public Connector GetBestConnector(EntityDiagramControl otherControl, bool isSinkConnector)
{
DiagramEntityViewModel view = DataContext as DiagramEntityViewModel;
DiagramEntityViewModel otherView = otherControl.DataContext as DiagramEntityViewModel;
if (view != null && otherView != null)
{
double deltaX = otherView.X - view.X;
double deltaY = otherView.Y - view.Y;
bool deltaYBigger = Math.Abs(deltaY) > Math.Abs(deltaX);
if (isSinkConnector == true)
{
// weight the sink connector towards the left/right side
deltaYBigger = Math.Abs(deltaY) > 2 * Math.Abs(deltaX);
}
if (deltaYBigger == true)
{
// item is to the top or bottom
if (deltaY > 0)
{
// item is to the bottom
return(GetConnector(BottomPanel, otherView.X, otherView.Y));
}
else
{
// item is to the top
return(GetConnector(TopPanel, otherView.X, otherView.Y));
}
}
else
{
// item is to the left or right
if (deltaX > 0)
{
// item is to the right
return(GetConnector(RightPanel, otherView.X, otherView.Y));
}
else
{
// item is to the left
return(GetConnector(LeftPanel, otherView.X, otherView.Y));
}
}
}
return(GetConnector(LeftPanel, otherView.X, otherView.Y));
}
public void HandleCustomDrop()
{
// handle "drop" of relationship in custom drag/drop approach with arc drawing adorner
if (DragItem is DiagramRelationshipViewModel)
{
DiagramViewModel diagramView = DataContext as DiagramViewModel;
DiagramEntityViewModel diagramEntityView = GetMouseOverEntity();
DiagramRelationshipViewModel dragRelationship = DragItem as DiagramRelationshipViewModel;
Point currentPosition = MouseUtilities.GetMousePosition(this);
if (dragRelationship != null && diagramEntityView != null)
{
dragRelationship.SinkDiagramEntityViewModel = diagramEntityView;
dragRelationship.Diagram = diagramView;
dialog = new Window();
dialog.Height = 450 * UserSettingsHelper.Instance.ControlSize;
dialog.Width = 650 * UserSettingsHelper.Instance.ControlSize;
dialog.Left = Math.Max(currentPosition.X, 20);
dialog.Top = Math.Max(currentPosition.Y, 20);
dialog.Content = new RelationshipDialogControl();
Relationship newRelationship = new Relationship();
newRelationship.RelationshipID = Guid.NewGuid();
newRelationship.Solution = dragRelationship.Solution;
newRelationship.ReferencedEntity = dragRelationship.SinkDiagramEntityViewModel.DiagramEntity.Entity;
newRelationship.Entity = dragRelationship.SourceDiagramEntityViewModel.DiagramEntity.Entity;
RelationshipViewModel newRelationshipView = new RelationshipViewModel(newRelationship, dragRelationship.Solution);
dialog.DataContext = newRelationshipView;
dialog.Title = newRelationshipView.Title;
newRelationshipView.RequestClose += new EventHandler(Item_RequestClose);
dialog.ShowDialog();
if (newRelationshipView.IsOK == true)
{
dragRelationship.RelationshipViewModel = newRelationshipView;
diagramView.CreateRelationship(dragRelationship);
}
dialog.Close();
dialog = null;
}
}
IsDragging = false;
DragItem = null;
}
protected override void OnMouseUp(MouseButtonEventArgs e)
{
if (HitConnector != null)
{
DiagramEntityViewModel sourceView = sourceConnector.DataContext as DiagramEntityViewModel;
DiagramEntityViewModel sinkView = HitConnector.DataContext as DiagramEntityViewModel;
if (DiagramViewModel != null && sourceView != null && sinkView != null)
{
Relationship relationship = new Relationship();
relationship.RelationshipID = Guid.NewGuid();
relationship.EntityID = sourceView.EntityID;
relationship.ReferencedEntityID = sinkView.EntityID;
// TODO: bring up dialog to set up new entity relationship properties
RelationshipViewModel relationshipViewModel = new RelationshipViewModel(relationship, sourceView.Solution);
DiagramRelationshipViewModel dropDiagramRelationship = new DiagramRelationshipViewModel(sourceView, sinkView, sourceView.Diagram, relationshipViewModel);
dropDiagramRelationship.ZIndex = 0;
