Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master

Seo Master present to you: Posted by Andrew Bowers, Google Developer Programs

Thanks to the incredible interest in Google Developer Day, we've moved the session portion of the day to the San Jose Convention Center. From 9:00 a.m. to 5:30 p.m., we'll be bringing ourselves and a little of the Google campus a few miles south. After the sessions wrap up at 5:30, everyone will head back up to Google for food, music, and general chilling out with other developers from around the United States and the world.

For everyone's convenience, from 5:30 to 9:00 p.m. Google will provide shuttle buses continually between the Convention Center and the Google campus. For those of you driving, parking will also be available at Shoreline Amphitheatre.

We'll be posting more information about the event in the next few days, so check back at code.google.com for the latest information.

Update: Clarified that the sessions run until 5:30 pm.2013, By: Seo Master

Seo Master present to you: This post is part of the Who's @ Google I/O, a series of blog posts that give a closer look at developers who'll be speaking or demoing at Google I/O. This guest post is written by Reuben S. Kerben and Andrei Volgin, CEO and President of Spiral Universe, who will be demoing as part of the Developer Sandbox.

When we started working on a new school information management system a couple of years ago, we wanted to make it available to all schools around the world even if they could not pay for it. Cloud architecture was the only way to go. The key challenge was to build a user interface that could work with any modern browser, support any language, and did not require any plugins. We chose Google Web Toolkit (GWT). There were other RIA frameworks available, but few matched the scalability, performance and flexibility of the Java + GWT combo.

GWT was in its infancy at that time, and our first "webtop" UI was sluggish. It took a leap of faith to stick with the webtop concept. We hoped that advances in web browsers and the GWT compiler would improve our UI performance by the time we hit the market. The GWT team delivered! Once we upgraded to GWT 2.0, the UI became very responsive, and now it closely mimics the desktop experience.

We also must thank Darrel Meyer and the Ext GWT team for improving their library, on which we rely heavily, and the entire Chrome team for raising the performance bar so quickly. After more than two years of coding, we released our beta to the public this January. Today, our system is already used by schools in 80 countries! We are proud to participate in Google I/O to show off our technology and, hopefully, inspire other developers to rethink their approach to UI. We also plan to shop for apps that we can integrate with our system. If your company has a cool product or service that schools, teachers, students or parents will be interested in, send us a note, or come talk to us at the Developer Sandbox.



Posted by Reuben S. Kerben and Andrei Volgin, CEO and President of Spiral Universe2013, By: Seo Master

Seo Master present to you: This post is part of the Who's @ Google I/O, a series of blog posts that give a closer look at developers who'll be speaking or demoing at Google I/O. Today's post is a guest post written by Paul Donnelly and Jonathan Trevor of the Yahoo! Pipes team.

Yahoo! Pipes is a free online service that lets you remix popular feed types (json, xml, rss, and atom) and create data mashups using a visual editor. You can use Pipes to run your own web projects, or publish and share your own web service without ever having to write a line of code. Pipes also allows you to create feeds from web sites that don't provide RSS/XML by extracting data straight from the HTML document. In this post, we'll talk about how the Pipes editor uses the HTML5 canvas tag extensively, challenges we faced using the canvas tag and a few solutions we came up with to address said challenges.

Pipes is widely known for its visual editor that allows you to drag pre-configured modules onto its canvas and wire them together:


We use the canvas tag to create the fluid, draggable wiring to connect modules. The thumbnails of Pipes on the Browse and My Pipes sections aren't jpegs - we use canvas to "draw" them dynamically from the Pipe definition.



Since the iPhone's web browser supports the canvas tag, we were able to use the same code to generate the thumbnails for our iPhone version.

The Pipes editor is where all the visual programming is done. By dragging modules to the workspace, you can set up a visual workflow of what you want processed. To complete the flow, you need to connect the modules in the sequence you want. At the bottom or top of the modules are terminals, where you connect the wires from one to the other. The terminals are typed, meaning you can only connect an output to an input that has the same type.

The canvas tag is a HTML tag that provides a fixed drawing area that can be used to draw graphics. The tag is manipulated using Javascript to create 2D drawing primitives such as lines, circles, polygons and even gradients. While many browsers support the canvas tag natively, some do not. For example, IE does not support canvas natively. To address this, IE uses a canvas wrapper, excanvas (created by Google) to ensure full cross-browser compatibility.

The canvas tag enabled us to leverage the built-in capabilities of CSS and the DOM for the rest of the interface while still providing us with 2D drawing capabilities. We observed a few issues with the canvas tag that developers should be cognizant of when considering to use it in their applications:

• There are cross-browser issues related to resizing the canvas tag once it's been created. In Firefox you're ok. In Safari, you need to destroy and re-create the region to get the canvas to draw properly. With IE, the region doesn't clear and redraw automatically.


• In the canvas element you can't say, "this line being drawn should be this class". There is no separation between the presentation and the markup. It has to be programmatically done and it's cumbersome to keep tweaking JS code to change the look and feel of what is being rendered. So how do you tell the canvas what style of wire to draw? We chose to use the styles of the source and target terminals to infer the wire styles in their CSS. We put the configuration of the wire style (color, width, thickness etc..) into the background image filename of each terminal which the JavaScript could parse to create a compatible render style for our canvas wires.


• Performance rapidly decreases with size, especially with other overlapping DOM elements such as many transparent elements and other canvas tags. There is a tradeoff therefore between using one canvas tag with many wires or one canvas for each wire. The latter worked better for our usage within the Pipes editor.


