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Updated events for Model and minor other changes
[modules/shaper.git] / src / Model / Model_PluginManager.cxx
1 // File:        Model_PluginManager.cxx
2 // Created:     20 Mar 2014
3 // Author:      Mikhail PONIKAROV
4
5 #include <Model_PluginManager.h>
6 #include <ModelAPI_Feature.h>
7 #include <ModelAPI_Plugin.h>
8 #include <Model_Data.h>
9 #include <Model_Document.h>
10 #include <Model_Application.h>
11 #include <Event_Loop.h>
12 #include <Config_FeatureMessage.h>
13 #include <Config_ModuleReader.h>
14
15 using namespace std;
16
17 static Model_PluginManager* myImpl = new Model_PluginManager();
18
19 shared_ptr<ModelAPI_Feature> Model_PluginManager::createFeature(string theFeatureID)
20 {
21   if (this != myImpl) return myImpl->createFeature(theFeatureID);
22
23   LoadPluginsInfo();
24   if (myPlugins.find(theFeatureID) != myPlugins.end()) {
25     if (myPluginObjs.find(myPlugins[theFeatureID]) == myPluginObjs.end()) {
26       // load plugin library if not yet done
27       myCurrentPluginName = myPlugins[theFeatureID];
28       loadLibrary(myCurrentPluginName);
29     }
30     if (myPluginObjs.find(myCurrentPluginName) != myPluginObjs.end()) {
31       std::shared_ptr<ModelAPI_Feature> aCreated = 
32         myPluginObjs[myCurrentPluginName]->createFeature(theFeatureID);
33       return aCreated;
34     }
35   }
36
37   return std::shared_ptr<ModelAPI_Feature>(); // return nothing
38 }
39
40 std::shared_ptr<ModelAPI_Document> Model_PluginManager::rootDocument()
41 {
42   return std::shared_ptr<ModelAPI_Document>(
43     Model_Application::getApplication()->getDocument("root"));
44 }
45
46 shared_ptr<ModelAPI_Document> Model_PluginManager::currentDocument()
47 {
48   if (!myCurrentDoc)
49     myCurrentDoc = rootDocument();
50   return myCurrentDoc;
51 }
52
53 void Model_PluginManager::setCurrentDocument(shared_ptr<ModelAPI_Document> theDoc)
54 {
55   myCurrentDoc = theDoc;
56 }
57
58 Model_PluginManager::Model_PluginManager()
59 {
60   myPluginsInfoLoaded = false;
61   //TODO(sbh): Implement static method to extract event id [SEID]
62   static Event_ID aFeatureEvent = Event_Loop::eventByName("FeatureEvent");
63
64   ModelAPI_PluginManager::SetPluginManager(std::shared_ptr<ModelAPI_PluginManager>(this));
65   // register the configuration reading listener
66   Event_Loop* aLoop = Event_Loop::loop();
67   aLoop->registerListener(this, aFeatureEvent);
68 }
69
70 void Model_PluginManager::processEvent(const Event_Message* theMessage)
71 {
72   const Config_FeatureMessage* aMsg =
73     dynamic_cast<const Config_FeatureMessage*>(theMessage);
74   if (aMsg) {
75     // proccess the plugin info, load plugin
76     if (myPlugins.find(aMsg->id()) == myPlugins.end()) {
77       myPlugins[aMsg->id()] = aMsg->pluginLibrary();
78     }
79   }
80   // plugins information was started to load, so, it will be loaded
81   myPluginsInfoLoaded = true;
82 }
83
84 void Model_PluginManager::LoadPluginsInfo()
85 {
86   if (myPluginsInfoLoaded) // nothing to do
87     return;
88
89   // Read plugins information from XML files
90   Config_ModuleReader aXMLReader;
91   aXMLReader.setAutoImport(true);
92   aXMLReader.readAll();
93 }
94
95 void Model_PluginManager::registerPlugin(ModelAPI_Plugin* thePlugin)
96 {
97   myPluginObjs[myCurrentPluginName] = thePlugin;
98 }