Book Image

ExtGWT Rich Internet Application Cookbook

By : Odili Charles Opute , Oded Nissan
Book Image

ExtGWT Rich Internet Application Cookbook

By: Odili Charles Opute , Oded Nissan

Overview of this book

<p>Get ready to build the next generation Gmail, Facebook, or Meebo, with HTML5 and Server Push, taking advantage of the power and versatility of Java with ExtGWT. Sencha Ext GWT takes GWT to the next level, giving you high-performance widgets, feature-rich templates and layouts, advanced charting, data loaders and stores,&nbsp; accessibility, and much more.<br /><br /><i>ExtGWT Rich Internet Application Cookbook will teach you to quickly build&nbsp; stunning functionality into your own apps with ExtGWT</i>.<br /><br />This is a catalog of practical solutions to get your ExtGWT web app up and running in no time, with tips for persistence and best practices. You begin by playing with panels, windows, and tabs, to learn the essentials. Next, you engage yourself with forms, buttons, toolbars and menus to build on further. Dealing with the UI and the trees will follow to help you make stunning user interfaces. Then you will be taught to work with Listview, Views, and Gridpanels, the more complex problems. The book will then deal with charts, visualization, and drag and drop to take you to the next level. Finally, you will wind up with serialization, persistence, and custom theming. Now, you are an expert!</p>
Table of Contents (22 chapters)
ExtGWT Rich Internet Application Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Event Handling — Making Those GUIs Do Something
Jakarta Commons-FileUpload

Snapping components even when resized


Having your UI components maintain their sanity when the browser window or their container is resized without any effort from the coder is bliss. GXT provides AnchorLayout which enables contained components to anchor relatively to a container's dimensions, maintaining the anchor rules even when the container is resized.

The components rendered with AnchorLayout are sized with an anchor-spec which is a string of two values used for horizontal and vertical anchoring respectively. The values which can be expressed as percentages or offsets or even both, determine how a component is anchored to its container. A value of 100% 50% would render a component the complete width of its container and half its height, if only one value is provided in the anchor-spec it is assumed to be the width while the height will default to auto.

Similarly, an anchor-spec of -30 -120 would render the component using the complete width of its container minus 30 pixels and the...