From 90620081c77758df86baf70c566984a39e575624 Mon Sep 17 00:00:00 2001
From: Aesylwinn <kyleacooley@gmail.com>
Date: Fri, 27 May 2016 13:15:35 -0400
Subject: [PATCH] Fix handling of deleted pathgrids.

---
 apps/opencs/view/render/pathgrid.cpp | 30 +++++++++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/apps/opencs/view/render/pathgrid.cpp b/apps/opencs/view/render/pathgrid.cpp
index b1c3be854..f2920d7fb 100644
--- a/apps/opencs/view/render/pathgrid.cpp
+++ b/apps/opencs/view/render/pathgrid.cpp
@@ -277,8 +277,31 @@ namespace CSVRender
         }
         else
         {
-            CSMWorld::CreatePathgridCommand* createCmd = new CSMWorld::CreatePathgridCommand(*model, mId);
-            commands.push(createCmd);
+            int index = mPathgridCollection.searchId(mId);
+            if (index == -1)
+            {
+                // Does not exist
+                commands.push(new CSMWorld::CreatePathgridCommand(*model, mId));
+            }
+            else
+            {
+                source = &mPathgridCollection.getRecord(index).get();
+
+                // Deleted, so revert and remove all data
+                commands.push(new CSMWorld::RevertCommand(*model, mId));
+
+                int parentColumn = mPathgridCollection.findColumnIndex(CSMWorld::Columns::ColumnId_PathgridPoints);
+                for (int row = source->mPoints.size() - 1; row >= 0; --row)
+                {
+                    commands.push(new CSMWorld::DeleteNestedCommand(*model, mId, row, parentColumn));
+                }
+
+                parentColumn = mPathgridCollection.findColumnIndex(CSMWorld::Columns::ColumnId_PathgridEdges);
+                for (int row = source->mEdges.size() - 1; row >= 0; --row)
+                {
+                    commands.push(new CSMWorld::DeleteNestedCommand(*model, mId, row, parentColumn));
+                }
+            }
         }
     }
 
@@ -510,7 +533,8 @@ namespace CSVRender
         }
         else
         {
-            removeGeometry();
+            removePathgridGeometry();
+            removeSelectedGeometry();
         }
     }