public static ObservableViewModel CombineViewModels(IViewModelServiceProvider serviceProvider, ModelContainer modelContainer, IEnumerable <ObservableViewModel> viewModels)
{
var combinedViewModel = new ObservableViewModel(serviceProvider, modelContainer);
var rootNodes = new List <ObservableModelNode>();
foreach (var viewModel in viewModels)
{
if (!(viewModel.RootNode is SingleObservableNode))
{
throw new ArgumentException(@"The view models to combine must contains SingleObservableNode.", "viewModels");
}
foreach (var dirtiableViewModel in viewModel.dirtiableViewModels)
{
combinedViewModel.dirtiableViewModels.Add(dirtiableViewModel.Key, dirtiableViewModel.Value.ToList());
}
var rootNode = (ObservableModelNode)viewModel.RootNode;
rootNodes.Add(rootNode);
}
if (rootNodes.Count < 2)
{
throw new ArgumentException(@"Called CombineViewModels with a collection of view models that is either empty or containt just a single item.", "viewModels");
}
CombinedObservableNode rootCombinedNode = CombinedObservableNode.Create(combinedViewModel, "Root", null, typeof(object), rootNodes, null);
combinedViewModel.Identifier = new ObservableViewModelIdentifier(rootNodes.Select(x => x.ModelGuid));
rootCombinedNode.Initialize();
combinedViewModel.RootNode = rootCombinedNode;
return(combinedViewModel);
}
private void GenerateChildren(IEnumerable <KeyValuePair <string, List <SingleObservableNode> > > commonChildren)
{
foreach (var children in commonChildren)
{
var contentType = children.Value.First().Type;
var index = children.Value.First().Index;
CombinedObservableNode child = Create(Owner, children.Key, this, contentType, children.Value, index);
AddChild(child);
child.Initialize();
}
}
public static ObservableViewModel CombineViewModels(IViewModelServiceProvider serviceProvider, IReadOnlyCollection <ObservableViewModel> viewModels)
{
if (serviceProvider == null)
{
throw new ArgumentNullException(nameof(serviceProvider));
}
if (viewModels == null)
{
throw new ArgumentNullException(nameof(viewModels));
}
var combinedViewModel = new ObservableViewModel(serviceProvider);
var rootNodes = new List <ObservableModelNode>();
foreach (var viewModel in viewModels)
{
if (!(viewModel.RootNode is SingleObservableNode))
{
throw new ArgumentException(@"The view models to combine must contains SingleObservableNode.", nameof(viewModels));
}
viewModel.parent = combinedViewModel;
combinedViewModel.children.Add(viewModel);
var rootNode = (ObservableModelNode)viewModel.RootNode;
rootNodes.Add(rootNode);
}
if (rootNodes.Count < 2)
{
throw new ArgumentException(@"Called CombineViewModels with a collection of view models that is either empty or containt just a single item.", nameof(viewModels));
}
// Find best match for the root node type
var rootNodeType = rootNodes.First().Root.Type;
if (rootNodes.Skip(1).Any(x => x.Type != rootNodeType))
{
rootNodeType = typeof(object);
}
CombinedObservableNode rootCombinedNode = CombinedObservableNode.Create(combinedViewModel, "Root", null, rootNodeType, rootNodes, Index.Empty);
rootCombinedNode.Initialize();
combinedViewModel.RootNode = rootCombinedNode;
return(combinedViewModel);
}
private void GenerateListChildren(IEnumerable <KeyValuePair <object, List <SingleObservableNode> > > allChildren)
{
int currentIndex = 0;
foreach (var children in allChildren)
{
if (!ShouldCombine(children.Value, CombinedNodes.Count, "(ListItem)", true))
{
continue;
}
var contentType = children.Value.First().Type;
var name = $"Item {currentIndex}";
CombinedObservableNode child = Create(Owner, name, this, contentType, children.Value, new Index(currentIndex));
AddChild(child);
child.Initialize();
child.DisplayName = name;
++currentIndex;
}
}
internal static CombinedObservableNode Create(ObservableViewModel ownerViewModel, string name, CombinedObservableNode parent, Type contentType, IEnumerable <SingleObservableNode> combinedNodes, Index index)
{
var node = (CombinedObservableNode)Activator.CreateInstance(typeof(CombinedObservableNode <>).MakeGenericType(contentType), ownerViewModel, name, combinedNodes, index);
return(node);
}
internal static CombinedObservableNode Create(ObservableViewModel ownerViewModel, string name, CombinedObservableNode parent, Type contentType, IEnumerable<SingleObservableNode> combinedNodes, object index)
{
var node = (CombinedObservableNode)Activator.CreateInstance(typeof(CombinedObservableNode<>).MakeGenericType(contentType), ownerViewModel, name, combinedNodes, index);
return node;
}
protected CombinedObservableNode(ObservableViewModel ownerViewModel, string name, CombinedObservableNode parentNode, IEnumerable <SingleObservableNode> combinedNodes, object index)
: base(ownerViewModel, parentNode, index)
{
this.combinedNodes = new List <SingleObservableNode>(combinedNodes);
Name = name;
DisplayName = this.combinedNodes.First().DisplayName;
combinedNodeInitialValues = new List <object>();
distinctCombinedNodeInitialValues = new HashSet <object>();
bool isReadOnly = false;
bool isVisible = false;
bool nullOrder = false;
foreach (var node in this.combinedNodes)
{
if (node.IsReadOnly)
{
isReadOnly = true;
}
if (node.IsVisible)
{
isVisible = true;
}
if (node.Order == null)
{
nullOrder = true;
}
if (order == node.Order || (!nullOrder && order == null))
{
order = node.Order;
}
combinedNodeInitialValues.Add(node.Value);
distinctCombinedNodeInitialValues.Add(node.Value);
node.PropertyChanged += NodePropertyChanged;
}
IsReadOnly = isReadOnly;
IsVisible = isVisible;
ResetInitialValues = new AnonymousCommand(ServiceProvider, () => { Owner.BeginCombinedAction(); CombinedNodes.Zip(combinedNodeInitialValues).ForEach(x => x.Item1.Value = x.Item2); Refresh(); Owner.EndCombinedAction(Owner.FormatCombinedUpdateMessage(this, null), Path, null); });
}
