// This supports loading objects instead of xaml into the designer
public void Load(object instance)
{
if (isLoaded)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.WorkflowDesignerLoadShouldBeCalledOnlyOnce));
}
isLoaded = true;
if (instance == null)
{
throw FxTrace.Exception.AsError(new ArgumentNullException("instance"));
}
DesignerConfigurationService configurationService = this.context.Services.GetService <DesignerConfigurationService>();
configurationService.ApplyDefaultPreference();
// Because we want AutoConnect/AutoSplit to be on even in Dev10 if PU1 is installed.
// But we cannot know whether PU1 is installed or not, we decide to enable these 2 features for all Dev10.
if (configurationService.WorkflowDesignerHostId == WorkflowDesignerHostId.Dev10)
{
configurationService.AutoConnectEnabled = true;
configurationService.AutoSplitEnabled = true;
}
configurationService.IsWorkflowLoaded = true;
configurationService.Validate();
if (this.PreviewLoad != null)
{
this.PreviewLoad(this, new PreviewLoadEventArgs(instance, this.context));
}
if (configurationService.TargetFrameworkName.IsLessThan45())
{
TargetFrameworkPropertyFilter.FilterOut45Properties();
}
modelTreeManager = new ModelTreeManager(this.context);
modelTreeManager.Load(instance);
this.context.Services.Publish(typeof(ModelTreeManager), modelTreeManager);
viewManager = GetViewManager(this.modelTreeManager.Root);
this.context.Services.Publish <ModelSearchService>(this.ModelSearchService);
view.Children.Add((UIElement)viewManager.View);
modelTreeManager.EditingScopeCompleted += new EventHandler <EditingScopeEventArgs>(OnEditingScopeCompleted);
this.view.Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle,
new Action(() => { this.perfEventProvider.WorkflowDesignerApplicationIdleAfterLoad(); }));
//Subscribe to the ViewStateChanged event of ViewStateService to show document dirty. It would be published in the call to GetViewManager().
WorkflowViewStateService wfViewStateService = this.Context.Services.GetService(typeof(ViewStateService)) as WorkflowViewStateService;
if (wfViewStateService != null)
{
wfViewStateService.UndoableViewStateChanged += new ViewStateChangedEventHandler(OnViewStateChanged);
}
this.isModelChanged = false;
}
private static List <object> GetFromClipboard(out List <object> metaData, EditingContext editingContext)
{
Fx.Assert(editingContext != null, "editingContext should not be null");
MultiTargetingSupportService multiTargetingService = editingContext.Services.GetService <IMultiTargetingSupportService>() as MultiTargetingSupportService;
DesignerConfigurationService config = editingContext.Services.GetService <DesignerConfigurationService>();
DataObject dataObject = RetriableClipboard.GetDataObject() as DataObject;
List <object> workflowData = null;
metaData = null;
if (dataObject != null)
{
if (dataObject.GetDataPresent(WorkflowClipboardFormat))
{
bool isCopyingFromHigherFrameworkToLowerFramework = false;
if (multiTargetingService != null && config != null)
{
isCopyingFromHigherFrameworkToLowerFramework = GetTargetFrameworkFromClipboard(dataObject).Version > config.TargetFrameworkName.Version;
}
string clipBoardString = (string)TryGetData(dataObject, WorkflowClipboardFormat);
using (StringReader stringReader = new StringReader(clipBoardString))
{
try
{
XamlSchemaContext schemaContext;
if (isCopyingFromHigherFrameworkToLowerFramework)
{
schemaContext = new MultiTargetingXamlSchemaContext(multiTargetingService);
}
else
{
schemaContext = new XamlSchemaContext();
}
using (XamlXmlReader xamlXmlReader = new XamlXmlReader(stringReader, schemaContext))
{
ClipboardData clipboardData = (ClipboardData)XamlServices.Load(xamlXmlReader);
metaData = clipboardData.Metadata;
workflowData = clipboardData.Data;
}
}
catch (Exception e)
{
Trace.WriteLine(e.Message);
}
}
}
else if (dataObject.GetDataPresent(WorkflowCallbackClipboardFormat))
{
ClipboardData localData = (ClipboardData)TryGetData(dataObject, WorkflowCallbackClipboardFormat);
metaData = null;
workflowData = localData.Data;
workflowData.Add(CutCopyPasteHelper.workflowCallbackContext);
}
}
return(workflowData);
}
public void Load(string fileName)
{
if (string.IsNullOrEmpty(fileName))
{
throw FxTrace.Exception.AsError(new ArgumentNullException("fileName"));
}
DesignerConfigurationService service = this.Context.Services.GetService <DesignerConfigurationService>();
