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Diffstat (limited to 'packages/react-shared/src/components/link.tsx')
-rw-r--r-- | packages/react-shared/src/components/link.tsx | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/packages/react-shared/src/components/link.tsx b/packages/react-shared/src/components/link.tsx new file mode 100644 index 000000000..5a456109b --- /dev/null +++ b/packages/react-shared/src/components/link.tsx @@ -0,0 +1,131 @@ +import * as _ from 'lodash'; +import * as React from 'react'; +import { Link as ReactRounterLink } from 'react-router-dom'; +import { Link as ScrollLink } from 'react-scroll'; +import * as validUrl from 'valid-url'; + +import { LinkType } from '../types'; +import { constants } from '../utils/constants'; + +interface LinkProps { + to: string; + shouldOpenInNewTab?: boolean; + className?: string; + onMouseOver?: (event: React.MouseEvent<HTMLElement>) => void; + onMouseLeave?: (event: React.MouseEvent<HTMLElement>) => void; + onMouseEnter?: (event: React.MouseEvent<HTMLElement>) => void; + textDecoration?: string; + fontColor?: string; +} + +export interface LinkState {} + +/** + * A generic link component which let's the developer render internal, external and scroll-to-hash links, and + * their associated behaviors with a single link component. Many times we want a menu including a combination of + * internal, external and scroll links and the abstraction of the differences of rendering each types of link + * makes it much easier to do so. + */ +export class Link extends React.Component<LinkProps, LinkState> { + public static defaultProps: Partial<LinkProps> = { + shouldOpenInNewTab: false, + className: '', + onMouseOver: _.noop.bind(_), + onMouseLeave: _.noop.bind(_), + onMouseEnter: _.noop.bind(_), + textDecoration: 'none', + fontColor: 'inherit', + }; + private _outerReactScrollSpan: HTMLSpanElement | null; + constructor(props: LinkProps) { + super(props); + this._outerReactScrollSpan = null; + } + public render(): React.ReactNode { + let type: LinkType; + const isReactRoute = _.startsWith(this.props.to, '/'); + const isExternal = validUrl.isWebUri(this.props.to) || _.startsWith(this.props.to, 'mailto:'); + if (isReactRoute) { + type = LinkType.ReactRoute; + } else if (isExternal) { + type = LinkType.External; + } else { + type = LinkType.ReactScroll; + } + + if (type === LinkType.ReactScroll && this.props.shouldOpenInNewTab) { + throw new Error(`Cannot open LinkType.ReactScroll links in new tab. link.to: ${this.props.to}`); + } + + const styleWithDefault = { + textDecoration: this.props.textDecoration, + cursor: 'pointer', + color: this.props.fontColor, + }; + + switch (type) { + case LinkType.External: + return ( + <a + target={this.props.shouldOpenInNewTab ? '_blank' : ''} + className={this.props.className} + style={styleWithDefault} + href={this.props.to} + onMouseOver={this.props.onMouseOver} + onMouseEnter={this.props.onMouseEnter} + onMouseLeave={this.props.onMouseLeave} + > + {this.props.children} + </a> + ); + case LinkType.ReactRoute: + return ( + <ReactRounterLink + to={this.props.to} + className={this.props.className} + style={styleWithDefault} + target={this.props.shouldOpenInNewTab ? '_blank' : ''} + onMouseOver={this.props.onMouseOver} + onMouseEnter={this.props.onMouseEnter} + onMouseLeave={this.props.onMouseLeave} + > + {this.props.children} + </ReactRounterLink> + ); + case LinkType.ReactScroll: + return ( + <span + ref={input => (this._outerReactScrollSpan = input)} + onMouseOver={this.props.onMouseOver} + onMouseEnter={this.props.onMouseEnter} + onMouseLeave={this.props.onMouseLeave} + > + <ScrollLink + to={this.props.to} + offset={0} + hashSpy={true} + duration={constants.DOCS_SCROLL_DURATION_MS} + containerId={constants.SCROLL_CONTAINER_ID} + className={this.props.className} + style={styleWithDefault} + > + <span onClick={this._onClickPropagateClickEventAroundScrollLink.bind(this)}> + {this.props.children} + </span> + </ScrollLink> + </span> + ); + default: + throw new Error(`Unrecognized LinkType: ${type}`); + } + } + // HACK(fabio): For some reason, the react-scroll link decided to stop the propagation of click events. + // We do however rely on these events being propagated in certain scenarios (e.g when the link + // is within a dropdown we want to close upon being clicked). Because of this, we register the + // click event of an inner span, and pass it around the react-scroll link to an outer span. + private _onClickPropagateClickEventAroundScrollLink(): void { + if (!_.isNull(this._outerReactScrollSpan)) { + this._outerReactScrollSpan.click(); + } + } +} |