tmagic-editor/docs/assets/api_editor_historyServiceMethods.md.B9GCvSyl.js

import{ax as i,z as a,A as l,b5 as n}from"./chunks/framework.V2ssSR2R.js";const c=JSON.parse('{"title":"historyService方法","description":"","frontmatter":{},"headers":[],"relativePath":"api/editor/historyServiceMethods.md","filePath":"api/editor/historyServiceMethods.md"}'),e={name:"api/editor/historyServiceMethods.md"};function h(t,s,p,k,d,r){return l(),a("div",null,[...s[0]||(s[0]=[n(`<h1 id="historyservice方法" tabindex="-1">historyService方法 <a class="header-anchor" href="#historyservice方法" aria-label="Permalink to “historyService方法”">​</a></h1><h2 id="reset" tabindex="-1">reset <a class="header-anchor" href="#reset" aria-label="Permalink to “reset”">​</a></h2><ul><li><p><strong>详情：</strong></p><p>重置全部历史记录（包括页面节点栈、代码块栈、数据源栈），并重置当前页面 id / canRedo / canUndo</p></li></ul><h2 id="resetpage" tabindex="-1">resetPage <a class="header-anchor" href="#resetpage" aria-label="Permalink to “resetPage”">​</a></h2><ul><li><p><strong>详情：</strong></p><p>重置当前页面的历史记录状态（清空当前页面id，重置 canRedo/canUndo）</p></li></ul><h2 id="resetstate" tabindex="-1">resetState <a class="header-anchor" href="#resetstate" aria-label="Permalink to “resetState”">​</a></h2><ul><li><p><strong>详情：</strong></p><p>重置历史记录全部内部状态（清空 pageId、pageSteps、canRedo、canUndo、codeBlockState、dataSourceState）</p></li></ul><h2 id="changepage" tabindex="-1">changePage <a class="header-anchor" href="#changepage" aria-label="Permalink to “changePage”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{MPage | MPageFragment} page</code></li></ul><details class="details custom-block"><summary>查看 MPage / MPageFragment 类型定义</summary><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> interface</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MPage</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MContainer</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 页面类型 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  type</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> NodeType</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">PAGE</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> interface</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MPageFragment</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MContainer</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 页面类型 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  type</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> NodeType</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">PAGE_FRAGMENT</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></details></li><li><p><strong>详情：</strong></p><p>按页面切换历史堆栈</p></li></ul><h2 id="push" tabindex="-1">push <a class="header-anchor" href="#push" aria-label="Permalink to “push”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{StepValue} state</code></li></ul><details class="details custom-block"><summary>查看 StepValue 及关联类型定义</summary><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> interface</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> StepValue</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 页面信息 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  data</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">name</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">; </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">id</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Id</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> };</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  opType</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> HistoryOpType</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 操作前选中的节点 ID，用于撤销后恢复选择状态 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  selectedBefore</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Id</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">[];</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 操作后选中的节点 ID，用于重做后恢复选择状态 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  selectedAfter</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Id</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">[];</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  modifiedNodeIds</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Map</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">&lt;</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">Id</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">Id</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">&gt;;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** opType &#39;add&#39;: 新增的节点 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  nodes</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MNode</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">[];</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** opType &#39;add&#39;: 父节点 ID */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  parentId</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Id</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** opType &#39;add&#39;: 每个新增节点在父节点 items 中的索引 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  indexMap</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Record</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">&lt;</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">number</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">&gt;;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** opType &#39;remove&#39;: 被删除的节点及其位置信息 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  removedItems</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">node</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MNode</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">; </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">parentId</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Id</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">; </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">index</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> number</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }[];</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /**</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   * opType &#39;update&#39;: 变更前后的节点快照</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   *</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   * \`changeRecords\` 来自 form 端的 propPath/value 列表，撤销/重做时只对这些 propPath 做局部更新；</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   * 缺省（未传 / 空数组）才退化为整节点替换。