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-rw-r--r--capplet/gsp-app-manager.c593
1 files changed, 593 insertions, 0 deletions
diff --git a/capplet/gsp-app-manager.c b/capplet/gsp-app-manager.c
new file mode 100644
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--- /dev/null
+++ b/capplet/gsp-app-manager.c
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 1999 Free Software Foundation, Inc.
+ * Copyright (C) 2007, 2009 Vincent Untz.
+ * Copyright (C) 2008 Lucas Rocha.
+ * Copyright (C) 2008 William Jon McCann <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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.
+ *
+ */
+
+#include <string.h>
+
+#include "gsm-util.h"
+#include "gsp-app.h"
+
+#include "gsp-app-manager.h"
+
+static GspAppManager *manager = NULL;
+
+typedef struct {
+ char *dir;
+ int index;
+ GFileMonitor *monitor;
+} GspXdgDir;
+
+struct _GspAppManagerPrivate {
+ GSList *apps;
+ GSList *dirs;
+};
+
+#define GSP_APP_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GSP_TYPE_APP_MANAGER, GspAppManagerPrivate))
+
+
+enum {
+ ADDED,
+ REMOVED,
+ LAST_SIGNAL
+};
+
+static guint gsp_app_manager_signals[LAST_SIGNAL] = { 0 };
+
+
+G_DEFINE_TYPE (GspAppManager, gsp_app_manager, G_TYPE_OBJECT)
+
+static void gsp_app_manager_dispose (GObject *object);
+static void gsp_app_manager_finalize (GObject *object);
+static void _gsp_app_manager_app_unref (GspApp *app,
+ GspAppManager *manager);
+static void _gsp_app_manager_app_removed (GspAppManager *manager,
+ GspApp *app);
+
+static GspXdgDir *
+_gsp_xdg_dir_new (const char *dir,
+ int index)
+{
+ GspXdgDir *xdgdir;
+
+ xdgdir = g_slice_new (GspXdgDir);
+
+ xdgdir->dir = g_strdup (dir);
+ xdgdir->index = index;
+ xdgdir->monitor = NULL;
+
+ return xdgdir;
+}
+
+static void
+_gsp_xdg_dir_free (GspXdgDir *xdgdir)
+{
+ if (xdgdir->dir) {
+ g_free (xdgdir->dir);
+ xdgdir->dir = NULL;
+ }
+
+ if (xdgdir->monitor) {
+ g_file_monitor_cancel (xdgdir->monitor);
+ g_object_unref (xdgdir->monitor);
+ xdgdir->monitor = NULL;
+ }
+
+ g_slice_free (GspXdgDir, xdgdir);
+}
+
+static void
+gsp_app_manager_class_init (GspAppManagerClass *class)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (class);
+
+ gobject_class->dispose = gsp_app_manager_dispose;
+ gobject_class->finalize = gsp_app_manager_finalize;
+
+ gsp_app_manager_signals[ADDED] =
+ g_signal_new ("added",
+ G_TYPE_FROM_CLASS (gobject_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GspAppManagerClass,
+ added),
+ NULL,
+ NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE, 1, G_TYPE_OBJECT);
+
+ gsp_app_manager_signals[REMOVED] =
+ g_signal_new ("removed",
+ G_TYPE_FROM_CLASS (gobject_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GspAppManagerClass,
+ removed),
+ NULL,
+ NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE, 1, G_TYPE_OBJECT);
+
+ g_type_class_add_private (class, sizeof (GspAppManagerPrivate));
+}
+
+static void
+gsp_app_manager_init (GspAppManager *manager)
+{
+ manager->priv = GSP_APP_MANAGER_GET_PRIVATE (manager);
+
+ memset (manager->priv, 0, sizeof (GspAppManagerPrivate));
+}
+
+static void
+gsp_app_manager_dispose (GObject *object)
+{
+ GspAppManager *manager;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (GSP_IS_APP_MANAGER (object));
+
