RFR: 8369531: Wrong tooltip used in external class links [v2]

[Chen Liang]

On Tue, 25 Nov 2025 14:26:23 GMT, Hannes Wallnöfer <hannesw at openjdk.org> wrote:

>> Please review a change to use the same title attribute (tooltip) in external class links as in internal ones. 
>> 
>> Currently, links to external types and their members always use `class or interface in x.y.z` as tooltip. This is unecessarily generic for type links, because we actually know whether it is a class or an interface, and already have the correct tooltip message. For member links, it is misleading because the link target is not the class or interface.
>> 
>> With this change, external links use the same tooltip as internal ones. Links to top-level types specify whether it is a class or interface. Links to methods use the method signature as tooltip if the link label only contains the method name. For other members, the no tooltip is set. 
>> 
>> I'm also removing the `doclet.Href_Class_Or_Interface_Title` message because it is not used anymore.
>
> Hannes Wallnöfer has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add @bug id

Looks simple and clean.

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Marked as reviewed by liach (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28491#pullrequestreview-3511052187