X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/db138a4c2a47b02fa9b3d0a361e626df00316ba9..9a05fd8d137bbe26acd4f86adf6d62c55424822c:/include/wx/log.h diff --git a/include/wx/log.h b/include/wx/log.h index c70ab1a09b..db595e7664 100644 --- a/include/wx/log.h +++ b/include/wx/log.h @@ -9,8 +9,8 @@ // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// -#ifndef __LOGH__ -#define __LOGH__ +#ifndef _WX_LOG_H_ +#define _WX_LOG_H_ #ifdef __GNUG__ #pragma interface "log.h" @@ -49,6 +49,23 @@ enum typedef unsigned long wxTraceMask; typedef unsigned long wxLogLevel; +// ---------------------------------------------------------------------------- +// forward declarations +// ---------------------------------------------------------------------------- +class WXDLLEXPORT wxTextCtrl; +class WXDLLEXPORT wxLogFrame; +class WXDLLEXPORT wxFrame; + +#if wxUSE_IOSTREAMH + // N.B. BC++ doesn't have istream.h, ostream.h +# include +#else +# include +# if defined(__VISUALC__) || defined(__MWERKS__) + using namespace std; +# endif +#endif + // ---------------------------------------------------------------------------- // derive from this class to redirect (or suppress, or ...) log messages // normally, only a single instance of this class exists but it's not enforced @@ -59,25 +76,38 @@ public: // ctor wxLog(); + // these functions allow to completely disable all log messages + // is logging disabled now? + static bool IsEnabled() { return ms_doLog; } + // change the flag state, return the previous one + static bool EnableLogging(bool doIt = TRUE) + { bool doLogOld = ms_doLog; ms_doLog = doIt; return doLogOld; } + // sink function static void OnLog(wxLogLevel level, const char *szString) - { if ( ms_pLogger != 0 ) ms_pLogger->DoLog(level, szString); } + { + if ( IsEnabled() ) { + wxLog *pLogger = GetActiveTarget(); + if ( pLogger ) + pLogger->DoLog(level, szString); + } + } // message buffering // flush shows all messages if they're not logged immediately // (FILE and iostream logs don't need it, but wxGuiLog does to avoid // showing 17 modal dialogs one after another) virtual void Flush(); - // call to Flush() may be optimized: call it only if this function + // call to Flush() may be optimized: call it only if this function // returns true (although Flush() also returns immediately if there // is no messages, this functions is more efficient because inline) bool HasPendingMessages() const { return m_bHasMessages; } // only one sink is active at each moment - // get current log target + // get current log target, will call wxApp::CreateLogTarget() to create one + // if none exists static wxLog *GetActiveTarget(); - // change log target, pLogger = NULL disables logging, - // returns the previous log target + // change log target, pLogger may be NULL static wxLog *SetActiveTarget(wxLog *pLogger); // functions controlling the default wxLog behaviour @@ -89,7 +119,10 @@ public: // NB: the string is not copied, so it's lifetime must be long enough! void SetTimeStampFormat(const char *szTF) { m_szTimeFormat = szTF; } // trace mask (see wxTraceXXX constants for details) - void SetTraceMask(wxTraceMask ulMask) { m_ulTraceMask = ulMask; } + static void SetTraceMask(wxTraceMask ulMask) { ms_ulTraceMask = ulMask; } + // should GetActiveTarget() try to create a new log object if the current + // is NULL? + static void DontCreateOnDemand() { ms_bAutoCreate = FALSE; } // accessors // gets the verbose status @@ -97,7 +130,7 @@ public: // get current time format const char *GetTimeStampFormat() const { return m_szTimeFormat; } // get trace mask - wxTraceMask GetTraceMask() const { return m_ulTraceMask; } + static wxTraceMask GetTraceMask() { return ms_ulTraceMask; } // make dtor virtual for all derived classes virtual ~wxLog() { } @@ -107,7 +140,6 @@ protected: bool m_bVerbose; // FALSE => ignore LogInfo messages const char *m_szTimeFormat; // format for strftime() - wxTraceMask m_ulTraceMask; // controls wxLogTrace behaviour // the logging functions that can be overriden // default DoLog() prepends the time stamp and a prefix corresponding @@ -116,12 +148,18 @@ protected: // default DoLogString does nothing but is not pure