Feat(front): define UI design tokens and utilities
Co-Authored-By: ArneBo <arne@ecobasa.org> Co-Authored-By: Flupsi <upsiflu@gmail.com> Co-Authored-By: jon r <jon@allmende.io>
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jon r
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import type { Entries, Entry, KeysOfUnion } from 'type-fest'
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import type { HTMLAttributes } from 'vue'
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export type AlignmentProps = {
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alignText?: 'start' | 'center' | 'end' | 'stretch' | 'space-out',
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alignSelf?: 'start' | 'center' | 'end' | 'auto' | 'baseline' | 'stretch',
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alignItems?: 'start' | 'center' | 'end' | 'auto' | 'baseline' | 'stretch'
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} & {
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[T in 'center' | 'stretch']?: true
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}
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export type Key = KeysOfUnion<AlignmentProps>
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const styles = {
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center: 'place-content: center center; place-self: center center;',
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stretch: 'place-content: stretch stretch; place-self: stretch stretch;',
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alignText: (a:AlignmentProps['alignText']) => ({
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start: 'justify-content: flex-start;',
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center: 'place-content: center;',
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baseline: 'align-items: baseline;',
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end: 'justify-content: flex-end;',
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stretch: 'place-content: stretch;',
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'space-out': 'place-content: space-between;'
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}[a!]),
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alignSelf: (a:AlignmentProps['alignSelf']) => ({
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start: 'align-self: flex-start;',
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center: 'align-self: center;',
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end: 'align-self: flex-end;',
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auto: 'align-self: auto;',
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baseline: 'align-self: baseline;',
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stretch: 'align-self: stretch;'
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}[a!]),
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alignItems: (a:AlignmentProps['alignSelf']) => ({
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start: 'align-items: flex-start;',
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center: 'align-items: center;',
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end: 'align-items: flex-end;',
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auto: 'align-items: auto;',
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baseline: 'align-items: baseline;',
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stretch: 'align-items: stretch;'
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}[a!])
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} as const
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const getStyle = (props : Partial<AlignmentProps>) => ([key, value]: Entry<AlignmentProps>):string =>
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(
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typeof styles[key] === 'string'
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? styles[key]
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// @ts-expect-error We know that props[key] is a value accepted by styles[key]. The ts compiler is not so smart.
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: (styles[key]((key in props && props[key]) ? props[((props[key]), (key))] : value))
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)
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const merge = (rules: string[]) => (attributes: HTMLAttributes = {}) =>
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rules.length === 0
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? attributes
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: ({
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...attributes,
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style: rules.join(' ') + ('style' in attributes ? attributes.style + ' ' : '')
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})
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// All keys are exclusive
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const conflicts: Set<Key>[] = [
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new Set(['center', 'stretch']),
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new Set(['alignText']),
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new Set(['alignSelf'])
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]
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/**
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* Add alignment styles to your component.
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* Alignments are designed to work both in a grid and flex contexts but may fail in normal context.
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*
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* (1) Add `& AlignmentProps` to your `Props` type
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* (2) Call `v-bind="alignment(props)"` on your component template
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* (3) Now your component accepts width props such as `align-text="center"`.
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*
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* @param props Your component's props (or ...rest props if you have destructured them already)
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* @param defaults These props are applied immediately and can be overridden by the user
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* @param attributes Optional: To compose width, color, alignment, etc.
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* @returns the corresponding `{ style }` object
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*/
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export const align = <TProps extends Partial<AlignmentProps>>(
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props: TProps,
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defaults: Partial<AlignmentProps> = {}
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) => merge(
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((Object.entries(props) as Entries<TProps>).reduce(
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(acc, [key, value]) =>
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value && key in styles
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? acc.filter(([accKey, _]) => !conflicts.find(set => set.has(accKey) && set.has(key)))
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.concat([[key, value]])
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: acc
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,
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(Object.entries(defaults)) as Entries<Partial<AlignmentProps>>
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)).map(getStyle(props))
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)
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import type { KeysOfUnion } from 'type-fest'
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import type { HTMLAttributes } from 'vue'
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export type DefaultProps =
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| { default?: true }
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export type Default = KeysOfUnion<DefaultProps>
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export type ColorProps =
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| { primary?: true }
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| { secondary?: true }
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| { destructive?: true }
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export type Color = KeysOfUnion<ColorProps>
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export type PastelProps =
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| { red?: true }
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| { blue?: true }
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| { purple?: true }
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| { green?: true }
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| { yellow?: true }
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export type Pastel = KeysOfUnion<PastelProps>
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export type VariantProps =
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| { solid?: true }
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| { outline?: true }
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| { ghost?: true }
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export type Variant = KeysOfUnion<VariantProps>
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export type InteractiveProps =
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| { interactive?: true }
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export type Interactive = KeysOfUnion<DefaultProps>
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export type RaisedProps =
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| { raised?: true }
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export type Raised = KeysOfUnion<RaisedProps>
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/* Props to Classes */
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export type Props =
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(DefaultProps | ColorProps | PastelProps) & VariantProps & InteractiveProps & RaisedProps
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export type Key =
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KeysOfUnion<Props>
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// You can only have one color
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const conflicts: Set<Key>[] = [
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new Set(['default', 'primary', 'secondary', 'destructive', 'red', 'blue', 'purple', 'green', 'yellow']),
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new Set(['solid', 'outline', 'ghost'])
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]
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const classes = {
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default: 'default',
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primary: 'primary',
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secondary: 'secondary',
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destructive: 'destructive',
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red: 'red',
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blue: 'blue',
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purple: 'purple',
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green: 'green',
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yellow: 'yellow',
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outline: 'outline',
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ghost: 'ghost',
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solid: 'solid',
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raised: 'raised',
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interactive: 'interactive'
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} satisfies Record<Key, string>
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const getPrecedence = (searchKey:Key | string) =>
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Object.entries(classes).findIndex(([key, _]) => key === searchKey)
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/**
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* @param props A superset of `{ Key? : true }`
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* @returns the number of actually applied classes (if there are no defaults)
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*/
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export const isNoColors = (props: Partial<Props>) =>
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!color(props)().class
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const merge = (classes: string[]) => (attributes: HTMLAttributes = {}) =>
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classes.length === 0
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? attributes
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: ({
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...attributes,
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class: classes.join(' ') + ('class' in attributes ? attributes.class + ' ' : '')
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})
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/**
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* Add color classes to your component.
