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CONTENTS INCLUDE:
Introduction to Canvas
HTML 5 Canvas
A Comparison with SVG
Canvas Performance
Creating a Canvas and More! By Simon Sarris
INTRODUCTION TO CANVAS
The HTML <canvas> element allows for on-the-fly creation of graphs, Canvas SVG
diagrams, games, and other visual elements and interactive media. It also
Support -
allows for the rendering of 2D and 3D shapes and images, typically via
Safari, Firefox, and Opera have at ers. Almost all modern smart phones.
JavaScript.
least some support. Internet Explorer
9+ has support. Almost all modern
<canvas id=”canvas1” width=”500” height=”500”></canvas> smart phones.
<script type=”text/javascript”>
var can = document.getElementById(‘canvas1’); limited support through the excanvas
var ctx = can.getContext(‘2d’);
library.
“Hello World!”, 50, 50);
</script>
Stateful-
ness surface surface
Canvas is perhaps the most visible part of the new HTML5 feature set,
with new demos, projects, and proofs of concept appearing daily. remembered about their state.
Canvas is a very low-level drawing surface with commands for making Other
Consider- 10,000 objects.
lines, curves, rectangles, gradients and clipping regions built in. There is ations
very little else in the way of graphics drawing, which allows programmers must be programmed yourself.
to create their own methods for several basic drawing functions such objects, statefulness is built in and
as blurring, tweening, and animation. Even drawing a dotted line is (rendering nothing) if scripting is event handling is much easier.
something that must be done by the programmer from scratch. disabled.
many programs such as Illustrator can
Canvas is an immediate drawing surface and has no scene graph. This output SVG
means that once an image or shape is drawn to it, neither the Canvas nor
its drawing context have any knowledge of what was just drawn. animation.
Accessi-
For instance, to draw a line and have it move around, you need to do bility DOM objects objects.
much more than simply change the points of the line. You must clear
the Canvas (or part of it) and redraw the line with the new points. This - and web crawlers.
contrasts greatly with SVG, where you would simply give the line a new ment functionality is strongly advised
position and be done with it. against, even in the specification
itself.
You can visit the evolving specification for Canvas at the WHATWG site:
Hot http://www.whatwg.org/specs/web-apps/current-work/multipage/
disabled.
Tip the-canvas-element.html.
Browser Support and Hardware Acceleration
Canvas is supported by Firefox 1.5 and later; Opera 9 and later; and
newer versions of Safari, Chrome, and Internet Explorer 9 and 10.
The latest versions of these browsers support nearly all abilities of the
Canvas element. A notable exception is drawFocusRing, which no
browser supports effects.
Hardware acceleration is supported in some variation by all current
browsers, though the performance gains differ. It is difficult to benchmark
between the modern browsers because they are changing frequently, but
so far IE9 seems to consistently get the most out of having a good GPU.
HTML5 Canvas
On a machine with a good video card it is almost always the fastest at
rendering massive amounts of images or canvas-to-canvas draws.
Accelerated IE9 also renders fillRect more than twice as fast as the other
major browsers, allowing for impressive 2D particle effects [1]. Chrome
often has the fastest path rendering but can be inconsistent between
releases. All browsers render images and rects much faster than paths or
text, so it is best to use images and rects if you can regardless of which
browsers you are targeting.
DZone, Inc. | www.dzone.com
16. huhtikuuta 12](https://image.slidesharecdn.com/desingningreusablewebcomponents-handout-120417004129-phpapp02/85/Desingning-reusable-web-components-15-320.jpg)
![Idea
=
UX [how it is used]
+
Tech [how it works]
16. huhtikuuta 12](https://image.slidesharecdn.com/desingningreusablewebcomponents-handout-120417004129-phpapp02/85/Desingning-reusable-web-components-44-320.jpg)
![35
Search… Explore Gist Blog Help jojule
jojule / spreadsheet Admin Unwatch Fork Pull Request 1 1
Code Network Pull Requests 0 Issues 0 Wiki 0 Stats & Graphs
Simple spreadsheet component for Vaadin — Read more
https://vaadin.com/addon/spreadsheet
Clone in Mac ZIP SSH HTTP Git Read-Only git@github.com:jojule/spreadsheet.git Read+Write access
branch: master Files Commits Branches 1 Tags Downloads
Latest commit to the master branch
https://github.com/jojule/spreadsheet
Update README.markdown
jojule authored 4 hours ago commit 7453f467b1
spreadsheet /
name age message history
design a day ago Developing [Joonas Lehtinen]
src 19 hours ago Version 0.1 [Joonas Lehtinen]
README.markdown 4 hours ago Update README.markdown [jojule]
licensing.txt 19 hours ago Version 0.1 [Joonas Lehtinen]
pom.xml 18 hours ago Fixed add-on name [Joonas Lehtinen]
README.markdown
16. huhtikuuta 12](https://image.slidesharecdn.com/desingningreusablewebcomponents-handout-120417004129-phpapp02/85/Desingning-reusable-web-components-76-320.jpg)
![brought to you by...
