source: vbox/trunk/src/libs/xpcom18a4/python/src/PyIComponentManager.cpp

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Python XPCOM language bindings.
 *
 * The Initial Developer of the Original Code is
 * ActiveState Tool Corp.
 * Portions created by the Initial Developer are Copyright (C) 2000
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Mark Hammond <mhammond@skippinet.com.au> (original author)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

//
// This code is part of the XPCOM extensions for Python.
//
// Written May 2000 by Mark Hammond.
//
// Based heavily on the Python COM support, which is
// (c) Mark Hammond and Greg Stein.
//
// (c) 2000, ActiveState corp.

#include "PyXPCOM_std.h"

static nsIComponentManager *GetI(PyObject *self) {
        static const nsIID iid = NS_GET_IID(nsIComponentManager);

        if (!Py_nsISupports::Check(self, iid)) {
                PyErr_SetString(PyExc_TypeError, "This object is not the correct interface");
                return NULL;
        }
        return NS_STATIC_CAST(nsIComponentManager*, Py_nsISupports::GetI(self));
}

static PyObject *PyCreateInstanceByContractID(PyObject *self, PyObject *args)
{
        // second arg to CreateInstanceByContractID is a "delegate" - we
        // aren't sure of the semantics of this yet and it seems rarely used,
        // so we just punt for now.
        char *pid, *notyet = NULL;
        PyObject *obIID = NULL;
        if (!PyArg_ParseTuple(args, "s|zO", &pid, &notyet, &obIID))
                return NULL;
        if (notyet != NULL) {
                PyErr_SetString(PyExc_ValueError, "2nd arg must be none");
                return NULL;
        }
        nsIComponentManager *pI = GetI(self);
        if (pI==NULL)
                return NULL;

        nsIID   iid;
        if (obIID==NULL)
                iid = NS_GET_IID(nsISupports);
        else
                if (!Py_nsIID::IIDFromPyObject(obIID, &iid))
                        return NULL;

        nsCOMPtr<nsISupports> pis;
        nsresult r;
        Py_BEGIN_ALLOW_THREADS;
        r = pI->CreateInstanceByContractID(pid, NULL, iid, getter_AddRefs(pis));
        Py_END_ALLOW_THREADS;
        if ( NS_FAILED(r) )
                return PyXPCOM_BuildPyException(r);

        /* Return a type based on the IID (with no extra ref) */
        return Py_nsISupports::PyObjectFromInterface(pis, iid, PR_FALSE);
}

static PyObject *PyCreateInstance(PyObject *self, PyObject *args)
{
        char *notyet = NULL;
        PyObject *obClassID = NULL, *obIID = NULL;
        if (!PyArg_ParseTuple(args, "O|zO", &obClassID, &notyet, &obIID))
                return NULL;
        if (notyet != NULL) {
                PyErr_SetString(PyExc_ValueError, "2nd arg must be none");
                return NULL;
        }
        nsIComponentManager *pI = GetI(self);
        if (pI==NULL)
                return NULL;

        nsIID classID;
        if (!Py_nsIID::IIDFromPyObject(obClassID, &classID))
                return NULL;
        nsIID   iid;
        if (obIID==NULL)
                iid = NS_GET_IID(nsISupports);
        else
                if (!Py_nsIID::IIDFromPyObject(obIID, &iid))
                        return NULL;

        nsCOMPtr<nsISupports> pis;
        nsresult r;
        Py_BEGIN_ALLOW_THREADS;
        r = pI->CreateInstance(classID, NULL, iid, getter_AddRefs(pis));
        Py_END_ALLOW_THREADS;
        if ( NS_FAILED(r) )
                return PyXPCOM_BuildPyException(r);

        /* Return a type based on the IID (with no extra ref) */
        return Py_nsISupports::PyObjectFromInterface(pis, iid, PR_FALSE);
}

struct PyMethodDef 
PyMethods_IComponentManager[] =
{
        { "createInstanceByContractID", PyCreateInstanceByContractID, 1},
        { "createInstance",             PyCreateInstance,             1},
        {NULL}
};