API Support in Opera Presto 2.12

Contents

• File API
• Fullscreen API
• Geolocation API
• Page Visibility API
• Server-Sent Events (EventSource)
• WebSocket API
• Web Storage API
• Web Workers

File API

Current W3C reference:

File API

Documentation last updated at:

Editors' Draft 2012-05-07

Support information:

As of the last update, the editors' draft was supported with the exceptions listed below:

URL partial interface

Methods	Support
createObjectURL(…)	No
revokeObjectURL(…)	No

The following additional items are not supported:

• Loading from blob: urls

Fullscreen API

Current W3C reference:

Fullscreen

Documentation last updated at:

Editors' Draft 2012-02-07

Support information:

As of the last update, the editors' draft was fully supported.

Geolocation API

Current W3C reference:

Geolocation API Specification

Documentation last updated at:

Candidate Recommendation 2010-09-07

Support information:

As of the last update, the candidate recommendation was fully supported and functions as described below:

• User-enabled geolocation services are provided through Google Location Services (GLS). A user decides to share or not share their device location with a Web site based on trust; see section 4.2 of the W3C Geolocation API specification.
• IP address and WiFi recognition are implemented.
  • IP address recognition works with GLS by recognizing your IP address and telling you the cordinates based on it.
  • WiFi recognition works with GLS by gathering and then sending a list of all nearby wireless networks including MAC (Media Access Control) address, SSID (Service set identifier) name, and signal strength, which returns your coordinates.

Page Visibility API

Current W3C reference:

Page Visibility

Documentation last updated at:

Editors' Draft 2012-07-10

Support information:

As of the last update, the editors' draft was supported as follows:

• The visible and hidden states are supported
• Events are only sent when the platform signals the window or tab visibility is changing

Server-Sent Events (EventSource)

Current W3C reference:

Server-Sent Events

Documentation last updated at:

Working Draft 2012-04-26

Support information:

As of the last update, the working draft was fully supported.

WebSocket API

Current W3C and WebSocket Protocol reference:

The WebSocket API

RFC 6455 - The WebSocket Protocol

Documentation last updated at:

Working Draft 2012-05-24

Support information:

As of the last update, the working draft was fully supported.

Web Storage API

Current W3C reference:

Web Storage

Documentation last updated at:

Candidate Recommendation 2011-12-08

Support information:

As of the last update, the candidate recommendation was fully supported.

Web Workers

Current W3C reference:

Web Workers

Documentation last updated at:

Working Draft 2011-02-08

Support information:

As of the last update, the working draft was fully supported.