Opening a link in a new window?

[jennifer.johns@…]

What code is necessary for me to create a link that will open in a new window, as opposed to opening within the existing window? I am including a link on a new webpage on gsa.gov that will take the customer away from the GSA site and onto a non-government site.

[Remy Blank]

That's not really possible with a stock Trac. The usual way to do this is to add a target="_blank" attribute to the <a> tag of the link. But Trac is generating XHTML 1.0 Strict, and the target attribute doesn't exist in that DTD.

You could write a small plugin with a macro that expands to a <a href="javascript:window.open(...)"> tag, or adds a new form of TracLinks for this purpose. Maybe there's even already one on trac-hacks.

Actually, this could even be a good addition to Trac core. For example, we could extend the [realm:resource] syntax, where a ^ prefix to the realm would mean "open in a new window" (e.g. [^wiki:WikiStart]). Or something more intuitive.

[rpg2424@…]

Replying to rblank:

That's not really possible with a stock Trac. The usual way to do this is to add a target="_blank" attribute to the <a> tag of the link. But Trac is generating XHTML 1.0 Strict, and the target attribute doesn't exist in that DTD.

Change it and make it work please, hiding behind DTD is crippling the software.

[Remy Blank]

Replying to rpg2424@…:

Change it and make it work please, hiding behind DTD is crippling the software.

Thanks for the patch. Oh, wait, no patch to be found. Never mind…

[gavenkoa <gavenkoa@…>]

New HTML 5 standard allow use of target for a tag:

• ​http://www.whatwg.org/specs/web-apps/current-work/multipage/browsers.html#browsing-context
• ​http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#attr-hyperlink-target
• ​http://stackoverflow.com/questions/4198788/is-it-alright-use-to-target-blank-in-html5

Quotation from ​http://www.w3.org/TR/html5-diff/ :

The target attribute of the a and area elements is no longer deprecated,
as it is useful in Web applications, e.g. in conjunction with iframe. 

[Carsten Klein <trancesilken@…>]

AFAIK I have some code flying around here somewhere that would add links to the wiki that will open in a new window/tab. I have to dig out my old repositories but I am sure that I can find it.

[Ryan J Ollos]

Since milestone:1.0.2 (#11127) we have the trac-target-new class. It sounds like the only thing needed for this ticket is a way to decorate TracLinks with the class.

Visit <a class="trac-target-new" href="http://genshi.edgewall.org">Genshi</a> for a great Python templating engine!

Visit Genshi for a great Python templating engine!

[tim@…]

Being able to specify arbitrary links to open in a new tab improve my ability to write good documentation (also see #9134).

Until this is resolved within Trac, ​ExtLinkRewriterPlugin – Trac Hacks can be used to achieve the same results (albeit for all links of the specified protocols).