[gnome-shell] app-system: Remove use of gnome-menus internally

[Jasper St. Pierre <jstpierre src gnome org>]

commit d27d9fe6948eb65a930736427125a0763fcd6d72
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Sun Apr 21 00:05:50 2013 -0400

    app-system: Remove use of gnome-menus internally
    
    We want to transition to a system in the future where we have a desktop
    file cache. As we no longer differentiate categories or similar, it no
    longer makes sense to have app visibility based on categories. Thus,
    we no longer need to use gnome-menus to list all apps. The potential
    issue here is reloading all desktop files when new files are created,
    but this can be dealt with individually.
    
    The "All Applications" view still uses gnome-menus.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=698486

 configure.ac           |    2 -
 src/shell-app-system.c |  176 ++++++------------------------------------------
 src/shell-app-system.h |    2 -
 src/shell-app.h        |    3 +-
 4 files changed, 22 insertions(+), 161 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 6bc81f6..b37e232 100644
--- a/configure.ac
+++ b/configure.ac
@@ -71,7 +71,6 @@ POLKIT_MIN_VERSION=0.100
 STARTUP_NOTIFICATION_MIN_VERSION=0.11
 GCR_MIN_VERSION=3.7.5
 GNOME_DESKTOP_REQUIRED_VERSION=3.7.90
-GNOME_MENUS_REQUIRED_VERSION=3.5.3
 NETWORKMANAGER_MIN_VERSION=0.9.8
 PULSE_MIN_VERS=2.0
 
@@ -81,7 +80,6 @@ SHARED_PCS="gio-unix-2.0 >= $GIO_MIN_VERSION
             gtk+-3.0 >= $GTK_MIN_VERSION
             atk-bridge-2.0
             gjs-internals-1.0 >= $GJS_MIN_VERSION
-            libgnome-menu-3.0 >= $GNOME_MENUS_REQUIRED_VERSION
             $recorder_modules
             gdk-x11-3.0 libsoup-2.4
             xtst
diff --git a/src/shell-app-system.c b/src/shell-app-system.c
index af41822..7b38fe5 100644
--- a/src/shell-app-system.c
+++ b/src/shell-app-system.c
@@ -38,15 +38,12 @@ enum {
 static guint signals[LAST_SIGNAL] = { 0 };
 
 struct _ShellAppSystemPrivate {
-  GMenuTree *apps_tree;
-
   GHashTable *running_apps;
   GHashTable *id_to_app;
   GHashTable *startup_wm_class_to_id;
 };
 
 static void shell_app_system_finalize (GObject *object);
-static void on_apps_tree_changed_cb (GMenuTree *tree, gpointer user_data);
 
 G_DEFINE_TYPE(ShellAppSystem, shell_app_system, G_TYPE_OBJECT);
 
@@ -75,6 +72,26 @@ static void shell_app_system_class_init(ShellAppSystemClass *klass)
 }
 
 static void
+load_apps (ShellAppSystem *self)
+{
+  ShellAppSystemPrivate *priv = self->priv;
+  GList *apps, *l;
+
+  apps = g_app_info_get_all ();
+  for (l = apps; l != NULL; l = l->next)
+    {
+      GAppInfo *info = l->data;
+      g_hash_table_insert (priv->id_to_app,
+                           (char *) g_app_info_get_id (info),
+                           _shell_app_new (G_DESKTOP_APP_INFO (info)));
+    }
+
+  g_list_free_full (apps, g_object_unref);
+
+  g_signal_emit (self, signals[INSTALLED_CHANGED], 0);
+}
+
+static void
 shell_app_system_init (ShellAppSystem *self)
 {
   ShellAppSystemPrivate *priv;
@@ -90,12 +107,7 @@ shell_app_system_init (ShellAppSystem *self)
 
   priv->startup_wm_class_to_id = g_hash_table_new (g_str_hash, g_str_equal);
 
-  /* We want to track NoDisplay apps, so we add INCLUDE_NODISPLAY. We'll
-   * filter NoDisplay apps out when showing them to the user. */
-  priv->apps_tree = gmenu_tree_new ("applications.menu", GMENU_TREE_FLAGS_INCLUDE_NODISPLAY);
-  g_signal_connect (priv->apps_tree, "changed", G_CALLBACK (on_apps_tree_changed_cb), self);
-
-  on_apps_tree_changed_cb (priv->apps_tree, self);
+  load_apps (self);
 }
 
 static void
@@ -104,8 +116,6 @@ shell_app_system_finalize (GObject *object)
   ShellAppSystem *self = SHELL_APP_SYSTEM (object);
   ShellAppSystemPrivate *priv = self->priv;
 
-  g_object_unref (priv->apps_tree);
-
   g_hash_table_destroy (priv->running_apps);
   g_hash_table_destroy (priv->id_to_app);
   g_hash_table_destroy (priv->startup_wm_class_to_id);
@@ -113,150 +123,6 @@ shell_app_system_finalize (GObject *object)
   G_OBJECT_CLASS (shell_app_system_parent_class)->finalize (object);
 }
 
