Re: How To Download Excel File?

2009-03-31 Thread UPBrandon

Check out my responses in this discussion...
http://www.nabble.com/Opening-DynamicWebResource-from-Button-AjaxButton--td15459841.html#a21462901
I had some trouble getting generated files to download right at first.  They
either caused Wicket to become non-responsive or I couldn't provide a file
name or MIME type.  The solution I eventually came up with works very well.

-Brandon


wadi wrote:
 
 Hi All, I would like to know how can I put a link into a page so when the
 user clicks I fetch some data from database , export it to Excel so the
 user
 directly downloads an xls file with the content.
 
 Any help is appreciated,
 
 Thanks in advance,
 
 Wadi
 
 
 

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Re: Page Maps and Expirations

2009-01-23 Thread UPBrandon

Thanks again.  I am still interested in page stores though.  I'm not saying
they are related to the expiration issue but I am curious how do they manage
themselves.  I haven't been able to find much info online.  Does each one
just store a potentially unlimited number of pages or is there some resource
management going on?


Matej Knopp-2 wrote:
 
 Hi,
 
 wicket holds the last accessed page in pagemap and certain number of
 previous pages in DiskPageStore (serialized on disk). The last
 accessed page should never be evicted from pagemap and even if it was,
 it would still be stored on disk.
 
 -Matej
 
 On Fri, Jan 23, 2009 at 12:19 AM, UPBrandon bcr...@up.com wrote:

 Thanks Matej and Igor.  We are using sticky sessions (I can even see the
 JSESSIONID in requests) and since a session sticks to a certain
 server/instance, there shouldn't be any need for replicating sessions
 among
 instances.  There are dozens and dozens of web apps here and losing
 sessions
 hasn't been an issue.  Would it make any difference if I said that
 sometime
 a user may get a page expired error only 30 seconds after the last page
 request?  But this is a problem that only happens occasionally and
 supposedly under high load.

 Either way, I would still be interested in knowing more about how
 Wicket's
 session store works.
 - Under what circumstances are pages evicted from a page map?
 - Is there a limit on how many pages can be stored in a single page map?
 - Are there any global (per Wicket instance, not per map or session)
 limits on how many pages are held onto?
 - Under what circumstances are page maps destroyed?  Only when a window
 or
 tab is closed?
 - Does Wicket ever destroy a session or does it let the container manage
 all
 that?

 I guess what all of those questions really get is this - is there ever a
 point where Wicket starts running out of space and has to clean house? 
 If
 so, what is the process that it goes through?

 -Brandon


 igor.vaynberg wrote:

 yep. it looks like the servlet container is losing the session. do you
 have sticky sessions? if not then you need to have http session
 replication happening.

 -igor

 On Thu, Jan 22, 2009 at 1:11 PM, Matej Knopp matej.kn...@gmail.com
 wrote:
 Well, as far as I can tell, there is nothing special going on in
 Wicket that might cause session expiration. Last visited page is
 basically a normal session property.

 To me this seems more likely to be servlet container / load balancer
 issue.

 -Matej

 On Thu, Jan 22, 2009 at 9:21 PM, UPBrandon bcr...@up.com wrote:

 The project I work on uses Wicket 1.3.4 and we are using the default
 session
 store (SecondLevelCacheSessionStore.)

 The app is clustered and runs on WebLogic 8 through Apache.  I'm not
 entirely sure how those two are setup but I don't believe there is any
 resource sharing between instances in a cluster.  Instead, when a
 session is
 started, a WebLogic instance is chosen and all future requests in that
 session are sent to that one instance.  Using that setup, there
 shouldn't be
 any issues with a user's request going to a machine that doesn't have
 their
 page map.

 The problem is happening during normal forward use.  The example
 that
 I
 was given was a user taking a few minutes to fill out some information
 and
 by the time they submit the form, their session appears to have timed
 out
 and they get a page expired error.  I hope that helps to clarify
 things
 a
 bit.


 Matej Knopp-2 wrote:

 couple of questions:

 -what wicket version are you using?
 -are you using httpsessionstore or secondlevelcachesessionstore
 (default)?
 -what application server/container are you using?
 -are you running the application in clustered environment? if yes,
 what kind of load balancing do you have?
 -do the expirations happen during normal operation or only when using
 back button (or using application in multiple tabs)

 -Matej

 On Thu, Jan 22, 2009 at 7:47 PM, UPBrandon bcr...@up.com wrote:

 In some of our Wicket applications, as the number of users has
 started
 to
 ramp up, we seem to be experiencing a scalability issue.  Some users
 have
 had problems with pages expiring quickly.  This is second-hand
 information
 so I can't elaborate much but supposedly, during peak times, pages
 are
 expiring after just a few minutes of inactivity.  It would be nice
 to
 be
 able to set a minimum retention time but I don't seem to see an
 option
 like
 that.  I've found information about how Wicket stores pages and
 revisions
 (http://cwiki.apache.org/WICKET/page-maps.html) but I haven't been
 able
 to
 find much on how Wicket manages that data when things start filling
 up.

 Are there any good explanations out there on the web?

