/// <summary>
/// Attempt to activate an activatable error.
/// </summary>
/// <param name="e">DiagramPointEventArgs. Indicates the element to activate.</param>
/// <returns>true if an error was activated</returns>
public static bool AttemptErrorActivation(DiagramPointEventArgs e)
{
bool retVal = false;
if (!e.Handled)
{
DiagramClientView clientView = e.DiagramClientView;
MouseAction action = clientView.ActiveMouseAction;
if ((action == null || !(action is ConnectAction || action is ToolboxAction)) &&
clientView.Selection.Count == 1)
{
DiagramItem diagramItem = e.DiagramHitTestInfo.HitDiagramItem;
IModelErrorActivation activator = diagramItem.Shape as IModelErrorActivation;
if (activator != null)
{
IModelErrorOwner errorOwner = null;
foreach (ModelElement mel in diagramItem.RepresentedElements)
{
errorOwner = EditorUtility.ResolveContextInstance(mel, false) as IModelErrorOwner;
break;
}
if (errorOwner != null)
{
ModelErrorDisplayFilter displayFilter = null;
ORMDiagram diagram;
ORMModel model;
if (null != (diagram = diagramItem.Diagram as ORMDiagram) &&
null != (model = diagram.ModelElement as ORMModel))
{
displayFilter = model.ModelErrorDisplayFilter;
}
MouseAction startingMouseAction = clientView.ActiveMouseAction;
foreach (ModelError error in errorOwner.GetErrorCollection(ModelErrorUses.DisplayPrimary))
{
if (ModelError.IsDisplayed(error, displayFilter))
{
if (activator.ActivateModelError(error))
{
// UNDONE: MSBUG Report Microsoft bug DiagramClientView.OnDoubleClick is checking
// for an active mouse action after the double click and clearing it if it is set.
// This may be appropriate if the mouse action was set before the subfield double
// click and did not change during the callback, but is definitely not appropriate
// if the double click activated the mouse action.
// Note that this bug makes it impossible to override OnDoubleClick and OnSubFieldDoubleClick
// because e.Handled cannot be reliably checked, so there is no way to call base.OnDoubleClick
// of base.OnSubFieldDoubleClick from a more derived class without attempting error activation
// twice. If this is fixed, then any OnDoubleClick/OnSubFieldDoubleClick implementation
// that simply defers to this method then calls the base can be eliminated in favor
// of the same methods here.
if (clientView.ActiveMouseAction == startingMouseAction)
{
e.Handled = true;
}
retVal = true;
break;
}
else
{
if (!retVal)
{
IORMToolTaskItem task;
IORMToolServices services;
IORMToolTaskProvider provider;
if (null != (task = error.TaskData as IORMToolTaskItem) &&
null != (services = error.Store as IORMToolServices) &&
null != (provider = services.TaskProvider))
{
if (provider.NavigateTo(task))
{
retVal = true;
break;
}
}
}
}
}
}
}
}
}
}
return(retVal);
}