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plugin-loaders/python/gedit-plugin-python.c
Executable file
281
plugin-loaders/python/gedit-plugin-python.c
Executable file
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/*
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* gedit-plugin-python.c
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* This file is part of gedit
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*
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* Copyright (C) 2005 Raphael Slinckx
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* Copyright (C) 2008 Jesse van den Kieboom
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include "gedit-plugin-python.h"
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#include <gedit/gedit-plugin.h>
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#include <gedit/gedit-debug.h>
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#include <pygobject.h>
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#include <string.h>
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#define GEDIT_PLUGIN_PYTHON_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), GEDIT_TYPE_PLUGIN_PYTHON, GeditPluginPythonPrivate))
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static GObjectClass *parent_class;
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struct _GeditPluginPythonPrivate
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{
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PyObject *instance;
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};
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static void gedit_plugin_python_class_init (GeditPluginPythonClass *klass);
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static void gedit_plugin_python_init (GeditPluginPython *plugin);
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G_DEFINE_TYPE (GeditPluginPython, gedit_plugin_python, GEDIT_TYPE_PLUGIN)
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static PyObject *
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call_python_method (GeditPluginPythonPrivate *priv,
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GeditWindow *window,
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gchar *method)
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{
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PyObject *py_ret = NULL;
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g_return_val_if_fail (PyObject_HasAttrString (priv->instance, method), NULL);
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if (window == NULL)
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{
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py_ret = PyObject_CallMethod (priv->instance,
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method,
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NULL);
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}
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else
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{
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py_ret = PyObject_CallMethod (priv->instance,
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method,
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"(N)",
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pygobject_new (G_OBJECT (window)));
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}
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if (!py_ret)
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PyErr_Print ();
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return py_ret;
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}
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static gboolean
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check_py_object_is_gtk_widget (PyObject *py_obj)
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{
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static PyTypeObject *_PyGtkWidget_Type = NULL;
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if (_PyGtkWidget_Type == NULL)
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{
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PyObject *module;
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if ((module = PyImport_ImportModule ("gtk")))
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{
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PyObject *moddict = PyModule_GetDict (module);
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_PyGtkWidget_Type = (PyTypeObject *) PyDict_GetItemString (moddict, "Widget");
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}
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if (_PyGtkWidget_Type == NULL)
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{
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PyErr_SetString(PyExc_TypeError, "could not find Python gtk widget type");
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PyErr_Print();
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return FALSE;
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}
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}
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return PyObject_TypeCheck (py_obj, _PyGtkWidget_Type) ? TRUE : FALSE;
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}
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static void
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impl_update_ui (GeditPlugin *plugin,
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GeditWindow *window)
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{
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PyGILState_STATE state = pyg_gil_state_ensure ();
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GeditPluginPythonPrivate *priv = GEDIT_PLUGIN_PYTHON(plugin)->priv;
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if (PyObject_HasAttrString (priv->instance, "update_ui"))
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{
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PyObject *py_ret = call_python_method (priv, window, "update_ui");
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if (py_ret)
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{
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Py_XDECREF (py_ret);
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}
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}
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else
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GEDIT_PLUGIN_CLASS (parent_class)->update_ui (plugin, window);
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pyg_gil_state_release (state);
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}
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static void
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impl_deactivate (GeditPlugin *plugin,
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GeditWindow *window)
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{
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PyGILState_STATE state = pyg_gil_state_ensure ();
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GeditPluginPythonPrivate *priv = GEDIT_PLUGIN_PYTHON(plugin)->priv;
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if (PyObject_HasAttrString (priv->instance, "deactivate"))
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{
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PyObject *py_ret = call_python_method (priv, window, "deactivate");
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if (py_ret)
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{
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Py_XDECREF (py_ret);
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}
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}
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else
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GEDIT_PLUGIN_CLASS (parent_class)->deactivate (plugin, window);
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pyg_gil_state_release (state);
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}
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static void
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impl_activate (GeditPlugin *plugin,
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GeditWindow *window)
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{
