Google Developers Blog: September 2009
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Last week I hosted Chris Anderson for a Google tech talk on CouchDB as part of the Web Ex ponents speaker series. Chris is an Apache CouchDB committer. He is co-author of the forthcoming O'Reilly book CouchDB : The Definitive Guidecouch.io .Google Gears blazed the trail, and Web Storage is part of HTML5. CouchDB is a NoSQL alternative that makes it easy for web apps to run offline. This is important because even as bandwidth grows, latency is still an issue for a significant number of users, and outages or zero-bars can and do happen. CouchDB makes this a non-issue by running your application close to the user, on their device or in their browser. Chris calls this "ground computing" - a refreshing counterpoint to the oft-used "cloud computing" label. Hear more from Chris in his video and slides .videos in the Web Exponents speaker series:By Steve Souders, Performance Evangelist
Google Data API for Google Sites. The API supports most of the functionality found in Google Sites, which includes the ability to:Retrieve, create, modify, and delete pages and content. Upload/download attachments. Review the revision history across a site. Display recent user activity. documentation , Java Developer's Guide , or dive into our code samples . We're also open-sourcing an import/export tool that uploads or creates a local back-up of an entire Google Site.developer forum if you have questions!By Eric Bidelman, Google Sites API Team
On April 7th, Google launched a new version of Gmail for mobile for iPhone and Android-powered devices. We shared the behind-the-scenes story through this blog and decided to share more of what we've learned in a brief series of follow-up blog posts. This week, I'll talk about different ways to animate the floaty bar. Screenshots of the floaty bar in action .CSS_FLOATY_BAR { // Constructor for the floaty bar -webkit-transition rule specifies the animation parameters. (The 'top' property is to be animated, over 0.2s, using the ease-out timing function.) This is the animation behavior we had at launch, and it works just fine on Android and mobile Safari browsers.translateY . Here's the same logic, updated to use CSS transforms..CSS_FLOATY_BAR { // Called when it's time for the floaty bar to move performance enhanced ", whilst our first iteration (animating the 'top' property) is performed by the OS in software. That's why the experience was unfortunately somewhat chunky at times, depending on the speed of the iPhone hardware.By Joanne McKinley, Software Engineer, Google Mobile Previous posts from Gmail for Mobile HTML5 Series: HTML5 and Webkit pave the way for mobile web applications Using AppCache to launch offline - Part 1 Using AppCache to launch offline - Part 2 Using AppCache to launch offline - Part 3 A Common API for Web Storage Suggestions for better performance Cache pattern for offline HTML5 web application Using timers effectively Autogrowing Textareas Reducing Startup Latency
Alongside the exciting release of Google Sidewiki today, we're also happy to announce the availability of the first version of the Google Sidewiki Data API. Google Sidewiki is a new feature of Google Toolbar (for Firefox and Internet Explorer) that lets everyone contribute helpful information next to any webpage. Our post over on the Google Blog goes into more detail and also has a video that shows Sidewiki in action. To start using it yourself, go to google.com/sidewiki and install Google Toolbar with Sidewiki.client libraries , documentation and code samples ready to go for you. We'll be excited to see what gadgets, projects and extensions you'll think of. A translation gadget that displays and translates Sidewiki entries on the fly? A Google App Engine -powered browser of all Sidewiki entries? Your own browser extension or Greasemonkey script?Google Sidewiki API is available in Google Code Labs and is read-only at the moment. We've set up a developer-oriented discussion group and issue tracker where you can discuss your experiences with the API and where we'd love to hear about your feedback and projects. Keep us posted!By Roman Shuvaev, Google Sidewiki engineer
Are you interested in HTML 5 and what's coming down the pipeline but haven't had time to read any articles yet? We've put together an educational Introduction to HTML 5 video that goes over many of the major aspects of this new standard, including: Web vector graphics with the Canvas tag and Scalable Vector Graphics (SVG) The Geolocation API HTML 5 Video The HTML 5 Database and Application Cache Web workers By Brad Neuberg, Google Developer Programs