virtual because if // you override DoLog() you might not need it at all virtual void DoLogString(const char *szString); - + + // helpers + // put the time stamp in the current format into the string + wxString TimeStamp() const; + private: // static variables // ---------------- - static wxLog *ms_pLogger; // currently active log sink - static bool ms_bInitialized; // any log targets created? + static wxLog *ms_pLogger; // currently active log sink + static bool ms_doLog; // FALSE => all logging disabled + static bool ms_bAutoCreate; // automatically create new log targets? + static wxTraceMask ms_ulTraceMask; // controls wxLogTrace behaviour }; // ---------------------------------------------------------------------------- @@ -133,7 +171,7 @@ class WXDLLEXPORT wxLogStderr : public wxLog { public: // redirect log output to a FILE - wxLogStderr(FILE *fp = NULL); + wxLogStderr(FILE *fp = (FILE *) NULL); private: // implement sink function @@ -142,12 +180,13 @@ private: FILE *m_fp; }; +#if wxUSE_STD_IOSTREAM // log everything to an "ostream", cerr by default class WXDLLEXPORT wxLogStream : public wxLog { public: // redirect log output to an ostream - wxLogStream(ostream *ostr = NULL); + wxLogStream(ostream *ostr = (ostream *) NULL); protected: // implement sink function @@ -156,9 +195,12 @@ protected: // @@ using ptr here to avoid including from this file ostream *m_ostr; }; +#endif + +#ifndef wxUSE_NOGUI +#if wxUSE_STD_IOSTREAM // log everything to a text window (GUI only of course) -class wxTextCtrl; class WXDLLEXPORT wxLogTextCtrl : public wxLogStream { public: @@ -166,6 +208,7 @@ public: wxLogTextCtrl(wxTextCtrl *pTextCtrl); ~wxLogTextCtrl(); }; +#endif // ---------------------------------------------------------------------------- // GUI log target, the default one for wxWindows programs @@ -192,28 +235,55 @@ protected: // to the log window. This window has it's own menu which allows the user to // close it, clear the log contents or save it to the file. // ---------------------------------------------------------------------------- -class wxLogFrame; class WXDLLEXPORT wxLogWindow : public wxLog { public: - wxLogWindow(const wxTString& strTitle, bool bShow = TRUE); + wxLogWindow(wxFrame *pParent, // the parent frame (can be NULL) + const char *szTitle, // the title of the frame + bool bShow = TRUE, // show window immediately? + bool bPassToOld = TRUE); // pass log messages to the old target? ~wxLogWindow(); - - // show/hide the log window + + // window operations + // show/hide the log window void Show(bool bShow = TRUE); + // retrieve the pointer to the frame + wxFrame *GetFrame() const; // accessors + // the previous log target (may be NULL) wxLog *GetOldLog() const { return m_pOldLog; } + // are we passing the messages to the previous log target? + bool IsPassingMessages() const { return m_bPassMessages; } + + // we can pass the messages to the previous log target (we're in this mode by + // default: we collect all messages in the window, but also let the default + // processing take place) + void PassMessages(bool bDoPass) { m_bPassMessages = bDoPass; } + + // base class virtuals + // we don't need it ourselves, but we pass it to the previous logger + virtual void Flush(); + + // overridables + // called immediately after the log frame creation allowing for + // any extra initializations + virtual void OnFrameCreate(wxFrame *frame); + // called right before the log frame is going to be deleted + virtual void OnFrameDelete(wxFrame *frame); protected: virtual void DoLog(wxLogLevel level, const char *szString); virtual void DoLogString(const char *szString); - + private: - wxLog *m_pOldLog; // previous log target - wxLogFrame *m_pLogFrame; // the log frame + bool m_bPassMessages; // pass messages to m_pOldLog? + wxLog *m_pOldLog; // previous log target + wxLogFrame *m_pLogFrame; // the log frame }; +#endif // wxUSE_NOGUI + // ---------------------------------------------------------------------------- // /dev/null log target: suppress logging until this object goes out of scope // ---------------------------------------------------------------------------- @@ -234,12 +304,11 @@ void Foo() { class