Created
February 10, 2019 19:22
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React list cell implementation with buttons hidden below the cell content when on mobile (alla Apple Mail on iOS)
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.my-cell { | |
position: relative; | |
height: 64px; | |
width: 100%; | |
margin-top: 1rem; | |
margin-bottom: 1rem; | |
.my-cell-content { | |
position: absolute; | |
top: 0; | |
left: 0; | |
bottom: 0; | |
right: 0; | |
display: flex; | |
flex-direction: row; | |
justify-content: flex-start; | |
align-items: center; | |
padding-left: 1rem; | |
padding-right: 1rem; | |
background-color: #FFFFFF; | |
} | |
.my-cell-buttons { | |
position: absolute; | |
top: 0; | |
left: 0; | |
bottom: 0; | |
right: 0; | |
display: flex; | |
flex-direction: row; | |
justify-content: space-between; | |
align-items: stretch; | |
span { | |
height: 64px; | |
width: 64px; | |
} | |
.my-cell-buttons-left { | |
margin: 0; | |
padding: 0; | |
display: flex; | |
flex-direction: row; | |
justify-content: flex-start; | |
align-items: center; | |
} | |
.my-cell-buttons-right { | |
margin: 0; | |
padding: 0; | |
display: flex; | |
flex-direction: row; | |
justify-content: flex-end; | |
align-items: center; | |
} | |
} | |
} | |
@media only screen and (min-width: 1088px) { | |
.my-cell { | |
height: 64px; | |
width: 100%; | |
margin-top: 1rem; | |
margin-bottom: 1rem; | |
display: flex; | |
flex-direction: row-reverse; | |
justify-content: space-between; | |
align-items: stretch; | |
.my-cell-content { | |
position: relative; | |
display: flex; | |
flex-direction: row; | |
justify-content: flex-start; | |
align-items: center; | |
padding-left: 1rem; | |
padding-right: 1rem; | |
transform: translateX(0) !important; | |
} | |
.my-cell-buttons { | |
position: relative; | |
display: flex; | |
flex-direction: row; | |
justify-content: space-between; | |
align-items: stretch; | |
span { | |
height: 64px; | |
width: 64px; | |
background-color: transparent !important; | |
color: #000000 !important; | |
cursor: pointer; | |
} | |
.my-cell-buttons-left { | |
margin: 0; | |
padding: 0; | |
display: flex; | |
flex-direction: row; | |
justify-content: flex-start; | |
align-items: center; | |
} | |
.my-cell-buttons-right { | |
margin: 0; | |
padding: 0; | |
display: flex; | |
flex-direction: row; | |
justify-content: flex-end; | |
align-items: center; | |
} | |
} | |
} | |
} |
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import React, { Component } from 'react'; | |
import Hammer from 'hammerjs'; | |
import './Cell.scss'; | |
const BUTTON_WIDTH = 64; | |
interface Props { | |
buttons?: { icon: string; color: string; backgroundColor: string; side: 'left' | 'right'; onClick: () => void }[]; | |
sensitivity?: number; | |
onClick?: () => void; | |
} | |
interface State { | |
currentPosition: number; | |
translateValue: number; | |
} | |
export default class Cell extends Component<Props, State> { | |
public state: State = { | |
currentPosition: 0, | |
translateValue: 0 | |
} | |
private sliderEl: React.RefObject<HTMLDivElement> = React.createRef(); | |
private sliderManager?: HammerManager; | |
public componentDidMount(): void { | |
const { sliderEl } = this; | |
if (!sliderEl.current) | |
return; | |
this.sliderManager = new Hammer.Manager(sliderEl.current); | |
this.sliderManager.add(new Hammer.Pan({ threshold: 0, pointers: 0 })); | |
this.sliderManager.on('pan', this.handlePanGesture); | |
} | |
public render(): JSX.Element { | |
const { buttons = [], children, onClick = () => null } = this.props; | |
const { translateValue } = this.state; | |
return ( | |
<div | |
ref={this.sliderEl} | |
className="my-cell" | |
> | |
<div className="my-cell-buttons"> | |
<div className="my-cell-buttons-left"> | |
{ | |
buttons | |
.filter(btn => btn.side === 'left') | |
.map(btn => | |
<span | |
key={btn.icon} | |
className="icon is-medium" | |
style={{ | |
backgroundColor: btn.backgroundColor, | |
color: btn.color | |
}} | |
onClick={btn.onClick} | |
> | |
<i className={`ion-${btn.icon}`}></i> | |
</span> | |
) | |
} | |
</div> | |
<div className="my-cell-buttons-right"> | |
{ | |
buttons | |
.filter(btn => btn.side === 'right') | |
.map(btn => | |
<span | |
key={btn.icon} | |
className="icon is-medium" | |
style={{ | |
backgroundColor: btn.backgroundColor, | |
color: btn.color | |
}} | |
onClick={btn.onClick} | |
> | |
<i className={`ion-${btn.icon}`}></i> | |
</span> | |
) | |
} | |
</div> | |
</div> | |
<div | |
className="my-cell-content" | |
style={{ | |
transform: `translateX(${translateValue}px)`, | |
transition: 'transform ease-out 0.45s' | |
}} | |
onClick={onClick} | |
> | |
{children} | |
</div> | |
</div> | |
); | |
} | |
private goTo = (position: number) => { | |
const { buttons = [] } = this.props; | |
if (position < 0) { | |
this.setState({ | |
translateValue: buttons.reduce((acum, cur) => acum + (cur.side === 'left' ? 1 : 0), 0) * 64, | |
currentPosition: buttons.reduce((acum, cur) => acum + (cur.side === 'left' ? 1 : 0), 0) > 0 ? -1 : 0 | |
}); | |
} else if (position > 0) { | |
this.setState({ | |
translateValue: - buttons.reduce((acum, cur) => acum + (cur.side === 'right' ? 1 : 0), 0) * 64, | |
currentPosition: buttons.reduce((acum, cur) => acum + (cur.side === 'right' ? 1 : 0), 0) ? 1 : 0 | |
}); | |
} else { | |
this.setState({ translateValue: 0, currentPosition: 0 }); | |
} | |
} | |
private handlePanGesture = (e: HammerInput) => { | |
const { sliderEl } = this; | |
const { sensitivity = 32, buttons = [] } = this.props; | |
const { currentPosition } = this.state; | |
if (!sliderEl.current) | |
return; | |
const offset = currentPosition === 1 ? | |
buttons.reduce((acum, cur) => acum + (cur.side === 'left' ? 1 : 0), 0) : | |
(currentPosition === 2 ? | |
buttons.reduce((acum, cur) => acum + (cur.side === 'right' ? 1 : 0), 0) : | |
0); | |
this.setState({ translateValue: BUTTON_WIDTH * offset + e.deltaX }); | |
if (!e.isFinal) { | |
return; | |
} | |
if (Math.abs(e.deltaX) > sensitivity) { | |
this.goTo(e.deltaX > 0 ? currentPosition - 1 : currentPosition + 1); | |
} else { | |
this.goTo(currentPosition); | |
} | |
} | |
} |
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