Today, we're releasing an early version of Google Chrome Frame , an open source plug-in that brings HTML5 and other open web technologies to Internet Explorer.Google Wave . Recent JavaScript performance improvements and the emergence of HTML5 have enabled web applications to do things that could previously only be done by desktop software. One challenge developers face in using these new technologies is that they are not yet supported by Internet Explorer. Developers can't afford to ignore IE -- most people use some version of IE -- so they end up spending lots of time implementing work-arounds or limiting the functionality of their apps.single tag :<meta http-equiv = "X-UA-Compatible" content = "chrome=1" > WebKit-based rendering engine. It's that easy. For users, installing Google Chrome Frame will allow them to seamlessly enjoy modern web apps at blazing speeds, through the familiar interface of the version of IE that they are currently using.documentation . Please share your feedback in our discussion group and file any bugs you find through the Chromium issue tracker . (Cross-posted on the Chromium Blog ) By Amit Joshi, Alex Russell and Mike Smith, Google Chrome Frame Team
We are excited to open registration for our second round of Google Developer Day events this year:Android , Google Chrome , Google Wave , App Engine , AJAX APIs and more. There will also be time for developers to socialize - whether at "office hours" or the "after hours". You'll be able to chat about your latest project or discuss that brain-busting question with fellow developers and Google engineers.Google I/O event in the US, the Developer Days will host a developer sandbox area, highlighting partners who have used Google developer products to build their own unique applications. You can also take the opportunity to share a project or coding experience during our lightning talks. We look forward to seeing what developers bring to the table this year!register soon!By Alyssa England Sachs, Google Developer Programs
If you're a gadget developer, you've probably used the gadgets.* API, a re-namespaced and improved version of the original legacy , or _IG_*, gadgets API. The gadgets.* API has gained wide acceptance, both on Google and non-Google gadget containers, and is the standard API for gadget development.this post on the iGoogle developer blog.By Dan Holevoet, Developer Programs
On April 7th, Google launched a new version of Gmail for mobile for iPhone and Android-powered devices. We shared the behind-the-scenes story through this blog and decided to share more of what we've learned in a brief series of follow-up blog posts. This week, I'll talk about how modularization can be used to greatly reduce the startup latency of a web app. navigating away . Even if your application is blazing fast after it loads, the user may never get the chance to experience it.Network time to fetch the application (JavaScript + HTML) JavaScript parse time Code execution time to fetch the data and render the home page of your application How to Split Your Code into Modules High Level Functionality: A "Weather in my Favourite Cities" home page Click on a city to view the cities entire week forecast Weather data comes from an external web service Possible Module Separation: Weather data model Weather web service API Common UI widgets (buttons, toolbars, navigation, etc) Favourite Cities page City Weather Forecast page How to Lazy Load the Modules Option 1: Script as DOM <script type="text/JavaScript"> Option 2: XmlHttpRequest (XHR) <script type="text/JavaScript"> <html> http://code.google.com/speed .Previous posts from Gmail for Mobile HTML5 Series HTML5 and Webkit pave the way for mobile web applications Using AppCache to launch offline - Part 1 Using AppCache to launch offline - Part 2 Using AppCache to launch offline - Part 3 A Common API for Web Storage Suggestions for better performance Cache pattern for offline HTML5 web application By Bikin Chiu, Software Engineer, Google Mobile
In July, the Project Hosting team announced the People sub-tab where project members can easily document their duties within their projects.Lead by providing a project vision and roadmap Design new features, write code and unit tests Design core libraries, write code and unit tests Have fun hacking and learn new stuff! Test the system before each release Review code changes and provide constructive feedback Plan the scope of release milestones and track progress Lead the UI design and incorporate feedback Write end-user documentation and examples Triage new issues and support requests from end-users Be awesome ," to vicarious, "Watch nervously as students write code ," to self-effacing, "Create elaborate unit tests for small corners of the library, write hilariously malformed XML comments, and mercilessly break the build ," to simply practical leadership, "Buy the pizza for everyone else ."People sub-tab and start to document what you and your project team are supposed to be doing.By Jason Robbins, Google Code Team
