Gecko Text Attributes

Introduction

Text attributes are implemented in Firefox 3.5 (Gecko 1.9.1). You can obtain text attributes by nsIAccessibleText.getTextAttributes() method and nsIAccessibleText.defaultTextAttributes property.

language: Exposed if the language is specified in the text, see [RFC1766] for valid values. Primary language is defined by html:lang attribute.
invalid: Currently exposed if the text is misspelled (visually it's underlined by red line). Possible value is 'spelling'.
auto-generated: Set to "true" for list bullets or other static text in a document which is part of the layout but has no DOM node of its own. May be generated by CSS rules such as text inserted via a ::before or :after.

background-color: Background color, the value is exposed as string rgb(r, g, b) where r, g, b are 0-255 (see CSS background-color property).
color: Color, the value is exposed as string rgb(r, g, b) where r, g, b are 0-255 (see CSS color property).
font-family: Font name (see CSS font-family property).
font-style: Font style (see CSS font-style property).
font-size: Font size, exposed in 'pt' units, corresponds to font size of actually used font (see CSS font-size property).
font-weight: Font weight, the number from the list '100', ... '900', corresponds to font weight of actually used font. (see CSS font-weight property).
text-line-through-style: Exposed if there is a line (strike) through the text, the value is solid (corresponds to line-through value of CSS text-decoration property).
text-underline-style: Exposed if text is underlined, the value is solid (corresponds to underline value of CSS text-decoration property).
text-position: Specifies the vertical alignment of the text (see CSS vertical-align property).