App/Gui: move template classes (ViewProvider)ExtensionPythonT to their own header files

2022-03-04 18:54:42 +01:00
parent 4ae1ca58d1
commit ca3c8185e0
17 changed files with 195 additions and 119 deletions
--- a/src/App/ExtensionPython.h
+++ b/src/App/ExtensionPython.h
@@ -0,0 +1,118 @@
+/***************************************************************************
+ *   Copyright (c) 2016 Stefan Tröger <stefantroeger@gmx.net>              *
+ *                                                                         *
+ *   This file is part of the FreeCAD CAx development system.              *
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2 of the License, or (at your option) any later version.      *
+ *                                                                         *
+ *   This library  is distributed in the hope that it will be useful,      *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU Library General Public License for more details.                  *
+ *                                                                         *
+ *   You should have received a copy of the GNU Library General Public     *
+ *   License along with this library; see the file COPYING.LIB. If not,    *
+ *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
+ *   Suite 330, Boston, MA  02111-1307, USA                                *
+ *                                                                         *
+ ***************************************************************************/
+
+
+#ifndef APP_EXTENSIONPYTHON_H
+#define APP_EXTENSIONPYTHON_H
+
+#include <Base/Interpreter.h>
+#include "Extension.h"
+#include "PropertyPythonObject.h"
+
+namespace App {
+
+/**
+ * Generic Python extension class which allows every extension derived
+ * class to behave as a Python extension -- simply by subclassing.
+ */
+template <class ExtensionT>
+class ExtensionPythonT : public ExtensionT
+{
+    EXTENSION_PROPERTY_HEADER(App::ExtensionPythonT<ExtensionT>);
+
+public:
+    typedef ExtensionT Inherited;
+
+    ExtensionPythonT() {
+        ExtensionT::m_isPythonExtension = true;
+        ExtensionT::initExtensionType(ExtensionPythonT::getExtensionClassTypeId());
+    }
+    virtual ~ExtensionPythonT() {
+    }
+};
+
+typedef ExtensionPythonT<App::Extension> ExtensionPython;
+
+// Helper macros to define python extensions
+#define EXTENSION_PROXY_FIRST(function) \
+    Base::PyGILStateLocker lock;\
+    Py::Object result;\
+    try {\
+        Property* proxy = this->getExtendedContainer()->getPropertyByName("Proxy");\
+        if (proxy && proxy->getTypeId() == PropertyPythonObject::getClassTypeId()) {\
+            Py::Object feature = static_cast<PropertyPythonObject*>(proxy)->getValue();\
+            if (feature.hasAttr(std::string("function"))) {\
+                if (feature.hasAttr("__object__")) {\
+                    Py::Callable method(feature.getAttr(std::string("function")));
+
+
+
+
+#define EXTENSION_PROXY_SECOND(function)\
+                    result = method.apply(args);\
+                }\
+                else {\
+                    Py::Callable method(feature.getAttr(std::string("function")));
+
+#define EXTENSION_PROXY_THIRD()\
+                    result = method.apply(args);\
+                }\
+            }\
+        }\
+    }\
+    catch (Py::Exception&) {\
+        Base::PyException e;\
+        e.ReportException();\
+    }
+
+#define EXTENSION_PROXY_NOARG(function)\
+    EXTENSION_PROXY_FIRST(function) \
+    Py::Tuple args;\
+    EXTENSION_PROXY_SECOND(function) \
+    Py::Tuple args(1);\
+    args.setItem(0, Py::Object(this->getExtensionPyObject(), true));\
+    EXTENSION_PROXY_THIRD()
+
+#define EXTENSION_PROXY_ONEARG(function, arg)\
+    EXTENSION_PROXY_FIRST(function) \
+    Py::Tuple args;\
+    args.setItem(0, arg); \
+    EXTENSION_PROXY_SECOND(function) \
+    Py::Tuple args(2);\
+    args.setItem(0, Py::Object(this->getExtensionPyObject(), true));\
+    args.setItem(1, arg); \
+    EXTENSION_PROXY_THIRD()
+
+#define EXTENSION_PYTHON_OVERRIDE_VOID_NOARGS(function)\
+    virtual void function() override {\
+        EXTENSION_PROXY_NOARGS(function)\
+    };
+
+#define EXTENSION_PYTHON_OVERRIDE_OBJECT_NOARGS(function)\
+    virtual PyObject* function() override {\
+        EXTENSION_PROXY_NOARGS(function)\
+        return res.ptr();\
+    };
+
+} //App
+
+#endif // APP_EXTENSIONPYTHON_H