feat: single AI action button with inline prompt; replace cell source

src/__tests__/opencode_cell_actions.spec.ts

@@ -1,12 +1,12 @@
 /**
- * Unit tests for OpenCodeCellActions DOM rendering and button disabled states.
+ * Unit tests for OpenCodeCellActions (single AI button) and OpenCodeInlinePrompt
+ * (inline input panel inside the cell).
  *
  * Mocks @jupyterlab/cells, @jupyterlab/apputils, and @lumino/widgets at the
- * test boundary so the real ESM packages are not loaded (Jest + pnpm can't
- * transform the hoisted @jupyterlab/* packages out of the box).
+ * test boundary so the real ESM packages are not loaded.
  */
 jest.mock('@jupyterlab/cells', () => ({
-  CodeCell: class CodeCell {}
+  CodeCell: class CodeCell { public node = document.createElement('div'); }
 }));
 
 jest.mock('@jupyterlab/apputils', () => ({
@@ -32,12 +32,22 @@ jest.mock('@lumino/widgets', () => {
     }
     public dispose(): void {
       this._isDisposed = true;
+      if (this.node.parentElement) {
+        this.node.parentElement.removeChild(this.node);
+      }
+    }
+    public onAfterAttach(msg: any): void {
+      // no-op for tests
+    }
+    public static attach(widget: Widget, host: HTMLElement): void {
+      host.appendChild(widget.node);
     }
   }
   return { Widget };
 });
 
 import { OpenCodeCellActions } from '../components/opencode_cell_actions';
+import { OpenCodeInlinePrompt } from '../components/opencode_inline_prompt';
 import { CodeCell } from '@jupyterlab/cells';
 
 function makeFakeOutputs(items: any[]): any {
@@ -62,7 +72,8 @@ function makeFakeCell(
     id: 'cell-test',
     type: 'code',
     sharedModel: {
-      getSource: () => source
+      getSource: () => source,
+      setSource: jest.fn()
     },
     outputs: makeFakeOutputs(errorOutputs),
     contentChanged: { connect: jest.fn(), disconnect: jest.fn() },
@@ -71,8 +82,6 @@ function makeFakeCell(
   const cell = new (CodeCell as unknown as new () => CodeCell)();
   (cell as any).model = model;
 
-  // Parent chain: cell -> notebook -> panel (mirrors real JupyterLab, where
-  // the cell's grandparent Notebook matches the duck-typed panel lookup).
   const notebook: any = { widgets: [] as CodeCell[] };
   const panel: any = {
     context: { path: notebookPath },
@@ -103,61 +112,56 @@ function makeFakeCell(
 }
 
 describe('OpenCodeCellActions', () => {
-  it('renders 3 buttons with the expected labels', () => {
+  it('renders a single AI button (not 3 buttons)', () => {
     const cell = makeFakeCell('x = 1');
     const actions = new OpenCodeCellActions(cell);
     const btns = actions.node.querySelectorAll('button');
-    expect(btns.length).toBe(3);
-    expect(btns[0].textContent).toBe('✨ 优化');
-    expect(btns[1].textContent).toBe('🐛 排错');
-    expect(btns[2].textContent).toBe('🪄 编辑');
+    expect(btns.length).toBe(1);
+    expect(btns[0].textContent).toContain('🪄');
   });
 
-  it('disables all buttons when the notebook panel cannot be resolved', () => {
+  it('disables the button when notebook panel cannot be resolved', () => {
     const cell = new (CodeCell as unknown as new () => CodeCell)();
     (cell as any).model = {
       id: 'orphan',
       type: 'code',
-      sharedModel: { getSource: () => 'x = 1' },
+      sharedModel: { getSource: () => 'x = 1', setSource: jest.fn() },
       outputs: makeFakeOutputs([]),
       contentChanged: { connect: jest.fn(), disconnect: jest.fn() },
       stateChanged: { connect: jest.fn(), disconnect: jest.fn() }
     };
-    // No parent chain: extractCellContextFromCell must return null.
     const actions = new OpenCodeCellActions(cell);
-    const btns = actions.node.querySelectorAll('button');
-    btns.forEach((b: HTMLButtonElement) => {
-      expect(b.disabled).toBe(true);
-    });
+    const btn = actions.node.querySelector('button') as HTMLButtonElement;
+    expect(btn.disabled).toBe(true);
   });
 
