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New version of the Roadmap of Web Applications on Mobile

7 August 2018 | Archive

icon representing mobile life-cycleW3C has published a new version of its Roadmap of Web Applications on Mobile, an overview of the various technologies developed in W3C that increase the capabilities of Web applications, and how they apply more specifically to the mobile context.

The contents of the roadmap have been updated to follow the evolution of the Web platform since April 2018. See the Change history for details. Most of these updates focused on mechanisms that allow mobile web applications to tweak performance settings and gain finer-grained control over the browser’s default behavior. In particular, new exploratory work and technologies in progress mentioned in the Performance and Tuning page include:

  • the CSS Animation Worklet API to create scripted animations in a dedicated thread,
  • the CSS contain property to indicate that an element’s subtree is independent of the rest of the page,
  • the proposed CSS overscroll-behavior property to control the behavior of a scroll container when its scrollport reaches the boundary of its scroll box,
  • the Event Timing Web Perf API to measure the latency of events triggered by user interaction,
  • the Identifiers for WebRTC’s Statistics API to monitor the performance of the network and media pipeline in peer-to-peer scenarios, and
  • Priority Hints to let developers signal the priority of each resource they need to download.

The roadmap did not mention WebDriver, recently published as a W3C Recommendation, a key technology for mobile web developers as it enables automated testing across browsers and devices. This was an oversight, fixed in this new version.

The implementation info rendered in tables now also embeds information from the MDN Browser Compatibility Data project. A new “partial” badge also indicates that an implementation may be incomplete, either because it is, or because implementation data is not complete enough to assess support of the entire specification.

Sponsored by Beihang University, this project is part of a set of roadmaps under development in a GitHub repository to document existing standards, highlight ongoing standardization efforts, point out topics under incubation, and discuss technical gaps that may need to be addressed in the future. New versions will be published on a quarterly basis, or as needed depending on progress of key technologies of the Web platform. We encourage the community to review them and raise comments, or suggest new ones, in the repository’s issue tracker.

Call for Review: Selectors Level 3 is a W3C Proposed Recommendation

11 September 2018 | Archive

The CSS Working Group has published a Proposed Recommendation of Selectors Level 3. Selectors are patterns that match against elements in a tree, and as such form one of several technologies that can be used to select nodes in an XML document. Selectors have been optimized for use with HTML and XML, and are designed to be usable in performance-critical code. This document describes the selectors that already exist in CSS1 [CSS1] and CSS2 [CSS21], and further introduces new selectors for CSS3 and other languages that may need them.

Comments are welcome through 12 October 2018.

First Public Working Drafts: JSON-LD 1.1 Syntax, JSON-LD 1.1 Processing Algorithms and API, and JSON-LD 1.1 Framing

11 September 2018 | Archive

The W3C JSON-LD Working Group has published three First Public Working Drafts today.

  • The JSON-LD 1.1 Syntax document defines a JSON-based format to serialize Linked Data. The syntax is designed to easily integrate into deployed systems that already use JSON, and provides a smooth upgrade path from JSON to JSON-LD. It is primarily intended to be a way to use Linked Data in Web-based programming environments, to build interoperable Web services, and to store Linked Data in JSON-based storage engines. The 1.1 version of this specification will extend the existing JSON-LD 1.0 Recommendation, published in 2014.

  • The JSON-LD 1.1 Processing Algorithms and API document defines a set of algorithms for programmatic transformations of JSON-LD documents. Restructuring data according to the defined transformations often dramatically simplifies its usage. Furthermore, this document proposes an Application Programming Interface (API) for developers implementing the specified algorithms. The 1.1 version of this specification will extend the existing JSON-LD Processing Algorithms and API Recommendation, published in 2014.

  • The JSON-LD 1.1 Framing document defines an approach that allows developers to query by example and force a specific tree layout to a JSON-LD document.

All three documents are derived from Community Group Reports published by the JSON for Linking Data W3C Community Group.

The Working Group welcomes comments via the GitHub repository issues (see the respective documents’ headers for the reference of the repositories).

W3C Invites Implementations of CSS Display Module Level 3

28 August 2018 | Archive

The CSS Working Group invites implementations of CSS Display Module Level 3 Candidate Recommendation. This module describes how the CSS formatting box tree is generated from the document element tree and defines the ‘display’ property that controls it.

CSS is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, in speech, etc.

W3C Invites Implementations of CSS Cascading and Inheritance Level 3; Level 4

28 August 2018 | Archive

The CSS Working Group invites implementations of two updated Candidate Recommendations of CSS Cascading and Inheritance Level 3 and CSS Cascading and Inheritance Level 4. The CSS module defined in these documents describes how to collate style rules and assign values to all properties on all elements. By way of cascading and inheritance, values are propagated for all properties on all elements. New in the Level 4 are the ‘revert’ keyword and <supports-condition> for the ‘@import’ rule.

CSS is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, in speech, etc.

First Public Working Draft: Geolocation Sensor

21 August 2018 | Archive

The Devices and Sensors Working Group has published a First Public Working Draft of Geolocation Sensor. This specification defines the GeolocationSensor interface for obtaining geolocation of the hosting device.

Call for Review: CSS Fonts Module Level 3 is a W3C Proposed Recommendation

14 August 2018 | Archive

The CSS Working Group has published a Proposed Recommendation of CSS Fonts Module Level 3. This CSS3 module describes how font properties are specified and how font resources are loaded dynamically. The contents of this specification are a consolidation of content previously divided into CSS3 Fonts and CSS3 Web Fonts modules. The description of font load events was moved into the CSS Font Loading module.

Comments are welcome through 11 September 2018.

Upcoming W3C Workshop on Permissions and User Consent

12 July 2018 | Archive

Man pressing button on display with padlockW3C announced today a W3C Workshop on Permissions and User Consent, September 26-27, 2018, in San Diego, California, USA. The event is hosted by Qualcomm.

The primary goal of the workshop is to bring together security and privacy experts, UI/UX researchers, browser vendors, mobile OS developers, API authors, Web publishers and users to address the privacy, security and usability challenges presented by a complex and overlapping variety of permissions and consent systems available for hardware sensors, device capabilities and applications on the Web.

The scope includes:

  • user consent;
  • bundling of permissions;
  • lifetime/duration of permissions;
  • permission inheritance to iframes and other embedded elements;
  • relation to same origin policy;
  • UIs and controls;
  • interaction with private browsing modes;
  • implicit permission grants;
  • progressive permission grants;
  • cross-stack permissions: how OS, browser, and web app permissions interact;
  • permission transparency;
  • relation to regulatory requirements;
  • special considerations for systems that use the browser as a pass-through
  • permissions/transparency/UI as it relates to display-less devices that connect to the Internet.

For more information on the workshop, please see the workshop details and submission instructions. Expression of Interest and position statements are due by August 17, 2018.

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