说明：  基本实现了 左边一颗表格树，当展开时候甘特图也展开，关闭时甘特图也关闭，而且横向进度可以左右移动，扩大缩小，连接线 也根据位置自动变换连接 当子进度移动或扩大时，父进度也跟着放大缩小移动，根据XML 文件配置整个甘特图，点击列头时候， 自动拉伸
(Form the basic realization of a tree on the left, when you expand it also launched a Gantt chart, Gantt chart when you close it off, but you can move around laterally progress, expanding shrink cable connection also automatically change according to the position of the child progress when moving or expanding When the father also followed the progress of Zoom Mobile, configure the entire XML document based on a Gantt chart, click on the column header when automatic stretch)