 -Brandon


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Page Maps and Expirations

2009-01-22 Thread UPBrandon

In some of our Wicket applications, as the number of users has started to
ramp up, we seem to be experiencing a scalability issue.  Some users have
had problems with pages expiring quickly.  This is second-hand information
so I can't elaborate much but supposedly, during peak times, pages are
expiring after just a few minutes of inactivity.  It would be nice to be
able to set a minimum retention time but I don't seem to see an option like
that.  I've found information about how Wicket stores pages and revisions
(http://cwiki.apache.org/WICKET/page-maps.html) but I haven't been able to
find much on how Wicket manages that data when things start filling up. 
Are there any good explanations out there on the web?

-Brandon
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Re: Page Maps and Expirations

2009-01-22 Thread UPBrandon

The project I work on uses Wicket 1.3.4 and we are using the default session
store (SecondLevelCacheSessionStore.)

The app is clustered and runs on WebLogic 8 through Apache.  I'm not
entirely sure how those two are setup but I don't believe there is any
resource sharing between instances in a cluster.  Instead, when a session is
started, a WebLogic instance is chosen and all future requests in that
session are sent to that one instance.  Using that setup, there shouldn't be
any issues with a user's request going to a machine that doesn't have their
page map.

The problem is happening during normal forward use.  The example that I
was given was a user taking a few minutes to fill out some information and
by the time they submit the form, their session appears to have timed out
and they get a page expired error.  I hope that helps to clarify things a
bit.


Matej Knopp-2 wrote:
 
 couple of questions:
 
 -what wicket version are you using?
 -are you using httpsessionstore or secondlevelcachesessionstore (default)?
 -what application server/container are you using?
 -are you running the application in clustered environment? if yes,
 what kind of load balancing do you have?
 -do the expirations happen during normal operation or only when using
 back button (or using application in multiple tabs)
 
 -Matej
 
 On Thu, Jan 22, 2009 at 7:47 PM, UPBrandon bcr...@up.com wrote:

 In some of our Wicket applications, as the number of users has started to
 ramp up, we seem to be experiencing a scalability issue.  Some users have
 had problems with pages expiring quickly.  This is second-hand
 information
 so I can't elaborate much but supposedly, during peak times, pages are
 expiring after just a few minutes of inactivity.  It would be nice to be
 able to set a minimum retention time but I don't seem to see an option
 like
 that.  I've found information about how Wicket stores pages and revisions
 (http://cwiki.apache.org/WICKET/page-maps.html) but I haven't been able
 to
 find much on how Wicket manages that data when things start filling up.
 Are there any good explanations out there on the web?

 -Brandon
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Re: Page Maps and Expirations

2009-01-22 Thread UPBrandon

Thanks Matej and Igor.  We are using sticky sessions (I can even see the
JSESSIONID in requests) and since a session sticks to a certain
server/instance, there shouldn't be any need for replicating sessions among
instances.  There are dozens and dozens of web apps here and losing sessions
hasn't been an issue.  Would it make any difference if I said that sometime
a user may get a page expired error only 30 seconds after the last page
request?  But this is a problem that only happens occasionally and
supposedly under high load.

Either way, I would still be interested in knowing more about how Wicket's
session store works.
- Under what circumstances are pages evicted from a page map?
- Is there a limit on how many pages can be stored in a single page map?
- Are there any global (per Wicket instance, not per map or session)
limits on how many pages are held onto?
- Under what circumstances are page maps destroyed?  Only when a window or
tab is closed?
- Does Wicket ever destroy a session or does it let the container manage all
that?

I guess what all of those questions really get is this - is there ever a
point where Wicket starts running out of space and has to clean house?  If
so, what is the process that it goes through?

-Brandon


igor.vaynberg wrote:
 
 yep. it looks like the servlet container is losing the session. do you
 have sticky sessions? if not then you need to have http session
 replication happening.
 
 -igor
 
 On Thu, Jan 22, 2009 at 1:11 PM, Matej Knopp matej.kn...@gmail.com
 wrote:
 Well, as far as I can tell, there is nothing special going on in
 Wicket that might cause session expiration. Last visited page is
 basically a normal session property.

 To me this seems more likely to be servlet container / load balancer
 issue.

 -Matej

 On Thu, Jan 22, 2009 at 9:21 PM, UPBrandon bcr...@up.com wrote:

 The project I work on uses Wicket 1.3.4 and we are using the default
 session
 store (SecondLevelCacheSessionStore.)

 The app is clustered and runs on WebLogic 8 through Apache.  I'm not
 entirely sure how those two are setup but I don't believe there is any
 resource sharing between instances in a cluster.  Instead, when a
 session is
 started, a WebLogic instance is chosen and all future requests in that
 session are sent to that one instance.  Using that setup, there
 shouldn't be
 any issues with a user's request going to a machine that doesn't have
 their
 page map.

 The problem is happening during normal forward use.  The example that
 I
 was given was a user taking a few minutes to fill out some information
 and
 by the time they submit the form, their session appears to have timed
 out
 and they get a page expired error.  I hope that helps to clarify things
 a
 bit.