#151
Get More Refcardz! Visit refcardz.com
CONTENTS INCLUDE:
Introduction to Canvas
HTML 5 Canvas
A Comparison with SVG
Canvas Performance
Creating a Canvas and More! By Simon Sarris
INTRODUCTION TO CANVAS
The HTML <canvas> element allows for on-the-fly creation of graphs, Canvas SVG
diagrams, games, and other visual elements and interactive media. It also
Support -
allows for the rendering of 2D and 3D shapes and images, typically via
Safari, Firefox, and Opera have at ers. Almost all modern smart phones.
JavaScript.
least some support. Internet Explorer
9+ has support. Almost all modern
<canvas id=”canvas1” width=”500” height=”500”></canvas> smart phones.
<script type=”text/javascript”>
var can = document.getElementById(‘canvas1’); limited support through the excanvas
var ctx = can.getContext(‘2d’);
library.
“Hello World!”, 50, 50);
</script>
Stateful-
ness surface surface
Canvas is perhaps the most visible part of the new HTML5 feature set,
with new demos, projects, and proofs of concept appearing daily. remembered about their state.
Canvas is a very low-level drawing surface with commands for making Other
Consider- 10,000 objects.
lines, curves, rectangles, gradients and clipping regions built in. There is ations
very little else in the way of graphics drawing, which allows programmers must be programmed yourself.
to create their own methods for several basic drawing functions such objects, statefulness is built in and
as blurring, tweening, and animation. Even drawing a dotted line is (rendering nothing) if scripting is event handling is much easier.
something that must be done by the programmer from scratch. disabled.
many programs such as Illustrator can
Canvas is an immediate drawing surface and has no scene graph. This output SVG
means that once an image or shape is drawn to it, neither the Canvas nor
its drawing context have any knowledge of what was just drawn. animation.
Accessi-
For instance, to draw a line and have it move around, you need to do bility DOM objects objects.
much more than simply change the points of the line. You must clear
the Canvas (or part of it) and redraw the line with the new points. This - and web crawlers.
contrasts greatly with SVG, where you would simply give the line a new ment functionality is strongly advised
position and be done with it. against, even in the specification
itself.
You can visit the evolving specification for Canvas at the WHATWG site:
Hot http://www.whatwg.org/specs/web-apps/current-work/multipage/
disabled.
Tip the-canvas-element.html.
Browser Support and Hardware Acceleration
Canvas is supported by Firefox 1.5 and later; Opera 9 and later; and
newer versions of Safari, Chrome, and Internet Explorer 9 and 10.
The latest versions of these browsers support nearly all abilities of the
Canvas element. A notable exception is drawFocusRing, which no
browser supports effects.
Hardware acceleration is supported in some variation by all current
browsers, though the performance gains differ. It is difficult to benchmark
between the modern browsers because they are changing frequently, but
so far IE9 seems to consistently get the most out of having a good GPU.
HTML5 Canvas
On a machine with a good video card it is almost always the fastest at
rendering massive amounts of images or canvas-to-canvas draws.
Accelerated IE9 also renders fillRect more than twice as fast as the other
major browsers, allowing for impressive 2D particle effects [1]. Chrome
often has the fastest path rendering but can be inconsistent between
releases. All browsers render images and rects much faster than paths or
text, so it is best to use images and rects if you can regardless of which
browsers you are targeting.
