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type ComponentInternalInstance,
DeprecationTypes,
type Directive,
type LegacyConfig,
compatUtils,
getCurrentInstance,
} from '@vue/runtime-core'
import { hyphenate, isArray } from '@vue/shared'
const systemModifiers = ['ctrl', 'shift', 'alt', 'meta'] as const
type SystemModifiers = (typeof systemModifiers)[number]
type CompatModifiers = keyof typeof keyNames
export type VOnModifiers = SystemModifiers | ModifierGuards | CompatModifiers
type KeyedEvent = KeyboardEvent | MouseEvent | TouchEvent
type ModifierGuards =
| 'shift'
| 'ctrl'
| 'alt'
| 'meta'
| 'left'
| 'right'
| 'stop'
| 'prevent'
| 'self'
| 'middle'
| 'exact'
const modifierGuards: Record<
ModifierGuards,
| ((e: Event) => void | boolean)
| ((e: Event, modifiers: string[]) => void | boolean)
> = {
stop: (e: Event) => e.stopPropagation(),
prevent: (e: Event) => e.preventDefault(),
self: (e: Event) => e.target !== e.currentTarget,
ctrl: (e: Event) => !(e as KeyedEvent).ctrlKey,
shift: (e: Event) => !(e as KeyedEvent).shiftKey,
alt: (e: Event) => !(e as KeyedEvent).altKey,
meta: (e: Event) => !(e as KeyedEvent).metaKey,
left: (e: Event) => 'button' in e && (e as MouseEvent).button !== 0,
middle: (e: Event) => 'button' in e && (e as MouseEvent).button !== 1,
right: (e: Event) => 'button' in e && (e as MouseEvent).button !== 2,
exact: (e, modifiers) =>
systemModifiers.some(m => (e as any)[`${m}Key`] && !modifiers.includes(m)),
}
/**
* @private
*/
export const withModifiers = <
T extends (event: Event, ...args: unknown[]) => any,
>(
fn: T & { _withMods?: { [key: string]: T } },
modifiers: VOnModifiers[],
): T => {
const cache = fn._withMods || (fn._withMods = {})
const cacheKey = modifiers.join('.')
return (
cache[cacheKey] ||
(cache[cacheKey] = ((event, ...args) => {
for (let i = 0; i < modifiers.length; i++) {
const guard = modifierGuards[modifiers[i] as ModifierGuards]
if (guard && guard(event, modifiers)) return
}
return fn(event, ...args)
}) as T)
)
}
// Kept for 2.x compat.
// Note: IE11 compat for `spacebar` and `del` is removed for now.
const keyNames: Record<
'esc' | 'space' | 'up' | 'left' | 'right' | 'down' | 'delete',
string
> = {
esc: 'escape',
space: ' ',
up: 'arrow-up',
left: 'arrow-left',
right: 'arrow-right',
down: 'arrow-down',
delete: 'backspace',
}
/**
* @private
*/
export const withKeys = <T extends (event: KeyboardEvent) => any>(
fn: T & { _withKeys?: { [k: string]: T } },
modifiers: string[],
): T => {
let globalKeyCodes: LegacyConfig['keyCodes']
let instance: ComponentInternalInstance | null = null
if (__COMPAT__) {
instance = getCurrentInstance()
if (
compatUtils.isCompatEnabled(DeprecationTypes.CONFIG_KEY_CODES, instance)
) {
if (instance) {
globalKeyCodes = (instance.appContext.config as LegacyConfig).keyCodes
}
}
if (__DEV__ && modifiers.some(m => /^\d+$/.test(m))) {
compatUtils.warnDeprecation(
DeprecationTypes.V_ON_KEYCODE_MODIFIER,
instance,
)
}
}
const cache: { [k: string]: T } = fn._withKeys || (fn._withKeys = {})
const cacheKey = modifiers.join('.')
return (
cache[cacheKey] ||
(cache[cacheKey] = (event => {
if (!('key' in event)) {
return
}
const eventKey = hyphenate(event.key)
if (
modifiers.some(
k =>
k === eventKey ||
keyNames[k as unknown as CompatModifiers] === eventKey,
)
) {
return fn(event)
}
if (__COMPAT__) {
const keyCode = String(event.keyCode)
if (
compatUtils.isCompatEnabled(
DeprecationTypes.V_ON_KEYCODE_MODIFIER,
instance,
) &&
modifiers.some(mod => mod == keyCode)
) {
return fn(event)
}
if (globalKeyCodes) {
for (const mod of modifiers) {
const codes = globalKeyCodes[mod]
if (codes) {
const matches = isArray(codes)
? codes.some(code => String(code) === keyCode)
: String(codes) === keyCode
if (matches) {
return fn(event)
}
}
}
}
}
}) as T)
)
}
export type VOnDirective = Directive<any, any, VOnModifiers>
|