- From: Al Gilman <asgilman@iamdigex.net>
- Date: Sat, 10 Jul 1999 10:30:10 -0400
- To: Wendy A Chisholm <chisholm@trace.wisc.edu>, w3c-wai-ua@w3.org, w3c-wai-pf@w3.org
At 05:46 PM 7/9/99 -0500, Wendy A Chisholm wrote: >although the alternative text for client-side image maps links is not shown >in IE and Netscape - they are available if you tab to them. Thus, as well >as being available in Lynx, HPR, etc., we decided it was not a problem. As >Jim states, however, it is an issue for server-side image maps. > [...]> >One bit of confusion is that in IE the alt-text of the image map image is >displayed as the tooltip. This is in the area of layering and bubbling and resolving contention for what entity responds to a given input. The IE behavior Wendy describes is not consistent with the bubble-up rules for event trapping in HTML 4.0, if I understand her right. For consistent feel of the UI, the tooltip daemon should fish in the same bubble-up waters as a script assigned to handle the onMouseOver event by the author. When the mouse is over a sensitive region, the information for that sensitive region should take precedence over the information for the whole map for ToolTip display. [As Wendy implied.] We [Wendy? Ian? -- Jon is on vacation] should check this with Microsoft for any other explanation, but I suspect that they would agree that what IE does now in this particular instance breaks the pattern and is not the best way for it to behave. This is an important technique under "UI should be consistent". There is a class of behaviors that includes at least ToolTips, the browser re-styling of link content in reponse to onMouseOver, and author scripts that revise the display under those conditions. There should be some consistency to these behaviors, and the behaviors that should be consistent include both behaviors put there by the static code of the browser and the document-specific code provided by the author. In particular the blending rules should help give the user interface a consistent feel across the behavior contributions from different sources. Al
Received on Saturday, 10 July 1999 10:24:14 UTC