public void PropertiesTest()
{
var vm = new GadgetTabViewConverter();
TestsHelper.TestPublicDeclaredPropertiesGetSet(vm, true);
}
/// <summary>
/// Modifies the source data before passing it to the target for display in the UI.
/// </summary>
/// <param name="value">The source data being passed to the target.</param>
/// <param name="targetType">The <see cref="T:System.Type" /> of data expected by the target dependency property.</param>
/// <param name="parameter">An optional parameter to be used in the converter logic.</param>
/// <param name="culture">The culture of the conversion.</param>
/// <returns>The value to be passed to the target dependency property.</returns>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (DesignerProperties.IsInDesignTool)
return value;
var ComposedConverter = new GadgetTabViewConverter();
lock (ComposedConverter)
{
if (ComposedConverter.Router == null)
{
if (Router != null)
{
ComposedConverter.Router = Router;
ComposedConverter.Views = Views;
}
else
CompositionInitializer.SatisfyImports(ComposedConverter);
}
}
if (_registeredViews == null) _registeredViews = new Dictionary<IGadgetTabViewModel, UserControl>();
if (ComposedConverter.Router == null)
{
return value;
}
// if the value is a view model and a view tag was passed, resolve them
var key = value as IGadgetTabViewModel;
if (key != null)
{
//check if view is already regestered
if (_registeredViews.ContainsKey(key))
{
var view = _registeredViews[key];
cleanParentRef(view);
return view;
}
// first get the view model tag
var exportAttribute = key.GetType().GetCustomAttributes(true).OfType<ExportAsViewModelAttribute>().FirstOrDefault();
if (exportAttribute == null)
{
return value;
}
var viewModelTag = exportAttribute.ViewModelType;
var views = ComposedConverter.Router.Value.GetViewTagsForViewModel(viewModelTag);
UserControl result = null;
// we always assume the first view
if (views.Length > 0)
{
result = ComposedConverter.Router.Value.GetNonSharedView(views[0], key);
if (result == null)
{
var viewEntry = ComposedConverter.Views.FirstOrDefault(v => v.Metadata.ExportedViewType.Equals(views[0]));
if (viewEntry != null)
result = viewEntry.Value;
}
}
if (result != null)
{
result.DataContext = value;
_registeredViews.Add(key, result);
cleanParentRef(result);
return result;
}
}
return value;
}