Rework FOOTPRINT_VIEWER_FRAME::GetActiveFootprintViewer(), fix up comments and warnings.

common/single_top.cpp

@@ -164,7 +164,7 @@ static const wxString dso_full_path( const wxString& aAbsoluteArgv0 )
     // in them. They are basically spin-offs from what was once a top process module.
     // That may not make linux package maintainers happy, but that is not my job.
     // Get over it.  KiCad is not a trivial suite, and multiple platforms come
-    // into play, not merely linux.  For starters they will use extension ".kicad",
+    // into play, not merely linux.  For starters they will use extension ".kiface",
     // but later in time morph to ".so".  They are not purely libraries, else they
     // would begin with "lib" in basename.  Like I said, get over it, we're serving
     // too many masters here: python, windows, linux, OSX, multiple versions of wx...
@@ -338,7 +338,8 @@ bool PGM_SINGLE_TOP::OnPgmInit( wxApp* aWxApp )
     // KIFACE::CreateWindow() is a virtual so we don't need to link to it.
     // Remember its in the *.kiface DSO.
 #if 0
-    // this pulls in EDA_DRAW_FRAME type info, which we don't want in single_top
+    // this pulls in EDA_DRAW_FRAME type info, which we don't want in
+    // the single_top link image.
     KIWAY_PLAYER* frame = dynamic_cast<KIWAY_PLAYER*>( kiface->CreateWindow(
                                 NULL, TOP_FRAME, &kiway, KFCTL_STANDALONE ) );
 #else
@@ -375,9 +376,9 @@ bool PGM_SINGLE_TOP::OnPgmInit( wxApp* aWxApp )
         if( argc == 2 )
         {
 #if defined(PGM_DATA_FILE_EXT)
-            // PGM_DATA_FILE_EXT is different for each compile, it may come
-            // from CMake on the compiler command line, often does not.
-            // This facillity is mostly useful only for those program modules
+            // PGM_DATA_FILE_EXT, if present, may be different for each compile,
+            // it may come from CMake on the compiler command line, but often does not.
+            // This facillity is mostly useful for those program modules
             // supporting a single argv[1].
             if( !argv1.GetExt() )
                 argv1.SetExt( wxT( PGM_DATA_FILE_EXT ) );
@@ -413,11 +414,13 @@ bool PGM_SINGLE_TOP::OnPgmInit( wxApp* aWxApp )
     }
     else
     {
-        /*  The lean single_top program launcher has no access program settings,
-            else it would not be lean.  That kind of functionality is in the
-            KIFACE now, but it cannot assume that it is the only KIFACE in memory.
-            So this looks like a dead concept here, or an expensive one in terms
-            of code size.
+        /*
+
+            The lean single_top program launcher has no access to program
+            settings, for if it did, it would not be lean. That kind of
+            functionality is in the KIFACE now, but it cannot assume that it is
+            the only KIFACE in memory. So this looks like a dead concept here,
+            or an expensive one in terms of code size.
 
         wxString dir;
 
@@ -455,8 +458,8 @@ void PGM_SINGLE_TOP::MacOpenFile( const wxString& aFileName )
     if( filename.FileExists() )
     {
 #if 0
-        // this pulls in EDA_DRAW_FRAME type info, which we don't want in single_top
-        // link image.
+        // this pulls in EDA_DRAW_FRAME type info, which we don't want in
+        // the single_top link image.
         KIWAY_PLAYER* frame = dynamic_cast<KIWAY_PLAYER*>( App().GetTopWindow() );
 #else
         KIWAY_PLAYER* frame = (KIWAY_PLAYER*) App().GetTopWindow();

eeschema/files-io.cpp

@@ -248,7 +248,6 @@ bool SCH_EDIT_FRAME::OpenProjectFiles( const std::vector<wxString>& aFileSet, in
     SCH_SCREEN* screen;
     wxString    fullFileName( aFileSet[0] );
     wxString    msg;
-    bool        libCacheExist = false;
     SCH_SCREENS screenList;
 
     for( screen = screenList.GetFirst(); screen != NULL; screen = screenList.GetNext() )
@@ -384,9 +383,12 @@ bool SCH_EDIT_FRAME::OpenProjectFiles( const std::vector<wxString>& aFileSet, in
     }
 
