/// <summary>
/// The implementation of VsShell.ISelectionContainer.GetObjects in
/// ModelingWindowPane calls either GetSelectedObjects() or GetAllObjects()
/// - base calls to ModelingWindowPane
/// </summary>
/// <returns></returns>
protected override void GetSelectedObjects(uint count, object[] objects)
{
// call the base class version first; objects will be populated with a
// collection of DSL ModelElements
base.GetSelectedObjects(count, objects);
if (IsArtifactDesignerSafe() == false)
{
if (EdmUtils.ShouldShowByRefDebugHelpers())
{
if (Context != null)
{
var artifact = EditingContextManager.GetArtifact(Context) as EntityDesignArtifact;
if (artifact != null)
{
// Show at least the EFEntityModelDescriptor so we can see the by-reference property extensions
// for the hydrated model
var descriptor =
(ObjectDescriptor)TypeDescriptor.CreateInstance(null, typeof(EFEntityModelDescriptor), null, null);
descriptor.Initialize(artifact.ConceptualModel, Context, true);
objects[0] = descriptor;
}
}
}
else
{
for (var i = 0; i < objects.Length; i++)
{
objects[i] = null;
}
}
}
// only show properties for single selection
else
{
// now change this into an array of our item descriptors.
var selectedModelObjects = ConvertDslModelElementArrayToItemDescriptors(objects, false);
// if there are more than 1 selected object, convert the item descriptors to linked-item-descriptors.
// This is so that property update can be done in 1 transaction.
if (selectedModelObjects.Count > 1)
{
var tempSelectedModelObjects = new ArrayList();
var contextItem = new LinkedDescriptorContextItem();
foreach (var customTypeDescriptor in selectedModelObjects.ToArray().OfType <ICustomTypeDescriptor>())
{
tempSelectedModelObjects.Add(new LinkedPropertyTypeDescriptor(customTypeDescriptor, contextItem));
}
selectedModelObjects = tempSelectedModelObjects;
}
// if the lengths are not the same, then there are items (like compartments)
// that are being selected, so don't change the object array
if (objects.Length == selectedModelObjects.Count)
{
selectedModelObjects.CopyTo(objects, 0);
}
}
}
private bool IsArtifactDesignerAndEditSafe()
{
var artifact = EditingContextManager.GetArtifact(Context) as EntityDesignArtifact;
if (artifact != null)
{
return(IsArtifactDesignerSafe(artifact) && artifact.IsDesignerSafeAndEditSafe());
}
else
{
return(false);
}
}
private bool IsArtifactDesignerSafe()
{
var artifact = EditingContextManager.GetArtifact(Context);
// artifact may be null if the editing context has been disposed.
if (artifact != null)
{
return(IsArtifactDesignerSafe(artifact));
}
else
{
// No artifact. This should never be, but return false just to be safe.
return(false);
}
}
/// <summary>
/// This method reads the .diagram file and makes sure that shapes exist for every item
/// in the .diagram file.
/// </summary>
internal static void ReloadDiagram(EntityDesignerViewModel viewModel)
{
var diagram = viewModel.GetDiagram();
if (diagram == null)
{
// Empty DSL diagram
return;
}
diagram.ResetWatermark(diagram.ActiveDiagramView);
// get our artifact
var artifact = EditingContextManager.GetArtifact(viewModel.EditingContext);
Debug.Assert(artifact != null);
if (!artifact.IsDesignerSafe)
{
return;
}
var diagramModel = viewModel.ModelXRef.GetExisting(diagram) as DesignerModel.Diagram;
if (diagramModel != null)
{
// ensure that we still have all of the parts we need to re-translate from the Model
EntityModelToDslModelTranslatorStrategy.TranslateDiagram(diagram, diagramModel);
}
else
{
// this path will usually only happen if an UMFDB extension has deleted the diagram node
// since we don't have a diagram anymore, lay it all out and create a new one
if (diagram.ModelElement.EntityTypes.Count < EntityDesignerDiagram.IMPLICIT_AUTO_LAYOUT_CEILING)
{
diagram.AutoLayoutDiagram();
}
EntityModelToDslModelTranslatorStrategy.CreateDefaultDiagram(viewModel.EditingContext, diagram);
}
// remove "Select All" selection
if (diagram.ActiveDiagramView != null)
{
diagram.ActiveDiagramView.Selection.Set(new DiagramItem(diagram));
}
}
protected override int LoadDocData(string fileName, bool isReload)
{
EntityDesignerViewModel.EntityShapeLocationSeed = 0;
var ret = base.LoadDocData(fileName, isReload);
if (UndoManager != null)
{
// Set the buffer's IOleUndoManager on XmlModelProvider, so each time a Tx Commits using XmlStore, an UndoUnit will be
// pushed onto the stack. This is currently neccessary if you want XmlEditor to fire UndoRedoCompleted Event.
