@enact/ui
Version:
A collection of simplified unstyled cross-platform UI components for Enact
145 lines (143 loc) • 7.75 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = exports.PlaceholderDecorator = void 0;
var _hoc = _interopRequireDefault(require("@enact/core/hoc"));
var _react = require("react");
var _PlaceholderControllerDecorator = require("./PlaceholderControllerDecorator");
var _jsxRuntime = require("react/jsx-runtime");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == typeof i ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != typeof t || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != typeof i) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function _callSuper(t, o, e) { return o = _getPrototypeOf(o), _possibleConstructorReturn(t, _isNativeReflectConstruct() ? Reflect.construct(o, e || [], _getPrototypeOf(t).constructor) : o.apply(t, e)); }
function _possibleConstructorReturn(t, e) { if (e && ("object" == typeof e || "function" == typeof e)) return e; if (void 0 !== e) throw new TypeError("Derived constructors may only return object or undefined"); return _assertThisInitialized(t); }
function _assertThisInitialized(e) { if (void 0 === e) throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); return e; }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
function _getPrototypeOf(t) { return _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function (t) { return t.__proto__ || Object.getPrototypeOf(t); }, _getPrototypeOf(t); }
function _inherits(t, e) { if ("function" != typeof e && null !== e) throw new TypeError("Super expression must either be null or a function"); t.prototype = Object.create(e && e.prototype, { constructor: { value: t, writable: !0, configurable: !0 } }), Object.defineProperty(t, "prototype", { writable: !1 }), e && _setPrototypeOf(t, e); }
function _setPrototypeOf(t, e) { return _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function (t, e) { return t.__proto__ = e, t; }, _setPrototypeOf(t, e); } /**
* Default config for PlaceholderDecorator.
*
* @memberof ui/Placeholder.PlaceholderDecorator
* @hocconfig
* @public
*/
var defaultConfig = {
/**
* Configures the style of the placeholder element
*
* @type {Object}
* @default {height: 0, width: 'auto'}
* @memberof ui/Placeholder.PlaceholderDecorator.defaultConfig
*/
style: {
height: 0,
width: 'auto'
},
/**
* The component to use as a placeholder.
*
* @type {String}
* @default 'div'
* @memberof ui/Placeholder.PlaceholderDecorator.defaultConfig
*/
placeholderComponent: 'div'
};
/**
* A higher-order component that enables a container to notify the wrapped component when scrolling.
*
* Containers must provide `registerPlaceholder`, `unregisterPlaceholder`, and `invalidateBounds`
* methods via React's context for `PlaceholderDecorator` instances.
*
* No additional properties are passed to the wrapped component.
*
* @class PlaceholderDecorator
* @memberof ui/Placeholder
* @hoc
* @public
*/
var PlaceholderDecorator = exports.PlaceholderDecorator = (0, _hoc["default"])(defaultConfig, function (config, Wrapped) {
var _Class;
var PlaceholderComponent = config.placeholderComponent,
style = config.style;
var placeholderStyle = Object.assign({}, defaultConfig.style, style);
return _Class = /*#__PURE__*/function (_PureComponent) {
function _Class() {
var _this;
_classCallCheck(this, _Class);
_this = _callSuper(this, _Class);
_this.initPlaceholderRef = function (ref) {
_this.placeholderRef = ref;
};
_this.state = {
visible: false
};
return _this;
}
_inherits(_Class, _PureComponent);
return _createClass(_Class, [{
key: "componentDidMount",
value: function componentDidMount() {
if (!this.state.visible && this.context) {
this.controller = this.context(this.update.bind(this));
}
}
}, {
key: "componentDidUpdate",
value: function componentDidUpdate(prevProps, prevState) {
if (this.controller && this.state.visible && prevState.visible !== this.state.visible) {
// also need invalidateBounds() for scroller :(
this.controller.unregister();
}
}
}, {
key: "componentWillUnmount",
value: function componentWillUnmount() {
if (this.controller && !this.state.visible) {
this.controller.unregister();
}
}
}, {
key: "update",
value: function update(_ref) {
var leftThreshold = _ref.leftThreshold,
topThreshold = _ref.topThreshold;
var _this$placeholderRef = this.placeholderRef,
offsetLeft = _this$placeholderRef.offsetLeft,
offsetTop = _this$placeholderRef.offsetTop,
offsetHeight = _this$placeholderRef.offsetHeight,
offsetWidth = _this$placeholderRef.offsetWidth;
if (offsetTop < topThreshold + offsetHeight && offsetLeft < leftThreshold + offsetWidth) {
this.setState(function (state) {
return state.visible ? null : {
visible: true
};
});
}
}
}, {
key: "render",
value: function render() {
var visible = this.state.visible;
if (visible) {
return /*#__PURE__*/(0, _jsxRuntime.jsx)(Wrapped, _objectSpread(_objectSpread({}, this.props), {}, {
ref: this.initPlaceholderRef
}));
} else {
return /*#__PURE__*/(0, _jsxRuntime.jsx)(PlaceholderComponent, {
ref: this.initPlaceholderRef,
style: placeholderStyle
});
}
}
}]);
}(_react.PureComponent), _Class.displayName = 'PlaceholderDecorator', _Class.contextType = _PlaceholderControllerDecorator.PlaceholderContext, _Class;
});
var _default = exports["default"] = PlaceholderDecorator;