/// <summary>
/// Locates the view for the specified model instance.
/// </summary>
/// <param name="model">the model instance.</param>
/// <param name="context">The context (or null).</param>
/// <returns>The view.</returns>
public UIElement LocateForModel(object model, string context)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
var view = TryGetViewFromViewAware(model, context);
if (view != null)
{
Log.Info("Using cached view for {0}.", model);
return(view);
}
var modelType = model.GetType();
var viewType = _typeResolver.GetViewType(modelType, context);
if (viewType == null)
{
Log.Error("Cannot find view for {0}.", modelType);
return(new TextBlock {
Text = string.Format("Cannot find view for {0}.", modelType)
});
}
view = IoC.GetInstance(viewType) as UIElement;
if (view == null)
{
view = (UIElement)Activator.CreateInstance(viewType);
}
return(view);
}
/// <summary>
/// Navigate to the specified model type.
/// </summary>
/// <param name="viewModelType">The model type to navigate to.</param>
/// <param name="parameter">The object parameter to pass to the target.</param>
/// <returns>Whether or not navigation succeeded.</returns>
public bool NavigateToViewModel(Type viewModelType, object parameter = null)
{
var viewType = _viewModelTypeResolver.GetViewType(viewModelType, null);
if (viewType == null)
{
throw new InvalidOperationException(string.Format("No view was found for {0}.", viewModelType.FullName));
}
return(Navigate(viewType, parameter));
}
/// <summary>
/// Locates the view for the specified model instance.
/// </summary>
/// <param name="model">the model instance.</param>
/// <param name="context">The context (or null).</param>
/// <returns>The view.</returns>
public UIElement LocateForModel(object model, string context)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
var view = TryGetViewFromViewAware(model, context);
if (view != null)
{
Log.Info("Using cached view for {0}.", model);
return(view);
}
var modelType = model.GetType();
var viewType = _typeResolver.GetViewType(modelType, context);
if (viewType == null)
{
Log.Error("Cannot find view for {0}.", modelType);
return(new TextBlock {
Text = string.Format("Cannot find view for {0}.", modelType)
});
}
view = IoC.GetAllInstances(viewType).FirstOrDefault() as UIElement;
if (view != null)
{
return(view);
}
var viewTypeInfo = viewType.GetTypeInfo();
var uiElementInfo = typeof(UIElement).GetTypeInfo();
if (viewTypeInfo.IsInterface || viewTypeInfo.IsAbstract || !uiElementInfo.IsAssignableFrom(viewTypeInfo))
{
Log.Error("Cannot create {0}.", viewType);
return(new TextBlock {
Text = string.Format("Cannot create {0}.", viewType)
});
}
view = (UIElement)Activator.CreateInstance(viewType);
return(view);
}
