void PositionChanged_ITextCaret(CaretLocationEventArgs args)
{
//Some unit tests don't initialize full UI representation of MonoTextEditor
//which means they don't depend on ITextCaret implementation, so we can return here
//If something is using MonoTextEditor directly(e.g. DiffView) and is not initializing ITextView
//TextBuffer is null, in that case don't depend on ITextCaret implementation, so we can return here
if (TextEditor?.TextBuffer == null)
{
return;
}
// MD doesn't fire textEditor.CaretPositionChanged until after the command has gone completely through the command chain.
// Too much VS stuff depends on it getting updated earlier, so we'll use this event which fires earlier.
int position = TextEditor.Caret.Offset;
VirtualSnapshotPoint vsp = new VirtualSnapshotPoint(TextEditor.TextSnapshot, position);
insertionPoint = vsp;
if (args.CaretChangeReason == CaretChangeReason.Movement)
{
oldCaretLocation = args.Location;
var oldOffset = TextEditor.LocationToOffset(args.Location);
var snapshotPoint = new SnapshotPoint(TextEditor.TextSnapshot, oldOffset);
var mappingPoint = TextEditor.BufferGraph.CreateMappingPoint(snapshotPoint, PointTrackingMode.Positive);
var oldCaretPosition = new CaretPosition(vsp, mappingPoint, _caretAffinity);
var eventArgs = new CaretPositionChangedEventArgs(TextEditor, oldCaretPosition, ((ITextCaret)this).Position);
ITextCaret_PositionChanged?.Invoke(this, eventArgs);
}
}
void PositionChanged_ITextCaret(CaretLocationEventArgs args)
{
//Some unit tests don't initialize full UI representation of MonoTextEditor
//which means they don't depend on ITextCaret implementation, so we can return here
//If something is using MonoTextEditor directly(e.g. DiffView) and is not initializing ITextView
//TextBuffer is null, in that case don't depend on ITextCaret implementation, so we can return here
if (TextEditor?.TextBuffer == null)
{
return;
}
// MD doesn't fire textEditor.CaretPositionChanged until after the command has gone completely through the command chain.
// Too much VS stuff depends on it getting updated earlier, so we'll use this event which fires earlier.
int position = TextEditor.Caret.Offset;
VirtualSnapshotPoint vsp = new VirtualSnapshotPoint(TextEditor.TextSnapshot, position);
insertionPoint = vsp;
if (args.CaretChangeReason == CaretChangeReason.Movement)
{
oldCaretLocation = args.Location;
var snapShot = args.Snapshot;
var snapshotLine = snapShot.GetLineFromLineNumber(args.Location.Line - 1);
if (snapshotLine == null)
{
LoggingService.LogError("PositionChanged_ITextCaret line number : " + args.Location.Line + " is out of range.");
return;
}
var oldOffset = snapshotLine.Start.Position + Math.Min(snapshotLine.Length, args.Location.Column - 1);
var snapshotPoint = new SnapshotPoint(snapShot, oldOffset);
var mappingPoint = TextEditor.BufferGraph.CreateMappingPoint(snapshotPoint, PointTrackingMode.Positive);
var oldCaretPosition = new CaretPosition(vsp, mappingPoint, _caretAffinity);
var eventArgs = new CaretPositionChangedEventArgs(TextEditor, oldCaretPosition, ((ITextCaret)this).Position);
ITextCaret_PositionChanged?.Invoke(this, eventArgs);
}
// Synchronize the MultiSelectionBroker with Caret.
// In VS Editor 15.8 the MultiSelectionBroker is the single source of truth about carets and selections
// (no selection / single caret, no selection / multiple carets, simple selection, block selection, multiple selections).
// In our world, we still have our own Caret and Selection, so when our Caret moves, we need to synchronize
// the MultiSelectionBroker to our values, and when the MultiSelectionBroker changes
// (e.g. as a result of EditorOperations such as InsertNewLine), we need to synchronize our caret and selection
// to the MultiSelectionBroker values.
// Note that EditorOperations only updates the MultiSelectionBroker, it no longer moves caret or selection
// (since in Editor 15.8 the Caret and Selection are shims implemented in terms of MultiSelectionBroker)
// TODO: synchronize all our selections as well.
TextEditorData.Parent.MultiSelectionBroker.PerformActionOnAllSelections(transformer => {
transformer.MoveTo(vsp, select: false, PositionAffinity.Successor);
});
}