DZone, Inc. | www.dzone.com
16. huhtikuuta 12](https://image.slidesharecdn.com/desingningreusablewebcomponents-handout-120417004129-phpapp02/75/Desingning-reusable-web-components-15-2048.jpg)
![Idea
=
UX [how it is used]
+
Tech [how it works]
16. huhtikuuta 12](https://image.slidesharecdn.com/desingningreusablewebcomponents-handout-120417004129-phpapp02/75/Desingning-reusable-web-components-44-2048.jpg)
![35
Search… Explore Gist Blog Help jojule
jojule / spreadsheet Admin Unwatch Fork Pull Request 1 1
Code Network Pull Requests 0 Issues 0 Wiki 0 Stats & Graphs
Simple spreadsheet component for Vaadin — Read more
https://vaadin.com/addon/spreadsheet
Clone in Mac ZIP SSH HTTP Git Read-Only git@github.com:jojule/spreadsheet.git Read+Write access
branch: master Files Commits Branches 1 Tags Downloads
Latest commit to the master branch
https://github.com/jojule/spreadsheet
Update README.markdown
jojule authored 4 hours ago commit 7453f467b1
spreadsheet /
name age message history
design a day ago Developing [Joonas Lehtinen]
src 19 hours ago Version 0.1 [Joonas Lehtinen]
README.markdown 4 hours ago Update README.markdown [jojule]
licensing.txt 19 hours ago Version 0.1 [Joonas Lehtinen]
pom.xml 18 hours ago Fixed add-on name [Joonas Lehtinen]
README.markdown
16. huhtikuuta 12](https://image.slidesharecdn.com/desingningreusablewebcomponents-handout-120417004129-phpapp02/75/Desingning-reusable-web-components-76-2048.jpg)
Uploaded byJoonas Lehtinen
Desingning reusable web components
The document outlines the design process for creating reusable web components using technologies such as HTML5, Google Web Toolkit, and Vaadin framework. It emphasizes the importance of defining goals for user experience, ensuring browser compatibility, and using prototyping to guide design decisions. Additionally, it encourages developers to focus on manual and user experience testing for component functionality and usability.
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Desingning reusable web components
- 1. Designing Reusable Web Components Joonas Lehtinen, PhD Vaadin Ltd - CEO vaadin.com/vaadin @joonaslehtinen
- 2. Agenda Goal Q&A • Test app Designing Web Component Technology Step-by-step •HTML5 / Canvas •Google Web Toolkit •Vaadin Framework 16. huhtikuuta 12
- 3. 16. huhtikuuta 12 1 Goal
- 4.
- 5.
- 6.
- 7. 16. huhtikuuta 12 2 Technology
- 8.
- 9.
- 10. Element Description <article> An independent piece of content for a document e.g. blog entry, forum entry <aside> A piece of content that is somehow related to the rest of the page <audio> Audio media content <canvas> A component for rendering dynamic bitmap graphics on the fly. e.g games <command> A command that the user can invoke: a button, radio button or checkbox <datalist> Together with the new list attribute for the <input> element can be used to make combo boxes <details> Additional information or controls that the user can obtain on demand, to provide details on the document, or parts of it <embed> Used for plug-in content <figure> A piece of self-contained flow content referenced as a single unit from the main flow of the document <figcaption> Caption for a <footer> Footer for a section; may contain information about author, copyright information, etc. <header> A group of introductory or navigation aids <hgroup> Header of a section <keygen> A key pair generation control for user authentication in forms <mark> A run of text in one document marker or highlighted for reference purposes 16. huhtikuuta 12
- 11.
- 12. Cross-document CSS3 messaging Document editing Multimedia Microdata WebGL Offline storage Canvas Markup improvements History management Forms Geolocation Drag-and-drop File API 16. huhtikuuta 12
- 13. Canvas state state state 16. huhtikuuta 12
- 14.
