = data.FindCurrentWordEnd (offset);
Caret.Offset = mouseWordEnd;
textEditor.MainSelection = new Selection (textEditor.Document.OffsetToLocation (mouseWordStart), textEditor.Document.OffsetToLocation (mouseWordEnd));
inSelectionDrag = true;
mouseSelectionMode = MouseSelectionMode.Word;
return;
} else if (args.Type == EventType.ThreeButtonPress) {
int lineNr = Document.OffsetToLineNumber (offset);
textEditor.SetSelectLines (lineNr, lineNr);
inSelectionDrag = true;
mouseSelectionMode = MouseSelectionMode.WholeLine;
return;
}
mouseSelectionMode = MouseSelectionMode.SingleChar;
if (textEditor.IsSomethingSelected && textEditor.SelectionRange.Offset <= offset && offset < textEditor.SelectionRange.EndOffset && clickLocation != textEditor.Caret.Location) {
inDrag = true;
} else {
if ((args.ModifierState & Gdk.ModifierType.ShiftMask) == ModifierType.ShiftMask) {
inSelectionDrag = true;
Caret.PreserveSelection = true;
if (!textEditor.IsSomethingSelected) {
textEditor.MainSelection = new Selection (Caret.Location, clickLocation);
Caret.Location = clickLocation;
} else {
Caret.Location = clickLocation;
textEditor.ExtendSelectionTo (clickLocation);
}
Caret.PreserveSelection = false;
} else {
inSelectionDrag = false;
textEditor.ClearSelection ();
Caret.Location = clickLocation;
}
textEditor.RequestResetCaretBlink ();
}
}
DocumentLocation docLocation = PointToLocation (args.X, args.Y);
if (docLocation.Line < DocumentLocation.MinLine || docLocation.Column < DocumentLocation.MinColumn)
return;
// disable middle click on windows.
if (!Platform.IsWindows && args.Button == 2 && this.textEditor.CanEdit (docLocation.Line)) {
TextSegment selectionRange = TextSegment.Invalid;
int offset = Document.LocationToOffset (docLocation);
if (selection != null)
selectionRange = selection.GetSelectionRange (this.textEditor.GetTextEditorData ());
bool autoScroll = textEditor.Caret.AutoScrollToCaret;
textEditor.Caret.AutoScrollToCaret = false;
int length = ClipboardActions.PasteFromPrimary (textEditor.GetTextEditorData (), offset);
textEditor.Caret.Offset = oldOffset;
if (selection != null) {
if (offset < selectionRange.EndOffset) {
oldOffset += length;
anchor += length;
selection = new Selection (Document.OffsetToLocation (selectionRange.Offset + length),
Document.OffsetToLocation (selectionRange.Offset + length + selectionRange.Length));
}
textEditor.MainSelection = selection;
}
if (autoScroll)
textEditor.Caret.ActivateAutoScrollWithoutMove ();
}
}
void textArea_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
mode = MouseSelectionMode.None;
if (!e.Handled && e.ChangedButton == MouseButton.Left)
{
ModifierKeys modifiers = Keyboard.Modifiers;
bool shift = (modifiers & ModifierKeys.Shift) == ModifierKeys.Shift;
if (enableTextDragDrop && e.ClickCount == 1 && !shift)
{
int visualColumn;
bool isAtEndOfLine;
int offset = GetOffsetFromMousePosition(e, out visualColumn, out isAtEndOfLine);
if (textArea.Selection.Contains(offset))
{
if (textArea.CaptureMouse())
{
mode = MouseSelectionMode.PossibleDragStart;
possibleDragStartMousePos = e.GetPosition(textArea);
}
e.Handled = true;
return;
}
}
var oldPosition = textArea.Caret.Position;
SetCaretOffsetToMousePosition(e);
if (!shift)
{
textArea.ClearSelection();
}
if (textArea.CaptureMouse())
{
if ((modifiers & ModifierKeys.Alt) == ModifierKeys.Alt && textArea.Options.EnableRectangularSelection)
{
mode = MouseSelectionMode.Rectangular;
if (shift && textArea.Selection is RectangleSelection)
{
textArea.Selection = textArea.Selection.StartSelectionOrSetEndpoint(oldPosition, textArea.Caret.Position);
