2007-07-13 Murray Cumming <murrayc@murrayc.com>
[modest] / src / modest-mail-operation.c
index db115d4..19274c6 100644 (file)
 #define KB 1024
 #define GET_SIZE_BUFFER_SIZE 128
 
+/* 
+ * Remove all these #ifdef stuff when the tinymail's idle calls become
+ * locked
+ */
+#define TINYMAIL_IDLES_NOT_LOCKED_YET 1
+
 /* 'private'/'protected' functions */
 static void modest_mail_operation_class_init (ModestMailOperationClass *klass);
 static void modest_mail_operation_init       (ModestMailOperation *obj);
@@ -77,8 +83,6 @@ static void     get_msg_status_cb (GObject *obj,
 
 static void     modest_mail_operation_notify_end (ModestMailOperation *self);
 
-static gboolean did_a_cancel = FALSE;
-
 enum _ModestMailOperationSignals 
 {
        PROGRESS_CHANGED_SIGNAL,
@@ -396,29 +400,26 @@ gboolean
 modest_mail_operation_cancel (ModestMailOperation *self)
 {
        ModestMailOperationPrivate *priv;
+       gboolean canceled = FALSE;
 
-       if (!MODEST_IS_MAIL_OPERATION (self)) {
-               g_warning ("%s: invalid parametter", G_GNUC_FUNCTION);
-               return FALSE;
-       }
+       g_return_val_if_fail (MODEST_IS_MAIL_OPERATION (self), FALSE);
 
        priv = MODEST_MAIL_OPERATION_GET_PRIVATE (self);
-       if (!priv) {
-               g_warning ("BUG: %s: priv == NULL", __FUNCTION__);
-               return FALSE;
-       }
 
-       did_a_cancel = TRUE;
+       /* Note that if we call cancel with an already canceled mail
+          operation the progress changed signal won't be emitted */
+       if (priv->status == MODEST_MAIL_OPERATION_STATUS_CANCELED)
+               return FALSE;
 
        /* Set new status */
        priv->status = MODEST_MAIL_OPERATION_STATUS_CANCELED;
-
-       /* This emits progress-changed on which the mail operation queue is
-        * listening, so the mail operation is correctly removed from the
-        * queue without further explicit calls. */
-       modest_mail_operation_notify_end (self);
        
-       return TRUE;
+       /* Cancel the mail operation. We need to wrap it between this
+          start/stop operations to allow following calls to the
+          account */
+       tny_account_cancel (priv->account);
+
+       return canceled;
 }
 
 guint 
@@ -1018,7 +1019,13 @@ idle_notify_progress (gpointer data)
        ModestMailOperationState *state;
 
        state = modest_mail_operation_clone_state (mail_op);
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_enter ();
+#endif
        g_signal_emit (G_OBJECT (mail_op), signals[PROGRESS_CHANGED_SIGNAL], 0, state, NULL);
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_leave ();
+#endif
        g_slice_free (ModestMailOperationState, state);
        
        return TRUE;
@@ -1036,7 +1043,13 @@ idle_notify_progress_once (gpointer data)
 
        pair = (ModestPair *) data;
 
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_enter ();
+#endif
        g_signal_emit (G_OBJECT (pair->first), signals[PROGRESS_CHANGED_SIGNAL], 0, pair->second, NULL);
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_leave ();
+#endif
 
        /* Free the state and the reference to the mail operation */
        g_slice_free (ModestMailOperationState, (ModestMailOperationState*)pair->second);
@@ -1126,13 +1139,14 @@ static gpointer
 update_account_thread (gpointer thr_user_data)
 {
        static gboolean first_time = TRUE;
-       UpdateAccountInfo *info;
+       UpdateAccountInfo *info = NULL;
        TnyList *all_folders = NULL;
        GPtrArray *new_headers = NULL;
        TnyIterator *iter = NULL;
        TnyFolderStoreQuery *query = NULL;
        ModestMailOperationPrivate *priv = NULL;
        ModestTnySendQueue *send_queue = NULL;
+       gint num_new_headers = 0;
 
        info = (UpdateAccountInfo *) thr_user_data;
        priv = MODEST_MAIL_OPERATION_GET_PRIVATE(info->mail_op);
@@ -1179,10 +1193,12 @@ update_account_thread (gpointer thr_user_data)
        gint timeout = g_timeout_add (100, idle_notify_progress, info->mail_op);
 
        /* Refresh folders */
+       num_new_headers = 0;
        new_headers = g_ptr_array_new ();
        iter = tny_list_create_iterator (all_folders);
 
-       while (!tny_iterator_is_done (iter) && !priv->error && !did_a_cancel) {
+       while (!tny_iterator_is_done (iter) && !priv->error && 
+              priv->status != MODEST_MAIL_OPERATION_STATUS_CANCELED) {
 
                InternalFolderObserver *observer;
                TnyFolderStore *folder = TNY_FOLDER_STORE (tny_iterator_get_current (iter));
@@ -1231,20 +1247,17 @@ update_account_thread (gpointer thr_user_data)
 
                g_object_unref (G_OBJECT (folder));
                if (priv->error)
-               {
                        priv->status = MODEST_MAIL_OPERATION_STATUS_FAILED;
-                       goto out;
-               }
-               
+
                tny_iterator_next (iter);
        }
 
-       did_a_cancel = FALSE;
-
        g_object_unref (G_OBJECT (iter));
        g_source_remove (timeout);
 
