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(FEATURES_GROUP);
  38     for(int aFIndex = 0; aFIndex < aNbFeatures; aFIndex++) {
  39       boost::shared_ptr<ModelAPI_Feature> aFeature = (*aDIter)->feature(FEATURES_GROUP, aFIndex);
  40       if (aFeature)
  41         updateFeature(aFeature);
  42     }
  43   }
  44   myUpdated.clear();
  45 }
  46
  47 bool Model_Update::updateFeature(boost::shared_ptr<ModelAPI_Feature> theFeature)
  48 {
  49   // check it is already processed
  50   if (myUpdated.find(theFeature) != myUpdated.end())
  51     return myUpdated[theFeature];
  52   // check all features this feature depended on (recursive call of updateFeature)
  53   bool aMustbeUpdated = myInitial.find(theFeature) != myInitial.end();
  54   // references
  55   list<boost::shared_ptr<ModelAPI_Attribute> > aRefs =
  56     theFeature->data()->attributes(ModelAPI_AttributeReference::type());
  57   list<boost::shared_ptr<ModelAPI_Attribute> >::iterator aRefsIter = aRefs.begin();
  58   for(; aRefsIter != aRefs.end(); aRefsIter++) {
  59     boost::shared_ptr<ModelAPI_Feature> aSub =
  60       boost::dynamic_pointer_cast<ModelAPI_AttributeReference>(*aRefsIter)->value();
  61     if (aSub && aSub != theFeature && updateFeature(aSub))
  62       aMustbeUpdated = true;
  63   }
  64   // lists of references
  65   aRefs = theFeature->data()->attributes(ModelAPI_AttributeRefList::type());
  66   for(aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
  67     list<FeaturePtr> aListRef =
  68       boost::dynamic_pointer_cast<ModelAPI_AttributeRefList>(*aRefsIter)->list();
  69     list<FeaturePtr>::iterator aListIter = aListRef.begin();
  70     for(; aListIter != aListRef.end(); aListIter++) {
  71       boost::shared_ptr<ModelAPI_Feature> aSub = *aListIter;
  72       if (aSub && updateFeature(aSub))
  73         aMustbeUpdated = true;
  74     }
  75   }
  76   // execute feature if it must be updated
  77   bool anExecute = aMustbeUpdated || myInitial.find(theFeature) != myInitial.end();
  78   if (anExecute) {
  79     theFeature->execute();
  80   }
  81   myUpdated[theFeature] = anExecute;
  82   return anExecute;
  83 }