static ConnectionPoint ConnectionPointHitTest(UIElement element, Point hitPoint)
{
FreeFormPanel panel = VisualTreeUtils.FindVisualAncestor <FreeFormPanel>(element);
List <ConnectionPoint> connectionPoints = StateContainerEditor.GetConnectionPoints(element);
return(FreeFormPanel.ConnectionPointHitTest(hitPoint, connectionPoints, panel));
}
protected override void OnPreviewMouseLeftButtonDown(MouseButtonEventArgs e)
{
if (e != null && !this.Disabled)
{
this.offset = e.GetPosition(this);
this.CaptureMouse();
if (this.scope != null)
{
this.ParentStateContainerEditor.StoreShapeSizeWithUndoRecursively(this.ParentStateContainerEditor.ModelItem);
}
// Select the designer when it is being resized
WorkflowViewElement designer = this.ParentStateContainerEditor.ModelItem.View as WorkflowViewElement;
if (!designer.IsKeyboardFocusWithin)
{
// Fix 185562 - if the designer has the keyboard focus (i.e. DisplayName being edited)
// then there is no need to refocus on the designer again. That prevents the
// DisplayName editing to be group into the same EditingScope as resizing, and
// also the defaultDisplayNameReadOnlyControl from being Visible but not modified.
Keyboard.Focus(designer);
}
StateMachineDesigner stateMachineDesigner = VisualTreeUtils.FindVisualAncestor <StateMachineDesigner>(this.ParentStateContainerEditor);
stateMachineDesigner.IsResizing = true;
e.Handled = true;
}
base.OnPreviewMouseLeftButtonDown(e);
}
private void OnListBoxPreviewGotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
ListBoxItem item = VisualTreeUtils.FindVisualAncestor <ListBoxItem>(e.OriginalSource as DependencyObject);
if (item != null)
{
this.SelectedListItem = item.Content as ExpandableItemWrapper;
}
}
void OnModelItemPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "Expression")
{
Update();
}
else if (e.PropertyName == "DefaultCaseDisplayName")
{
// To fix 218600 without losing PropertyGrid focus (Bug 210326), the only workaround is to
// update the connector label manually, because FlowSwitchLink.ModelItem["DefaultCaseDisplayName"]
// is a FakeModelPropertyImpl, and would not generate a Undo unit
// (FakeModelNotifyPropertyChange.GetInverse() returns null).
// However, there is a known issue with PropertyGrid bound to a fake ModelItem. The workaround is
// to shift the focus to the FlowchartDesigner IF the keyboard focus is on the connector when the user
// calls Undo/Redo, to avoid the problem of PropertyGrid not refreshable.
FlowchartDesigner flowchartDesigner = VisualTreeUtils.FindVisualAncestor <FlowchartDesigner>(this);
Fx.Assert(null != flowchartDesigner, "flowchart designer cannot be null because FlowswitchDesigner must exist within the same visual tree ofthe parent Flowchart.");
if (null != flowchartDesigner &&
null != this.ModelItem.Properties["Default"].Value &&
this.Context.Services.GetService <UndoEngine>().IsUndoRedoInProgress)
{
// the designer is available
Connector connector = flowchartDesigner.GetLinkOnCanvas(this.ModelItem, this.ModelItem.Properties["Default"].Value, "Default");
Fx.Assert(null != connector, "Connector should not be null.");
ModelItem linkModelItem = FlowchartDesigner.GetLinkModelItem(connector);
Fx.Assert(linkModelItem is FakeModelItemImpl, "ModelItem of FlowSwitch link is fake.");
IFlowSwitchDefaultLink link = (IFlowSwitchDefaultLink)linkModelItem.GetCurrentValue();
string defaultDisplayName =
(string)this.ModelItem.Properties[FlowSwitchLabelFeature.DefaultCaseDisplayNamePropertyName].Value.GetCurrentValue();
if (link.DefaultCaseDisplayName != defaultDisplayName)
{
// the purpose of re-setting the link value during Undo/Redo is to update the FlowSwitch label
using (ModelEditingScope scope = this.ModelItem.BeginEdit(SR.FlowSwitchDefaultCaseDisplayNameEditingScopeDesc))
{
linkModelItem.Properties[FlowSwitchLabelFeature.DefaultCaseDisplayNamePropertyName].SetValue(defaultDisplayName);
link.DefaultCaseDisplayName = defaultDisplayName;
scope.Complete();
}
if (Selection.IsSelection(linkModelItem))
{
// cause the connector to lose focus, because the PropertyGrid would not have focus.
