public DiagramViewModel(
IModelService modelService,
IDiagramService diagramService,
IDiagramShapeUiFactory diagramShapeUiFactory,
double minZoom,
double maxZoom,
double initialZoom)
: base(modelService, diagramService)
{
DiagramShapeUiFactory = diagramShapeUiFactory;
DiagramViewportViewModel = new DiagramViewportViewModel(
ModelService,
DiagramService,
diagramShapeUiFactory,
minZoom,
maxZoom,
initialZoom);
RelatedNodeListBoxViewModel = new RelatedNodeListBoxViewModel(ModelService, DiagramService);
RelatedNodeListBoxViewModel.ItemSelected += OnRelatedNodeSelected;
RelatedNodeListBoxViewModel.Items.CollectionChanged += OnRelatedNodeCollectionChanged;
PopupTextViewModel = new AutoHidePopupTextViewModel();
PreviewMouseDownCommand = new DelegateCommand(OnAnyMouseDownEvent);
MouseDownCommand = new DelegateCommand(OnUnhandledMouseDownEvent);
DiagramService.DiagramChanged += OnDiagramChanged;
SubscribeToViewportEvents();
_lastDiagram = DiagramService.LatestDiagram;
}
private void OnRelatedNodeSelectorRequested(RelatedNodeMiniButtonViewModel ownerButton, IReadOnlyList <IModelNode> modelNodes)
{
DiagramViewportViewModel.PinFocus();
var viewModelItems = modelNodes.OrderBy(i => i, _modelNodeComparer).Select(_relatedNodeItemViewModelFactory.Create);
RelatedNodeListBoxViewModel.Show(ownerButton, viewModelItems);
}
private void OnDiagramShapeRemoveRequested(DiagramShapeViewModelBase diagramShapeViewModel)
{
DiagramViewportViewModel.StopFollowingDiagramNodes();
if (RelatedEntityListBoxViewModel.OwnerDiagramShape == diagramShapeViewModel)
{
HideRelatedEntityListBox();
}
}
public void FollowDiagramNodes(IReadOnlyCollection <ModelNodeId> nodeIds)
{
var autoMoveMode = _lastDiagram.Nodes.Count > nodeIds.Count
? ViewportAutoMoveMode.Contain
: ViewportAutoMoveMode.Center;
DiagramViewportViewModel.SetFollowDiagramNodesMode(autoMoveMode);
DiagramViewportViewModel.FollowDiagramNodes(nodeIds);
}
public void FollowDiagramNodes(IReadOnlyList <IDiagramNode> diagramNodes)
{
var autoMoveMode = Diagram.Nodes.Count > diagramNodes.Count
? ViewportAutoMoveMode.Contain
: ViewportAutoMoveMode.Center;
DiagramViewportViewModel.SetFollowDiagramNodesMode(autoMoveMode);
DiagramViewportViewModel.FollowDiagramNodes(diagramNodes);
}
private void OnRemoveDiagramNodeRequested(DiagramNodeViewModel diagramNodeViewModel)
{
DiagramViewportViewModel.StopFollowingDiagramNodes();
if (RelatedNodeListBoxViewModel.OwnerDiagramShape == diagramNodeViewModel)
{
HideRelatedNodeListBox();
}
RemoveDiagramNodeRequested?.Invoke(diagramNodeViewModel.DiagramNode);
}
public void Dispose()
{
RelatedEntityListBoxViewModel.ItemSelected -= OnRelatedEntitySelected;
RelatedEntityListBoxViewModel.Items.CollectionChanged -= OnRelatedEntityCollectionChanged;
RelatedEntityListBoxViewModel.Dispose();
UnsubscribeFromDiagramEvents();
UnsubscribeFromViewportEvents();
DiagramViewportViewModel.Dispose();
}
public override void Dispose()
{
base.Dispose();
RelatedNodeListBoxViewModel.ItemSelected -= OnRelatedNodeSelected;
RelatedNodeListBoxViewModel.Items.CollectionChanged -= OnRelatedNodeCollectionChanged;
RelatedNodeListBoxViewModel.Dispose();
DiagramEventSource.DiagramChanged -= OnDiagramChanged;
UnsubscribeFromViewportEvents();
DiagramViewportViewModel.Dispose();
}
public DiagramViewModel(IArrangedDiagram diagram, double minZoom, double maxZoom, double initialZoom)
: base(diagram)
{
DiagramViewportViewModel = new DiagramViewportViewModel(diagram, minZoom, maxZoom, initialZoom);
RelatedEntityListBoxViewModel = new RelatedEntityListBoxViewModel(diagram);
RelatedEntityListBoxViewModel.ItemSelected += OnRelatedEntitySelected;
RelatedEntityListBoxViewModel.Items.CollectionChanged += OnRelatedEntityCollectionChanged;
PopupTextViewModel = new AutoHidePopupTextViewModel();
PreviewMouseDownCommand = new DelegateCommand(OnAnyMouseDownEvent);
MouseDownCommand = new DelegateCommand(OnUnhandledMouseDownEvent);
SubscribeToDiagramEvents();
SubscribeToViewportEvents();
}
private void HideRelatedNodeListBox()
{
DiagramViewportViewModel.UnpinDecoration();
RelatedNodeListBoxViewModel.Hide();
}
private void OnRelatedNodeSelectorRequested(RelatedNodeMiniButtonViewModel ownerButton, IReadOnlyList <IModelNode> modelNodes)
{
DiagramViewportViewModel.PinDecoration();
RelatedNodeListBoxViewModel.Show(ownerButton, modelNodes);
}
public bool IsDiagramContentVisible() => DiagramViewportViewModel.IsDiagramContentVisible();
public void EnsureRectIsVisible(Rect rect) => DiagramViewportViewModel.EnsureRectIsVisible(rect);
public void ZoomToRect(Rect rect) => DiagramViewportViewModel.ZoomToRect(rect);
public void ExpandAllNodes() => DiagramViewportViewModel.ExpandAllDiagramNodes();
public void KeepDiagramCentered()
{
DiagramViewportViewModel.SetFollowDiagramNodesMode(ViewportAutoMoveMode.Center);
DiagramViewportViewModel.FollowDiagramNodes(_lastDiagram.Nodes.Select(i => i.Id).ToArray());
}
private void HideRelatedNodeListBox()
{
DiagramViewportViewModel.UnpinFocus();
RelatedNodeListBoxViewModel.Hide();
}
public void KeepDiagramCentered()
{
DiagramViewportViewModel.SetFollowDiagramNodesMode(ViewportAutoMoveMode.Center);
DiagramViewportViewModel.FollowDiagramNodes(Diagram.Nodes);
}
private void OnShowRelatedEntitySelectorRequested(ShowRelatedNodeButtonViewModel diagramNodeButtonViewModel, IEnumerable <IModelEntity> modelEntities)
{
DiagramViewportViewModel.PinDecoration();
RelatedEntityListBoxViewModel.Show(diagramNodeButtonViewModel, modelEntities);
}
public void ZoomToContent() => DiagramViewportViewModel.ZoomToContent();
public void StopFollowingDiagramNodes()
{
DiagramViewportViewModel.StopFollowingDiagramNodes();
}
public void CollapseAllNodes() => DiagramViewportViewModel.CollapseAllDiagramNodes();