service.SetDefaultOfLoadingFromUntrustedSourceEnabled();
if (!service.LoadingFromUntrustedSourceEnabled && !IsFromUnrestrictedPath(fileName))
{
throw FxTrace.Exception.AsError(new SecurityException(string.Format(CultureInfo.CurrentUICulture, SR.UntrustedSourceDetected, fileName)));
}
try
{
IDocumentPersistenceService documentPersistenceService = this.Context.Services.GetService <IDocumentPersistenceService>();
if (documentPersistenceService != null)
{
this.Load(documentPersistenceService.Load(fileName));
}
else
{
using (StreamReader fileStream = new StreamReader(fileName))
{
this.loadedFile = fileName;
WorkflowFileItem fileItem = new WorkflowFileItem();
fileItem.LoadedFile = fileName;
this.context.Items.SetValue(fileItem);
this.Text = fileStream.ReadToEnd();
this.Load();
}
}
}
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
else
{
this.Context.Items.SetValue(new ErrorItem()
{
Message = e.Message, Details = e.ToString()
});
}
}
if (!this.IsInErrorState())
{
this.lastWorkflowSymbol = GetAttachedWorkflowSymbol();
if (this.debuggerService != null)
{
this.debuggerService.InvalidateSourceLocationMapping(fileName);
}
}
}
public static bool IsBackgroundValidationEnabled(EditingContext editingContext)
{
Fx.Assert(editingContext != null, "editingContext should not be null");
DesignerConfigurationService config = editingContext.Services.GetService <DesignerConfigurationService>();
if (config != null)
{
return(config.BackgroundValidationEnabled);
}
return(false);
}
static internal FrameworkName GetTargetFramework(EditingContext context)
{
if (context != null)
{
DesignerConfigurationService designerConfigurationService = context.Services.GetService <DesignerConfigurationService>();
if (designerConfigurationService != null)
{
return(designerConfigurationService.TargetFrameworkName);
}
}
return(DesignerConfigurationService.DefaultTargetFrameworkName);
}
static public void PreviewLoadRoot(object sender, WorkflowDesigner.PreviewLoadEventArgs args)
{
object root = args.Instance;
DesignerConfigurationService configService = args.Context.Services.GetService <DesignerConfigurationService>();
if (configService != null && configService.NamespaceConversionEnabled)
{
ConvertNamespaces(root, args.Context);
}
if (root.GetType() == WorkflowServiceType)
{
args.Context.Services.Subscribe <ModelTreeManager>(manager => manager.Root.PropertyChanged += new PropertyChangedEventHandler(OnRootPropertyChanged));
}
TypeDescriptor.AddProvider(new RootModelTypeDescriptionProvider(root), root);
}
public WorkflowDesigner()
{
// create our perf trace provider first
this.perfEventProvider = new DesignerPerfEventProvider();
this.idManager = new ViewStateIdManager();
this.context = new EditingContext();
this.ModelSearchService = new ModelSearchServiceImpl(this);
this.context.Items.SetValue(new ReadOnlyState {
IsReadOnly = false
});
this.view = new Grid();
this.view.Focusable = false;
//add the resource dictionary to application resource so every component could reference it
if (Application.Current == null)
{
//create an application if it doesn't exist, make sure it will not shutdown after windows being shut down
Application app = new Application();
app.ShutdownMode = ShutdownMode.OnExplicitShutdown;
}
Fx.Assert(Application.Current != null, "Application and resources must be there");
Application.Current.Resources.MergedDictionaries.Add(WorkflowDesignerColors.FontAndColorResources);
Application.Current.Resources.MergedDictionaries.Add(WorkflowDesignerIcons.IconResourceDictionary);
AttachedPropertiesService propertiesService = new AttachedPropertiesService();
this.context.Services.Publish(typeof(AttachedPropertiesService), propertiesService);
undoEngine = new UndoEngine(context);
this.context.Services.Publish(typeof(UndoEngine), undoEngine);
undoEngine.UndoCompleted += new EventHandler <UndoUnitEventArgs>(OnUndoCompleted);
this.context.Services.Publish <ValidationService>(this.ValidationService);
this.context.Services.Publish <ObjectReferenceService>(this.ObjectReferenceService);
this.context.Services.Publish <DesignerPerfEventProvider>(this.perfEventProvider);
this.context.Services.Publish <FeatureManager>(new FeatureManager(this.context));
this.context.Services.Publish <DesignerConfigurationService>(new DesignerConfigurationService());
if (!LocalAppContextSwitches.UseLegacyAccessibilityFeatures)
{
// Keeps track of a dictionary of session objects on current Workflow Designer.
