addon-screen-reader
Version:
A Screen Reader Storybook addon
273 lines (216 loc) • 12.8 kB
JavaScript
;
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _react = _interopRequireWildcard(require("react"));
var _reactToggleComponent = require("react-toggle-component");
var _styledComponents = _interopRequireDefault(require("styled-components"));
var _screenReader = _interopRequireDefault(require("../screen-reader/screenReader"));
var _templateObject, _templateObject2;
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
function _taggedTemplateLiteral(strings, raw) { if (!raw) { raw = strings.slice(0); } return Object.freeze(Object.defineProperties(strings, { raw: { value: Object.freeze(raw) } })); }
var Label = _styledComponents["default"].label(_templateObject || (_templateObject = _taggedTemplateLiteral(["\n display: grid;\n grid-auto-flow: column;\n grid-auto-columns: min-content;\n white-space: nowrap;\n align-items: center;\n cursor: pointer;\n margin: 16px 8px;\n font-size: 18px;\n"])));
var TextContent = _styledComponents["default"].p(_templateObject2 || (_templateObject2 = _taggedTemplateLiteral(["\n font-size: 18px;\n border-radius: 10px;\n border: 2px solid blue;\n padding: 10px;\n margin: 16px 8px;\n background: lightgrey;\n"])));
var AddonLayout = /*#__PURE__*/function (_Component) {
_inherits(AddonLayout, _Component);
var _super = _createSuper(AddonLayout);
function AddonLayout(props) {
var _this;
_classCallCheck(this, AddonLayout);
_this = _super.call(this, props);
_this.state = {
screenReaderText: '',
voice: false,
text: false,
screenReaderStatus: false
};
_this.handleTextToggleChange = _this.handleTextToggleChange.bind(_assertThisInitialized(_this));
_this.handleVoiceToggleChange = _this.handleVoiceToggleChange.bind(_assertThisInitialized(_this));
return _this;
}
_createClass(AddonLayout, [{
key: "componentDidMount",
value: function componentDidMount() {
window.addEventListener('screen-reader-text-changed', this.handleTextChange.bind(this));
this.storybookIframe = document.getElementById('storybook-preview-iframe');
}
}, {
key: "componentWillUnmount",
value: function componentWillUnmount() {
window.removeEventListener('screen-reader-text-changed', this.handleTextChange);
}
}, {
key: "handleTextChange",
value: function handleTextChange(evt) {
var text = evt.detail.text;
this.setState({
screenReaderText: text
});
}
}, {
key: "handleVoiceToggleChange",
value: function () {
var _handleVoiceToggleChange = _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee(ev) {
return regeneratorRuntime.wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
_context.next = 2;
return this.setState({
voice: ev.currentTarget.checked
});
case 2:
this.updateReaderStatus();
case 3:
case "end":
return _context.stop();
}
}
}, _callee, this);
}));
function handleVoiceToggleChange(_x) {
return _handleVoiceToggleChange.apply(this, arguments);
}
return handleVoiceToggleChange;
}()
}, {
key: "handleTextToggleChange",
value: function () {
var _handleTextToggleChange = _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee2(ev) {
return regeneratorRuntime.wrap(function _callee2$(_context2) {
while (1) {
switch (_context2.prev = _context2.next) {
case 0:
_context2.next = 2;
return this.setState({
text: ev.currentTarget.checked
});
case 2:
this.updateReaderStatus();
case 3:
case "end":
return _context2.stop();
}
}
}, _callee2, this);
}));
function handleTextToggleChange(_x2) {
return _handleTextToggleChange.apply(this, arguments);
}
return handleTextToggleChange;
}()
}, {
key: "updateReaderOutput",
value: function () {
var _updateReaderOutput = _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee3() {
var _this$state, voice, text;
return regeneratorRuntime.wrap(function _callee3$(_context3) {
while (1) {
switch (_context3.prev = _context3.next) {
case 0:
_this$state = this.state, voice = _this$state.voice, text = _this$state.text;
this.screenReader.voiceEnabled = voice;
this.screenReader.textEnabled = text;
case 3:
case "end":
return _context3.stop();
}
}
}, _callee3, this);
}));
function updateReaderOutput() {
return _updateReaderOutput.apply(this, arguments);
}
return updateReaderOutput;
}()
}, {
key: "updateReaderStatus",
value: function () {
var _updateReaderStatus = _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee4() {
var _this$state2, voice, text, screenReaderStatus;
return regeneratorRuntime.wrap(function _callee4$(_context4) {
while (1) {
switch (_context4.prev = _context4.next) {
case 0:
// Start reader from screenReaderStatus off
_this$state2 = this.state, voice = _this$state2.voice, text = _this$state2.text, screenReaderStatus = _this$state2.screenReaderStatus;
if (!(!screenReaderStatus && (voice || text))) {
_context4.next = 9;
break;
}
_context4.next = 4;
return this.setState({
screenReaderStatus: true
});
case 4:
this.screenReader = new _screenReader["default"]();
this.updateReaderOutput();
this.screenReader.start();
_context4.next = 17;
break;
case 9:
if (!( // Stop reader
screenReaderStatus && !voice && !text)) {
_context4.next = 16;
break;
}
_context4.next = 12;
return this.setState({
screenReaderStatus: false
});
case 12:
this.screenReader = null; // As we mutate the of the story, the safest way to stop is to rerender everything again;
this.storybookIframe.contentWindow.location.reload();
_context4.next = 17;
break;
case 16:
this.updateReaderOutput();
case 17:
case "end":
return _context4.stop();
}
}
}, _callee4, this);
}));
function updateReaderStatus() {
return _updateReaderStatus.apply(this, arguments);
}
return updateReaderStatus;
}()
}, {
key: "render",
value: function render() {
return /*#__PURE__*/_react["default"].createElement(_react["default"].Fragment, null, /*#__PURE__*/_react["default"].createElement(Label, {
htmlFor: "toggle-voice"
}, /*#__PURE__*/_react["default"].createElement(_reactToggleComponent.Toggle, {
name: "toggle-voice",
onToggle: this.handleVoiceToggleChange
}), "Voice Reader"), /*#__PURE__*/_react["default"].createElement(Label, {
htmlFor: "toggle-text"
}, /*#__PURE__*/_react["default"].createElement(_reactToggleComponent.Toggle, {
name: "toggle-text",
onToggle: this.handleTextToggleChange
}), "Text Reader"), /*#__PURE__*/_react["default"].createElement(TextContent, {
hidden: !this.state.text
}, this.state.screenReaderText));
}
}]);
return AddonLayout;
}(_react.Component);
exports["default"] = AddonLayout;