The Design And Application Of The Tree Navigation Structure Editor

With the development and application of the computer technology, multimedia technology is more and more applied in the modern classroom teaching, and the multimedia courseware has become very commom. The common methods are PowerPoint and Web page based on buttons. The most important is that they are both use the tree navigation mode. The tree navigation has achieved the tree structure of the directory navigation, it can collapse the navigation bar and expand the navigation bar, it can also meet many other needs of users. Therefore, the tree navigation method is increasingly favored by developers.This paper analyzes the current development of the tree navigation technology and the practical features of the multimedia courseware, then it designs and develops the tree navigation structure editor on the basis of the tree navigation, and this paper produces the multimedia courseware, the courseware shows us the main features and performances of the editor. This paper uses the component-based technology, it designs the editor using the existing technologies such as XML, DHTMLX and JavaScript. It achieves the main functions of the catalog navigation:add nodes, delete nodes, edit nodes, drag and drop at random in order to achieve the node's position flexibly, it can also save and show the tree structure datum. This paper has made a multimedia courseware example through integrating the tree navigation structure with the layer. The function of the example includes:folding and unfolding of the layer, reduction and enlargement of the layer, and so on. It can meet the basic needs of users and provide conveniences because of the simple operation.From the design and application of the above, through the constant testing, it can conclude that:the tree navigation structure in the multimedia courseware is not only achieves some basic functions like other methods, but also achieves the dragging and editing. It makes the production of the multimedia courseware convenient, simple, and full functional while gives the user easier operation. So, the tree navigation function editor is very suitable for the application of multimedia courseware.