// this scenario only happens if the user explicitly selects the FlowSwitch link after
// editing the DefaultDisplayName. This behavior is only a workaround due to the fact
// that PropertyGrid does not receive update from change in a FakeModelPropertyImpl
// (i.e. FlowSwitchLink).
Keyboard.ClearFocus();
Selection.SelectOnly(this.Context, this.ModelItem);
linkModelItem.Highlight();
}
}
}
}
}
internal static List <ConnectionPoint> GetConnectionPoints(DependencyObject obj)
{
if (obj is StartSymbol)
{
return((List <ConnectionPoint>)obj.GetValue(StateContainerEditor.ConnectionPointsProperty));
}
if (!(obj is VirtualizedContainerService.VirtualizingContainer))
{
obj = VisualTreeUtils.FindVisualAncestor <VirtualizedContainerService.VirtualizingContainer>(obj);
}
return((List <ConnectionPoint>)obj.GetValue(StateContainerEditor.ConnectionPointsProperty));
}
private void OnExpandCollapseButtonClicked(object sender, RoutedEventArgs e)
{
ToggleButton button = (ToggleButton)sender;
ListBox listBox = VisualTreeUtils.FindVisualAncestor <ListBox>(button);
ExpandableItemWrapper wrapper = (ExpandableItemWrapper)listBox.SelectedItem;
wrapper.IsExpanded = button.IsChecked.Value;
this.ViewStateService.StoreViewState(wrapper.Item, ExpandViewStateKey, button.IsChecked.Value);
if ((wrapper.IsExpanded && this.Designer.ShouldCollapseAll) || !wrapper.IsExpanded && this.Designer.ShouldExpandAll)
{
// Pin the item so that it can still be expanded / collapsed when CollapseAll / ExpandAll is enabled
wrapper.IsPinned = true;
}
}
void OnDialogWindowLoaded(object s, RoutedEventArgs e)
{
//get the containing window
var parentWindow = VisualTreeUtils.FindVisualAncestor <Window>(this);
//and handle KeyDown event - in case of Esc, we should close the dialog
parentWindow.KeyDown += OnWindowKeyDown;
//add Copy command support - when user presses Ctrl+C, copy content of the error into clipboard
var copyBinding = new CommandBinding(ApplicationCommands.Copy);
copyBinding.PreviewCanExecute += OnCopyCanExecute;
copyBinding.Executed += OnCopyExecuted;
parentWindow.CommandBindings.Add(copyBinding);
}
protected override void OnPreviewMouseLeftButtonUp(MouseButtonEventArgs e)
{
if (e != null && !this.Disabled && this.scope != null)
{
ModelItem stateContainerModelItem = this.ParentStateContainerEditor.ModelItem;
ViewStateService viewStateService = this.ParentStateContainerEditor.Context.Services.GetService <ViewStateService>();
viewStateService.StoreViewStateWithUndo(stateContainerModelItem, StateContainerEditor.StateContainerWidthViewStateKey, this.ParentStateContainerEditor.StateContainerWidth);
viewStateService.StoreViewStateWithUndo(stateContainerModelItem, StateContainerEditor.StateContainerHeightViewStateKey, this.ParentStateContainerEditor.StateContainerHeight);
Mouse.OverrideCursor = null;
Mouse.Capture(null);
StateMachineDesigner stateMachineDesigner = VisualTreeUtils.FindVisualAncestor <StateMachineDesigner>(this.ParentStateContainerEditor);
stateMachineDesigner.IsResizing = false;
e.Handled = true;
}
base.OnPreviewMouseLeftButtonUp(e);
}
private void StateDesignerToolTipOpening(object sender, ToolTipEventArgs e)
{
StateContainerEditor stateContainerEditor = (StateContainerEditor)sender;
if (StateContainerEditor.CopiedTransitionDestinationState != null)
{
WorkflowViewElement view = VisualTreeUtils.FindVisualAncestor <WorkflowViewElement>(stateContainerEditor);
if (view != null)
{
StateContainerEditor container = (StateContainerEditor)DragDropHelper.GetCompositeView(view);
string errorMessage;
if (container != null && container.CanPasteTransition(StateContainerEditor.CopiedTransitionDestinationState, out errorMessage, view.ModelItem))
{
stateContainerEditor.ToolTip = SR.EditStateToolTip + Environment.NewLine + SR.PasteTransitionToolTip;
return;
}
}
}
stateContainerEditor.ToolTip = SR.EditStateToolTip;
}
public object OnItemsCopied(List <ModelItem> itemsToCopy)
{
itemsToCopy.Remove(this.initialModelItem);
// If the item copied is Transition, save its destination state guid to find the destination state when pasting.
