svx/source/sdr/event/eventhandler.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_svx.hxx"
  33 #include <svx/sdr/event/eventhandler.hxx>
  34
  35 // for SOLARIS compiler include of algorithm part of _STL is necesary to
  36 // get access to basic algos like ::std::find
  37 #include <algorithm>
  38 #include <tools/debug.hxx>
  39
  40 //////////////////////////////////////////////////////////////////////////////
  41
  42 namespace sdr
  43 {
  44     namespace event
  45     {
  46         BaseEvent::BaseEvent(EventHandler& rEventHandler)
  47         :       mrEventHandler(rEventHandler)
  48         {
  49             mrEventHandler.AddEvent(*this);
  50         }
  51
  52         BaseEvent::~BaseEvent()
  53         {
  54             mrEventHandler.RemoveEvent(*this);
  55         }
  56     } // end of namespace mixer
  57 } // end of namespace sdr
  58
  59 //////////////////////////////////////////////////////////////////////////////
  60
  61 namespace sdr
  62 {
  63     namespace event
  64     {
  65         void EventHandler::AddEvent(BaseEvent& rBaseEvent)
  66         {
  67             maVector.push_back(&rBaseEvent);
  68         }
  69
  70         void EventHandler::RemoveEvent(BaseEvent& rBaseEvent)
  71         {
  72             if(maVector.back() == &rBaseEvent)
  73             {
  74                 // the one to remove is the last, pop
  75                 maVector.pop_back();
  76             }
  77             else
  78             {
  79                 const BaseEventVector::iterator aFindResult = ::std::find(
  80                     maVector.begin(), maVector.end(), &rBaseEvent);
  81                 DBG_ASSERT(aFindResult != maVector.end(),
  82                     "EventHandler::RemoveEvent: Event to be removed not found (!)");
  83                 maVector.erase(aFindResult);
  84             }
  85         }
  86
  87         BaseEvent* EventHandler::GetEvent()
  88         {
  89             if(maVector.size())
  90             {
  91                 // get the last event, that one is fastest to be removed
  92                 return maVector.back();
  93             }
  94             else
  95             {
  96                 return 0L;
  97             }
  98         }
  99
 100         EventHandler::EventHandler()
 101         {
 102         }
 103
 104         EventHandler::~EventHandler()
 105         {
 106             while(maVector.size())
 107             {
 108                 delete GetEvent();
 109             }
 110         }
 111
 112         // Trigger and consume the events
 113         void EventHandler::ExecuteEvents()
 114         {
 115             for(;;)
 116             {
 117                 BaseEvent* pEvent = GetEvent();
 118                 if(pEvent == NULL)
 119                     break;
 120                 pEvent->ExecuteEvent();
 121                 delete pEvent;
 122             }
 123         }
 124
 125         // for control
 126         sal_Bool EventHandler::IsEmpty() const
 127         {
 128             return (0L == maVector.size());
 129         }
 130     } // end of namespace mixer
 131 } // end of namespace sdr
 132
 133 //////////////////////////////////////////////////////////////////////////////
 134
 135 namespace sdr
 136 {
 137     namespace event
 138     {
 139         TimerEventHandler::TimerEventHandler(sal_uInt32 nTimeout)
 140         {
 141             SetTimeout(nTimeout);
 142             Stop();
 143         }
 144
 145         TimerEventHandler::~TimerEventHandler()
 146         {
 147             Stop();
 148         }
 149
 150         // The timer when it is triggered; from class Timer
 151         void TimerEventHandler::Timeout()
 152         {
 153             ExecuteEvents();
 154         }
 155
 156         // reset the timer
 157         void TimerEventHandler::Restart()
 158         {
 159             Start();
 160         }
 161     } // end of namespace mixer
 162 } // end of namespace sdr
 163
 164 //////////////////////////////////////////////////////////////////////////////
 165 // eof