Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Struts Wiki" for change 
notification.

The following page has been changed by MichaelJouravlev:
http://wiki.apache.org/struts/NewWindowFromAction

New page:
How to display the response it a different window (a.k.a. How to change form 
target in action?)

By Frank Zammetti, extracted from StrutsSolutions page.

Simply put, there is no way to do this.  Opening a new window is a strictly 
client-side activity.  You have to "fake it".  There's two ways to do it...

First, you could simply target your HTML form using the target="_blank" 
attribute.  This will result in whatever response the server sends back 
appearing in a new window.  The down-side to this is you have to know 
before-hand to do this.  If you want a variable solution, you have to get into 
scripting... You can set the target attribute's value via client-side scripting 
as appropiate before submitting the form.

Second, you could have a check in all JSP's that looks for some flag in the 
request object.  When present, the JSP inserts an onLoad Javascript event 
handler that opens the new window and redirects to the URL where the content 
can be found.

Another possibility if you are using frames is to target all form submissions 
to a hidden frame.  Include in all pages some Javascript that performs some 
checks and handles things accordingly... I use this in one system I wrote... 
The checks I'm speaking of are based on some flag value in the request object 
(just insert the value into a page-level Javascript variable)... The flag may 
direct the page to copy itself to the main display frame, or to a new window.  
The former is a very nice way to have a "Please Wait" screen while the server 
is processing.  The later is the same basic idea, but in a new window.  This 
also allows you to do some nice error handling things, such as simply hiding 
the Please Wait layer in the main frame to expose the page as it existed before 
the form was submitted.  Nice way to debuild a page without incurring any 
server time.  But now I'm getting off on a tangent :)

The bottom-line here is this: There is no way to direct the browser to open the 
response in a new window from an Action.  You either have to indicate you want 
this behavior when the form is submitted, or make it happen with scripting once 
the response is back at the browser.  At least, this is true within the 
confines of plain old HTML... You could always pull an applet out and do 
something like this!

Reply via email to