if (itemsToCopy.Count == 1)
{
ModelItem item = itemsToCopy.First();
if (item != null && item.ItemType == typeof(Transition))
{
ModelItem destinationState = item.Properties[TransitionDesigner.ToPropertyName].Value;
if (!modelItemToGuid.ContainsKey(destinationState))
{
modelItemToGuid.Add(destinationState, Guid.NewGuid().ToString());
}
CopiedTransitionDestinationState = destinationState;
return(modelItemToGuid[destinationState]);
}
}
itemsToCopy.RemoveAll(item => item.ItemType == typeof(Transition));
// Save the locations of copied items relative to the statemachine editor to the metadata.
// The metadata will be used to translate the location view states of pasted items to the pasting target.
PointCollection metaData = new PointCollection();
foreach (ModelItem modelItem in itemsToCopy)
{
object viewState = this.ViewStateService.RetrieveViewState(modelItem, ShapeLocationViewStateKey);
Point location = (Point)viewState;
StateContainerEditor parentDesigner = VisualTreeUtils.FindVisualAncestor <StateContainerEditor>(GetStateView(modelItem));
location = parentDesigner.panel.GetLocationRelativeToOutmostPanel(location);
metaData.Add(location);
}
CopiedTransitionDestinationState = null;
return(metaData);
}
private bool IsMouseOnDragHandle(MouseButtonEventArgs e)
{
HitTestResult result = VisualTreeHelper.HitTest(this.Designer.scrollableContent, e.GetPosition(this.Designer.scrollableContent));
if (result != null)
{
WorkflowViewElement view = VisualTreeUtils.FindVisualAncestor <WorkflowViewElement>(result.VisualHit);
if (view != null && view.DragHandle != null)
{
GeneralTransform transform = view.DragHandle.TransformToAncestor(this.Designer);
Fx.Assert(transform != null, "transform should not be null");
Point topLeft = transform.Transform(new Point(0, 0));
Point bottomRight = transform.Transform(new Point(view.DragHandle.ActualWidth, view.DragHandle.ActualHeight));
Rect dragHandleRect = new Rect(topLeft, bottomRight);
if (dragHandleRect.Contains(e.GetPosition(this.Designer)))
{
return(true);
}
}
}
return(false);
}
public FreeFormPanel GetStateMachineFreeFormPanel()
{
StateDesigner current = this;
WorkflowViewElement parent = VisualTreeUtils.FindVisualAncestor <WorkflowViewElement>(current);
while (parent != null)
{
if (parent is StateDesigner)
{
current = (StateDesigner)parent;
parent = VisualTreeUtils.FindVisualAncestor <WorkflowViewElement>(current);
}
else if (parent is StateMachineDesigner)
{
return(VisualTreeUtils.FindVisualAncestor <FreeFormPanel>(current));
}
else
{
return(null);
}
}
return(null);
}
private bool IsMouseOverAdorner(MouseButtonEventArgs e)
{
HitTestResult result = VisualTreeHelper.HitTest(this.Designer.scrollViewer, e.GetPosition(this.Designer.scrollViewer));
return(result != null && VisualTreeUtils.FindVisualAncestor <Adorner>(result.VisualHit) != null);
}
public void OnItemsPasted(List <object> itemsToPaste, List <object> metaData, Point pastePoint, WorkflowViewElement pastePointReference)
{
if (this.ModelItem.ItemType == typeof(State))
{
