src/gallium/drivers/swr/rasterizer/archrast/eventmanager.h

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  23 * @file archrast.h
  24 *
  25 * @brief Definitions for the event manager.
  26 *
  27 ******************************************************************************/
  28 #pragma once
  29
  30 #include "common/os.h"
  31
  32 #include "gen_ar_event.h"
  33 #include "gen_ar_eventhandler.h"
  34
  35 #include <vector>
  36
  37 namespace ArchRast
  38 {
  39     //////////////////////////////////////////////////////////////////////////
  40     /// EventManager - interface to dispatch events to handlers.
  41     /// Event handling occurs only on a single thread.
  42     //////////////////////////////////////////////////////////////////////////
  43     class EventManager
  44     {
  45     public:
  46         EventManager() {}
  47
  48         ~EventManager()
  49         {
  50             // Event manager owns destroying handler objects once attached.
  51             ///@note See comment for Detach.
  52             for (auto pHandler : mHandlers)
  53             {
  54                 delete pHandler;
  55             }
  56         }
  57
  58         void Attach(EventHandler* pHandler)
  59         {
  60             mHandlers.push_back(pHandler);
  61         }
  62
  63         void Dispatch(Event& event)
  64         {
  65             ///@todo Add event filter check here.
  66
  67             for (auto pHandler : mHandlers)
  68             {
  69                 event.Accept(pHandler);
  70             }
  71         }
  72     private:
  73
  74         // Handlers stay registered for life
  75         void Detach(EventHandler* pHandler) { SWR_ASSERT(0); }
  76
  77         std::vector<EventHandler*> mHandlers;
  78     };
  79 };
  80