+ manager = GSP_APP_MANAGER (object);
+
+ /* we unref GspApp objects in dispose since they might need to
+ * reference us during their dispose/finalize */
+ g_slist_foreach (manager->priv->apps,
+ (GFunc) _gsp_app_manager_app_unref, manager);
+ g_slist_free (manager->priv->apps);
+ manager->priv->apps = NULL;
+
+ G_OBJECT_CLASS (gsp_app_manager_parent_class)->dispose (object);
+}
+
+static void
+gsp_app_manager_finalize (GObject *object)
+{
+ GspAppManager *manager;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (GSP_IS_APP_MANAGER (object));
+
+ manager = GSP_APP_MANAGER (object);
+
+ g_slist_foreach (manager->priv->dirs,
+ (GFunc) _gsp_xdg_dir_free, NULL);
+ g_slist_free (manager->priv->dirs);
+ manager->priv->dirs = NULL;
+
+ G_OBJECT_CLASS (gsp_app_manager_parent_class)->finalize (object);
+
+ manager = NULL;
+}
+
+static void
+_gsp_app_manager_emit_added (GspAppManager *manager,
+ GspApp *app)
+{
+ g_signal_emit (G_OBJECT (manager), gsp_app_manager_signals[ADDED],
+ 0, app);
+}
+
+static void
+_gsp_app_manager_emit_removed (GspAppManager *manager,
+ GspApp *app)
+{
+ g_signal_emit (G_OBJECT (manager), gsp_app_manager_signals[REMOVED],
+ 0, app);
+}
+
+/*
+ * Directories
+ */
+
+static int
+gsp_app_manager_get_dir_index (GspAppManager *manager,
+ const char *dir)
+{
+ GSList *l;
+ GspXdgDir *xdgdir;
+
+ g_return_val_if_fail (GSP_IS_APP_MANAGER (manager), -1);
+ g_return_val_if_fail (dir != NULL, -1);
+
+ for (l = manager->priv->dirs; l != NULL; l = l->next) {
+ xdgdir = l->data;
+ if (strcmp (dir, xdgdir->dir) == 0) {
+ return xdgdir->index;
+ }
+ }
+
+ return -1;
+}
+
+const char *
+gsp_app_manager_get_dir (GspAppManager *manager,
+ unsigned int index)
+{
+ GSList *l;
+ GspXdgDir *xdgdir;
+
+ g_return_val_if_fail (GSP_IS_APP_MANAGER (manager), NULL);
+
+ for (l = manager->priv->dirs; l != NULL; l = l->next) {
+ xdgdir = l->data;
+ if (index == xdgdir->index) {
+ return xdgdir->dir;
+ }
+ }
+
+ return NULL;
+}
+
+static int
+_gsp_app_manager_find_dir_with_basename (GspAppManager *manager,
+ const char *basename,
+ int minimum_index)
+{
+ GSList *l;
+ GspXdgDir *xdgdir;
+ char *path;
+ GKeyFile *keyfile;
+ int result = -1;
+
+ path = NULL;
+ keyfile = g_key_file_new ();
+
+ for (l = manager->priv->dirs; l != NULL; l = l->next) {
+ xdgdir = l->data;
+
+ if (xdgdir->index <= minimum_index) {
+ continue;
+ }
+
+ g_free (path);
+ path = g_build_filename (xdgdir->dir, basename, NULL);
+ if (!g_file_test (path, G_FILE_TEST_EXISTS)) {
+ continue;
+ }
+
+ if (!g_key_file_load_from_file (keyfile, path,
+ G_KEY_FILE_NONE, NULL)) {
+ continue;
+ }
+
+ /* the file exists and is readable */
+ if (result == -1) {
+ result = xdgdir->index;
+ } else {
+ result = MIN (result, xdgdir->index);
+ }
+ }
+
+ g_key_file_free (keyfile);
+ g_free (path);
+
+ return result;
+}
+
+static void
+_gsp_app_manager_handle_delete (GspAppManager *manager,
+ GspApp *app,
+ const char *basename,
+ int index)
+{
+ unsigned int position;
+ unsigned int system_position;
+
+ position = gsp_app_get_xdg_position (app);
+ system_position = gsp_app_get_xdg_system_position (app);
+
+ if (system_position < index) {
+ /* it got deleted, but we don't even care about it */
+ return;
+ }
+
+ if (index < position) {
+ /* it got deleted, but in a position earlier than the current
