Web specifications support in Opera Presto 2.12

Last update

2013-01-24

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Overview

Web specifications added since Opera Presto 2.11

• core-integration-points 355 through 359
• core-integration-points 360 through 364
• core-integration-points 365 through 374
• core-integration-points 375 through 378
• core-integration-points 379 through 395
• core-integration-points 396 through 406
• core-integration-points 407 through 423

Opera Presto web specification support pages

Overview

Opera Presto rendering engine

This document and its associated support tables apply specifically to the Opera Presto 2.12 rendering engine. It incorporates Opera Presto web specification support with the latest Core Milestone and integration point. Changes and additions occurring since Opera Presto 2.11 are identified with their specific Core Milestone integration points. Please see the following Core Milestone integration points added since Opera Presto 2.11 topic.

Opera desktop, device, and mobile products

Opera products use and depend upon various parts of the Opera Presto rendering engine and its web specification features. It is important to note that while the latest Opera Presto rendering engine has incorporated new web specification features, they may not have been added to the latest released versions of Opera products.

The Opera user agent string

Opera products will identify which Opera Presto version and core-integration-point they are using in their user agent string. Depending on your Opera product, the Opera user agent string is placed in the "About Opera" page, found by typing opera:about in the address bar, or by clicking "Help > About Opera" in the Menu.

Example:

    Opera/9.80 (Windows NT 5.1; U; Edition Next; en) Presto/2.12.355 Version/12.xx

This example user agent string describes the Opera Presto 2.12 (Presto/2.12) rendering engine, incorporating up to core-integration-point 355 (.355).

A high-level overview of current web specifications support in Opera products is available on opera.com at: Web specifications support in Opera products: an overview.

Opera articles

For further reference, and where applicable, Opera web specification support table documents now contain hyperlinks to Opera technical articles written by leading subject matter experts. These are sourced from Opera's extensive developer website, dev.opera.com.

Web specifications added since Opera Presto 2.11

Important note

The following web specification items integrated into the Opera Presto rendering engine are identified with their (Presto/2.12.xxx) core-integration-point numbers. This identifies which web specifications are included with Opera product versions, as shown in their user agent strings. Please see the preceding description in The Opera user agent string topic, to associate Opera product versions with the Opera Presto core-integration-points they contain.

Implemented in core-integration-points 355 through 359

High Resolution Time

Disable performance.now() (Presto/2.12.355)

• performance.now() will be re-enabled when the Navigation Timing API is fully implemented
• See: High Resolution Time
• See: Navigation Timing

Web Workers

Update SharedWorker connect events to use .source (Presto/2.12.355)

• Latest specification allows 'incoming' port for a SharedWorker to be communicated via source as well as ports[0]
• See: Web Workers

HTML5

Remove input.selectedOption (Presto/2.12.355)

• Matches latest specification, which has removed this attribute
• See: The input element - HTML5

Implemented in core-integration-points 360 through 364

HTML5

Add support for the <track> element and WebVTT (Presto/2.12.361)

• See: The track element - HTML5
• See: WebVTT Standard

User Agent

Add support for Device-Stock-UA header (Presto/2.12.362)

CSS TV Profile

Change default state of preload to auto (Presto/2.12.362)

• See: CSS TV Profile 1.0

CSS3

Update CSS3 - Gradients support (Presto/2.12.364)

• Update Gradients support to match latest specification
• Remove -o- prefix for CSS gradients
• See: CSS Image Values and Replaced Content Module Level 3

Implemented in core-integration-points 365 through 374

HTML5

Add support for the selectionDirection property on input and textArea elements (Presto/2.12.370)

• See: APIs for the text field selections - HTML5

Add support for the reversed attribute on ordered lists (Presto/2.12.372)

• See: The ol element - HTML5

CSS3

Add support for nested @media rules (Presto/2.12.374)

• See: CSS Conditional Rules Module Level 3

Implemented in core-integration-points 375 through 378

SPDY

Add support for the SPDY protocol (Presto/2.12.376)

• Add support for Draft 2 of the SPDY protocol
• See: SPDY Protocol - Draft 2

• Add support for Draft 3 of the SPDY protocol
• See: SPDY Protocol - Draft 3

Implemented in core-integration-points 379 through 395

WebP

Upgrade libwebp to version 0.2.0: lossless WebP images are now supported (Presto/2.12.382)

• See: WebP API Documentation (draft)

CSS3

Add partial support for resize property (Presto/2.12.389)

• none, both, vertical and horizontal are supported for <textarea>, with both on by default.
• See: CSS Basic User Interface Module Level 3

Re-add -o- prefix and legacy syntax for linear-gradient, transition, transform (Presto/2.12.392)

• See: CSS3 2D Transforms support in Opera Presto 2.12
• See: CSS3 2D Transitions support in Opera Presto 2.12
• See: CSS3 Image Values / Replaced Content support in Opera Presto 2.12
• See: CSS -o- vendor extensions support in Opera Presto 2.12

DOM

Add support for new DOM4 Node methods (Presto/2.12.392)

• See: DOM4

Make title parameter of createHTMLDocument optional as per spec (Presto/2.12.394)

• See: DOM

WebGL

Add support for WebGL float texture extensions (Presto/2.12.394)

• See: WebGL OES_texture_half_float Extension Specification
• See: WebGL OES_texture_float Extension Specification

Elliptic Curve Cryptography

Add support for Elliptic Curve Cryptography (Presto/2.12.395)

• See: Elliptic Curve Cryptography (ECC) Cipher Suites for Transport Layer Security (TLS)

Implemented in core-integration-points 396 through 406

Service Discovery API

Add support for a subset of the Service Discovery API (disabled by default) (Presto/2.12.397)

• Add discovery of UPnP devices; add communication with detected devices via XHR; add the following DOM interfaces from the Network Service Discovery specification: getNetworkServices, the NetworkServices interface and NetworkService interface without onmessage.
• See: Network Service Discovery
• See: Network Service Discovery API support in Opera

CSS3

Add support for @supports (Presto/2.12.401)

• See: CSS Conditional Rules Module Level 3

Add support for Flexbox (Presto/2.12.403)

• Apart from full (unprefixed) support for the latest version of the spec, this also includes limited emulation of WebKit's implementation of the 2009-07-23 working draft version of the spec (-webkit- prefixed only), which is widely used on the web.
• See: CSS Flexible Box Layout Module
• See: The old version only supported as -webkit- prefixed
• See: Support for selected -webkit- prefixed properties

HTML5

Add support for <track> subtitles/captions (Presto/2.12.402)

• See: The track element

Implemented in core-integration-points 407 through 423

HTML5

Add support for link.relList + a.relList (Presto/2.12.407)

• See: Text-level semantics

Add DOM4 support for DOMTokenList.add() + remove() (Presto/2.12.407)

• See: DOM4

Spatial navigation

Spatial navigation, which allows you to move focus to any link or form input using shift + arrow keys, no longer highlights links that are invisible due to z-index stacking (Presto/2.12.417)

Opera web specification support pages