}
}
else if (e.ClickCount == 1 && ((modifiers & ModifierKeys.Control) == 0))
{
mode = MouseSelectionMode.Normal;
if (shift && !(textArea.Selection is RectangleSelection))
{
textArea.Selection = textArea.Selection.StartSelectionOrSetEndpoint(oldPosition, textArea.Caret.Position);
}
}
else
{
SimpleSegment startWord;
if (e.ClickCount == 3)
{
mode = MouseSelectionMode.WholeLine;
startWord = GetLineAtMousePosition(e);
}
else
{
mode = MouseSelectionMode.WholeWord;
startWord = GetWordAtMousePosition(e);
}
if (startWord == SimpleSegment.Invalid)
{
mode = MouseSelectionMode.None;
textArea.ReleaseMouseCapture();
return;
}
if (shift && !textArea.Selection.IsEmpty)
{
if (startWord.Offset < textArea.Selection.SurroundingSegment.Offset)
{
textArea.Selection = textArea.Selection.SetEndpoint(new TextViewPosition(textArea.Document.GetLocation(startWord.Offset)));
}
else if (startWord.EndOffset > textArea.Selection.SurroundingSegment.EndOffset)
{
textArea.Selection = textArea.Selection.SetEndpoint(new TextViewPosition(textArea.Document.GetLocation(startWord.EndOffset)));
}
this.startWord = new AnchorSegment(textArea.Document, textArea.Selection.SurroundingSegment);
}
else
{
textArea.Selection = Selection.Create(textArea, startWord.Offset, startWord.EndOffset);
this.startWord = new AnchorSegment(textArea.Document, startWord.Offset, startWord.Length);
}
}
}
}
e.Handled = true;
}
void StartDrag()
{
// prevent nested StartDrag calls
mode = MouseSelectionMode.Drag;
// mouse capture and Drag'n'Drop doesn't mix
textArea.ReleaseMouseCapture();
DataObject dataObject = textArea.Selection.CreateDataObject(textArea);
DragDropEffects allowedEffects = DragDropEffects.All;
var deleteOnMove = textArea.Selection.Segments.Select(s => new AnchorSegment(textArea.Document, s)).ToList();
foreach (ISegment s in deleteOnMove)
{
ISegment[] result = textArea.GetDeletableSegments(s);
if (result.Length != 1 || result[0].Offset != s.Offset || result[0].EndOffset != s.EndOffset)
{
allowedEffects &= ~DragDropEffects.Move;
}
}
var copyingEventArgs = new DataObjectCopyingEventArgs(dataObject, true);
textArea.RaiseEvent(copyingEventArgs);
if (copyingEventArgs.CommandCancelled)
{
return;
}
object dragDescriptor = new object();
this.currentDragDescriptor = dragDescriptor;
DragDropEffects resultEffect;
using (textArea.AllowCaretOutsideSelection()) {
var oldCaretPosition = textArea.Caret.Position;
try {
Debug.WriteLine("DoDragDrop with allowedEffects=" + allowedEffects);
resultEffect = DragDrop.DoDragDrop(textArea, dataObject, allowedEffects);
Debug.WriteLine("DoDragDrop done, resultEffect=" + resultEffect);
} catch (COMException ex) {
// ignore COM errors - don't crash on badly implemented drop targets
Debug.WriteLine("DoDragDrop failed: " + ex.ToString());
return;
}
if (resultEffect == DragDropEffects.None)
{
// reset caret if drag was aborted
textArea.Caret.Position = oldCaretPosition;
}
}
this.currentDragDescriptor = null;
if (deleteOnMove != null && resultEffect == DragDropEffects.Move && (allowedEffects & DragDropEffects.Move) == DragDropEffects.Move)
{
bool draggedInsideSingleDocument = (dragDescriptor == textArea.Document.UndoStack.LastGroupDescriptor);
if (draggedInsideSingleDocument)
{
textArea.Document.UndoStack.StartContinuedUndoGroup(null);
}
textArea.Document.BeginUpdate();
try {
foreach (ISegment s in deleteOnMove)
{
textArea.Document.Remove(s.Offset, s.Length);
}
} finally {
textArea.Document.EndUpdate();
if (draggedInsideSingleDocument)
{
textArea.Document.UndoStack.EndUndoGroup();
}
}
}
}
