+// ----------------------------------------------------------------------------
+// wxHelpProvider
+// ----------------------------------------------------------------------------
+
+wxHelpProvider *wxHelpProvider::ms_helpProvider = (wxHelpProvider *)NULL;
+
+// trivial implementation of some methods which we don't want to make pure
+// virtual for convenience
+
+void wxHelpProvider::AddHelp(wxWindowBase * WXUNUSED(window),
+ const wxString& WXUNUSED(text))
+{
+}
+
+void wxHelpProvider::AddHelp(wxWindowID WXUNUSED(id),
+ const wxString& WXUNUSED(text))
+{
+}
+
+// removes the association
+void wxHelpProvider::RemoveHelp(wxWindowBase* WXUNUSED(window))
+{
+}
+
+wxHelpProvider::~wxHelpProvider()
+{
+}
+
+wxString wxHelpProvider::GetHelpTextMaybeAtPoint(wxWindowBase *window)
+{
+ if ( m_helptextAtPoint != wxDefaultPosition ||
+ m_helptextOrigin != wxHelpEvent::Origin_Unknown )
+ {
+ wxCHECK_MSG( window, wxEmptyString, _T("window must not be NULL") );
+
+ wxPoint pt = m_helptextAtPoint;
+ wxHelpEvent::Origin origin = m_helptextOrigin;
+
+ m_helptextAtPoint = wxDefaultPosition;
+ m_helptextOrigin = wxHelpEvent::Origin_Unknown;
+
+ return window->GetHelpTextAtPoint(pt, origin);
+ }
+
+ return GetHelp(window);
+}
+
+// ----------------------------------------------------------------------------
+// wxSimpleHelpProvider
+// ----------------------------------------------------------------------------
+
+#define WINHASH_KEY(w) wxPtrToUInt(w)
+
+wxString wxSimpleHelpProvider::GetHelp(const wxWindowBase *window)
+{
+ wxSimpleHelpProviderHashMap::iterator it = m_hashWindows.find(WINHASH_KEY(window));
+
+ if ( it == m_hashWindows.end() )
+ {
+ it = m_hashIds.find(window->GetId());
+ if ( it == m_hashIds.end() )
+ return wxEmptyString;
+ }
+
+ return it->second;
+}
+
+void wxSimpleHelpProvider::AddHelp(wxWindowBase *window, const wxString& text)
+{
+ m_hashWindows.erase(WINHASH_KEY(window));
+ m_hashWindows[WINHASH_KEY(window)] = text;
+}
+
+void wxSimpleHelpProvider::AddHelp(wxWindowID id, const wxString& text)
+{
+ wxSimpleHelpProviderHashMap::key_type key = (wxSimpleHelpProviderHashMap::key_type)id;
+ m_hashIds.erase(key);
+ m_hashIds[key] = text;
+}
+
+// removes the association
+void wxSimpleHelpProvider::RemoveHelp(wxWindowBase* window)
+{
+ m_hashWindows.erase(WINHASH_KEY(window));
+}
+
+bool wxSimpleHelpProvider::ShowHelp(wxWindowBase *window)
+{
+#if wxUSE_MS_HTML_HELP || wxUSE_TIPWINDOW
+ const wxString text = GetHelpTextMaybeAtPoint(window);
+
+ if ( !text.empty() )
+ {
+ // use the native help popup style if it's available
+#if wxUSE_MS_HTML_HELP
+ if ( !wxCHMHelpController::ShowContextHelpPopup
+ (
+ text,
+ wxGetMousePosition(),
+ (wxWindow *)window
+ ) )
+#endif // wxUSE_MS_HTML_HELP
+ {
+#if wxUSE_TIPWINDOW
+ static wxTipWindow* s_tipWindow = NULL;
+
+ if ( s_tipWindow )
+ {
+ // Prevent s_tipWindow being nulled in OnIdle, thereby removing
+ // the chance for the window to be closed by ShowHelp
+ s_tipWindow->SetTipWindowPtr(NULL);
+ s_tipWindow->Close();
+ }
+
+ s_tipWindow = new wxTipWindow((wxWindow *)window, text,
+ 100, &s_tipWindow);
+#else // !wxUSE_TIPWINDOW
+ // we tried wxCHMHelpController but it failed and we don't have
+ // wxTipWindow to fall back on, so
+ return false;
+#endif // wxUSE_TIPWINDOW
+ }
+
+ return true;
+ }
+#else // !wxUSE_MS_HTML_HELP && !wxUSE_TIPWINDOW
+ wxUnusedVar(window);
+#endif // wxUSE_MS_HTML_HELP || wxUSE_TIPWINDOW
+
+ return false;
+}
+
+// ----------------------------------------------------------------------------
+// wxHelpControllerHelpProvider
+// ----------------------------------------------------------------------------
+
+wxHelpControllerHelpProvider::wxHelpControllerHelpProvider(wxHelpControllerBase* hc)
+{
+ m_helpController = hc;
+}
+
+bool wxHelpControllerHelpProvider::ShowHelp(wxWindowBase *window)
+{
+ const wxString text = GetHelpTextMaybeAtPoint(window);
+
+ if ( text.empty() )
+ return false;
+
+ if ( m_helpController )
+ {
+ // if it's a numeric topic, show it
+ long topic;
+ if ( text.ToLong(&topic) )
+ return m_helpController->DisplayContextPopup(topic);
+
+ // otherwise show the text directly
+ if ( m_helpController->DisplayTextPopup(text, wxGetMousePosition()) )
+ return true;
+ }
+
+ // if there is no help controller or it's not capable of showing the help,
+ // fallback to the default method
+ return wxSimpleHelpProvider::ShowHelp(window);
+}
+
+// Convenience function for turning context id into wxString
+wxString wxContextId(int id)
+{
+ return wxString::Format(_T("%d"), id);
+}
+
+// ----------------------------------------------------------------------------
+// wxHelpProviderModule: module responsible for cleaning up help provider.
+// ----------------------------------------------------------------------------
+
+class wxHelpProviderModule : public wxModule
+{
+public:
+ bool OnInit();
+ void OnExit();
+
+private:
+ DECLARE_DYNAMIC_CLASS(wxHelpProviderModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxHelpProviderModule, wxModule)
+
+bool wxHelpProviderModule::OnInit()
+{
+ // Probably we don't want to do anything by default,
+ // since it could pull in extra code
+ // wxHelpProvider::Set(new wxSimpleHelpProvider);
+
+ return true;
+}
+
+void wxHelpProviderModule::OnExit()
+{
+ if (wxHelpProvider::Get())
+ {
+ delete wxHelpProvider::Get();
+ wxHelpProvider::Set(NULL);
+ }
+}
+
projects / wxWidgets.git / blobdiff