DiagramViewModel.DiagramRelationships.Add(dropDiagramRelationship);
DiagramViewModel.ClearSelectedItems();
dropDiagramRelationship.IsSelected = true;
DiagramViewModel.Refresh(true);
}
}
if (HitDesignerItem != null)
{
this.HitDesignerItem.IsDragConnectionOver = false;
}
if (this.IsMouseCaptured)
{
this.ReleaseMouseCapture();
}
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this.designerCanvas);
if (adornerLayer != null)
{
adornerLayer.Remove(this);
}
}
///--------------------------------------------------------------------------------
/// <summary>This method handles the execution of the new command.</summary>
///
/// <param name="sender">The event sender.</param>
/// <param name="e">The event arguments.</param>
///--------------------------------------------------------------------------------
private void NewExecuted(object sender, ExecutedRoutedEventArgs e)
{
Point currentPosition = MouseUtilities.GetMousePosition(this);
PropertiesViewModel items = DataContext as PropertiesViewModel;
EntityDiagramControl diagram = VisualItemHelper.VisualUpwardSearch <EntityDiagramControl>(this) as EntityDiagramControl;
DiagramEntityViewModel diagramEntityView = diagram.DataContext as DiagramEntityViewModel;
if (items != null && diagramEntityView != null)
{
dialog = new Window();
dialog.Height = 450 * UserSettingsHelper.Instance.ControlSize;
dialog.Width = 400 * UserSettingsHelper.Instance.ControlSize;
dialog.Left = Math.Max(currentPosition.X, 20);
dialog.Top = Math.Max(currentPosition.Y, 20);
dialog.Content = new PropertyDialogControl();
Property newItem = new Property();
newItem.PropertyID = Guid.NewGuid();
newItem.Solution = items.Solution;
newItem.Entity = items.Entity;
//newItem.ReferenceEntity = diagramEntityView.DiagramEntity.Entity;
PropertyViewModel newItemView = new PropertyViewModel(newItem, items.Solution);
newItemView.IsFreeDialog = true;
dialog.DataContext = newItemView;
dialog.Title = newItemView.Title;
newItemView.RequestClose += new EventHandler(Item_RequestClose);
#region protected
dialog.Width = 600 * UserSettingsHelper.Instance.ControlSize;
#endregion protected
dialog.ShowDialog();
if (newItemView.IsOK == true)
{
items.AddProperty(newItemView);
}
dialog.Close();
dialog = null;
e.Handled = true;
return;
}
}
protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
Point currentPosition = MouseUtilities.GetMousePosition(this);
DiagramViewModel diagramView = ParentCanvas.DataContext as DiagramViewModel;
DiagramEntityViewModel diagramEntityView = DataContext as DiagramEntityViewModel;
if (diagramView != null && diagramEntityView != null)
{
// try drop as diagram relationship
DiagramRelationshipViewModel dragRelationship = e.Data.GetData(typeof(DiagramRelationshipViewModel)) as DiagramRelationshipViewModel;
if (dragRelationship != null)
{
dragRelationship.SinkDiagramEntityViewModel = diagramEntityView;
dragRelationship.Diagram = diagramView;
dialog = new Window();
dialog.Height = 450 * UserSettingsHelper.Instance.ControlSize;
dialog.Width = 650 * UserSettingsHelper.Instance.ControlSize;
dialog.Left = Math.Max(currentPosition.X, 20);
dialog.Top = Math.Max(currentPosition.Y, 20);
dialog.Content = new RelationshipDialogControl();
Relationship newRelationship = new Relationship();
newRelationship.RelationshipID = Guid.NewGuid();
newRelationship.Solution = dragRelationship.Solution;
newRelationship.ReferencedEntity = dragRelationship.SinkDiagramEntityViewModel.DiagramEntity.Entity;
newRelationship.Entity = dragRelationship.SourceDiagramEntityViewModel.DiagramEntity.Entity;
RelationshipViewModel newRelationshipView = new RelationshipViewModel(newRelationship, dragRelationship.Solution);
dialog.DataContext = newRelationshipView;
dialog.Title = newRelationshipView.Title;
newRelationshipView.RequestClose += new EventHandler(Item_RequestClose);
dialog.ShowDialog();
