[gedit] Added GeditAppActivatable interface

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 56a790a6851ebc98766cc4aca27cb32dde1b41bf
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Sun Aug 22 19:35:20 2010 +0200

    Added GeditAppActivatable interface

 gedit/Makefile.am             |    2 +
 gedit/gedit-app-activatable.c |  108 +++++++++++++++++++++++++++++++++++++++++
 gedit/gedit-app-activatable.h |   61 +++++++++++++++++++++++
 gedit/gedit-app.c             |   54 ++++++++++++++++++++-
 4 files changed, 223 insertions(+), 2 deletions(-)
---
diff --git a/gedit/Makefile.am b/gedit/Makefile.am
index cd4cd6e..3240cb1 100644
--- a/gedit/Makefile.am
+++ b/gedit/Makefile.am
@@ -129,6 +129,7 @@ NOINST_H_FILES =			\
 
 INST_H_FILES =				\
 	gedit-app.h			\
+	gedit-app-activatable.h		\
 	gedit-commands.h		\
 	gedit-debug.h			\
 	gedit-document.h 		\
@@ -159,6 +160,7 @@ header_DATA = 				\
 	$(INST_H_FILES)
 
 libgedit_private_la_SOURCES =		\
+	gedit-app-activatable.c		\
 	gedit-view-activatable.c	\
 	gedit-window-activatable.c
 
diff --git a/gedit/gedit-app-activatable.c b/gedit/gedit-app-activatable.c
new file mode 100644
index 0000000..7add471
--- /dev/null
+++ b/gedit/gedit-app-activatable.c
@@ -0,0 +1,108 @@
+/*
+ * gedit-app-activatable.h
+ * This file is part of gedit
+ *
+ * Copyright (C) 2010 Steve Frécinaux
+ * Copyright (C) 2010 Jesse van den Kieboom
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Library General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "gedit-app-activatable.h"
+#include "gedit-app.h"
+
+/**
+ * SECTION:gedit-app-activatable
+ * @short_description: Interface for activatable extensions on apps
+ * @see_also: #PeasExtensionSet
+ *
+ * #GeditAppActivatable is an interface which should be implemented by
+ * extensions that should be activated on a gedit application.
+ **/
+
+G_DEFINE_INTERFACE(GeditAppActivatable, gedit_app_activatable, G_TYPE_OBJECT)
+
+void
+gedit_app_activatable_default_init (GeditAppActivatableInterface *iface)
+{
+	static gboolean initialized = FALSE;
+
+	if (!initialized)
+	{
+		/**
+		 * GeditAppActivatable:app:
+		 *
+		 * The app property contains the gedit app for this
+		 * #GeditAppActivatable instance.
+		 */
+		g_object_interface_install_property (iface,
+		                                     g_param_spec_object ("app",
+		                                                          "App",
+		                                                          "The gedit app",
+		                                                          GEDIT_TYPE_APP,
+		                                                          G_PARAM_READWRITE |
+		                                                          G_PARAM_CONSTRUCT_ONLY |
+		                                                          G_PARAM_STATIC_STRINGS));
+
+		initialized = TRUE;
+	}
+}
+
+/**
+ * gedit_app_activatable_activate:
+ * @activatable: A #GeditAppActivatable.
+ *
+ * Activates the extension on the application.
+ */
+void
+gedit_app_activatable_activate (GeditAppActivatable *activatable)
+{
+	GeditAppActivatableInterface *iface;
+
+	g_return_if_fail (GEDIT_IS_APP_ACTIVATABLE (activatable));
+
+	iface = GEDIT_APP_ACTIVATABLE_GET_IFACE (activatable);
+
+	if (iface->activate != NULL)
+	{
+		iface->activate (activatable);
+	}
+}
+
+/**
+ * gedit_app_activatable_deactivate:
+ * @activatable: A #GeditAppActivatable.
+ *
+ * Deactivates the extension from the application.
+ *
+ */
+void
+gedit_app_activatable_deactivate (GeditAppActivatable *activatable)
+{
+	GeditAppActivatableInterface *iface;
+
+	g_return_if_fail (GEDIT_IS_APP_ACTIVATABLE (activatable));
+
+	iface = GEDIT_APP_ACTIVATABLE_GET_IFACE (activatable);
+
+	if (iface->deactivate != NULL)
+	{
+		iface->deactivate (activatable);
+	}
+}
diff --git a/gedit/gedit-app-activatable.h b/gedit/gedit-app-activatable.h
new file mode 100644
index 0000000..f9a9bf8
--- /dev/null
+++ b/gedit/gedit-app-activatable.h
@@ -0,0 +1,61 @@
+/*
+ * gedit-app-activatable.h
+ * This file is part of gedit
+ *
+ * Copyright (C) 2010 - Steve Frécinaux
+ * Copyright (C) 2010 - Jesse van den Kieboom
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Library General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GEDIT_APP_ACTIVATABLE_H__
+#define __GEDIT_APP_ACTIVATABLE_H__
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+/*
+ * Type checking and casting macros
+ */
+#define GEDIT_TYPE_APP_ACTIVATABLE		(gedit_app_activatable_get_type ())
+#define GEDIT_APP_ACTIVATABLE(obj)		(G_TYPE_CHECK_INSTANCE_CAST ((obj), GEDIT_TYPE_APP_ACTIVATABLE, GeditAppActivatable))
+#define GEDIT_APP_ACTIVATABLE_IFACE(obj)	(G_TYPE_CHECK_CLASS_CAST ((obj), GEDIT_TYPE_APP_ACTIVATABLE, GeditAppActivatableInterface))
+#define GEDIT_IS_APP_ACTIVATABLE(obj)	(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEDIT_TYPE_APP_ACTIVATABLE))
+#define GEDIT_APP_ACTIVATABLE_GET_IFACE(obj)	(G_TYPE_INSTANCE_GET_INTERFACE ((obj), GEDIT_TYPE_APP_ACTIVATABLE, GeditAppActivatableInterface))
+
+typedef struct _GeditAppActivatable           GeditAppActivatable; /* dummy typedef */
+typedef struct _GeditAppActivatableInterface  GeditAppActivatableInterface;
+
+struct _GeditAppActivatableInterface
+{
+	GTypeInterface g_iface;
+
+	/* Virtual public methods */
+	void	(*activate)		(GeditAppActivatable *activatable);
+	void	(*deactivate)		(GeditAppActivatable *activatable);
+};
+
+/*
+ * Public methods
+ */
+GType	 gedit_app_activatable_get_type	(void)  G_GNUC_CONST;
+
+void	 gedit_app_activatable_activate	(GeditAppActivatable *activatable);
+void	 gedit_app_activatable_deactivate	(GeditAppActivatable *activatable);
+
+G_END_DECLS
+
+#endif /* __GEDIT_APP_ACTIVATABLE_H__ */
diff --git a/gedit/gedit-app.c b/gedit/gedit-app.c
index 5792bac..8847c30 100644
--- a/gedit/gedit-app.c
+++ b/gedit/gedit-app.c
@@ -36,6 +36,7 @@
 #include <unistd.h>
 
