[glabels] Make glFieldButtonMenu multi-columned for large number of keys.

[Jim Evins <jimevins src gnome org>]

commit 1a23b8164c972458c3a434e892c6810939ac424b
Author: Jim Evins <evins snaught com>
Date:   Wed Oct 21 22:34:10 2009 -0400

    Make glFieldButtonMenu multi-columned for large number of keys.
    
    Make glFieldButtonMenu multi-columned for large number of keys.  I don't know
    why, but I need to unrealize the old menu whenever reloading a new set of
    keys -- otherwise, the new menu would not render properly.
    
    Also, cleared the CAN_FOCUS and CAN_DEFAULT bits for the instance in
    the object editor text edit page, so that it would not steal the focus
    from the text editor.

 src/field-button-menu.c       |   32 ++++++++++++++++++++++----------
 src/object-editor-edit-page.c |    2 ++
 2 files changed, 24 insertions(+), 10 deletions(-)
---
diff --git a/src/field-button-menu.c b/src/field-button-menu.c
index 38f2348..37509f2 100644
--- a/src/field-button-menu.c
+++ b/src/field-button-menu.c
@@ -29,6 +29,7 @@
 
 #include "debug.h"
 
+#define MAX_MENU_ROWS 25
 
 /*===========================================*/
 /* Private types                             */
@@ -176,6 +177,7 @@ gl_field_button_menu_set_keys (glFieldButtonMenu *this,
         GList     *p;
         GtkWidget *menu_item;
         gchar     *key;
+        gint       i, i_row, i_col;
 
         gl_debug (DEBUG_FIELD_BUTTON, "START");
 
@@ -187,24 +189,34 @@ gl_field_button_menu_set_keys (glFieldButtonMenu *this,
                 menu_item = GTK_WIDGET (p->data);
                 key = g_object_get_data (G_OBJECT (menu_item), "key");
                 g_free (key);
-                gtk_widget_destroy (menu_item);
+                gtk_container_remove (GTK_CONTAINER (this), menu_item);
         }
         g_list_free (this->priv->menu_items);
         this->priv->menu_items = NULL;
+        gtk_widget_unrealize (GTK_WIDGET (this)); /* Start over with new Gdk resources. */
 
         /*
          * Add new menu items.
          */
-        for ( p = key_list; p != NULL; p = p->next )
+        for ( p = key_list, i = 0; p != NULL; p = p->next, i++ )
         {
-                gl_debug (DEBUG_FIELD_BUTTON, "Adding key: %s", p->data);
-                menu_item = gtk_menu_item_new_with_label (p->data);
-                g_object_set_data (G_OBJECT (menu_item), "key", g_strdup (p->data));
-                g_signal_connect (G_OBJECT (menu_item), "activate", 
-                                  G_CALLBACK (activate_cb), this);
-                gtk_menu_shell_append (GTK_MENU_SHELL (this), menu_item);
-                this->priv->menu_items =
-                        g_list_append (this->priv->menu_items, menu_item);
+                if ( p->data && strlen (p->data) )
+                {
+
+                        gl_debug (DEBUG_FIELD_BUTTON, "Adding key: %s", p->data);
+
+                        menu_item = gtk_menu_item_new_with_label (p->data);
+                        gtk_widget_show (menu_item);
+                        g_object_set_data (G_OBJECT (menu_item), "key", g_strdup (p->data));
+                        g_signal_connect (G_OBJECT (menu_item), "activate", 
+                                          G_CALLBACK (activate_cb), this);
+                        this->priv->menu_items =
+                                g_list_append (this->priv->menu_items, menu_item);
+
+                        i_row = i % MAX_MENU_ROWS;
+                        i_col = i / MAX_MENU_ROWS;
+                        gtk_menu_attach (GTK_MENU (this), menu_item, i_col, i_col+1, i_row, i_row+1);
+                }
         }
 
         gl_debug (DEBUG_FIELD_BUTTON, "END");
diff --git a/src/object-editor-edit-page.c b/src/object-editor-edit-page.c
index 949f023..c85ff5b 100644
--- a/src/object-editor-edit-page.c
+++ b/src/object-editor-edit-page.c
@@ -76,6 +76,8 @@ gl_object_editor_prepare_edit_page (glObjectEditor       *editor)
 	editor->priv->edit_insert_field_button = gl_field_button_new (_("Insert merge field"));
         gtk_box_pack_start (GTK_BOX (editor->priv->edit_insert_field_vbox),
                             editor->priv->edit_insert_field_button, FALSE, FALSE, 0);
+        GTK_WIDGET_UNSET_FLAGS (editor->priv->edit_insert_field_button,
+                                GTK_CAN_FOCUS | GTK_CAN_DEFAULT);
 
 	/* Un-hide */
 	gtk_widget_show_all (editor->priv->edit_page_vbox);