WorkflowViewElement view = VisualTreeUtils.FindVisualAncestor <WorkflowViewElement>(this);
if (view != null)
{
StateContainerEditor container = (StateContainerEditor)DragDropHelper.GetCompositeView(view);
container.OnItemsPasted(itemsToPaste, metaData, pastePoint, pastePointReference);
}
return;
}
if (itemsToPaste.Count == 1 && itemsToPaste.First() is Transition)
{
if (metaData == null || metaData.Count != 1 || !(metaData.First() is string))
{
ShowMessageBox(SR.PasteTransitionWithoutDestinationState);
return;
}
ModelItem destinationState = FindState(metaData.First() as string);
if (destinationState == null)
{
ShowMessageBox(SR.PasteTransitionWithoutDestinationState);
return;
}
this.PopulateVirtualizingContainer(destinationState);
ModelItem[] selectedItems = this.Context.Items.GetValue <Selection>().SelectedObjects.ToArray();
string errorMessage;
if (!CanPasteTransition(destinationState, out errorMessage, selectedItems))
{
ShowMessageBox(errorMessage);
return;
}
Transition pastedTransition = itemsToPaste.First() as Transition;
Fx.Assert(pastedTransition != null, "Copied Transition should not be null.");
using (EditingScope es = (EditingScope)this.ModelItem.BeginEdit(System.Activities.Presentation.SR.PropertyChangeEditingScopeDescription))
{
string displayName = pastedTransition.DisplayName;
bool isFirst = true;
foreach (ModelItem selectedItem in selectedItems)
{
if (!isFirst)
{
StringReader reader = new StringReader(XamlServices.Save(pastedTransition));
pastedTransition = (Transition)XamlServices.Load(reader);
}
ModelItem transitionModelItem = this.Context.Services.GetRequiredService <ModelTreeManager>().WrapAsModelItem(pastedTransition);
ModelItem sourceState = selectedItem;
sourceState.Properties[StateDesigner.TransitionsPropertyName].Collection.Add(transitionModelItem);
transitionModelItem.Properties[TransitionDesigner.ToPropertyName].SetValue(destinationState);
if (isFirst)
{
this.ViewStateService.RemoveViewState(transitionModelItem, ConnectorLocationViewStateKey);
this.ViewStateService.RemoveViewState(transitionModelItem, SrcConnectionPointIndexStateKey);
this.ViewStateService.RemoveViewState(transitionModelItem, DestConnectionPointIndexStateKey);
isFirst = false;
}
}
es.Complete();
}
}
else
{
List <ModelItem> modelItemsPasted = new List <ModelItem>();
List <State> states = new List <State>();
foreach (object obj in itemsToPaste)
{
State state;
if (obj is FinalState)
{
state = new State()
{
DisplayName = DefaultFinalStateDisplayName, IsFinal = true
};
}
else
{
state = (State)obj;
if (state.DisplayName == null)
{
state.DisplayName = DefaultStateDisplayName;
}
}
states.Add(state);
}
RemoveDanglingTransitions(states);
using (EditingScope es = (EditingScope)this.ModelItem.BeginEdit(
System.Activities.Presentation.SR.CollectionAddEditingScopeDescription))
{
// Fix 157591 by storing the height and width of the container "before" the new states are added to the
// panel, and group the insertion inside one editing scope - such that Undo will also restore the
// size of the StateMachineContainer to pre-insert size.
