Set mark with Ctrl+Space key on Mac

set-mark-with-ctrl-space-mac.ks.js

(function () {
    const KeyCodes = {
        Space : 32,
        Ctrl  : 17
    };

    let ctrlOn = true;

    function keyDownHandler(ev) {
        switch (ev.keyCode) {
        case KeyCodes.Ctrl:
            ctrlOn = true;
            break;
        case KeyCodes.Space:
            if (ctrlOn) {
                let elem = ev.originalTarget;

                command.setMark(ev);

                function cancelContextMenu(event) {
                    event.preventDefault();
                    elem.removeEventListener("contextmenu", cancelContextMenu, true);
                }

                elem.addEventListener("contextmenu", cancelContextMenu, true);
            }
            break;
        }
    }

    function keyUpHandler(ev) {
        if (ev.keyCode === KeyCodes.Ctrl)
            ctrlOn = false;
    }

    function destructor() {
        window.removeEventListener("keydown", keyDownHandler, true);
        window.removeEventListener("keyup", keyUpHandler, true);
    }

    window.addEventListener("keydown", keyDownHandler, true);
    window.addEventListener("keyup", keyUpHandler, true);
})();