     // load the project.
-    libCacheExist = LoadCacheLibrary( g_RootSheet->GetScreen()->GetFileName() );
+    bool libCacheExist = LoadCacheLibrary( g_RootSheet->GetScreen()->GetFileName() );
+
     g_RootSheet->SetScreen( NULL );
+
     bool diag = g_RootSheet->Load( this );
+
     SetScreen( m_CurrentSheet->LastScreen() );
 
     UpdateFileHistory( g_RootSheet->GetScreen()->GetFileName() );
@@ -397,6 +399,9 @@ bool SCH_EDIT_FRAME::OpenProjectFiles( const std::vector<wxString>& aFileSet, in
     SetSheetNumberAndCount();
     m_canvas->Refresh( true );
 
+    (void) libCacheExist;
+    (void) diag;
+
 //    return diag;
     return true;    // do not close Eeschema if the file if not found:
                     // we may have to create a new schematic file.

pcbnew/modview_frame.cpp

@@ -271,10 +271,31 @@ const wxChar* FOOTPRINT_VIEWER_FRAME::GetFootprintViewerFrameName()
 }
 
 
-FOOTPRINT_VIEWER_FRAME* FOOTPRINT_VIEWER_FRAME::GetActiveFootprintViewer( const wxWindow* aParent )
+FOOTPRINT_VIEWER_FRAME* FOOTPRINT_VIEWER_FRAME::GetActiveFootprintViewer( const KIWAY_PLAYER* aParent )
 {
-    // top_of_project!
-    wxASSERT( dynamic_cast<const PCB_EDIT_FRAME*>( aParent ) );
+    wxASSERT( aParent );
+
+    // We search only within the current project, and do so by limiting
+    // the search scope to a wxWindow hierarchy subset.  Find the top most
+    // KIWAY_PLAYER which is part of this PROJECT by matching its KIWAY* to the
+    // most immediate parent's.
+
+    // NOTE: an open FOOTPRINT_VIEWER_FRAME may have either the PCB_EDIT_FRAME
+    // or the FOOTPRINT_EDIT_FRAME.
+
+    KIWAY*      kiway = &aParent->Kiway();
+    wxWindow*   frame;
+
+    while( (frame = aParent->GetParent()) != NULL )
+    {
+        // will go NULL when we reach a non-KIWAY_PLAYER
+        KIWAY_PLAYER* kwp = dynamic_cast<KIWAY_PLAYER*>( frame );
+
+        if( kwp && &kwp->Kiway() == kiway )
+            aParent = kwp;
+        else
+            break;
+    }
 
     return (FOOTPRINT_VIEWER_FRAME*) wxWindow::FindWindowByName(
         GetFootprintViewerFrameName(), aParent );
@@ -424,7 +445,7 @@ void FOOTPRINT_VIEWER_FRAME::ClickOnFootprintList( wxCommandEvent& event )
         {
             GetBoard()->Add( loadFootprint( id ) );
         }
-        catch( IO_ERROR ioe )
+        catch( const IO_ERROR& ioe )
         {
             wxString msg;
             msg.Printf( _( "Could not load footprint \"%s\" from library \"%s\".\n\n"

pcbnew/modview_frame.h

@@ -74,10 +74,14 @@ public:
 
     /**
      * Function GetActiveFootprintViewer (static)
-     * @return a reference to the current opened Footprint viewer
-     * or NULL if no Footprint viewer currently opened
+     *
+     * @param aParent the KIWAY_PLAYER which is the parent of the calling wxWindow.
+     *  This is used to traverse the window hierarchy upwards to the topmost
+     *  KIWAY_PLAYER which is still part of the same project.
+     *
+     * @return Any currently opened Footprint viewer or NULL if none.
      */
-    static FOOTPRINT_VIEWER_FRAME* GetActiveFootprintViewer( const wxWindow* aParent );
+    static FOOTPRINT_VIEWER_FRAME* GetActiveFootprintViewer( const KIWAY_PLAYER* aParent );
 
     wxString& GetSelectedFootprint( void ) const { return m_selectedFootprintName; }
     const wxString GetSelectedLibraryFullName();