[gvfs] client: Port GVfsIconLoadable to GTask

[Ondrej Holy <oholy src gnome org>]

commit 811aacef56c2f8ced4f2c8f1e0caf1e819a2eb8e
Author: Ondrej Holy <oholy redhat com>
Date:   Fri May 22 14:38:24 2015 +0200

    client: Port GVfsIconLoadable to GTask
    
    GSimpleAsyncResult is deprecated in favour of GTask and should be replaced.
    
    This commit also slightly changes API to be more similiar with gdeamonfile.
    
    Based on patch from Dan Winship.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=747412

 client/gvfsiconloadable.c |  120 +++++++++++++++++++++------------------------
 1 files changed, 56 insertions(+), 64 deletions(-)
---
diff --git a/client/gvfsiconloadable.c b/client/gvfsiconloadable.c
index a464774..2de6df8 100644
--- a/client/gvfsiconloadable.c
+++ b/client/gvfsiconloadable.c
@@ -136,20 +136,16 @@ g_vfs_icon_load (GLoadableIcon  *icon,
 
 
 typedef void (*CreateProxyAsyncCallback) (GVfsDBusMount *proxy,
-                                          GSimpleAsyncResult *result,
-                                          GCancellable *cancellable,
-                                          gpointer callback_data);
+                                          GDBusConnection *connection,
+                                          GMountInfo *mount_info,
+                                          GTask *task);
 
 typedef struct {
-  GSimpleAsyncResult *result;
-  GVfsIcon *vfs_icon;
+  GTask *task;
   GMountInfo *mount_info;
   GDBusConnection *connection;
   GVfsDBusMount *proxy;
-  GCancellable *cancellable;
   CreateProxyAsyncCallback callback;
-  gpointer callback_data;
-  gulong cancelled_tag;
 } AsyncPathCall;
 
 
@@ -159,9 +155,7 @@ async_path_call_free (AsyncPathCall *data)
   g_clear_object (&data->connection);
   if (data->mount_info)
     g_mount_info_unref (data->mount_info);
-  g_clear_object (&data->result);
-  g_object_unref (data->vfs_icon);
-  g_clear_object (&data->cancellable);
+  g_clear_object (&data->task);
   g_clear_object (&data->proxy);
   g_free (data);
 }
@@ -178,8 +172,8 @@ async_proxy_new_cb (GObject *source_object,
   proxy = gvfs_dbus_mount_proxy_new_finish (res, &error);
   if (proxy == NULL)
     {
-      _g_simple_async_result_take_error_stripped (data->result, error);      
-      _g_simple_async_result_complete_with_cancellable (data->result, data->cancellable);
+      g_dbus_error_strip_remote_error (error);
+      g_task_return_error (data->task, error);
       async_path_call_free (data);
       return;
     }
@@ -187,9 +181,11 @@ async_proxy_new_cb (GObject *source_object,
   data->proxy = proxy;
 
   data->callback (proxy,
-                  data->result,
-                  data->cancellable,
-                  data->callback_data);
+                  data->connection,
+                  data->mount_info,
+                  g_object_ref (data->task));
+
+  async_path_call_free (data);
 }
 
 static void
@@ -202,8 +198,7 @@ async_got_connection_cb (GDBusConnection *connection,
   if (connection == NULL)
     {
       g_dbus_error_strip_remote_error (io_error);
-      g_simple_async_result_set_from_error (data->result, io_error);
-      _g_simple_async_result_complete_with_cancellable (data->result, data->cancellable);
+      g_task_return_error (data->task, io_error);
       async_path_call_free (data);
       return;
     }
@@ -213,7 +208,7 @@ async_got_connection_cb (GDBusConnection *connection,
                              G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES | 
G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS,
                              data->mount_info->dbus_id,
                              data->mount_info->object_path,
-                             data->cancellable,
+                             g_task_get_cancellable (data->task),
                              async_proxy_new_cb,
                              data);
 }
@@ -228,8 +223,7 @@ async_got_mount_info (GMountInfo *mount_info,
   if (error != NULL)
     {
       g_dbus_error_strip_remote_error (error);
-      g_simple_async_result_set_from_error (data->result, error);      
-      _g_simple_async_result_complete_with_cancellable (data->result, data->cancellable);
+      g_task_return_error (data->task, error);
       async_path_call_free (data);
       return;
     }
@@ -239,30 +233,19 @@ async_got_mount_info (GMountInfo *mount_info,
   _g_dbus_connection_get_for_async (mount_info->dbus_id,
                                     async_got_connection_cb,
                                     data,
-                                    data->cancellable);
+                                    g_task_get_cancellable (data->task));
 }
 
 static void
 create_proxy_for_icon_async (GVfsIcon *vfs_icon,
-                            GCancellable *cancellable,
-                            GAsyncReadyCallback op_callback,
-                            gpointer op_callback_data,
-                            CreateProxyAsyncCallback callback,
-                            gpointer callback_data)
+                             GTask *task,
+                             CreateProxyAsyncCallback callback)
 {
   AsyncPathCall *data;
 
   data = g_new0 (AsyncPathCall, 1);
-
-  data->result = g_simple_async_result_new (G_OBJECT (vfs_icon),
-                                           op_callback, op_callback_data,
-                                           NULL);
-
-  data->vfs_icon = g_object_ref (vfs_icon);
-  if (cancellable)
-    data->cancellable = g_object_ref (cancellable);
+  data->task = task;
   data->callback = callback;
-  data->callback_data = callback_data;
 
