1 files changed, 89 insertions, 0 deletions
diff --git a/ide/wg_Detachable.ml b/ide/wg_Detachable.ml
new file mode 100644
index 00000000..53c634d7
--- /dev/null
+++ b/ide/wg_Detachable.ml
@@ -0,0 +1,89 @@
+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015     *)
+(*   \VV/  **************************************************************)
+(*    //   *      This file is distributed under the terms of the       *)
+(*         *       GNU Lesser General Public License Version 2.1        *)
+(************************************************************************)
+
+class type detachable_signals =
+  object
+    inherit GContainer.container_signals
+    method attached : callback:(GObj.widget -> unit) -> unit
+    method detached : callback:(GObj.widget -> unit) -> unit
+  end
+
+class detachable (obj : ([> Gtk.box] as 'a) Gobject.obj) =
+
+  object(self)
+    inherit GPack.box_skel (obj :> Gtk.box Gobject.obj) as super
+
+    val but = GButton.button ()
+    val win = GWindow.window ()
+    val frame = GBin.frame ~shadow_type:`NONE ()
+    val mutable detached = false
+    val mutable detached_cb = (fun _ -> ())
+    val mutable attached_cb = (fun _ -> ())
+
+    method child = frame#child
+    method add = frame#add
+    method pack ?from ?expand ?fill ?padding w =
+      if frame#all_children = [] then self#add w
+      else raise (Invalid_argument "detachable#pack")
+
+    method title = win#title
+    method set_title = win#set_title
+
+    method connect : detachable_signals = object
+      inherit GContainer.container_signals_impl obj
+      method attached ~callback = attached_cb <- callback
+      method detached ~callback = detached_cb <- callback
+    end
+
+    method show =
+      if detached then win#present ()
+      else self#misc#show ();
+
+    method hide =
+      if detached then win#misc#hide ()
+      else self#misc#hide ()
+
+    method visible = win#misc#visible || self#misc#visible
+
+    method frame = frame
+
+    method button = but
+
+    method attach () =
+      win#misc#hide ();
+      frame#misc#reparent self#coerce;
+      detached <- false;
+      attached_cb self#child
+
+    method detach () =
+      frame#misc#reparent win#coerce;
+      self#misc#hide ();
+      win#present ();
+      detached <- true;
+      detached_cb self#child
+
+    initializer
+      self#set_homogeneous false;
+      super#pack ~expand:false but#coerce;
+      super#pack ~expand:true ~fill:true frame#coerce;
+      win#misc#hide ();
+      but#add (GMisc.label
+        ~markup:"<span size='x-small'>D\nE\nT\nA\nC\nH</span>" ())#coerce;
+      ignore(win#event#connect#delete ~callback:(fun _ -> self#attach (); true));
+      ignore(but#connect#clicked ~callback:(fun _ -> self#detach ()))
+
+  end
+
+let detachable ?title =
+  GtkPack.Box.make_params [] ~cont:(
+    GContainer.pack_container
+      ~create:(fun p ->
+         let d = new detachable (GtkPack.Box.create `HORIZONTAL p) in
+         Option.iter d#set_title title;
+         d))
+