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_FEATURE_UPDATED));
  21 }
  22
  23 void Model_Update::processEvent(const Events_Message* theMessage)
  24 {
  25   const ModelAPI_FeatureUpdatedMessage* aMsg =
  26     dynamic_cast<const ModelAPI_FeatureUpdatedMessage*>(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_Feature> >::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(ModelAPI_Document::FEATURES_GROUP());
  38     for(int aFIndex = 0; aFIndex < aNbFeatures; aFIndex++) {
  39       boost::shared_ptr<ModelAPI_Feature> aFeature = (*aDIter)->feature(ModelAPI_Document::FEATURES_GROUP(), aFIndex);
  40       if (aFeature)
  41         updateFeature(aFeature);
  42     }
  43   }
  44   myUpdated.clear();
  45   // flush
  46   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_FEATURE_TO_REDISPLAY);
  47   Events_Loop::loop()->flush(EVENT_DISP);
  48 }
  49
  50 bool Model_Update::updateFeature(boost::shared_ptr<ModelAPI_Feature> theFeature)
  51 {
  52   // check it is already processed
  53   if (myUpdated.find(theFeature) != myUpdated.end())
  54     return myUpdated[theFeature];
  55   // check all features this feature depended on (recursive call of updateFeature)
  56   bool aMustbeUpdated = myInitial.find(theFeature) != myInitial.end();
  57   // references
  58   list<boost::shared_ptr<ModelAPI_Attribute> > aRefs =
  59     theFeature->data()->attributes(ModelAPI_AttributeReference::type());
  60   list<boost::shared_ptr<ModelAPI_Attribute> >::iterator aRefsIter = aRefs.begin();
  61   for(; aRefsIter != aRefs.end(); aRefsIter++) {
  62     boost::shared_ptr<ModelAPI_Feature> aSub =
  63       boost::dynamic_pointer_cast<ModelAPI_AttributeReference>(*aRefsIter)->value();
  64     if (aSub && aSub != theFeature && updateFeature(aSub))
  65       aMustbeUpdated = true;
  66   }
  67   // lists of references
  68   aRefs = theFeature->data()->attributes(ModelAPI_AttributeRefList::type());
  69   for(aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
  70     list<FeaturePtr> aListRef =
  71       boost::dynamic_pointer_cast<ModelAPI_AttributeRefList>(*aRefsIter)->list();
  72     list<FeaturePtr>::iterator aListIter = aListRef.begin();
  73     for(; aListIter != aListRef.end(); aListIter++) {
  74       boost::shared_ptr<ModelAPI_Feature> aSub = *aListIter;
  75       if (aSub && updateFeature(aSub))
  76         aMustbeUpdated = true;
  77     }
  78   }
  79   // execute feature if it must be updated
  80   bool anExecute = aMustbeUpdated || myInitial.find(theFeature) != myInitial.end();
  81   if (anExecute) {
  82     theFeature->execute();
  83     static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_FEATURE_TO_REDISPLAY);
  84     ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
  85   }
  86   myUpdated[theFeature] = anExecute;
  87   return anExecute;
  88 }