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/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* gnm-python.c :
*
* Author: Zbigniew Chyla (cyba@gnome.pl)
*/
#include <gnumeric-config.h>
#include "gnm-py-interpreter.h"
#include "gnm-python.h"
#include "py-gnumeric.h"
#include <goffice/goffice.h>
#include <goffice/app/module-plugin-defs.h>
#include <gsf/gsf-impl-utils.h>
#include <glib/gi18n-lib.h>
#include <unistd.h>
#include <Python.h>
struct _GnmPython {
GObject parent_instance;
GnmPyInterpreter *current_interpreter, *default_interpreter;
GSList *interpreters;
};
typedef struct {
GObjectClass parent_class;
void (*created_interpreter) (GnmPython *gpy, GnmPyInterpreter *interpreter);
void (*switched_interpreter) (GnmPython *gpy, GnmPyInterpreter *interpreter);
} GnmPythonClass;
enum {
CREATED_INTERPRETER_SIGNAL,
SWITCHED_INTERPRETER_SIGNAL,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
static GObjectClass *parent_class = NULL;
static GnmPython *gnm_python_obj = NULL;
static int
cb_test_signals (void)
{
if (PyErr_CheckSignals () < 0)
exit (0);
return TRUE;
}
static void
gnm_python_init (GnmPython *gpy)
{
gpy->default_interpreter = gnm_py_interpreter_new (NULL);
gpy->current_interpreter = gpy->default_interpreter;
gpy->interpreters = g_slist_append (NULL, gpy->default_interpreter);
g_return_if_fail (gnm_python_obj == NULL);
gnm_python_obj = gpy;
g_timeout_add_full (G_PRIORITY_LOW, 100, (GSourceFunc) cb_test_signals,
gnm_python_obj, NULL);
}
static void
gnm_python_finalize (GObject *obj)
{
GnmPython *gpy = GNM_PYTHON (obj);
g_source_remove_by_user_data (gnm_python_obj);
if (gpy->default_interpreter != NULL) {
GO_SLIST_FOREACH (gpy->interpreters, GnmPyInterpreter, interpreter,
if (interpreter != gpy->default_interpreter) {
gnm_py_interpreter_destroy (interpreter, gpy->default_interpreter);
}
);
gnm_py_interpreter_switch_to (gpy->default_interpreter);
g_object_unref (gpy->default_interpreter);
gpy->default_interpreter = NULL;
}
gnm_python_obj = NULL;
parent_class->finalize (obj);
}
static void
gnm_python_class_init (GObjectClass *gobject_class)
{
parent_class = g_type_class_peek_parent (gobject_class);
gobject_class->finalize = gnm_python_finalize;
signals[CREATED_INTERPRETER_SIGNAL] =
g_signal_new (
"created_interpreter",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GnmPythonClass, created_interpreter),
NULL, NULL,
g_cclosure_marshal_VOID__POINTER,
G_TYPE_NONE,
1, G_TYPE_POINTER);
signals[SWITCHED_INTERPRETER_SIGNAL] =
g_signal_new (
"switched_interpreter",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GnmPythonClass, switched_interpreter),
NULL, NULL,
g_cclosure_marshal_VOID__POINTER,
G_TYPE_NONE,
1, G_TYPE_POINTER);
}
/* ---------- */
GnmPython *
gnm_python_object_get (GOErrorInfo **err)
{
GO_INIT_RET_ERROR_INFO (err);
if (!Py_IsInitialized ()) {
Py_Initialize ();
#ifdef WITH_THREAD
PyEval_InitThreads ();
#endif
}
if (err && *err != NULL) {
Py_Finalize ();
return NULL;
}
if (gnm_python_obj == NULL) {
(void) g_object_new (GNM_PYTHON_TYPE, NULL);
} else {
g_object_ref (gnm_python_obj);
}
return gnm_python_obj;
}
static void
cb_interpreter_switched (GnmPyInterpreter *interpreter, GnmPython *gpy)
{
g_return_if_fail (GNM_IS_PY_INTERPRETER (interpreter));
g_return_if_fail (GNM_IS_PYTHON (gpy));
gpy->current_interpreter = interpreter;
g_signal_emit (
gpy, signals[SWITCHED_INTERPRETER_SIGNAL], 0, interpreter);
}
GnmPyInterpreter *
gnm_python_new_interpreter (GnmPython *gpy, GOPlugin *plugin)
{
GnmPyInterpreter *interpreter;
g_return_val_if_fail (GNM_IS_PYTHON (gpy), NULL);
g_return_val_if_fail (GO_IS_PLUGIN (plugin), NULL);
interpreter = gnm_py_interpreter_new (plugin);
GO_SLIST_PREPEND (gpy->interpreters, interpreter);
gpy->current_interpreter = interpreter;
g_signal_connect (
interpreter, "set_current", G_CALLBACK (cb_interpreter_switched), gpy);
g_signal_emit (gpy, signals[CREATED_INTERPRETER_SIGNAL], 0, interpreter);
g_object_ref (gpy);
return interpreter;
}
void
gnm_python_destroy_interpreter (GnmPython *gpy, GnmPyInterpreter *interpreter)
{
g_return_if_fail (GNM_IS_PYTHON (gpy));
g_return_if_fail (GNM_IS_PY_INTERPRETER (interpreter));
g_return_if_fail (interpreter != gpy->default_interpreter);
GO_SLIST_REMOVE (gpy->interpreters, interpreter);
gnm_py_interpreter_destroy (interpreter, gpy->default_interpreter);
g_object_unref (gpy);
}
GnmPyInterpreter *
gnm_python_get_current_interpreter (GnmPython *gpy)
{
g_return_val_if_fail (GNM_IS_PYTHON (gpy), NULL);
return gpy->current_interpreter;
}
GnmPyInterpreter *
gnm_python_get_default_interpreter (GnmPython *gpy)
{
g_return_val_if_fail (GNM_IS_PYTHON (gpy), NULL);
return gpy->default_interpreter;
}
GSList *
gnm_python_get_interpreters (GnmPython *gpy)
{
g_return_val_if_fail (GNM_IS_PYTHON (gpy), NULL);
return gpy->interpreters;
}
void
gnm_python_clear_error_if_needed (GnmPython *gpy)
{
g_return_if_fail (GNM_IS_PYTHON (gpy));
if (PyErr_Occurred () != NULL) {
PyErr_Clear ();
}
}
GSF_DYNAMIC_CLASS (GnmPython, gnm_python,
gnm_python_class_init, gnm_python_init,
G_TYPE_OBJECT)
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