[gimp] Add gimp_statusbar_set_shell()

[Michael Natterer <mitch src gnome org>]

commit 82aa4084abd2b8d87bce345185aab9087fb27c8a
Author: Michael Natterer <mitch gimp org>
Date:   Thu Sep 24 09:35:34 2009 +0200

    Add gimp_statusbar_set_shell()
    
    Reconnect signals when a new shell is set; reorganize internal code to
    not set up permanent connections to one specific shell.

 app/display/gimpstatusbar.c |   43 ++++++++++++++++++++++++++++++++++++-------
 app/display/gimpstatusbar.h |    2 ++
 2 files changed, 38 insertions(+), 7 deletions(-)
---
diff --git a/app/display/gimpstatusbar.c b/app/display/gimpstatusbar.c
index 99756d4..94c0288 100644
--- a/app/display/gimpstatusbar.c
+++ b/app/display/gimpstatusbar.c
@@ -105,6 +105,8 @@ static void     gimp_statusbar_unit_changed       (GimpUnitComboBox  *combo,
                                                    GimpStatusbar     *statusbar);
 static void     gimp_statusbar_scale_changed      (GimpScaleComboBox *combo,
                                                    GimpStatusbar     *statusbar);
+static void     gimp_statusbar_scale_activated    (GimpScaleComboBox *combo,
+                                                   GimpStatusbar     *statusbar);
 static void     gimp_statusbar_shell_scaled       (GimpDisplayShell  *shell,
                                                    GimpStatusbar     *statusbar);
 static guint    gimp_statusbar_get_context_id     (GimpStatusbar     *statusbar,
@@ -207,6 +209,10 @@ gimp_statusbar_init (GimpStatusbar *statusbar)
                     G_CALLBACK (gimp_statusbar_scale_changed),
                     statusbar);
 
+  g_signal_connect (statusbar->scale_combo, "entry-activated",
+                    G_CALLBACK (gimp_statusbar_scale_activated),
+                    statusbar);
+
   /*  put the label back into our hbox  */
   gtk_box_pack_start (GTK_BOX (hbox),
                       GTK_STATUSBAR (statusbar)->label, TRUE, TRUE, 1);
@@ -651,17 +657,33 @@ gimp_statusbar_new (GimpDisplayShell *shell)
 
   statusbar = g_object_new (GIMP_TYPE_STATUSBAR, NULL);
 
+  gimp_statusbar_set_shell (statusbar, shell);
+
+  return GTK_WIDGET (statusbar);
+}
+
+void
+gimp_statusbar_set_shell (GimpStatusbar    *statusbar,
+                          GimpDisplayShell *shell)
+{
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+  g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
+
+  if (shell == statusbar->shell)
+    return;
+
+  if (statusbar->shell)
+    {
+      g_signal_handlers_disconnect_by_func (statusbar->shell,
+                                            gimp_statusbar_shell_scaled,
+                                            statusbar);
+    }
+
   statusbar->shell = shell;
 
-  g_signal_connect_object (shell, "scaled",
+  g_signal_connect_object (statusbar->shell, "scaled",
                            G_CALLBACK (gimp_statusbar_shell_scaled),
                            statusbar, 0);
-
-  g_signal_connect_object (statusbar->scale_combo, "entry-activated",
-                           G_CALLBACK (gtk_widget_grab_focus),
-                           shell->canvas, G_CONNECT_SWAPPED);
-
-  return GTK_WIDGET (statusbar);
 }
 
 gboolean
@@ -1391,6 +1413,13 @@ gimp_statusbar_scale_changed (GimpScaleComboBox *combo,
                             GIMP_ZOOM_FOCUS_BEST_GUESS);
 }
 
+static void
+gimp_statusbar_scale_activated (GimpScaleComboBox *combo,
+                                GimpStatusbar     *statusbar)
+{
+  gtk_widget_grab_focus (statusbar->shell->canvas);
+}
+
 static guint
 gimp_statusbar_get_context_id (GimpStatusbar *statusbar,
                                const gchar   *context)
diff --git a/app/display/gimpstatusbar.h b/app/display/gimpstatusbar.h
index 6582e24..bebc2ed 100644
--- a/app/display/gimpstatusbar.h
+++ b/app/display/gimpstatusbar.h
@@ -73,6 +73,8 @@ struct _GimpStatusbarClass
 
 GType       gimp_statusbar_get_type         (void) G_GNUC_CONST;
 GtkWidget * gimp_statusbar_new              (GimpDisplayShell    *shell);
+void        gimp_statusbar_set_shell        (GimpStatusbar       *statusbar,
+                                             GimpDisplayShell    *shell);
 
 gboolean    gimp_statusbar_get_visible      (GimpStatusbar       *statusbar);
 void        gimp_statusbar_set_visible      (GimpStatusbar       *statusbar,