[PATCH v2 1/2] ui/gtk: detach_all option for making all VCs detached upon starting

[Dongwon Kim <dongwon.kim@intel.com>]

With "detach-all=on" for display, all VCs are detached from the beginning.
This is useful when there are multiple displays assigned to a guest OS.

v2: Move "detach-all" option to under DisplayGTK as it's GTK specific
    (Thomas Huth)

Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Signed-off-by: Khairul Anuar Romli <khairul.anuar.romli@intel.com>
---
 qapi/ui.json | 5 ++++-
 ui/gtk.c     | 7 +++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/qapi/ui.json b/qapi/ui.json
index 1052ca9c38..e37af91683 100644
--- a/qapi/ui.json
+++ b/qapi/ui.json
@@ -1035,13 +1035,16 @@
 #               assuming the guest will resize the display to match
 #               the window size then.  Otherwise it defaults to "off".
 #               Since 3.1
+# @detach-all:  Detach all VirtualConsoles when starting Qemu (default: off).
+#               Since 6.0
 #
 # Since: 2.12
 #
 ##
 { 'struct'  : 'DisplayGTK',
   'data'    : { '*grab-on-hover' : 'bool',
-                '*zoom-to-fit'   : 'bool'  } }
+                '*zoom-to-fit'   : 'bool',
+                '*detach-all'    : 'bool'  } }
 
 ##
 # @DisplayEGLHeadless:
diff --git a/ui/gtk.c b/ui/gtk.c
index 98046f577b..48c1fff54f 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -2189,6 +2189,7 @@ static void gtk_display_init(DisplayState *ds, DisplayOptions *opts)
     GdkDisplay *window_display;
     GtkIconTheme *theme;
     char *dir;
+    int i;
 
     if (!gtkinit) {
         fprintf(stderr, "gtk initialization failed\n");
@@ -2268,6 +2269,12 @@ static void gtk_display_init(DisplayState *ds, DisplayOptions *opts)
         gtk_menu_item_activate(GTK_MENU_ITEM(s->grab_on_hover_item));
     }
     gd_clipboard_init(s);
+
+    if (opts->u.gtk.detach_all) {
+        for (i = 0; i < s->nb_vcs - 1; i++) {
+            gtk_menu_item_activate(GTK_MENU_ITEM(s->untabify_item));
+        }
+    }
 }
 
 static void early_gtk_display_init(DisplayOptions *opts)
-- 
2.17.1