Component-based UI
Overview
Each UI object is represented with a component (Component). Thus, composing UI is all about assembling components. To alert UI is all about modifying the states and relationship of components.
For example, as shown below, we declared a Window component, enabled the border (border="normal"), and set its width to a definite 250 pixels. Enclosed in the Window are two Button components.
As shown, there are two ways to declare UI: XML-based approach and pure-Java approach. Furthermore, you could mix them if you like.
Desktop, Page and Component
A page is a collections of components. Only components attached to a page are available at the client. They are removed when they are detached from a page. A page represents a portion of the browser window. A page is created automatically when ZK Loader loads a ZUML page or calls a richlet (Richlet.service(Page)).
A desktop (Desktop) represents a browser window (or a tab or a frame of the browser)[1].
A desktop is also the logic scope that an application can access in a request. In other words, the application can not access components in multiple
- ↑ Under portal environment, there might be multiple desktops in one browser window. However, it is really important in the developer's viewpoint.
Version History
Last Update : 2010/11/3
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