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import React, { useState, useCallback } from "react"; | |
import { func } from "prop-types"; | |
import { connect } from "react-redux"; | |
import useHistory from "./useHistory"; | |
import FirstStep from "./FirstStep"; | |
import SecondStep from "./SecondStep"; | |
import ThirdStep from "./ThirdStep"; | |
import FlowTransition from "./FlowTransition"; | |
const steps = { | |
first: "first", | |
second: "second", | |
third: "third", | |
// ... | |
}; | |
export function FlowExample({ onSubmit, onCancel }) { | |
const [backwards, setBackwards] = useState(false); | |
const [currentStep, setStep, goBack] = useHistory([steps.first]); | |
// https://reactjs.org/docs/hooks-reference.html#usestate | |
const [firstStepData, setFirstStepData] = useState({}); | |
const [secondStepData, setSecondStepData] = useState({}); | |
const [thirdStepData, setThirdStepData] = useState({}); | |
const handleThirdStepSubmit = useCallback( | |
(newThirdStepData) => { | |
setBackwards(false); | |
onSubmit({ | |
// Change to suit your needs | |
...firstStepData, | |
...secondStepData, | |
...newThirdStepData, | |
}); | |
}, | |
[onSubmit, firstStepData, secondStepData], | |
); | |
const handleThirdStepCancel = useCallback( | |
(newThirdStepData) => { | |
setBackwards(true); | |
setThirdStepData(newThirdStepData); | |
goBack(); | |
}, | |
[goBack, setSecondStepData], | |
); | |
const handleSecondStepSubmit = useCallback( | |
(newSecondStepData) => { | |
setBackwards(false); | |
setSecondStepData(newSecondStepData); | |
setStep(steps.third); | |
}, | |
[setStep, setSecondStepData], | |
); | |
const handleSecondStepCancel = useCallback( | |
(newFirstStepData) => { | |
setBackwards(true); | |
setSecondStepData(newFirstStepData); | |
goBack(); | |
}, | |
[goBack, setSecondStepData], | |
); | |
const handleFirstStepSubmit = useCallback( | |
(newFirstStepData) => { | |
setBackwards(false); | |
setFirstStepData(newFirstStepData); | |
setStep(steps.second); | |
}, | |
[setStep, setFirstStepData], | |
); | |
const handleFirstStepCancel = useCallback( | |
(newFirstStepData) => { | |
setBackwards(true); | |
onCancel({ | |
// Change to suit your needs | |
...newFirstStepData, | |
...secondStepData, | |
...thirdStepData, | |
}); | |
}, | |
[onCancel, secondStepData, thirdStepData], | |
); | |
return ( | |
<FlowTransition | |
backwards={backwards} | |
currentPage={currentStep} | |
pages={{ | |
[steps.first]: () => ( | |
<FirstStep | |
initialValues={firstStepData} | |
onSubmit={handleFirstStepSubmit} | |
onCancel={handleFirstStepCancel} | |
/> | |
), | |
[steps.second]: () => ( | |
<SecondStep | |
name={firstStepData.name} | |
initialValues={secondStepData} | |
onSubmit={handleSecondStepSubmit} | |
onCancel={handleSecondStepCancel} | |
/> | |
), | |
[steps.third]: () => ( | |
<ThirdStep | |
initialValues={thirdStepData} | |
onSubmit={handleThirdStepSubmit} | |
onCancel={handleThirdStepCancel} | |
/> | |
), | |
}} | |
/> | |
); | |
} | |
export default connect( | |
null, // mapStateToProps | |
(dispatch) => ({ | |
// mapDispatchToProps | |
onSubmit: (values) => { | |
// Change to suit your needs | |
debugger; | |
}, | |
onCancel: () => { | |
// Change to suit your needs | |
// dispatch(rouoterActions.goBack()) // is usually a good choice | |
debugger; | |
}, | |
}), | |
)(FlowExample); | |
FlowExample.propTypes = { | |
onSubmit: func, | |
onCancel: func, | |
}; | |
FlowExample.defaultProps = { | |
onSubmit: noop, | |
onCancel: noop, | |
}; | |
function noop() {} |
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import React from "react"; | |
import { string, number, bool, node, element, oneOf, arrayOf } from "prop-types"; | |
import { useTransition, animated } from "react-spring"; | |
import styled from "styled-components"; | |
export default function FlowTransition({ pages, currentPage, backwards, wrapper: TransitionWrapper }) { | |
const transitions = useTransition(currentPage, (p) => p, { | |
from: { | |
position: "absolute", | |
opacity: 0, | |
transform: backwards ? "translate3d(-100%,0,0)" : "translate3d(100%,0, 0)", | |
}, | |
enter: { position: "unset", opacity: 1, transform: "translate3d(0, 0, 0)" }, | |
leave: { | |
position: "absolute", | |
opacity: 0, | |
transform: backwards ? "translate3d(50%,0,0)" : "translate3d(-50%,0, 0)", | |
}, | |
}); | |
return ( | |
<TransitionWrapper> | |
{transitions.map(({ item, props, key }) => { | |
const Page = pages[item]; | |
return ( | |
<animated.div key={key} style={props}> | |
<Page /> | |
</animated.div> | |
); | |
})} | |
</TransitionWrapper> | |
); | |
} | |
const StyledTransitionWrapper = styled.div` | |
will-change: transform, opacity; | |
`; | |
FlowTransition.propTypes = { | |
pages: oneOf([node, arrayOf(node)]), | |
currentPage: oneOf([number, string]), | |
backwards: bool, | |
wrapper: element, | |
}; | |
FlowTransition.defaultProps = { | |
pages: [], | |
currentPage: 0, | |
backwards: false, | |
wrapper: StyledTransitionWrapper, | |
}; |
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import { useState, useCallback } from "react"; | |
export default function useHistory(initialHistory) { | |
const [history, setHistory] = useState(initialHistory || []); | |
const [value, ...previousValues] = history; | |
const undo = useCallback(() => { | |
// useCallback is used for performance reasons | |
// https://reactjs.org/docs/hooks-reference.html#usecallback | |
setHistory(previousValues); | |
}, [history, setHistory]); | |
const setValue = useCallback( | |
(newValue) => { | |
setHistory([newValue, ...history]); | |
}, | |
[history, setHistory], | |
); | |
return [value, setValue, undo, previousValues]; | |
} |
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