Composer: Show cancellable operations and errors inline.

'Send' and 'Save Draft' are now asynchronous and run outside of
Evolution's MailMsg infrastructure.

Add an EActivityBar to the composer window so these asynchronous
operations can be tracked and cancelled even in the absense of a main
window.  Also add an EAlertBar to the composer window so error messages
can be shown directly in the window.

Instead of calling e_alert_dialog_run_for_args(), call e_alert_submit()
and pass the EMsgComposer as the widget argument.  The EMsgComposer will
decide whether to show an EAlertDialog or use the EAlertBar, depending
on the GtkMessageType of the alert.

1 files changed, 142 insertions, 0 deletions

diff --git a/mail/e-mail-folder-utils.c b/mail/e-mail-folder-utils.c
new file mode 100644
index 0000000000..7186589849
--- /dev/null
+++ b/mail/e-mail-folder-utils.c
@@ -0,0 +1,142 @@
+/*
+ * e-mail-folder-utils.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#include "e-mail-folder-utils.h"
+
+#include <config.h>
+#include <glib/gi18n-lib.h>
+
+/* X-Mailer header value */
+#define X_MAILER ("Evolution " VERSION SUB_VERSION " " VERSION_COMMENT)
+
+typedef struct _AsyncContext AsyncContext;
+
+struct _AsyncContext {
+	GCancellable *cancellable;
+	gchar *message_uid;
+};
+
+static void
+async_context_free (AsyncContext *context)
+{
+	if (context->cancellable != NULL)
+		g_object_unref (context->cancellable);
+
+	g_free (context->message_uid);
+
+	g_slice_free (AsyncContext, context);
+}
+
+static void
+mail_folder_append_message_ready (CamelFolder *folder,
+                                  GAsyncResult *result,
+                                  GSimpleAsyncResult *simple)
+{
+	AsyncContext *context;
+	GError *error = NULL;
+
+	context = g_simple_async_result_get_op_res_gpointer (simple);
+
+	camel_folder_append_message_finish (
+		folder, result, &context->message_uid, &error);
+
+	if (error != NULL) {
+		g_simple_async_result_set_from_error (simple, error);
+		g_error_free (error);
+	}
+
+	camel_operation_pop_message (context->cancellable);
+
+	g_simple_async_result_complete (simple);
+
+	g_object_unref (simple);
+}
+
+void
+e_mail_folder_append_message (CamelFolder *folder,
+                              CamelMimeMessage *message,
+                              CamelMessageInfo *info,
+                              gint io_priority,
+                              GCancellable *cancellable,
+                              GAsyncReadyCallback callback,
+                              gpointer user_data)
+{
+	GSimpleAsyncResult *simple;
+	AsyncContext *context;
+	CamelMedium *medium;
+
+	g_return_if_fail (CAMEL_IS_FOLDER (folder));
+	g_return_if_fail (CAMEL_IS_MIME_MESSAGE (message));
+
+	medium = CAMEL_MEDIUM (message);
+
+	context = g_slice_new0 (AsyncContext);
+
+	if (G_IS_CANCELLABLE (cancellable))
+		context->cancellable = g_object_ref (cancellable);
+
+	simple = g_simple_async_result_new (
+		G_OBJECT (folder), callback, user_data,
+		e_mail_folder_append_message);
+
+	g_simple_async_result_set_op_res_gpointer (
+		simple, context, (GDestroyNotify) async_context_free);
+
+	camel_operation_push_message (
+		context->cancellable,
+		_("Saving message to folder '%s'"),
+		camel_folder_get_full_name (folder));
+
+	if (camel_medium_get_header (medium, "X-Mailer") == NULL)
+		camel_medium_set_header (medium, "X-Mailer", X_MAILER);
+
+	camel_mime_message_set_date (message, CAMEL_MESSAGE_DATE_CURRENT, 0);
+
+	camel_folder_append_message (
+		folder, message, info, io_priority,
+		context->cancellable, (GAsyncReadyCallback)
+		mail_folder_append_message_ready, simple);
+}
+
+gboolean
+e_mail_folder_append_message_finish (CamelFolder *folder,
+                                     GAsyncResult *result,
+                                     gchar **appended_uid,
+                                     GError **error)
+{
+	GSimpleAsyncResult *simple;
+	AsyncContext *context;
+
+	g_return_val_if_fail (
+		g_simple_async_result_is_valid (
+		result, G_OBJECT (folder),
+		e_mail_folder_append_message), FALSE);
+
+	simple = G_SIMPLE_ASYNC_RESULT (result);
+	context = g_simple_async_result_get_op_res_gpointer (simple);
+
+	if (g_simple_async_result_propagate_error (simple, error))
+		return FALSE;
+
+	if (appended_uid != NULL) {
+		*appended_uid = context->message_uid;
+		context->message_uid = NULL;
+	}
+
+	return TRUE;
+}