///--------------------------------------------------------------------------------
/// <summary>This method removes an entity from the view model.</summary>
///
/// <param name="diagramEntity">The diagram entity to remove.</param>
///--------------------------------------------------------------------------------
public void RemoveEntity(DiagramEntityViewModel diagramEntity, bool isDeleted = false)
{
// remove diagram entity
DiagramEntities.Remove(diagramEntity);
Items.Remove(diagramEntity);
//diagramEntity.Dispose();
ClearSelectedItems();
if (isDeleted == false)
{
EntityViewModel entity = EntitiesRemoved.Find("EntityID", diagramEntity.EntityViewModel.EntityID);
if (entity != null)
{
EntitiesRemoved.Remove(entity);
Entities.Add(entity);
Entities.Sort("DisplayName", SortDirection.Ascending);
}
}
IList <DiagramRelationshipViewModel> relationshipsToRemove = new List <DiagramRelationshipViewModel>();
foreach (DiagramRelationshipViewModel diagramRelationship in DiagramRelationships)
{
if (diagramRelationship.SinkDiagramEntityViewModel.EntityID == diagramEntity.EntityID || diagramRelationship.SourceDiagramEntityViewModel.EntityID == diagramEntity.EntityID)
{
relationshipsToRemove.Add(diagramRelationship);
}
}
foreach (DiagramRelationshipViewModel diagramRelationship in relationshipsToRemove)
{
DiagramRelationships.Remove(diagramRelationship);
Items.Remove(diagramRelationship);
}
Refresh(false);
}
///--------------------------------------------------------------------------------
/// <summary>This method creates an entity and adds to the view model.</summary>
///
/// <param name="entity">The entity to add.</param>
/// <param name="position">The desired position to place the entity.</param>
///--------------------------------------------------------------------------------
public DiagramEntityViewModel CreateEntity(EntityViewModel entity, Point position)
{
// create diagram entity and add to solution diagram
DiagramEntity dropDiagram = new DiagramEntity();
dropDiagram.DiagramEntityID = Guid.NewGuid();
DiagramEntityViewModel diagramEntity = new DiagramEntityViewModel(dropDiagram, entity, this);
diagramEntity.X = Math.Max(0, position.X);
diagramEntity.Y = Math.Max(0, position.Y);
diagramEntity.Width = Double.NaN;
diagramEntity.Height = Double.NaN;
DiagramEntities.Add(diagramEntity);
Items.Add(diagramEntity);
ClearSelectedItems();
diagramEntity.IsSelected = true;
diagramEntity.ZIndex = ++ZIndex;
// add to diagram entites to add list
ItemsToAdd.Add(diagramEntity);
Refresh(false);
return(diagramEntity);
}
///--------------------------------------------------------------------------------
/// <summary>This method adds an entity to the view model.</summary>
///
/// <param name="entity">The entity to add.</param>
/// <param name="position">The desired position to place the entity.</param>
///--------------------------------------------------------------------------------
public DiagramEntityViewModel AddEntity(EntityViewModel entity, Point position, bool isNewEntity = false)
{
DiagramEntity dropDiagram = new DiagramEntity();
dropDiagram.DiagramID = DiagramID;
dropDiagram.DiagramEntityID = Guid.NewGuid();
EntityViewModel entityView = entity;
DiagramEntityViewModel diagramEntity = new DiagramEntityViewModel(dropDiagram, entityView, this);
diagramEntity.X = Math.Max(0, position.X);
diagramEntity.Y = Math.Max(0, position.Y);
diagramEntity.Width = Double.NaN;
diagramEntity.Height = Double.NaN;
diagramEntity.Updated += new EventHandler(Children_Updated);
diagramEntity.DiagramEntity.Entity = diagramEntity.EntityViewModel.Entity;
diagramEntity.ResetModified(false);
diagramEntity.EditDiagramEntity.ResetModified(false);
if (isNewEntity == true)
{
AddDiagramEntity(diagramEntity);
}
else
{
DiagramEntities.Add(diagramEntity);
Items.Add(diagramEntity);
}
ClearSelectedItems();
diagramEntity.IsSelected = true;
diagramEntity.ZIndex = ++ZIndex;
Entities.Remove(entity);
EntitiesRemoved.Add(entity);
diagramEntity.PositionChanged += new EventHandler(diagramEntity_PositionChanged);
AddRelationships(diagramEntity);
return(diagramEntity);
}
///--------------------------------------------------------------------------------
/// <summary>This method loads a solution into the view model.</summary>
///
/// <param name="solution">The solution to load.</param>
///--------------------------------------------------------------------------------
public void LoadDiagram(Diagram solutionDiagram)
{
try
{
// attach the solution diagram
Diagram = solutionDiagram;
ItemID = Diagram.DiagramID;
// attach diagram entities
DiagramRelationships.Clear();
DiagramEntities.Clear();
if (Entities.Count >= 0)
{
IList <DiagramEntity> missingEntities = new List <DiagramEntity>();
foreach (DiagramEntity entity in solutionDiagram.DiagramEntityList)
{
if (entity.Entity == null)
{
entity.Entity = Solution.EntityList.FindByID(entity.EntityID);
}
if (entity.Entity != null)
{
EntityViewModel entityView = Entities.Find("EntityID", entity.EntityID);
if (entityView == null)
{
// entity may be removed from Entities already
Entity foundEntity = Solution.EntityList.FindByID(entity.EntityID);
if (foundEntity != null)
{
entityView = new EntityViewModel(foundEntity, Solution, true);
}
}
if (entityView != null)
{
Point position = new Point();
position.X = entity.PositionX;
position.Y = entity.PositionY;
AddEntity(entityView, position, false);
}
else
{
missingEntities.Add(entity);
}
}
else
{
missingEntities.Add(entity);
}
}
// remove missing entities
if (missingEntities.Count > 0)
{
foreach (DiagramEntity entity in missingEntities)
{
solutionDiagram.DiagramEntityList.Remove(entity);
Solution.ResetModified(true);
}
ShowIssue(DisplayValues.Issue_MissingDiagramEntities);
}
}
Items.Clear();
foreach (var item in DiagramEntities)
{
Items.Add(item);
}
foreach (var item in DiagramRelationships)
{
Items.Add(item);
}
Refresh(false);
ResetModified(false);
}
catch (ApplicationException ex)
{
ShowException(ex);
}
catch (Exception ex)
{
ShowException(ex);
}
}
