Hi Puneet,
Good to hear you have a solution. Item 3 in your list is exactly the
situation I describe. Would you mind sharing the code with the user group ?
Thanks
James
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: 28 July 2004 05:15
To: Struts Users Mailing List
Subject: RE: Back navigation using application back buttons
I beleive this is really a desired feature, and I have a piece of code for
doing all this.
Which extends DispatchAction and RequestProcessor.
We needed this for
1. BreadCrumbs
2. Wizard type of Screen
3. A situation when particular screen was being invoked from multiple
places and there was a back button on the called screen.
Puneet Agarwal
Tata Consultancy Services
Mailto: [EMAIL PROTECTED]
Website: http://www.tcs.com
[EMAIL PROTECTED]
07/28/2004 05:14 AM
Please respond to
"Struts Users Mailing List" <[EMAIL PROTECTED]>
To
"Struts Users Mailing List" <[EMAIL PROTECTED]>
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Subject
RE: Back navigation using application back buttons
Hi there,
Another way to implement this is to *use* the struts config file. In my
case I have a multi page form over four pages. All submissions are handled
by the same Action class. However, the action is different for each form.
For example:
Page1:
<form action="ProcessPage1">
<input type="hidden" name="page" value="1">
...
</form>
Page2:
<form action="ProcessPage2">
<input type="hidden" name="page" value="2">
...
</form>
Both ProcessPage1 and ProcessPage2 are mapped to the same Action class.
After processing the form, the Action will return a forward mapping
of "back", "next", "print" or anything else that may be required depending
on the button clicked in the page.
Since there are individual mappings, I can use local forwards to control
where to go; for example:
<action path="/ProcessPage1" type="com.foo.ProcessFormAction" name
="myform" scope="session" input="page1">
<forward name="next" path="/jsp/page2.jsp" />
<forward name="cancel" path="/jsp/maybe_next_time.jsp" />
</action>
<action path="/ProcessPage2" type="com.foo.ProcessFormAction" name
="myform" scope="session" input="page2">
<forward name="back" path="/jsp/page1.jsp" />
<forward name="next" path="/jsp/page3.jsp" />
<forward name="print" path="/jsp/page2.jsp" />
</action>
Cheers, Martin
"Meier, Niclas" <[EMAIL PROTECTED]>
28/07/2004 06:06
Please respond to
"Struts Users Mailing List" <[EMAIL PROTECTED]>
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Subject
RE: Back navigation using application back buttons
Hello,
You can try two hidden fields fort he 'currentPage' and 'lastPage'. When
you submit any form with the 'next'-Button you can evalute the request
determine the next page in your process. If you proceed with the back
button, you can go back the the last page:
Example 1
Page 1 (c:1, l:undef) -[fwd]-> Page 2 (c:2, l:1) -[back]-> Page 1 (c:1,
l:2)
Example 2
Page 1 (c:1, l:undef) -[fwd]-> Page 3 (c:3, l:1) -[fwd]-> Page 2 (c:2,
l:3) -[back]-> Page 3 (c:3, l:2)
You can implement this function into Abstract classes (From and Action) to
handle the whole navigation. Or you create a dispatcher which all pages
configured into.
<action path="/foo/dispatcher" name="naviForm"
type="com.foo.struts.DispatcherAction">
<forward name="1" path="/pages/page1.jsp"/>
<forward name="2" path="/pages/page2.jsp"/>
<forward name="3" path="/pages/page2.jsp"/>
</action>
A good idea maybe the seperation of request handling of the page form,
which is related to the page and some stuff you need to prepare the view.
I often use this pattern with great success.
{Form on Page 1} -[submit]-> FormOneRequestHandlingAction -[forward]->
DispatcherAction -[forward]-> ViewPreparingActionPageTwo -[forward] ->
Page2.jsp
The first two actions can decide to return to page 1 and the third action
will always forward to the jsp.
Regards
Niclas
-----Original Message-----
From: James Sheridan [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 27, 2004 4:51 PM
To: '[EMAIL PROTECTED]'
Subject: Back navigation using application back buttons
Hi,
I am trying to implement a simple Back mechanism which uses Back buttons
in
the page (encouraging users to use this rather than browser Back which is
not a good idea). Lets call the pages Page1 and Page2. A Page 1 action
brings user to Page 2. Page 2 has a Back button. The basic mechanism is
trivial, ie. an action handler for Page 2 Back which forwards to Page1.
However the problem is I want to be able to go Back to pages other than
Page1 since the user can also get to Page 2 via Page3. ie. I want to be
able
to do
Page1->Page2->(back)->Page1
Page1->Page3->Page2->(back)->Page3
Is there some way to control the forwarding for the Page2 Back handling
and
know which page to go back to ? The 'static' mappings I would set up in
struts-config.xml appear to only allow me to configure navigation back to
one specific page. I was considering implementing a 'page stack' object
and
passing it as a session attribute but I would have hoped that the Struts
framework would make this possible in some easy way.
I suppose some of the wizard ideas might help but a wizard is essentially
different from what I cam trying to achieve in the sense that Back in a
wizard always go back to a specific page.
Any help would be greatly appreciated.
-- James
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