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|
/*
* SonarQube
* Copyright (C) 2009-2023 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
import { keyframes, ThemeContext } from '@emotion/react';
import styled from '@emotion/styled';
import classNames from 'classnames';
import { throttle, uniqueId } from 'lodash';
import React from 'react';
import { createPortal, findDOMNode } from 'react-dom';
import tw from 'twin.macro';
import { THROTTLE_SCROLL_DELAY } from '../helpers/constants';
import {
BasePlacement,
PLACEMENT_FLIP_MAP,
PopupPlacement,
popupPositioning,
} from '../helpers/positioning';
import { themeColor, themeContrast } from '../helpers/theme';
const MILLISECONDS_IN_A_SECOND = 1000;
export interface TooltipProps {
children: React.ReactElement;
mouseEnterDelay?: number;
mouseLeaveDelay?: number;
onHide?: VoidFunction;
onShow?: VoidFunction;
overlay: React.ReactNode;
placement?: BasePlacement;
visible?: boolean;
}
interface Measurements {
height: number;
left: number;
leftFix: number;
top: number;
topFix: number;
width: number;
}
interface OwnState {
flipped: boolean;
placement?: PopupPlacement;
visible: boolean;
}
type State = OwnState & Partial<Measurements>;
function isMeasured(state: State): state is OwnState & Measurements {
return state.height !== undefined;
}
export function Tooltip(props: TooltipProps) {
// overlay is a ReactNode, so it can be a boolean, `undefined` or `null`
// this allows to easily render a tooltip conditionally
// more generaly we avoid rendering empty tooltips
return props.overlay ? <TooltipInner {...props}>{props.children}</TooltipInner> : props.children;
}
export class TooltipInner extends React.Component<TooltipProps, State> {
throttledPositionTooltip: VoidFunction;
mouseEnterTimeout?: number;
mouseLeaveTimeout?: number;
tooltipNode?: HTMLElement | null;
mounted = false;
mouseIn = false;
id: string;
static defaultProps = {
mouseEnterDelay: 0.1,
};
constructor(props: TooltipProps) {
super(props);
this.state = {
flipped: false,
placement: props.placement,
visible: props.visible !== undefined ? props.visible : false,
};
this.id = uniqueId('tooltip-');
this.throttledPositionTooltip = throttle(this.positionTooltip, THROTTLE_SCROLL_DELAY);
}
componentDidMount() {
this.mounted = true;
if (this.props.visible === true) {
this.positionTooltip();
this.addEventListeners();
}
}
componentDidUpdate(prevProps: TooltipProps, prevState: State) {
if (this.props.placement !== prevProps.placement) {
this.setState({ placement: this.props.placement }, () => {
this.onUpdatePlacement(this.hasVisibleChanged(prevState.visible, prevProps.visible));
});
} else if (this.hasVisibleChanged(prevState.visible, prevProps.visible)) {
this.onUpdateVisible();
} else if (!this.state.flipped && this.needsFlipping(this.state)) {
this.setState(
({ placement = PopupPlacement.Bottom }) => ({
flipped: true,
placement: PLACEMENT_FLIP_MAP[placement],
}),
() => {
if (this.state.visible) {
// Force a re-positioning, as "only" updating the state doesn't
// recompute the position, only re-renders with the previous
// position (which is no longer correct).