-  it('enables optimize and edit; fix stays disabled without an error', () => {
-    const cell = makeFakeCell('x = 1', [], 'foo.ipynb', 0, 1);
+  it('clicking the button attaches an OpenCodeInlinePrompt to the cell', () => {
+    const cell = makeFakeCell('x = 1');
     const actions = new OpenCodeCellActions(cell);
-    const btns = actions.node.querySelectorAll('button');
-    expect((btns[0] as HTMLButtonElement).disabled).toBe(false);
-    expect((btns[1] as HTMLButtonElement).disabled).toBe(true);
-    expect((btns[2] as HTMLButtonElement).disabled).toBe(false);
+    // Attach actions to cell so it can resolve parent chain
+    Object.defineProperty(actions, 'parent', { value: cell, configurable: true });
+    (actions as any).onAfterAttach({} as any);
+
+    const btn = actions.node.querySelector('button') as HTMLButtonElement;
+    btn.click();
+
+    const prompt = cell.node.querySelector(
+      '.opencode-inline-prompt'
+    ) as HTMLElement;
+    expect(prompt).not.toBeNull();
   });
 
-  it('enables the fix button when the cell has an error output', () => {
-    const cell = makeFakeCell(
-      '1/0',
-      [
-        {
-          type: 'error',
-          ename: 'ZeroDivisionError',
-          evalue: 'div by zero',
-          traceback: []
-        }
-      ],
-      'foo.ipynb',
-      0,
-      1
-    );
+  it('clicking the button twice detaches the inline prompt', () => {
+    const cell = makeFakeCell('x = 1');
     const actions = new OpenCodeCellActions(cell);
-    const btns = actions.node.querySelectorAll('button');
-    expect((btns[1] as HTMLButtonElement).disabled).toBe(false);
+    Object.defineProperty(actions, 'parent', { value: cell, configurable: true });
+    (actions as any).onAfterAttach({} as any);
+
+    const btn = actions.node.querySelector('button') as HTMLButtonElement;
+    btn.click();
+    btn.click();
+    const prompt = cell.node.querySelector('.opencode-inline-prompt');
+    expect(prompt).toBeNull();
   });
 
   it('disconnects model signals on dispose', () => {
@@ -169,3 +173,16 @@ describe('OpenCodeCellActions', () => {
     expect(model.stateChanged.disconnect).toHaveBeenCalled();
   });
 });
+
+describe('OpenCodeInlinePrompt', () => {
+  it('renders a textarea, a send and a cancel button', () => {
+    const cell = makeFakeCell('x = 1');
+    const prompt = new OpenCodeInlinePrompt(cell, {
+      onSubmit: jest.fn(),
+      onCancel: jest.fn(),
+      disabled: false
+    });
+    expect(prompt.node.querySelector('textarea')).not.toBeNull();
+    expect(prompt.node.querySelectorAll('button').length).toBe(2);
+  });
+});

src/components/opencode_cell_actions.ts

@@ -1,10 +1,13 @@
 /**
- * Per-cell actions widget rendered inside JupyterLab's native Cell toolbar
- * (top-right of the active cell, next to the move up/down buttons).
+ * Per-cell AI action button rendered inside JupyterLab's native Cell toolbar
+ * (top-right of the active cell). v2: a single icon button. Clicking it
+ * toggles an OpenCodeInlinePrompt panel attached to the cell's DOM.
  *
- * Registered in index.ts via IToolbarWidgetRegistry.addFactory('Cell', ...);
- * the toolbar factory passes the owning Cell, so the cell arrives via the
- * constructor instead of being resolved from `this.parent` on attach.
+ * Registered in index.ts via IToolbarWidgetRegistry.addFactory('Cell', ...).
+ *
+ * The frontend does NO semantic processing: it gathers the cell's source /
+ * outputs / error, attaches the user's freeform instruction, and POSTs to
+ * the server. The server (and the LLM it forwards to) decides what to do.
  */
 import type { CodeCell } from '@jupyterlab/cells';
 import { Notification } from '@jupyterlab/apputils';
@@ -16,12 +19,13 @@ import { callOpenCodeEdit } from '../api/opencode_client';
 import { extractCellContext } from '../context/cell_context';
 import type {
   CellContext,
-  OpenCodeMode,
   OpenCodeRequest,
   OpenCodeResponse,
   OpenCodeSettings
 } from '../types';
 
