1 (* Wrapper around Perl HTML::Element class.
2 * Copyright (C) 2003 Merjis Ltd.
3 * $Id: pl_HTML_Element.ml,v 1.2 2003-10-14 16:05:22 rich Exp $
8 type 'a content_t = Element of 'a | String of string
10 class html_element sv =
12 let rec assocs_of_svlist = function
14 | [x] -> failwith "HTML::Element all_attr returned odd-length list!"
15 | svname :: svvalue :: xs ->
16 (string_of_sv svname, string_of_sv svvalue) :: assocs_of_svlist xs
19 let rec list_of_svlist = function
22 string_of_sv sv :: list_of_svlist xs
30 string_of_sv (call_method sv "attr" [sv_of_string name])
31 method set_attr name value =
32 call_method_void sv "attr" [sv_of_string name; sv_of_string value]
34 string_of_sv (call_method sv "tag" [])
36 call_method_void sv "tag" [sv_of_string tag]
38 let sv = call_method sv "parent" [] in
40 method set_parent (parent : html_element) =
41 call_method_void sv "parent" [parent#sv]
43 let svlist = call_method_array sv "content_list" [] in
46 (* Not very satisfactory, but sv_type fails to discern the type
47 * for some reason. XXX
49 let str = string_of_sv c in
50 let marker = "HTML::Element=HASH(" in
51 let marker_len = String.length marker in
52 if String.length str > marker_len &&
53 String.sub str 0 marker_len = marker then
54 Element (new html_element c)
56 String (string_of_sv c)
59 let svlist = call_method_array sv "all_attr" [] in
60 assocs_of_svlist svlist
61 method all_attr_names =
62 let svlist = call_method_array sv "all_attr_names" [] in
64 method all_external_attr =
65 let svlist = call_method_array sv "all_external_attr" [] in
66 assocs_of_svlist svlist
67 method all_external_attr_names =
68 let svlist = call_method_array sv "all_external_attr_names" [] in
73 (* Note that "new" is a reserved word, so I've appended an _ character. *)
75 let rec loop = function
77 | (name, value) :: xs -> sv_of_string name :: sv_of_string value :: loop xs
79 let sv = call_class_method "HTML::Element" "new"
80 (sv_of_string tag :: loop attrs) in