/// <summary>
/// Finds a view model that is representing the given model element.
/// </summary>
/// <param name="element">Model element.</param>
/// <returns>View model if found; Null otherwise.</returns>
public virtual BaseModelElementTreeViewModel FindViewModel(ModelElement element)
{
if (element == null)
{
return(null);
}
if (element == this.Element)
{
return(this);
}
// search the children (without their children) first
foreach (BaseModelElementTreeViewModel viewModel in this.ChildrenStorage)
{
if (viewModel.Element == element)
{
return(viewModel);
}
}
// continue search among children's children
foreach (BaseModelElementTreeViewModel viewModel in this.ChildrenStorage)
{
BaseModelElementTreeViewModel modelFound = viewModel.FindViewModel(element);
if (modelFound != null)
{
return(modelFound);
}
}
return(null);
}
/// <summary>
/// Method which removes the given view model from the children property
/// </summary>
/// <param name="viewModel">Domain model representing the child element to be removed from the children property.</param>
public virtual void DeleteElementFromCollection(BaseModelElementTreeViewModel viewModel)
{
if (childrenCollectionStorage.Contains(viewModel))
{
childrenCollectionStorage.Remove(viewModel);
}
}
/// <summary>
/// Clear resources.
/// </summary>
protected override void OnDispose()
{
if (contextMenu != null)
{
contextMenu.Dispose();
}
contextMenu = null;
base.OnDispose();
this.IsSelected = false;
if (this.Parent != null)
{
if (Parent.Children != null)
{
this.Parent.DeleteElementFromCollection(this);
}
}
if (this.childrenCollectionStorage != null)
{
for (var i = childrenCollectionStorage.Count - 1; i >= 0; i--)
{
childrenCollectionStorage[i].Dispose();
}
}
this.parent = null;
this.childrenCollectionStorage = null;
this.childrenCollectionStorageReadOnly = null;
//this.localContextMenuProvider = null;
//this.localSortingProvider = null;
}
protected override void Initialize()
{
base.Initialize();
List <Guid> relationshipOrder;
ParentChildrenMapping[this.ModelData.CurrentModelContext.ModelContextId].TryGetValue(this.ElementInfo.Id, out relationshipOrder);
if (relationshipOrder != null)
{
foreach (Guid relationshipDCId in relationshipOrder)
{
DomainRelationshipInfo relationshipInfo = this.Store.DomainDataDirectory.GetDomainRelationship(relationshipDCId);
if (DoHookUpEvents)
{
DomainRelationshipAdvancedInfo advancedInfo = this.Store.DomainDataAdvDirectory.GetRelationshipInfo(relationshipDCId);
//if (!advancedInfo.TargetRoleIsUIBrowsable || !advancedInfo.TargetRoleIsGenerated)
//if (!advancedInfo.SourceRoleIsUIBrowsable || !advancedInfo.SourceRoleIsGenerated)
if (!advancedInfo.SourceRoleIsUIBrowsable)
{
continue;
}
// Subscribe to add and delete element events
this.EventManager.GetEvent <ModelElementLinkAddedEvent>().Subscribe(
this.Store.DomainDataDirectory.GetDomainRelationship(relationshipInfo.Id), true,
this.Element.Id, new System.Action <ElementAddedEventArgs>(OnChildElementAdded));
this.EventManager.GetEvent <ModelElementLinkDeletedEvent>().Subscribe(
this.Store.DomainDataDirectory.GetDomainRelationship(relationshipInfo.Id), true,
this.Element.Id, new System.Action <ElementDeletedEventArgs>(OnChildElementDeleted));
// Subscribe to role player change events
this.EventManager.GetEvent <ModelRolePlayerChangedEvent>().Subscribe(
this.Store.DomainDataDirectory.GetDomainRelationship(relationshipInfo.Id), true,
this.Element.Id, new System.Action <RolePlayerChangedEventArgs>(OnRolePlayerChanged));
this.EventManager.GetEvent <ModelRolePlayerMovedEvent>().Subscribe(
this.Store.DomainDataDirectory.GetDomainRelationship(relationshipInfo.Id),
this.Element.Id, new System.Action <RolePlayerOrderChangedEventArgs>(OnRolePlayerMoved));
}
// element link order
this.ElementLinkOrder.Add(relationshipInfo.Id);
System.Collections.ObjectModel.ReadOnlyCollection <ElementLink> links = DomainRoleInfo.GetElementLinks <ElementLink>(this.Element, GetSourceDomainRole(relationshipInfo).Id);
foreach (ElementLink link in links)
{
BaseModelElementTreeViewModel vm = AddChildElement(link, DomainRoleInfo.GetTargetRolePlayer(link), true);
vm.RelationshipInfo = relationshipInfo;
vm.ElementInfo = GetTargetDomainRole(relationshipInfo).RolePlayer;
}
}
}
}
/// <summary>
/// Deletes a view model for the given element from the children collection of the current vm.
