// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
-#ifndef __LOGH__
-#define __LOGH__
+#ifndef _WX_LOG_H_
+#define _WX_LOG_H_
#ifdef __GNUG__
#pragma interface "log.h"
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
// 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
// only one sink is active at each moment
// get current log target, will call wxApp::CreateLogTarget() to create one
- // if
+ // 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
// 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
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
// @@ using ptr here to avoid including <iostream.h> 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:
wxLogTextCtrl(wxTextCtrl *pTextCtrl);
~wxLogTextCtrl();
};
+#endif
// ----------------------------------------------------------------------------
// GUI log target, the default one for wxWindows programs
// 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 wxFrame;
class WXDLLEXPORT wxLogWindow : public wxLog
{
public:
- wxLogWindow(const char *szTitle, // the title of the frame
+ 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();
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
};
// ============================================================================
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);
// 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
inline void wxLogLastError(const char *) { }
#endif //debug/!debug
-#endif //__LOGH__
+#endif // _WX_LOG_H_
projects / wxWidgets.git / blobdiff