moving from https://github.com/perberos/mate-desktop-environment

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
index 0000000..bcd6d40
--- /dev/null
+++ b/capplet/gsp-app-manager.c
@@ -0,0 +1,593 @@
+/* -*- 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);
+}