src/Model/Model_Update.cpp

   1 // File:        Model_Update.cxx
   2 // Created:     25 Jun 2014
   3 // Author:      Mikhail PONIKAROV
   4
   5 #include <Model_Update.h>
   6 #include <ModelAPI_Feature.h>
   7 #include <ModelAPI_Data.h>
   8 #include <ModelAPI_Document.h>
   9 #include <ModelAPI_Events.h>
  10 #include <ModelAPI_AttributeReference.h>
  11 #include <ModelAPI_AttributeRefList.h>
  12 #include <Events_Loop.h>
  13
  14 using namespace std;
  15
  16 Model_Update MY_INSTANCE; /// the only one instance initialized on load of the library
  17
  18 Model_Update::Model_Update()
  19 {
  20   Events_Loop::loop()->registerListener(this, Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
  21 }
  22
  23 void Model_Update::processEvent(const Events_Message* theMessage)
  24 {
  25   const ModelAPI_ObjectUpdatedMessage* aMsg =
  26     dynamic_cast<const ModelAPI_ObjectUpdatedMessage*>(theMessage);
  27   myInitial = aMsg->features();
  28   // collect all documents involved into the update
  29   set<boost::shared_ptr<ModelAPI_Document> > aDocs;
  30   set<boost::shared_ptr<ModelAPI_Object> >::iterator aFIter = myInitial.begin();
  31   for(; aFIter != myInitial.end(); aFIter++) {
  32     aDocs.insert((*aFIter)->document());
  33   }
  34   // iterate all features of features-documents to update them
  35   set<boost::shared_ptr<ModelAPI_Document> >::iterator aDIter = aDocs.begin();
  36   for(; aDIter != aDocs.end(); aDIter++) {
  37     int aNbFeatures = (*aDIter)->size(FEATURES_GROUP);
  38     for(int aFIndex = 0; aFIndex < aNbFeatures; aFIndex++) {
  39       boost::shared_ptr<ModelAPI_Feature> aFeature =
  40         boost::dynamic_pointer_cast<ModelAPI_Feature>((*aDIter)->object(FEATURES_GROUP, aFIndex));
  41       if (aFeature)
  42         updateFeature(aFeature);
  43     }
  44   }
  45   myUpdated.clear();
  46   // flush
  47   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
  48   Events_Loop::loop()->flush(EVENT_DISP);
  49 }
  50
  51 bool Model_Update::updateFeature(boost::shared_ptr<ModelAPI_Feature> theFeature)
  52 {
  53   // check it is already processed
  54   if (myUpdated.find(theFeature) != myUpdated.end())
  55     return myUpdated[theFeature];
  56   // check all features this feature depended on (recursive call of updateFeature)
  57   bool aMustbeUpdated = myInitial.find(theFeature) != myInitial.end();
  58   // references
  59   list<boost::shared_ptr<ModelAPI_Attribute> > aRefs =
  60     theFeature->data()->attributes(ModelAPI_AttributeReference::type());
  61   list<boost::shared_ptr<ModelAPI_Attribute> >::iterator aRefsIter = aRefs.begin();
  62   for(; aRefsIter != aRefs.end(); aRefsIter++) {
  63     boost::shared_ptr<ModelAPI_Feature> aSub =
  64       boost::dynamic_pointer_cast<ModelAPI_AttributeReference>(*aRefsIter)->value();
  65     if (aSub && aSub != theFeature && updateFeature(aSub))
  66       aMustbeUpdated = true;
  67   }
  68   // lists of references
  69   aRefs = theFeature->data()->attributes(ModelAPI_AttributeRefList::type());
  70   for(aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
  71     list<FeaturePtr> aListRef =
  72       boost::dynamic_pointer_cast<ModelAPI_AttributeRefList>(*aRefsIter)->list();
  73     list<FeaturePtr>::iterator aListIter = aListRef.begin();
  74     for(; aListIter != aListRef.end(); aListIter++) {
  75       boost::shared_ptr<ModelAPI_Feature> aSub = *aListIter;
  76       if (aSub && updateFeature(aSub))
  77         aMustbeUpdated = true;
  78     }
  79   }
  80   // execute feature if it must be updated
  81   bool anExecute = aMustbeUpdated || myInitial.find(theFeature) != myInitial.end();
  82   if (anExecute) {
  83     theFeature->execute();
  84     static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
  85     ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
  86   }
  87   myUpdated[theFeature] = anExecute;
  88   return anExecute;
  89 }