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authorFabio Berger <me@fabioberger.com>2018-03-13 22:29:12 +0800
committerFabio Berger <me@fabioberger.com>2018-03-13 22:29:12 +0800
commitca25b816fabe15ce1ebc539c0316beba813683b8 (patch)
tree0e28bbc819cfccda1789192628c365ea54328103 /packages/react-shared/src/components/anchor_title.tsx
parentdf1968157c13a7bbe2e512cbc924190a414e6738 (diff)
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-rw-r--r--packages/react-shared/src/components/anchor_title.tsx87
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diff --git a/packages/react-shared/src/components/anchor_title.tsx b/packages/react-shared/src/components/anchor_title.tsx
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+import * as React from 'react';
+import { Link as ScrollLink } from 'react-scroll';
+
+import { HeaderSizes, Styles } from '../types';
+import { constants } from '../utils/constants';
+import { utils } from '../utils/utils';
+
+const headerSizeToScrollOffset: { [headerSize: string]: number } = {
+ h2: -20,
+ h3: 0,
+};
+
+export interface AnchorTitleProps {
+ title: string | React.ReactNode;
+ id: string;
+ headerSize: HeaderSizes;
+ shouldShowAnchor: boolean;
+}
+
+export interface AnchorTitleState {
+ isHovering: boolean;
+}
+
+const styles: Styles = {
+ anchor: {
+ fontSize: 20,
+ transform: 'rotate(45deg)',
+ cursor: 'pointer',
+ },
+ headers: {
+ WebkitMarginStart: 0,
+ WebkitMarginEnd: 0,
+ fontWeight: 'bold',
+ display: 'block',
+ },
+ h1: {
+ fontSize: '1.8em',
+ },
+ h2: {
+ fontSize: '1.5em',
+ fontWeight: 400,
+ },
+ h3: {
+ fontSize: '1.17em',
+ },
+};
+
+export class AnchorTitle extends React.Component<AnchorTitleProps, AnchorTitleState> {
+ constructor(props: AnchorTitleProps) {
+ super(props);
+ this.state = {
+ isHovering: false,
+ };
+ }
+ public render() {
+ let opacity = 0;
+ if (this.props.shouldShowAnchor) {
+ opacity = this.state.isHovering ? 0.6 : 1;
+ }
+ return (
+ <div className="relative flex" style={{ ...styles[this.props.headerSize], ...styles.headers }}>
+ <div className="inline-block" style={{ paddingRight: 4 }}>
+ {this.props.title}
+ </div>
+ <ScrollLink
+ to={this.props.id}
+ offset={headerSizeToScrollOffset[this.props.headerSize]}
+ duration={constants.DOCS_SCROLL_DURATION_MS}
+ containerId={constants.DOCS_CONTAINER_ID}
+ >
+ <i
+ className="zmdi zmdi-link"
+ onClick={utils.setUrlHash.bind(utils, this.props.id)}
+ style={{ ...styles.anchor, opacity }}
+ onMouseOver={this._setHoverState.bind(this, true)}
+ onMouseOut={this._setHoverState.bind(this, false)}
+ />
+ </ScrollLink>
+ </div>
+ );
+ }
+ private _setHoverState(isHovering: boolean) {
+ this.setState({
+ isHovering,
+ });
+ }
+}