// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
-#ifndef __LOGH__
-#define __LOGH__
+#ifndef _WX_LOG_H_
+#define _WX_LOG_H_
#ifdef __GNUG__
#pragma interface "log.h"
-#endif //GNU C++
+#endif
+
+// ----------------------------------------------------------------------------
+// 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
+};
+
+// 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
+
+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 <iostream.h>
+#else
+# include <ostream>
+# ifdef _MSC_VER
+ 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
-//
-// ## 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();
+ // 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(Level level, const char *szString)
- { if ( ms_pLogger != 0 ) ms_pLogger->DoLog(level, szString); }
+ static void OnLog(wxLogLevel level, const char *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 Flush() only if this function returns true
+ // 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
// verbose mode is activated by standard command-line '-verbose' option
- static void SetVerbose(bool bVerbose = TRUE) { ms_bVerbose = bVerbose; }
+ void SetVerbose(bool bVerbose = TRUE) { m_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; }
+ // no time stamp at all if szTF is NULL or empty
+ // 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)
+ 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
- static bool GetVerbose() { return ms_bVerbose; }
+ bool GetVerbose() const { return m_bVerbose; }
+ // get current time format
+ const char *GetTimeStampFormat() const { return m_szTimeFormat; }
+ // get trace mask
+ static wxTraceMask GetTraceMask() { return ms_ulTraceMask; }
// make dtor virtual for all derived classes
virtual ~wxLog() { }
protected:
bool m_bHasMessages;
- // static variables
- // ----------------
- static bool ms_bVerbose; // FALSE => ignore LogInfo messages
- static const char *ms_szTimeFormat; // format for strftime()
+ bool m_bVerbose; // FALSE => ignore LogInfo messages
+ const char *m_szTimeFormat; // format for strftime()
-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);
+ virtual void DoLog(wxLogLevel 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?
+
+ // 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_doLog; // FALSE => all logging disabled
+ static bool ms_bAutoCreate; // automatically create new log targets?
+ static wxTraceMask ms_ulTraceMask; // controls wxLogTrace behaviour
};
// ----------------------------------------------------------------------------
{
public:
// redirect log output to a FILE
- wxLogStderr(FILE *fp = NULL);
+ wxLogStderr(FILE *fp = (FILE *) NULL);
private:
// implement sink function
{
public:
// redirect log output to an ostream
- wxLogStream(ostream *ostr = NULL);
+ wxLogStream(ostream *ostr = (ostream *) NULL);
protected:
// implement sink function
ostream *m_ostr;
};
-/*
+#ifndef wxUSE_NOGUI
+
// log everything to a text window (GUI only of course)
class WXDLLEXPORT wxLogTextCtrl : public wxLogStream
{
wxLogTextCtrl(wxTextCtrl *pTextCtrl);
~wxLogTextCtrl();
};
-*/
// ----------------------------------------------------------------------------
// GUI log target, the default one for wxWindows programs
virtual void Flush();
protected:
- virtual void DoLog(Level level, const char *szString);
+ virtual void DoLog(wxLogLevel level, const char *szString);
wxArrayString m_aMessages;
bool m_bErrors;
};
+// ----------------------------------------------------------------------------
+// (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 char *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 char *szString);
+ virtual void DoLogString(const char *szString);
+
+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
// ----------------------------------------------------------------------------
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
};
// ============================================================================
// 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 :-(
-
-// the most generic log function
-void WXDLLEXPORT wxLogGeneric(wxLog::Level 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);
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);
+
+ // 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().
+ DECLARE_LOG_FUNCTION(Trace);
+ DECLARE_LOG_FUNCTION2(Trace, wxTraceMask mask);
+#else //!debug
+ // these functions do nothing
+ inline void wxLogDebug(const char *, ...) { }
+ inline void wxLogTrace(const char *, ...) { }
+ inline void wxLogTrace(wxTraceMask, const char *, ...) { }
+#endif
-DECLARE_LOG_FUNCTION(Debug);
-DECLARE_LOG_FUNCTION(Trace);
// are we in 'verbose' mode?
// (note that it's often handy to change this var manually from the
// 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
// ----------------------------------------------------------------------------
// debug only logging functions: use them with API name and error code
// ----------------------------------------------------------------------------
-#ifdef __DEBUG__
+#ifdef __WXDEBUG__
#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())
+ #define wxLogLastError(api) wxLogApiError(api, wxSysErrorCode())
#else //!debug
- #define wxLogApiError(api, rc)
- #define wxLogLastError(api)
+ inline void wxLogApiError(const char *, long) { }
+ inline void wxLogLastError(const char *) { }
#endif //debug/!debug
-#endif //__LOGH__
+#endif // _WX_LOG_H_
projects / wxWidgets.git / blobdiff