/usr/lib/ocaml/lablgtk2/glade.ml is in liblablgtk2-ocaml-dev 2.16.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(* Lablgtk *)
(* *)
(* This program is free software; you can redistribute it *)
(* and/or modify it under the terms of the GNU Library General *)
(* Public License as published by the Free Software Foundation *)
(* version 2, with the exception described in file COPYING which *)
(* comes with the library. *)
(* *)
(* 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 Library General Public License for more details. *)
(* *)
(* You should have received a copy of the GNU Library 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 *)
(* *)
(* *)
(**************************************************************************)
(* $Id$ *)
open StdLabels
open Gtk
(* GladeXML widget *)
type glade_xml = [`data|`glade_xml]
external init : unit -> unit = "ml_glade_init"
(* external gnome_init : unit -> unit = "ml_glade_gnome_init" *)
external create :
?file:string -> ?data:string ->
?root:string -> ?domain:string -> unit -> glade_xml obj
= "ml_glade_xml_new"
external _signal_autoconnect :
[> `glade_xml] obj ->
(string * unit obj * string * unit obj option * bool -> unit) -> unit
= "ml_glade_xml_signal_autoconnect_full"
let signal_autoconnect self ~f =
_signal_autoconnect self
(fun (handler, obj, signal, target, after) ->
f ~handler ~signal ~after ?target obj)
external _signal_connect :
[> `glade_xml] obj -> string ->
(string * unit obj * string * unit obj option * bool -> unit) -> unit
= "ml_glade_xml_signal_connect_full"
let signal_connect self ~handler ~f =
_signal_connect self handler
(fun (handler, obj, signal, target, after) ->
f ~signal ~after ?target obj)
external get_widget : [> `glade_xml] obj -> name:string -> widget obj
= "ml_glade_xml_get_widget"
external get_widget_name : [> `widget] obj -> string
= "ml_glade_get_widget_name"
external get_widget_tree : [> `widget] obj -> glade_xml obj
= "ml_glade_get_widget_tree"
let get_widget_msg ~name ?info xml =
try get_widget ~name xml
with Gpointer.Null ->
let name = match info with None -> name | Some s -> s^":"^name in
failwith ("Glade error: " ^ name ^ " is not accessible.")
(* Signal handlers *)
open Gobject
type handler =
[ `Simple of (unit -> unit)
| `Object of string * (unit obj -> unit)
| `Custom of (Closure.argv -> data_get list -> unit) ]
let ($) f g x = g (f x)
let gtk_bool b argv _ = Closure.set_result argv (`BOOL b)
let known_handlers : (string, handler) Hashtbl.t = Hashtbl.create 11
let add_handler ~name handler =
Hashtbl.add known_handlers name handler
open GtkBase
let _ = List.iter ~f:(fun (name,h) -> add_handler ~name h)
[ "gtk_widget_destroy",`Object ("GtkObject", Object.cast $ Object.destroy);
"gtk_main_quit", `Simple GtkMain.Main.quit;
"gtk_widget_show", `Object ("GtkWidget", Widget.cast $ Widget.show);
"gtk_widget_hide", `Object ("GtkWidget", Widget.cast $ Widget.hide);
"gtk_widget_grab_focus",
`Object ("GtkWidget",
Widget.cast $ fun w -> set Widget.P.has_focus w true);
"gtk_window_activate_default",
`Object ("GtkWindow", fun w -> ignore (GtkWindow.Window.activate_default
(GtkWindow.Window.cast w)));
"gtk_true", `Custom (gtk_bool true);
"gtk_false", `Custom (gtk_bool false);
]
open Printf
let check_handler ?target ?(name="<unknown>") handler =
match handler with
`Simple f ->
fun _ -> f ()
| `Object (cls, f) ->
begin match target with
None ->
eprintf "Glade-warning: %s requires an object argument.\n" name;
raise Not_found
| Some obj ->
if Gobject.is_a obj cls then
fun _ -> f obj
else begin
eprintf "Glade-warning: %s expects a %s argument.\n" name cls;
raise Not_found
end
end
| `Custom f ->
if target <> None then
eprintf "Glade-warning: %s does not take an object argument.\n" name;
fun argv -> f argv (Closure.get_args argv)
let bind_handlers ?(extra=[]) ?(warn=false) xml =
signal_autoconnect xml ~f:
begin fun ~handler:name ~signal ~after ?target obj ->
try
let handler =
try List.assoc name extra
with Not_found -> Hashtbl.find known_handlers name
in
let callback = check_handler ?target ~name handler in
ignore (GtkSignal.connect_by_name obj ~name:signal ~after
~callback:(Closure.create callback))
with Not_found ->
if warn then eprintf "Glade.bind_handlers: no handler for %s\n" name
end;
flush stderr
let bind_handler ~name ~handler ?(warn=true) xml =
let warn = ref warn in
signal_connect xml ~handler:name ~f:
begin fun ~signal ~after ?target obj ->
warn := false;
let callback = check_handler ?target ~name handler in
ignore (GtkSignal.connect_by_name obj ~name:signal ~after
~callback:(Closure.create callback))
end;
if !warn then begin
eprintf "Glade-warning: handler %s is not used\n" name;
flush stderr
end
(* To list bindings *)
let ($) f g x = g (f x)
let show_option sh = function None -> "None" | Some x -> "Some " ^ sh x
let print_binding oc ~handler ~signal ~after ?target obj =
Printf.fprintf oc "object=%s, signal=%s, handler=%s, target=%s\n"
(get_widget_name (GtkBase.Widget.cast obj)) signal handler
(show_option (GtkBase.Widget.cast $ get_widget_name) target)
let print_bindings oc xml =
signal_autoconnect xml ~f:(print_binding oc); flush oc
let trace_handlers oc xml =
signal_autoconnect xml ~f:
begin fun ~handler ~signal ~after ?target obj ->
let callback _ =
if signal = "" then
Printf.fprintf oc "Glade-debug: handler %s called\n" handler
else
Printf.fprintf oc
"Glade-debug: %s called by signal %s on widget %s\n"
handler signal (get_widget_name (GtkBase.Widget.cast obj));
flush oc
in
ignore (GtkSignal.connect_by_name obj ~name:signal ~after
~callback:(Closure.create callback))
end
(* class skeleton, for use in generated wrappers *)
let create ?file ?data ?root ?domain () =
init (); create ?file ?data ?root ?domain ()
class xml ?trace ?(autoconnect = true) (xmldata : glade_xml Gtk.obj) =
let () = match trace with Some oc -> trace_handlers oc xmldata | None -> () in
let () = if autoconnect then bind_handlers xmldata in
object (self)
val xml = xmldata
method xml = xmldata
method bind ~name ~callback =
bind_handler ~name ~handler:(`Simple callback) ~warn:true xmldata
end
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