Take the shortcut to constructing wealthy web functions in natural Java. Vaadin makes it effortless and this cookbook makes it more uncomplicated nonetheless with its functional recipes and easy approach.

Overview

  • Covers intriguing beneficial properties similar to utilizing drag and n anddrop, growing charts, customized parts, lazy loading, server-push performance, and extra
  • Tips for facilitating the advance and trying out of Vaadin applications.
  • Enhance your functions with Spring, Grails, or Roo integration.

In Detail

It is de facto dear and significant to strengthen wealthy web functions from scratch. Vaadin is an grand framework that comprises many ready-made elements for the production of consumer interfaces. purposes created in Vaadin have compatibility with the entire most up-to-date models of net browsers. even supposing the screenshots during this e-book are from Chrome, examples may also run on different browsers like Firefox Mozilla, web Explorer, and Opera.

"Vaadin 7 Cookbook" includes many useful recipes that we've got collected throughout the improvement of Vaadin functions. This publication might help you to take your studying event to the following point via supplying you with many suggestions to the typical difficulties confronted in addition to motives. there's much more than that. Vaadin 7 Cookbook is going past the fundamentals and indicates you ways to construct Vaadin software for real-world scenarios.

"Vaadin 7 Cookbook" starts off with the production of a undertaking in a number of instruments and languages then strikes to parts, layouting, occasions, info binding, and customized widgets. Vaadin, including Grails, is a robust instrument for the fast improvement of RIA purposes and this can be defined in a bankruptcy on how you can paintings with GORM, provider, compiling a widgetset. the standard and balance of the applying, trying out the Vaadin code, and information administration of Vaadin can be defined in detail.

"Vaadin 7 Cookbook" is concentrated on studying and figuring out tips to paintings with Vaadin in addition to testing Vaadin with different applied sciences corresponding to Grails .

What you'll examine from this book

  • Develop a wealthy net program in natural Java language.
  • Create a Vaadin undertaking in several IDEs and systems.
  • Explore the hot Vaadin 7 positive aspects equivalent to Extensions, URI fragments, Converter mechanism, and extra.
  • Understand and use varieties of layouts.
  • Use build-in atomic elements corresponding to button, desk, textual content box, and extra.
  • Bind version to elements and fetch information from the database lazily.
  • Work with listeners and occasions and increase your net program through including server-push accessories.
  • Integrate Vaadin into the Grails framework.

Approach

This is a cookbook with easy-to-follow recipes containing sensible and specific examples that are all totally subsidized up with code, illustrations, and information.

Who this publication is written for

"Vaadin 7 Cookbook" is for builders who are looking to create wealthy net purposes with Vaadin.

Both rookies to Vaadin and those that have a few adventure with it is going to locate recipes to extend their operating wisdom of Vaadin..

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SetImmediate(true); structure. addComponent(txtNr2); txtResult. setId("txtResult"); txtResult. setImmediate(true); structure. addComponent(txtResult); structure. setComponentAlignment(txtResult, Alignment. BOTTOM_RIGHT); btnCalculate. setId("btnCalculate"); btnCalculate. addClickListener(new Button. ClickListener() { public void buttonClick(ClickEvent occasion) { process. out. println("User clicked! "); String nr1 = txtNr1. getValue(); String operand = cmbOperand. getValue(). toString(); String nr2 = txtNr2. getValue(); Integer consequence = zero; if ("". equals(nr1) || "". equals(nr2)) { // warn consumer he has inserted incorrect enter } else { Integer i1 = Integer. valueOf(nr1); Integer i2 = Integer. valueOf(nr2); if ("+". equals(operand)) { outcome = i1 + i2; } else if ("-". equals(operand)) { consequence = i1 - i2; } } txtResult. setValue(result. toString()); } }); structure. addComponent(btnCalculate); format. setComponentAlignment(btnCalculate, Alignment. BOTTOM_RIGHT); } } the next screenshot indicates the appliance that we'll try out: we're now performed with the education paintings and will now commence the construction of the attempt. how you can do it... practice the subsequent steps: Open the applying we wish to attempt in Firefox through the use of http://localhost:8080/? restartApplication. begin Vaadin TestBench Recorder from the Firefox menu. after we begin the recorder, it immediately begins recording no matter what we do within the software. Fill in a few values contained in the textual content fields and press the Calculate button. See how the user's activities are mirrored within the recorder. for every motion within the program, there's one list that maps what the person has performed. The final step is to right-click at the end result textual content box and choose the verifyValue choice that provides a brand new assert to the try. It exams even if the output worth contained in the end result textual content box is 25. when we are performed with the attempt case, we will generate the JUnit try out and reserve it contained in the try folder in our undertaking: Then we have to visit the try and proper the package deal place. we will swap the default identify of the package deal within the TestBench plugin's ideas. this is often how our try out will probably look:@Test public void testSimplePlus() throws Exception { motive force. get(concatUrl(baseUrl, "/? restartApplication")); testBenchElement(driver. findElement(By. id("txtNr1"))). click(73,10); driving force. findElement(By. id("txtNr1")). clear(); motive force. findElement(By. id("txtNr1")). sendKeys("12"); testBenchElement(driver. findElement(By. id("txtNr2"))). click(28,13); motive force. findElement(By. id("txtNr2")). clear(); motive force. findElement(By. id("txtNr2")). sendKeys("13"); motive force. findElement(By. xpath("//span/span")). click(); try out { assertEquals("25", motive force. findElement(By. id("txtResult")). getAttribute("value")); } capture (Error e) { verificationErrors. append(e. toString()); } } Now we will be able to run the try out that we've got created. We simply begin the marina server after which run the try out, for instance, from our IDE. the way it works... TestBench is operating JUnit checks and the entire trying out is completed within the browser. that implies we will create those checks simply within the code with out clicking within the browser if we wish to.

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