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* Color classes are defined in `colors.scss`. Make sure to implement the correct style there!
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*
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* (1) Add a subset of `& (DefaultProps | ColorProps | PastelProps) & VariantProps & InteractiveProps & RaisedProps` to your `Props` type
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* (2) Call `v-bind="color(props)"` on your component template
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* (3) Now your component accepts color props such as `secondary outline raised`.
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*
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* Composable with `width`, `color`, `alignment`, etc.
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*
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* @param props Your component's props (or ...rest props if you have destructured them already)
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* @param defaults These props are applied immediately and can be overridden by the user
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* @returns a function from the resulting attributes the corresponding `class` object
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*/
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export const color = (props: Partial<Props>, defaults?: Key[]) =>
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merge(
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Object.entries(props)
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.sort(([a, _], [b, __]) => getPrecedence(a) - getPrecedence(b))
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.reduce(
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(acc, [key, value]) =>
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value && key in classes
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? acc.filter(accKey => !conflicts.find(set => set.has(accKey) && set.has(key as Key)))
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.concat([key as Key])
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: acc
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,
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defaults || []
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)
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)
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type ColorSelector =
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`${Color | Pastel | Default}${'' | ` ${Variant}${'' | ' interactive'}${'' | ' raised'}`}`
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// Convenience function for applying default colors. Prefer using `color`
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export const setColors = (color: ColorSelector) =>
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({ class: color })
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import type { Entries, KeysOfUnion } from 'type-fest'
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import type { HTMLAttributes } from 'vue'
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export type WidthProps =
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| { minContent?: true }
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| { iconWidth?: true }
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| { tiny?: true }
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| { buttonWidth?: true }
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| { small?: true }
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| { medium?: true }
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| { auto?: true }
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| { full?: true }
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| { grow?: true }
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| { width?: string }
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| { square?: true }
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| { squareSmall?: true }
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| { lowHeight?: true }
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| { normalHeight?: true }
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export type Key = KeysOfUnion<WidthProps>
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const widths = {
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minContent: 'width: min-content; flex-grow: 0;',
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iconWidth: 'width: 40px;',
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tiny: 'width: 124px; --grid-column: span 2;',
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buttonWidth: 'width: 136px; --grid-column: span 2; flex-grow: 0; min-width: min-content;',
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small: 'width: 202px; --grid-column: span 3;',
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medium: 'width: 280px; --grid-column: span 4;',
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auto: 'width: auto;',
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full: 'width: auto; --grid-column: 1 / -1; place-self: stretch;',
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grow: 'flex-grow: 1;',
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width: (w: string) => `width: ${w}; flex-grow:0;`
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} as const
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const sizes = {
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squareSmall: 'height: 40px; width: 40px; padding: 4px; justify-content: center;',
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square: 'height: 48px; width: 48px; justify-content: center;',
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lowHeight: 'height: 40px;',
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normalHeight: 'height: 48px;'
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} as const
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const styles = {
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...widths, ...sizes
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} as const satisfies Record<Key, string | ((w: string) => string)>
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// The `lint:tsc` script more errors here than the language server is happy.
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// TODO: Fix this Issue: https://dev.funkwhale.audio/funkwhale/funkwhale/-/issues/2437
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const getStyle = (props: Partial<WidthProps>) => (key: Key):string =>
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key in props
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? typeof styles[key] === 'function'
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// @ts-expect-error Typescript is hard. Make the typescript compiler understand `key in props`
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? styles[key](props[key])
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: styles[key] as string
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: ''
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// All keys are exclusive
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const conflicts: Set<Key>[] = [
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new Set(Object.keys(widths) as Key[]),
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new Set(Object.keys(sizes) as Key[])
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]
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const merge = (rules: string[]) => (attributes: HTMLAttributes = {}) =>
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rules.length === 0
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? attributes
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: ({
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...attributes,
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style: rules.join(' ') + ('style' in attributes ? ' ' + attributes.style : '')
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})
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/**
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* Add a width style to your component.
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* Widths are designed to work both in a page-grid context and in a flex or normal context.
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*
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* (1) Add `& WidthProps` to your `Props` type
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* (2) Call `v-bind="width(props)"` on your component template
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* (3) Now your component accepts width props such as `small`, `medium`, `stretch`.
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*
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* @param props Your component's props (or ...rest props if you have destructured them already)
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* @param defaults These props are applied immediately and can be overridden by the user
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* @param attributes Optional: To compose width, color, alignment, etc.
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* @returns the corresponding `{ style }` object
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*/
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export const width = <TProps extends Partial<WidthProps>>(
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props: TProps,
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defaults: Key[] = []
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) => merge(
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(Object.entries(props) as Entries<TProps>).reduce(
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(acc, [key, value]) =>
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value && key in styles
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? acc.filter(accKey => !conflicts.find(set => set.has(accKey) && set.has(key)))
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.concat([key])
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: acc
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,
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defaults
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).map(getStyle(props))
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)
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