 Matej Knopp-2 wrote:

 couple of questions:

 -what wicket version are you using?
 -are you using httpsessionstore or secondlevelcachesessionstore
 (default)?
 -what application server/container are you using?
 -are you running the application in clustered environment? if yes,
 what kind of load balancing do you have?
 -do the expirations happen during normal operation or only when using
 back button (or using application in multiple tabs)

 -Matej

 On Thu, Jan 22, 2009 at 7:47 PM, UPBrandon bcr...@up.com wrote:

 In some of our Wicket applications, as the number of users has started
 to
 ramp up, we seem to be experiencing a scalability issue.  Some users
 have
 had problems with pages expiring quickly.  This is second-hand
 information
 so I can't elaborate much but supposedly, during peak times, pages are
 expiring after just a few minutes of inactivity.  It would be nice to
 be
 able to set a minimum retention time but I don't seem to see an option
 like
 that.  I've found information about how Wicket stores pages and
 revisions
 (http://cwiki.apache.org/WICKET/page-maps.html) but I haven't been
 able
 to
 find much on how Wicket manages that data when things start filling
 up.
 
 Are there any good explanations out there on the web?

 -Brandon
 

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Re: I also have the question

2009-01-19 Thread UPBrandon

From what I've read, the difference between the two browsers is that IE uses
the file name's extension to determine what type of file it is and other
browsers like FireFox use the MIME type provided by the remote server (your
application in this case.)

So, IE is seeing .csv and assuming it's a CSV file.  FireFox on the other
hand is looking at the text/plain MIME type you provided and assuming it's
a plain text file.  You are using the wrong mime type.


wch2001 wrote:
 
 thanks, UPBrandon
 
 I tried your code, for csv, 
 
 public class CsvRequestTarget extends ByteDataRequestTarget {
 
 public CsvRequestTarget(byte[] data, String fileName) {
 super(text/plain, data, fileName+.csv);
 }
 
 } 
 but it can not work with IE and ff.
 
 Could you tell me your code about csv ?
 
 thanks a lot
 
 UPBrandon wrote:
 
 For a while, we were using a solution that allowed us to download
 generated PDF's but it only seemed to work in IE and some people had
 trouble using it from outside connections.
 
 What I wanted was a way to access dynamic/generated content that:
 - Doesn't cause Wicket to be come non-responsive after the request
 - Works in at least IE and FF
 - Allows a file name to be provided
 - Allows a mime type to be provided
 
 After taking another stab at it, I was able to get that working.  Here is
 what I ended up with:
 
 public class ByteDataRequestTarget extends ByteArrayResource implements
 IRequestTarget {
  private String fileName;
 
  public ByteDataRequestTarget(String mimeType, byte[] data, String
 fileName) {
  super(mimeType, data, fileName);
  this.fileName = fileName;
  }
 
  public void detach(RequestCycle requestCycle) { }
 
  public void respond(RequestCycle requestCycle) {
  requestCycle.setRequestTarget(new
 ResourceStreamRequestTarget(this.getResourceStream() ) {
  public String getFileName() {
  return fileName;
  }
  } );
  }
 }
 
 And then I subclassed for different common file types like PDF and CSV. 
 Those subclasses basically just provide the MIME type for the user and
 automatically add the file extension.
 
 public class PdfRequestTarget extends ByteDataRequestTarget {
  public PdfRequestTarget(byte[] data, String fileName) {
  super(Constants.PDF_MIME_TYPE, data, fileName+.pdf);
  }
 }
 
 To use the class, you do something like this:
 
 new Button(buttonId, new Model(My Button) ) {
  public void onSubmit() {
  getRequestCycle().setRequestTarget(new
 PdfRequestTarget(getSomePdfData(), FileName) );
  }
 };
 
 I hope that helps.
 
 

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Re: I also have the question

2009-01-14 Thread UPBrandon

For a while, we were using a solution that allowed us to download generated
PDF's but it only seemed to work in IE and some people had trouble using it
from outside connections.

What I wanted was a way to access dynamic/generated content that:
- Doesn't cause Wicket to be come non-responsive after the request
- Works in at least IE and FF
- Allows a file name to be provided
- Allows a mime type to be provided

After taking another stab at it, I was able to get that working.  Here is
what I ended up with:

public class ByteDataRequestTarget extends ByteArrayResource implements
IRequestTarget {
private String fileName;

public ByteDataRequestTarget(String mimeType, byte[] data, String 
fileName)
{
super(mimeType, data, fileName);
this.fileName = fileName;
}

public void detach(RequestCycle requestCycle) { }

public void respond(RequestCycle requestCycle) {
requestCycle.setRequestTarget(new
ResourceStreamRequestTarget(this.getResourceStream() ) {
public String getFileName() {
return fileName;
}
} );
}
}

And then I subclassed for different common file types like PDF and CSV. 
Those subclasses basically just provide the MIME type for the user and
automatically add the file extension.

public class PdfRequestTarget extends ByteDataRequestTarget {
public PdfRequestTarget(byte[] data, String fileName) {
super(Constants.PDF_MIME_TYPE, data, fileName+.pdf);
}
}

To use the class, you do something like this:

new Button(buttonId, new Model(My Button) ) {
public void onSubmit() {
getRequestCycle().setRequestTarget(new 
PdfRequestTarget(getSomePdfData(),
FileName) );
}
};

I hope that helps.


wch2001 wrote:
 
 UPBrandon,
 Did u find any solution for it?
 
 anyone can help?
 
 thanks
 
 
 UPBrandon wrote:
 
 It's not that I necessary want to see the page refreshed with updated
 form values.  In fact, I would prefer that the user not leave the page at
 all.  All the form contains is a checkgroup of things to include in the
 PDF.  All I want to do when the button is pressed is view/download the
 PDF but the form with the checkgroup needs to be submitted first so I can
 see what was checked when I generate the PDF.
 
