[mutter] MetaWindow: add a public method for checking if the application is responding

[Giovanni Campagna <gcampagna src gnome org>]

commit 57ff0f7071b6417e769401982ac145ed3a697090
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Mon Dec 24 18:15:23 2012 +0100

    MetaWindow: add a public method for checking if the application is responding
    
    Add meta_window_check_alive(), which is a simple wrapper over
    meta_display_ping_window(), and takes care of showing the "Application
    is not responding dialog" if needed.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=684340

 src/core/delete.c |   21 ++++++++++++++-------
 src/meta/window.h |    3 +++
 2 files changed, 17 insertions(+), 7 deletions(-)
---
diff --git a/src/core/delete.c b/src/core/delete.c
index 5422914..ded5dd4 100644
--- a/src/core/delete.c
+++ b/src/core/delete.c
@@ -134,6 +134,18 @@ delete_ping_timeout_func (MetaDisplay *display,
 }
 
 void
+meta_window_check_alive (MetaWindow *window,
+                         guint32     timestamp)
+{
+  meta_display_ping_window (window->display,
+                            window,
+                            timestamp,
+                            delete_ping_reply_func,
+                            delete_ping_timeout_func,
+                            window);
+}
+
+void
 meta_window_delete (MetaWindow  *window,
                     guint32      timestamp)
 {
@@ -156,13 +168,8 @@ meta_window_delete (MetaWindow  *window,
     }
   meta_error_trap_pop (window->display);
 
-  meta_display_ping_window (window->display,
-                            window,
-                            timestamp,
-                            delete_ping_reply_func,
-                            delete_ping_timeout_func,
-                            window);
-  
+  meta_window_check_alive (window, timestamp);
+
   if (window->has_focus)
     {
       /* FIXME Clean this up someday 
diff --git a/src/meta/window.h b/src/meta/window.h
index c8d49c9..4aec594 100644
--- a/src/meta/window.h
+++ b/src/meta/window.h
@@ -190,6 +190,9 @@ void        meta_window_kill               (MetaWindow  *window);
 void        meta_window_focus              (MetaWindow  *window,
                                             guint32      timestamp);
 
+void        meta_window_check_alive        (MetaWindow  *window,
+                                            guint32      timestamp);
+
 void meta_window_begin_grab_op (MetaWindow *window,
                                 MetaGrabOp  op,
                                 gboolean    frame_action,