this.positionTooltip();
}
}
);
}
}
componentWillUnmount() {
this.mounted = false;
this.removeEventListeners();
this.clearTimeouts();
}
static contextType = ThemeContext;
onUpdatePlacement = (visibleHasChanged: boolean) => {
this.setState({ placement: this.props.placement }, () => {
if (this.isVisible()) {
this.positionTooltip();
if (visibleHasChanged) {
this.addEventListeners();
}
}
});
};
onUpdateVisible = () => {
if (this.isVisible()) {
this.positionTooltip();
this.addEventListeners();
} else {
this.clearPosition();
this.removeEventListeners();
}
};
addEventListeners = () => {
window.addEventListener('resize', this.throttledPositionTooltip);
window.addEventListener('scroll', this.throttledPositionTooltip);
};
removeEventListeners = () => {
window.removeEventListener('resize', this.throttledPositionTooltip);
window.removeEventListener('scroll', this.throttledPositionTooltip);
};
clearTimeouts = () => {
window.clearTimeout(this.mouseEnterTimeout);
window.clearTimeout(this.mouseLeaveTimeout);
};
hasVisibleChanged = (prevStateVisible: boolean, prevPropsVisible?: boolean) => {
if (this.props.visible === undefined) {
return prevPropsVisible ?? this.state.visible !== prevStateVisible;
}
return this.props.visible !== prevPropsVisible;
};
isVisible = () => this.props.visible ?? this.state.visible;
getPlacement = (): PopupPlacement => this.state.placement ?? PopupPlacement.Bottom;
tooltipNodeRef = (node: HTMLElement | null) => {
this.tooltipNode = node;
};
adjustArrowPosition = (
placement: PopupPlacement,
{ leftFix, topFix, height, width }: Measurements
) => {
switch (placement) {
case PopupPlacement.Left:
case PopupPlacement.Right:
return {
marginTop: Math.max(0, Math.min(-topFix, height / 2 - ARROW_WIDTH * 2)),
};
default:
return {
marginLeft: Math.max(0, Math.min(-leftFix, width / 2 - ARROW_WIDTH * 2)),
};
}
};
positionTooltip = () => {
// `findDOMNode(this)` will search for the DOM node for the current component
// first it will find a React.Fragment (see `render`),
// so it will get the DOM node of the first child, i.e. DOM node of `this.props.children`
// docs: https://reactjs.org/docs/refs-and-the-dom.html#exposing-dom-refs-to-parent-components
// eslint-disable-next-line react/no-find-dom-node
const toggleNode = findDOMNode(this);
if (toggleNode && toggleNode instanceof Element && this.tooltipNode) {
const { height, left, leftFix, top, topFix, width } = popupPositioning(
toggleNode,
this.tooltipNode,
this.getPlacement()
);
// save width and height (and later set in `render`) to avoid resizing the popup element,
// when it's placed close to the window edge
this.setState({
left: window.scrollX + left,
leftFix,
top: window.scrollY + top,
topFix,
width,
height,
});
}
};
clearPosition = () => {
this.setState({
flipped: false,
left: undefined,
leftFix: undefined,
top: undefined,
topFix: undefined,
width: undefined,
height: undefined,
placement: this.props.placement,
});
};
handlePointerEnter = () => {
this.mouseEnterTimeout = window.setTimeout(() => {
// for some reason even after the `this.mouseEnterTimeout` is cleared, it still triggers
// to workaround this issue, check that its value is not `undefined`
// (if it's `undefined`, it means the timer has been reset)
if (
this.mounted &&
this.props.visible === undefined &&
this.mouseEnterTimeout !== undefined
) {
this.setState({ visible: true });
}
}, (this.props.mouseEnterDelay ?? 0) * MILLISECONDS_IN_A_SECOND);
if (this.props.onShow) {
this.props.onShow();
}
};
handlePointerLeave = () => {
if (this.mouseEnterTimeout !== undefined) {
window.clearTimeout(this.mouseEnterTimeout);
this.mouseEnterTimeout = undefined;
}
if (!this.mouseIn) {
this.mouseLeaveTimeout = window.setTimeout(() => {
if (this.mounted && this.props.visible === undefined && !this.mouseIn) {
this.setState({ visible: false });
}
}, (this.props.mouseLeaveDelay ?? 0) * MILLISECONDS_IN_A_SECOND);
if (this.props.onHide) {
this.props.onHide();
}
}
};
handleFocus = () => {
this.setState({ visible: true });
if (this.props.onShow) {
this.props.onShow();
}
};
handleBlur = () => {
this.setState({ visible: false });
};
handleOverlayPointerEnter = () => {
this.mouseIn = true;
};
handleOverlayPointerLeave = () => {
this.mouseIn = false;
this.handlePointerLeave();
};
handleChildPointerEnter = () => {
this.handlePointerEnter();
const { children } = this.props;
const props = children.props as { onPointerEnter?: VoidFunction };
if (typeof props.onPointerEnter === 'function') {
props.onPointerEnter();
}
};
handleChildPointerLeave = () => {
this.handlePointerLeave();
const { children } = this.props;
const props = children.props as { onPointerLeave?: VoidFunction };
if (typeof props.onPointerLeave === 'function') {
props.onPointerLeave();
}
};
needsFlipping = ({ leftFix, topFix }: State) => {
// We can live with a tooltip that's slightly positioned over the toggle
// node. Only trigger if it really starts overlapping, as the re-positioning
// is quite expensive, needing 2 re-renders.
const repositioningThreshold = 8;
switch (this.getPlacement()) {
case PopupPlacement.Left:
case PopupPlacement.Right:
return Boolean(leftFix && Math.abs(leftFix) > repositioningThreshold);
case PopupPlacement.Top:
case PopupPlacement.Bottom:
return Boolean(topFix && Math.abs(topFix) > repositioningThreshold);
default:
return false;
}
};
render() {
const placement = this.getPlacement();
const style = isMeasured(this.state)
? {
left: this.state.left,
top: this.state.top,
width: this.state.width,
height: this.state.height,
}
: undefined;
return (
<>
{React.cloneElement(this.props.children, {
onPointerEnter: this.handleChildPointerEnter,
onPointerLeave: this.handleChildPointerLeave,
onFocus: this.handleFocus,
onBlur: this.handleBlur,
// aria-describedby is the semantically correct property to use, but it's not
// always well supported. We sometimes need to handle this differently, depending
// on the triggering element. We should NOT use aria-labelledby, as this can
// have unintended effects (e.g., this can mess up buttons that need a tooltip).
