// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
-#ifndef __LOGH__
-#define __LOGH__
+#ifndef _WX_LOG_H_
+#define _WX_LOG_H_
-#ifdef __GNUG__
-#pragma interface "log.h"
-#endif //GNU C++
+#ifdef __GNUG__
+ #pragma interface "log.h"
+#endif
+
+#include "wx/setup.h"
+#include "wx/string.h"
+
+// ----------------------------------------------------------------------------
+// forward declarations
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxTextCtrl;
+class WXDLLEXPORT wxLogFrame;
+class WXDLLEXPORT wxFrame;
+
+// ----------------------------------------------------------------------------
+// types
+// ----------------------------------------------------------------------------
+
+typedef unsigned long wxTraceMask;
+typedef unsigned long wxLogLevel;
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#if wxUSE_LOG
+
+#include <time.h> // for time_t
+
+#include "wx/dynarray.h"
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+// different standard log levels (you may also define your own)
+enum
+{
+ wxLOG_FatalError, // program can't continue, abort immediately
+ wxLOG_Error, // a serious error, user must be informed about it
+ wxLOG_Warning, // user is normally informed about it but may be ignored
+ wxLOG_Message, // normal message (i.e. normal output of a non GUI app)
+ wxLOG_Info, // informational message (a.k.a. 'Verbose')
+ wxLOG_Status, // informational: might go to the status line of GUI app
+ wxLOG_Debug, // never shown to the user, disabled in release mode
+ wxLOG_Trace, // trace messages are also only enabled in debug mode
+ wxLOG_Progress, // used for progress indicator (not yet)
+ wxLOG_User = 100 // user defined levels start here
+};
+
+// symbolic trace masks - wxLogTrace("foo", "some trace message...") will be
+// discarded unless the string "foo" has been added to the list of allowed
+// ones with AddTraceMask()
+
+#define wxTRACE_MemAlloc "memalloc" // trace memory allocation (new/delete)
+#define wxTRACE_Messages "messages" // trace window messages/X callbacks
+#define wxTRACE_ResAlloc "resalloc" // trace GDI resource allocation
+#define wxTRACE_RefCount "refcount" // trace various ref counting operations
+
+#ifdef __WXMSW__
+ #define wxTRACE_OleCalls "ole" // OLE interface calls
+#endif
+
+// the trace masks have been superceded by symbolic trace constants, they're
+// for compatibility only andwill be removed soon - do NOT use them
+
+// meaning of different bits of the trace mask (which allows selectively
+// enable/disable some trace messages)
+#define wxTraceMemAlloc 0x0001 // trace memory allocation (new/delete)
+#define wxTraceMessages 0x0002 // trace window messages/X callbacks
+#define wxTraceResAlloc 0x0004 // trace GDI resource allocation
+#define wxTraceRefCount 0x0008 // trace various ref counting operations
+
+#ifdef __WXMSW__
+ #define wxTraceOleCalls 0x0100 // OLE interface calls
+#endif
+
+#include "wx/ioswrap.h"
// ----------------------------------------------------------------------------
// 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
-//
-// ## would ne nice to add a time stamp to log messages
// ----------------------------------------------------------------------------
+
class WXDLLEXPORT wxLog
{
public:
- enum Level
- {
- FatalError, // program can't continue, abort immediately
- Error, // a serious error, user must be informed about it
- Warning, // warning: user is normally informed about but may ignore it
- Message, // normal message (i.e. normal output of a non GUI app)
- Info, // informational message (a.k.a. 'Verbose')
- Status, // informational: might go to the status line of GUI app
- Debug, // never shown to the user, disabled in release mode
- Trace, // trace messages are also only enabled in debug mode
- Progress, // used for progress indicator (not yet)
- User1, // user defined levels (use with wxLogGeneric(wxLog::User1,...)
- User2, //
- User3, //
- };
-
- // ctor
- wxLog();
-
- // sink function
- static void OnLog(Level level, const char *szString)
- { if ( ms_pLogger != 0 ) ms_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 Flush() only if this function returns true
- bool HasPendingMessages() const { return m_bHasMessages; }
-
- // only one sink is active at each moment
- // get current log target
- static wxLog *GetActiveTarget();
- // change log target, pLogger = NULL disables logging,
- // returns the previous log target
- static wxLog *SetActiveTarget(wxLog *pLogger);
-
- // functions controlling the default wxLog behaviour
- // verbose mode is activated by standard command-line '-verbose' option
- static void SetVerbose(bool bVerbose = TRUE) { ms_bVerbose = bVerbose; }
- // sets the format for timestamp prepended by wxLog::DoLog(): it's
- // passed to strftime() function, see it's documentation for details.
