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|
module Js = Js_of_ocaml.Js
module PM = Prosemirror
module Footnotes = Footnotes
(** Commands *)
let change_level :
PM.t -> PM.Model.resolved_pos Js.t -> int -> (int -> bool) -> PM.Commands.t
=
fun pm res incr pred state dispatch ->
let parent = res##.parent in
let attributes = parent##.attrs in
let current_level =
if Jv.is_none attributes##.level then 0 else attributes##.level
in
let t, props =
match pred current_level with
| false ->
( PM.O.get state##.schema##.nodes "heading"
, Js.some
(object%js
val level = current_level + incr
end ) )
| true ->
(PM.O.get state##.schema##.nodes "paragraph", Js.null)
in
match t with
| None ->
Js._false
| Some t ->
PM.Commands.set_block_type pm t props state dispatch
(** Increase the title level by one when pressing # at the begining of a line *)
let handle_sharp pm state dispatch =
let res = PM.State.selection_to state##.selection in
match Js.Opt.to_option res##.nodeBefore with
| Some _ ->
Js._false
| None ->
(* Line start *)
( match Jstr.to_string res##.parent##._type##.name with
| "heading" ->
change_level pm res 1 (fun x -> x > 5) state dispatch
| "paragraph" ->
( match PM.O.get state##.schema##.nodes "heading" with
| None ->
Js._false
| Some t ->
let props =
Js.some
(object%js
val level = 1
end )
in
PM.Commands.set_block_type pm t props state dispatch )
| _ ->
Js._false )
let handle_backspace pm state dispatch =
let res = PM.State.selection_to state##.selection in
match Js.Opt.to_option res##.nodeBefore with
| Some _ ->
Js._false
| None ->
(* Line start *)
( match Jstr.to_string res##.parent##._type##.name with
| "heading" ->
change_level pm res (-1) (fun x -> x <= 1) state dispatch
| _ ->
Js._false )
(** Activate the given mark at position.
[toggle_mark regex pm] will create a rule with the given regex, and
then apply the mark *)
let toggle_mark :
Js.regExp Js.t -> PM.t -> string -> PM.InputRule.input_rule Js.t =
fun regExp pm mark_type_name ->
PM.InputRule.create
pm
regExp
~fn:
( Js.wrap_callback
@@ fun (state : PM.State.editor_state Js.t) _ ~from ~to_ ->
match PM.O.get state##.schema##.marks mark_type_name with
| None ->
Js.null
| Some mark_type ->
let m = state##.schema##mark_fromType mark_type Js.null in
(* Delete the markup code *)
let tr = state##.tr##delete ~from ~to_ in
(* Check if the mark is active at the position *)
let present =
Js.Opt.bind
(PM.State.cursor tr##.selection)
(fun resolved ->
Js.Opt.map
(mark_type##isInSet (resolved##marks ()))
(fun _ -> resolved) )
in
Js.Opt.case
present
(fun () ->
let tr = tr##addStoredMark m in
Js.some @@ tr )
(fun _resolved ->
let tr = tr##removeStoredMark_mark m in
Js.some tr ) )
(** Transform the selection into URL *)
let into_url : Js.regExp Js.t -> PM.t -> PM.InputRule.input_rule Js.t =
fun regExp pm ->
PM.InputRule.create
pm
regExp
~fn:
( Js.wrap_callback
@@ fun (state : PM.State.editor_state Js.t) content ~from ~to_ ->
let matched_text = Js.array_get content 1 |> Js.Optdef.to_option
and mark = PM.O.get state##.schema##.marks "link" in
match (matched_text, mark) with
| Some url, Some mark_type ->
let attrs = PM.O.init [| ("href", url) |] in
(* Create the mark containing the URL *)
let m = state##.schema##mark_fromType mark_type (Js.some attrs) in
(* Apply the mark as a transaction *)
let tr =
state
##. tr
## (addMark ~from ~to_ m)
## (insertText (Jstr.v " ") ~from:Js.null ~to_:Js.null)
in
Js.some tr
| _ ->
Js.null )
let input_rule pm =
let bold = toggle_mark (new%js Js.regExp (Js.string "\\*\\*$")) pm "strong"
and em = toggle_mark (new%js Js.regExp (Js.string "__$")) pm "em"
and url = into_url (new%js Js.regExp (Js.string "(\\w+://\\S+)\\s$")) pm in
PM.InputRule.to_plugin pm (Js.array [| bold; url; em |])
let default pm schema =
(* Load the history plugin *)
let _ = PM.History.(history pm (history_prop ())) in
let props = PM.Example.options schema in
props##.menuBar := Js.some Js._true ;
props##.floatingMenu := Js.some Js._true ;
props##.menuContent := (Footnotes.build_menu pm schema)##.fullMenu ;
let setup = PM.Example.example_setup pm props in
let keymaps =
PM.Keymap.keymap
pm
[| ("Backspace", handle_backspace pm); ("#", handle_sharp pm) |]
in
(* Add the custom keymaps in the list *)
let _ = setup##unshift keymaps in
let _ = setup##push (input_rule pm) in
let _ = setup##push (Tooltip.bold_plugin pm) in
let _ = setup##push (Link_editor.plugin pm) in
Js.some setup
|
