Tab Widget Requirements
Written by danm
Last modified by danm on 15 Mar 99
Overview
This document is a list
of features planned for implementation in the tab widget. The tab widget is
our name for that well-known control which allows the display of more than one
set of content in just one window display rectangle. The different sets of content
available for display are listed in a line of buttons made to look like labels
on notebook dividers.
Requirements
- The widget maintains a tree of children, each child subtree corresponding to a tab's contents. The widget controls a layout rectangle. Only the subtree corresponding to the currently selected tab is visible.
- Responds to these style settings
- Font for tab label text
- Height and width of tab buttons
- Background colour
Possible Requirements
(think of these as excluded, though the author is more willing to consider putting them in than features in the "excluded" list)
- Mouse feedback while punching a tab -- most controls have mouse feedback, but this seems optional in tab controls (generally, Windows tab controls offer no feedback).
- Icons in the tab labels, rather than just text
- Responding to these style settings
- Configurable background image
- Configurable (platform-specific) behaviour -- whether each tab triggers on mousedown or mouseup.
- Rollover feedback
Excluded Features
The authors at this time specifically do not intend to implement these arguably desirable features
- vertical tabs
- multiple rows of tabs
- scrolling tabs
- inline editing of the tab text (hey, we're trying to be complete!)
Questions, comments, or concerns about this document should go to netscape.public.mozilla.xpfe