public TypeSelectorViewModel(IResourceServiceModel resourceServiceModel, ResourceTreeItemViewModel resource)
{
_resourceServiceModel = resourceServiceModel;
var rootType = _resourceServiceModel.TypeTree;
var constraint = new[] { rootType.Name };
// Extract children constraint
if (resource != null)
{
var resourceType = _resourceServiceModel.TypeTree.DerivedTypes
.Flatten(t => t.DerivedTypes).First(t => t.Name == resource.Resource.TypeName);
constraint = resourceType.References.First(r => r.Name == "Children").SupportedTypes;
}
var matches = FilterTypes(rootType, constraint);
// If there is a single, abstract root node, we can skip it
if (matches.Count == 1 && !matches[0].Creatable)
{
matches = matches[0].DerivedTypes;
}
TypeTree = matches.Select(type => new ResourceTypeViewModel(type));
CreateCmd = new AsyncCommand(Create, CanCreate);
CancelCmd = new RelayCommand(Cancel, CanCancel);
}
/// <summary>
/// Select <see cref="ResourceTreeItemViewModel"/> and load the details
/// </summary>
private async Task SelectResource(ResourceTreeItemViewModel treeItem)
{
SelectedResource = treeItem;
if (treeItem == null)
{
ShowEmpty();
return;
}
//Select view model for the right resource type
var detailsVm = DetailsFactory.Create(treeItem.Resource.TypeName);
await LoadDetails(() => detailsVm.Load(treeItem.Resource.Id));
ActivateItem(detailsVm);
}