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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Original code taken from gnome-shell */
#include "config.h"
#include "shell-app-system.h"
#include <string.h>
#include <gio/gio.h>
enum {
INSTALLED_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
struct _ShellAppSystemPrivate {
GMenuTree *apps_tree;
GHashTable *id_to_info;
};
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);
static void shell_app_system_class_init(ShellAppSystemClass *klass)
{
GObjectClass *gobject_class = (GObjectClass *)klass;
gobject_class->finalize = shell_app_system_finalize;
signals[INSTALLED_CHANGED] =
g_signal_new ("installed-changed",
SHELL_TYPE_APP_SYSTEM,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ShellAppSystemClass, installed_changed),
NULL, NULL, NULL,
G_TYPE_NONE, 0);
g_type_class_add_private (gobject_class, sizeof (ShellAppSystemPrivate));
}
static void
shell_app_system_init (ShellAppSystem *self)
{
ShellAppSystemPrivate *priv;
self->priv = priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
SHELL_TYPE_APP_SYSTEM,
ShellAppSystemPrivate);
priv->id_to_info = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify)g_free,
(GDestroyNotify)g_object_unref);
priv->apps_tree = gmenu_tree_new ("applications.menu", GMENU_TREE_FLAGS_NONE);
g_signal_connect (priv->apps_tree, "changed", G_CALLBACK (on_apps_tree_changed_cb), self);
on_apps_tree_changed_cb (priv->apps_tree, self);
}
static void
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->id_to_info);
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;
}
/* FIXME: Is this 'replace info, then removed those that are gone from
* the menu tree' vs. 'empty hash table, add everything that's still here'
* still useful (from a performance POV) ?
*/
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;
GDesktopAppInfo *info;
info = g_hash_table_lookup (self->priv->id_to_info, id);
if (!info)
info = gmenu_tree_entry_get_app_info (entry);
g_hash_table_insert (self->priv->id_to_info, g_strdup (id), g_object_ref (info));
}
g_hash_table_iter_init (&iter, self->priv->id_to_info);
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:
*
* Return Value: (transfer none): The global #ShellAppSystem singleton
*/
ShellAppSystem *
shell_app_system_get_default ()
{
static ShellAppSystem *instance = NULL;
if (instance == NULL)
instance = g_object_new (SHELL_TYPE_APP_SYSTEM, NULL);
return instance;
}
GHashTable *
shell_app_system_get_entries (ShellAppSystem *self)
{
return self->priv->id_to_info;
}
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