package bonsai

  1. Overview
  2. Docs
package bonsai
Legend:
Page
Library
Module
Module type
Parameter
Class
Class type
Source

Source file vdom_based_tests.ml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
open! Core
open Bonsai.Let_syntax
open Virtual_dom
open Proc

(* This test basically just exists because it's really hard to dispatch
   events deep into a tree without an intermediate representation.  Turns
   out that Vdom.Node.t is a pretty good intermediate representation. *)
let%expect_test "recursive component" =
  let module M = struct
    type t =
      { label : string
      ; children : t Int.Map.t
      }
    [@@deriving fields]
  end
  in
  let rec tree input path =
    let%sub { M.label; children } = return input in
    let%sub children =
      Bonsai.assoc
        (module Int)
        children
        ~f:(fun index child ->
          let path = Bonsai.Value.map2 index path ~f:List.cons in
          let%sub child = Bonsai.lazy_ (lazy (tree child path)) in
          let%arr child = child
          and index = index in
          Vdom.Node.div [ Vdom.Node.textf "%d" index; child ])
    in
    let%sub state = Bonsai.state (module Int) ~default_model:0 in
    let%arr children = children
    and label = label
    and path = path
    and state, set_state = state in
    let path_text =
      String.concat ~sep:"_" ("path" :: List.rev_map path ~f:Int.to_string)
    in
    Vdom.Node.div
      ~attrs:[ Vdom.Attr.id path_text ]
      (Vdom.Node.textf "%s %d" label state
       :: Vdom.Node.button
            ~attrs:[ Vdom.Attr.on_click (fun _ -> set_state (state + 1)) ]
            [ Vdom.Node.text "+1" ]
       :: Map.data (children : _ Int.Map.t))
  in
  let var =
    Bonsai.Var.create
      { M.label = "hi"
      ; children =
          Int.Map.of_alist_exn
            [ ( 0
              , { M.label = "hello"
                ; children =
                    Int.Map.of_alist_exn
                      [ 99, { M.label = "another"; children = Int.Map.empty } ]
                } )
            ; 1, { M.label = "test"; children = Int.Map.empty }
            ; 2, { M.label = "foobar"; children = Int.Map.empty }
            ]
      }
  in
  let value = Bonsai.Var.value var in
  let handle =
    Handle.create (Result_spec.vdom Fn.id) (tree value (Bonsai.Value.return [ 0 ]))
  in
  Handle.show handle;
  let before = [%expect.output] in
  Handle.click_on handle ~get_vdom:Fn.id ~selector:"#path_0_0_99 button";
  Handle.show handle;
  let after = [%expect.output] in
  Expect_test_patdiff.print_patdiff before after;
  [%expect
    {|
    -1,28 +1,28
      <div id="path_0">
        hi 0
        <button onclick> +1 </button>
        <div>
          0
          <div id="path_0_0">
            hello 0
            <button onclick> +1 </button>
            <div>
              99
              <div id="path_0_0_99">
    -|          another 0
    +|          another 1
                <button onclick> +1 </button>
              </div>
            </div>
          </div>
        </div>
        <div>
          1
          <div id="path_0_1">
            test 0
            <button onclick> +1 </button>
          </div>
        </div>
        <div>
          2
          <div id="path_0_2">
            foobar 0 |}];
  (* test sending an action to an inactive component *)
  (* capture the result so that we can schedule actions from it. *)
  let old_input = Bonsai.Var.get var in
  let old_result = Handle.result handle in
  Bonsai.Var.set var { M.label = "hi"; children = Int.Map.empty };
  Handle.show handle;
  [%expect
    {|
    <div id="path_0">
      hi 0
      <button onclick> +1 </button>
    </div> |}];
  Handle.click_on handle ~get_vdom:(fun _ -> old_result) ~selector:"#path_0_0_99 button";
  Bonsai.Var.set var old_input;
  Handle.show handle;
  [%expect
    {|
    <div id="path_0">
      hi 0
      <button onclick> +1 </button>
      <div>
        0
        <div id="path_0_0">
          hello 0
          <button onclick> +1 </button>
          <div>
            99
            <div id="path_0_0_99">
              another 2
              <button onclick> +1 </button>
            </div>
          </div>
        </div>
      </div>
      <div>
        1
        <div id="path_0_1">
          test 0
          <button onclick> +1 </button>
        </div>
      </div>
      <div>
        2
        <div id="path_0_2">
          foobar 0
          <button onclick> +1 </button>
        </div>
      </div>
    </div> |}]
;;
OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct