コード例 #1
0
ファイル: UpdateUI.cs プロジェクト: steve-stanton/backsight
        /// <summary>
        /// Applies a revised edit (as noted on a prior call to <see cref="AddUpdate"/>).
        /// </summary>
        void ApplyRevision()
        {
            UpdateOperation uop;

            // If we already have an update context, it means we're applying a revision in an attempt
            // to fix a rollforward problem.

            if (m_CurrentUpdate == null)
            {
                uop = new UpdateOperation(m_Revisions);
                m_CurrentUpdate = new UpdateEditingContext(uop);
            }
            else
            {
                // Undo the previous recalculation
                m_CurrentUpdate.RevertChanges();

                // Include the latest revision
                uop = m_CurrentUpdate.UpdateSource;
                foreach (RevisedEdit rev in m_Revisions)
                    uop.AddRevisedEdit(rev);
            }

            m_Revisions = null;

            try
            {
                // Serialize the edit to a string BEFORE we apply the changes (otherwise we'll end
                // up serializing the modified values)
                string editString = uop.GetEditString();

                // Apply changes, then rework the map model to account for the update
                uop.ApplyChanges();
                m_CurrentUpdate.Recalculate();

                // Update topology
                uop.MapModel.CleanEdit();

                // Save the update as part of the working session
                uop.Session.SaveEditString(uop, editString);
                m_CurrentUpdate = null;
                m_NumUpdate++;
            }

            catch (RollforwardException rex)
            {
                // Remember the problem edit
                m_Problem = rex.Problem;

                // The spatial index may be missing stuff (since the recalc exited early)
                CadastralMapModel model = uop.MapModel;
                model.EnsureFeaturesAreIndexed();

                // Update topology and cleanup any junk
                model.CleanEdit();

                // Re-center on the problem edit if it's off-screen
                ISpatialDisplay display = base.ActiveDisplay;
                IPosition newCenter = m_Problem.GetRecenter(display.Extent);
                if (newCenter != null)
                    display.Center = newCenter;

                MessageBox.Show("Cannot re-work geometry due to edit " + m_Problem.EditSequence, "Problem",
                                    MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }

            catch (Exception ex)
            {
                MessageBox.Show(ex.StackTrace, ex.Message);
                m_CurrentUpdate.RevertChanges();
                m_CurrentUpdate = null;
            }
        }