def refresh(self, win=None):
self.win.clear()
self.win.b[0] = "FrainUI"
Item.nodes = {}
self.FREventEmit("ListReFreshPre")
Item.clear() # 在刷新的时候, 把旧的所有 nodes 释放掉
self.root = node.Node("root", None, self.get_roots)
self.root.node_open()
if self.Title:
self.settitle(self.Title)
#self.LS_Refresh_Hook()
self.FREventEmit("ListReFreshPost")
self.nu_refresh += 1
