[geary/wip/765516-gtk-widget-conversation-viewer: 81/101] Ensure collapsed conversation email attachment button isn't sensitive.

[Michael Gratton <mjog src gnome org>]

commit bb52054dc450105df98c5902872098a11e46ae38
Author: Michael James Gratton <mike vee net>
Date:   Fri Jun 17 20:48:14 2016 -0700

    Ensure collapsed conversation email attachment button isn't sensitive.

 .../conversation-viewer/conversation-email.vala    |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/client/conversation-viewer/conversation-email.vala 
b/src/client/conversation-viewer/conversation-email.vala
index 5104378..f8d0c2f 100644
--- a/src/client/conversation-viewer/conversation-email.vala
+++ b/src/client/conversation-viewer/conversation-email.vala
@@ -292,6 +292,7 @@ public class ConversationEmail : Gtk.Box {
     public void expand_email(bool include_transitions=true) {
         is_message_body_visible = true;
         get_style_context().add_class("geary_show_body");
+        attachments_button.set_sensitive(true);
         star_button.set_sensitive(true);
         unstar_button.set_sensitive(true);
         email_menubutton.set_sensitive(true);
@@ -301,6 +302,7 @@ public class ConversationEmail : Gtk.Box {
     public void collapse_email() {
         is_message_body_visible = false;
         get_style_context().remove_class("geary_show_body");
+        attachments_button.set_sensitive(false);
         star_button.set_sensitive(false);
         unstar_button.set_sensitive(false);
         email_menubutton.set_sensitive(false);
@@ -463,6 +465,7 @@ public class ConversationEmail : Gtk.Box {
         // ctor but we don't know at that point if any attachments
         // will be displayed inline.
         attachments_button.set_visible(true);
+        attachments_button.set_sensitive(false);
         primary_message.body_box.pack_start(attachments_box, false, false, 0);
 
         // Add each displayed attachment to the icon view