- // the string is not copied!
- static void SetTimeStampFormat(const char *szTimeFormat)
- { ms_szTimeFormat = szTimeFormat; }
-
- // accessors
- // gets the verbose status
- static bool GetVerbose() { return ms_bVerbose; }
-
- // make dtor virtual for all derived classes
- virtual ~wxLog() { }
+ // 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; }
+
+ // static sink function - see DoLog() for function to overload in the
+ // derived classes
+ static void OnLog(wxLogLevel level, const wxChar *szString, time_t t)
+ {
+ if ( IsEnabled() ) {
+ wxLog *pLogger = GetActiveTarget();
+ if ( pLogger )
+ pLogger->DoLog(level, szString, t);
+ }
+ }
+
+ // 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
+ // 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, will call wxApp::CreateLogTarget() to
+ // create one if none exists
+ static wxLog *GetActiveTarget();
+ // change log target, pLogger may be NULL
+ static wxLog *SetActiveTarget(wxLog *pLogger);
+
+ // functions controlling the default wxLog behaviour
+ // verbose mode is activated by standard command-line '-verbose'
+ // option
+ void SetVerbose(bool bVerbose = TRUE) { m_bVerbose = bVerbose; }
+ // should GetActiveTarget() try to create a new log object if the
+ // current is NULL?
+ static void DontCreateOnDemand() { ms_bAutoCreate = FALSE; }
+
+ // trace mask (see wxTraceXXX constants for details)
+ static void SetTraceMask(wxTraceMask ulMask) { ms_ulTraceMask = ulMask; }
+ // add string trace mask
+ static void AddTraceMask(const wxString& str) { ms_aTraceMasks.Add(str); }
+ // add string trace mask
+ static void RemoveTraceMask(const wxString& str);
+
+ // sets the timestamp string: this is used as strftime() format string
+ // for the log targets which add time stamps to the messages - set it
+ // to NULL to disable time stamping completely.
+ static void SetTimestamp(const wxChar *ts) { ms_timestamp = ts; }
+
+ // accessors
+ // gets the verbose status
+ bool GetVerbose() const { return m_bVerbose; }
+ // get trace mask
+ static wxTraceMask GetTraceMask() { return ms_ulTraceMask; }
+ // is this trace mask in the list?
+ static bool IsAllowedTraceMask(const wxChar *mask)
+ { return ms_aTraceMasks.Index(mask) != wxNOT_FOUND; }
+
+ // get the current timestamp format string (may be NULL)
+ static const wxChar *GetTimestamp() { return ms_timestamp; }
+
+ // helpers
+ // put the time stamp into the string if ms_timestamp != NULL (don't
+ // change it otherwise)
+ static void TimeStamp(wxString *str);
+
+ // make dtor virtual for all derived classes
+ virtual ~wxLog() { }
protected:
- bool m_bHasMessages;
+ bool m_bHasMessages; // any messages in the queue?
+ bool m_bVerbose; // FALSE => ignore LogInfo messages
- // static variables
- // ----------------
- static bool ms_bVerbose; // FALSE => ignore LogInfo messages
- static const char *ms_szTimeFormat; // format for strftime()
+ // the logging functions that can be overriden
+ // default DoLog() prepends the time stamp and a prefix corresponding
+ // to the message to szString and then passes it to DoLogString()
+ virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t);
+ // 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 wxChar *szString, time_t t);
private:
- // the logging functions that can be overriden
- // default DoLog() prepends the time stamp and a prefix corresponding
- // to the message to szString and then passes it to DoLogString()
- virtual void DoLog(Level level, const char *szString);
- // 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);
-
- static wxLog *ms_pLogger; // currently active log sink
- static bool ms_bInitialized; // any log targets created?
+ // static variables
+ // ----------------
+
+ static wxLog *ms_pLogger; // currently active log sink
+ static bool ms_doLog; // FALSE => all logging disabled
+ static bool ms_bAutoCreate; // create new log targets on demand?
