public void Invoke(object instance,
params object[] parameter)
{
if (instance == null)
{
throw new ArgumentException("Argument must not be null.", "instance");
}
ViewModelMappingAttribute mappingAttribute = ViewModelMappingAttribute.GetFromType(ParentViewItem.PageViewType);
Type viewModelType = mappingAttribute.ViewModelType;
if (instance.GetType() != viewModelType)
{
throw new ArgumentException(String.Format("Argument must be of type '{0}'.", ParentViewItem.PageViewType.Name), "instance");
}
MethodInfo method = viewModelType.GetMethod(MethodName);
if (method != null)
{
method.Invoke(instance, parameter);
}
else
{
App.AppLogger.Logger.Log(devoctomy.DFramework.Logging.Interfaces.LoggerMessageType.Error, "Could not find the method named '{0}' for the type '{1}'", MethodName, viewModelType.Name);
}
}
public Object GetViewModel(View view)
{
App.AppLogger.Logger.Log(devoctomy.DFramework.Logging.Interfaces.LoggerMessageType.VerboseMed | devoctomy.DFramework.Logging.Interfaces.LoggerMessageType.Information, "Getting view model for view type '{0}'.", view.GetType().Name);
Object[] mappingAttributes = view.GetType().GetCustomAttributes(typeof(ViewModelMappingAttribute), true);
if (mappingAttributes != null && mappingAttributes.Length == 1)
{
ViewModelMappingAttribute mappingAttribute = (ViewModelMappingAttribute)mappingAttributes[0];
List <Object> modelList;
if (!_viewModelCache.ContainsKey(view))
{
modelList = new List <Object>();
_viewModelCache.Add(view, modelList);
}
else
{
modelList = _viewModelCache[view];
}
switch (mappingAttribute.Instancing)
{
case ViewModelMappingAttribute.InstancingType.Single:
{
if (modelList.Count == 1)
{
App.AppLogger.Logger.Log(devoctomy.DFramework.Logging.Interfaces.LoggerMessageType.VerboseMed | devoctomy.DFramework.Logging.Interfaces.LoggerMessageType.Information, "Returning existing single instance of view model type '{0}'.", mappingAttribute.ViewModelType);
return(modelList[0]);
}
else
{
App.AppLogger.Logger.Log(devoctomy.DFramework.Logging.Interfaces.LoggerMessageType.VerboseMed | devoctomy.DFramework.Logging.Interfaces.LoggerMessageType.Information, "Creating first single instance of view model type '{0}'.", mappingAttribute.ViewModelType);
Object viewModel = Activator.CreateInstance(mappingAttribute.ViewModelType, view);
modelList.Add(viewModel);
return(viewModel);
}
}
case ViewModelMappingAttribute.InstancingType.Multiple:
{
DLoggerManager.Instance.Logger.Log(devoctomy.DFramework.Logging.Interfaces.LoggerMessageType.VerboseMed | devoctomy.DFramework.Logging.Interfaces.LoggerMessageType.Information, "Creating new multi-instance of view model type '{0}'.", mappingAttribute.ViewModelType);
Object viewModel = Activator.CreateInstance(mappingAttribute.ViewModelType, view);
modelList.Add(viewModel);
return(viewModel);
}
default:
{
throw new InvalidOperationException(String.Format("Instancing type of '{0}' is invalid.", view.GetType().Name));
}
}
}
else
{
return(null);
}
}
