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, 235 insertions, 0 deletions

diff --git a/widgets/misc/e-alert-bar.c b/widgets/misc/e-alert-bar.c
new file mode 100644
index 0000000000..7796482689
--- /dev/null
+++ b/widgets/misc/e-alert-bar.c
@@ -0,0 +1,235 @@
+/*
+ * e-alert-bar.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-alert-bar.h"
+
+#include <config.h>
+#include <glib/gi18n-lib.h>
+
+#define E_ALERT_BAR_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_ALERT_BAR, EAlertBarPrivate))
+
+#define ICON_SIZE	GTK_ICON_SIZE_DIALOG
+
+struct _EAlertBarPrivate {
+	GQueue alerts;
+	GtkWidget *image;		/* not referenced */
+	GtkWidget *primary_label;	/* not referenced */
+	GtkWidget *secondary_label;	/* not referenced */
+};
+
+G_DEFINE_TYPE (
+	EAlertBar,
+	e_alert_bar,
+	GTK_TYPE_INFO_BAR)
+
+static void
+alert_bar_show_alert (EAlertBar *alert_bar)
+{
+	GtkImage *image;
+	GtkLabel *label;
+	GtkInfoBar *info_bar;
+	GtkWidget *action_area;
+	EAlertButton *buttons;
+	EAlert *alert;
+	GList *children;
+	GtkMessageType message_type;
+	const gchar *stock_id;
+	const gchar *text;
+	gint response_id;
+
+	info_bar = GTK_INFO_BAR (alert_bar);
+	action_area = gtk_info_bar_get_action_area (info_bar);
+
+	alert = g_queue_peek_head (&alert_bar->priv->alerts);
+	g_return_if_fail (E_IS_ALERT (alert));
+
+	/* Remove all buttons from the previous alert. */
+	children = gtk_container_get_children (GTK_CONTAINER (action_area));
+	while (children != NULL) {
+		GtkWidget *child = GTK_WIDGET (children->data);
+		gtk_container_remove (GTK_CONTAINER (action_area), child);
+		children = g_list_delete_link (children, children);
+	}
+
+	/* Add new buttons. */
+	buttons = e_alert_peek_buttons (alert);
+	if (buttons == NULL) {
+		gtk_info_bar_add_button (
+			info_bar, _("_Dismiss"), GTK_RESPONSE_CLOSE);
+	} else while (buttons != NULL) {
+		const gchar *button_text;
+
+		if (buttons->stock != NULL)
+			button_text = buttons->stock;
+		else
+			button_text = buttons->label;
+
+		gtk_info_bar_add_button (
+			info_bar, button_text, buttons->response);
+
+		buttons = buttons->next;
+	}
+
+	response_id = e_alert_get_default_response (alert);
+	gtk_info_bar_set_default_response (info_bar, response_id);
+
+	message_type = e_alert_get_message_type (alert);
+	gtk_info_bar_set_message_type (info_bar, message_type);
+
+	text = e_alert_get_primary_text (alert);
+	label = GTK_LABEL (alert_bar->priv->primary_label);
+	gtk_label_set_text (label, text);
+
+	text = e_alert_get_secondary_text (alert);
+	label = GTK_LABEL (alert_bar->priv->secondary_label);
+	gtk_label_set_text (label, text);
+
+	stock_id = e_alert_get_stock_id (alert);
+	image = GTK_IMAGE (alert_bar->priv->image);
+	gtk_image_set_from_stock (image, stock_id, ICON_SIZE);
+
+	gtk_widget_show (GTK_WIDGET (alert_bar));
+}
+
+static void
+alert_bar_dispose (GObject *object)
+{
+	EAlertBarPrivate *priv;
+
+	priv = E_ALERT_BAR_GET_PRIVATE (object);
+
+	while (!g_queue_is_empty (&priv->alerts))
+		g_object_unref (g_queue_pop_head (&priv->alerts));
+
+	/* Chain up to parent's dispose() method. */
