[BATIK-927] Batik should display anchor "xlink:title" attribute contents as a tooltip

• Type: Bug
• Status: Open
• Resolution: Unresolved
• Affects Version/s: 1.8
• Component/s: Bridge
• Environment: Operating System: All; Platform: All
• Assignee: Batik Developer's Mailing list
• Reporter: Helder Magalhães
• Created: 28/Oct/09 06:57
• Updated: 28/Oct/09 09:11

Description

A tooltip is not displayed whenever a anchor ("a" element) has the "xlink:title" attribute [1] set.

Batik already displays the contents of "title" and "desc" elements as tooltips, as suggested by the SVG specification [2], so I'd say we should also display the link title.

I'm not sure how precedence should be handled (when a given link has "xlink:title" attribute and child "title"/"desc" elements), but it is suggested [3] that "xlink:title", when set, should take precedence over the other.

A current workaround consists of adding a "title" child element to the anchor with the same content as the "xlink:title" attribute, which is then rendered by Batik. A test case with this idea was implemented [4] during experiments in order to force a pointer cursor in ASV3: one would expect a tooltip when hovering on the blue (leftmost) circle.

[1] http://www.w3.org/TR/SVG/struct.html#XLinkTitleAttribute
[2] http://www.w3.org/TR/SVG/struct.html#DescriptionAndTitleElements
[3] http://www.w3.org/Graphics/SVG/IG/wiki/Accessibility_Activity#Title_As_Tooltip
[4] http://heldermagalhaes.com/stuff/svg/hacks/ASV3-EmulatePointerCursor.svg