/// </summary>
/// <param name="element">Element.</param>
protected virtual void RemoveChildElement(ModelElement element)
{
// remove VModellvariante from children collection
BaseModelElementTreeViewModel viewModel = this.FindViewModel(element);
if (viewModel != null)
{
viewModel.Dispose();
}
viewModel = null;
}
protected BaseModelElementTreeViewModel(ViewModelStore viewModelStore, ModelElement element, ElementLink link, Guid domainRoleId, BaseModelElementTreeViewModel parent, bool bHookUpEvents, bool bCreateContextMenus, MainModelTreeViewModel mainModelTreeVm)
: base(viewModelStore, element, bHookUpEvents, false)
{
this.parent = parent;
this.mainModelTreeVm = mainModelTreeVm;
this.bCreateContextMenus = bCreateContextMenus;
this.elementLink = link;
this.domainRoleId = domainRoleId;
this.elementLinkOrder = new List<Guid>();
if (link != null)
this.linkDomainClassId = link.GetDomainClass().Id;
else
this.linkDomainClassId = Guid.Empty;
Initialize();
}
protected BaseModelElementTreeViewModel(ViewModelStore viewModelStore, ModelElement element, ElementLink link, Guid domainRoleId, BaseModelElementTreeViewModel parent, bool bHookUpEvents, bool bCreateContextMenus, MainModelTreeViewModel mainModelTreeVm)
: base(viewModelStore, element, bHookUpEvents, false)
{
this.parent = parent;
this.mainModelTreeVm = mainModelTreeVm;
this.bCreateContextMenus = bCreateContextMenus;
this.elementLink = link;
this.domainRoleId = domainRoleId;
this.elementLinkOrder = new List <Guid>();
if (link != null)
{
this.linkDomainClassId = link.GetDomainClass().Id;
}
else
{
this.linkDomainClassId = Guid.Empty;
}
Initialize();
}
/// <summary>
/// Reset selection.
/// </summary>
protected override void OnReset()
{
if (this.selectedItemViewModel != null)
this.selectedItemViewModel.IsSelected = false;
this.clickedItemViewModel = null;
this.selectedItemViewModel = null;
this.contextMenu = null;
this.contextMenu = this.defaultContextMenu;
if (rootViewModels != null)
rootViewModels.Clear();
rootViewModels = null;
if (rootTreeViewItemViewModelStorage != null)
rootTreeViewItemViewModelStorage.Dispose();
rootTreeViewItemViewModelStorage = null;
base.OnReset();
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="viewModelStore">View model store containing view models.</param>
/// <param name="element">Element represented by this view model.</param>
/// <param name="link">Element link, targeting the hosted element.</param>
/// <param name="domainRoleId">Domain role id of the role that the hosted element belongs to.</param>
/// <param name="parent">Parent of this view model. Can be null.</param>
/// <param name="mainModelTreeVm">Model tree view model, this element vm belongs to.</param>
protected BaseModelElementTreeViewModel(ViewModelStore viewModelStore, ModelElement element, ElementLink link, Guid domainRoleId, BaseModelElementTreeViewModel parent, MainModelTreeViewModel mainModelTreeVm)
:this(viewModelStore, element, link, domainRoleId, parent, false, false, mainModelTreeVm)
{
}
/// <summary>
/// Clear resources.
