useManualRefHistory

using 调用 commit() 时手动跟踪 ref 的更改历史记录，还提供撤消和重做功能

¥Manually track the change history of a ref when the using calls commit(), also provides undo and redo functionality

示例

source

Count: 0

/

History (limited to 10 records for demo)

2024-11-02 16:30:06{ value: 0 }

用法

¥Usage

import { useManualRefHistory } from '@vueuse/core'
import { ref } from 'vue'

const counter = ref(0)
const { history, commit, undo, redo } = useManualRefHistory(counter)

counter.value += 1
commit()

console.log(history.value)
/* [
  { snapshot: 1, timestamp: 1601912898062 },
  { snapshot: 0, timestamp: 1601912898061 }
] */

你可以使用 undo 将参考值重置为最后一个历史点。

¥You can use undo to reset the ref value to the last history point.

console.log(counter.value) // 1
undo()
console.log(counter.value) // 0

可变对象的历史

¥History of mutable objects

如果要更改源代码，则需要传递自定义克隆函数或使用 clone true 作为参数，这是最小克隆函数 x => JSON.parse(JSON.stringify(x)) 的快捷方式，该函数将在 dump 和 parse 中使用。

¥If you are going to mutate the source, you need to pass a custom clone function or use clone true as a param, that is a shortcut for a minimal clone function x => JSON.parse(JSON.stringify(x)) that will be used in both dump and parse.

import { useManualRefHistory } from '@vueuse/core'
import { ref } from 'vue'

const counter = ref({ foo: 1, bar: 2 })
const { history, commit, undo, redo } = useManualRefHistory(counter, { clone: true })

counter.value.foo += 1
commit()

自定义克隆函数

¥Custom Clone Function

要使用全特性或自定义克隆函数，你可以通过 clone 选项进行设置。

¥To use a full featured or custom clone function, you can set up via the clone options.

例如，使用 structuredClone：

¥For example, using structuredClone:

import { useManualRefHistory } from '@vueuse/core'

const refHistory = useManualRefHistory(target, { clone: structuredClone })

或者使用 洛达什的 cloneDeep：

¥Or by using lodash's cloneDeep:

import { useManualRefHistory } from '@vueuse/core'
import { cloneDeep } from 'lodash-es'

const refHistory = useManualRefHistory(target, { clone: cloneDeep })

或者更轻量的 klona：

¥Or a more lightweight klona:

import { useManualRefHistory } from '@vueuse/core'
import { klona } from 'klona'

const refHistory = useManualRefHistory(target, { clone: klona })

自定义转储和解析函数

¥Custom Dump and Parse Function

你可以传递自定义函数来控制序列化和解析，而不是使用 clone 选项。如果你不需要历史值作为对象，这可以在撤消时节省额外的克隆。例如，如果你希望将快照字符串化以保存到本地存储，那么它也很有用。

¥Instead of using the clone options, you can pass custom functions to control the serialization and parsing. In case you do not need history values to be objects, this can save an extra clone when undoing. It is also useful in case you want to have the snapshots already stringified to be saved to local storage for example.

import { useManualRefHistory } from '@vueuse/core'

const refHistory = useManualRefHistory(target, {
  dump: JSON.stringify,
  parse: JSON.parse,
})

历史容量

¥History Capacity

我们将默认保留所有历史记录（无限制），直到你明确清除它们为止，你可以通过 capacity 选项设置要保留的最大历史记录量。

¥We will keep all the history by default (unlimited) until you explicitly clear them up, you can set the maximal amount of history to be kept by capacity options.

const refHistory = useManualRefHistory(target, {
  capacity: 15, // limit to 15 history records
})

refHistory.clear() // explicitly clear all the history

类型声明

显示类型声明

export interface UseRefHistoryRecord<T> {
  snapshot: T
  timestamp: number
}
export interface UseManualRefHistoryOptions<Raw, Serialized = Raw> {
  /**
   * Maximum number of history to be kept. Default to unlimited.
   */
  capacity?: number
  /**
   * Clone when taking a snapshot, shortcut for dump: JSON.parse(JSON.stringify(value)).
   * Default to false
   *
   * @default false
   */
  clone?: boolean | CloneFn<Raw>
  /**
   * Serialize data into the history
   */
  dump?: (v: Raw) => Serialized
  /**
   * Deserialize data from the history
   */
  parse?: (v: Serialized) => Raw
  /**
   * set data source
   */
  setSource?: (source: Ref<Raw>, v: Raw) => void
}
export interface UseManualRefHistoryReturn<Raw, Serialized> {
  /**
   * Bypassed tracking ref from the argument
   */
  source: Ref<Raw>
  /**
   * An array of history records for undo, newest comes to first
   */
  history: Ref<UseRefHistoryRecord<Serialized>[]>
  /**
   * Last history point, source can be different if paused
   */
  last: Ref<UseRefHistoryRecord<Serialized>>
  /**
   * Same as {@link UseManualRefHistoryReturn.history | history}
   */
  undoStack: Ref<UseRefHistoryRecord<Serialized>[]>
  /**
   * Records array for redo
   */
  redoStack: Ref<UseRefHistoryRecord<Serialized>[]>
  /**
   * A ref representing if undo is possible (non empty undoStack)
   */
  canUndo: ComputedRef<boolean>
  /**
   * A ref representing if redo is possible (non empty redoStack)
   */
  canRedo: ComputedRef<boolean>
  /**
   * Undo changes
   */
  undo: () => void
  /**
   * Redo changes
   */
  redo: () => void
  /**
   * Clear all the history
   */
  clear: () => void
  /**
   * Create a new history record
   */
  commit: () => void
  /**
   * Reset ref's value with latest history
   */
  reset: () => void
}
/**
 * Track the change history of a ref, also provides undo and redo functionality.
 *
 * @see https://vueuse.org/useManualRefHistory
 * @param source
 * @param options
 */
export declare function useManualRefHistory<Raw, Serialized = Raw>(
  source: Ref<Raw>,
  options?: UseManualRefHistoryOptions<Raw, Serialized>,
): UseManualRefHistoryReturn<Raw, Serialized>

源代码

源代码 • 示例 • 文档

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