</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  updatedItems</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> { </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">oldNode</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MNode</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">; </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">newNode</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MNode</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">; </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">changeRecords</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ChangeRecord</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">[] }[];</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /**</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   * 调用方可选传入的人类可读描述（如「调整按钮颜色」），用于历史面板展示。</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   * 不影响 undo/redo 行为；缺省时面板会根据节点 / propPath 自动生成描述。</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  historyDescription</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> type</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> HistoryOpType</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;add&#39;</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;remove&#39;</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> &#39;update&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span></code></pre></div><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> type</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Id</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> number</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span></code></pre></div><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> type</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MNode</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MComponent</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MContainer</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MIteratorContainer</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MPage</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MApp</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> MPageFragment</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span></code></pre></div><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> interface</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ChangeRecord</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  propPath</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  value</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> any</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></details></li><li><p><strong>返回：</strong></p><ul><li><code>{StepValue | null}</code></li></ul></li><li><p><strong>详情：</strong></p><p>添加一条历史记录</p><div class="tip custom-block"><p class="custom-block-title custom-block-title-default">TIP</p><p><code>opType: &#39;update&#39;</code> 的每个 <code>updatedItems[i]</code> 上可携带 <code>changeRecords</code>，用于撤销 / 重做时仅按 <code>propPath</code> 局部更新对应字段，避免整节点替换冲掉同节点上的其它无关变更；不带 <code>changeRecords</code> 时退化为整节点替换（如 <code>sort</code> / <code>moveLayer</code> / 拖动等纯快照场景）。</p></div></li></ul><h2 id="undo" tabindex="-1">undo <a class="header-anchor" href="#undo" aria-label="Permalink to “undo”">​</a></h2><ul><li><p><strong>返回：</strong></p><ul><li><code>{StepValue | null}</code></li></ul></li><li><p><strong>详情：</strong></p><p>撤销当前操作。<code>opType: &#39;update&#39;</code> 时，若 <code>updatedItems[i].changeRecords</code> 存在，会按 <code>propPath</code> 从 <code>oldNode</code> 取值做局部回滚；否则用 <code>oldNode</code> 整节点替换。</p></li></ul><h2 id="redo" tabindex="-1">redo <a class="header-anchor" href="#redo" aria-label="Permalink to “redo”">​</a></h2><ul><li><p><strong>返回：</strong></p><ul><li><code>{StepValue | null}</code></li></ul></li><li><p><strong>详情：</strong></p><p>恢复到下一步。<code>opType: &#39;update&#39;</code> 时，若 <code>updatedItems[i].changeRecords</code> 存在，会按 <code>propPath</code> 从 <code>newNode</code> 取值做局部重做；否则用 <code>newNode</code> 整节点替换。</p></li></ul><h2 id="pushcodeblock" tabindex="-1">pushCodeBlock <a class="header-anchor" href="#pushcodeblock" aria-label="Permalink to “pushCodeBlock”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{Id} codeBlockId</code> 代码块 id</li><li><code>{Object} payload</code><ul><li><code>{CodeBlockContent | null} oldContent</code> 变更前的代码块内容；新增时为 <code>null</code></li><li><code>{CodeBlockContent | null} newContent</code> 变更后的代码块内容；删除时为 <code>null</code></li><li><code>{ChangeRecord[]} changeRecords</code> 可选；form 端 propPath/value 变更列表，撤销/重做时若有则按 propPath 局部更新；缺省（或空数组）才退化为整内容替换</li></ul></li></ul><details class="details custom-block"><summary>查看 CodeBlockStepValue 及关联类型定义</summary><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">/**</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> * 代码块历史记录条目。按 codeBlock.id 分组保存到 historyState.codeBlockState。