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https://issues.apache.org/jira/browse/BATIK-1307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ahmed Hussain updated BATIK-1307:
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Priority: Minor (was: Major)
> CSS class change on group does not trigger update
> -------------------------------------------------
>
> Key: BATIK-1307
> URL: https://issues.apache.org/jira/browse/BATIK-1307
> Project: Batik
> Issue Type: Bug
> Components: SVG DOM
> Affects Versions: 1.13
> Environment: Mac OS 11.13.1
> Reporter: Ahmed Hussain
> Priority: Minor
> Attachments: complicated-css.svg, simple-css.svg
>
>
> I'm using as an embedded component for diagrams in a project. I was trying to
> add some interaction, highlighting nodes and edges on mouse over. I am doing
> this from Java by hit testing on mouse-move, then modifying the DOM
> accordingly; this is much easier for my use case than adding javascript event
> handlers.
> Since I have control over the top-level embedded CSS style block, it is
> easiest to put all the styling I require for highlighting into that, then
> toggle a 'highlight' class on and off when the mouse moves over a particular
> DOM element.
> The problem I have run into is that the change to the class attribute doesn't
> seem to take effect in certain circumstances. My hunch is that the problem is
> that this occurs when the CSS acts indirectly. If you see the attached
> simple-css.svg, I can toggle 'highlight' programmatically on any of the
> rectangle objects and this correctly causes the styles to get updated, and
> the diagram to be repainted.
> However, in complicated-css.svg this does not work. In theory I should be
> able to highlight the nodes or edges by adding a highlight css class to the
> grouping nodes e2, e6 etc. If I do this before loading the document, this
> renders fine. But if I toggle it programmatically on a live DOM, this does
> not get detected as triggering a style change. I can 'nudge' it by adding a
> stroke='red' attribute to the group - that then causes the rendering to
> change appropriately.
> Assume it's something to do with event propagation/dirty DOM detection but
> haven't managed to figure out where.
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