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PyGILState_STATE state = pyg_gil_state_ensure ();
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GeditPluginPythonPrivate *priv = GEDIT_PLUGIN_PYTHON(plugin)->priv;
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if (PyObject_HasAttrString (priv->instance, "activate"))
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{
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PyObject *py_ret = call_python_method (priv, window, "activate");
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if (py_ret)
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{
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Py_XDECREF (py_ret);
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}
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}
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else
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GEDIT_PLUGIN_CLASS (parent_class)->activate (plugin, window);
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pyg_gil_state_release (state);
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}
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static GtkWidget *
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impl_create_configure_dialog (GeditPlugin *plugin)
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{
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PyGILState_STATE state = pyg_gil_state_ensure ();
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GeditPluginPythonPrivate *priv = GEDIT_PLUGIN_PYTHON(plugin)->priv;
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GtkWidget *ret = NULL;
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if (PyObject_HasAttrString (priv->instance, "create_configure_dialog"))
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{
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PyObject *py_ret = call_python_method (priv, NULL, "create_configure_dialog");
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if (py_ret)
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{
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if (check_py_object_is_gtk_widget (py_ret))
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{
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ret = GTK_WIDGET (pygobject_get (py_ret));
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g_object_ref (ret);
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}
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else
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{
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PyErr_SetString(PyExc_TypeError, "return value for create_configure_dialog is not a GtkWidget");
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PyErr_Print();
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}
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Py_DECREF (py_ret);
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}
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}
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else
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ret = GEDIT_PLUGIN_CLASS (parent_class)->create_configure_dialog (plugin);
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pyg_gil_state_release (state);
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return ret;
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}
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static gboolean
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impl_is_configurable (GeditPlugin *plugin)
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{
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PyGILState_STATE state = pyg_gil_state_ensure ();
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GeditPluginPythonPrivate *priv = GEDIT_PLUGIN_PYTHON(plugin)->priv;
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PyObject *dict = priv->instance->ob_type->tp_dict;
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gboolean result;
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if (dict == NULL)
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result = FALSE;
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else if (!PyDict_Check(dict))
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result = FALSE;
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else
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result = PyDict_GetItemString(dict, "create_configure_dialog") != NULL;
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pyg_gil_state_release (state);
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return result;
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}
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void
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_gedit_plugin_python_set_instance (GeditPluginPython *plugin,
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PyObject *instance)
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{
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PyGILState_STATE state = pyg_gil_state_ensure ();
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/* we don't increment the instance here because we are the instance,
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when it dies, we also die */
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plugin->priv->instance = instance;
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pyg_gil_state_release (state);
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}
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PyObject *
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_gedit_plugin_python_get_instance (GeditPluginPython *plugin)
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{
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return plugin->priv->instance;
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}
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static void
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gedit_plugin_python_init (GeditPluginPython *plugin)
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{
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plugin->priv = GEDIT_PLUGIN_PYTHON_GET_PRIVATE(plugin);
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gedit_debug_message (DEBUG_PLUGINS, "Creating Python plugin instance");
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plugin->priv->instance = 0;
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}
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static void
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gedit_plugin_python_finalize (GObject *object)
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{
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PyGILState_STATE state;
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gedit_debug_message (DEBUG_PLUGINS, "Finalizing Python plugin instance");
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state = pyg_gil_state_ensure ();
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Py_XDECREF (GEDIT_PLUGIN_PYTHON(object)->priv->instance);
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pyg_gil_state_release (state);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gedit_plugin_python_class_init (GeditPluginPythonClass *klass)
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{
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GeditPluginClass *plugin_class = GEDIT_PLUGIN_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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g_type_class_add_private (klass, sizeof (GeditPluginPythonPrivate));
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G_OBJECT_CLASS (klass)->finalize = gedit_plugin_python_finalize;
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plugin_class->activate = impl_activate;
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plugin_class->deactivate = impl_deactivate;
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plugin_class->update_ui = impl_update_ui;
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plugin_class->create_configure_dialog = impl_create_configure_dialog;
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plugin_class->is_configurable = impl_is_configurable;
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}
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