-static void
-get_flattened_entries_recurse (GMenuTreeDirectory *dir,
-                               GHashTable         *entry_set)
-{
-  GMenuTreeIter *iter = gmenu_tree_directory_iter (dir);
-  GMenuTreeItemType next_type;
-
-  while ((next_type = gmenu_tree_iter_next (iter)) != GMENU_TREE_ITEM_INVALID)
-    {
-      gpointer item = NULL;
-
-      switch (next_type)
-        {
-        case GMENU_TREE_ITEM_ENTRY:
-          {
-            GMenuTreeEntry *entry;
-            item = entry = gmenu_tree_iter_get_entry (iter);
-            /* Key is owned by entry */
-            g_hash_table_replace (entry_set,
-                                  (char*)gmenu_tree_entry_get_desktop_file_id (entry),
-                                  gmenu_tree_item_ref (entry));
-          }
-          break;
-        case GMENU_TREE_ITEM_DIRECTORY:
-          {
-            item = gmenu_tree_iter_get_directory (iter);
-            get_flattened_entries_recurse ((GMenuTreeDirectory*)item, entry_set);
-          }
-          break;
-        default:
-          break;
-        }
-      if (item != NULL)
-        gmenu_tree_item_unref (item);
-    }
-
-  gmenu_tree_iter_unref (iter);
-}
-
-static GHashTable *
-get_flattened_entries_from_tree (GMenuTree *tree)
-{
-  GHashTable *table;
-  GMenuTreeDirectory *root;
-
-  table = g_hash_table_new_full (g_str_hash, g_str_equal,
-                                 (GDestroyNotify) NULL,
-                                 (GDestroyNotify) gmenu_tree_item_unref);
-
-  root = gmenu_tree_get_root_directory (tree);
-  
-  if (root != NULL)
-    get_flattened_entries_recurse (root, table);
-
-  gmenu_tree_item_unref (root);
-  
-  return table;
-}
-
-static void
-on_apps_tree_changed_cb (GMenuTree *tree,
-                         gpointer   user_data)
-{
-  ShellAppSystem *self = SHELL_APP_SYSTEM (user_data);
-  GError *error = NULL;
-  GHashTable *new_apps;
-  GHashTableIter iter;
-  gpointer key, value;
-
-  g_assert (tree == self->priv->apps_tree);
-
-  if (!gmenu_tree_load_sync (self->priv->apps_tree, &error))
-    {
-      if (error)
-        {
-          g_warning ("Failed to load apps: %s", error->message);
-          g_error_free (error);
-        }
-      else
-        {
-          g_warning ("Failed to load apps");
-        }
-      return;
-    }
-
-  new_apps = get_flattened_entries_from_tree (self->priv->apps_tree);
-  g_hash_table_iter_init (&iter, new_apps);
-  while (g_hash_table_iter_next (&iter, &key, &value))
-    {
-      const char *id = key;
-      GMenuTreeEntry *entry = value;
-      ShellApp *app;
-      GDesktopAppInfo *info;
-      const char *startup_wm_class;
-
-      info = g_desktop_app_info_new (gmenu_tree_entry_get_desktop_file_id (entry));
-
-      app = g_hash_table_lookup (self->priv->id_to_app, id);
-      if (app != NULL)
-        {
-          GDesktopAppInfo *old_info;
-          const gchar *old_startup_wm_class;
-
-          old_info = shell_app_get_app_info (app);
-          old_startup_wm_class = g_desktop_app_info_get_startup_wm_class (old_info);
-
-          if (old_startup_wm_class)
-            g_hash_table_remove (self->priv->startup_wm_class_to_id, old_startup_wm_class);
-
-          _shell_app_set_app_info (app, info);
-          g_object_ref (app);  /* Extra ref, removed in _replace below */
-        }
-      else
-        {
-          app = _shell_app_new (info);
-        }
-
-      g_object_unref (info);
-
-      g_hash_table_replace (self->priv->id_to_app, (char*)id, app);
-
-      startup_wm_class = g_desktop_app_info_get_startup_wm_class (info);
-      if (startup_wm_class)
-        g_hash_table_replace (self->priv->startup_wm_class_to_id,
-                              (char*)startup_wm_class, (char*)id);
-    }
-  /* Now iterate over the apps again; we need to unreference any apps
-   * which have been removed.  The JS code may still be holding a
-   * reference; that's fine.
-   */
-  g_hash_table_iter_init (&iter, self->priv->id_to_app);
-  while (g_hash_table_iter_next (&iter, &key, &value))
-    {
-      const char *id = key;
-      
-      if (!g_hash_table_lookup (new_apps, id))
-        g_hash_table_iter_remove (&iter);
-    }
-
-  g_hash_table_destroy (new_apps);
-
-  g_signal_emit (self, signals[INSTALLED_CHANGED], 0);
-}
-
 /**
  * shell_app_system_get_default:
  *
diff --git a/src/shell-app-system.h b/src/shell-app-system.h
index 1eb15e9..6f93449 100644
--- a/src/shell-app-system.h
+++ b/src/shell-app-system.h
@@ -5,8 +5,6 @@
 #include <gio/gio.h>
 #include <clutter/clutter.h>
 #include <meta/window.h>
-#define GMENU_I_KNOW_THIS_IS_UNSTABLE
-#include <gmenu-tree.h>
 
 #include "shell-app.h"
 
diff --git a/src/shell-app.h b/src/shell-app.h
index 55bb01d..dabf8bb 100644
--- a/src/shell-app.h
+++ b/src/shell-app.h
@@ -4,9 +4,8 @@
 
 #include <clutter/clutter.h>
 #include <gio/gio.h>
+#include <gio/gdesktopappinfo.h>
 #include <meta/window.h>
-#define GMENU_I_KNOW_THIS_IS_UNSTABLE
-#include <gmenu-tree.h>
 
 G_BEGIN_DECLS