+	G_OBJECT_CLASS (e_alert_bar_parent_class)->dispose (object);
+}
+
+static void
+alert_bar_response (GtkInfoBar *info_bar,
+                    gint response_id)
+{
+	EAlertBar *alert_bar;
+	EAlert *alert;
+
+	alert_bar = E_ALERT_BAR (info_bar);
+
+	alert = g_queue_pop_head (&alert_bar->priv->alerts);
+	e_alert_response (alert, response_id);
+	g_object_unref (alert);
+
+	if (!g_queue_is_empty (&alert_bar->priv->alerts))
+		alert_bar_show_alert (alert_bar);
+	else
+		gtk_widget_hide (GTK_WIDGET (alert_bar));
+}
+
+static void
+e_alert_bar_class_init (EAlertBarClass *class)
+{
+	GObjectClass *object_class;
+	GtkInfoBarClass *info_bar_class;
+
+	g_type_class_add_private (class, sizeof (EAlertBarPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->dispose = alert_bar_dispose;
+
+	info_bar_class = GTK_INFO_BAR_CLASS (class);
+	info_bar_class->response = alert_bar_response;
+}
+
+static void
+e_alert_bar_init (EAlertBar *alert_bar)
+{
+	GtkWidget *container;
+	GtkWidget *widget;
+	PangoAttribute *attr;
+	PangoAttrList *attr_list;
+
+	alert_bar->priv = E_ALERT_BAR_GET_PRIVATE (alert_bar);
+
+	g_queue_init (&alert_bar->priv->alerts);
+
+	container = gtk_info_bar_get_content_area (GTK_INFO_BAR (alert_bar));
+
+	widget = gtk_hbox_new (FALSE, 12);
+	gtk_container_add (GTK_CONTAINER (container), widget);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	widget = gtk_image_new ();
+	gtk_misc_set_alignment (GTK_MISC (widget), 0.5, 0.0);
+	gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	alert_bar->priv->image = widget;
+	gtk_widget_show (widget);
+
+	widget = gtk_vbox_new (FALSE, 12);
+	gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	attr_list = pango_attr_list_new ();
+	attr = pango_attr_scale_new  (PANGO_SCALE_LARGE);
+	pango_attr_list_insert (attr_list, attr);
+	attr = pango_attr_weight_new (PANGO_WEIGHT_BOLD);
+	pango_attr_list_insert (attr_list, attr);
+
+	widget = gtk_label_new (NULL);
+	gtk_label_set_attributes (GTK_LABEL (widget), attr_list);
+	gtk_label_set_line_wrap (GTK_LABEL (widget), TRUE);
+	gtk_misc_set_alignment (GTK_MISC (widget), 0.0, 0.5);
+	gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	alert_bar->priv->primary_label = widget;
+	gtk_widget_show (widget);
+
+	widget = gtk_label_new (NULL);
+	gtk_label_set_line_wrap (GTK_LABEL (widget), TRUE);
+	gtk_misc_set_alignment (GTK_MISC (widget), 0.0, 0.5);
+	gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	alert_bar->priv->secondary_label = widget;
+	gtk_widget_show (widget);
+
+	pango_attr_list_unref (attr_list);
+}
+
+GtkWidget *
+e_alert_bar_new (void)
+{
+	return g_object_new (E_TYPE_ALERT_BAR, NULL);
+}
+
+void
+e_alert_bar_add_alert (EAlertBar *alert_bar,
+                       EAlert *alert)
+{
+	gboolean show_it_now;
+
+	g_return_if_fail (E_IS_ALERT_BAR (alert_bar));
+	g_return_if_fail (E_IS_ALERT (alert));
+
+	show_it_now = g_queue_is_empty (&alert_bar->priv->alerts);
+	g_queue_push_tail (&alert_bar->priv->alerts, g_object_ref (alert));
+
+	if (show_it_now)
+		alert_bar_show_alert (alert_bar);
+}