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|
open StdLabels
open Js_of_ocaml
open Brr
open Note
open Brr_note
module Printer = Css_lib.Print
let min = Printer.minify_printer
type file = {
file : File.t
; css : Css.Types.Stylesheet.t option
}
type state = {
files : file Js.js_array Js.t
; result_css : Css.Types.Stylesheet.t option
; elements : int
}
module App = Application.Make (struct
type t = state
end)
let init = { files = new%js Js.array_empty; result_css = None; elements = 0 }
let build_result : file Js.js_array Js.t -> Css.Types.Stylesheet.t option =
fun documents ->
let merge_result =
documents##reduce_init
( Js.wrap_callback @@ fun acc v _idx _arr ->
match (acc, v.css) with
| None, None -> None
| None, Some css -> Some Css_lib.Merge.(add_css empty css)
| Some res, Some css -> Some Css_lib.Merge.(add_css res css)
| v, None -> v )
None
in
Option.map Css_lib.Merge.extract_css merge_result
module AddFile = struct
type t = file
let process file state =
let _ = state.files##push file in
let elements = state.files##.length
and result_css = build_result state.files in
{ state with elements; result_css }
end
module DelFile = struct
type t = File.t
let process file state =
let files =
state.files##filter
(Js.wrap_callback @@ fun elt _ _ -> Js.bool (elt.file != file))
in
let elements = files##.length and result_css = build_result files in
{ files; elements; result_css }
end
let header =
let button = El.span [ El.txt' "Retirer" ] in
El.set_inline_style (Jstr.v "float") (Jstr.v "right") button;
let block = El.div [ El.span [ El.txt' "Fichier" ]; button ] in
El.set_inline_style El.Style.display (Jstr.v "block") block;
block
let file_list : App.event E.send -> file -> El.t =
fun sender f ->
let icon =
El.i [] ~at:At.[ class' (Jstr.v "fas"); class' (Jstr.v "fa-check") ]
in
let button =
El.i [] ~at:At.[ class' (Jstr.v "fas"); class' (Jstr.v "fa-times-circle") ]
in
El.set_inline_style (Jstr.v "float") (Jstr.v "right") button;
ignore
@@ Ev.listen Ev.click
(fun _ -> sender (App.dispatch (module DelFile) f.file))
(El.as_target button);
match f.css with
(* A css exists, add the icon element *)
| Some _ -> El.div [ El.txt (File.name f.file); icon; button ]
| None -> El.div [ El.txt (File.name f.file); button ]
let buttons : state -> El.t -> El.t list =
fun state input ->
let b =
El.button
[ El.txt' "Ajouter un fichier…" ]
~at:[ At.class' (Jstr.v "button") ]
in
let d =
El.button [ El.txt' "Télécharger" ] ~at:[ At.class' (Jstr.v "button") ]
in
ignore @@ Ev.listen Ev.click (fun _e -> El.click input) (El.as_target b);
ignore
@@ Ev.listen Ev.click
(fun _ ->
ignore
@@
match state.result_css with
| None -> ()
| Some result ->
let formatter = Format.str_formatter in
Css_lib.Print.(css minify_printer formatter result);
let content = Format.flush_str_formatter () in
Elements.Transfert.send ~mime_type:(Jstr.v "text/css")
~filename:(Jstr.v "result.css") (Jstr.v content))
(El.as_target d);
let has_css =
state.files##some
(Js.wrap_callback (fun elem _idx _arr -> Js.bool (elem.css != None)))
in
match Js.to_bool has_css with
| true -> [ b; d ]
| false -> [ b ]
let display_content css =
match css with
| None -> []
| Some result ->
let formatter = Format.str_formatter in
Css_lib.Print.(css pretty_printer formatter result);
let content = Format.flush_str_formatter () in
let area = El.textarea [ El.txt' content ] in
El.set_inline_style (Jstr.v "width") (Jstr.v "100%") area;
El.set_inline_style (Jstr.v "height") (Jstr.v "200px") area;
El.set_inline_style (Jstr.v "max-height") (Jstr.v "50vh") area;
El.set_inline_style (Jstr.v "resize") (Jstr.v "none") area;
[ El.h2 [ El.txt' "Prévisualisation" ]; area ]
let main id =
match Jv.is_none id with
| true -> Console.(error [ str "No element with id '%s' found"; id ])
| false ->
let elements = El.div [] in
let del_file_event, del_file_sender = Note.E.create () in
let input, file_event = Elements.Input.file_loader (Jstr.v "css") in
let add_file_event =
Note.E.map
(fun Elements.Input.{ file; content } ->
let str_content = Jstr.to_string content in
let css =
try Some (Css.Parser.parse_stylesheet str_content) with
| _ -> None
in
App.dispatch (module AddFile) { file; css })
file_event
in
let state = App.run init (E.select [ add_file_event; del_file_event ]) in
(* For each file, add a delete button *)
let _ =
Elr.def_children elements
(S.map
(fun state ->
let elements =
Jv.to_list
(fun x -> file_list del_file_sender (Jv.Id.of_jv x))
(Jv.Id.to_jv state.files)
in
match elements with
| [] -> display_content state.result_css
| _ ->
List.append (header :: elements)
(display_content state.result_css))
state)
in
let header = El.span [] in
(* The input is hidden, it will be activated by a button *)
El.set_inline_style El.Style.display (Jstr.v "none") input;
Elr.def_children header
(S.map (fun state -> input :: buttons state input) state);
El.set_children (Jv.Id.of_jv id) [ El.p [ header ]; elements ]
let () =
let open Jv in
let main = obj [| ("attach", repr main) |] in
set global "merger" main
|
