diff options
Diffstat (limited to 'packages/merchant-backoffice/src/components/form/useField.tsx')
-rw-r--r-- | packages/merchant-backoffice/src/components/form/useField.tsx | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/packages/merchant-backoffice/src/components/form/useField.tsx b/packages/merchant-backoffice/src/components/form/useField.tsx deleted file mode 100644 index 8479d7a..0000000 --- a/packages/merchant-backoffice/src/components/form/useField.tsx +++ /dev/null @@ -1,86 +0,0 @@ -/* - This file is part of GNU Taler - (C) 2021 Taler Systems S.A. - - GNU Taler is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - GNU Taler 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 General Public License for more details. - - You should have received a copy of the GNU General Public License along with - GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/> - */ - -/** -* -* @author Sebastian Javier Marchano (sebasjm) -*/ - -import { ComponentChildren, VNode } from "preact"; -import { useFormContext } from "./FormProvider"; - -interface Use<V> { - error?: string; - required: boolean; - value: any; - initial: any; - onChange: (v: V) => void; - toStr: (f: V | undefined) => string; - fromStr: (v: string) => V -} - -export function useField<T>(name: keyof T): Use<T[typeof name]> { - const { errors, object, initialObject, toStr, fromStr, valueHandler } = useFormContext<T>() - type P = typeof name - type V = T[P] - - const updateField = (field: P) => (value: V): void => { - return valueHandler((prev) => { - return setValueDeeper(prev, String(field).split('.'), value) - }) - } - - const defaultToString = ((f?: V): string => String(!f ? '' : f)) - const defaultFromString = ((v: string): V => v as any) - const value = readField(object, String(name)) - const initial = readField(initialObject, String(name)) - const isDirty = value !== initial - const hasError = readField(errors, String(name)) - return { - error: isDirty ? hasError : undefined, - required: !isDirty && hasError, - value, - initial, - onChange: updateField(name) as any, - toStr: toStr[name] ? toStr[name]! : defaultToString, - fromStr: fromStr[name] ? fromStr[name]! : defaultFromString, - } -} -/** - * read the field of an object an support accessing it using '.' - * - * @param object - * @param name - * @returns - */ -const readField = (object: any, name: string) => { - return name.split('.').reduce((prev, current) => prev && prev[current], object) -} - -const setValueDeeper = (object: any, names: string[], value: any): any => { - if (names.length === 0) return value - const [head, ...rest] = names - return { ...object, [head]: setValueDeeper(object[head] || {}, rest, value) } -} - -export interface InputProps<T> { - name: T; - label: ComponentChildren; - placeholder?: string; - tooltip?: ComponentChildren; - readonly?: boolean; - help?: ComponentChildren; -}
\ No newline at end of file |