[evolution] Bug 790291 - Disallow shrinking message list to zero width

[Milan Crha <mcrha src gnome org>]

commit cf474cb4a0f3249cd686021e9af11f5394bbfc32
Author: Milan Crha <mcrha redhat com>
Date:   Tue Nov 21 18:23:55 2017 +0100

    Bug 790291 - Disallow shrinking message list to zero width

 src/mail/message-list.c |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/src/mail/message-list.c b/src/mail/message-list.c
index 95bb875..0a1e80e 100644
--- a/src/mail/message-list.c
+++ b/src/mail/message-list.c
@@ -2853,6 +2853,22 @@ ml_style_updated_cb (MessageList *message_list)
 }
 
 static void
+message_list_get_preferred_width (GtkWidget *widget,
+                                 gint *out_minimum_width,
+                                 gint *out_natural_width)
+{
+       /* Chain up to parent's method. */
+       GTK_WIDGET_CLASS (message_list_parent_class)->get_preferred_width (widget, out_minimum_width, 
out_natural_width);
+
+       if (out_minimum_width && *out_minimum_width < 50)
+               *out_minimum_width = 50;
+
+       if (out_natural_width && out_minimum_width &&
+           *out_natural_width < *out_minimum_width)
+               *out_natural_width = *out_minimum_width;
+}
+
+static void
 message_list_set_session (MessageList *message_list,
                           EMailSession *session)
 {
@@ -3552,6 +3568,7 @@ static void
 message_list_class_init (MessageListClass *class)
 {
        GObjectClass *object_class;
+       GtkWidgetClass *widget_class;
 
        if (!ml_drag_info[0].atom) {
                gint ii;
@@ -3571,6 +3588,9 @@ message_list_class_init (MessageListClass *class)
 
        g_type_class_add_private (class, sizeof (MessageListPrivate));
 
+       widget_class = GTK_WIDGET_CLASS (class);
+       widget_class->get_preferred_width = message_list_get_preferred_width;
+
        object_class = G_OBJECT_CLASS (class);
        object_class->set_property = message_list_set_property;
        object_class->get_property = message_list_get_property;