+ * one. This happens when the user file was changed and became
+ * identical to the system file; in this case, the user file is
+ * simply removed. */
+ g_assert (index == 0);
+ return;
+ }
+
+ if (position == index &&
+ (system_position == index || system_position == G_MAXUINT)) {
+ /* the file used by the user was deleted, and there's no other
+ * file in system directories. So it really got deleted. */
+ _gsp_app_manager_app_removed (manager, app);
+ return;
+ }
+
+ if (system_position == index) {
+ /* then we know that position != index; we just hae to tell
+ * GspApp if there's still a system directory containing this
+ * basename */
+ int new_system;
+
+ new_system = _gsp_app_manager_find_dir_with_basename (manager,
+ basename,
+ index);
+ if (new_system < 0) {
+ gsp_app_set_xdg_system_position (app, G_MAXUINT);
+ } else {
+ gsp_app_set_xdg_system_position (app, new_system);
+ }
+
+ return;
+ }
+
+ if (position == index) {
+ /* then we know that system_position != G_MAXUINT; we need to
+ * tell GspApp to change position to system_position */
+ const char *dir;
+
+ dir = gsp_app_manager_get_dir (manager, system_position);
+ if (dir) {
+ char *path;
+
+ path = g_build_filename (dir, basename, NULL);
+ gsp_app_reload_at (app, path,
+ (unsigned int) system_position);
+ g_free (path);
+ } else {
+ _gsp_app_manager_app_removed (manager, app);
+ }
+
+ return;
+ }
+
+ g_assert_not_reached ();
+}
+
+static gboolean
+gsp_app_manager_xdg_dir_monitor (GFileMonitor *monitor,
+ GFile *child,
+ GFile *other_file,
+ GFileMonitorEvent flags,
+ gpointer data)
+{
+ GspAppManager *manager;
+ GspApp *old_app;
+ GspApp *app;
+ GFile *parent;
+ char *basename;
+ char *dir;
+ char *path;
+ int index;
+
+ manager = GSP_APP_MANAGER (data);
+
+ basename = g_file_get_basename (child);
+ if (!g_str_has_suffix (basename, ".desktop")) {
+ /* not a desktop file, we can ignore */
+ g_free (basename);
+ return TRUE;
+ }
+ old_app = gsp_app_manager_find_app_with_basename (manager, basename);
+
+ parent = g_file_get_parent (child);
+ dir = g_file_get_path (parent);
+ g_object_unref (parent);
+
+ index = gsp_app_manager_get_dir_index (manager, dir);
+ if (index < 0) {
+ /* not a directory we know; should never happen, though */
+ g_free (dir);
+ return TRUE;
+ }
+
+ path = g_file_get_path (child);
+
+ switch (flags) {
+ case G_FILE_MONITOR_EVENT_CHANGED:
+ case G_FILE_MONITOR_EVENT_CREATED:
+ /* we just do as if it was a new file: GspApp is clever enough
+ * to do the right thing */
+ app = gsp_app_new (path, (unsigned int) index);
+
+ /* we didn't have this app before, so add it */
+ if (old_app == NULL && app != NULL) {
+ gsp_app_manager_add (manager, app);
+ g_object_unref (app);
+ }
+ /* else: it was just updated, GspApp took care of
+ * sending the event */
+ break;
+ case G_FILE_MONITOR_EVENT_DELETED:
+ if (!old_app) {
+ /* it got deleted, but we don't know about it, so
+ * nothing to do */
+ break;
+ }
+
+ _gsp_app_manager_handle_delete (manager, old_app,
+ basename, index);
+ break;
+ default:
+ break;
+ }
+
+ g_free (path);
+ g_free (dir);
+ g_free (basename);
+
+ return TRUE;
+}
+
+/*
+ * Initialization
+ */
+
+static void
+_gsp_app_manager_fill_from_dir (GspAppManager *manager,
+ GspXdgDir *xdgdir)
+{
+ GFile *file;
+ GDir *dir;
+ const char *name;