var artifact = EditingContextManager.GetArtifact(EditingContext);
Debug.Assert(artifact != null, "artifact should not be null");
if (artifact != null)
{
var xmlModelProvider = artifact.XmlModelProvider as VSXmlModelProvider;
Debug.Assert(xmlModelProvider != null, "Unexpected xml model provider type is being used with VS implementation");
if (xmlModelProvider != null)
{
// Attempt to get the undo manager from the buffer and disable it.
// This is because this undo manager is different from the undo manager that is used by the Entity Designer (ParentUndoManager)
// In linked transactions this can cause a problem since there are two undo managers that are getting rolled back, and the
// XML Model ends up thinking the parse tree is out of sync with the buffer. We should not have to explicitly roll back the buffer
// since modifications from our undo manager wrap XML model parse tree modifications, which when rolled back will be committed
// to the buffer.
IOleUndoManager bufferUndoMgr;
var hr = ((VSTextManagerInterop.IVsTextBuffer)VsBuffer).GetUndoManager(out bufferUndoMgr);
Debug.Assert(bufferUndoMgr != null, "Couldn't find the buffer undo manager. Undo/Redo will be disabled");
if (NativeMethods.Succeeded(hr) && bufferUndoMgr != null)
{
xmlModelProvider.UndoManager = new ParentUndoManager(VSUndoManager);
bufferUndoMgr.DiscardFrom(null);
bufferUndoMgr.Enable(0);
}
Store.UndoManager.UndoState = UndoState.Disabled;
}
}
}
return(ret);
}
internal override void SaveModelAndDiagram(
SerializationResult serializationResult, EntityDesignerViewModel modelRoot, string modelFileName, EntityDesignerDiagram diagram,
string diagramFileName, Encoding encoding, bool writeOptionalPropertiesWithDefaultValue)
{
// only save the model
base.SaveModel(serializationResult, modelRoot, modelFileName, encoding, writeOptionalPropertiesWithDefaultValue);
if (!serializationResult.Failed)
{
// flip our dirty bit (as long as we aren't trying to save the auto-recovery backup file)
var artifact = EditingContextManager.GetArtifact(modelRoot.EditingContext);
Debug.Assert(artifact != null, "Failed to get a valid EFArtifact from the context");
IEntityDesignDocData docData = null;
var fileName = String.Empty;
if (artifact != null)
{
fileName = artifact.Uri.LocalPath;
}
docData = VSHelpers.GetDocData(PackageManager.Package, fileName) as IEntityDesignDocData;
Debug.Assert(docData != null, "Couldn't locate our DocData");
if (artifact != null &&
docData != null &&
!string.Equals(docData.BackupFileName, modelFileName, StringComparison.OrdinalIgnoreCase))
{
artifact.IsDirty = false;
}
// SaveDiagram file if the file exists
// TODO: What happened if saving diagram file failed? Should we rollback the model file?