- 15. brought to youby... #151 Get More Refcardz! Visit refcardz.com CONTENTS INCLUDE: Introduction to Canvas HTML 5 Canvas A Comparison with SVG Canvas Performance Creating a Canvas and More! By Simon Sarris INTRODUCTION TO CANVAS The HTML <canvas> element allows for on-the-fly creation of graphs, Canvas SVG diagrams, games, and other visual elements and interactive media. It also Support - allows for the rendering of 2D and 3D shapes and images, typically via Safari, Firefox, and Opera have at ers. Almost all modern smart phones. JavaScript. least some support. Internet Explorer 9+ has support. Almost all modern <canvas id=”canvas1” width=”500” height=”500”></canvas> smart phones. <script type=”text/javascript”> var can = document.getElementById(‘canvas1’); limited support through the excanvas var ctx = can.getContext(‘2d’); library. “Hello World!”, 50, 50); </script> Stateful- ness surface surface Canvas is perhaps the most visible part of the new HTML5 feature set, with new demos, projects, and proofs of concept appearing daily. remembered about their state. Canvas is a very low-level drawing surface with commands for making Other Consider- 10,000 objects. lines, curves, rectangles, gradients and clipping regions built in. There is ations very little else in the way of graphics drawing, which allows programmers must be programmed yourself. to create their own methods for several basic drawing functions such objects, statefulness is built in and as blurring, tweening, and animation. Even drawing a dotted line is (rendering nothing) if scripting is event handling is much easier. something that must be done by the programmer from scratch. disabled. many programs such as Illustrator can Canvas is an immediate drawing surface and has no scene graph. This output SVG means that once an image or shape is drawn to it, neither the Canvas nor its drawing context have any knowledge of what was just drawn. animation. Accessi- For instance, to draw a line and have it move around, you need to do bility DOM objects objects. much more than simply change the points of the line. You must clear the Canvas (or part of it) and redraw the line with the new points. This - and web crawlers. contrasts greatly with SVG, where you would simply give the line a new ment functionality is strongly advised position and be done with it. against, even in the specification itself. You can visit the evolving specification for Canvas at the WHATWG site: Hot http://www.whatwg.org/specs/web-apps/current-work/multipage/ disabled. Tip the-canvas-element.html. Browser Support and Hardware Acceleration Canvas is supported by Firefox 1.5 and later; Opera 9 and later; and newer versions of Safari, Chrome, and Internet Explorer 9 and 10. The latest versions of these browsers support nearly all abilities of the Canvas element. A notable exception is drawFocusRing, which no browser supports effects. Hardware acceleration is supported in some variation by all current browsers, though the performance gains differ. It is difficult to benchmark between the modern browsers because they are changing frequently, but so far IE9 seems to consistently get the most out of having a good GPU. HTML5 Canvas On a machine with a good video card it is almost always the fastest at rendering massive amounts of images or canvas-to-canvas draws. Accelerated IE9 also renders fillRect more than twice as fast as the other major browsers, allowing for impressive 2D particle effects [1]. Chrome often has the fastest path rendering but can be inconsistent between releases. All browsers render images and rects much faster than paths or text, so it is best to use images and rects if you can regardless of which browsers you are targeting. DZone, Inc. | www.dzone.com 16. huhtikuuta 12
- 16. Google Web Toolkit 16.huhtikuuta 12
- 17. Subset of IE6 java.lang, java.util Java to IE7 Widgetset JavaScript Compiler Firefox Your Application UI Safari 16. huhtikuuta 12
- 18. simpler • 100% Java • Static typing • Object oriented • Excellent tooling 16. huhtikuuta 12
- 19. less bugs • Stop debugging JavaScript spaghetti • Ignore most browser differences 16. huhtikuuta 12
- 20. client-side • UI in client • Asyncronous RPC • Services (for UI) 16. huhtikuuta 12
- 21.
- 22. Vaadin is a UI framework for rich web applications 16. huhtikuuta 12
- 23. java html 16. huhtikuuta 12
- 24. Layers of abstraction backend frontend RPC browser browser server server any language any language json / xml java ➠ javascript ExtJS GWT Vaadin required required optional optional optional required required required required optional required required required X required 16. huhtikuuta 12
- 25. Vaadin UI component architecture HTTP(S) Server UI comp. Client UI comp. • Button, Table, Tree, ... • Rendering • API you program with • Event handling • State • Runs on JavaScript Java Java • Compiled with JDK • Google Web Toolkit 16. huhtikuuta 12
- 26. How does it work, really? 16. huhtikuuta 12
- 27.
- 28. • Initial HTML • CSS (theme) • Images • JavaScript 120k total 16. huhtikuuta 12
- 29. • name=”Joonas” • button clicked 150 bytes 16. huhtikuuta 12
- 30.
- 31. • name=”Joonas” • button clicked 150 bytes • Add notification 466 bytes 16. huhtikuuta 12
- 32.
- 33.
- 34.
