public ZoomHistoryMvvmViewModel()
{
_rangeHistoryCompare = new RangeHistorySameCompare();
var vm1 = new LineRenderableSeriesViewModel
{
DataSeries = FillData(new XyDataSeries <double, double>(), "firstDataSeries"),
XAxisId = _xAxisKey.Id,
YAxisId = _y0AxisKey.Id,
StrokeThickness = 2,
Stroke = Color.FromArgb(0xff, 0x64, 0x95, 0xed),
};
var vm2 = new LineRenderableSeriesViewModel
{
DataSeries = FillData(new XyDataSeries <double, double>(), "secondDataSeries"),
XAxisId = _xAxisKey.Id,
YAxisId = _y1AxisKey.Id,
StrokeThickness = 2,
Stroke = Color.FromArgb(0xff, 0xff, 0x45, 0x00),
};
RenderableSeriesViewModels = new List <IRenderableSeriesViewModel> {
vm1, vm2
};
_zoomHistoryManager = new ZoomHistoryManager();
_zoomHistoryManager.RangeHistoryChanged += OnRangeHistoryChanged;
_undoCommand = new ActionCommand(() =>
{
if (_zoomHistoryManager.CanUndo())
{
_zoomHistoryManager.Undo();
var index = RangesHistory.IndexOf(_selectedRange, _rangeHistoryCompare);
_selectedRange = RangesHistory[index - 1];
OnPropertyChanged("SelectedRange");
RaiseUndoRedoCanExecute();
}
}, () => _zoomHistoryManager.CanUndo());
_redoCommand = new ActionCommand(() =>
{
if (_zoomHistoryManager.CanRedo())
{
_zoomHistoryManager.Redo();
var index = RangesHistory.IndexOf(_selectedRange, _rangeHistoryCompare);
_selectedRange = RangesHistory[index + 1];
OnPropertyChanged("SelectedRange");
RaiseUndoRedoCanExecute();
}
}, () => _zoomHistoryManager.CanRedo());
}
public bool Equals(ChartRangeHistory other)
{
if (ReferenceEquals(null, other))
{
return(false);
}
if (ReferenceEquals(this, other))
{
return(true);
}
return(other.XAxisRange.Equals(XAxisRange) &&
other.Y0AxisRange.Equals(Y0AxisRange) &&
other.Y1AxisRange.Equals(Y1AxisRange));
}
private void OnRangeHistoryChanged(object sender, HistoryChangedEventArgs args)
{
if (args.OldRanges != null)
{
for (int i = 0; i < args.DisposedAmount; i++)
{
RangesHistory.RemoveAt(RangesHistory.Count - 1);
}
}
if (args.NewRanges != null && args.NewRanges.Count > 0)
{
var newRanges = args.NewRanges;
if (newRanges.Count < AxisAmount)
{
newRanges = FillRanges(newRanges);
}
var item = new ChartRangeHistory(newRanges)
{
ItemId = Guid.NewGuid().ToString()
};
RangesHistory.Add(item);
while (RangesHistory.Count > ZoomHistoryManager.HistoryDepth)
{
RangesHistory.RemoveAt(0);
}
OnPropertyChanged("RangesHistory");
_selectedRange = item;
OnPropertyChanged("SelectedRange");
}
RaiseUndoRedoCanExecute();
}