+import { OpenCodeInlinePrompt } from './opencode_inline_prompt';
+
 // Module-level runtime injection (set by index.ts after settings load).
 let _settings: OpenCodeSettings | null = null;
 let _serverSettings: ServerConnection.ISettings | null = null;
@@ -40,6 +44,7 @@ export class OpenCodeCellActions extends Widget {
   private _cell: CodeCell;
   private _context: CellContext | null = null;
   private _status: Status = 'idle';
+  private _prompt: OpenCodeInlinePrompt | null = null;
 
   constructor(cell: CodeCell) {
     super();
@@ -47,6 +52,7 @@ export class OpenCodeCellActions extends Widget {
     this.addClass('opencode-cell-actions');
     this._cell.model.contentChanged.connect(this._onModelChange, this);
     this._cell.model.stateChanged.connect(this._onModelChange, this);
+    this._render();
     this._onModelChange();
   }
 
@@ -56,48 +62,71 @@ export class OpenCodeCellActions extends Widget {
     }
     this._cell.model.contentChanged.disconnect(this._onModelChange, this);
     this._cell.model.stateChanged.disconnect(this._onModelChange, this);
+    this._hidePrompt();
     super.dispose();
   }
 
   private _onModelChange(): void {
     this._context = extractCellContextFromCell(this._cell);
-    this._render();
+    if (this._prompt) {
+      this._prompt.setDisabled(!this._context || this._status === 'loading');
+    } else {
+      this._render();
+    }
   }
 
   private _render(): void {
     const node = this.node;
     node.textContent = '';
 
-    const hasError = !!this._context?.error;
-    const loading = this._status === 'loading';
-    const baseDisabled = !this._context || loading;
+    const baseDisabled = !this._context || this._status === 'loading';
 
-    const mkBtn = (
-      label: string,
-      mode: OpenCodeMode,
-      disabled: boolean
-    ): HTMLButtonElement => {
-      const b = document.createElement('button');
-      b.className = `opencode-btn opencode-btn-${mode}`;
-      b.textContent = label;
-      b.disabled = disabled;
-      b.title = disabled
-        ? loading
-          ? 'OpenCode: 请求中…'
-          : 'OpenCode: 等待 cell 上下文…'
-        : label;
-      b.addEventListener('click', () => {
-        void this._onClick(mode);
-      });
-      return b;
-    };
-
-    node.appendChild(mkBtn('✨ 优化', 'optimize', baseDisabled));
-    node.appendChild(mkBtn('🐛 排错', 'fix', baseDisabled || !hasError));
-    node.appendChild(mkBtn('🪄 编辑', 'edit', baseDisabled));
+    const btn = document.createElement('button');
+    btn.className = 'opencode-btn opencode-btn-ai';
+    btn.textContent = '🪄 AI 智能编辑';
+    btn.disabled = baseDisabled;
+    btn.title = baseDisabled
+      ? 'OpenCode: 等待 cell 上下文…'
+      : '让 AI 修改这个 cell 的代码';
+    btn.addEventListener('click', () => {
+      this._togglePrompt();
+    });
+    node.appendChild(btn);
   }
 
-  private async _onClick(mode: OpenCodeMode): Promise<void> {
+  private _togglePrompt(): void {
+    if (this._prompt) {
+      this._hidePrompt();
+    } else {
+      this._showPrompt();
+    }
+  }
+
+  private _showPrompt(): void {
+    if (this._prompt) {
+      return;
+    }
+    const prompt = new OpenCodeInlinePrompt(this._cell, {
+      disabled: !this._context || this._status === 'loading',
+      onSubmit: (text: string) => {
+        void this._onSubmit(text);
+      },
+      onCancel: () => {
+        this._hidePrompt();
+      }
+    });
+    Widget.attach(prompt, this._cell.node);
+    this._prompt = prompt;
+  }
+
+  private _hidePrompt(): void {
+    if (this._prompt) {
+      this._prompt.dispose();
+      this._prompt = null;
+    }
+  }
+
+  private async _onSubmit(text: string): Promise<void> {
     if (!this._context) {
       return;
     }
@@ -106,46 +135,42 @@ export class OpenCodeCellActions extends Widget {
       return;
     }
 