 I suppose taking the ResourceReference's and using it in the onload would
 work but it seems like such a hack, not to mention that it might cause
 problems if the user uses the back button.  While working on my
 DynamicWebResource, I was able to download a PDF and continue using my
 application using a link (assigned to either a link or button in HTML.) 
 The only problem is that it doesn't do a submit.  Accessing the
 DynamicWebResource from a button works but makes my app non-responsive. 
 What I would like to do is either make the ResourceLink somehow submit my
 form or, even better, make a button component that handles the request in
 a way that doens't break Wicket.  Ideas/suggestions?
 
 -Brandon
 
 
 igor.vaynberg wrote:
 
 so you want to see the page with updated form values _and_ stream the
 pdf?
 
 why dont you take that url you generated for your resourceref and
 append it to a window.onload javascript that does window.location=url;
 
 -gior
 

  As I mentioned in my previous response, I couldn't use
  getRequestCycle().setRequestTarget() directly because of the way the
 API
  works (you can use a ResourceReference but not a Resource.)  Instead,
 I
  ended up with something like this:

  new AjaxButton(buttonId, form) {
 protected void onSubmit(AjaxRequestTarget target, Form form) {
 ResourceReference pdfReference = new
 ResourceReference() {
 protected Resource newResource() {
 return new BillPdfWebResource(...);
 }
 };
 String url =
 getRequestCycle().get().urlFor(pdfReference).toString();
 getRequestCycle().setRequestTarget(new
 RedirectRequestTarget(url) );
 }
  }

  It works... but only once.  When I click on the button, everything
 works, my
  PDF gets generated and downloaded but then my app becomes
 unresponsive.  I
  can't interact with the site at all until I start over.  Is there a
 better
  way to go about this that wouldn't cause that side effect?  Whatever
  approach I take, I need to be able to submit a form when the PDF is
  generated.  My example doesn't show it but my BillPdfWebResource class
  generates a PDF based on the user's selection and my Form's Model
 needs to
  be updated.  Any suggestions?

  -Brandon

  igor.vaynberg wrote:
  
   onsubmit() {
 getrequestcycle().setrequesttarget(new
   redirectrequesttarget(urlfor(resourceref)));
   }
  
   -igor
  
   On Feb 13, 2008 8:18 AM, UPBrandon bcr...@up.com wrote:
  
   In a project I am working on, I wrote

Re: Howto use .xhtml instead of .html for template file extension

2008-02-25 Thread UPBrandon

Out of curiosity, since pages in a Wicket application aren't accessed as
directly as something like a JSP might be, what reasoning is there for using
an XHTML file extension instead of HTML?

-Brandon


MYoung wrote:
 
 I follow this: 
 
 http://cwiki.apache.org/confluence/display/WICKET/Use+a+different+extension+for+template+files
 
 added this to MyPage:
 
 @Override
 public String getMarkupType() {
   return xhtml;
 }
 
 and it doesn't work.  Firefox wants to download the file instead of
 showing the page.
  http://www.nabble.com/file/p15641885/no-go-xhtml.jpg 
 
 IE7 cannot even download the file.
 
 What am I doing wrong?
 

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Re: Opening DynamicWebResource from Button/AjaxButton?

2008-02-21 Thread UPBrandon

It's not that I necessary want to see the page refreshed with updated form
values.  In fact, I would prefer that the user not leave the page at all. 
All the form contains is a checkgroup of things to include in the PDF. 
All I want to do when the button is pressed is view/download the PDF but the
form with the checkgroup needs to be submitted first so I can see what was
checked when I generate the PDF.

I suppose taking the ResourceReference's and using it in the onload would
work but it seems like such a hack, not to mention that it might cause
problems if the user uses the back button.  While working on my
DynamicWebResource, I was able to download a PDF and continue using my
application using a link (assigned to either a link or button in HTML.)  The
only problem is that it doesn't do a submit.  Accessing the
DynamicWebResource from a button works but makes my app non-responsive. 
What I would like to do is either make the ResourceLink somehow submit my
form or, even better, make a button component that handles the request in a
way that doens't break Wicket.  Ideas/suggestions?