</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> * - 新增：oldContent = null，newContent = 新内容</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> * - 更新：oldContent / newContent 都为对应内容</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> * - 删除：newContent = null，oldContent = 删除前内容</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> */</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> interface</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> CodeBlockStepValue</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 关联的代码块 id */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  id</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Id</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 变更前的代码块内容，新增时为 null */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  oldContent</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> CodeBlockContent</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> null</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 变更后的代码块内容，删除时为 null */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  newContent</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> CodeBlockContent</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> null</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /**</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   * form 端 propPath/value 列表。撤销/重做时若有则按 propPath 局部更新；</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   * 缺省才退化为整内容替换。新增/删除场景通常无 changeRecords。</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  changeRecords</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ChangeRecord</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">[];</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 调用方可选传入的人类可读描述，用于历史面板展示；不影响 undo/redo 行为。 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  historyDescription</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> interface</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> CodeBlockContent</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 代码块名称 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  name</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 代码块内容 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  content</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> ((</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">...</span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">args</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> any</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">[]) </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=&gt;</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> any</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">|</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Function</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 参数定义 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  params</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> CodeParam</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">[] </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">|</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> [];</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 注释 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  desc</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 扩展字段 */</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">  [</span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">propName</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">]</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> any</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> interface</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ChangeRecord</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  propPath</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  value</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> any</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></details></li><li><p><strong>返回：</strong></p><ul><li><code>{CodeBlockStepValue | null}</code> 入栈失败（未传 id）时返回 <code>null</code></li></ul></li><li><p><strong>详情：</strong></p><p>推入一条代码块变更记录。与页面 / 节点完全无关，按 <code>codeBlockId</code> 维度独立一份 <code>UndoRedo</code> 栈， 栈实例存放在 <code>historyService.state.codeBlockState[codeBlockId]</code>。</p><p>入栈成功后会触发 <code>code-block-history-change</code> 事件。</p><div class="tip custom-block"><p class="custom-block-title custom-block-title-default">TIP</p><p><code>codeBlockService.setCodeDslByIdSync</code> 与 <code>codeBlockService.deleteCodeDslByIds</code> 内部已经 自动调用本方法，业务代码通常无需手动调用。</p></div></li></ul><h2 id="undocodeblock" tabindex="-1">undoCodeBlock <a class="header-anchor" href="#undocodeblock" aria-label="Permalink to “undoCodeBlock”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{Id} codeBlockId</code></li></ul></li><li><p><strong>返回：</strong></p><ul><li><code>{CodeBlockStepValue | null}</code> 栈不存在或已无可撤销记录时返回 <code>null</code></li></ul></li><li><p><strong>详情：</strong></p><p>撤销指定代码块的最近一次变更。成功时会触发 <code>code-block-history-change</code> 事件。 拿到 step 后由调用方根据 <code>step.oldContent</code> 写回 <code>codeBlockService</code>（本方法不会自动回放）。</p></li></ul><h2 id="redocodeblock" tabindex="-1">redoCodeBlock <a class="header-anchor" href="#redocodeblock" aria-label="Permalink to “redoCodeBlock”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{Id} codeBlockId</code></li></ul></li><li><p><strong>返回：</strong></p><ul><li><code>{CodeBlockStepValue | null}</code> 栈不存在或已无可重做记录时返回 <code>null</code></li></ul></li><li><p><strong>详情：</strong></p><p>重做指定代码块的下一次变更。成功时会触发 <code>code-block-history-change</code> 事件。</p></li></ul><h2 id="canundocodeblock" tabindex="-1">canUndoCodeBlock <a class="header-anchor" href="#canundocodeblock" aria-label="Permalink to “canUndoCodeBlock”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{Id} codeBlockId</code></li></ul></li><li><p><strong>返回：</strong></p><ul><li><code>{boolean}</code></li></ul></li><li><p><strong>详情：</strong></p><p>指定代码块当前是否可撤销。栈不存在时返回 <code>false</code>。</p></li></ul><h2 id="canredocodeblock" tabindex="-1">canRedoCodeBlock <a class="header-anchor" href="#canredocodeblock" aria-label="Permalink to “canRedoCodeBlock”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{Id} codeBlockId</code></li></ul></li><li><p><strong>返回：</strong></p><ul><li><code>{boolean}</code></li></ul></li><li><p><strong>详情：</strong></p><p>指定代码块当前是否可重做。栈不存在时返回 <code>false</code>。