internal CombinedValueChangedActionItem(string displayName, ObservableViewModelService serviceProvider, string observableNodePath, ObservableViewModelIdentifier identifier, IEnumerable<IActionItem> actionItems)
: base(displayName, actionItems)
{
if (serviceProvider == null) throw new ArgumentNullException("serviceProvider");
this.serviceProvider = serviceProvider;
this.observableNodePath = observableNodePath;
this.identifier = identifier;
}
/// <summary>
/// Initializes a new instance of the <see cref="ObservableViewModel"/> class.
/// </summary>
/// <param name="serviceProvider">A service provider that can provide a <see cref="IDispatcherService"/> and an <see cref="ObservableViewModelService"/> to use for this view model.</param>
/// <param name="modelContainer">A <see cref="ModelContainer"/> to use to build view model nodes.</param>
/// <param name="modelNode">The root model node of the view model to generate.</param>
/// <param name="dirtiables">The list of <see cref="IDirtiableViewModel"/> objects linked to this view model.</param>
public ObservableViewModel(IViewModelServiceProvider serviceProvider, ModelContainer modelContainer, IModelNode modelNode, IEnumerable<IDirtiableViewModel> dirtiables)
: this(serviceProvider, modelContainer, dirtiables.SafeArgument("dirtiables").ToList())
{
if (modelNode == null) throw new ArgumentNullException("modelNode");
var node = observableViewModelService.ObservableNodeFactory(this, "Root", modelNode.Content.IsPrimitive, modelNode, new ModelNodePath(modelNode), modelNode.Content.Type, null);
Identifier = new ObservableViewModelIdentifier(node.ModelGuid);
node.Initialize();
RootNode = node;
node.CheckConsistency();
}
public ValueChangedActionItem(string name, ObservableViewModelService service, ModelNodePath nodePath, string observableNodePath, ObservableViewModelIdentifier identifier, object index, IEnumerable<IDirtiableViewModel> dirtiables, object previousValue)
: base(name, dirtiables)
{
if (service == null) throw new ArgumentNullException("service");
if (!nodePath.IsValid) throw new InvalidOperationException("Unable to retrieve the path of the modified node.");
this.service = service;
this.identifier = identifier;
this.PreviousValue = previousValue;
NodePath = nodePath;
Index = index;
ObservableNodePath = observableNodePath;
}
public CombinedNodeCommandWrapper(IViewModelServiceProvider serviceProvider, string name, string observableNodePath, ObservableViewModelIdentifier identifier, IReadOnlyCollection<ModelNodeCommandWrapper> commands)
: base(serviceProvider, null)
{
if (commands == null) throw new ArgumentNullException("commands");
if (commands.Count == 0) throw new ArgumentException(@"The collection of commands to combine is empty", "commands");
if (commands.Any(x => !ReferenceEquals(x.NodeCommand, commands.First().NodeCommand))) throw new ArgumentException(@"The collection of commands to combine cannot contain different node commands", "commands");
service = serviceProvider.Get<ObservableViewModelService>();
this.commands = commands;
this.name = name;
this.identifier = identifier;
this.serviceProvider = serviceProvider;
ObservableNodePath = observableNodePath;
}
public ModelNodeCommandWrapper(IViewModelServiceProvider serviceProvider, INodeCommand nodeCommand, string observableNodePath, ObservableViewModel owner, ModelNodePath nodePath, IEnumerable<IDirtiableViewModel> dirtiables)
: base(serviceProvider, dirtiables)
{
if (nodeCommand == null) throw new ArgumentNullException(nameof(nodeCommand));
if (owner == null) throw new ArgumentNullException(nameof(owner));
NodePath = nodePath;
// Note: the owner should not be stored in the command because we want it to be garbage collectable
Identifier = owner.Identifier;
ModelContainer = owner.ModelContainer;
NodeCommand = nodeCommand;
Service = serviceProvider.Get<ObservableViewModelService>();
ObservableNodePath = observableNodePath;
}
/// <summary>
/// Attempts to resolve the given path on the observable view model corresponding to the given identifier. Returns <c>null</c>
/// if it fails. This method does not throw exceptions.
/// </summary>
/// <param name="identifier">The identifier of the observable view model to resolve.</param>
/// <param name="observableNodePath">The path of the node to resolve.</param>
/// <returns>A reference to the <see cref="ObservableNode"/> corresponding to the given path of the given view model if available, <c>nulll</c> otherwise.</returns>
public ObservableNode ResolveObservableNode(ObservableViewModelIdentifier identifier, string observableNodePath)
{
var observableViewModel = ViewModelProvider != null ? ViewModelProvider(identifier) : null;
return observableViewModel != null ? observableViewModel.ResolveObservableNode(observableNodePath) as ObservableNode : null;
}
