1 files changed, 22 insertions, 29 deletions
diff --git a/library/status_handler.h b/library/status_handler.h
index c3a016d5..a7984790 100644
--- a/library/status_handler.h
+++ b/library/status_handler.h
@@ -8,7 +8,7 @@
 #define STATUSHANDLER_H_INCLUDED
 
 #include <wx/string.h>
-#include "../shared/zstring.h"
+#include <string>
 #include "../shared/int64.h"
 
 const int UI_UPDATE_INTERVAL = 100; //perform ui updates not more often than necessary, 100 seems to be a good value with only a minimal performance loss
@@ -18,21 +18,6 @@ void updateUiNow();       //do the updating
 
 
 //interfaces for status updates (can be implemented by GUI or Batch mode)
-//overwrite virtual methods for respective functionality
-
-class ErrorHandler
-{
-public:
-    ErrorHandler() {}
-    virtual ~ErrorHandler() {}
-
-    enum Response
-    {
-        IGNORE_ERROR = 10,
-        RETRY
-    };
-    virtual Response reportError(const Zstring& errorMessage) = 0;
-};
 
 
 //report status during comparison and synchronization
@@ -51,21 +36,29 @@ struct ProcessCallback
 
     //these methods have to be implemented in the derived classes to handle error and status information
     virtual void initNewProcess(int objectsTotal, zen::Int64 dataTotal, Process processID) = 0; //informs about the total amount of data that will be processed from now on
-    virtual void updateProcessedData(int objectsProcessed, zen::Int64 dataProcessed) = 0;  //called periodically after data was processed
 
-    virtual void reportInfo(const Zstring& text) = 0;
+    //called periodically after data was processed: expected(!) to update GUI!
+    virtual void reportInfo(const wxString& text) = 0;
 
-    //this method is triggered repeatedly by requestUiRefresh() and can be used to refresh the ui by dispatching pending events
-    virtual void forceUiRefresh() = 0;
+    //note: this one must NOT throw in order to properly allow undoing setting of statistics!
+    //it is in general paired with a call to requestUiRefresh() to compensate!
+    virtual void updateProcessedData(int objectsProcessed, zen::Int64 dataProcessed) = 0; //throw()
 
-    virtual void requestUiRefresh(bool allowExceptions = true) = 0; //opportunity to abort must be implemented in a frequently executed method like requestUiRefresh()
+    //opportunity to abort must be implemented in a frequently executed method like requestUiRefresh()
+    virtual void requestUiRefresh() = 0; //throw ?
 
-    virtual bool abortIsRequested() = 0; //thanks to Windows C-Api not supporting exceptions we need this one...
+    //this method is triggered repeatedly by requestUiRefresh() and can be used to refresh the ui by dispatching pending events
+    virtual void forceUiRefresh() = 0;
 
     //error handling:
-    virtual ErrorHandler::Response reportError(const wxString& errorMessage) = 0; //recoverable error situation
-    virtual void reportFatalError(const wxString& errorMessage) = 0;              //non-recoverable error situation, implement abort!
-    virtual void reportWarning   (const wxString& warningMessage, bool& warningActive) = 0;
+    enum Response
+    {
+        IGNORE_ERROR = 10,
+        RETRY
+    };
+    virtual Response reportError     (const wxString& errorMessage) = 0;  //recoverable error situation
+    virtual void     reportFatalError(const wxString& errorMessage) = 0; //non-recoverable error situation, implement abort!
+    virtual void     reportWarning   (const wxString& warningMessage, bool& warningActive) = 0;
 };
 
 
@@ -83,18 +76,18 @@ class StatusHandler : public ProcessCallback, public AbortCallback
 public:
     StatusHandler() : abortRequested(false) {}
 
-    virtual void requestUiRefresh(bool allowExceptions)
+    virtual void requestUiRefresh()
     {
         if (updateUiIsAllowed())  //test if specific time span between ui updates is over
             forceUiRefresh();
 
-        if (abortRequested && allowExceptions)
+        if (abortRequested)
             abortThisProcess();  //abort can be triggered by requestAbortion()
     }
 
-    virtual void requestAbortion() { abortRequested = true; } //this does NOT call abortThisProcess immediately, but when appropriate (e.g. async. processes finished)
-    virtual bool abortIsRequested() { return abortRequested; }
     virtual void abortThisProcess() = 0;
+    virtual void requestAbortion() { abortRequested = true; } //this does NOT call abortThisProcess immediately, but when appropriate (e.g. async. processes finished)
+    bool abortIsRequested() { return abortRequested; }
 
 private:
     bool abortRequested;