[glabels] Improved object editor default page selection

[Jim Evins <jimevins src gnome org>]

commit 5f45a608055226f06cd013a414439293174121f4
Author: Jim Evins <evins snaught com>
Date:   Thu Dec 3 22:25:15 2009 -0500

    Improved object editor default page selection
    
    Whenever the object is changed, an attempt is made to either keep the same
    page active or if that page is no longer visible, set to the first visible
    page.

 src/object-editor.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/src/object-editor.c b/src/object-editor.c
index ba112d7..cab3477 100644
--- a/src/object-editor.c
+++ b/src/object-editor.c
@@ -284,6 +284,7 @@ set_object (glObjectEditor  *editor,
         gchar         *title;
         gchar         *s;
         GtkTextBuffer *buffer;
+        gint           old_page, new_page;
 
 	gl_debug (DEBUG_EDITOR, "START");
 
@@ -300,6 +301,8 @@ set_object (glObjectEditor  *editor,
 
                 object_changed_cb (object, editor);
 
+                old_page = gtk_notebook_get_current_page (GTK_NOTEBOOK (editor->priv->notebook));
+
                 if (GL_IS_LABEL_BOX (object))
                 {
                         image = GL_STOCK_BOX;
@@ -429,6 +432,19 @@ set_object (glObjectEditor  *editor,
 
                 gtk_widget_show (editor->priv->notebook);
 
+                /* if the old active page is no longer visible, set to 1st visible page. */
+                new_page = gtk_notebook_get_current_page (GTK_NOTEBOOK (editor->priv->notebook));
+                if ( old_page != new_page )
+                {
+                        /* Trick: try in reverse order, only the last visible attempt will stick. */
+                        gtk_notebook_set_current_page (GTK_NOTEBOOK (editor->priv->notebook), 5);
+                        gtk_notebook_set_current_page (GTK_NOTEBOOK (editor->priv->notebook), 4);
+                        gtk_notebook_set_current_page (GTK_NOTEBOOK (editor->priv->notebook), 3);
+                        gtk_notebook_set_current_page (GTK_NOTEBOOK (editor->priv->notebook), 2);
+                        gtk_notebook_set_current_page (GTK_NOTEBOOK (editor->priv->notebook), 1);
+                        gtk_notebook_set_current_page (GTK_NOTEBOOK (editor->priv->notebook), 0);
+                }
+
                 g_signal_connect (G_OBJECT (object), "changed",
                                   G_CALLBACK (object_changed_cb), editor);
         }