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 <ModelAPI_Result.h>
  13 #include <Events_Loop.h>
  14 #include <Events_LongOp.h>
  15
  16 using namespace std;
  17
  18 Model_Update MY_INSTANCE; /// the only one instance initialized on load of the library
  19
  20 Model_Update::Model_Update()
  21 {
  22   Events_Loop::loop()->registerListener(this, Events_Loop::eventByName(EVENT_OBJECT_CREATED));
  23   Events_Loop::loop()->registerListener(this, Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
  24 }
  25
  26 void Model_Update::processEvent(const Events_Message* theMessage)
  27 {
  28   if (isExecuted) return; // nothing to do: it is executed now
  29   //Events_LongOp::start(this);
  30   isExecuted = true;
  31   const ModelAPI_ObjectUpdatedMessage* aMsg =
  32     dynamic_cast<const ModelAPI_ObjectUpdatedMessage*>(theMessage);
  33   myInitial = aMsg->objects();
  34   // collect all documents involved into the update
  35   set<boost::shared_ptr<ModelAPI_Document> > aDocs;
  36   set<boost::shared_ptr<ModelAPI_Object> >::iterator aFIter = myInitial.begin();
  37   for(; aFIter != myInitial.end(); aFIter++) {
  38     aDocs.insert((*aFIter)->document());
  39   }
  40   // iterate all features of features-documents to update them (including hidden)
  41   set<boost::shared_ptr<ModelAPI_Document> >::iterator aDIter = aDocs.begin();
  42   for(; aDIter != aDocs.end(); aDIter++) {
  43     int aNbFeatures = (*aDIter)->size(ModelAPI_Feature::group(), true);
  44     for(int aFIndex = 0; aFIndex < aNbFeatures; aFIndex++) {
  45       FeaturePtr aFeature = boost::dynamic_pointer_cast<ModelAPI_Feature>
  46         ((*aDIter)->object(ModelAPI_Feature::group(), aFIndex, true));
  47       if (aFeature)
  48         updateFeature(aFeature);
  49     }
  50   }
  51   myUpdated.clear();
  52   // flush
  53   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
  54   Events_Loop::loop()->flush(EVENT_DISP);
  55   //Events_LongOp::end(this);
  56   isExecuted = false;
  57 }
  58
  59 bool Model_Update::updateFeature(FeaturePtr theFeature)
  60 {
  61   // check it is already processed
  62   if (myUpdated.find(theFeature) != myUpdated.end())
  63     return myUpdated[theFeature];
  64   // check all features this feature depended on (recursive call of updateFeature)
  65   bool aMustbeUpdated = myInitial.find(theFeature) != myInitial.end();
  66   if (theFeature) { // only real feature contains references to other objects
  67     // references
  68     list<boost::shared_ptr<ModelAPI_Attribute> > aRefs =
  69       theFeature->data()->attributes(ModelAPI_AttributeReference::type());
  70     list<boost::shared_ptr<ModelAPI_Attribute> >::iterator aRefsIter = aRefs.begin();
  71     for(; aRefsIter != aRefs.end(); aRefsIter++) {
  72       boost::shared_ptr<ModelAPI_Object> aSub =
  73         boost::dynamic_pointer_cast<ModelAPI_AttributeReference>(*aRefsIter)->value();
  74       if (updateObject(aSub)) {
  75         aMustbeUpdated = true;
  76       }
  77     }
  78     // lists of references
  79     aRefs = theFeature->data()->attributes(ModelAPI_AttributeRefList::type());
  80     for(aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
  81       list<ObjectPtr> aListRef =
  82         boost::dynamic_pointer_cast<ModelAPI_AttributeRefList>(*aRefsIter)->list();
  83       list<ObjectPtr>::iterator aListIter = aListRef.begin();
  84       for(; aListIter != aListRef.end(); aListIter++) {
  85         boost::shared_ptr<ModelAPI_Object> aSub = *aListIter;
  86         if (updateObject(aSub)) {
  87           aMustbeUpdated = true;
  88         }
  89       }
  90     }
  91     // execute feature if it must be updated
  92     if (aMustbeUpdated) {
  93       theFeature->execute();
  94       // redisplay all results
  95       static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
  96       const std::list<boost::shared_ptr<ModelAPI_Result> >& aResults = theFeature->results();
  97       std::list<boost::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
  98       for(; aRIter != aResults.cend(); aRIter++) {
  99         boost::shared_ptr<ModelAPI_Result> aRes = *aRIter;
 100         myUpdated[aRes] = true;
 101         ModelAPI_EventCreator::get()->sendUpdated(aRes, EVENT_DISP);
 102       }
 103       // to redisplay "presentable" feature (for ex. distance constraint)
 104       ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 105     } else { // returns also true is results were updated: for sketch that refers to sub-features but results of sub-features were changed
 106       const std::list<boost::shared_ptr<ModelAPI_Result> >& aResults = theFeature->results();
 107       std::list<boost::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
 108       for(; aRIter != aResults.cend(); aRIter++) {
 109         if (myInitial.find(*aRIter) != myInitial.end()) {
 110           aMustbeUpdated = true;
 111           break;
 112         }
 113       }
 114     }
 115   }
 116   myUpdated[theFeature] = aMustbeUpdated;
 117   return aMustbeUpdated;
 118 }
 119
 120 bool Model_Update::updateObject(boost::shared_ptr<ModelAPI_Object> theObject)
 121 {
 122   if (!theObject)
 123     return false;
 124   FeaturePtr aFeature = boost::dynamic_pointer_cast<ModelAPI_Feature>(theObject);
 125   if (aFeature) { // for feature just call update Feature
 126     return updateFeature(aFeature);
 127   }
 128   // check general object, possible just a result
 129   if (myUpdated.find(theObject) != myUpdated.end())
 130     return myUpdated[theObject]; // already processed
 131   // check the feature of this object must be executed
 132   ResultPtr aResult = boost::dynamic_pointer_cast<ModelAPI_Result>(theObject);
 133   if (aResult) {
 134     FeaturePtr aResFeature = aResult->document()->feature(aResult);
 135     if (aResFeature) {
 136       return updateFeature(aResFeature);
 137     }
 138   }
 139   if (myInitial.find(theObject) != myInitial.end())
 140     return true;
 141   return false; // nothing is known
 142 }