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✨ Added swipe actions to the transition pages component
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,24 +1,142 @@ | ||
| import styled, { lightTheme } from '@slup/theming' | ||
| import Inferno, { linkEvent } from 'inferno' | ||
| import Component from 'inferno-component' | ||
| import styled from '@slup/theming' | ||
|
|
||
| const Scroll = styled.div` | ||
| overflow-x: hidden; | ||
| height: 100%; | ||
| ` | ||
|
|
||
| export const Pages = styled.div` | ||
| height: 100%; | ||
| width: auto; | ||
| display: flex; | ||
| transition: transform 300ms cubic-bezier(0.4, 0.0, 0.2, 1); | ||
| transform: ${props => `translateX(-${props.selected * 100}%)`} | ||
| transition: transform 200ms ${props => !props.touched | ||
| ? 'cubic-bezier(0.4, 0.0, 0.2, 1)' | ||
| : 'none' | ||
| }; | ||
| ` | ||
|
|
||
| export const Page = styled.div` | ||
| flex-shrink: 0; | ||
| height: 100%; | ||
| width: 100%; | ||
| ` | ||
|
|
||
| export const TransitionPages = props => | ||
| <Scroll> | ||
| <Pages {...props} /> | ||
| </Scroll> | ||
| interface IProps { | ||
| selected: number | ||
| onSwipe: (index: number) => void | ||
| } | ||
|
|
||
| interface IState { | ||
| touched: boolean | ||
| startX: number | ||
| translate: number | ||
| } | ||
|
|
||
| export class TransitionPages extends Component<IProps, IState> { | ||
| private container: HTMLDivElement | ||
|
|
||
| public state: IState = { | ||
| touched: false, | ||
| startX: 0, | ||
| translate: 0 | ||
| } | ||
|
|
||
| public componentWillReceiveProps(nextProps: IProps) { | ||
| const stateSelection = Math.round(this.state.translate / 100) | ||
| const DID_PROP_CHANGE = this.props.selected !== nextProps.selected | ||
|
|
||
| if(nextProps.selected !== stateSelection && DID_PROP_CHANGE) { | ||
| this.setState({ translate: nextProps.selected * 100 }) | ||
| this.emitSwipe(nextProps.selected) | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Emit the new selected index to a possible onSwipe listener | ||
| * | ||
| * @param index the new index | ||
| */ | ||
| private emitSwipe(index: number) { | ||
| if(this.props.onSwipe && typeof this.props.onSwipe == 'function') { | ||
| this.props.onSwipe(index) | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Saves the latest touch on the x axis | ||
| * | ||
| * @param self The local class | ||
| * @param event The data from the fired event | ||
| */ | ||
| private handleTouchStart(self, { targetTouches }) { | ||
| const { translate } = self.state | ||
| const { clientX } = targetTouches[0] | ||
| const { clientWidth } = self.container | ||
|
|
||
| const increment = (translate * clientWidth) / 100 | ||
|
|
||
| self.setState({ | ||
| touched: true, | ||
| startX: clientX + increment | ||
| }) | ||
| } | ||
|
|
||
| /** | ||
| * Creates a percentage to move the container | ||
| * using the current touch and the saved one | ||
| * on the x axis | ||
| * | ||
| * @param self The local class | ||
| * @param event The data from the fired event | ||
| */ | ||
| private handleTouchMove(self, { targetTouches }) { | ||
| const { startX } = self.state | ||
| const { clientX } = targetTouches[0] | ||
| const { clientWidth } = self.container | ||
| const childrenCount = self.container.children[0].children.length | ||
|
|
||
| let percentage = ((startX - clientX) / clientWidth) * 100 | ||
|
|
||
| if (percentage < 0) | ||
| percentage = 0 | ||
| else if (percentage > ((childrenCount - 1) * 100)) | ||
| percentage = (childrenCount - 1) * 100 | ||
|
|
||
| self.setState({ translate: percentage }) | ||
| } | ||
|
|
||
| /** | ||
| * Rounds the percentage | ||
| * | ||
| * @param self The local class | ||
| */ | ||
| private handleTouchEnd(self) { | ||
| self.setState({ | ||
| touched: false, | ||
| translate: Math.round(self.state.translate / 100) * 100 | ||
| }) | ||
|
|
||
| self.emitSwipe(Math.round(self.state.translate / 100)) | ||
| } | ||
|
|
||
| public render(props, { translate, touched }) { | ||
| return( | ||
| <Scroll | ||
| {...props} | ||
| innerRef={e => this.container = e} | ||
| onTouchStart={linkEvent(this, this.handleTouchStart)} | ||
| onTouchMove={linkEvent(this, this.handleTouchMove)} | ||
| onTouchEnd={linkEvent(this, this.handleTouchEnd)} | ||
| > | ||
| <Pages | ||
| selected={props.selected} | ||
| touched={touched} | ||
| style={`transform: translateX(-${translate}%)`} | ||
| > | ||
| {props.children} | ||
| </Pages> | ||
| </Scroll> | ||
| ) | ||
| } | ||
| } |