- 35. Download for Free vaadin.com/book Vaadin is a for build n open source ing mod J look gre ern web ava framework at, applicat your use perform well a ion rs happ nd make s that y. you and http://va adin.com / SBN 978 -9 52-92-67 53-8 90000 9 7 8 95 2 9 267538 $29.95 4th Editio n 674 pages 16. huhtikuuta 12
- 36. brought to youby... #85 Get More Refcardz! Visit refcardz.com CONTENTS INCLUDE: About Vaadin Getting Started with Vaadin Creating An Application Components Layout Components Themes Data Binding and more... By Marko Grönroos ABOUT VAADIN Web Browser External Client-Side Resources Vaadin is a server-side Ajax web application development Engine framework that allows you to build web applications just like AJAX Requests with traditional desktop frameworks, such as AWT or Swing. An Servlet Container Java File application is built from user interface components contained Servlet Resources hierarchically in layout components. Data In the server-driven model, the application code runs on Application UI Binding Default Class Component Theme a server, while the actual user interaction is handled by a client-side engine running in the browser. The client-server Inherits Events Changes Inherits communications and any client-side technologies, such as User Event Data Application Application HTML and JavaScript, are invisible to the developer. As the Application Listener Model Themes Resources client-side engine runs as JavaScript in the browser, there is no need to install plug-ins. Vaadin is released under the Apache Database License 2.0. Web Java Vaadin Your Web Figure 2: Architecture for Vaadin Applications Browser Web UI Java Service Client-Side Server Components Application You can get a reference to the application object w.dzone.com Engine EJB Hot Tip from any component attached to the application with DB Event Listeners Figure 1: Vaadin Client-Server Architecture In the event-driven model, user interaction with user interface If the built-in selection of components is not enough, you can components triggers server-side events, which you can handle 16. huhtikuuta 12 develop new components with the Google Web Toolkit (GWT)
- 37. 16. huhtikuuta 12 3 Designing Step-by-step
- 38.
- 39.
- 40. Need We can not get the UX we need with the existing widgets 16. huhtikuuta 12
- 41. Goals • List of • real • quantifiable • requirements • for UX 16. huhtikuuta 12
- 42. Example goals • Load and view data in XLS files • Show visual overview for numeric cols • Must support 1000 cell tables • Supports the latest Firefox & Chrome 16. huhtikuuta 12
- 43. Nail down the minimum viable set of supported browser versions with the customer 16. huhtikuuta 12
- 44. Idea = UX [how it is used] + Tech [how it works] 16. huhtikuuta 12
- 45.
- 46.
- 47.
- 48. Always start from defined goals - never let idea to rule your design 16. huhtikuuta 12
- 49.
- 50. Works with target browsers? 16. huhtikuuta 12
- 51. Interactions work with target browsers? Performance is good enough for target data? 16. huhtikuuta 12
- 52. Proto DOD • Includes main use-cases • Works in target browsers • Handles enough data 16. huhtikuuta 12
- 53. Never start design or implementation before prototyping browser compatibility and performance 16. huhtikuuta 12
- 54.
- 55. Design UX andAPI first. Never continue from the prototype implementation 16. huhtikuuta 12
- 56. Drawing detailed wireframes and mockups and testing them with users will save time later 16. huhtikuuta 12
- 57.
- 58. Shamelessly copy UX. Then your users already know how to use it. 16. huhtikuuta 12
- 59.
- 60. Aim for multilayered design that lets your users (developers) change behavior of your component 16. huhtikuuta 12
- 61.
- 62. DOM classes and CSS restrictions must be documented to make styling easy 16. huhtikuuta 12
- 63.
- 64. Keep component project separate from your real application project 16. huhtikuuta 12
- 65. Demo application must include all features and serve as example for your users 16. huhtikuuta 12
- 66.
- 67. Invest in project setup with a rapid save-to-see cycle and a robust build script. These might not be the same thing. 16. huhtikuuta 12
- 68. https://vaadin.com/wiki/-/wiki/Main/ Component+Add-on+Project+Setup+HOWTO 16. huhtikuuta 12
- 69.
- 70. There is nosubstitute for manual testing and user experience testing 16. huhtikuuta 12
- 71. Skip test driven development, but invest in regression testing 16. huhtikuuta 12
- 72. Pixel level regression tests take time to set up, but will be worth it 16. huhtikuuta 12
- 73. Never trust that your changes would not break other browsers and skip cross-browser testing 16. huhtikuuta 12
- 74. It is impossibleto use too much time in polishing UX for a reusable component. 16. huhtikuuta 12
- 75.