/// </summary>
protected override void OnDispose()
{
if (contextMenu != null)
contextMenu.Dispose();
contextMenu = null;
base.OnDispose();
this.IsSelected = false;
if (this.Parent != null)
if( Parent.Children != null )
this.Parent.DeleteElementFromCollection(this);
if (this.childrenCollectionStorage != null)
{
for (var i = childrenCollectionStorage.Count - 1; i >= 0; i--)
{
childrenCollectionStorage[i].Dispose();
}
}
this.parent = null;
this.childrenCollectionStorage = null;
this.childrenCollectionStorageReadOnly = null;
//this.localContextMenuProvider = null;
//this.localSortingProvider = null;
}
/// <summary>
/// Method which removes the given view model from the children property
/// </summary>
/// <param name="viewModel">Domain model representing the child element to be removed from the children property.</param>
public virtual void DeleteElementFromCollection(BaseModelElementTreeViewModel viewModel)
{
if (childrenCollectionStorage.Contains(viewModel))
childrenCollectionStorage.Remove(viewModel);
}
/// <summary>
/// Method which adds an element to the children property for treeview display. You can override
/// this method to create custom sorting behaviour.
/// </summary>
/// <param name="link">Embedding relationship including the given model element as the child (target).</param>
/// <param name="viewModel">Domain model representing the child element to be added to children property for treeview display.</param>
public virtual void AddElementToCollection(ElementLink link, BaseModelElementTreeViewModel viewModel)
{
this.SortingProvider.InsertElement(this, this.childrenCollectionStorage, link, viewModel);
}
/// <summary>
/// Method used to add a element into a sorted collection without destroying the sorting order.
/// </summary>
/// <param name="parent">Parent model element vm.</param>
/// <param name="collection">Sorted collection to add the new view models to.</param>
/// <param name="link">Embedding relationship including the model element as the child (target).</param>
/// <param name="c">View model representing the model element to be added to the collection.</param>
public virtual void InsertElement(BaseModelElementTreeViewModel parent, ObservableCollection <BaseModelElementTreeViewModel> collection, ElementLink link, BaseModelElementTreeViewModel c)
{
// we are adding elements sorted first by type and name
// if the element doesnt have a name, we add it at the end of the list (still sorted by type)
if (!c.DomainElementHasName)
{
for (int i = collection.Count - 1; i >= 0; i--)
{
BaseModelElementTreeViewModel vm = collection[i];
if (vm.DomainElementTypeDisplayName == c.DomainElementTypeDisplayName)
{
collection.Insert(i + 1, c);
return;
}
}
}
else
{
if (c.DomainElementName == null)
{
throw new System.ArgumentNullException("DomainElementName can not be null");
}
bool bFoundType = false;
for (int i = 0; i < collection.Count; ++i)
{
BaseModelElementTreeViewModel vm = collection[i];
if (vm.DomainElementTypeDisplayName == c.DomainElementTypeDisplayName)
{
bFoundType = true;
if (c.DomainElementName.CompareTo(vm.DomainElementName) <= 0)
{
collection.Insert(i, c);
return;
}
}
else if (bFoundType)
{
collection.Insert(i, c);
return;
}
}
if (bFoundType)
{
collection.Add(c);
return;
}
}
// if no element of type of c is present, we add it sorted by type
for (int i = 0; i < collection.Count; ++i)
{
BaseModelElementTreeViewModel vm = collection[i];
if (c.DomainElementTypeDisplayName.CompareTo(vm.DomainElementTypeDisplayName) <= 0)
{
collection.Insert(i, c);
return;
}
}
// if no element at all is present, add c at the end
collection.Add(c);
}
/// <summary>
/// Method used to add a element into a sorted collection without destroying the sorting order.
