add try/catch in Table layouting to prevent schowcase editor to exit

diff --git a/Crow/src/Widgets/Table.cs b/Crow/src/Widgets/Table.cs
index babd4d591638f6939c12d43f079bd906aa9f1589..834a58204eec4cf4fefff7c45bc2945ba5a605dc 100644 (file)
--- a/Crow/src/Widgets/Table.cs
+++ b/Crow/src/Widgets/Table.cs
@@ -215,30 +215,37 @@ namespace Crow
                                return;
                        if (e.LayoutType == LayoutingType.Width) {
                                Widget g = sender as Widget;
-                               int cIdx = HeaderRow.Children.IndexOf (g);
-                               if (cIdx < Columns.Count &&  Columns[cIdx].Width.IsFit)
-                                       searchLargestChildInColumn (cIdx);
                                childrenRWLock.EnterReadLock ();
-                               for (int i = 1; i < Children.Count; i++) {
-                                       TableRow row = Children[i] as TableRow;
-                                       if (row.Children.Count <= cIdx)
-                                               continue;
-                                       setRowCellWidth (row.Children[cIdx], g.Slot.Width);
+                               try {
+                                       int cIdx = HeaderRow.Children.IndexOf (g);
+                                       if (cIdx < Columns.Count &&  Columns[cIdx].Width.IsFit)
+                                               searchLargestChildInColumn (cIdx);
+                                       for (int i = 1; i < Children.Count; i++) {
+                                               TableRow row = Children[i] as TableRow;
+                                               if (row.Children.Count <= cIdx)
+                                                       continue;
+                                               setRowCellWidth (row.Children[cIdx], g.Slot.Width);
+                                       }
+                               } catch {
+                               } finally {
+                                       childrenRWLock.ExitReadLock ();
                                }
-                               childrenRWLock.ExitReadLock ();
-
                                RegisterForRedraw ();
                        } else if (e.LayoutType == LayoutingType.X) {
                                Widget g = sender as Widget;
-                               int cIdx = HeaderRow.Children.IndexOf (g);
                                childrenRWLock.EnterReadLock ();
-                               for (int i = 1; i < Children.Count; i++) {
-                                       TableRow row = Children[i] as TableRow;
-                                       if (row.Children.Count <= cIdx)
-                                               continue;
-                                       row.Children[cIdx].Slot.X = g.Slot.X;
+                               try {
+                                       int cIdx = HeaderRow.Children.IndexOf (g);
+                                       for (int i = 1; i < Children.Count; i++) {
+                                               TableRow row = Children[i] as TableRow;
+                                               if (row.Children.Count <= cIdx)
+                                                       continue;
+                                               row.Children[cIdx].Slot.X = g.Slot.X;
+                                       }
+                               } catch {
+                               } finally {
+                                       childrenRWLock.ExitReadLock ();
                                }
-                               childrenRWLock.ExitReadLock ();
                                RegisterForRedraw ();
                        }
                }
@@ -270,7 +277,7 @@ namespace Crow
                                int largestWidth = 0;
                                for (int i = 1; i < Children.Count; i++) {
                                        TableRow row = Children[i] as TableRow;
-                                       if (!row.IsVisible || row.Children.Count <= i)
+                                       if (row == null || !row.IsVisible || row.Children.Count <= i)
                                                continue;
                                        int cw = row.Children [cIdx]. measureRawSize (LayoutingType.Width);
                                        if (cw > largestWidth) {