+
+ // format string for strftime(), if NULL, time stamping log messages is
+ // disabled
+ static const wxChar *ms_timestamp;
+
+ static wxTraceMask ms_ulTraceMask; // controls wxLogTrace behaviour
+ static wxArrayString ms_aTraceMasks; // more powerful filter for wxLogTrace
};
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxLogStderr : public wxLog
{
public:
- // redirect log output to a FILE
- wxLogStderr(FILE *fp = NULL);
+ // redirect log output to a FILE
+ wxLogStderr(FILE *fp = (FILE *) NULL);
private:
- // implement sink function
- virtual void DoLogString(const char *szString);
+ // implement sink function
+ virtual void DoLogString(const wxChar *szString, time_t t);
- FILE *m_fp;
+ 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);
+ // redirect log output to an ostream
+ wxLogStream(ostream *ostr = (ostream *) NULL);
protected:
- // implement sink function
- virtual void DoLogString(const char *szString);
+ // implement sink function
+ virtual void DoLogString(const wxChar *szString, time_t t);
- // @@ using ptr here to avoid including <iostream.h> from this file
- ostream *m_ostr;
+ // using ptr here to avoid including <iostream.h> from this file
+ ostream *m_ostr;
};
+#endif
+
+// the following log targets are only compiled in if the we're compiling the
+// GUI part (andnot just the base one) of the library, they're implemented in
+// src/generic/logg.cpp *and not src/common/log.cpp unlike all the rest)
+
+#ifndef wxUSE_NOGUI
-/*
// log everything to a text window (GUI only of course)
-class WXDLLEXPORT wxLogTextCtrl : public wxLogStream
+class WXDLLEXPORT wxLogTextCtrl : public wxLog
{
public:
- // we just create an ostream from wxTextCtrl and use it in base class
- wxLogTextCtrl(wxTextCtrl *pTextCtrl);
- ~wxLogTextCtrl();
+ wxLogTextCtrl(wxTextCtrl *pTextCtrl);
+
+private:
+ // implement sink function
+ virtual void DoLogString(const wxChar *szString, time_t t);
+
+ // the control we use
+ wxTextCtrl *m_pTextCtrl;
};
-*/
// ----------------------------------------------------------------------------
// GUI log target, the default one for wxWindows programs
class WXDLLEXPORT wxLogGui : public wxLog
{
public:
- // ctor
- wxLogGui();
+ // ctor
+ wxLogGui();
- // show all messages that were logged since the last Flush()
- virtual void Flush();
+ // show all messages that were logged since the last Flush()
+ virtual void Flush();
protected:
- virtual void DoLog(Level level, const char *szString);
+ virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t);
- wxArrayString m_aMessages;
- bool m_bErrors;
+ // empty everything
+ void Clear();
+
+ wxArrayString m_aMessages;
+ wxArrayLong m_aTimes;
+ bool m_bErrors, // do we have any errors?
+ m_bWarnings; // any warnings?
};
+// ----------------------------------------------------------------------------
+// (background) log window: this class forwards all log messages to the log
+// target which was active when it was instantiated, but also collects them
+// 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 WXDLLEXPORT wxLogWindow : public wxLog
+{
+public:
+ wxLogWindow(wxFrame *pParent, // the parent frame (can be NULL)
+ const wxChar *szTitle, // the title of the frame
+ bool bShow = TRUE, // show window immediately?
+ bool bPassToOld = TRUE); // pass log messages to the old target?
+ ~wxLogWindow();
+
+ // 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 wxChar *szString, time_t t);
+ virtual void DoLogString(const wxChar *szString, time_t t);
+
+private:
+ 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
// ----------------------------------------------------------------------------
// example of usage:
/*
-void Foo() {
- wxFile file;
+ void Foo() {
+ wxFile file;
- // wxFile.Open() normally complains if file can't be opened, we don't want it
- wxLogNull logNo;
- if ( !file.Open("bar") )
- ... process error ourselves ...
+// wxFile.Open() normally complains if file can't be opened, we don't want it
+wxLogNull logNo;
+if ( !file.Open("bar") )
+... process error ourselves ...
- // ~wxLogNull called, old log sink restored
+// ~wxLogNull called, old log sink restored
}
-*/
+ */
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
};
// ============================================================================
// for log messages for easy redirection
// ----------------------------------------------------------------------------
+// are we in 'verbose' mode?
+// (note that it's often handy to change this var manually from the
+// debugger, thus enabling/disabling verbose reporting for some
+// parts of the program only)
+WXDLLEXPORT_DATA(extern bool) g_bVerbose;
+
+// ----------------------------------------------------------------------------
+// get error code/error message from system in a portable way
+// ----------------------------------------------------------------------------
+
+// return the last system error code
+WXDLLEXPORT unsigned long wxSysErrorCode();
+// return the error message for given (or last if 0) error code
+WXDLLEXPORT const wxChar* wxSysErrorMsg(unsigned long nErrCode = 0);
+
// define wxLog<level>
// -------------------
-// 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 :-(
+#define DECLARE_LOG_FUNCTION(level) \
+extern void WXDLLEXPORT wxLog##level(const wxChar *szFormat, ...)