-Brandon


igor.vaynberg wrote:
 
 so you want to see the page with updated form values _and_ stream the pdf?
 
 
 why dont you take that url you generated for your resourceref and
 append it to a window.onload javascript that does window.location=url;
 
 -gior
 
 
 On Wed, Feb 20, 2008 at 2:33 PM, UPBrandon [EMAIL PROTECTED] wrote:

  As I mentioned in my previous response, I couldn't use
  getRequestCycle().setRequestTarget() directly because of the way the API
  works (you can use a ResourceReference but not a Resource.)  Instead, I
  ended up with something like this:

  new AjaxButton(buttonId, form) {
 protected void onSubmit(AjaxRequestTarget target, Form form) {
 ResourceReference pdfReference = new
 ResourceReference() {
 protected Resource newResource() {
 return new BillPdfWebResource(...);
 }
 };
 String url =
 getRequestCycle().get().urlFor(pdfReference).toString();
 getRequestCycle().setRequestTarget(new
 RedirectRequestTarget(url) );
 }
  }

  It works... but only once.  When I click on the button, everything
 works, my
  PDF gets generated and downloaded but then my app becomes unresponsive. 
 I
  can't interact with the site at all until I start over.  Is there a
 better
  way to go about this that wouldn't cause that side effect?  Whatever
  approach I take, I need to be able to submit a form when the PDF is
  generated.  My example doesn't show it but my BillPdfWebResource class
  generates a PDF based on the user's selection and my Form's Model needs
 to
  be updated.  Any suggestions?

  -Brandon




  igor.vaynberg wrote:
  
   onsubmit() {
 getrequestcycle().setrequesttarget(new
   redirectrequesttarget(urlfor(resourceref)));
   }
  
   -igor
  
  
   On Feb 13, 2008 8:18 AM, UPBrandon [EMAIL PROTECTED] wrote:
  
   In a project I am working on, I wrote a DynamicWebResource that
 generates
   a
   PDF file and, by setting the Content-Disposition in the header, got
 it so
   that the user is prompted to download the PDF when they click on a
   ResourceLink to my PDF-generating resource.
  
   That all works fine but now I need to open the PDF from a button.  I
 want
   to
   allow the user to select a value in a form and press a button to view
   somewhat of a report for the item they selected.  However, there
 doesn't
   appear to be any type of button that would lead a user to my
   DynamicWebResource.  Is there any way to have a button do a submit
   (update
   the model) and then lead the user to a resource?
  
   -Brandon
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Re: Opening DynamicWebResource from Button/AjaxButton?

2008-02-20 Thread UPBrandon

As I mentioned in my previous response, I couldn't use
getRequestCycle().setRequestTarget() directly because of the way the API
works (you can use a ResourceReference but not a Resource.)  Instead, I
ended up with something like this:

new AjaxButton(buttonId, form) {
protected void onSubmit(AjaxRequestTarget target, Form form) {
ResourceReference pdfReference = new ResourceReference() {
protected Resource newResource() {
return new BillPdfWebResource(...);
}
};
String url = 
getRequestCycle().get().urlFor(pdfReference).toString();
getRequestCycle().setRequestTarget(new 
RedirectRequestTarget(url) );
}
}

It works... but only once.  When I click on the button, everything works, my
PDF gets generated and downloaded but then my app becomes unresponsive.  I
can't interact with the site at all until I start over.  Is there a better
way to go about this that wouldn't cause that side effect?  Whatever
approach I take, I need to be able to submit a form when the PDF is
generated.  My example doesn't show it but my BillPdfWebResource class
generates a PDF based on the user's selection and my Form's Model needs to
be updated.  Any suggestions?

-Brandon


igor.vaynberg wrote:
 
 onsubmit() {
   getrequestcycle().setrequesttarget(new
 redirectrequesttarget(urlfor(resourceref)));
 }
 
 -igor
 
 
 On Feb 13, 2008 8:18 AM, UPBrandon [EMAIL PROTECTED] wrote:

 In a project I am working on, I wrote a DynamicWebResource that generates
 a
 PDF file and, by setting the Content-Disposition in the header, got it so
 that the user is prompted to download the PDF when they click on a
 ResourceLink to my PDF-generating resource.

 That all works fine but now I need to open the PDF from a button.  I want
 to
 allow the user to select a value in a form and press a button to view
 somewhat of a report for the item they selected.  However, there doesn't
 appear to be any type of button that would lead a user to my
 DynamicWebResource.  Is there any way to have a button do a submit
 (update
 the model) and then lead the user to a resource?

 -Brandon
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Disabling Modal Unload Confirmation

2008-02-14 Thread UPBrandon

I have a page that uses ModalWindows and I would like to disable the
JavaScript confirmation that is displayed when you try to leave the page
while a modal window is open.  As recommended by developers here, I added
Wicket.Window.unloadConfirmation = false; in my page header to disable
those confirmations.  However, when the page loads, the browser gives me an
error say that Wicket.Window doesn't have any properties.  As you might
expect, the confirmation dialog is not not disabled.

Looking at the source for my page, it looks like my code, which was declared
inside of a wicket:head tag, is called before Wicket's modal.js.  I assume
that including modal.js before Wicket.Window.unloadConfirmation = false
would fix the problem but I'm not sure how to do that. Does anyone know of a
way to fix this?

-Brandon
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Opening DynamicWebResource from Button/AjaxButton?

2008-02-13 Thread UPBrandon

In a project I am working on, I wrote a DynamicWebResource that generates a
PDF file and, by setting the Content-Disposition in the header, got it so
that the user is prompted to download the PDF when they click on a
ResourceLink to my PDF-generating resource.

