/// <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();
}
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");
}
/// <summary>
/// Updates the model tree, based on SelectedItemsCollection.
/// </summary>
private void UpdateModelTree()
{
if (selectedItemsCollection == null)
{
// clear selection
if (this.SelectedItemViewModel != null)
{
this.SelectedItemViewModel.IsSelected = false;
}
this.SelectedItemViewModel = null;
return;
}
if (selectedItemsCollection.Count == 1)
{
// search for the view model and select it
BaseModelElementTreeViewModel foundModel = null;
foreach (BaseModelElementTreeViewModel m in RootViewModels)
{
foundModel = m.FindViewModel(selectedItemsCollection[0] as ModelElement);
if (foundModel != null)
{
//foundModel.IsSelected = true;
this.SelectedItemViewModel = foundModel;
}
}
if (foundModel == null)
{
// clear selection
if (this.SelectedItemViewModel != null)
{
this.SelectedItemViewModel.IsSelected = false;
}
this.SelectedItemViewModel = null;
}
}
else
{
// clear selection
if (this.SelectedItemViewModel != null)
{
this.SelectedItemViewModel.IsSelected = false;
}
this.SelectedItemViewModel = null;
}
}
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 ResetVM()
{
SelectedPath = "";
if (rootViewModels != null)
{
rootViewModels.Clear();
}
rootViewModels = null;
if (rootTreeViewItemViewModelStorage != null)
{
rootTreeViewItemViewModelStorage.Dispose();
}
rootTreeViewItemViewModelStorage = null;
OnPropertyChanged("RootViewModels");
}
/// <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);
}