• There are no "canvas" events about the "inside" of the canvas, It's just a 2D layer, and mixing DOM elements with canvas has significant event occlusion issues. Even if you are only drawing a wire within the canvas rectangle, anything under the canvas won't see events (mouseover, click etc) as the bounding box acts like any other element. This issue involved the most iterations in our interaction design. Initially we wanted the wires above the modules, but because of the event occlusion that the canvas tag created, we couldn't do a drag/drop (since the targets were always "under" the canvas). Since the wires had to be on the bottom, we then tried making the Pipes' modules themselves semi-transparent. Not only does this give a faded out look to the whole page, but many transparent elements create significant rendering performance issues. We finally picked a solution that kept the wires under the modules and when mouse-overing the canvas containing the wire bounding box, we made the modules connected to either end of the wire in the canvas semi-transparent using animation. This allows parts of the UI to show the wiring flowing around and under modules when the user focuses (by moving the mouse over) on a wire.

If you would like to learn more and talk with us about the pros and cons of canvas and some of the interesting challenges above, visit us at the Developer Sandbox at Google I/O coming up in a couple weeks.

By Paul Donnelly and Jonathan Trevor of the Yahoo! Pipes Team2013, By: Seo Master

Seo Master present to you: By Mickey Kataria, Google Maps API team

We just released the Google Maps API for Flash, which gives developers access to Google Maps from Flash/Flex apps using ActionScript. For more details, check out the Google Maps API blog, and as always, let us know what you think.2013, By: Seo Master

Seo Master present to you: Six months ago, we announced our first step in supporting single sign-on using OpenID. Well, we wanted to share with you what we have been working on since. As a strong supporter of open standards such as OpenID, Google's top priority in this area has been to join the OpenID community in its efforts to increase the adoption of the protocol by both Relying Party websites and end users. In order to achieve that goal, we have been experimenting with new ways to improve OpenID usability and extend its functionality.

Our first enhancement, announced in January 2009, was to introduce the "Hybrid Protocol" API - combining OpenID's federated login with the OAuth access authorization. The Hybrid Protocol allows websites to ask Google to authenticate a user through their Google Account, while at the same time requesting access to information available via OAuth - enabled APIs such as the Google Data APIs. By combining the two protocols together, the Relying Party provides a better overall user experience and significantly reduces latency by cutting down the number of browser redirects and roundtrips. Plaxo, one of the websites using the Hybrid Protocol, published a presentation pointing out an amazing 92% success rate while experimenting with the API.

We are happy to announce today two new enhancements to our API - introducing a new popup style UI for our user facing approval page, and extending our Attribute Exchange support to include first and last name, country and preferred language.

The new popup style UI, which implements the OpenID User Interface Extension Specification, is designed to streamline the federated login experience for users. Specifically, it's designed to ensure that the context of the Relying Party website is always available and visible, even in the extreme case where a confused user closes the Google approval window. JanRain, a provider of OpenID solutions, is an early adopter of the new API, and already offers it as part of their RPX product. As demonstrated by UserVoice using JanRain's RPX, the initial step on the sign-in page of the Relying Party website is identical to that of the "full page" version, and does not require any changes in the Relying Party UI.


Once the user selects to sign in using his or her Google Account, the Google approval page is displayed. However, it does not replace the Relying Party's page in the main browser window. Instead it is displayed as a popup window on top of it. We have updated our Open Source project to include a complete Relying Party example, providing code for both the back-end (in Java) and front-end (javascript) components.


Once the user approves the request, the popup page closes, and the user is signed in to the Relying Party website.


Note that the popup style UI does not replace Google's existing full-page version, nor does it change the current behavior of our existing Relying Parties. It is up to the Relying Party to decide which of the two available formats they prefer, and modify their OpenID request accordingly as defined in the Google API Documentation.

As you can see in the screenshots provided, the user is not just signing in using her Google Account, but is also sharing specific information from her Google Account with the Relying Party website. This information may be either static fields (using Attribute Extension) such as the user's email, first and last name, preferred language and country, or allowing access to any available Google Data API such as the user's Contacts List, Web Albums, or Calendar (using OAuth). Google strongly believes that the data our users trust us with belongs to them and should always be available for them to use. By providing users with more secure means to share their data, they can benefit from a much more streamlined, personalized and socially relevant experience when they log in to trusted websites. At the same time, Relying Parties can significantly simplify their account creation and sign-in flows, resulting in happier users and higher successful registration rates.

If you want to know what's coming next and impact what the future advancements are, you are welcome to join the OpenID and OAuth mailing lists.

By Yariv Adan, Google Security Team2013, By: Seo Master

Seo Master present to you: By Mark Pilgrim, Google Code Team

The open web is the web built on open standards: HTML, JavaScript, CSS, and more. The open web is a beautiful soup of barely compatible clients and servers. It comprises billions of pages, millions of users, and thousands of browser-based applications. You can access the open web with open source and proprietary browsers, on open source and proprietary operating systems, on open source and proprietary hardware.

Google has built its business here, on the open web, and we want to help you build here too. To that end, we are happy to announce the formation of an encyclopedia for web developers, by web developers: Google Doctype.

In its current (beta) form, Google Doctype contains dozens of articles written by top Googlers on topics important to all web developers: security, performance, caching, DOM manipulation, CSS styling, and more. It contains over 8,000 lines of JavaScript code: Google's own battle-tested JavaScript library, released today under a liberal open source license. And it contains the beginnings of a test-driven reference of the open web: a reference of every element, every attribute, every DOM method, every CSS property, all backed up by test cases.

Well, not quite every property; at least, not yet. We're still working on filling in a few of the details about the world's largest development platform ever, and we need your help. And so we humbly offer this fledgling encyclopedia under a Creative Commons Attribution license, and we invite the web developers of the world to contribute to it. Sign in with your Google account and edit any page, any article, anywhere. Create new ones, update old ones, and help expand the world's understanding of the open web.2013, By: Seo Master

Seo Master present to you: 2013, By: Seo Master