 #include <glib/gi18n.h>
+#include <libpeas/peas-extension-set.h>
 
 #include "gedit-app.h"
 #include "gedit-commands.h"
@@ -45,6 +46,8 @@
 #include "gedit-enum-types.h"
 #include "gedit-dirs.h"
 #include "gedit-settings.h"
+#include "gedit-app-activatable.h"
+#include "gedit-plugins-engine.h"
 
 #ifdef OS_OSX
 #include "gedit-app-osx.h"
@@ -80,6 +83,8 @@ struct _GeditAppPrivate
 	
 	GSettings         *settings;
 	GSettings         *window_settings;
+
+	PeasExtensionSet  *extensions;
 };
 
 G_DEFINE_ABSTRACT_TYPE(GeditApp, gedit_app, G_TYPE_INITIALLY_UNOWNED)
@@ -102,7 +107,7 @@ gedit_app_finalize (GObject *object)
 static void
 gedit_app_dispose (GObject *object)
 {
-	GeditApp *app = GEDIT_APP (object); 
+	GeditApp *app = GEDIT_APP (object);
 
 	if (app->priv->window_settings != NULL)
 	{
@@ -116,6 +121,16 @@ gedit_app_dispose (GObject *object)
 		app->priv->settings = NULL;
 	}
 
+	if (app->priv->extensions != NULL)
+	{
+		peas_extension_set_call (app->priv->extensions,
+					 "deactivate",
+					 app);
+
+		g_object_unref (app->priv->extensions);
+		app->priv->extensions = NULL;
+	}
+
 	G_OBJECT_CLASS (gedit_app_parent_class)->dispose (object);
 }
 
@@ -474,18 +489,53 @@ save_print_settings (GeditApp *app)
 }
 
 static void
+extension_added (PeasExtensionSet *extensions,
+		 PeasPluginInfo   *info,
+		 PeasExtension    *exten,
+		 GeditApp         *app)
+{
+	peas_extension_call (exten, "activate");
+}
+
+static void
+extension_removed (PeasExtensionSet *extensions,
+		   PeasPluginInfo   *info,
+		   PeasExtension    *exten,
+		   GeditApp         *app)
+{
+	peas_extension_call (exten, "deactivate");
+}
+
+static void
 gedit_app_init (GeditApp *app)
 {
 	app->priv = GEDIT_APP_GET_PRIVATE (app);
 
 	load_accels ();
-	
+
 	/* Load settings */
 	app->priv->settings = gedit_settings_new ();
 	app->priv->window_settings = g_settings_new ("org.gnome.gedit.state.window");
 
 	/* initial lockdown state */
 	app->priv->lockdown = gedit_settings_get_lockdown (GEDIT_SETTINGS (app->priv->settings));
+
+	app->priv->extensions = peas_extension_set_new (PEAS_ENGINE (gedit_plugins_engine_get_default ()),
+							GEDIT_TYPE_APP_ACTIVATABLE,
+							"app", app,
+							NULL);
+
+	g_signal_connect (app->priv->extensions,
+			  "extension-added",
+			  G_CALLBACK (extension_added),
+			  app);
+
+	g_signal_connect (app->priv->extensions,
+			  "extension-removed",
+			  G_CALLBACK (extension_removed),
+			  app);
+
+	peas_extension_set_call (app->priv->extensions, "activate");
 }
 
 /**