[mutter] compositor: emit grab-op-begin/end signals on plugin grabs

[Jasper St. Pierre <jstpierre src gnome org>]

commit 79e682bcd0034dd6ab20622d5b8ba287b8c61e75
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Jun 25 16:38:29 2014 +0200

    compositor: emit grab-op-begin/end signals on plugin grabs
    
    This makes it possible to track there grabs triggered this way, in
    addition to the ones handled by mutter.

 src/compositor/compositor.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/src/compositor/compositor.c b/src/compositor/compositor.c
index e999ca6..eced047 100644
--- a/src/compositor/compositor.c
+++ b/src/compositor/compositor.c
@@ -385,6 +385,10 @@ meta_begin_modal_for_plugin (MetaCompositor   *compositor,
   display->grab_have_pointer = TRUE;
   display->grab_have_keyboard = TRUE;
 
+  g_signal_emit_by_name (display, "grab-op-begin",
+                         meta_plugin_get_screen (plugin),
+                         display->grab_window, display->grab_op);
+
   if (meta_is_wayland_compositor ())
     meta_display_sync_wayland_input_focus (display);
 
@@ -401,6 +405,10 @@ meta_end_modal_for_plugin (MetaCompositor *compositor,
 
   g_return_if_fail (is_modal (display));
 
+  g_signal_emit_by_name (display, "grab-op-end",
+                         meta_plugin_get_screen (plugin),
+                         display->grab_window, display->grab_op);
+
   display->grab_op = META_GRAB_OP_NONE;
   display->grab_window = NULL;
   display->grab_have_pointer = FALSE;