@atlaskit/editor-common
Version:
A package that contains common classes and components for editor and renderer
158 lines • 6.99 kB
JavaScript
import _extends from "@babel/runtime/helpers/extends";
import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
import _createClass from "@babel/runtime/helpers/createClass";
import _assertThisInitialized from "@babel/runtime/helpers/assertThisInitialized";
import _inherits from "@babel/runtime/helpers/inherits";
import _possibleConstructorReturn from "@babel/runtime/helpers/possibleConstructorReturn";
import _getPrototypeOf from "@babel/runtime/helpers/getPrototypeOf";
import _defineProperty from "@babel/runtime/helpers/defineProperty";
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 _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$Component) {
_inherits(OverflowShadow, _React$Component);
var _super = _createSuper(OverflowShadow);
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 = _super.call.apply(_super, [this].concat(args));
_defineProperty(_assertThisInitialized(_this), "overflowContainerWidth", 0);
_defineProperty(_assertThisInitialized(_this), "state", {
showLeftShadow: false,
showRightShadow: false
});
_defineProperty(_assertThisInitialized(_this), "handleScroll", function (event) {
if (!_this.overflowContainer || event.target !== _this.overflowContainer || options.useShadowObserver) {
return;
}
_this.updateShadows();
});
_defineProperty(_assertThisInitialized(_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(_assertThisInitialized(_this), "showLeftShadow", function (overflowContainer) {
return !!overflowContainer && overflowContainer.scrollLeft > 0;
});
_defineProperty(_assertThisInitialized(_this), "calcOverflowDiff", function () {
if (!_this.overflowContainer) {
return 0;
}
_this.diff = _this.calcScrollableWidth();
return _this.diff - _this.overflowContainer.offsetWidth;
});
_defineProperty(_assertThisInitialized(_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];
width += scrollableElement.scrollWidth;
}
return width;
});
_defineProperty(_assertThisInitialized(_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();
_this.overflowContainer.addEventListener('scroll', _this.handleScroll);
});
return _this;
}
_createClass(OverflowShadow, [{
key: "componentWillUnmount",
value: function componentWillUnmount() {
if (options.useShadowObserver) {
return this.shadowObserver && this.shadowObserver.dispose();
}
if (this.overflowContainer) {
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$state = this.state,
showLeftShadow = _this$state.showLeftShadow,
showRightShadow = _this$state.showRightShadow;
var classNames = [showRightShadow && shadowClassNames.RIGHT_SHADOW, showLeftShadow && shadowClassNames.LEFT_SHADOW, options.useShadowObserver && shadowObserverClassNames.SHADOW_CONTAINER].filter(Boolean).join(' ');
return /*#__PURE__*/React.createElement(Component, _extends({
handleRef: this.handleContainer,
shadowClassNames: classNames
}, this.props));
}
}]);
return OverflowShadow;
}(React.Component);
}