-    let prompt = '';
-    if (mode === 'edit') {
-      const input = window.prompt('请输入编辑指令：');
-      if (input === null) {
-        return;
-      }
-      prompt = input;
-    }
-
     const request: OpenCodeRequest = {
-      mode,
-      prompt,
+      prompt: text,
       context: this._context,
       providerId: _settings.opencodeProvider || undefined,
       modelId: _settings.opencodeModel || undefined
     };
 
     this._status = 'loading';
-    this._render();
+    if (this._prompt) {
+      this._prompt.setDisabled(true);
+    }
 
     try {
       const resp = await callOpenCodeEdit(request, _serverSettings);
       this._handleResponse(resp);
     } catch (e) {
       this._status = 'idle';
-      this._render();
-      Notification.error(`OpenCode ${mode} 失败: ${(e as Error).message}`);
+      if (this._prompt) {
+        this._prompt.setDisabled(false);
+      }
+      Notification.error(`OpenCode 失败: ${(e as Error).message}`);
     }
   }
 
   private _handleResponse(resp: OpenCodeResponse): void {
     this._status = 'idle';
-    this._render();
     if (resp.ok) {
-      const len = resp.finalSource.length;
+      this._cell.model.sharedModel.setSource(resp.finalSource);
       Notification.info(
-        `OpenCode ${resp.mode} 完成 (${len} chars). ` +
-          `Diff 面板将在 Slice 4 中提供。Session: ${resp.sessionId.slice(0, 8)}…`
+        `OpenCode 完成 (${resp.finalSource.length} chars). Session: ${resp.sessionId.slice(0, 8)}…`
       );
+      this._hidePrompt();
     } else {
+      if (this._prompt) {
+        this._prompt.setDisabled(false);
+      }
       Notification.error(`OpenCode 错误: ${resp.error}`);
     }
   }
@@ -153,14 +178,12 @@ export class OpenCodeCellActions extends Widget {
 
 /**
  * Resolve a CodeCell's parent NotebookPanel by walking the parent chain,
- * then build the CellContext. (Unchanged from the old footer helper; the
- * `Widget.findParent` helper was removed in @lumino/widgets 2.x.)
+ * then build the CellContext.
  */
 function extractCellContextFromCell(cell: CodeCell): CellContext | null {
   let node: Widget | null = cell.parent;
   let notebookPanel: NotebookPanel | null = null;
   while (node) {
-    // Use duck-typing: a notebook panel has `context.path` and `content.widgets`.
     const candidate = node as any;
     if (
       candidate.context &&

src/components/opencode_inline_prompt.ts

@@ -0,0 +1,59 @@
+/**
+ * Inline prompt widget attached to a cell's DOM when the AI button is clicked.
+ * Renders a textarea + send/cancel buttons. The owning cell is passed so
+ * we can resolve the cell context at submit time. submit/cancel are
+ * callbacks owned by OpenCodeCellActions.
+ */
+import { CodeCell } from '@jupyterlab/cells';
+import { Widget } from '@lumino/widgets';
+
+export interface IOpenCodeInlinePromptOptions {
+  onSubmit: (text: string) => void;
+  onCancel: () => void;
+  disabled: boolean;
+}
+
+export class OpenCodeInlinePrompt extends Widget {
+  private _textarea: HTMLTextAreaElement;
+  private _sendBtn: HTMLButtonElement;
+  private _cancelBtn: HTMLButtonElement;
+
+  constructor(
+    _cell: CodeCell,
+    options: IOpenCodeInlinePromptOptions
+  ) {
+    super();
+    this.addClass('opencode-inline-prompt');
+    this._textarea = document.createElement('textarea');
+    this._textarea.placeholder = '向 AI 描述你想要的修改…';
+    this._textarea.rows = 3;
+    this._sendBtn = document.createElement('button');
+    this._sendBtn.className = 'opencode-btn-send';
+    this._sendBtn.textContent = '🚀 发送';
+    this._sendBtn.disabled = options.disabled;
+    this._sendBtn.addEventListener('click', () => {
+      const text = this._textarea.value;
+      if (text.trim()) {
+        options.onSubmit(text);
+      }
+    });
+    this._cancelBtn = document.createElement('button');
+    this._cancelBtn.className = 'opencode-btn-cancel';
+    this._cancelBtn.textContent = '✕ 取消';
+    this._cancelBtn.addEventListener('click', () => {
+      options.onCancel();
+    });
+
+    const actions = document.createElement('div');
+    actions.className = 'opencode-inline-actions';
+    actions.appendChild(this._sendBtn);
+    actions.appendChild(this._cancelBtn);
+
+    this.node.appendChild(this._textarea);
+    this.node.appendChild(actions);
+  }
+
+  setDisabled(disabled: boolean): void {
+    this._sendBtn.disabled = disabled;
+  }
+}