var diagramDocData =
VSHelpers.GetDocData(PackageManager.Package, fileName + EntityDesignArtifact.ExtensionDiagram) as XmlModelDocData;
if (diagramDocData != null)
{
int saveIsCancelled;
diagramDocData.SaveDocData(VSSAVEFLAGS.VSSAVE_SilentSave, out diagramFileName, out saveIsCancelled);
}
}
}
internal override MemoryStream InternalSaveModel(
SerializationResult serializationResult, EntityDesignerViewModel modelRoot, string fileName, Encoding encoding,
bool writeOptionalPropertiesWithDefaultValue)
{
IEntityDesignDocData docData = null;
MemoryStream stream = null;
Debug.Assert(modelRoot.EditingContext != null, "Designer model root has a null EditingContext");
if (modelRoot.EditingContext != null)
{
// find our doc data; don't use the passed in fileName as this will be the new name
// during a SaveAs operation
var artifact = EditingContextManager.GetArtifact(modelRoot.EditingContext);
if (artifact != null)
{
docData = VSHelpers.GetDocData(PackageManager.Package, artifact.Uri.LocalPath) as IEntityDesignDocData;
}
Debug.Assert(docData != null, "Couldn't locate our DocData");
if (docData != null)
{
var text = docData.GetBufferTextForSaving();
if (!string.IsNullOrEmpty(text))
{
stream = FileUtils.StringToStream(text, encoding) as MemoryStream;
}
}
}
// if we don't have a stream, then we couldn't serialize for some reason
if (stream == null)
{
serializationResult.Failed = true;
}
return(stream);
}
/// <summary>
/// This method loads the DSL view model with the items in the artifact's C-Model.
/// </summary>
internal void ReloadModel(EntityDesignerViewModel viewModel)
{
var diagram = viewModel.GetDiagram();
if (diagram == null)
{
// empty DSL diagram
return;
}
// get our artifact
var artifact = EditingContextManager.GetArtifact(viewModel.EditingContext) as EntityDesignArtifact;
Debug.Assert(artifact != null);
var serializationResult = new SerializationResult();
var serializationContext = new SerializationContext(GetDirectory(viewModel.Store), artifact.Uri.LocalPath, serializationResult);
var transactionContext = new TransactionContext();
transactionContext.Add(SerializationContext.TransactionContextKey, serializationContext);
var workaroundFixSerializationTransactionValue = false;
if (viewModel.Store.PropertyBag.ContainsKey("WorkaroundFixSerializationTransaction"))
{
workaroundFixSerializationTransactionValue = (bool)viewModel.Store.PropertyBag["WorkaroundFixSerializationTransaction"];
}
try
{
// To fix performance issue during reload, we turn-off layout during "serialization".
viewModel.Store.PropertyBag["WorkaroundFixSerializationTransaction"] = true;
using (var t = viewModel.Store.TransactionManager.BeginTransaction("ReloadModel", true, transactionContext))
{
if (artifact.ConceptualModel() == null)
{
return;
}
DesignerModel.Diagram diagramModel = null;
// If DiagramId is not string empty, try to get the diagram from the artifact.
// There is a situation where we could not find the diagram given an ID (for example: EDMX Model's Diagram that is created by VS before SQL 11;
// In that case, we assign temporary ID to the diagram and a new ID will be generated every time the model is reloaded.)
// We could safely choose the first diagram since multiple diagrams feature didn't exist in VS prior to SQL11 release.
if (!string.IsNullOrEmpty(diagram.DiagramId))
{
diagramModel = artifact.DesignerInfo.Diagrams.GetDiagram(diagram.DiagramId);
}
if (diagramModel == null)
{
diagramModel = artifact.DesignerInfo.Diagrams.FirstDiagram;
}
if (diagramModel != null)
{
// Re-establish the xref between Escher conceptual model and DSL root model.
// and between Escher Diagram model and DSL diagram model.
Debug.Assert(viewModel.ModelXRef != null, "Why ModelXRef is null?");
if (viewModel.ModelXRef != null)
{
viewModel.ModelXRef.Add(artifact.ConceptualModel(), viewModel, viewModel.EditingContext);
viewModel.ModelXRef.Add(diagramModel, diagram, viewModel.EditingContext);
ModelTranslatorContextItem.GetEntityModelTranslator(viewModel.EditingContext)
.TranslateModelToDslModel(diagramModel, viewModel.Partition);
}
}
if (t.IsActive)
{
t.Commit();
}
}
}
finally
{
viewModel.Store.PropertyBag["WorkaroundFixSerializationTransaction"] = workaroundFixSerializationTransactionValue;
}
}
