/// <summary>
/// Unregister the updater on Revit document close.
/// </summary>
/// <param name="source">The source object.</param>
/// <param name="args">The DocumentClosing event args.</param>
private void UnregisterSectionUpdaterOnClose(object source, DocumentClosingEventArgs args)
{
idsToWatch.Clear();
m_oldSectionId = ElementId.InvalidElementId;
if (m_sectionUpdater != null)
{
UpdaterRegistry.UnregisterUpdater(m_sectionUpdater.GetUpdaterId());
m_sectionUpdater = null;
}
}
Result IExternalCommand.Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
try
{
m_document = commandData.Application.ActiveUIDocument.Document;
m_documentUI = commandData.Application.ActiveUIDocument;
m_thisAppId = commandData.Application.ActiveAddInId;
// creating and registering the updater for the document.
if (m_sectionUpdater == null)
{
using (Transaction tran = new Transaction(m_document, "Register Section Updater"))
{
tran.Start();
m_sectionUpdater = new SectionUpdater(m_thisAppId);
m_sectionUpdater.Register(m_document);
tran.Commit();
}
}
TaskDialog.Show("Message", "Please select a section view, then select a window.");
ElementId modelId = null;
Element sectionElement = null;
ElementId sectionId = null;
try
{
Reference referSection = m_documentUI.Selection.PickObject(ObjectType.Element, "Please select a section view.");
if (referSection != null)
{
Element sectionElem = m_document.GetElement(referSection);
if (sectionElem != null)
{
sectionElement = sectionElem;
}
}
Reference referModel = m_documentUI.Selection.PickObject(ObjectType.Element, "Please select a window to associated with the section view.");
if (referModel != null)
{
Element model = m_document.GetElement(referModel);
if (model != null)
{
if (model is FamilyInstance)
{
modelId = model.Id;
}
}
}
}
catch (OperationCanceledException)
{
TaskDialog.Show("Message", "The selection has been canceled.");
return(Result.Cancelled);
}
if (modelId == null)
{
TaskDialog.Show("Error", "The model is supposed to be a window.\n The operation will be canceled.");
return(Result.Cancelled);
}
// Find the real ViewSection for the selected section element.
string name = sectionElement.Name;
FilteredElementCollector collector = new FilteredElementCollector(m_document);
collector.WherePasses(new ElementCategoryFilter(BuiltInCategory.OST_Views));
var viewElements = from element in collector
where element.Name == name
select element;
List <Autodesk.Revit.DB.Element> sectionViews = viewElements.ToList <Autodesk.Revit.DB.Element>();
if (sectionViews.Count == 0)
{
TaskDialog.Show("Message", "Cannot find the view name " + name + "\n The operation will be canceled.");
return(Result.Failed);
}
sectionId = sectionViews[0].Id;
// Associated the section view to the window, and add a trigger for it.
if (!idsToWatch.Contains(modelId) || m_oldSectionId != sectionId)
{
idsToWatch.Clear();
idsToWatch.Add(modelId);
m_oldSectionId = sectionId;
UpdaterRegistry.RemoveAllTriggers(m_sectionUpdater.GetUpdaterId());
m_sectionUpdater.AddTriggerForUpdater(m_document, idsToWatch, sectionId, sectionElement);
TaskDialog.Show("Message", "The ViewSection id: " + sectionId + " has been associated to the window id: " + modelId + "\n You can try to move or modify the window to see how the updater works.");
}
else
{
TaskDialog.Show("Message", "The model has been already associated to the ViewSection.");
}
m_document.DocumentClosing += UnregisterSectionUpdaterOnClose;
return(Result.Succeeded);
}
catch (System.Exception ex)
{
message = ex.ToString();
return(Result.Failed);
}
}
