tmagic-editor/docs/api/editor/historyServiceEvents.md
roymondchen 0f42989ca3 refactor(editor): 统一历史栈结构,支持扩展历史类型
将 pageSteps/codeBlockState/dataSourceState 三套独立历史栈收敛为统一的 steps 结构
(按 stepType 分桶),并新增 registerStepType/setStepName/getStepName 支持自定义
扩展历史类型。同步重构 history 相关服务、组件、工具方法、测试与文档。
2026-06-23 20:14:41 +08:00

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# historyService事件
## change
- **详情:** 页面历史记录发生变化(`page` 类型 `push` / `undo` / `redo` 成功时触发;与 `code-block-history-change` / `data-source-history-change` 同构)
- **事件回调函数:** `(pageId: Id, step: StepValue) => void`
::: details 查看 StepValue 及关联类型定义
<<< @/../packages/editor/src/type.ts#StepValue{ts}
<<< @/../packages/editor/src/type.ts#BaseStepValue{ts}
<<< @/../packages/editor/src/type.ts#StepExtra{ts}
<<< @/../packages/editor/src/type.ts#HistoryOpType{ts}
<<< @/../packages/editor/src/type.ts#HistoryOpSource{ts}
<<< @/../packages/schema/src/index.ts#Id{ts}
<<< @/../packages/schema/src/index.ts#MNode{ts}
:::
:::tip
回调签名已与其它历史类型统一为 `(id, step)`。当游标处于历史栈边界(已无法继续撤销 / 重做)时 `undo` / `redo` 返回 `null`,此时不会触发该事件。
:::
## marker-change
- **详情:** 通过 [`setMarker`](./historyServiceMethods.md#setmarker) 为某个历史栈种入 `initial` 基线时触发(适用于所有类型)
- **事件回调函数:** `(id: Id, marker: StepValue, stepType: HistoryStepType) => void`
## clear
- **详情:** 调用 [`clear`](./historyServiceMethods.md#clear) 清空历史栈时触发(适用于所有类型)
- **事件回调函数:** `(id: Id | undefined, stepType: HistoryStepType) => void`
:::tip
`id` 缺省(清空 `stepType` 下全部栈)时回调的 `id` 为 `undefined`。
:::
## code-block-history-change
- **详情:** 代码块历史记录发生变化(`push('codeBlock', step, codeBlockId)` / `undo('codeBlock', id)` / `redo('codeBlock', id)` 成功时触发)
- **事件回调函数:** `(codeBlockId: Id, step: CodeBlockStepValue) => void`
::: details 查看 CodeBlockStepValue 及关联类型定义
<<< @/../packages/editor/src/type.ts#CodeBlockStepValue{ts}
<<< @/../packages/editor/src/type.ts#BaseStepValue{ts}
<<< @/../packages/editor/src/type.ts#HistoryOpSource{ts}
<<< @/../packages/schema/src/index.ts#CodeBlockContent{ts}
<<< @/../packages/schema/src/index.ts#Id{ts}
:::
:::tip
- 新增触发的 step 其 diff 项 `oldSchema` 为 `null`
- 删除触发的 step 其 diff 项 `newSchema` 为 `null`
- `undo` / `redo` 返回 `null`(边界状态)时不会触发该事件
:::
## data-source-history-change
- **详情:** 数据源历史记录发生变化(`push('dataSource', step, dataSourceId)` / `undo('dataSource', id)` / `redo('dataSource', id)` 成功时触发)
- **事件回调函数:** `(dataSourceId: Id, step: DataSourceStepValue) => void`
::: details 查看 DataSourceStepValue 及关联类型定义
<<< @/../packages/editor/src/type.ts#DataSourceStepValue{ts}
<<< @/../packages/editor/src/type.ts#BaseStepValue{ts}
<<< @/../packages/editor/src/type.ts#HistoryOpSource{ts}
<<< @/../packages/schema/src/index.ts#Id{ts}
:::
:::tip
- 新增触发的 step 其 diff 项 `oldSchema` 为 `null`
- 删除触发的 step 其 diff 项 `newSchema` 为 `null`
- `undo` / `redo` 返回 `null`(边界状态)时不会触发该事件
:::
## mark-saved
- **详情:** 调用 [`markSaved`](./historyServiceMethods.md#marksaved) 标记「已保存」记录时触发
- **事件回调函数:** `(payload: { kind: 'all' | HistoryStepType; id?: Id }) => void`
::: tip
- `markSaved(stepType)`(缺省 id)触发时 `kind` 为 `all`,无 `id`(此时 `stepType` 不生效)
- `markSaved(stepType, id)` 触发时 `kind` 为对应的 `stepType`(`page` / `codeBlock` / `dataSource` / 扩展),`id` 为目标栈 id
:::
## save-to-indexed-db
- **详情:** `saveToIndexedDB` 把历史记录写入本地 IndexedDB 成功时触发
- **事件回调函数:** `(snapshot: PersistedHistoryState) => void`
::: details 查看 PersistedHistoryState 类型定义
<<< @/../packages/editor/src/type.ts#PersistedHistoryState{ts}
<<< @/../packages/editor/src/utils/undo-redo.ts#SerializedUndoRedo{ts}
:::
## restore-from-indexed-db
- **详情:** `restoreFromIndexedDB` 从本地 IndexedDB 读取并重建历史记录成功时触发(找不到记录时不触发)
- **事件回调函数:** `(snapshot: PersistedHistoryState) => void`
::: details 查看 PersistedHistoryState 类型定义
<<< @/../packages/editor/src/type.ts#PersistedHistoryState{ts}
:::