Method _build_xml_structure

modules/xml_merger.py:353–373

构建完整的DrawIO XML结构

(self, 
                             canvas_width: int,
                             canvas_height: int,
                             sorted_fragments: List[XMLFragment])

        )
    
    def _build_xml_structure(self, 
                             canvas_width: int,
                             canvas_height: int,
                             sorted_fragments: List[XMLFragment]) -> ET.Element:
        """
        构建完整的DrawIO XML结构
        """
        # 创建基础结构
        mxfile = self._create_base_xml(canvas_width, canvas_height)
        root_elem = mxfile.find(".//root")
        
        # 添加各个片段，重新分配ID
        current_id = 2  # 0和1已被基础cell占用
        
        for fragment in sorted_fragments:
            cell = self._parse_and_update_cell(fragment.xml_content, current_id)
            if cell is not None:
                root_elem.append(cell)
                current_id += 1
        
        return mxfile
    
    def _parse_and_update_cell(self, xml_content: str, new_id: int) -> Optional[ET.Element]:
        """