Example #1
0
        /// <summary>
        /// Implement this method as an external command for Revit.
        /// </summary>
        /// <param name="commandData">An object that is passed to the external application
        /// which contains data related to the command,
        /// such as the application object and active view.</param>
        /// <param name="message">A message that can be set by the external application
        /// which will be displayed if a failure or cancellation is returned by
        /// the external command.</param>
        /// <param name="elements">A set of elements to which the external application
        /// can add elements that are to be highlighted in case of failure or cancellation.</param>
        /// <returns>Return the status of the external command.
        /// A result of Succeeded means that the API external method functioned as expected.
        /// Cancelled can be used to signify that the user cancelled the external operation
        /// at some point. Failure should be returned if the application is unable to proceed with
        /// the operation.</returns>
        public virtual Result Execute(ExternalCommandData commandData
                                      , ref string message, ElementSet elements)
        {
            try
            {
                Document document = commandData.Application.ActiveUIDocument.Document;
                ICollection <ElementId> datums = commandData.Application.ActiveUIDocument.Selection.GetElementIds();
                Autodesk.Revit.DB.View  view   = commandData.Application.ActiveUIDocument.ActiveView;
                if (datums == null || datums.Count == 0)
                {
                    return(Result.Cancelled);
                }
                //// Show UI
                using (DatumStyleSetting settingForm = new DatumStyleSetting())
                {
                    if (settingForm.ShowDialog() == DialogResult.OK)
                    {
                        using (Transaction tran = new Transaction(document, "StyleModification"))
                        {
                            tran.Start();
                            foreach (ElementId datumRef in datums)
                            {
                                DatumPlane datum = document.GetElement(datumRef) as DatumPlane;
                                if (showLeftBubble)
                                {
                                    datum.ShowBubbleInView(DatumEnds.End0, view);
                                }
                                else
                                {
                                    datum.HideBubbleInView(DatumEnds.End0, view);
                                }
                                if (showRightBubble)
                                {
                                    datum.ShowBubbleInView(DatumEnds.End1, view);
                                }
                                else
                                {
                                    datum.HideBubbleInView(DatumEnds.End1, view);
                                }
                                if (changeLeftEnd2D)
                                {
                                    datum.SetDatumExtentType(DatumEnds.End0, view, DatumExtentType.ViewSpecific);
                                }
                                else
                                {
                                    datum.SetDatumExtentType(DatumEnds.End0, view, DatumExtentType.Model);
                                }
                                if (changeRightEnd2D)
                                {
                                    datum.SetDatumExtentType(DatumEnds.End1, view, DatumExtentType.ViewSpecific);
                                }
                                else
                                {
                                    datum.SetDatumExtentType(DatumEnds.End1, view, DatumExtentType.Model);
                                }
                                if (addLeftElbow && datum.GetLeader(DatumEnds.End0, view) == null)
                                {
                                    datum.AddLeader(DatumEnds.End0, view);
                                }
                                else if (datum.GetLeader(DatumEnds.End0, view) != null)
                                {
                                    Leader leader = datum.GetLeader(DatumEnds.End0, view);
                                    leader = CalculateLeader(leader, addLeftElbow);
                                    datum.SetLeader(DatumEnds.End0, view, leader);
                                }

                                if (addRightElbow && datum.GetLeader(DatumEnds.End1, view) == null)
                                {
                                    datum.AddLeader(DatumEnds.End1, view);
                                }
                                else if (datum.GetLeader(DatumEnds.End1, view) != null)
                                {
                                    Leader leader = datum.GetLeader(DatumEnds.End1, view);
                                    leader = CalculateLeader(leader, addRightElbow);
                                    datum.SetLeader(DatumEnds.End1, view, leader);
                                }
                            }
                            tran.Commit();
                        }
                    }
                }
                return(Result.Succeeded);
            }
            catch (Exception ex)
            {
                message = ex.Message;
                return(Result.Failed);
            }
        }