   _g_daemon_vfs_get_mount_info_async (vfs_icon->mount_spec,
                                       "/",
@@ -270,12 +253,17 @@ create_proxy_for_icon_async (GVfsIcon *vfs_icon,
                                       data);
 }
 
+typedef struct {
+  gulong cancelled_tag;
+} AsyncCallIconLoad;
+
 static void
 open_icon_read_cb (GVfsDBusMount *proxy,
                    GAsyncResult *res,
                    gpointer user_data)
 {
-  AsyncPathCall *data = user_data;
+  GTask *task = G_TASK (user_data);
+  AsyncCallIconLoad *data = g_task_get_task_data (task);
   GError *error = NULL;
   gboolean can_seek;
   GUnixFDList *fd_list;
@@ -286,7 +274,8 @@ open_icon_read_cb (GVfsDBusMount *proxy,
 
   if (! gvfs_dbus_mount_call_open_icon_for_read_finish (proxy, &fd_id_val, &can_seek, &fd_list, res, &error))
     {
-      _g_simple_async_result_take_error_stripped (data->result, error);
+      g_dbus_error_strip_remote_error (error);
+      g_task_return_error (task, error);
       goto out;
     }
 
@@ -296,38 +285,39 @@ open_icon_read_cb (GVfsDBusMount *proxy,
   if (fd_list == NULL || g_unix_fd_list_get_length (fd_list) != 1 ||
       (fd = g_unix_fd_list_get (fd_list, fd_id, NULL)) == -1)
     {
-      g_simple_async_result_set_error (data->result,
-                                       G_IO_ERROR, G_IO_ERROR_FAILED,
-                                       _("Couldn’t get stream file descriptor"));
+      g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_FAILED,
+                               _("Couldn’t get stream file descriptor"));
     }
   else
     {
       stream = g_daemon_file_input_stream_new (fd, can_seek);
-      g_simple_async_result_set_op_res_gpointer (data->result, stream, g_object_unref);
+      g_task_return_pointer (task, stream, g_object_unref);
       g_object_unref (fd_list);
     }
 
 out:
-  _g_simple_async_result_complete_with_cancellable (data->result, data->cancellable);
-  _g_dbus_async_unsubscribe_cancellable (data->cancellable, data->cancelled_tag);
-  async_path_call_free (data);
+  _g_dbus_async_unsubscribe_cancellable (g_task_get_cancellable (task), data->cancelled_tag);
+  g_object_unref (task);
 }
 
 static void
 load_async_cb (GVfsDBusMount *proxy,
-               GSimpleAsyncResult *result,
-               GCancellable *cancellable,
-               gpointer callback_data)
+               GDBusConnection *connection,
+               GMountInfo *mount_info,
+               GTask *task)
 {
-  AsyncPathCall *data = callback_data;
+  AsyncCallIconLoad *data = g_task_get_task_data (task);
+  GVfsIcon *vfs_icon;
+
+  vfs_icon = G_VFS_ICON (g_task_get_source_object (task));
 
   gvfs_dbus_mount_call_open_icon_for_read (proxy,
-                                           data->vfs_icon->icon_id,
+                                           vfs_icon->icon_id,
                                            NULL,
-                                           cancellable,
+                                           g_task_get_cancellable (task),
                                            (GAsyncReadyCallback) open_icon_read_cb,
-                                           callback_data);
-  data->cancelled_tag = _g_dbus_async_subscribe_cancellable (data->connection, cancellable);
+                                           task);
+  data->cancelled_tag = _g_dbus_async_subscribe_cancellable (connection, g_task_get_cancellable (task));
 }
 
 static void
@@ -337,10 +327,16 @@ g_vfs_icon_load_async (GLoadableIcon       *icon,
                        GAsyncReadyCallback  callback,
                        gpointer             user_data)
 {
-  create_proxy_for_icon_async (G_VFS_ICON (icon),
-                              cancellable,
-                              callback, user_data,
-                              load_async_cb, NULL);
+  AsyncCallIconLoad *data;
+  GTask *task;
+
+  task = g_task_new (icon, cancellable, callback, user_data);
+  g_task_set_source_tag (task, g_vfs_icon_load_async);
+
+  data = g_new0 (AsyncCallIconLoad, 1);
+  g_task_set_task_data (task, data, g_free);
+
+  create_proxy_for_icon_async (G_VFS_ICON (icon), task, load_async_cb);
 }
 
 static GInputStream *
@@ -349,14 +345,10 @@ g_vfs_icon_load_finish (GLoadableIcon  *icon,
                          char          **type,
                          GError        **error)
 {
-  GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res);
-  gpointer op;
-
-  op = g_simple_async_result_get_op_res_gpointer (simple);
-  if (op)
-    return g_object_ref (op);
+  g_return_val_if_fail (g_task_is_valid (res, icon), NULL);
+  g_return_val_if_fail (g_async_result_is_tagged (res, g_vfs_icon_load_async), NULL);
 
-  return NULL;
+  return g_task_propagate_pointer (G_TASK (res), error);
 }
 
 static void