/// <summary>
/// Undo the latest change.
/// </summary>
public void Undo()
{
root.Undo();
}
public void MoveTrackSegmentTest(int preTestFrameNumber, int preTestTrackIndex, int segmentViewModelIndex, bool isSelectedSegmentPreMove, int newTrackNumber, int newStartFrame)
{
SetupViewModel(useRealUndoService: true);
IScriptVideoContext svc = _scriptVideoContextMock.Object;
if (svc.FrameNumber != preTestFrameNumber)
{
svc.FrameNumber = preTestFrameNumber;
}
_viewModel.SelectedTrack = _viewModel.TimelineTrackCollection[preTestTrackIndex];
SegmentViewModelBase segmentToMove = _timelineSegmentProvidingViewModel.SegmentViewModels[segmentViewModelIndex];
Assert.Equal(isSelectedSegmentPreMove, segmentToMove == _viewModel.TimelineSegmentProvidingViewModel.SelectedSegment);
int originalTrackNumber = segmentToMove.TrackNumber;
int originalStartFrame = segmentToMove.StartFrame;
int originalEndFrame = segmentToMove.EndFrame;
int newEndFrame = newStartFrame + segmentToMove.FrameDuration - 1;
// Key frame tests
int startFrameOffset = newStartFrame - originalStartFrame;
int[] originalKeyFrameNumbers = segmentToMove.KeyFrameViewModels.Select(kfvm => kfvm.FrameNumber).ToArray();
_viewModel.MoveTrackSegment(segmentToMove, newTrackNumber, newStartFrame);
Assert.Equal(newTrackNumber, segmentToMove.TrackNumber);
Assert.Equal(newStartFrame, segmentToMove.StartFrame);
Assert.Equal(newEndFrame, segmentToMove.EndFrame);
Assert.Equal(1, _viewModel.TimelineSegments.Count(segment => segment == segmentToMove));
Assert.DoesNotContain(segmentToMove, _viewModel.TimelineTrackCollection[originalTrackNumber].TrackSegments);
Assert.Contains(segmentToMove, _viewModel.TimelineTrackCollection[newTrackNumber].TrackSegments);
// Key frame tests
for (int i = 0; i < segmentToMove.KeyFrameViewModels.Count; i++)
{
Assert.Equal(originalKeyFrameNumbers[i] + startFrameOffset, segmentToMove.KeyFrameViewModels[i].FrameNumber);
}
if (isSelectedSegmentPreMove)
{
Assert.False(segmentToMove == _viewModel.TimelineSegmentProvidingViewModel.SelectedSegment);
}
Assert.True(_undoRoot.CanUndo);
_undoRoot.Undo();
Assert.Equal(originalTrackNumber, segmentToMove.TrackNumber);
Assert.Equal(originalStartFrame, segmentToMove.StartFrame);
Assert.Equal(originalEndFrame, segmentToMove.EndFrame);
Assert.Equal(1, _viewModel.TimelineSegments.Count(segment => segment == segmentToMove));
Assert.DoesNotContain(segmentToMove, _viewModel.TimelineTrackCollection[newTrackNumber].TrackSegments);
Assert.Contains(segmentToMove, _viewModel.TimelineTrackCollection[originalTrackNumber].TrackSegments);
// Key frame tests
for (int i = 0; i < segmentToMove.KeyFrameViewModels.Count; i++)
{
Assert.Equal(originalKeyFrameNumbers[i], segmentToMove.KeyFrameViewModels[i].FrameNumber);
}
Assert.Equal(isSelectedSegmentPreMove, segmentToMove == _viewModel.TimelineSegmentProvidingViewModel.SelectedSegment);
}