用户界面的可变状态模型及实现

CHANGEABLE STATE MODEL OF USER INTERFACE AND ITS IMPLEMENTATION

ＯＰＥ模型是一种较好的用户界面模型，它用面向对象的方法将弹出式状态转换网络模型和事件处理器模型有机地结合起来，使用户界面的设计、实现变得相当规范和容易。本文在简单地介绍了ＯＰＥ模型后，针对ＯＰＥ在描述层次菜单时需要较多的状态转换规则的问题，提出了可变状态的概念，并将此概念引入了微机版ＵＩＭＳ系统——Ｆａｓｔｏｏｌ中（Ｆａｓｔｏｏｌ是ＯＰＥ模型一个特例的实现），使Ｆａｓｔｏｏｌ在被用来描述层次菜单时更简便。

OPE is a good user interface model, which combines Pop Up State Transition Network model with Event Handler model using object oriented technology. With OPE model, it becomes easy and normal to develop user interface. After simply introducing OPE model, this paper presents a new concept: changeable state in order to solve the problem that too many States, Actions and Rules are needed when user describes global hierarchical menu using OPE model. This concept has been applied into Fastool on PC, which make it easier to describe user interface. The description model and inner control model of changeable state is also presented completely in this paper.