That all works fine but now I need to open the PDF from a button.  I want to
allow the user to select a value in a form and press a button to view
somewhat of a report for the item they selected.  However, there doesn't
appear to be any type of button that would lead a user to my
DynamicWebResource.  Is there any way to have a button do a submit (update
the model) and then lead the user to a resource?

-Brandon
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Re: Wicket Ideal Bandwidth

2008-02-13 Thread UPBrandon

Regardless of what technologies you use on the server side (Wicket, JSF,
Struts, etc.,) the end product that gets transmitted to the user is just
plain old HTML.  Use the same judgment you would use with any other
page/site.  If you have big pages with lots of images and whatnot, you will
either need a faster connection or you would need to be a little more
patient.  :-)

I suppose AJAX might be another consideration.  If you are using AJAX a lot,
you application's responsiveness might depend on your connection.  But even
then, with relatively small responses, responsiveness generally has more to
do with latency than bandwidth.

-Brandon


carloc wrote:
 
 Hi guys,
 
 What do you think will be the ideal bandwidth to use when you are using
 Wicket?
 Will it work good on a 128kbps connection?
 
 what's the beset bandwidth that you could recommend?
 
 carlo
 

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RE: Dynamic DataTable columns

2008-01-29 Thread UPBrandon

Well, it's not really a matter of hiding and showing table columns for
convenience.  It's really more a matter of having a selection panel that
allows a user to select a business object (the panel puts it in a model) and
and display panel that displays details for the selected business object. 
The business objects - we'll say a bill in this case - could have many
different variations.  Each type might have a lot of common information
(date/time, total amount, customer name, address, etc.) but each type of
bill might have fields that others don't.  Normally, taking an OO approach,
I would create a base display panel and have bill-specific panels that
extend that base panel, adding extra columns to the details table when the
DataTable is created.  However, in this case, I have a selection panel and
a display panel that share a model and once they are created, that's it. 
Staying with the bill example, the selection panel displays bills (an
assortment of types) and the display panel has to show whatever is selected.

Since I originally posted this message, I got around this limitation by
creating a model that replaces a generic display panel with a more
specialized panel as needed.  But I still believe there is a need for a
DataTable that is more dynamic.  Ideally, a DataTable would take a
java.util.List or a model wrapping a List and rather than referencing that
list directly, the DataTable would use the its own getColumns() method,
making it easy to add logic as needed.


cblehman wrote:
 
 Can't you just create a new DataTable with the new list of columns in
 the ajax call when you want to add/remove a column, then repaint the
 container holding the Table?  
 
 -Clay
 
 -Original Message-
 From: Timo Rantalaiho [mailto:[EMAIL PROTECTED] 
 Sent: Monday, January 28, 2008 10:26 PM
 To: users@wicket.apache.org
 Subject: Re: Dynamic DataTable columns
 
 On Mon, 28 Jan 2008, UPBrandon wrote:
 Although, in the mean time, I still have the same problem - not being
 able
 to change change the columns after the DataTable has been declared, at
 render time.  Any suggestions?
 
 Roll your own using DataView. You can take ideas from 
 DataTable but I doubt that the Column abstraction helps you
 if you want to change the columns dynamically; this is 
 probably easier done by just changing the row Item creation.
 
 In my experience such high-level components as DataTable
 don't work well when you want a lot of control, then their
 value is more that of an example.
 
 Best wishes,
 Timo

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Dynamic DataTable columns

2008-01-28 Thread UPBrandon

I was wondering if there is any way to change the columns of a DataTable once
it has been declared.  On my page, I pass an IModel into a Panel that
contains my DataTable.  As the user users the page, the contents of the
model will change and I would like for that to affect which columns are
shown in the table.  The problem is that DataTables take an array of
IColumns (instead of a List, which could be manipulated after
instantiation.)  I would override the DataTable's getColumns() method to
return the appropriate columns but it is final.  Is there any
technical/design reason why getColumns() is final?  To me, it seems
unnecessary and is very annoying in an OO framework.

Does anyone know of any way I could make the columns in my table dynamic
without setting the visibility of th's and td's from inside my IColumns? 
Any help would be appreciated.

-Brandon
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Re: Dynamic DataTable columns

2008-01-28 Thread UPBrandon

Hmm... looking at the code a bit, I don't think making getColumns() non-final
it will help after all.  I assumed that getColumns() was used internally by
DataTable but it doesn't appear to be.  What would really be nice is if
DataTable took a List (or a model wrapping a list) instead of an IColumn
array but I agree that would be a much bigger change.

Although, in the mean time, I still have the same problem - not being able
to change change the columns after the DataTable has been declared, at
render time.  Any suggestions?

-Brandon


igor.vaynberg wrote:
 
 are you sure that will help you? does datatable refresh the component
 hierarchy that defines the toolbars on every requests?
 
 -igor
 
 
 On Jan 28, 2008 11:32 AM, UPBrandon [EMAIL PROTECTED] wrote:

 Is there any chance simply removing the final modifier could make it
 into a
 1.3.1 type of release?


 igor.vaynberg wrote:
 
  you will have to roll your own for now. we might fix this in 1.4 if
  you add this to the wiki wishlist for 1.4 page.
 