+
+ file = g_file_new_for_path (xdgdir->dir);
+ xdgdir->monitor = g_file_monitor_directory (file, G_FILE_MONITOR_NONE,
+ NULL, NULL);
+ g_object_unref (file);
+
+ if (xdgdir->monitor) {
+ g_signal_connect (xdgdir->monitor, "changed",
+ G_CALLBACK (gsp_app_manager_xdg_dir_monitor),
+ manager);
+ }
+
+ dir = g_dir_open (xdgdir->dir, 0, NULL);
+ if (!dir) {
+ return;
+ }
+
+ while ((name = g_dir_read_name (dir))) {
+ GspApp *app;
+ char *desktop_file_path;
+
+ if (!g_str_has_suffix (name, ".desktop")) {
+ continue;
+ }
+
+ desktop_file_path = g_build_filename (xdgdir->dir, name, NULL);
+ app = gsp_app_new (desktop_file_path, xdgdir->index);
+
+ if (app != NULL) {
+ gsp_app_manager_add (manager, app);
+ g_object_unref (app);
+ }
+
+ g_free (desktop_file_path);
+ }
+
+ g_dir_close (dir);
+}
+
+void
+gsp_app_manager_fill (GspAppManager *manager)
+{
+ char **autostart_dirs;
+ int i;
+
+ if (manager->priv->apps != NULL)
+ return;
+
+ autostart_dirs = gsm_util_get_autostart_dirs ();
+ /* we always assume that the first directory is the user one */
+ g_assert (g_str_has_prefix (autostart_dirs[0],
+ g_get_user_config_dir ()));
+
+ for (i = 0; autostart_dirs[i] != NULL; i++) {
+ GspXdgDir *xdgdir;
+
+ if (gsp_app_manager_get_dir_index (manager,
+ autostart_dirs[i]) >= 0) {
+ continue;
+ }
+
+ xdgdir = _gsp_xdg_dir_new (autostart_dirs[i], i);
+ manager->priv->dirs = g_slist_prepend (manager->priv->dirs,
+ xdgdir);
+
+ _gsp_app_manager_fill_from_dir (manager, xdgdir);
+ }
+
+ g_strfreev (autostart_dirs);
+}
+
+/*
+ * App handling
+ */
+
+static void
+_gsp_app_manager_app_unref (GspApp *app,
+ GspAppManager *manager)
+{
+ g_signal_handlers_disconnect_by_func (app,
+ _gsp_app_manager_app_removed,
+ manager);
+ g_object_unref (app);
+}
+
+static void
+_gsp_app_manager_app_removed (GspAppManager *manager,
+ GspApp *app)
+{
+ _gsp_app_manager_emit_removed (manager, app);
+ manager->priv->apps = g_slist_remove (manager->priv->apps, app);
+ _gsp_app_manager_app_unref (app, manager);
+}
+
+void
+gsp_app_manager_add (GspAppManager *manager,
+ GspApp *app)
+{
+ g_return_if_fail (GSP_IS_APP_MANAGER (manager));
+ g_return_if_fail (GSP_IS_APP (app));
+
+ manager->priv->apps = g_slist_prepend (manager->priv->apps,
+ g_object_ref (app));
+ g_signal_connect_swapped (app, "removed",
+ G_CALLBACK (_gsp_app_manager_app_removed),
+ manager);
+ _gsp_app_manager_emit_added (manager, app);
+}
+
+GspApp *
+gsp_app_manager_find_app_with_basename (GspAppManager *manager,
+ const char *basename)
+{
+ GSList *l;
+ GspApp *app;
+
+ g_return_val_if_fail (GSP_IS_APP_MANAGER (manager), NULL);
+ g_return_val_if_fail (basename != NULL, NULL);
+
+ for (l = manager->priv->apps; l != NULL; l = l->next) {
+ app = GSP_APP (l->data);
+ if (strcmp (basename, gsp_app_get_basename (app)) == 0)
+ return app;
+ }
+
+ return NULL;
+}
+
+/*
+ * Singleton
+ */
+
+GspAppManager *
+gsp_app_manager_get (void)
+{
+ if (manager == NULL) {
+ manager = g_object_new (GSP_TYPE_APP_MANAGER, NULL);
+ return manager;
+ } else {
+ return g_object_ref (manager);
+ }
+}
+
+GSList *
+gsp_app_manager_get_apps (GspAppManager *manager)
+{
+ g_return_val_if_fail (GSP_IS_APP_MANAGER (manager), NULL);
+
+ return g_slist_copy (manager->priv->apps);
+}
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