Method exitCodeBlock

src/core/nodeviews/code-block.ts:1570–1606

* 跳出代码块

(direction: 1 | -1)

   * 跳出代码块
   */
  private exitCodeBlock(direction: 1 | -1): void {
    const pos = this.getPos();
    if (pos === undefined) return;

    const { state } = this.view;
    const nodeEnd = pos + this.node.nodeSize;

    if (direction === 1) {
      const isLastNode = nodeEnd >= state.doc.content.size;

      if (isLastNode) {
        const paragraph = state.schema.nodes.paragraph.create();
        const tr = state.tr.insert(nodeEnd, paragraph);
        tr.setSelection(TextSelection.create(tr.doc, nodeEnd + 1));
        this.view.dispatch(tr);
        this.view.focus();
        return;
      }

      const selection = Selection.near(state.doc.resolve(nodeEnd), 1);
      this.view.dispatch(state.tr.setSelection(selection));
      this.view.focus();
    } else {
      const selection = Selection.near(state.doc.resolve(pos), -1);
      // 如果找到的选区不在代码块之前，说明前方无可用位置，需创建段落
      if (selection.from >= pos) {
        const paragraph = state.schema.nodes.paragraph.create();
        const tr = state.tr.insert(pos, paragraph);
        tr.setSelection(TextSelection.create(tr.doc, pos + 1));
        this.view.dispatch(tr);
        this.view.focus();
        return;
      }
      this.view.dispatch(state.tr.setSelection(selection));
      this.view.focus();
    }
  }

  /**
   * 跳出代码块并创建新的列表项