-       if (new_headers->len > 0) {
+       if (priv->status != MODEST_MAIL_OPERATION_STATUS_CANCELED && 
+           priv->status != MODEST_MAIL_OPERATION_STATUS_FAILED &&
+           new_headers->len > 0) {
                gint msg_num = 0;
 
                /* Order by date */
@@ -1292,12 +1305,17 @@ update_account_thread (gpointer thr_user_data)
 
                        msg_num++;
                }
-               g_ptr_array_foreach (new_headers, (GFunc) g_object_unref, NULL);
-               g_ptr_array_free (new_headers, FALSE);
        }
+
+       /* Get the number of new headers and free them */
+       num_new_headers = new_headers->len;
+       g_ptr_array_foreach (new_headers, (GFunc) g_object_unref, NULL);
+       g_ptr_array_free (new_headers, FALSE);
        
+       if (priv->status == MODEST_MAIL_OPERATION_STATUS_CANCELED)
+               goto out;
+
        /* Perform send (if operation was not cancelled) */
-       if (did_a_cancel) goto out;             
 /*     priv->op_type = MODEST_MAIL_OPERATION_TYPE_SEND; */
        priv->done = 0;
        priv->total = 0;
@@ -1337,7 +1355,7 @@ update_account_thread (gpointer thr_user_data)
                /* This thread is not in the main lock */
                idle_info = g_malloc0 (sizeof (UpdateAccountInfo));
                idle_info->mail_op = g_object_ref (info->mail_op);
-               idle_info->new_headers = (new_headers) ? new_headers->len : 0;
+               idle_info->new_headers = num_new_headers;
                idle_info->callback = info->callback;
                g_idle_add (idle_update_account_cb, idle_info);
        }
@@ -1608,7 +1626,13 @@ transfer_folder_status_cb (GObject *obj,
        priv->total = status->of_total;
 
        state = modest_mail_operation_clone_state (self);
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_enter ();
+#endif
        g_signal_emit (G_OBJECT (self), signals[PROGRESS_CHANGED_SIGNAL], 0, state, NULL);
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_leave ();
+#endif
        g_slice_free (ModestMailOperationState, state);
 }
 
@@ -2056,28 +2080,19 @@ get_msg_status_cb (GObject *obj,
        self = helper->mail_op;
        priv = MODEST_MAIL_OPERATION_GET_PRIVATE(self);
 
-       if(priv->status == MODEST_MAIL_OPERATION_STATUS_CANCELED) {
-               TnyFolder *folder = tny_header_get_folder (helper->header);
-               if (folder) {
-                       TnyAccount *account;
-                       account = tny_folder_get_account (folder);
-                       if (account) {
-                               tny_account_cancel (account);
-                               g_object_unref (account);
-                       }
-                       g_object_unref (folder);
-               }
-              
-               return;
-       }
-
        priv->done = 1;
        priv->total = 1;
 
        state = modest_mail_operation_clone_state (self);
        state->bytes_done = status->position;
        state->bytes_total = status->of_total;
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_enter ();
+#endif
        g_signal_emit (G_OBJECT (self), signals[PROGRESS_CHANGED_SIGNAL], 0, state, NULL);
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_leave ();
+#endif
        g_slice_free (ModestMailOperationState, state);
 }
 
@@ -2383,7 +2398,13 @@ transfer_msgs_status_cb (GObject *obj,
        priv->total = status->of_total;
 
        state = modest_mail_operation_clone_state (self);
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_enter ();
+#endif
        g_signal_emit (G_OBJECT (self), signals[PROGRESS_CHANGED_SIGNAL], 0, state, NULL);
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_leave ();
+#endif
        g_slice_free (ModestMailOperationState, state);
 }
 
@@ -2561,7 +2582,7 @@ on_refresh_folder (TnyFolder   *folder,
        }
 
        /* Free */
-       g_object_unref (helper->mail_op);
+/*     g_object_unref (helper->mail_op); */
        g_slice_free   (RefreshAsyncHelper, helper);
 
        /* Notify about operation end */
@@ -2592,7 +2613,13 @@ on_refresh_folder_status_update (GObject *obj,
        priv->total = status->of_total;
 
        state = modest_mail_operation_clone_state (self);
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_enter ();
+#endif
        g_signal_emit (G_OBJECT (self), signals[PROGRESS_CHANGED_SIGNAL], 0, state, NULL);
+#ifdef TINYMAIL_IDLES_NOT_LOCKED_YET
+       gdk_threads_leave ();
+#endif
        g_slice_free (ModestMailOperationState, state);
 }
 
@@ -2614,7 +2641,7 @@ modest_mail_operation_refresh_folder  (ModestMailOperation *self,
 
        /* Create the helper */
        helper = g_slice_new0 (RefreshAsyncHelper);
-       helper->mail_op = g_object_ref(self);
+       helper->mail_op = g_object_ref (self);
        helper->user_callback = user_callback;
        helper->user_data = user_data;
 
@@ -2653,7 +2680,9 @@ modest_mail_operation_notify_end (ModestMailOperation *self)
                priv->account_name = NULL;
        }
        
-       /* Notify the observers about the mail opertation end */
+       /* Notify the observers about the mail operation end */
+       /* We do not wrapp this emission because we assume that this
+          function is always called from within the main lock */
        state = modest_mail_operation_clone_state (self);
        g_signal_emit (G_OBJECT (self), signals[PROGRESS_CHANGED_SIGNAL], 0, state, NULL);
        g_slice_free (ModestMailOperationState, state);