</p></li></ul><h2 id="pushdatasource" tabindex="-1">pushDataSource <a class="header-anchor" href="#pushdatasource" aria-label="Permalink to “pushDataSource”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{Id} dataSourceId</code> 数据源 id</li><li><code>{Object} payload</code><ul><li><code>{DataSourceSchema | null} oldSchema</code> 变更前的数据源 schema；新增时为 <code>null</code></li><li><code>{DataSourceSchema | null} newSchema</code> 变更后的数据源 schema；删除时为 <code>null</code></li><li><code>{ChangeRecord[]} changeRecords</code> 可选；form 端 propPath/value 变更列表，撤销/重做时若有则按 propPath 局部更新；缺省（或空数组）才退化为整 schema 替换</li></ul></li></ul><details class="details custom-block"><summary>查看 DataSourceStepValue 及关联类型定义</summary><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">/**</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> * 数据源历史记录条目。按 dataSource.id 分组保存到 historyState.dataSourceState。</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> * - 新增：oldSchema = null，newSchema = 新 schema</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> * - 更新：oldSchema / newSchema 都为对应 schema</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> * - 删除：newSchema = null，oldSchema = 删除前 schema</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> */</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> interface</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> DataSourceStepValue</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 关联的数据源 id */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  id</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> Id</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 变更前的数据源 schema，新增时为 null */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  oldSchema</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> DataSourceSchema</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> null</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 变更后的数据源 schema，删除时为 null */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  newSchema</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> DataSourceSchema</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> |</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> null</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /**</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   * form 端 propPath/value 列表。撤销/重做时若有则按 propPath 局部更新；</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   * 缺省才退化为整 schema 替换。新增/删除场景通常无 changeRecords。</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">   */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  changeRecords</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ChangeRecord</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">[];</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">  /** 调用方可选传入的人类可读描述，用于历史面板展示；不影响 undo/redo 行为。 */</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  historyDescription</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><div class="language-ts"><button title="Copy Code" class="copy"></button><span class="lang">ts</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">export</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> interface</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ChangeRecord</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  propPath</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">?:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> string</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">  value</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> any</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></details></li><li><p><strong>返回：</strong></p><ul><li><code>{DataSourceStepValue | null}</code> 入栈失败（未传 id）时返回 <code>null</code></li></ul></li><li><p><strong>详情：</strong></p><p>推入一条数据源变更记录。与页面 / 节点完全无关，按 <code>dataSourceId</code> 维度独立一份 <code>UndoRedo</code> 栈， 栈实例存放在 <code>historyService.state.dataSourceState[dataSourceId]</code>。</p><p>入栈成功后会触发 <code>data-source-history-change</code> 事件。</p><div class="tip custom-block"><p class="custom-block-title custom-block-title-default">TIP</p><p><code>dataSourceService.add</code> / <code>update</code> / <code>remove</code> 内部已经自动调用本方法，业务代码通常无需手动调用。</p></div></li></ul><h2 id="undodatasource" tabindex="-1">undoDataSource <a class="header-anchor" href="#undodatasource" aria-label="Permalink to “undoDataSource”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{Id} dataSourceId</code></li></ul></li><li><p><strong>返回：</strong></p><ul><li><code>{DataSourceStepValue | null}</code></li></ul></li><li><p><strong>详情：</strong></p><p>撤销指定数据源的最近一次变更。成功时会触发 <code>data-source-history-change</code> 事件。 拿到 step 后由调用方根据 <code>step.oldSchema</code> 写回 <code>dataSourceService</code>（本方法不会自动回放）。</p></li></ul><h2 id="redodatasource" tabindex="-1">redoDataSource <a class="header-anchor" href="#redodatasource" aria-label="Permalink to “redoDataSource”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{Id} dataSourceId</code></li></ul></li><li><p><strong>返回：</strong></p><ul><li><code>{DataSourceStepValue | null}</code></li></ul></li><li><p><strong>详情：</strong></p><p>重做指定数据源的下一次变更。成功时会触发 <code>data-source-history-change</code> 事件。</p></li></ul><h2 id="canundodatasource" tabindex="-1">canUndoDataSource <a class="header-anchor" href="#canundodatasource" aria-label="Permalink to “canUndoDataSource”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{Id} dataSourceId</code></li></ul></li><li><p><strong>返回：</strong></p><ul><li><code>{boolean}</code></li></ul></li><li><p><strong>详情：</strong></p><p>指定数据源当前是否可撤销。栈不存在时返回 <code>false</code>。</p></li></ul><h2 id="canredodatasource" tabindex="-1">canRedoDataSource <a class="header-anchor" href="#canredodatasource" aria-label="Permalink to “canRedoDataSource”">​</a></h2><ul><li><p><strong>参数：</strong></p><ul><li><code>{Id} dataSourceId</code></li></ul></li><li><p><strong>返回：</strong></p><ul><li><code>{boolean}</code></li></ul></li><li><p><strong>详情：</strong></p><p>指定数据源当前是否可重做。栈不存在时返回 <code>false</code>。</p></li></ul><h2 id="destroy" tabindex="-1">destroy <a class="header-anchor" href="#destroy" aria-label="Permalink to “destroy”">​</a></h2><ul><li><p><strong>详情：</strong></p><p>销毁</p></li></ul>`,37)])])}const g=i(e,[["render",h]]);export{c as __pageData,g as default};