- 76. 35 Search… Explore Gist Blog Help jojule jojule / spreadsheet Admin Unwatch Fork Pull Request 1 1 Code Network Pull Requests 0 Issues 0 Wiki 0 Stats & Graphs Simple spreadsheet component for Vaadin — Read more https://vaadin.com/addon/spreadsheet Clone in Mac ZIP SSH HTTP Git Read-Only git@github.com:jojule/spreadsheet.git Read+Write access branch: master Files Commits Branches 1 Tags Downloads Latest commit to the master branch https://github.com/jojule/spreadsheet Update README.markdown jojule authored 4 hours ago commit 7453f467b1 spreadsheet / name age message history design a day ago Developing [Joonas Lehtinen] src 19 hours ago Version 0.1 [Joonas Lehtinen] README.markdown 4 hours ago Update README.markdown [jojule] licensing.txt 19 hours ago Version 0.1 [Joonas Lehtinen] pom.xml 18 hours ago Fixed add-on name [Joonas Lehtinen] README.markdown 16. huhtikuuta 12
- 77. README.markdown Spreadsheet for Vaadin The widget shows a spreadsheet - either from XLS file or by setting the cell contents programmatically. This version is very limited and should be considered to be an early alpha -version. Try out the demo to see if it would be useful for you. I mainly built it for an upcoming presentation. SpreadsheetView class should be also usable in GWT without Vaadin Framework, but then you must implement SpreadsheetModel by yourself. Dependencies Apache POI 3.8 - http://poi.apache.org/ Apache Commons Codec 1.5 - Required by POI - http://commons.apache.org/codec/ Release notes Initial release with severe limitations: All columns and rows have fixed sizes No cell styling is supported No graphs are supported No merged cells are supported Performance for larger spreadsheets is really bad Only one spreadsheet widget is supported on screen at once License & Author 16. huhtikuuta 12 Apache License 2.0
- 78.
- 79.
- 80.
- 81.
- 82.
- 83.
- 84. PaperStack notes =new PaperStack(); ! ! @Override ! public void init() { // === Layout ======================================================== ! ! HorizontalLayout lo= new HorizontalLayout(); ! ! Window mainWindow = new Window("Postitnotes Application", lo); ! ! lo.setSizeFull(); ! ! lo.addComponent(notes); ! ! lo.setComponentAlignment(notes, Alignment.MIDDLE_CENTER); ! ! setMainWindow(mainWindow);!! ! ! notes.setWidth("350px"); ! ! notes.setHeight("350px"); ! ! // === Note 1 ======================================================== ! ! notes.addComponent(new Label("<h1>TODO / Today</h1><div style='font-size: 24px'>” + “<p>Enjoy the conference...</p></div>", Label.CONTENT_XHTML), "#fef49c"); // === Note 2 ======================================================== ! ! notes.addComponent(new Label("<h1>TODO / Tomorrow</h1><div style='font-size: 24px'>” + “<p>Learn Vaadin!</p></div>", Label.CONTENT_XHTML), "#b2ffa1"); // === Note 3 ======================================================== ! ! notes.addComponent(new Label("<div style='font-size: 60px'><center><br/><br/><br/>” + “DOUBLE<br/><br/><br/>SPEED</center></div>", Label.CONTENT_XHTML), "#b2ffa1"); // === Note 4 ======================================================== ! ! com.vaadin.ui.RichTextArea rta = new RichTextArea(); ! ! rta.setSizeFull(); ! ! notes.addComponent(rta); ! ! rta.setValue("<span style='font-size: 35pt; color: green;'>You can use any “ + “Vaadin components here...</span>"); ! } 16. huhtikuuta 12
- 85. T out mySpreadsheet! ry vaadin.com/addon/spreadsheet 16. huhtikuuta 12
- 86. https://github.com/jojule/ spreadsheet/issues 16. huhtikuuta 12
- 87. Support HOWTO Ignore. wont-fix in best case. (the usual open source way) Issue reported by Fix after 6 months, actual user! maybe... Fix immediately and thank the user who reported it 16. huhtikuuta 12
- 88. 16. huhtikuuta 12 4 Q&A
- 89. Questions? Comments? joonas@vaadin.com Expert services vaadin.com/joonas Better @joonaslehtinen Online support #vaadin Results Training Faster Tools vaadin.com/pro 16. huhtikuuta 12