botframework-webchat-component/lib/hooks/internal/useRegisterFocusSendBox.js

React component of botframework-webchat

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = useRegisterFocusSendBox;

var _react = require("react");

var _removeInline = _interopRequireDefault(require("../../Utils/removeInline"));

var _useWebChatUIContext2 = _interopRequireDefault(require("./useWebChatUIContext"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

// This hook is for registering and unregister a callback, used by <BasicSendBox>.
// When called, the callback should focus on the text box of the send box.
function useRegisterFocusSendBox(callback) {
  var _useWebChatUIContext = (0, _useWebChatUIContext2.default)(),
      focusSendBoxCallbacksRef = _useWebChatUIContext.focusSendBoxCallbacksRef;

  (0, _react.useEffect)(function () {
    if (callback) {
      var focusSendBoxCallbacks = focusSendBoxCallbacksRef.current;
      focusSendBoxCallbacks.push(callback);
      return function () {
        return (0, _removeInline.default)(focusSendBoxCallbacks, callback);
      };
    }
  }, [callback, focusSendBoxCallbacksRef]);
}
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