/// </summary>
/// <param name="parent">Parent model element vm.</param>
/// <param name="collection">Sorted collection to add the new view models to.</param>
/// <param name="link">Embedding relationship including the model element as the child (target).</param>
/// <param name="c">View model representing the model element to be added to the collection.</param>
public virtual void InsertElement(BaseModelElementTreeViewModel parent, ObservableCollection<BaseModelElementTreeViewModel> collection, ElementLink link, BaseModelElementTreeViewModel c)
{
// we are adding elements sorted first by type and name
// if the element doesnt have a name, we add it at the end of the list (still sorted by type)
if (!c.DomainElementHasName)
{
for (int i = collection.Count - 1; i >= 0; i--)
{
BaseModelElementTreeViewModel vm = collection[i];
if (vm.DomainElementTypeDisplayName == c.DomainElementTypeDisplayName)
{
collection.Insert(i + 1, c);
return;
}
}
}
else
{
if (c.DomainElementName == null)
throw new System.ArgumentNullException("DomainElementName can not be null");
bool bFoundType = false;
for (int i = 0; i < collection.Count; ++i)
{
BaseModelElementTreeViewModel vm = collection[i];
if (vm.DomainElementTypeDisplayName == c.DomainElementTypeDisplayName)
{
bFoundType = true;
if (c.DomainElementName.CompareTo(vm.DomainElementName) <= 0)
{
collection.Insert(i, c);
return;
}
}
else if (bFoundType)
{
collection.Insert(i, c);
return;
}
}
if (bFoundType)
{
collection.Add(c);
return;
}
}
// if no element of type of c is present, we add it sorted by type
for (int i = 0; i < collection.Count; ++i)
{
BaseModelElementTreeViewModel vm = collection[i];
if (c.DomainElementTypeDisplayName.CompareTo(vm.DomainElementTypeDisplayName) <= 0)
{
collection.Insert(i, c);
return;
}
}
// if no element at all is present, add c at the end
collection.Add(c);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="viewModelStore">View model store containing view models.</param>
/// <param name="element">Element represented by this view model.</param>
/// <param name="link">Element link, targeting the hosted element.</param>
/// <param name="domainRoleId">Domain role id of the role that the hosted element belongs to.</param>
/// <param name="parent">Parent of this view model. Can be null.</param>
/// <param name="mainModelTreeVm">Model tree view model, this element vm belongs to.</param>
protected BaseModelElementTreeViewModel(ViewModelStore viewModelStore, ModelElement element, ElementLink link, Guid domainRoleId, BaseModelElementTreeViewModel parent, MainModelTreeViewModel mainModelTreeVm)
: this(viewModelStore, element, link, domainRoleId, parent, false, false, mainModelTreeVm)
{
}
private void SetSelectedElementInTree(BaseModelElementTreeViewModel treeElement, ModelElement modelElement)
{
if (treeElement.Element.Id == modelElement.Id)
{
//ModelTreeSelectedElement = treeElement;
treeElement.IsSelected = true;
treeElement.IsExpanded = true;
return;
}
foreach (BaseModelElementTreeViewModel v in treeElement.Children)
SetSelectedElementInTree(v, modelElement);
}
private void InitVM()
{
if (rootViewModels == null && this.ModelData.CurrentModelContext.RootElement != null)
{
rootTreeViewItemViewModelStorage = this.ViewModelStore.Factory.CreateModelElementTreeViewModel(this.ModelData.CurrentModelContext.RootElement, true, true, null);
rootViewModels = new System.Collections.ObjectModel.ObservableCollection<BaseModelElementTreeViewModel>();
rootViewModels.Add(rootTreeViewItemViewModelStorage);
}
OnPropertyChanged("RootViewModels");
}
private void ResetVM()
{
SelectedPath = "";
if (rootViewModels != null)
rootViewModels.Clear();
rootViewModels = null;
if (rootTreeViewItemViewModelStorage != null)
rootTreeViewItemViewModelStorage.Dispose();
rootTreeViewItemViewModelStorage = null;
OnPropertyChanged("RootViewModels");
}
/// <summary>
/// Method which adds an element to the children property for treeview display. You can override
/// this method to create custom sorting behaviour.
/// </summary>
/// <param name="link">Embedding relationship including the given model element as the child (target).</param>
/// <param name="viewModel">Domain model representing the child element to be added to children property for treeview display.</param>
public virtual void AddElementToCollection(ElementLink link, BaseModelElementTreeViewModel viewModel)
{
this.SortingProvider.InsertElement(this, this.childrenCollectionStorage, link, viewModel);
}
/// <summary>
/// Finds a view model that is representing the given model element.
/// </summary>
/// <param name="elementId">Model element id.</param>
/// <returns>View model if found; Null otherwise.</returns>
public virtual string FindViewModel(Guid elementId, BaseModelElementTreeViewModel vm)
{
// search the children (without their children) first
foreach (BaseModelElementTreeViewModel viewModel in vm.Children)
if (viewModel.Element.Id == elementId)
return viewModel.Id.ToString();
// continue search among children's children
foreach (BaseModelElementTreeViewModel viewModel in vm.Children)
{
string modelFound = FindViewModel(elementId, viewModel);
if (modelFound != null)
return viewModel.Id + "\\" + modelFound;
}
return null;
}
