Storage Retrieval

Download Google Web Toolkit Solutions: More Cool & Useful Stuff by David Geary, Rob Gordon PDF

Posted On April 11, 2017 at 6:56 am by / Comments Off on Download Google Web Toolkit Solutions: More Cool & Useful Stuff by David Geary, Rob Gordon PDF

By David Geary, Rob Gordon



Google net Toolkit (GWT) is an open resource Java improvement framework for development Ajax-enabled internet purposes. rather than the hodgepodge of applied sciences that builders commonly use for Ajax–JavaScript, HTML, CSS, and XMLHttpRequest–GWT shall we builders enforce wealthy shopper functions with natural Java, utilizing normal idioms from the AWT, Swing, and SWT. GWT is going past such a lot Ajax frameworks by way of making it effortless to construct desktop-like functions that run within the ubiquitous browser, the place the richness of the consumer interface is restricted simply via the developer’s imagination.


This booklet specializes in the extra complex elements of GWT it's good to enforce real-world functions with wealthy consumer interfaces yet with no the heavy lifting of JavaScript and different Ajax-related applied sciences. each one answer during this functional, hands-on publication is greater than a recipe. The pattern courses are rigorously defined intimately that will help you fast grasp complicated GWT strategies, similar to imposing drag-and-drop, integrating JavaScript libraries, and utilizing complicated occasion dealing with methodologies.


Solutions coated include

•   construction customized GWT widgets, together with either high-level composites and low-level components

•   enforcing a viewport type that incorporates iPhone-style automatic scrolling

•   Integrating internet prone with GWT applications

•   Incorporating the JavaScript framework into GWT applications

•   Combining Hibernate and GWT to enforce database-backed internet applications

•   Extending the GWT PopupPanel category to enforce a draggable and resizable window

•   making a drag-and-drop module, entire with drag resources and drop targets

•   Deploying GWT functions to an exterior server

•   Dynamically resizing flex tables

•   utilizing GWT widgets in legacy functions constructed with different frameworks, resembling Struts and JavaServer Faces


Complete pattern Code to be had at


All of the code utilized in this publication has been confirmed, either in hosted and net modes, and in an exterior model of Tomcat (version 5.5.17), less than home windows, Linux, and Mac OS X. For home windows and Linux, we used 1.4.60, and for the Mac we used 1.4.61.  NOTE: There are 3 separate types of the code. Please obtain the proper JAR dossier for the working procedure you're using.

Foreword xiii

Preface xvi

Acknowledgments xviii

About the Authors xix


Solution 1: GWT basics and past 1

Solution 2: JavaScript Integration 53

Solution three: customized Widget Implementation 71

Solution four: Viewports and Maps 103

Solution five: entry to on-line net prone 133

Solution 6: Drag and Drop 167

Solution 7: uncomplicated home windows 199

Solution eight: Flex Tables 237

Solution nine: dossier Uploads 283

Solution 10: Hibernate Integration 303

Solution eleven: Deployment to an exterior Server 325

Solution 12: GWT and Legacy Code 343

Index 371



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Extra info for Google Web Toolkit Solutions: More Cool & Useful Stuff

Example text

Remote procedure calls can fail for many reasons; for example, network problems. When an RPC fails, GWT passes the onFailure method a throwable that contains information about why the RPC failed. 20 on page 36, you must implement a no-argument constructor in your remote servlet. If you neglect to implement a no-argument constructor, GWT throws an exception when you make your remote procedure call. GWT Does Not Support Synchronous RPCs If you’ve implemented Ajax by hand, using the XMLHttpRequest object, you know that you can implement either an asynchronous request or a synchronous request.

9. private void loadLoginView() { 10. 11. final Button button = new Button(“Login”); 12. 13. 14. addClickListener(new ClickListener() { public void onClick(Widget sender) { 15. 16. loadWelcomeView(); } Solution 1: GWT Fundamentals and Beyond 17. 25 }); 18. 19. addClickListener(new ClickListener() { 20. public void onClick(Widget sender) { 21. alert(“New page loaded”); 22. } 23. }); 24. 25. } 26. 27. private void loadWelcomeView() { 28. welcomeMsg()); 29. addStyleName(“welcomeMsg”); 30. 31. clear(); 32.

24. 2. 3. — Inherit the core Web Toolkit stuff. —> 4. User’/> 5. I18N”/> 6. Components’/> 7. 8. css”/> 9. 10. 11. 12. — Specify the app entry point class. Login’/>

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