1 files changed, 40 insertions, 0 deletions
diff --git a/src/Lib/ContextMenu.ml b/src/Lib/ContextMenu.ml
new file mode 100644
index 0000000..b9ed7d4
--- /dev/null
+++ b/src/Lib/ContextMenu.ml
@@ -0,0 +1,40 @@
+let px f =
+  Js.Float.toString f ^ "px"
+
+type entry =
+  { label: string
+  ; action: unit -> unit
+  }
+
+let show mouse_event actions =
+  let menu =
+    H.div
+      [| HA.id "g-ContextMenu"
+      ;  HA.style ("left: " ^ (px (Event.page_x mouse_event)) ^ "; top: " ^ (px (Event.page_y mouse_event)))
+      |]
+      (Js.Array.map
+        (fun entry ->
+          H.div
+            [| HA.class_ "g-ContextMenu__Entry"
+            ;  HE.on_click (fun _ -> entry.action ())
+            |]
+            [| H.text entry.label |])
+        actions)
+  in
+  let () = Element.append_child Document.body menu in
+
+  (* Remove on click or context menu *)
+  let _ =
+    Js.Global.setTimeout
+      (fun _ ->
+        let rec f = (fun _ ->
+          let () = Element.remove_child Document.body menu in
+          let () = Element.remove_event_listener Document.body "click" f in
+          Element.remove_event_listener Document.body "contextmenu" f)
+        in
+        let () = Element.add_event_listener Document.body "click" f in
+        Element.add_event_listener Document.body "contextmenu" f
+      )
+      0
+  in
+  ()