+
+//---------------------------------------------------------------------------
+
+// Check for existence of a wxApp, setting an exception if there isn't one.
+// This doesn't need to aquire the GIL because it should only be called from
+// an %exception before the lock is released.
+
+bool wxPyCheckForApp() {
+ if (wxTheApp != NULL)
+ return true;
+ else {
+ PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
+ return false;
+ }
+}
+
+//---------------------------------------------------------------------------
+
+void wxPyUserData_dtor(wxPyUserData* self) {
+ if (! wxPyDoingCleanup) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ Py_DECREF(self->m_obj);
+ self->m_obj = NULL;
+ wxPyEndBlockThreads(blocked);
+ }
+}
+
+
+void wxPyClientData_dtor(wxPyClientData* self) {
+ if (! wxPyDoingCleanup) { // Don't do it during cleanup as Python
+ // may have already garbage collected the object...
+ if (self->m_incRef) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ Py_DECREF(self->m_obj);
+ wxPyEndBlockThreads(blocked);
+ }
+ self->m_obj = NULL;
+ }
+}
+
+
+
+// This is called when an OOR controled object is being destroyed. Although
+// the C++ object is going away there is no way to force the Python object
+// (and all references to it) to die too. This causes problems (crashes) in
+// wxPython when a python shadow object attempts to call a C++ method using
+// the now bogus pointer... So to try and prevent this we'll do a little black
+// magic and change the class of the python instance to a class that will
+// raise an exception for any attempt to call methods with it. See
+// _wxPyDeadObject in _core_ex.py for the implementation of this class.
+void wxPyOORClientData_dtor(wxPyOORClientData* self) {
+
+ static PyObject* deadObjectClass = NULL;
+
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ if (deadObjectClass == NULL) {
+ deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
+ // TODO: Can not wxASSERT here because inside a wxPyBeginBlock Threads,
+ // will lead to a deadlock when it tries to aquire the GIL again.
+ //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
+ Py_INCREF(deadObjectClass);
+ }
+
+
+ // Only if there is more than one reference to the object and we are
+ // holding the OOR reference:
+ if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
+ // bool isInstance = wxPyInstance_Check(self->m_obj);
+ // TODO same here
+ //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
+
+ // Call __del__, if there is one.
+ PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
+ if (func) {
+ PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
+ Py_XDECREF(rv);
+ Py_DECREF(func);
+ }
+ if (PyErr_Occurred())
+ PyErr_Clear(); // just ignore it for now
+
+
+ PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
+ if (dict) {
+ // Clear the instance's dictionary
+ PyDict_Clear(dict);
+
+ // put the name of the old class into the instance, and then reset the
+ // class to be the dead class.
+ PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
+ PyObject* name = PyObject_GetAttrString(klass, "__name__");
+ PyDict_SetItemString(dict, "_name", name);
+ PyObject_SetAttrString(self->m_obj, "__class__", deadObjectClass);
+ //Py_INCREF(deadObjectClass);
+ Py_DECREF(klass);
+ Py_DECREF(name);
+ }
+ }
+
+ // m_obj is DECREF'd in the base class dtor...
+ wxPyEndBlockThreads(blocked);
+}
+
+
+//---------------------------------------------------------------------------
+// Stuff used by OOR to find the right wxPython class type to return and to
+// build it.
+
+
+// The pointer type map is used when the "pointer" type name generated by SWIG
+// is not the same as the shadow class name, for example wxPyTreeCtrl
+// vs. wxTreeCtrl. It needs to be referenced in Python as well as from C++,
+// so we'll just make it a Python dictionary in the wx module's namespace.
+// (See __wxSetDictionary)
+void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
+ if (! wxPyPtrTypeMap)
+ wxPyPtrTypeMap = PyDict_New();
+ PyDict_SetItemString(wxPyPtrTypeMap,
+ (char*)commonName,
+ PyString_FromString((char*)ptrName));
projects / wxWidgets.git / blobdiff