optionally count repeating wxLog messages instead of logging all (patch 1520815)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40294 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/log.h

@@ -139,15 +139,7 @@ public:
 
     // 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() && ms_logLevel >= level )
-        {
-            wxLog *pLogger = GetActiveTarget();
-            if ( pLogger )
-                pLogger->DoLog(level, szString, t);
-        }
-    }
+    static void OnLog(wxLogLevel level, const wxChar *szString, time_t t);
 
     // message buffering
 
@@ -195,6 +187,14 @@ public:
     // current is NULL?
     static void DontCreateOnDemand();
 
+    // log the count of repeating messages instead of logging the messages
+    // multiple times
+    static void SetRepetitionCounting(bool bRepetCounting = true)
+    { ms_bRepetCounting = bRepetCounting; }
+
+    // gets duplicate counting status
+    static bool GetRepetitionCounting() { return ms_bRepetCounting; }
+
     // trace mask (see wxTraceXXX constants for details)
     static void SetTraceMask(wxTraceMask ulMask) { ms_ulTraceMask = ulMask; }
 
@@ -242,7 +242,7 @@ public:
     static void TimeStamp(wxString *str);
 
     // make dtor virtual for all derived classes
-    virtual ~wxLog() { }
+    virtual ~wxLog();
 
 
     // this method exists for backwards compatibility only, don't use
@@ -259,10 +259,23 @@ protected:
     // you override DoLog() you might not need it at all
     virtual void DoLogString(const wxChar *szString, time_t t);
 
+    // log a line containing the number of times the previous message was
+    // repeated
+    // returns: the number
+    static unsigned DoLogNumberOfRepeats();
+
 private:
     // static variables
     // ----------------
 
+    // traditional behaviour or counting repetitions
+    static bool        ms_bRepetCounting;
+    static wxString    ms_prevString;   // previous message that was logged
+    // how many times the previous message was logged
+    static unsigned    ms_prevCounter;
+    static time_t      ms_prevTimeStamp;// timestamp of the previous message
+    static wxLogLevel  ms_prevLevel;    // level of the previous message
+
     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?