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Remove wxConfig object caching (m_config), which solves dangling pointer problem if the global config object changes (and just makes things simpler)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@36586 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Kevin Hock
2005-12-29 01:49:55 +00:00
parent 61e6a2ab5e
commit 5bbca8b037
2 changed files with 15 additions and 39 deletions
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44
src/common/fmapbase.cpp
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@@ -247,16 +247,15 @@ wxFontMapper *wxFontMapperBase::sm_instance = NULL;
wxFontMapperBase::wxFontMapperBase()
{
#if wxUSE_CONFIG && wxUSE_FILECONFIG
m_config = NULL;
m_configIsDummy = false;
m_configDummy = NULL;
#endif // wxUSE_CONFIG
}
wxFontMapperBase::~wxFontMapperBase()
{
#if wxUSE_CONFIG && wxUSE_FILECONFIG
if ( m_configIsDummy )
delete m_config;
if ( m_configDummy )
delete m_configDummy;
#endif // wxUSE_CONFIG
}
@@ -322,42 +321,23 @@ void wxFontMapperBase::SetConfigPath(const wxString& prefix)
wxConfigBase *wxFontMapperBase::GetConfig()
{
if ( !m_config )
{
// try the default
m_config = wxConfig::Get(false /*don't create on demand*/ );
wxConfigBase *config = wxConfig::Get(false);
if ( !m_config )
{
// we still want to have a config object because otherwise we would
// keep asking the user the same questions in the interactive mode,
// so create a dummy config which won't write to any files/registry
// but will allow us to remember the results of the questions at
// least during this run
m_config = new wxMemoryConfig;
m_configIsDummy = true;
// VS: we can't call wxConfig::Set(m_config) here because that would
// disable automatic wxConfig instance creation if this code was
// called before wxApp::OnInit (this happens in wxGTK -- it sets
// default wxFont encoding in wxApp::Initialize())
}
}
if ( m_configIsDummy && wxConfig::Get(false) != NULL )
// If there is no global configuration, use an internal memory configuration
if ( !config )
{
// VS: in case we created dummy m_config (see above), we want to switch back
// to the real one as soon as one becomes available.
delete m_config;
m_config = wxConfig::Get(false);
m_configIsDummy = false;
// FIXME: ideally, we should add keys from dummy config to the real one now,
if ( !m_configDummy )
m_configDummy = new wxMemoryConfig;
config = m_configDummy;
// FIXME: ideally, we should add keys from dummy config to a real one later,
// but it is a low-priority task because typical wxWin application
// either doesn't use wxConfig at all or creates wxConfig object in
// wxApp::OnInit(), before any real interaction with the user takes
// place...
}
return m_config;
return config;
}
const wxString& wxFontMapperBase::GetConfigPath()