Fp editor and Fp viewer: fix missing info on msg panel after loading a fp

Fix also duplicate/not used code
Fixes #11404
https://gitlab.com/kicad/code/kicad/issues/11404

pcbnew/footprint.cpp

@@ -1024,20 +1024,22 @@ void FOOTPRINT::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_I
         || aFrame->IsType( FRAME_FOOTPRINT_VIEWER_MODAL )
         || aFrame->IsType( FRAME_FOOTPRINT_EDITOR ) )
     {
-        wxDateTime date( static_cast<time_t>( m_lastEditTime ) );
+        size_t     padCount = GetPadCount( DO_NOT_INCLUDE_NPTH );
 
-        // Date format: see http://www.cplusplus.com/reference/ctime/strftime
-        if( m_lastEditTime && date.IsValid() )
-            msg = date.Format( wxT( "%b %d, %Y" ) ); // Abbreviated_month_name Day, Year
-        else
-            msg = _( "Unknown" );
+        aList.emplace_back( _( "Library" ), GetFPID().GetLibNickname().wx_str() );
+
+        aList.emplace_back( _( "Footprint Name" ), GetFPID().GetLibItemName().wx_str() );
+
+        aList.emplace_back( _( "Pads" ), wxString::Format( wxT( "%zu" ), padCount ) );
 
-        aList.emplace_back( _( "Last Change" ), msg );
+        aList.emplace_back( wxString::Format( _( "Doc: %s" ), GetDescription() ),
+                               wxString::Format( _( "Keywords: %s" ), GetKeywords() ) );
+
+        return;
     }
-    else if( aFrame->IsType( FRAME_PCB_EDITOR ) )
-    {
+
+    // aFrame is the board editor:
     aList.emplace_back( _( "Board Side" ), IsFlipped() ? _( "Back (Flipped)" ) : _( "Front" ) );
-    }
 
     auto addToken = []( wxString* aStr, const wxString& aAttr )
                     {
@@ -1050,7 +1052,7 @@ void FOOTPRINT::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_I
     wxString status;
     wxString attrs;
 
-    if( aFrame->GetName() == PCB_EDIT_FRAME_NAME && IsLocked() )
+    if( IsLocked() )
         addToken( &status, _( "Locked" ) );
 
     if( m_fpStatus & FP_is_PLACED )

pcbnew/footprint_edit_frame.cpp

@@ -334,6 +334,21 @@ FOOTPRINT_EDIT_FRAME::~FOOTPRINT_EDIT_FRAME()
 }
 
 
+void FOOTPRINT_EDIT_FRAME::UpdateMsgPanel()
+{
+    EDA_DRAW_FRAME::UpdateMsgPanel();
+
+    FOOTPRINT* fp = static_cast<FOOTPRINT*>( GetModel() );
+
+    if( fp )
+    {
+        std::vector<MSG_PANEL_ITEM> msgItems;
+        fp->GetMsgPanelInfo( this, msgItems );
+        SetMsgPanel( msgItems );
+    }
+}
+
+
 bool FOOTPRINT_EDIT_FRAME::IsContentModified() const
 {
     return GetScreen() && GetScreen()->IsContentModified()

pcbnew/footprint_edit_frame.h

@@ -1,7 +1,7 @@
 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 1992-2022 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 1992-2023 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 as published by the
@@ -103,6 +103,9 @@ public:
      */
     void UpdateUserInterface();
 
+    ///< @copydoc EDADRAW_FRAME::UpdateMsgPanel
+    void UpdateMsgPanel() override;
+
     /**
      * Refresh the library tree and redraw the window
      */

pcbnew/footprint_viewer_frame.cpp

@@ -370,6 +370,21 @@ SELECTION& FOOTPRINT_VIEWER_FRAME::GetCurrentSelection()
 }
 
 
+void FOOTPRINT_VIEWER_FRAME::UpdateMsgPanel()
+{
+    EDA_DRAW_FRAME::UpdateMsgPanel();
+
+    FOOTPRINT* fp = static_cast<FOOTPRINT*>( GetModel() );
+
+    if( fp )
+    {
+        std::vector<MSG_PANEL_ITEM> msgItems;
+        fp->GetMsgPanelInfo( this, msgItems );
+        SetMsgPanel( msgItems );
+    }
+}
+
+
 void FOOTPRINT_VIEWER_FRAME::setupUIConditions()
 {
     PCB_BASE_FRAME::setupUIConditions();

pcbnew/footprint_viewer_frame.h

@@ -72,6 +72,9 @@ public:
      */
     void OnUpdateFootprintButton(  wxUpdateUIEvent& aEvent );
 
+    ///< @copydoc EDADRAW_FRAME::UpdateMsgPanel
+    void UpdateMsgPanel() override;
+
     /**
      * Run the footprint viewer as a modal dialog.
      *

pcbnew/tools/pcb_control.cpp

@@ -1359,16 +1359,7 @@ int PCB_CONTROL::UpdateMessagePanel( const TOOL_EVENT& aEvent )
         if( !pcbFrame )
         {
             FOOTPRINT* fp = static_cast<FOOTPRINT*>( m_frame->GetModel() );
-            size_t     padCount = fp->GetPadCount( DO_NOT_INCLUDE_NPTH );
-
-            msgItems.emplace_back( _( "Library" ), fp->GetFPID().GetLibNickname().wx_str() );
-
-            msgItems.emplace_back( _( "Footprint Name" ), fp->GetFPID().GetLibItemName().wx_str() );
-
-            msgItems.emplace_back( _( "Pads" ), wxString::Format( wxT( "%zu" ), padCount ) );
-
-            msgItems.emplace_back( wxString::Format( _( "Doc: %s" ), fp->GetDescription() ),
-                                   wxString::Format( _( "Keywords: %s" ), fp->GetKeywords() ) );
+            fp->GetMsgPanelInfo( m_frame, msgItems );
         }
         else
         {