Symbol editor: disable saving legacy symbol libraries.

CHANGED: The symbol library save menu entry is now only enable when the
currently selected library is modified.

CHANGED: The symbol library save all menu entry and tool bar button are
enabled when one or more of the symbol libraries have been modified.

REMOVED: The ability to save symbol libraries in the legacy file format.

eeschema/libedit/lib_edit_frame.cpp

@@ -417,6 +417,8 @@ wxString LIB_EDIT_FRAME::SetCurLib( const wxString& aLibNickname )
 
     m_libMgr->SetCurrentLib( aLibNickname );
 
+    ReCreateMenuBar();
+
     return old;
 }
 
@@ -909,7 +911,8 @@ bool LIB_EDIT_FRAME::IsContentModified()
     // Test if any library has been modified
     for( const auto& libNickname : m_libMgr->GetLibraryNames() )
     {
-        if( m_libMgr->IsLibraryModified( libNickname ) )
+        if( m_libMgr->IsLibraryModified( libNickname )
+          && !m_libMgr->IsLibraryReadOnly( libNickname ) )
             return true;
     }
 

eeschema/libedit/lib_manager.cpp

@@ -282,8 +282,8 @@ bool LIB_MANAGER::IsLibraryReadOnly( const wxString& aLibrary ) const
     if( row )
         fileType = SCH_IO_MGR::EnumFromStr( row->GetType() );
 
-    return ( fileType != SCH_IO_MGR::SCH_FILE_T::SCH_LEGACY ) && fn.FileExists() &&
-            ( !fn.IsFileWritable() || !fn.IsDirWritable() );
+    return ( fileType == SCH_IO_MGR::SCH_FILE_T::SCH_LEGACY ) ||
+            ( fn.FileExists() && !fn.IsFileWritable() ) || !fn.IsDirWritable();
 }
 
 

eeschema/libedit/libedit.cpp

@@ -55,6 +55,9 @@ void LIB_EDIT_FRAME::updateTitle()
     if( GetCurPart() )
         title += wxT( " \u2014 " ) + GetCurPart()->GetLibId().Format();
 
+    if( GetCurPart() && m_libMgr && m_libMgr->IsLibraryReadOnly( GetCurLib() ) )
+        title += " [Read Only Library]";
+
     SetTitle( title );
 }
 
@@ -375,9 +378,14 @@ void LIB_EDIT_FRAME::Save()
     {
         saveLibrary( libName, false );
     }
+    else if( !libName.IsEmpty() && m_libMgr->IsLibraryReadOnly( libName ) )
+    {
+        // Force a "Save As..." if the modified library is read only.
+        saveLibrary( libName, true );
+    }
     else
     {
-        // Save Part
+        // Save a single library.
         if( m_libMgr->FlushPart( partName, libName ) )
             m_libMgr->ClearPartModified( partName, libName );
     }
@@ -838,7 +846,7 @@ bool LIB_EDIT_FRAME::saveLibrary( const wxString& aLibrary, bool aNewFile )
 
     ClearMsgPanel();
 
-    // Copy .lib file to .bak.
+    // Copy .kicad_symb file to .bak.
     if( !backupFile( fn, "bak" ) )
         return false;
 
@@ -895,7 +903,11 @@ bool LIB_EDIT_FRAME::saveAllLibraries( bool aRequireConfirmation )
             {
                 // If saving under existing name fails then do a Save As..., and if that
                 // fails then cancel close action.
-                if( !saveLibrary( libNickname, false ) && !saveLibrary( libNickname, true ) )
+                if( !m_libMgr->IsLibraryReadOnly( libNickname )
+                  && !saveLibrary( libNickname, false ) )
+                    return false;
+
+                if( !saveLibrary( libNickname, true ) )
                     return false;
             }
         }

eeschema/libedit/menubar_libedit.cpp

@@ -45,7 +45,7 @@ void LIB_EDIT_FRAME::ReCreateMenuBar()
         LIB_ID libId = getTargetLibId();
         const wxString& libName = libId.GetLibNickname();
         const wxString& partName = libId.GetLibItemName();
-        bool readOnly = libName.IsEmpty() || m_libMgr->IsLibraryReadOnly( libName );
+        bool readOnly = libName.IsEmpty();
 
         if( partName.IsEmpty() )
             return ( !readOnly && m_libMgr->IsLibraryModified( libName ) );
@@ -53,6 +53,11 @@ void LIB_EDIT_FRAME::ReCreateMenuBar()
             return ( !readOnly && m_libMgr->IsPartModified( partName, libName ) );
     };
 
+    auto saveAllEnableCondition = [this] ( const SELECTION& sel )
+            {
+                return m_libMgr->HasModifications();
+            };
+
     //-- File menu -----------------------------------------------
     //
     CONDITIONAL_MENU* fileMenu = new CONDITIONAL_MENU( false, selTool );
@@ -64,7 +69,7 @@ void LIB_EDIT_FRAME::ReCreateMenuBar()
     fileMenu->AddSeparator();
     fileMenu->AddItem( ACTIONS::save,                modifiedDocumentCondition );
     fileMenu->AddItem( ACTIONS::saveCopyAs,          EE_CONDITIONS::ShowAlways );
-    fileMenu->AddItem( ACTIONS::saveAll,             EE_CONDITIONS::ShowAlways );
+    fileMenu->AddItem( ACTIONS::saveAll,             saveAllEnableCondition );
     fileMenu->AddItem( ACTIONS::revert,              modifiedDocumentCondition );
 
     fileMenu->AddSeparator();

eeschema/libedit/toolbars_libedit.cpp

@@ -157,7 +157,7 @@ void LIB_EDIT_FRAME::SyncToolbars()
 
     bool isEditable = m_my_part && m_my_part->IsRoot();
 
-    m_mainToolBar->Toggle( ACTIONS::saveAll,  IsContentModified() );
+    m_mainToolBar->Toggle( ACTIONS::saveAll,  m_libMgr->HasModifications() );
     m_mainToolBar->Toggle( ACTIONS::undo,     GetScreen() && GetScreen()->GetUndoCommandCount() > 0 );
     m_mainToolBar->Toggle( ACTIONS::redo,     GetScreen() && GetScreen()->GetRedoCommandCount() > 0 );
     m_mainToolBar->Toggle( ACTIONS::zoomTool, IsCurrentTool( ACTIONS::zoomTool ) );