Schematic hierarchy path object improvements.

* Use Boost pointer container for sheet hierarchy object.
* Add test for modification in sheet hierarchy list object.
* Add method to clear modification flag in sheet hierarchy list object.
* Improve Doxygen comments for sheet hierarchy list object.
* Remove redundant definitions in prototypes header file.

eeschema/protos.h

@@ -2,29 +2,19 @@
 #ifndef __PROTOS_H__
 #define __PROTOS_H__
 
-#include "block_commande.h"
 #include "colors.h"
-#include "sch_sheet_path.h"
 
-#include <wx/wx.h>
 
-
-class EDA_ITEM;
 class EDA_DRAW_PANEL;
 class EDA_DRAW_FRAME;
 class SCH_EDIT_FRAME;
 class LIB_EDIT_FRAME;
 class CMP_LIBRARY;
-class LIB_COMPONENT;
-class LIB_DRAW_ITEM;
 class SCH_COMPONENT;
 class SCH_SCREEN;
 class SCH_ITEM;
-class SCH_SHEET_PIN;
 class PLOTTER;
 class SCH_SHEET;
-class LIB_PIN;
-class LABEL_OBJECT;
 class NETLIST_OBJECT;
 
 
@@ -57,6 +47,7 @@ void           SnapLibItemPoint( int            OrigX,
                        int*           ClosestX,
                        int*           ClosestY,
                        SCH_COMPONENT* DrawLibItem );
+
 bool LibItemInBox( int x1, int y1, int x2, int y2, SCH_COMPONENT* DrawLibItem );
 
 /************/
@@ -203,9 +194,7 @@ CMP_LIBRARY* SelectLibraryFromList( EDA_DRAW_FRAME* frame );
  *   0 if canceled order
  * Place the name of the selected component list in BufName
  */
-int            GetNameOfPartToLoad( EDA_DRAW_FRAME* frame,
-                                    CMP_LIBRARY*    Lib,
-                                    wxString&       BufName );
+int GetNameOfPartToLoad( EDA_DRAW_FRAME* frame, CMP_LIBRARY* Lib, wxString& BufName );
 
 /**************/
 /* LIBARCH.CPP */

eeschema/sch_sheet.h

@@ -530,4 +530,7 @@ private:
     virtual EDA_ITEM* doClone() const;
 };
 
+
+typedef boost::ptr_vector< SCH_SHEET > SCH_SHEETS;
+
 #endif /* CLASS_DRAWSHEET_H */

eeschema/schframe.cpp

@@ -346,23 +346,12 @@ void SCH_EDIT_FRAME::CreateScreens()
 
 void SCH_EDIT_FRAME::OnCloseWindow( wxCloseEvent& Event )
 {
-    SCH_SHEET_PATH* sheet;
-
-    if( m_LibeditFrame ) // Can close component editor ?
-    {
-        if( !m_LibeditFrame->Close() )
+    if( m_LibeditFrame && !m_LibeditFrame->Close() )   // Can close component editor?
         return;
-    }
 
     SCH_SHEET_LIST SheetList;
 
-    for( sheet = SheetList.GetFirst(); sheet != NULL; sheet = SheetList.GetNext() )
-    {
-        if( sheet->LastScreen() && sheet->LastScreen()->IsModify() )
-            break;
-    }
-
-    if( sheet )
+    if( SheetList.IsModified() )
     {
         wxMessageDialog dialog( this,
                                 _( "Schematic modified, Save before exit ?" ),
@@ -385,15 +374,7 @@ void SCH_EDIT_FRAME::OnCloseWindow( wxCloseEvent& Event )
         }
     }
 
-    for( sheet = SheetList.GetFirst();
-        sheet != NULL;
-        sheet = SheetList.GetNext() )
-    {
-        if( sheet->LastScreen() )
-        {
-            sheet->LastScreen()->ClrModify();
-        }
-    }
+    SheetList.ClearModifyStatus();
 
     if( !g_RootSheet->GetScreen()->GetFileName().IsEmpty()
        && (g_RootSheet->GetScreen()->GetDrawItems() != NULL) )