[geary] Check if composer is already closing before asking about closing

[Robert Schroll <rschroll src gnome org>]

commit 09487f0a1011caa67a022fdc77e050d043f9591d
Author: Robert Schroll <rschroll gmail com>
Date:   Fri Jan 16 16:39:55 2015 -0800

    Check if composer is already closing before asking about closing
    
    The composer can hide itself while the draft manager is in the process
    of closing up.  If we try to close that composer again, it should
    automatically return PENDING_CLOSE instead of asking the user what to
    do.

 src/client/composer/composer-widget.vala |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/src/client/composer/composer-widget.vala b/src/client/composer/composer-widget.vala
index a2b4de6..af529f3 100644
--- a/src/client/composer/composer-widget.vala
+++ b/src/client/composer/composer-widget.vala
@@ -242,6 +242,7 @@ public class ComposerWidget : Gtk.EventBox {
     private Geary.EmailIdentifier? editing_draft_id = null;
     private Geary.EmailFlags draft_flags = new Geary.EmailFlags.with(Geary.EmailFlags.DRAFT);
     private uint draft_save_timeout_id = 0;
+    private bool is_closing = false;
     
     public WebKit.WebView editor;
     // We need to keep a reference to the edit-fixer in composer-window, so it doesn't get
@@ -1008,6 +1009,9 @@ public class ComposerWidget : Gtk.EventBox {
     }
 
     public CloseStatus should_close() {
+        if (is_closing)
+            return CloseStatus.PENDING_CLOSE;
+        
         bool try_to_save = can_save();
         
         container.present();
@@ -1175,6 +1179,7 @@ public class ComposerWidget : Gtk.EventBox {
     // Used internally by on_send()
     private async void on_send_async() {
         container.vanish();
+        is_closing = true;
         
         linkify_document(editor.get_dom_document());
         
@@ -1355,6 +1360,7 @@ public class ComposerWidget : Gtk.EventBox {
     
     private async void save_and_exit_async() {
         make_gui_insensitive();
+        is_closing = true;
         
         save_draft();
         try {
@@ -1371,6 +1377,7 @@ public class ComposerWidget : Gtk.EventBox {
     
     private async void discard_and_exit_async() {
         make_gui_insensitive();
+        is_closing = true;
         
         discard_draft();
         if (draft_manager != null)