+#define DECLARE_LOG_FUNCTION2(level, arg1) \
+extern void WXDLLEXPORT wxLog##level(arg1, const wxChar *szFormat, ...)
-// the most generic log function
-void WXDLLEXPORT wxLogGeneric(wxLog::Level level, wxTString strFormat, ...);
+#else // !wxUSE_LOG
+// log functions do nothing at all
#define DECLARE_LOG_FUNCTION(level) \
- extern void WXDLLEXPORT wxLog##level(wxTString strFormat, ...)
+inline void WXDLLEXPORT wxLog##level(const wxChar *szFormat, ...) {}
+#define DECLARE_LOG_FUNCTION2(level, arg1) \
+inline void WXDLLEXPORT wxLog##level(arg1, const wxChar *szFormat, ...) {}
+
+#endif // wxUSE_LOG/!wxUSE_LOG
+
+// 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);
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 don't translate their arguments
-#undef DECLARE_LOG_FUNCTION
-#define DECLARE_LOG_FUNCTION(level) \
- extern void WXDLLEXPORT wxLog##level(const char *szFormat, ...)
+// debug functions do nothing in release mode
+#ifdef __WXDEBUG__
+ DECLARE_LOG_FUNCTION(Debug);
-DECLARE_LOG_FUNCTION(Debug);
-DECLARE_LOG_FUNCTION(Trace);
+ // first king of LogTrace is uncoditional: it doesn't check the level,
+ DECLARE_LOG_FUNCTION(Trace);
-// are we in 'verbose' mode?
-// (note that it's often handy to change this var manually from the
-// debugger, thus enabling/disabling verbose reporting for some
-// 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
-// ----------------------------------------------------------------------------
+ // this second version will only log the message if the mask had been
+ // added to the list of masks with AddTraceMask()
+ DECLARE_LOG_FUNCTION2(Trace, const char *mask);
-// return the last system error code
-unsigned long WXDLLEXPORT wxSysErrorCode();
-// return the error message for given (or last if 0) error code
-const char* WXDLLEXPORT wxSysErrorMsg(unsigned long nErrCode = 0);
+ // the last one does nothing if all of level bits are not set
+ // in wxLog::GetActive()->GetTraceMask() - it's deprecated in favour of
+ // string identifiers
+ DECLARE_LOG_FUNCTION2(Trace, wxTraceMask mask);
+#else //!debug
+ // these functions do nothing in release builds
+ inline void wxLogDebug(const wxChar *, ...) { }
+ inline void wxLogTrace(const wxChar *, ...) { }
+ inline void wxLogTrace(wxTraceMask, const wxChar *, ...) { }
+ inline void wxLogTrace(const wxChar *, const wxChar *, ...) { }
+#endif // debug/!debug
// ----------------------------------------------------------------------------
// debug only logging functions: use them with API name and error code
// ----------------------------------------------------------------------------
-#ifdef __DEBUG__
- #define wxLogApiError(api, rc) \
- wxLogDebug("At %s(%d) '%s' failed with error %lx (%s).", \
- __FILE__, __LINE__, api, \
- rc, wxSysErrorMsg(rc))
- #define wxLogLastError(api) wxLogApiError(api, ::GetLastError())
+#ifndef __TFILE__
+ #define __XFILE__(x) _T(x)
+ #define __TFILE__ __XFILE__(__FILE__)
+#endif
+
+#ifdef __WXDEBUG__
+ // make life easier for people using VC++ IDE: clicking on the message
+ // will take us immediately to the place of the failed API
+#ifdef __VISUALC__
+ #define wxLogApiError(api, rc) \
+ wxLogDebug(_T("%s(%d): '%s' failed with error 0x%08lx (%s)."), \
+ __TFILE__, __LINE__, api, \
+ rc, wxSysErrorMsg(rc))
+#else // !VC++
+ #define wxLogApiError(api, rc) \
+ wxLogDebug(_T("In file %s at line %d: '%s' failed with " \
+ "error 0x%08lx (%s)."), \
+ __TFILE__, __LINE__, api, \
+ rc, wxSysErrorMsg(rc))
+#endif // VC++/!VC++
+
+ #define wxLogLastError(api) wxLogApiError(api, wxSysErrorCode())
+
#else //!debug
- #define wxLogApiError(api, rc)
- #define wxLogLastError(api)
+ inline void wxLogApiError(const wxChar *, long) { }
+ inline void wxLogLastError(const wxChar *) { }
#endif //debug/!debug
-#endif //__LOGH__
+#endif // _WX_LOG_H_
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