private void VmOnPropertyChanged(object sender, PropertyChangedEventArgs args)
{
if (args.PropertyName == nameof(T4UserControlViewModel.Preview))
{
var vm = (T4UserControlViewModel)DataContext;
if (vm != null && vm.Errors?.Count == 0)
{
using (var stream = GenerateStreamFromString(vm.Preview))
PreviewTextEditor.Load(stream);
}
}
else if (args.PropertyName == nameof(T4UserControlViewModel.Buffer))
{
if (_documentChanging)
{
return;
}
var vm = (T4UserControlViewModel)DataContext;
if (vm != null)
{
using (var stream = GenerateStreamFromString(vm.Buffer))
TextEditor.Load(stream);
}
}
}
private void OnDataContextChanged(object sender, DependencyPropertyChangedEventArgs args)
{
if (args.NewValue != null)
{
var vm = (T4UserControlViewModel)args.NewValue;
using (var stream = GenerateStreamFromString(vm.Buffer))
TextEditor.Load(stream);
using (var stream = GenerateStreamFromString(vm.Preview))
PreviewTextEditor.Load(stream);
vm.PropertyChanged += VmOnPropertyChanged;
}
}