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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| // ==LICENSE-BEGIN== | ||
| // Copyright 2017 European Digital Reading Lab. All rights reserved. | ||
| // Licensed to the Readium Foundation under one or more contributor license agreements. | ||
| // Use of this source code is governed by a BSD-style license | ||
| // that can be found in the LICENSE file exposed on Github (readium) in the project repository. | ||
| // ==LICENSE-END== | ||
|
|
||
| import * as React from "react"; | ||
| import * as ReactDOM from "react-dom"; | ||
|
|
||
| import AccessibleMenu from "./AccessibleMenu"; | ||
| import { autoUpdate, computePosition, flip } from "@floating-ui/dom"; | ||
|
|
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| // eslint-disable-next-line @typescript-eslint/no-empty-interface | ||
| interface IBaseProps { | ||
| id: string; | ||
| closeMenu: () => void, | ||
| menuButtonRef: React.RefObject<HTMLButtonElement>; | ||
| } | ||
|
|
||
| // IProps may typically extend: | ||
| // RouteComponentProps | ||
| // ReturnType<typeof mapStateToProps> | ||
| // ReturnType<typeof mapDispatchToProps> | ||
| // eslint-disable-next-line @typescript-eslint/no-empty-interface | ||
| interface IProps extends IBaseProps { | ||
| } | ||
|
|
||
| interface IState { | ||
| menuStyle: React.CSSProperties; | ||
| } | ||
|
|
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| export default class MenuContent extends React.Component<IProps, IState> { | ||
| private appElement: HTMLElement; | ||
| private appOverlayElement: HTMLElement; | ||
| private rootElement: HTMLElement; | ||
| private accessibleMenuContentRef: React.RefObject<HTMLDivElement>; | ||
| private cleanupFloatingUITracker: () => void; | ||
|
|
||
| constructor(props: IProps) { | ||
| super(props); | ||
|
|
||
| this.state = { | ||
| menuStyle: {}, | ||
| }; | ||
| this.appElement = document.getElementById("app"); | ||
| this.appOverlayElement = document.getElementById("app-overlay"); | ||
| this.rootElement = document.createElement("div"); | ||
|
|
||
| this.accessibleMenuContentRef = React.createRef<HTMLDivElement>(); | ||
| this.loadContentStyles = this.loadContentStyles.bind(this); | ||
| this.cleanupFloatingUITracker = () => {}; | ||
| } | ||
|
|
||
| public componentDidMount() { | ||
| this.appElement.setAttribute("aria-hidden", "true"); | ||
| this.appOverlayElement.appendChild(this.rootElement); | ||
|
|
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| setTimeout(() => this.accessibleMenuContentRef?.current?.querySelector("button")?.focus(), 1); | ||
| this.cleanupFloatingUITracker = this.loadContentStyles(); | ||
| } | ||
|
|
||
| public componentWillUnmount() { | ||
| this.appElement.setAttribute("aria-hidden", "false"); | ||
| this.appOverlayElement.removeChild(this.rootElement); | ||
|
|
||
| this.cleanupFloatingUITracker(); | ||
| } | ||
|
|
||
| public render() { | ||
|
|
||
| console.log("RENDER"); | ||
| return ReactDOM.createPortal( | ||
| ( | ||
| <AccessibleMenu | ||
| doBackFocusMenuButton={() => this.props.menuButtonRef.current?.focus()} | ||
| visible={true} | ||
| toggleMenu={this.props.closeMenu} | ||
| > | ||
| <div | ||
| style={this.state.menuStyle} | ||
| id={this.props.id} | ||
| aria-hidden={false} | ||
| role="menu" | ||
| aria-expanded={true} | ||
| ref={this.accessibleMenuContentRef} | ||
| > | ||
| {this.props.children} | ||
| </div> | ||
| </AccessibleMenu> | ||
| ), | ||
| this.rootElement, | ||
| ); | ||
| } | ||
|
|
||
| private loadContentStyles() { | ||
|
|
||
| const cleanup = autoUpdate( | ||
| this.props.menuButtonRef.current, | ||
| this.accessibleMenuContentRef.current, | ||
| () => computePosition(this.props.menuButtonRef.current, this.accessibleMenuContentRef.current, { | ||
| placement: "bottom", | ||
| middleware: [flip()], | ||
| }) | ||
| .then(({ x, y }) => { | ||
| this.setState({ | ||
| menuStyle: { | ||
| position: "absolute", | ||
| left: `${x}px`, | ||
| top: `${y}px`, | ||
| }, | ||
| }); | ||
| }) | ||
| .catch((e) => { | ||
| // nothing | ||
| console.error("floatingUI err", e); | ||
| }), | ||
| ); | ||
| return cleanup; | ||
| } | ||
| } |