if (newRelationshipView.IsOK == true)
{
dragRelationship.RelationshipViewModel = newRelationshipView;
diagramView.CreateRelationship(dragRelationship);
}
dialog.Close();
dialog = null;
e.Handled = true;
return;
}
// try drop as collection
CollectionsViewModel dragCollections = e.Data.GetData(typeof(CollectionsViewModel)) as CollectionsViewModel;
if (dragCollections != null)
{
dialog = new Window();
dialog.Height = 450 * UserSettingsHelper.Instance.ControlSize;
dialog.Width = 400 * UserSettingsHelper.Instance.ControlSize;
dialog.Left = Math.Max(currentPosition.X, 20);
dialog.Top = Math.Max(currentPosition.Y, 20);
dialog.Content = new CollectionDialogControl();
Collection newProperty = new Collection();
newProperty.PropertyID = Guid.NewGuid();
newProperty.Solution = dragCollections.Solution;
newProperty.Entity = dragCollections.Entity;
newProperty.ReferencedEntity = diagramEntityView.DiagramEntity.Entity;
CollectionViewModel newPropertyView = new CollectionViewModel(newProperty, dragCollections.Solution);
dialog.DataContext = newPropertyView;
dialog.Title = newPropertyView.Title;
newPropertyView.RequestClose += new EventHandler(Item_RequestClose);
dialog.ShowDialog();
if (newPropertyView.IsOK == true)
{
dragCollections.AddCollection(newPropertyView);
}
dialog.Close();
dialog = null;
e.Handled = true;
return;
}
// try drop as property reference
PropertyReferencesViewModel dragPropertyReferences = e.Data.GetData(typeof(PropertyReferencesViewModel)) as PropertyReferencesViewModel;
if (dragPropertyReferences != null)
{
dialog = new Window();
dialog.Height = 450 * UserSettingsHelper.Instance.ControlSize;
dialog.Width = 400 * UserSettingsHelper.Instance.ControlSize;
dialog.Left = Math.Max(currentPosition.X, 20);
dialog.Top = Math.Max(currentPosition.Y, 20);
dialog.Content = new PropertyReferenceDialogControl();
PropertyReference newProperty = new PropertyReference();
newProperty.PropertyID = Guid.NewGuid();
newProperty.Solution = dragPropertyReferences.Solution;
newProperty.Entity = dragPropertyReferences.Entity;
PropertyReferenceViewModel newPropertyView = new PropertyReferenceViewModel(newProperty, dragPropertyReferences.Solution);
newPropertyView.ReferencedEntityID = diagramEntityView.EntityViewModel.EntityID;
newPropertyView.RefreshProperties();
dialog.DataContext = newPropertyView;
dialog.Title = newPropertyView.Title;
newPropertyView.RequestClose += new EventHandler(Item_RequestClose);
dialog.ShowDialog();
if (newPropertyView.IsOK == true)
{
dragPropertyReferences.AddPropertyReference(newPropertyView);
}
dialog.Close();
dialog = null;
e.Handled = true;
return;
}
// try drop as entity reference
EntityReferencesViewModel dragEntityReferences = e.Data.GetData(typeof(EntityReferencesViewModel)) as EntityReferencesViewModel;
if (dragEntityReferences != null)
{
dialog = new Window();
dialog.Height = 450 * UserSettingsHelper.Instance.ControlSize;
dialog.Width = 400 * UserSettingsHelper.Instance.ControlSize;
dialog.Left = Math.Max(currentPosition.X, 20);
dialog.Top = Math.Max(currentPosition.Y, 20);
dialog.Content = new EntityReferenceDialogControl();
EntityReference newProperty = new EntityReference();
newProperty.PropertyID = Guid.NewGuid();
newProperty.Solution = dragEntityReferences.Solution;
newProperty.Entity = dragEntityReferences.Entity;
newProperty.ReferencedEntity = diagramEntityView.DiagramEntity.Entity;
EntityReferenceViewModel newPropertyView = new EntityReferenceViewModel(newProperty, dragEntityReferences.Solution);
dialog.DataContext = newPropertyView;
dialog.Title = newPropertyView.Title;
newPropertyView.RequestClose += new EventHandler(Item_RequestClose);
dialog.ShowDialog();
if (newPropertyView.IsOK == true)
{
dragEntityReferences.AddEntityReference(newPropertyView);
}
dialog.Close();
dialog = null;
e.Handled = true;
return;
}
}
}