Merge new item attributes if any are already existing

[wxWidgets.git] / src / common / fmapbase.cpp

diff --git a/src/common/fmapbase.cpp b/src/common/fmapbase.cpp
index f148a5cd210ab6884654515f7b3431a24eaa98dc..24ace1c2149c2dc5db1d7e904f4ba8650508cf94 100644 (file)
--- a/src/common/fmapbase.cpp
+++ b/src/common/fmapbase.cpp
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        common/fmapbase.cpp
+// Name:        src/common/fmapbase.cpp
 // Purpose:     wxFontMapperBase class implementation
 // Author:      Vadim Zeitlin
 // Modified by:
@@ -30,18 +30,18 @@
     #include "wx/app.h"
     #include "wx/log.h"
     #include "wx/intl.h"
+    #include "wx/module.h"
 #endif //WX_PRECOMP
 
 #if defined(__WXMSW__)
-  #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
-  #include  "wx/msw/winundef.h"
+    #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
+    #include  "wx/msw/winundef.h"
 #endif
 
 #include "wx/fontmap.h"
 #include "wx/fmappriv.h"
 
 #include "wx/apptrait.h"
-#include "wx/module.h"
 
 // wxMemoryConfig uses wxFileConfig
 #if wxUSE_CONFIG && wxUSE_FILECONFIG
@@ -233,8 +233,25 @@ class wxFontMapperModule : public wxModule
 {
 public:
     wxFontMapperModule() : wxModule() { }
-    virtual bool OnInit() { return true; }
-    virtual void OnExit() { delete (wxFontMapperBase*)wxFontMapperBase::Set(NULL); }
+
+    virtual bool OnInit()
+    {
+        // a dummy wxFontMapperBase object could have been created during the
+        // program startup before wxApp was created, we have to delete it to
+        // allow creating the real font mapper next time it is needed now that
+        // we can create it (when the modules are initialized, wxApp object
+        // already exists)
+        wxFontMapperBase *fm = wxFontMapperBase::Get();
+        if ( fm && fm->IsDummy() )
+            wxFontMapperBase::Reset();
+
+        return true;
+    }
+
+    virtual void OnExit()
+    {
+        wxFontMapperBase::Reset();
+    }
 
     DECLARE_DYNAMIC_CLASS(wxFontMapperModule)
 };
@@ -267,9 +284,6 @@ wxFontMapperBase::~wxFontMapperBase()
 #endif // wxUSE_CONFIG
 }
 
-bool wxFontMapperBase::IsWxFontMapper()
-{   return false; }
-
 /* static */
 wxFontMapperBase *wxFontMapperBase::Get()
 {
@@ -303,6 +317,19 @@ wxFontMapper *wxFontMapperBase::Set(wxFontMapper *mapper)
     return old;
 }
 
+/* static */
+void wxFontMapperBase::Reset()
+{
+    if ( sm_instance )
+    {
+        // we need a cast as wxFontMapper is not fully declared here and so the
+        // compiler can't know that it derives from wxFontMapperBase (but
+        // run-time behaviour will be correct because the dtor is virtual)
+        delete (wxFontMapperBase *)sm_instance;
+        sm_instance = NULL;
+    }
+}
+
 #if wxUSE_CONFIG && wxUSE_FILECONFIG
 
 // ----------------------------------------------------------------------------
@@ -317,7 +344,7 @@ const wxChar *wxFontMapperBase::GetDefaultConfigPath()
 
 void wxFontMapperBase::SetConfigPath(const wxString& prefix)
 {
-    wxCHECK_RET( !prefix.IsEmpty() && prefix[0] == wxCONFIG_PATH_SEPARATOR,
+    wxCHECK_RET( !prefix.empty() && prefix[0] == wxCONFIG_PATH_SEPARATOR,
                  wxT("an absolute path should be given to wxFontMapper::SetConfigPath()") );
 
     m_configRootPath = prefix;
@@ -372,7 +399,7 @@ bool wxFontMapperBase::ChangePath(const wxString& pathNew, wxString *pathOld)
     *pathOld = config->GetPath();
 
     wxString path = GetConfigPath();
-    if ( path.IsEmpty() || path.Last() != wxCONFIG_PATH_SEPARATOR )
+    if ( path.empty() || path.Last() != wxCONFIG_PATH_SEPARATOR )
     {
         path += wxCONFIG_PATH_SEPARATOR;
     }
@@ -455,7 +482,7 @@ wxFontMapperBase::NonInteractiveCharsetToEncoding(const wxString& charset)
             config->SetPath(FONTMAPPER_CHARSET_ALIAS_PATH);
 
             wxString alias = config->Read(charset);
-            if ( !alias.IsEmpty() )
+            if ( !alias.empty() )
             {
                 // yes, we do - use it instead
                 cs = alias;
@@ -704,4 +731,3 @@ wxFontEncoding wxFontMapperBase::GetEncodingFromName(const wxString& name)
 }
 
 #endif // wxUSE_FONTMAP
-