// The initial purpose is to pass the focused VisualBasicEditor from NetFx to VS.
this.context.Services.Publish <Dictionary <string, object> >(new Dictionary <string, object>());
}
this.context.Services.Subscribe <ICommandService>((s) =>
{
const string addinTypeName = "Microsoft.VisualStudio.Activities.AddIn.WorkflowDesignerAddIn";
if (s != null && s.GetType().FullName.Equals(addinTypeName))
{
DesignerConfigurationService service = this.context.Services.GetService <DesignerConfigurationService>();
if (service != null)
{
service.WorkflowDesignerHostId = WorkflowDesignerHostId.Dev10;
}
}
});
this.context.Services.Subscribe <IVSSqmService>((service) =>
{
const string serviceTypeName = "Microsoft.VisualStudio.Activities.AddIn.VSSqmService";
if (service != null && service.GetType().FullName.Equals(serviceTypeName))
{
DesignerConfigurationService configurationService = this.context.Services.GetService <DesignerConfigurationService>();
if (configurationService != null)
{
configurationService.WorkflowDesignerHostId = WorkflowDesignerHostId.Dev11;
}
}
});
this.Context.Items.Subscribe <ErrorItem>(delegate(ErrorItem errorItem)
{
ErrorView errorView = new ErrorView();
errorView.Message = errorItem.Message;
errorView.Details = errorItem.Details;
errorView.Context = this.Context;
// Clear views
this.view.Children.Clear();
this.view.Children.Add(errorView);
if (this.outlineView != null)
{
this.outlineView.Children.Clear();
}
}
);
this.context.Items.Subscribe <ReadOnlyState>(new SubscribeContextCallback <ReadOnlyState>(OnReadonlyStateChanged));
this.context.Services.Subscribe <IXamlLoadErrorService>(s => this.xamlLoadErrorService = s);
this.PreviewLoad += NamespaceSettingsHandler.PreviewLoadRoot;
this.view.Loaded += (s, e) =>
{
//when view is loaded, check if user did provide his own WindowHelperService - if not, provide a default one
if (!this.context.Services.Contains <WindowHelperService>())
{
IntPtr hWND = IntPtr.Zero;
Window ownerWindow = Window.GetWindow(this.view);
if (null != ownerWindow)
{
WindowInteropHelper helper = new WindowInteropHelper(ownerWindow);
hWND = helper.Handle;
}
this.Context.Services.Publish <WindowHelperService>(new WindowHelperService(hWND));
}
WindowHelperService whs = this.context.Services.GetService <WindowHelperService>();
whs.View = this.view;
//check if workflow command extension item is available - if not, provide default one
if (!this.context.Items.Contains <WorkflowCommandExtensionItem>())
{
WorkflowCommandExtensionItem item = new WorkflowCommandExtensionItem(new DefaultCommandExtensionCallback());
this.context.Items.SetValue(item);
}
ComponentDispatcher.EnterThreadModal += new EventHandler(ComponentDispatcher_EnterThreadModal);
ComponentDispatcher.LeaveThreadModal += new EventHandler(ComponentDispatcher_LeaveThreadModal);
};
this.view.Unloaded += (s, e) =>
{
ComponentDispatcher.EnterThreadModal -= new EventHandler(ComponentDispatcher_EnterThreadModal);
ComponentDispatcher.LeaveThreadModal -= new EventHandler(ComponentDispatcher_LeaveThreadModal);
};
this.view.IsKeyboardFocusWithinChanged += (s, e) =>
{
// The ModelTreeManager is null when there is an active ErrorItem.
// We have nothing to write to text in this case.
if (this.modelTreeManager != null && (bool)e.NewValue == false)
{
if ((FocusManager.GetFocusedElement(this.view) as TextBox) != null)
{
FocusManager.SetFocusedElement(this.view, null);
this.NotifyModelChanged();
}
}
};
}
