Fix the crash issue when select filament in per-object editting

Change-Id: I02be1b93f3b6df22843ac33ae565167711ffaf4a

src/slic3r/GUI/GUI_ObjectTable.cpp

@@ -236,6 +236,25 @@ void GridCellFilamentsEditor::BeginEdit(int row, int col, wxGrid* grid)
     }
 }
 
+bool GridCellFilamentsEditor::EndEdit(int WXUNUSED(row),
+                                     int WXUNUSED(col),
+                                     const wxGrid* WXUNUSED(grid),
+                                     const wxString& WXUNUSED(oldval),
+                                     wxString *newval)
+{
+    const wxString value = Combo()->GetValue();
+    if ( value == m_value )
+        return false;
+
+    m_value = value;
+
+    if ( newval )
+        *newval = value;
+
+    return true;
+}
+
+
 wxGridActivationResult GridCellFilamentsEditor::TryActivate(int row, int col, wxGrid* grid, const wxGridActivationSource& actSource)
 {
     ObjectGridTable *table = dynamic_cast<ObjectGridTable *>(grid->GetTable());
@@ -2365,7 +2384,7 @@ ObjectTablePanel::ObjectTablePanel( wxWindow* parent, wxWindowID id, const wxPoi
     SetSize(wxSize(-1, FromDIP(450)));
     SetMinSize(wxSize(-1, FromDIP(450)));
     SetMaxSize(wxSize(-1, FromDIP(450)));
-   
+
     //m_search_line = new wxTextCtrl(this, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, wxTE_PROCESS_ENTER);
 
     init_bitmap();
@@ -2401,7 +2420,7 @@ ObjectTablePanel::ObjectTablePanel( wxWindow* parent, wxWindowID id, const wxPoi
      m_page_top_sizer->Add(m_page_text, 0, wxEXPAND, 5);*/
 
 
-   
+
 
     //TODO, adjust later
     /*

src/slic3r/GUI/GUI_ObjectTable.hpp

@@ -40,7 +40,7 @@ public:
                       const wxRect& rect,
                       int row, int col,
                       bool isSelected) wxOVERRIDE;
-    
+
     virtual wxSize GetBestSize(wxGrid& WXUNUSED(grid),
                                wxGridCellAttr& attr,
                                wxDC& dc,
@@ -71,6 +71,8 @@ public:
     virtual wxGridCellEditor *Clone() const wxOVERRIDE;
 
     virtual void BeginEdit(int row, int col, wxGrid* grid) wxOVERRIDE;
+    virtual bool EndEdit(int row, int col, const wxGrid* grid,
+                         const wxString& oldval, wxString *newval) wxOVERRIDE;
 
     virtual wxGridActivationResult TryActivate(int row, int col, wxGrid* grid, const wxGridActivationSource& actSource) wxOVERRIDE;
     virtual void DoActivate(int row, int col, wxGrid* grid) wxOVERRIDE;
@@ -151,7 +153,7 @@ public:
 //ObjectGrid for the param setting table
 class ObjectGrid : public wxGrid
 {
-public:    
+public:
     ObjectGrid(wxWindow *parent,
         wxWindowID id,
         const wxPoint& pos = wxDefaultPosition,
@@ -377,7 +379,7 @@ public:
     virtual int GetNumberRows() wxOVERRIDE;
     virtual int GetNumberCols() wxOVERRIDE;
     virtual bool IsEmptyCell( int row, int col ) wxOVERRIDE;
-    
+
 
     //virtual wxString GetColLabelValue( int col ) wxOVERRIDE;
 
@@ -537,7 +539,7 @@ private:
 
     wxFloatingPointValidator<float> m_float_validator;
     wxBitmap           m_undo_bitmap;
-    std::vector<wxBitmap*> m_color_bitmaps; 
+    std::vector<wxBitmap*> m_color_bitmaps;
     ScalableBitmap     m_bmp_reset;
     ScalableBitmap     m_bmp_reset_disable;
 private: