From 35a2de86856ade4e80c81bb602068d79c8e9415a Mon Sep 17 00:00:00 2001
From: kosta <kleontev@Debian11.kleontev.virtualbox.org>
Date: Fri, 10 Feb 2023 21:48:10 +0100
Subject: [PATCH] [bos #32523][EDF] SALOME on Demand GUI. Added update greyed
 out status for extension in Remove button menu.

---
 src/LightApp/LightApp_ModuleAction.cxx | 68 +++++++++++++++++++++++---
 src/LightApp/LightApp_ModuleAction.h   |  1 +
 2 files changed, 63 insertions(+), 6 deletions(-)

diff --git a/src/LightApp/LightApp_ModuleAction.cxx b/src/LightApp/LightApp_ModuleAction.cxx
index 053614366..e7a70c10b 100644
--- a/src/LightApp/LightApp_ModuleAction.cxx
+++ b/src/LightApp/LightApp_ModuleAction.cxx
@@ -33,6 +33,12 @@
 
 #include <utilities.h>
 
+// Prevent slot compilation error
+#pragma push_macro("slots")
+#undef slots
+#include "PyInterp_Utils.h"
+#pragma pop_macro("slots")
+
 /*!
   \class LightApp_ModuleAction::ActionSet
   \brief Internal class to represent list of modules buttons.
@@ -433,16 +439,12 @@ void LightApp_ModuleAction::insertExtension(const QString& name)
 
   QAction* inserted = new QAction(name);
 
-  // Grey out Base extension, so it's impossible to remove it
-  if (!QString::compare("Base", name, Qt::CaseInsensitive))
-  {
-    inserted->setEnabled(false);
-  }
-
   myRemove->menu()->insertAction(insertBefore, inserted);
   connect(inserted, SIGNAL(triggered()), myMapper, SLOT(map()));
   myMapper->setMapping(inserted, name);
 
+  updateExtActions();
+
   MESSAGE("An extension's action was inserted");
 }
 
@@ -469,6 +471,7 @@ void LightApp_ModuleAction::removeExtension(const QString& name)
 
   myRemove->setEnabled(!myRemove->menu()->actions().isEmpty());
 
+  updateExtActions();
   update();
 }
 
@@ -641,6 +644,59 @@ void LightApp_ModuleAction::update( QtxComboBox* cb )
   cb->blockSignals( blocked );
 }
 
+/*!
+  \brief Update extension actions based on dependencies.
+  \internal
+  \param
+*/
+void LightApp_ModuleAction::updateExtActions()
+{
+  MESSAGE("Check dependencies to update extensions actions...");
+
+  // It should be set on the app start
+  auto extRootDir = getenv("SALOME_APPLICATION_DIR");
+  if (!extRootDir)
+  {
+    MESSAGE("Cannot get SALOME_APPLICATION_DIR env variable! Cancel adding selected extensions.");
+    return;
+  }
+  SCRUTE(extRootDir);
+
+  // Import Python module that manages SALOME extensions.
+  PyLockWrapper lck; // acquire GIL
+  PyObjWrapper extensionQuery = PyImport_ImportModule((char*)"SalomeOnDemandTK.extension_query");
+  PyObjWrapper extCanRemoveDict = PyObject_CallMethod(extensionQuery, (char*)"ext_canremove_flags", (char*)"s", extRootDir);
+  if (!extCanRemoveDict || extCanRemoveDict == Py_None)
+  {
+    MESSAGE("Couldn't get <ext>:<can_remove> dictionary from SalomeOnDemandTK.extension_query! Return.");
+    return;
+  }
+
+  // Iterate extensions' actions to disable ones we can't remove because of dependencies.
+  foreach(QAction* curAction, myRemove->menu()->actions())
+  {
+    const std::string action_name = curAction->text().toStdString();
+    SCRUTE(action_name);
+
+    PyObject* canRemoveObject = PyDict_GetItemString(extCanRemoveDict, action_name.c_str());
+    if (!canRemoveObject)
+    {
+      MESSAGE("Couldn't get can remove flag from dictionary! Skip.");
+      continue;
+    }
+
+    const int isTrueRes = PyObject_IsTrue(canRemoveObject);
+    if (isTrueRes == -1)
+    {
+      MESSAGE("PyObject_IsTrue() failed. Using false value instead.");
+    }
+    const bool canRemove = isTrueRes == 1;
+    SCRUTE(canRemove);
+
+    curAction->setEnabled(canRemove);
+  }
+}
+
 /*!
   \brief Get an action corresponding to the active module.
   \internal
diff --git a/src/LightApp/LightApp_ModuleAction.h b/src/LightApp/LightApp_ModuleAction.h
index 6e2ab620d..c71524f3b 100644
--- a/src/LightApp/LightApp_ModuleAction.h
+++ b/src/LightApp/LightApp_ModuleAction.h
@@ -94,6 +94,7 @@ signals:
 private:
   void             update();
   void             update( QtxComboBox* );
+  void             updateExtActions();
 
   QAction*         active() const;
   void             activate( int, bool = true );
-- 
2.39.2