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authorDaniel Wilhelm <daniel@wili.li>2014-04-18 17:15:16 +0200
committerDaniel Wilhelm <daniel@wili.li>2014-04-18 17:15:16 +0200
commitbd6336c629841c6db3a6ca53a936d629d34db53b (patch)
tree3721ef997864108df175ce677a8a7d4342a6f1d2 /library/status_handler.h
parent4.0 (diff)
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4.1
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diff --git a/library/status_handler.h b/library/status_handler.h
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-// **************************************************************************
-// * This file is part of the FreeFileSync project. It is distributed under *
-// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
-// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de) *
-// **************************************************************************
-
-#ifndef STATUSHANDLER_H_INCLUDED
-#define STATUSHANDLER_H_INCLUDED
-
-#include <wx/string.h>
-#include <string>
-#include "../shared/int64.h"
-
-const int UI_UPDATE_INTERVAL = 100; //unit: [ms]; perform ui updates not more often than necessary, 100 seems to be a good value with only a minimal performance loss
-
-bool updateUiIsAllowed(); //test if a specific amount of time is over
-void updateUiNow(); //do the updating
-
-
-//interfaces for status updates (can be implemented by GUI or Batch mode)
-
-
-//report status during comparison and synchronization
-struct ProcessCallback
-{
- virtual ~ProcessCallback() {}
-
- //identifiers of different phases
- enum Process
- {
- PROCESS_NONE = 10,
- PROCESS_SCANNING,
- PROCESS_COMPARING_CONTENT,
- PROCESS_SYNCHRONIZING
- };
-
- //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
-
- //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()
-
- //opportunity to abort must be implemented in a frequently executed method like requestUiRefresh()
- virtual void requestUiRefresh() = 0; //throw ?
-
- //this method is triggered repeatedly by requestUiRefresh() and can be used to refresh the ui by dispatching pending events
- virtual void forceUiRefresh() = 0;
-
- //called periodically after data was processed: expected(!) to request GUI update
- virtual void reportStatus(const wxString& text) = 0; //status info only, should not be logged!
-
- //called periodically after data was processed: expected(!) to request GUI update
- virtual void reportInfo(const wxString& text) = 0;
-
- virtual void reportWarning(const wxString& warningMessage, bool& warningActive) = 0;
-
- //error handling:
- 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
-};
-
-
-//gui may want to abort process
-struct AbortCallback
-{
- virtual ~AbortCallback() {}
- virtual void requestAbortion() = 0;
-};
-
-
-//actual callback implementation will have to satisfy "process" and "gui"
-class StatusHandler : public ProcessCallback, public AbortCallback
-{
-public:
- StatusHandler() : abortRequested(false) {}
-
- virtual void requestUiRefresh()
- {
- if (updateUiIsAllowed()) //test if specific time span between ui updates is over
- forceUiRefresh();
-
- if (abortRequested)
- abortThisProcess(); //abort can be triggered by requestAbortion()
- }
-
- 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;
-};
-
-
-
-#endif // STATUSHANDLER_H_INCLUDED
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