@atlaskit/editor-common
Version:
A package that contains common classes and components for editor and renderer
178 lines (176 loc) • 7.72 kB
JavaScript
import _extends from "@babel/runtime/helpers/extends";
import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
import _createClass from "@babel/runtime/helpers/createClass";
import _possibleConstructorReturn from "@babel/runtime/helpers/possibleConstructorReturn";
import _getPrototypeOf from "@babel/runtime/helpers/getPrototypeOf";
import _inherits from "@babel/runtime/helpers/inherits";
import _defineProperty from "@babel/runtime/helpers/defineProperty";
function _callSuper(t, o, e) { return o = _getPrototypeOf(o), _possibleConstructorReturn(t, _isNativeReflectConstruct() ? Reflect.construct(o, e || [], _getPrototypeOf(t).constructor) : o.apply(t, e)); }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
import React from 'react';
import { ShadowObserver, shadowObserverClassNames } from './shadowObserver';
export var shadowClassNames = {
RIGHT_SHADOW: 'right-shadow',
LEFT_SHADOW: 'left-shadow'
};
export default function overflowShadow(Component, options) {
return /*#__PURE__*/function (_React$Component) {
function OverflowShadow() {
var _this;
_classCallCheck(this, OverflowShadow);
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
_this = _callSuper(this, OverflowShadow, [].concat(args));
_defineProperty(_this, "overflowContainerWidth", 0);
_defineProperty(_this, "state", {
showLeftShadow: false,
showRightShadow: false
});
_defineProperty(_this, "handleScroll", function (event) {
if (!_this.overflowContainer || event.target !== _this.overflowContainer || options.useShadowObserver) {
return;
}
_this.updateShadows();
});
_defineProperty(_this, "updateShadows", function () {
if (options.useShadowObserver) {
return;
}
_this.setState(function (prevState) {
if (!_this.overflowContainer) {
return;
}
var diff = _this.calcOverflowDiff();
var showRightShadow = diff > 0 && diff > _this.overflowContainer.scrollLeft;
var showLeftShadow = _this.showLeftShadow(_this.overflowContainer);
if (showLeftShadow !== prevState.showLeftShadow || showRightShadow !== _this.state.showRightShadow) {
return {
showLeftShadow: showLeftShadow,
showRightShadow: showRightShadow
};
}
return null;
});
});
_defineProperty(_this, "showLeftShadow", function (overflowContainer) {
return !!overflowContainer && overflowContainer.scrollLeft > 0;
});
_defineProperty(_this, "calcOverflowDiff", function () {
if (!_this.overflowContainer) {
return 0;
}
_this.diff = _this.calcScrollableWidth();
return _this.diff - _this.overflowContainer.offsetWidth;
});
_defineProperty(_this, "calcScrollableWidth", function () {
if (!_this.scrollable && _this.overflowContainer) {
return _this.overflowContainer.scrollWidth;
}
if (!_this.scrollable) {
return 0;
}
var width = 0;
for (var i = 0; i < _this.scrollable.length; i++) {
var scrollableElement = _this.scrollable[i];
if (isElementNode(scrollableElement)) {
width += scrollableElement.scrollWidth;
}
}
return width;
});
_defineProperty(_this, "handleContainer", function (container) {
if (!container || _this.container) {
return;
}
_this.container = container;
_this.overflowContainer = container.querySelector(options.overflowSelector);
if (!_this.overflowContainer) {
_this.overflowContainer = container;
}
if (options.useShadowObserver) {
_this.initShadowObserver();
return;
}
_this.updateShadows();
// Ignored via go/ees005
// eslint-disable-next-line @repo/internal/dom-events/no-unsafe-event-listeners
_this.overflowContainer.addEventListener('scroll', _this.handleScroll);
});
return _this;
}
_inherits(OverflowShadow, _React$Component);
return _createClass(OverflowShadow, [{
key: "componentWillUnmount",
value: function componentWillUnmount() {
if (options.useShadowObserver) {
return this.shadowObserver && this.shadowObserver.dispose();
}
if (this.overflowContainer) {
// Ignored via go/ees005
// eslint-disable-next-line @repo/internal/dom-events/no-unsafe-event-listeners
this.overflowContainer.removeEventListener('scroll', this.handleScroll);
}
this.updateShadows();
}
}, {
key: "componentDidUpdate",
value: function componentDidUpdate() {
if (!options.useShadowObserver) {
this.updateShadows();
}
}
}, {
key: "initShadowObserver",
value: function initShadowObserver() {
var _this2 = this;
if (this.shadowObserver || !this.overflowContainer) {
return;
}
this.shadowObserver = new ShadowObserver({
scrollContainer: this.overflowContainer,
onUpdateShadows: function onUpdateShadows(shadowStates) {
_this2.setState(function (prevState) {
var showLeftShadow = shadowStates.showLeftShadow,
showRightShadow = shadowStates.showRightShadow;
if (showLeftShadow !== prevState.showLeftShadow || showRightShadow !== prevState.showRightShadow) {
return {
showLeftShadow: showLeftShadow,
showRightShadow: showRightShadow
};
}
return null;
});
}
});
}
}, {
key: "render",
value: function render() {
var _this$props, _this$props2;
var _this$state = this.state,
showLeftShadow = _this$state.showLeftShadow,
showRightShadow = _this$state.showRightShadow;
var classNames = [!((_this$props = this.props) !== null && _this$props !== void 0 && _this$props.disableTableOverflowShadow) && showRightShadow && shadowClassNames.RIGHT_SHADOW, !((_this$props2 = this.props) !== null && _this$props2 !== void 0 && _this$props2.disableTableOverflowShadow) && showLeftShadow && shadowClassNames.LEFT_SHADOW, options.useShadowObserver && shadowObserverClassNames.SHADOW_CONTAINER].filter(Boolean).join(' ');
/**
* The widths have already been calculated to determine
* showRightShadow and showLeftShadow. If either is true,
* then the content is scrollable and we need to set the
* tabIndex to 0 to allow the user to scroll the content
* for a11y purposes.
*/
var hasOverflowScroll = showRightShadow || showLeftShadow;
return /*#__PURE__*/React.createElement(Component, _extends({
handleRef: this.handleContainer,
tabIndex: hasOverflowScroll ? 0 : undefined,
shadowClassNames: classNames
// eslint-disable-next-line react/jsx-props-no-spreading -- Spreading props to pass all component props through to wrapped generic component
}, this.props));
}
}]);
}(React.Component);
}
// Helper function to check if the passed node is of Element class
function isElementNode(node) {
return node.nodeType === 1;
}