void TrendView_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
ViewModel.TrendViewModel tv = (ViewModel.TrendViewModel)DataContext;
if (e.OldValue != null)
{
((ViewModel.TrendViewModel)e.OldValue).PropertyChanged -= tv_PropertyChanged;
}
tv.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(tv_PropertyChanged);
tv.UpdateCommand.Execute(null);
}
/*void TrendView_Loaded(object sender, RoutedEventArgs e)
* {
* ViewModel.TrendViewModel tv = (ViewModel.TrendViewModel)DataContext;
* tv.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(tv_PropertyChanged);
* tv.Home.Execute(null);
*
* }*/
void tv_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e.PropertyName == "Data")
{
ViewModel.TrendViewModel tv = (ViewModel.TrendViewModel)sender;
_trend.Children.RemoveAll(typeof(LineGraph));
_trend.Viewport.Visible = new Rect(_timeAxis.ConvertToDouble(tv.From), tv.Min, _timeAxis.ConvertToDouble(tv.To) - _timeAxis.ConvertToDouble(tv.From), tv.Max);
int i = 0;
foreach (ChartModel cm in tv.Data)
{
EnumerableDataSource <ChartItemModel> eds = new EnumerableDataSource <ChartItemModel>(cm.ChartData);
cm.ChartData.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler(TrendView_CollectionChanged);
eds.SetXYMapping(dfc => new Point(_timeAxis.ConvertToDouble(dfc.Timestamp), dfc.Value));
_trend.AddLineGraph(eds, new Pen(cm.Color, 2.0), new PenDescription(cm.Name));
}
}
}
void TrendView_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
ViewModel.TrendViewModel tv = (ViewModel.TrendViewModel)DataContext;
_trend.Viewport.Visible = new Rect(_timeAxis.ConvertToDouble(tv.From), tv.Min, _timeAxis.ConvertToDouble(tv.To) - _timeAxis.ConvertToDouble(tv.From), tv.Max);
}
