src/Events/Events_LongOp.cpp

   1 // File:        Events_LongOp.cpp
   2 // Created:     29 Jul 2014
   3 // Author:      Mikhail PONIKAROV
   4
   5 #include <Events_LongOp.h>
   6 #include <Events_Loop.h>
   7
   8 /// senders of the long operation collected, ends the long operation event only
   9 /// if all senders are stopped
  10 std::map<void*, int> MY_SENDERS;
  11
  12 Events_LongOp::Events_LongOp(void* theSender)
  13     : Events_Message(Events_LongOp::eventID(), theSender)
  14 {
  15 }
  16
  17 Events_LongOp::~Events_LongOp()
  18 {
  19 }
  20
  21 Events_ID Events_LongOp::eventID()
  22 {
  23   Events_Loop* aLoop = Events_Loop::loop();
  24   return aLoop->eventByName("LongOperation");
  25 }
  26
  27 void Events_LongOp::start(void* theSender)
  28 {
  29   bool toSend = MY_SENDERS.empty();
  30   if (MY_SENDERS.find(theSender) == MY_SENDERS.end())
  31     MY_SENDERS[theSender] = 1;
  32   else
  33     MY_SENDERS[theSender]++;
  34
  35   if (toSend) {
  36     Events_LongOp anEvent(theSender);
  37     Events_Loop::loop()->send(anEvent);
  38   }
  39 }
  40
  41 void Events_LongOp::end(void* theSender)
  42 {
  43   if (MY_SENDERS.find(theSender) != MY_SENDERS.end()) {
  44     int aCount = MY_SENDERS[theSender];
  45     if (aCount <= 1)
  46       MY_SENDERS.erase(theSender);
  47     else
  48       MY_SENDERS[theSender] = aCount - 1;
  49   }
  50   if (MY_SENDERS.empty()) {
  51     Events_LongOp anEvent(theSender);
  52     Events_Loop::loop()->send(anEvent);
  53   }
  54 }
  55
  56 bool Events_LongOp::isPerformed()
  57 {
  58   return !MY_SENDERS.empty();
  59 }