  -igor
 
  I was wondering if there is any way to change the columns of a
 DataTable
  once
  it has been declared.  On my page, I pass an IModel into a Panel that
  contains my DataTable.  As the user users the page, the contents of
 the
  model will change and I would like for that to affect which columns
 are
  shown in the table.  The problem is that DataTables take an array of
  IColumns (instead of a List, which could be manipulated after
  instantiation.)  I would override the DataTable's getColumns() method
 to
  return the appropriate columns but it is final.  Is there any
  technical/design reason why getColumns() is final?  To me, it seems
  unnecessary and is very annoying in an OO framework.
 
  Does anyone know of any way I could make the columns in my table
 dynamic
  without setting the visibility of th's and td's from inside my
  IColumns?
  Any help would be appreciated.
 
  -Brandon
 

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Re: Dynamic DataTable columns

2008-01-28 Thread UPBrandon

Is there any chance simply removing the final modifier could make it into a
1.3.1 type of release?


igor.vaynberg wrote:
 
 you will have to roll your own for now. we might fix this in 1.4 if
 you add this to the wiki wishlist for 1.4 page.
 
 -igor
 
 I was wondering if there is any way to change the columns of a DataTable
 once
 it has been declared.  On my page, I pass an IModel into a Panel that
 contains my DataTable.  As the user users the page, the contents of the
 model will change and I would like for that to affect which columns are
 shown in the table.  The problem is that DataTables take an array of
 IColumns (instead of a List, which could be manipulated after
 instantiation.)  I would override the DataTable's getColumns() method to
 return the appropriate columns but it is final.  Is there any
 technical/design reason why getColumns() is final?  To me, it seems
 unnecessary and is very annoying in an OO framework.

 Does anyone know of any way I could make the columns in my table dynamic
 without setting the visibility of th's and td's from inside my
 IColumns?
 Any help would be appreciated.

 -Brandon
 

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FilterToolbar API Changes

2007-10-23 Thread UPBrandon

Could somebody please explain the Wicket-Extensions 1.3 beta 4 API changes
for the FilterToolbar?  I have looked everywhere for information and a
working example but can't seem to find any.  I found a mailing list
conversation about the reasoning for the change but nothing that helps me
get things up and running again.

From what I gather, instead of the FilterToolbar creating a form, the user
needs to wrap their DataTable in a form (a FilterForm actually) and pass
that form into the FilterToolbar when it's constructed.  The table I am
working on displays records from a database and allows users to select rows
to perform an action on.  Because of that, my DataTable is wrapped in a
CheckGroup, which is wrapped in a form.  Since there was already a Form
around the table, I tried switching it to a FilterForm and passing it into
the FilterToolbar but I get an exception saying that the focus-tracker
component was added in code but not the markup.  Should I be able to use
that form for both the check group and the filter toolbar or do I need to
add another form somehow?  Any help would be appreciated.

-Brandon
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Re: FilterToolbar API Changes

2007-10-23 Thread UPBrandon

Do you have an address for that?  I downloaded what I thought was the latest
version from
http://wicketstuff.org/confluence/display/STUFFWIKI/wicket-phonebook
yesterday but it appears to be using an older version of Wicket-Extensions. 
The page I was focusing on, ListContactsPage, uses the older (now missing)
constructor that takes a DataTable and SortableDataProvider as parameters. 
Is a newer version available somewhere else online?

-Brandon


igor.vaynberg wrote:
 
 see wicket-phonebook in wicket-stuff
 
 -igor
 
 
 On 10/23/07, UPBrandon [EMAIL PROTECTED] wrote:

 Could somebody please explain the Wicket-Extensions 1.3 beta 4 API
 changes
 for the FilterToolbar?  I have looked everywhere for information and a
 working example but can't seem to find any.  I found a mailing list
 conversation about the reasoning for the change but nothing that helps me
 get things up and running again.

 From what I gather, instead of the FilterToolbar creating a form, the
 user
 needs to wrap their DataTable in a form (a FilterForm actually) and pass
 that form into the FilterToolbar when it's constructed.  The table I am
 working on displays records from a database and allows users to select
 rows
 to perform an action on.  Because of that, my DataTable is wrapped in a
 CheckGroup, which is wrapped in a form.  Since there was already a Form
 around the table, I tried switching it to a FilterForm and passing it
 into
 the FilterToolbar but I get an exception saying that the focus-tracker
 component was added in code but not the markup.  Should I be able to use
 that form for both the check group and the filter toolbar or do I need to
 add another form somehow?  Any help would be appreciated.

