Chromium Blog: June 2015

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Chromium Blog

News and developments from the open source browser project

File System Provider API for easier file management

Thursday, June 11, 2015

On Chrome OS, users should be able to work with files in the cloud as easily as they work with local files. Today, users often have their files spread all over the cloud -- with documents in one place, their photos in another, and videos somewhere else. Working across all of those systems can be a challenge, which is where the File System Provider API in Chrome OS can help. With the File System Provider API, users who install your Chrome App can have your Cloud service seamlessly integrated into the Chrome OS Files app. Working with multiple storage backends becomes as easy as dragging and dropping files locally.
As usual, users can install your Chrome app or extension from the Chrome Web Store. Or, they can add new services directly from the Files app. The new file system will then appear directly in the left navigation column. Users can browse this file system anywhere the Files app is shown, including Save as and Open dialogs.
Screenshot 2015-04-29 at 12.36.48 PM.png

Screenshot 2015-04-29 at 12.36.48 PM.png

Your extension just needs to call chrome.fileSystemProvider.mount and respond to the listed events. Developers have already created some great apps, including the Box.com official client, an SMB client, and even a way to browse TED talks locally. Check out the documentation or join the mailing list to stay informed about announcements and API changes.
Posted by Tomasz Mikolajewski, Filesystem Fiend

Chrome 44 Beta: Improvements to Notifications API and promoted add to homescreen

Tuesday, June 2, 2015

The newest Chrome Beta channel release includes new ES6 features and a number of updates to existing APIs. Unless otherwise noted, changes described below apply to Chrome for Android, Windows, Mac, Linux and Chrome OS. Improved notification capabilities Chrome 42 allowed users to opt in to receive push notifications from sites even after the page is closed. Sites may now use getNotifications to observe which of their notifications are still being displayed, and Notification.data to store a payload with a notification so they can determine which notification was clicked. Promoted add to homescreen improvements Since Chrome 42, users who frequently visited a high-quality web app on Android saw a banner allowing them to add the site to their home screen in one tap. In this release Chrome fires a cancellable beforeinstallprompt event before the banner is shown, allowing developers to measure user interaction with the feature. Developers are also now able to offer the banner for their native Android app. ES6 computed property names Until now, developers defining a JavaScript object literal needed to know the names of all of its properties before runtime. This release increase the expressiveness of the object literal syntax by providing support for ES6 computed property names, allowing developers to put an expression in brackets [], to be computed as the property name at runtime.
let propertyName = "foo"; let obj = { [propertyName + "IsTrue"]: true, contains: 12 };
Other updates in this release

Chrome’s implementation of the Push API has undergone several minor breaking changes in order to keep up to date with the evolving specification.

ES6 extended Unicode escape sequences allow developers to use the extended set of Unicode characters in JavaScript string literals, where previously characters whose escape sequences contain more than four hexadecimal values were unable to be denoted.

This release includes a new implementation of multi-column layout by Opera engineer Morten Stenshorne, solving historic issues with incorrect column balancing.

Developers should now use the scroll attributes of document.scrollingElement instead of document.body as the latter has several well known issues.

As always, visit chromestatus.com/features for a complete overview of Chrome’s developer features, and circle +Google Chrome Developers for more frequent updates.
Posted by Peter Beverloo, Software Engineer and Notification Newsmaker

Labels: beta

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