StoreShapeSizeWithUndoRecursively(this.ModelItem);
foreach (State state in states)
{
ModelItem stateModelItem =
(this.ModelItem.ItemType == typeof(StateMachine)) ?
this.ModelItem.Properties[StateMachineDesigner.StatesPropertyName].Collection.Add(state) :
GetStateMachineModelItem(this.ModelItem).Properties[StateMachineDesigner.StatesPropertyName].Collection.Add(state);
modelItemsPasted.Add(stateModelItem);
}
es.Complete();
}
if (modelItemsPasted.Count > 0)
{
// translate location view states to be in the coordinate system of the pasting target
Fx.Assert(this.ModelItem.ItemType == typeof(StateMachine), "Only StateMachine contain the StateContainerEditor.");
this.UpdateLocationViewStatesByMetaData(modelItemsPasted, metaData, this);
if (pastePoint.X > 0 && pastePoint.Y > 0)
{
if (pastePointReference != null)
{
pastePoint = pastePointReference.TranslatePoint(pastePoint, this.panel);
pastePoint.X = pastePoint.X < 0 ? 0 : pastePoint.X;
pastePoint.Y = pastePoint.Y < 0 ? 0 : pastePoint.Y;
}
this.UpdateLocationViewStatesByPoint(modelItemsPasted, pastePoint);
}
// If paste point is not available, paste the items to the top left corner.
else
{
this.UpdateLocationViewStatesToAvoidOverlap(modelItemsPasted);
}
}
this.Dispatcher.BeginInvoke(() =>
{
if (modelItemsPasted.Count > 0 && modelItemsPasted[0] != null)
{
Keyboard.Focus(modelItemsPasted[0].View as IInputElement);
}
this.Context.Items.SetValue(new Selection(modelItemsPasted));
},
DispatcherPriority.ApplicationIdle
);
}
}
internal static ConnectionPoint ConnectionPointHitTest(Point hitPoint, ConnectionPointsAdorner adorner)
{
FreeFormPanel panel = VisualTreeUtils.FindVisualAncestor <FreeFormPanel>(adorner.AdornedElement);
return(ConnectionPointHitTest(hitPoint, adorner.ConnectionPoints, panel));
}
internal static object GetDroppedObjectInstance(DependencyObject dropTarget, EditingContext context, Type type, IDataObject dataObject)
{
if (type != null)
{
//check if type is generic
if (type.IsGenericTypeDefinition)
{
type = ResolveGenericParameters(dropTarget, context, type);
}
}
object droppedObject = null;
if (null != type)
{
try
{
droppedObject = Activator.CreateInstance(type);
if (type.IsActivityTemplateFactory() && type.IsClass)
{
//find parent WorkflowViewElement - in case of mouse drop, current drop target most likely is ISourceContainer
if (!(dropTarget is WorkflowViewElement))
{
dropTarget = VisualTreeUtils.FindVisualAncestor <WorkflowViewElement>(dropTarget);
}
Type templateFactoryInterface2 = type.GetInterface(typeof(IActivityTemplateFactory <>).FullName);
if (templateFactoryInterface2 != null)
{
droppedObject = templateFactoryInterface2.InvokeMember("Create", BindingFlags.InvokeMethod, null, droppedObject, new object[] { dropTarget, dataObject }, CultureInfo.InvariantCulture);
}
else if (droppedObject is IActivityTemplateFactory)
{
droppedObject = ((IActivityTemplateFactory)droppedObject).Create(dropTarget);
}
}
// SQM: Log activity usage count
ActivityUsageCounter.ReportUsage(context.Services.GetService <IVSSqmService>(), type);
}
catch (Exception ex)
{
if (Fx.IsFatal(ex))
{
throw;
}
string details = ex.Message;
if (ex is TargetInvocationException && ex.InnerException != null)
{
details = ex.InnerException.Message;
}
ErrorReporting.ShowErrorMessage(string.Format(CultureInfo.CurrentUICulture, SR.CannotCreateInstance, TypeNameHelper.GetDisplayName(type, false)), details);
}
}
return(droppedObject);
}
