class PyDeadObjectError(AttributeError):
pass
-
class _wxPyDeadObject(object):
"""
Instances of wx objects that are OOR capable will have their __class__
reprStr = "wxPython wrapper for DELETED %s object! (The C++ object no longer exists.)"
attrStr = "The C++ part of the %s object has been deleted, attribute access no longer allowed."
- def __repr__( self ):
+ def __repr__(self):
if not hasattr(self, "_name"):
self._name = "[unknown]"
return self.reprStr % self._name
- def __getattr__( self, *args ):
+ def __getattr__(self, *args):
if not hasattr(self, "_name"):
self._name = "[unknown]"
- raise PyDeadObjectError( self.attrStr % self._name )
+ raise PyDeadObjectError(self.attrStr % self._name)
+
+ def __nonzero__(self):
+ return 0
+
+
+
+class PyUnbornObjectError(AttributeError):
+ pass
+
+class _wxPyUnbornObject(object):
+ """
+ Some stock objects are created when the wx.core module is
+ imported, but their C++ instance is not created until the wx.App
+ object is created and initialized. These object instances will
+ temporarily have their __class__ changed to this class so an
+ exception will be raised if they are used before the C++ instance
+ is ready.
+ """
+
+ reprStr = "wxPython wrapper for UNBORN object! (The C++ object is not initialized yet.)"
+ attrStr = "The C++ part of this object has not been initialized, attribute access not allowed."
+
+ def __repr__(self):
+ #if not hasattr(self, "_name"):
+ # self._name = "[unknown]"
+ return self.reprStr #% self._name
+
+ def __getattr__(self, *args):
+ #if not hasattr(self, "_name"):
+ # self._name = "[unknown]"
+ raise PyUnbornObjectError(self.attrStr) # % self._name )
def __nonzero__(self):
return 0
from controls import *
from misc import *
+
+# Fixup the stock objects since they can't be used yet. (They will be
+# restored in wx.PyApp.OnInit.)
+_core._wxPyFixStockObjects()
+
#----------------------------------------------------------------------------
#----------------------------------------------------------------------------
// The stock objects were all NULL when they were loaded into
// SWIG generated proxies, so re-init those now...
- wxPy_ReinitStockObjects(False);
+ wxPy_ReinitStockObjects(3);
// It's now ok to generate exceptions for assertion errors.
wxPythonApp->SetStartupComplete(True);
wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
// Init the stock objects to a non-NULL value so SWIG doesn't create them as None
- wxPy_ReinitStockObjects(True);
+ wxPy_ReinitStockObjects(1);
}
//---------------------------------------------------------------------------
-// The stock objects are no longer created when the wxc module is imported, but
-// only after the app object has been created. This function will be called before
-// OnInit is called so we can hack the new pointer values into the obj.this attributes.
+// The stock objects are no longer created when the wxc module is imported,
+// but only after the app object has been created. The
+// wxPy_ReinitStockObjects function will be called 3 times to pass the stock
+// objects though various stages of evolution:
+//
+// pass 1: Set all the pointers to a non-NULL value so the Python proxy
+// object will be created (otherwise it will just use None.)
+//
+// pass 2: After the module has been imported and the python proxys have
+// been created, then set the __class__ to be _wxPyUnbornObject so
+// it will catch any access to the object and will raise an exception.
+//
+// pass 3: Finally, from OnInit patch things up so the stock objects can
+// be used.
+
+
+PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
+{
+ wxPy_ReinitStockObjects(2);
+ RETURN_NONE();
+}
+
-void wxPy_ReinitStockObjects(bool init)
+static void rsoPass2(const char* name)
{
+ static PyObject* unbornObjectClass = NULL;
PyObject* obj;
+
+ if (unbornObjectClass == NULL) {
+ unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
+ Py_INCREF(unbornObjectClass);
+ }
+
+ // Find the object instance
+ obj = PyDict_GetItemString(wxPython_dict, dropwx(name));
+ wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
+ wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
+
+ // Change its class
+ PyObject_SetAttrString(obj, "__class__", unbornObjectClass);
+
+}
+
+static void rsoPass3(const char* name, const char* classname, void* ptr)
+{
+ PyObject* obj;
+ PyObject* classobj;
PyObject* ptrobj;
+ // Find the object instance
+ obj = PyDict_GetItemString(wxPython_dict, dropwx(name));
+ wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
+ wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
+
+ // Find the class object and put it back in the instance
+ classobj = PyDict_GetItemString(wxPython_dict, dropwx(classname));
+ wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
+ PyObject_SetAttrString(obj, "__class__", classobj);
+
+ // Rebuild the .this swigified pointer with the new value of the C++ pointer
+ ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
+ PyObject_SetAttrString(obj, "this", ptrobj);
+ Py_DECREF(ptrobj);
+}
+
+
+
+void wxPy_ReinitStockObjects(int pass)
+{
+ PyObject* obj;
+ PyObject* ptrobj;
#define REINITOBJ(name, classname) \
- if ( init ) { name = (classname*)0xC0C0C0C0; } else { \
- obj = PyDict_GetItemString(wxPython_dict, dropwx(#name)); \
- wxCHECK_RET(obj != NULL, wxT("Unable to find stock object for " #name)) \
- wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance: " #name)); \
- ptrobj = wxPyMakeSwigPtr((void*)name, wxT(#classname)); \
- PyObject_SetAttrString(obj, "this", ptrobj); \
- Py_DECREF(ptrobj); }
+ if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
+ else if (pass == 2) { rsoPass2(#name); } \
+ else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
+
#define REINITOBJ2(name, classname) \
- if ( init ) { } else { \
- obj = PyDict_GetItemString(wxPython_dict, dropwx(#name)); \
- wxCHECK_RET(obj != NULL, wxT("Unable to find stock object for " #name)) \
- wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance: " #name)); \
- ptrobj = wxPyMakeSwigPtr((void*)&name, wxT(#classname)); \
- PyObject_SetAttrString(obj, "this", ptrobj); \
- Py_DECREF(ptrobj); }
+ if (pass == 1) { } \
+ else if (pass == 2) { rsoPass2(#name); } \
+ else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
REINITOBJ(wxNORMAL_FONT, wxFont);
projects / wxWidgets.git / commitdiff
