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open StdLabels
module Js = Js_of_ocaml.Js
module PM = Prosemirror
type node_t = PM.Model.node Js.t
module FromMarkdown = struct
type t = PM.t * Omd.doc
(** Add the given mark in the mark list.
The attributes, if any, are added to the mark properties. *)
let add_attribute :
string
-> PM.Model.schema Js.t
-> PM.Model.mark Js.t list
-> Jv.prop PM.O.t Js.opt
-> PM.Model.mark Js.t list =
fun name schema marks attributes ->
match PM.O.get schema##.marks name with
| None -> marks
| Some mark_type ->
let m = schema##mark_fromType mark_type attributes in
m :: marks
(** The function [parse_inline] will tranform all the inline markup to a
Prosemirror node.
This apply to element like bold, links and so one. *)
let rec parse_inline_content :
Prosemirror.View.editor_view Js.t
-> PM.t
-> PM.Model.mark Js.t list
-> Omd.attributes Omd.inline
-> node_t Js.js_array Js.t =
fun view pm marks -> function
| Omd.Concat (attrs, els) ->
ignore attrs;
let nodes =
List.to_seq els
|> Seq.map (fun e -> parse_inline_content view pm marks e)
|> Array.of_seq
|> Js.array
in
(* Flatten each array returned *)
nodes##reduce_init
( Js.wrap_callback
@@ fun (init : node_t Js.js_array Js.t)
(elems : node_t Js.js_array Js.t)
_
_ ->
init##concat elems )
(new%js Js.array_empty)
| Omd.Strong (attrs, content) ->
(* Strong (or Emph) elements just add the coresponding mark and
process the content further *)
ignore attrs;
let marks =
add_attribute "strong" view##.state##.schema marks Js.null
in
parse_inline_content view pm marks content
| Omd.Emph (attrs, content) ->
ignore attrs;
let marks = add_attribute "em" view##.state##.schema marks Js.null in
parse_inline_content view pm marks content
| Omd.Text (attrs, text) ->
ignore attrs;
(* Convert the marks as js array *)
let js_marks = Js.array @@ Array.of_list marks in
Js.array
[| view##.state##.schema##text
(Jstr.of_string text)
(Js.some js_marks)
|]
| Omd.Code (attrs, content) ->
ignore attrs;
let marks = add_attribute "code" view##.state##.schema marks Js.null in
let js_marks = Js.array @@ Array.of_list marks in
Js.array
[| view##.state##.schema##text
(Jstr.of_string content)
(Js.some js_marks)
|]
| Omd.Link (attrs, link_attrs) ->
ignore attrs;
let attrs' =
PM.O.init
[| ("href", link_attrs.destination) (* TODO Handle title *) |]
in
let marks =
add_attribute "link" view##.state##.schema marks (Js.some attrs')
in
parse_inline_content view pm marks link_attrs.label
| Hard_break _ | Soft_break _ (* TODO Handle Break *)
|Image (_, _)
|Html (_, _) ->
Brr.Console.(log [ Jstr.v "Other" ]);
new%js Js.array_empty
let rec parse_block :
Prosemirror.View.editor_view Js.t
-> PM.t
-> Omd.attributes Omd.block
-> node_t option =
fun view pm -> function
| Omd.Paragraph (attrs, elements) ->
ignore attrs;
let marks = [] in
(* Transform each node inside the markdown document and add them into the
paragraph node *)
let nodes = parse_inline_content view pm marks elements in
let fragment = PM.Model.Fragment.from_array pm nodes in
let node =
view##.state##.schema##node
(Jstr.v "paragraph")
Js.null
(Js.some fragment)
Js.null
in
Some node
| Omd.Heading (attrs, level, elements) ->
ignore attrs;
let marks = [] in
(* Heading is like a paragraph, but with an attribute (the level) *)
let attributes =
object%js
val level = level
end
and nodes = parse_inline_content view pm marks elements in
let fragment = PM.Model.Fragment.from_array pm nodes in
let node =
view##.state##.schema##node
(Jstr.v "heading")
(Js.some attributes)
(Js.some fragment)
Js.null
in
Some node
| Omd.List (attrs, type_, spacing, elements) ->
ignore attrs;
ignore spacing;
let type_list =
match type_ with
| Omd.Ordered _ -> "ordered_list"
| Omd.Bullet _ -> "bullet_list"
in
(* The whole list node is declared as ordered or bullet depending of
the type given by the markdown.
Each element inside the list is transformed as a list_item.
The list_item node can itself contains other blocks (recursively) *)
let nodes =
List.map elements ~f:(fun list_entry ->
let nodes =
List.filter_map list_entry ~f:(fun e -> parse_block view pm e)
|> Array.of_list
|> Js.array
in
let fragment = PM.Model.Fragment.from_array pm nodes in
view##.state##.schema##node
(Jstr.v "list_item")
Js.null
(Js.some fragment)
Js.null )
in
let nodes_array = nodes |> Array.of_list |> Js.array in
let fragment = PM.Model.Fragment.from_array pm nodes_array in
let node =
view##.state##.schema##node
(Jstr.v type_list)
Js.null
(Js.some fragment)
Js.null
in
Some node
| Omd.Thematic_break attrs ->
ignore attrs;
let node =
view##.state##.schema##node
(Jstr.v "horizontal_rule")
Js.null
Js.null
Js.null
in
Some node
| Omd.Blockquote (attrs, elements) ->
ignore attrs;
let nodes =
List.filter_map elements ~f:(fun e -> parse_block view pm e)
|> Array.of_list
|> Js.array
in
let fragment = PM.Model.Fragment.from_array pm nodes in
let node =
view##.state##.schema##node
(Jstr.v "blockquote")
Js.null
(Js.some fragment)
Js.null
in
Some node
| Code_block (attrs, content, format) ->
ignore attrs;
(* The language format is ignored (I do not provide syntaxic
coloration) *)
ignore format;
(* TODO Check if this work *)
let nodes =
Js.array
[| view##.state##.schema##text (Jstr.of_string content) Js.null |]
in
let fragment = PM.Model.Fragment.from_array pm nodes in
let node =
view##.state##.schema##node
(Jstr.v "code_block")
Js.null
(Js.some fragment)
Js.null
in
Some node
| Html_block (_, _) | Definition_list (_, _) ->
Brr.Console.(log [ Jstr.v "Other block" ]);
None
let parse :
Prosemirror.View.editor_view Js.t
-> PM.t
-> Omd.doc
-> Prosemirror.Model.node Js.t =
fun view pm doc ->
Brr.Console.(log [ doc ]);
(* Transform each node inside the markdown document and add them into the
root node *)
let nodes =
doc
|> List.filter_map ~f:(fun b -> parse_block view pm b)
|> Array.of_list
|> Js.array
in
let fragment = PM.Model.Fragment.from_array pm nodes in
let document =
view##.state##.schema##node
(Jstr.v "doc")
Js.null
(Js.some fragment)
Js.null
in
Brr.Console.(log [ document ]);
document
let update : t -> State.t -> State.t =
fun (pm, doc) state ->
let _ = parse state.State.view pm doc in
state
end
|
