Enable "Match Selected" only if there's a field selected *and* we can do

a "Match Selected" on it - we can't do a "Match Selected" if the field
has no value (e.g., FT_NULL) and has a length of 0.

If we unselect the current packet, we don't have a protocol tree, so we
don't have a currently selected field - clear the "Match Selected" menu
item and the display in the status line of information about the
currently selected field.

Move the low-level statusbar manipulation into "gtk/main.c", in routines
whose API doesn't expose anything GTK+-ish.

"close_cap_file()" calls one of those routines to clear out the status
bar, so it doesn't need to take a pointer to the statusbar widget as an
argument.

"clear_tree_and_hex_views()" is purely a display-manipulating routine;
move it to "gtk/proto_draw.c".

Extract from "tree_view_unselect_row_cb()" an "unselect_field()" routine
to do all the work that needs to be done if the currently selected
protocol tree row is unselected, and call it if the currently selected
packet list row is unselected (if it's unselected, there *is* no
protocol tree, so no row can be selected), as well as from
"tree_view_unselect_row_cb()".

Before pushing a new field-description message onto the statusbar, pop
the old one off.

Get rid of an unused variable (set, but not used).

svn path=/trunk/; revision=3513

1 files changed, 56 insertions, 0 deletions

diff --git a/statusbar.h b/statusbar.h
new file mode 100644
index 0000000000..a7b3b4903b
--- /dev/null
+++ b/statusbar.h
@@ -0,0 +1,56 @@
+/* statusbar.h
+ * Definitions for status bar UI routines
+ *
+ * $Id: statusbar.h,v 1.1 2001/06/05 07:39:31 guy Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * Copyright 1998 Gerald Combs
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef __STATUSBAR_H__
+#define __STATUSBAR_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/*
+ * Push a message referring to file access onto the statusbar.
+ */
+void statusbar_push_file_msg(gchar *msg);
+
+/*
+ * Pop a message referring to file access off the statusbar.
+ */
+void statusbar_pop_file_msg(void);
+
+/*
+ * Push a message referring to the currently-selected field onto the statusbar.
+ */
+void statusbar_push_field_msg(gchar *msg);
+
+/*
+ * Pop a message referring to the currently-selected field off the statusbar.
+ */
+void statusbar_pop_field_msg(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __STATUSBAR_H__ */