'aria-describedby': this.id,
})}
{this.isVisible() && (
<TooltipPortal>
<TooltipWrapper
className={classNames(placement)}
onPointerEnter={this.handleOverlayPointerEnter}
onPointerLeave={this.handleOverlayPointerLeave}
ref={this.tooltipNodeRef}
role="tooltip"
style={style}
>
<TooltipWrapperInner>{this.props.overlay}</TooltipWrapperInner>
<TooltipWrapperArrow
style={
isMeasured(this.state)
? this.adjustArrowPosition(placement, this.state)
: undefined
}
/>
</TooltipWrapper>
</TooltipPortal>
)}
</>
);
}
}
class TooltipPortal extends React.Component<React.PropsWithChildren> {
el: HTMLElement;
constructor(props: object) {
super(props);
this.el = document.createElement('div');
}
componentDidMount() {
document.body.appendChild(this.el);
}
componentWillUnmount() {
document.body.removeChild(this.el);
}
render() {
return createPortal(this.props.children, this.el);
}
}
const fadeIn = keyframes`
from {
opacity: 0;
}
to {
opacity: 1;
}
`;
const ARROW_WIDTH = 6;
const ARROW_HEIGHT = 7;
const ARROW_MARGIN = 3;
export const TooltipWrapper = styled.div`
animation: ${fadeIn} 0.3s forwards;
${tw`sw-absolute`}
${tw`sw-z-tooltip`};
${tw`sw-block`};
${tw`sw-box-border`};
${tw`sw-h-auto`};
${tw`sw-body-sm`};
&.top {
margin-top: -${ARROW_MARGIN}px;
padding: ${ARROW_HEIGHT}px 0;
}
&.right {
margin-left: ${ARROW_MARGIN}px;
padding: 0 ${ARROW_HEIGHT}px;
}
&.bottom {
margin-top: ${ARROW_MARGIN}px;
padding: ${ARROW_HEIGHT}px 0;
}
&.left {
margin-left: -${ARROW_MARGIN}px;
padding: 0 ${ARROW_HEIGHT}px;
}
`;
const TooltipWrapperArrow = styled.div`
${tw`sw-absolute`};
${tw`sw-w-0`};
${tw`sw-h-0`};
${tw`sw-border-solid`};
${tw`sw-border-transparent`};
${TooltipWrapper}.top & {
border-width: ${ARROW_HEIGHT}px ${ARROW_WIDTH}px 0;
border-top-color: ${themeColor('tooltipBackground')};
transform: translateX(-${ARROW_WIDTH}px);
${tw`sw-bottom-0`};
${tw`sw-left-1/2`};
}
${TooltipWrapper}.right & {
border-width: ${ARROW_WIDTH}px ${ARROW_HEIGHT}px ${ARROW_WIDTH}px 0;
border-right-color: ${themeColor('tooltipBackground')};
transform: translateY(-${ARROW_WIDTH}px);
${tw`sw-top-1/2`};
${tw`sw-left-0`};
}
${TooltipWrapper}.left & {
border-width: ${ARROW_WIDTH}px 0 ${ARROW_WIDTH}px ${ARROW_HEIGHT}px;
border-left-color: ${themeColor('tooltipBackground')};
transform: translateY(-${ARROW_WIDTH}px);
${tw`sw-top-1/2`};
${tw`sw-right-0`};
}
${TooltipWrapper}.bottom & {
border-width: 0 ${ARROW_WIDTH}px ${ARROW_HEIGHT}px;
border-bottom-color: ${themeColor('tooltipBackground')};
transform: translateX(-${ARROW_WIDTH}px);
${tw`sw-top-0`};
${tw`sw-left-1/2`};
}
`;
export const TooltipWrapperInner = styled.div`
color: ${themeContrast('tooltipBackground')};
background-color: ${themeColor('tooltipBackground')};
${tw`sw-max-w-[22rem]`}
${tw`sw-py-3 sw-px-4`};
${tw`sw-overflow-hidden`};
${tw`sw-text-left`};
${tw`sw-no-underline`};
${tw`sw-break-words`};
${tw`sw-rounded-2`};
hr {
background-color: ${themeColor('tooltipSeparator')};
${tw`sw-mx-4`};
}
`;
|