+class clickable_math_view obj =
+ let href = Gdome.domString "href" in
+ let xref = Gdome.domString "xref" in
+ object (self)
+ inherit GMathViewAux.multi_selection_math_view obj
+
+ val mutable href_callback: (UriManager.uri -> unit) option = None
+ method set_href_callback f = href_callback <- f
+
+ initializer
+ ignore (self#connect#selection_changed self#choose_selection);
+ ignore (self#connect#click (fun (gdome_elt, _, _, _) ->
+ match gdome_elt with
+ | Some elt (* element is an hyperlink, use href_callback on it *)
+ when elt#hasAttributeNS ~namespaceURI:Misc.xlink_ns ~localName:href ->
+ (match href_callback with
+ | None -> ()
+ | Some f ->
+ let uri =
+ elt#getAttributeNS ~namespaceURI:Misc.xlink_ns ~localName:href
+ in
+ f (UriManager.uri_of_string (uri#to_string)))
+ | Some elt -> ignore (self#action_toggle elt)
+ | None -> ()))
+ method private choose_selection gdome_elt =
+ let rec aux elt =
+ if elt#hasAttributeNS ~namespaceURI:Misc.helm_ns ~localName:xref then
+ self#set_selection (Some elt)
+ else
+ try
+ (match elt#get_parentNode with
+ | None -> assert false
+ | Some p -> aux (new Gdome.element_of_node p))
+ with GdomeInit.DOMCastException _ -> ()
+(* debug_print "trying to select above the document root" *)
+ in
+ match gdome_elt with
+ | Some elt -> aux elt
+ | None -> self#set_selection None
+ end
+
+let clickable_math_view =
+ GtkBase.Widget.size_params
+ ~cont:(OgtkMathViewProps.pack_return (fun p ->
+ OgtkMathViewProps.set_params
+ (new clickable_math_view (GtkMathViewProps.MathView_GMetaDOM.create p))
+ ~font_size:None ~log_verbosity:None))
+ []
+let clickable_math_view () = clickable_math_view ()
+