Widget Packaging and Configuration

Marcos Cáceres

Citation
Marcos Cáceres, Widget Packaging and Configuration, World Wide Web Consortium, Working Draft WD-widgets-20110322, March 2011.
Descriptions
Abstract:

This specification standardizes a packaging format and metadata for a class of software known as widgets. Unlike traditional user interface widgets (e.g., buttons, input boxes, toolbars, etc.), widgets as specified in this document are full-fledged client-side applications that are authored using technologies such as HTML5 and then packaged for distribution. Examples range from simple clocks, stock tickers, news casters, games and weather forecasters, to complex applications that pull data from multiple sources to be "mashed-up" and presented to a user in some interesting and useful way. The specification relies on PKWare's Zip specification as the archive format, XML as a configuration document format, and a series of steps that runtimes follow when processing and verifying various aspects of a package. The packaging format acts as a container for files used by a widget. The configuration document is an XML vocabulary that declares metadata and configuration parameters for a widget. The steps for processing a widget package describe the expected behavior and means of error handling for runtimes while processing the packaging format, configuration document, and other relevant files. This specification is part of the Widgets family of specifications, which together standardize widgets as a whole.

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