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Member "src/Platform/Event.h" (10 Oct 2018, 2219 Bytes) of package /windows/misc/VeraCrypt_1.23-Hotfix-2_Source.zip:


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    1 /*
    2  Derived from source code of TrueCrypt 7.1a, which is
    3  Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
    4  by the TrueCrypt License 3.0.
    5 
    6  Modifications and additions to the original source code (contained in this file)
    7  and all other portions of this file are Copyright (c) 2013-2017 IDRIX
    8  and are governed by the Apache License 2.0 the full text of which is
    9  contained in the file License.txt included in VeraCrypt binary and source
   10  code distribution packages.
   11 */
   12 
   13 #ifndef TC_HEADER_Platform_Event
   14 #define TC_HEADER_Platform_Event
   15 
   16 #include "PlatformBase.h"
   17 #include "ForEach.h"
   18 #include "Mutex.h"
   19 #include "SharedPtr.h"
   20 
   21 namespace VeraCrypt
   22 {
   23     struct EventArgs
   24     {
   25         virtual ~EventArgs () { }
   26     };
   27 
   28     class EventConnectorBase
   29     {
   30     public:
   31         virtual ~EventConnectorBase () { }
   32         virtual void operator() (EventArgs &args) = 0;
   33 
   34         virtual EventConnectorBase *CloneNew () const = 0;
   35         virtual void *GetHandler () const = 0;
   36     };
   37 
   38     typedef list < shared_ptr <EventConnectorBase> > EventHandlerList;
   39 
   40     template <class T>
   41     class EventConnector : public EventConnectorBase
   42     {
   43     public:
   44         typedef void (T::*EventHandlerFunction) (EventArgs &);
   45 
   46         EventConnector (T *handler, EventHandlerFunction function)
   47             : Handler (handler), Function (function) { }
   48 
   49         virtual void operator() (EventArgs &args) { (Handler->*Function) (args); }
   50 
   51         virtual EventConnectorBase *CloneNew () const { return new EventConnector <T> (*this); }
   52         virtual void *GetHandler () const { return Handler; }
   53 
   54     protected:
   55         T *Handler;
   56         EventHandlerFunction Function;
   57     };
   58 
   59     class Event
   60     {
   61     public:
   62         Event () { }
   63         virtual ~Event () { }
   64 
   65         void Connect (const EventConnectorBase &connector);
   66         void Disconnect (void *handler);
   67         void Raise ();
   68         void Raise (EventArgs &args);
   69 
   70     protected:
   71         EventHandlerList ConnectedHandlers;
   72         Mutex HandlersMutex;
   73 
   74     private:
   75         Event (const Event &);
   76         Event &operator= (const Event &);
   77     };
   78 
   79     struct ExceptionEventArgs : public EventArgs
   80     {
   81         ExceptionEventArgs (exception &ex) : mException (ex) { }
   82         exception &mException;
   83 
   84     private:
   85         ExceptionEventArgs (const ExceptionEventArgs &);
   86         ExceptionEventArgs &operator= (const ExceptionEventArgs &);
   87     };
   88 }
   89 
   90 #endif // TC_HEADER_Platform_Event