WXDLLEXPORT wxLogNull { public: - // ctor saves old log target, dtor restores it - wxLogNull() { m_pPrevLogger = wxLog::SetActiveTarget(NULL); } - ~wxLogNull() { (void)wxLog::SetActiveTarget(m_pPrevLogger); } + wxLogNull() { m_flagOld = wxLog::EnableLogging(FALSE); } + ~wxLogNull() { (void)wxLog::EnableLogging(m_flagOld); } private: - wxLog *m_pPrevLogger; // old log target + bool m_flagOld; // the previous value of the wxLog::ms_doLog }; // ============================================================================ @@ -254,16 +323,13 @@ private: // define wxLog // ------------------- -// NB: all these functions take `wxTString' and not -// `const wxTString&' because according to C++ standard -// the first argument to a vararg function can not be -// an array, function or reference :-( - -// the most generic log function -void WXDLLEXPORT wxLogGeneric(wxLogLevel level, wxTString strFormat, ...); - #define DECLARE_LOG_FUNCTION(level) \ - extern void WXDLLEXPORT wxLog##level(wxTString strFormat, ...) + extern void WXDLLEXPORT wxLog##level(const char *szFormat, ...) +#define DECLARE_LOG_FUNCTION2(level, arg1) \ + extern void WXDLLEXPORT wxLog##level(arg1, const char *szFormat, ...) + +// a generic function for all levels (level is passes as parameter) +DECLARE_LOG_FUNCTION2(Generic, wxLogLevel level); // one function per each level DECLARE_LOG_FUNCTION(FatalError); @@ -271,28 +337,33 @@ DECLARE_LOG_FUNCTION(Error); DECLARE_LOG_FUNCTION(Warning); DECLARE_LOG_FUNCTION(Message); DECLARE_LOG_FUNCTION(Info); -DECLARE_LOG_FUNCTION(Status); DECLARE_LOG_FUNCTION(Verbose); +// this function sends the log message to the status line of the top level +// application frame, if any +DECLARE_LOG_FUNCTION(Status); + +// this one is the same as previous except that it allows to explicitly +// specify the frame to which the output should go +DECLARE_LOG_FUNCTION2(Status, wxFrame *pFrame); + // additional one: as wxLogError, but also logs last system call error code // and the corresponding error message if available DECLARE_LOG_FUNCTION(SysError); // and another one which also takes the error code (for those broken APIs // that don't set the errno (like registry APIs in Win32)) -void WXDLLEXPORT wxLogSysError(long lErrCode, wxTString strFormat, ...); +DECLARE_LOG_FUNCTION2(SysError, long lErrCode); // debug functions do nothing in release mode #ifdef __WXDEBUG__ - // NB: debug functions don't translate their arguments - extern void WXDLLEXPORT wxLogDebug(const char *szFormat, ...); + DECLARE_LOG_FUNCTION(Debug); // first king of LogTrace is uncoditional: it doesn't check the level, // while the second one does nothing if all of level bits are not set // in wxLog::GetActive()->GetTraceMask(). - extern void WXDLLEXPORT wxLogTrace(const char *szFormat, ...); - extern void WXDLLEXPORT wxLogTrace(wxTraceMask mask, - const char *szFormat, ...); + DECLARE_LOG_FUNCTION(Trace); + DECLARE_LOG_FUNCTION2(Trace, wxTraceMask mask); #else //!debug // these functions do nothing inline void wxLogDebug(const char *, ...) { } @@ -307,17 +378,14 @@ void WXDLLEXPORT wxLogSysError(long lErrCode, wxTString strFormat, ...); // parts of the program only) WXDLLEXPORT_DATA(extern bool) g_bVerbose; -// fwd decl to avoid including iostream.h here -class ostream; - // ---------------------------------------------------------------------------- // get error code/error message from system in a portable way // ---------------------------------------------------------------------------- // return the last system error code -unsigned long WXDLLEXPORT wxSysErrorCode(); +WXDLLEXPORT unsigned long wxSysErrorCode(); // return the error message for given (or last if 0) error code -const char* WXDLLEXPORT wxSysErrorMsg(unsigned long nErrCode = 0); +WXDLLEXPORT const char* wxSysErrorMsg(unsigned long nErrCode = 0); // ---------------------------------------------------------------------------- // debug only logging functions: use them with API name and error code @@ -334,4 +402,4 @@ const char* WXDLLEXPORT wxSysErrorMsg(unsigned long nErrCode = 0); inline void wxLogLastError(const char *) { } #endif //debug/!debug -#endif //__LOGH__ +#endif // _WX_LOG_H_