Pcbnew: refinement to Bug #1422093 fix.

pcbnew/class_module.cpp

 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
- * Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
- * Copyright (C) 2012 Wayne Stambaugh <stambaughw@verizon.net>
- * Copyright (C) 1992-2012 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 2015 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
+ * Copyright (C) 2015 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
+ * Copyright (C) 2015 Wayne Stambaugh <stambaughw@verizon.net>
+ * Copyright (C) 1992-2015 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -174,6 +174,21 @@ MODULE::~MODULE()
     delete m_initial_comments;
 }
 
+    /**
+     * Function ClearAllNets
+     * Clear (i.e. force the ORPHANED dummy net info) the net info which
+     * depends on a given board for all pads of the footprint.
+     * This is needed when a footprint is copied between the fp editor and
+     * the board editor for instance, because net info become fully broken
+     */
+void MODULE::ClearAllNets()
+{
+    // Force the ORPHANED dummy net info for all pads.
+    // ORPHANED dummy net does not depend on a board
+    for( D_PAD* pad = Pads(); pad; pad = pad->Next() )
+        pad->SetNetCode( NETINFO_LIST::FORCE_ORPHANED );
+}
+
 
 /* Draw the anchor cross (vertical)
  * Must be done after the pads, because drawing the hole will erase overwrite

pcbnew/class_module.h

 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 2013 Jean-Pierre Charras, jp.charras at wanadoo.fr
- * Copyright (C) 1992-2013 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 2015 Jean-Pierre Charras, jp.charras at wanadoo.fr
+ * Copyright (C) 1992-2015 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -93,7 +93,7 @@ public:
 
     void Copy( MODULE* Module );        // Copy structure
 
-    /*
+    /**
      * Function Add
      * adds the given item to this MODULE and takes ownership of its memory.
      * @param aBoardItem The item to add to this board.
@@ -123,6 +123,15 @@ public:
      */
     BOARD_ITEM* Remove( BOARD_ITEM* aBoardItem );
 
+    /**
+     * Function ClearAllNets
+     * Clear (i.e. force the ORPHANED dummy net info) the net info which
+     * depends on a given board for all pads of the footprint.
+     * This is needed when a footprint is copied between the fp editor and
+     * the board editor for instance, because net info become fully broken
+     */
+    void ClearAllNets();
+
     /**
      * Function CalculateBoundingBox
      * calculates the bounding box in board coordinates.

pcbnew/loadcmp.cpp

@@ -101,8 +101,7 @@ bool FOOTPRINT_EDIT_FRAME::Load_Module_From_BOARD( MODULE* aModule )
     // Morever we do not want to save any reference to an unknown net when
     // saving the footprint in lib cache
     // so we force the ORPHANED dummy net info for all pads
-    for( D_PAD* pad = newModule->Pads(); pad; pad = pad->Next() )
-        pad->SetNetCode( NETINFO_LIST::FORCE_ORPHANED );
+    newModule->ClearAllNets();
 
     SetCrossHairPosition( wxPoint( 0, 0 ) );
     PlaceModule( newModule, NULL );
@@ -332,12 +331,12 @@ MODULE* PCB_BASE_FRAME::loadFootprint( const FPID& aFootprintId )
 
     MODULE* module = fptbl->FootprintLoadWithOptionalNickname( aFootprintId );
 
-    // Clear all references to any net info, to be sure there is no broken links
-    // to any netinfo list (should be not needed, but...)
-#if 0   // FIXME : currently crashes Pcbnew. should not.
-    for( D_PAD* pad = module->Pads(); pad; pad = pad->Next() )
-        pad->SetNetCode( NETINFO_LIST::FORCE_ORPHANED );
-#endif
+    // If the module is found, clear all net info,
+    // to be sure there is no broken links
+    // to any netinfo list (should be not needed, but it can be edited from
+    // the footprint editor )
+    if( module )
+        module->ClearAllNets();
 
     return module;
 }