/**
* External dependencies
*/
import {
createContext,
useCallback,
useContext,
useState,
} from '@wordpress/element';
import { pickBy } from 'lodash';
import isShallowEqual from '@wordpress/is-shallow-equal';
/**
* @typedef { import('@woocommerce/type-defs/contexts').ValidationContext } ValidationContext
* @typedef {import('react')} React
*/
const ValidationContext = createContext( {
getValidationError: () => '',
setValidationErrors: ( errors ) => void errors,
clearValidationError: ( property ) => void property,
clearAllValidationErrors: () => void null,
hideValidationError: () => void null,
showValidationError: () => void null,
showAllValidationErrors: () => void null,
hasValidationErrors: false,
getValidationErrorId: ( errorId ) => errorId,
} );
/**
* @return {ValidationContext} The context values for the validation context.
*/
export const useValidationContext = () => {
return useContext( ValidationContext );
};
/**
* Validation context provider
*
* Any children of this context will be exposed to validation state and helpers
* for tracking validation.
*
* @param {Object} props Incoming props for the component.
* @param {JSX.Element} props.children What react elements are wrapped by this component.
*/
export const ValidationContextProvider = ( { children } ) => {
const [ validationErrors, updateValidationErrors ] = useState( {} );
/**
* This retrieves any validation error message that exists in state for the
* given property name.
*
* @param {string} property The property the error message is for.
*
* @return {Object} The error object for the given property.
*/
const getValidationError = useCallback(
( property ) => validationErrors[ property ],
[ validationErrors ]
);
/**
* Provides an id for the validation error that can be used to fill out
* aria-describedby attribute values.
*
* @param {string} errorId The input css id the validation error is related
* to.
* @return {string} The id to use for the validation error container.
*/
const getValidationErrorId = useCallback(
( errorId ) => {
const error = validationErrors[ errorId ];
if ( ! error || error.hidden ) {
return '';
}
return `validate-error-${ errorId }`;
},
[ validationErrors ]
);
/**
* Clears any validation error that exists in state for the given property
* name.
*
* @param {string} property The name of the property to clear if exists in
* validation error state.
*/
const clearValidationError = useCallback(
/**
* Callback that is memoized.
*
* @param {string} property
*/
( property ) => {
updateValidationErrors(
/**
* Callback for validation Errors handling.
*
* @param {Object} prevErrors
*/
( prevErrors ) => {
if ( ! prevErrors[ property ] ) {
return prevErrors;
}
const {
// eslint-disable-next-line no-unused-vars -- this is intentional to omit the dynamic property from the returned object.
[ property ]: clearedProperty,
...newErrors
} = prevErrors;
return newErrors;
}
);
},
[]
);
/**
* Clears the entire validation error state.
*/
const clearAllValidationErrors = useCallback(
() => void updateValidationErrors( {} ),
[]
);
/**
* Used to record new validation errors in the state.
*
* @param {Object} newErrors An object where keys are the property names the
* validation error is for and values are the
* validation error message displayed to the user.
*/
const setValidationErrors = useCallback( ( newErrors ) => {
if ( ! newErrors ) {
return;
}
updateValidationErrors( ( prevErrors ) => {
newErrors = pickBy( newErrors, ( error, property ) => {
if ( typeof error.message !== 'string' ) {
return false;
}
if ( prevErrors.hasOwnProperty( property ) ) {
return ! isShallowEqual( prevErrors[ property ], error );
}
return true;
} );
if ( Object.values( newErrors ).length === 0 ) {
return prevErrors;
}
return {
...prevErrors,
...newErrors,
};
} );
}, [] );
/**
* Used to update a validation error.
*
* @param {string} property The name of the property to update.
* @param {Object} newError New validation error object.
*/
const updateValidationError = useCallback( ( property, newError ) => {
updateValidationErrors( ( prevErrors ) => {
if ( ! prevErrors.hasOwnProperty( property ) ) {
return prevErrors;
}
const updatedError = {
...prevErrors[ property ],
...newError,
};
return isShallowEqual( prevErrors[ property ], updatedError )
? prevErrors
: {
...prevErrors,
[ property ]: updatedError,
};
} );
}, [] );
/**
* Given a property name and if an associated error exists, it sets its
* `hidden` value to true.
*
* @param {string} property The name of the property to set the `hidden`
* value to true.
*/
const hideValidationError = useCallback(
( property ) =>
void updateValidationError( property, {
hidden: true,
} ),
[ updateValidationError ]
);
/**
* Given a property name and if an associated error exists, it sets its
* `hidden` value to false.
*
* @param {string} property The name of the property to set the `hidden`
* value to false.
*/
const showValidationError = useCallback(
( property ) =>
void updateValidationError( property, {
hidden: false,
} ),
[ updateValidationError ]
);
/**
* Sets the `hidden` value of all errors to `false`.
*/
const showAllValidationErrors = useCallback(
() =>
void updateValidationErrors( ( prevErrors ) => {
const updatedErrors = {};
Object.keys( prevErrors ).forEach( ( property ) => {
if ( prevErrors[ property ].hidden ) {
updatedErrors[ property ] = {
...prevErrors[ property ],
hidden: false,
};
}
} );
if ( Object.values( updatedErrors ).length === 0 ) {
return prevErrors;
}
return {
...prevErrors,
...updatedErrors,
};
} ),
[]
);
const context = {
getValidationError,
setValidationErrors,
clearValidationError,
clearAllValidationErrors,
hideValidationError,
showValidationError,
showAllValidationErrors,
hasValidationErrors: Object.keys( validationErrors ).length > 0,
getValidationErrorId,
};
return (
{ children }
);
};
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