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https://issues.apache.org/jira/browse/TAP5-171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Strand updated TAP5-171:
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Attachment: TAP5-171 5.2.4.patch
Now that Tapestry 5.2 is back to using SAX this issue might be worth looking
into again.
The problem is that certain default attribute values are rendered in the
resulting HTML eventhough they are not present in the template. Specifically,
every <a> element in a template automatically gets a shape="rect" attribute in
the rendered HTML.
I adapted Folke's patch to 5.2.4 and also added a small testcase.
> Filter out attributes with default value (from DTD) when parsing templates
> --------------------------------------------------------------------------
>
> Key: TAP5-171
> URL: https://issues.apache.org/jira/browse/TAP5-171
> Project: Tapestry 5
> Issue Type: Improvement
> Components: tapestry-core
> Affects Versions: 5.0.18
> Environment: Sun JDK 1.5
> Reporter: Folke Behrens
> Assignee: Howard M. Lewis Ship
> Priority: Minor
> Attachments: attributes2-dtd-default.patch, TAP5-171 5.2.4.patch,
> Test.html
>
>
> Consider testing for org.xml.sax.ext.Attributes2 and use
> Attributes2.isSpecified(int) to check if the attribute is really specified or
> just a default declaration.
> With this you can e.g. test if <a shape="rect" > is really set. Test for
> "http://xml.org/sax/features/use-attributes2"; or just use "instanceof":
> if (attributes instanceof Attributes2) {
> if (( (Attributes2)attributes ).isSpecified(i)) {
> // do something
> }
> }
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