Vaadin 是一个RIA的基于浏览器的富客户端的Web框架。与 JavaScript 库或者是基于浏览器插件的解决方案不同,Vaadin 包含一个服务器端的结构,主要的应用逻辑都在服务器端运行,浏览器通过 Ajax 技术跟服务器端进行交互。Vaadin 提供多种各样的UI组建,例如按钮、表格、树形列表等等,每个组件都具有事件、侦听器、数据绑定和业务逻辑等功能。

这是 Vaadin 新的里程碑版本。
该版本改进内容:
- Logging - You can now configure logging level with java.util.logging for Vaadin to get rid of unnecessary messages.
- GWT 2.1.0 - Update to the latest version of Google Web Toolkit gives you numerous features, optimizations and fixes.
- Windows (within a browser window) can now be ordered and their focus can be controlled programmatically.
- Chrome frame is now officially a supported browser. Hopefully this helps speeding up old installations of IE6.
- Text components can finally be configured to send key-presses immeately back to server
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