 -Brandon
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Re: FilterToolbar API Changes

2007-10-23 Thread UPBrandon

That worked perfectly.  Thanks for the point in the right direction.  For
anyone looking for information on a similar problem, a change in
Wicket-Extensions 1.3 beta 4 requires users to pass a FilterForm to a
FilterToolbar when it is constructed.  If your table already uses components
like a CheckGroup, your DataTable should already be wrapped in a Form of
some sort.  Simply changing that Form to a FilterForm will allow you to use
that form for both a CheckGroup and the FilterToolbar.  But be aware that
you will now have to manually add a focus-tracker and focus-restore
component to your markup.  The corresponding objects are added on the Java
side by the FilterToolbar.  An example, can be found at
https://wicket-stuff.svn.sourceforge.net/svnroot/wicket-stuff/trunk/wicket-phonebook/src/java/wicket/contrib/phonebook/web/page/ListContactsPage.html


Martijn Dashorst wrote:
 
 Check it out from subversion, then you are sure you have the latest
 (though it may still be a bit out of date).
 
 https://wicket-stuff.svn.sourceforge.net/svnroot/wicket-stuff/trunk/wicket-phonebook/
 
 Martijn
 
 On 10/23/07, UPBrandon [EMAIL PROTECTED] wrote:

 Do you have an address for that?  I downloaded what I thought was the
 latest
 version from
 http://wicketstuff.org/confluence/display/STUFFWIKI/wicket-phonebook
 yesterday but it appears to be using an older version of
 Wicket-Extensions.
 The page I was focusing on, ListContactsPage, uses the older (now
 missing)
 constructor that takes a DataTable and SortableDataProvider as
 parameters.
 Is a newer version available somewhere else online?

 -Brandon


 igor.vaynberg wrote:
 
  see wicket-phonebook in wicket-stuff
 
  -igor
 
 
  On 10/23/07, UPBrandon [EMAIL PROTECTED] wrote:
 
  Could somebody please explain the Wicket-Extensions 1.3 beta 4 API
  changes
  for the FilterToolbar?  I have looked everywhere for information and a
  working example but can't seem to find any.  I found a mailing list
  conversation about the reasoning for the change but nothing that helps
 me
  get things up and running again.
 
  From what I gather, instead of the FilterToolbar creating a form, the
  user
  needs to wrap their DataTable in a form (a FilterForm actually) and
 pass
  that form into the FilterToolbar when it's constructed.  The table I
 am
  working on displays records from a database and allows users to select
  rows
  to perform an action on.  Because of that, my DataTable is wrapped in
 a
  CheckGroup, which is wrapped in a form.  Since there was already a
 Form
  around the table, I tried switching it to a FilterForm and passing it
  into
  the FilterToolbar but I get an exception saying that the focus-tracker
  component was added in code but not the markup.  Should I be able to
 use
  that form for both the check group and the filter toolbar or do I need
 to
  add another form somehow?  Any help would be appreciated.
 
  -Brandon
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 -- 
 Buy Wicket in Action: http://manning.com/dashorst
 Apache Wicket 1.3.0-beta4 is released
 Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0-beta4/
 
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Re: DataTable FilterToolbar Shifted After AJAX Call

2007-10-11 Thread UPBrandon

Oh, well that's good to hear.  My team and I are using the last major
release, beta 3.  I will see if a more recent build fixes the problem and
add a Jira ticket if it doesn't.  Are nightly stable builds available
anywhere?

-Brandon


Evan Chooly wrote:
 
 What version of wicket are you using?  I saw this with beta3 but later
 snapshots fixed it for me.  So if you're not on a recent snapshot, you
 might
 consider trying that and seeing if that helps.
 
 On 10/10/07, UPBrandon [EMAIL PROTECTED] wrote:


 I am working on a project that has a DataTable with a filter that uses
 AJAX
 to update an object on the backend and refresh the table, among other
 things.  Everything is working well so far except the columns in the
 filter
 toolbar row are shifted one column to the right after the AJAX refresh.
 Using Firebug to inspect the toolbar row after the update, I see that
 everything is shifted one to the right because Wicket is inserting a
 div
 in the tr before the td's.  So instead of

 tr
 td.../td
 td.../td
 /tr

 I have

 tr
 div/div
 td.../td
 td.../td
 /tr

 The contents of the div are:

 div id=filter-form18 wicket:id=filter-forminput type=hidden
 value= wicket:id=focus-tracker

 name=checkGroup:equipmentDataTable:topToolbars:2:toolbar:filter-form:focus-tracker

 id=queueDetailsPanel:checkForm:checkGroup:equipmentDataTable:topToolbars:2:toolbar:filter-form:focus-tracker//div

 If it makes any difference, when I do the update, I am not updating the
 DataTable directly - I am updating a higher level Panel that contains the
 DataTable.  Has anyone else had any similar problems?

 -Brandon
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DataTable FilterToolbar Shifted After AJAX Call

2007-10-10 Thread UPBrandon

I am working on a project that has a DataTable with a filter that uses AJAX
to update an object on the backend and refresh the table, among other
things.  Everything is working well so far except the columns in the filter
toolbar row are shifted one column to the right after the AJAX refresh. 
Using Firebug to inspect the toolbar row after the update, I see that
everything is shifted one to the right because Wicket is inserting a div
in the tr before the td's.  So instead of

tr
td.../td
td.../td
/tr

I have

tr
div/div
td.../td
td.../td
/tr

The contents of the div are:

div id=filter-form18 wicket:id=filter-forminput type=hidden
value= wicket:id=focus-tracker
name=checkGroup:equipmentDataTable:topToolbars:2:toolbar:filter-form:focus-tracker
id=queueDetailsPanel:checkForm:checkGroup:equipmentDataTable:topToolbars:2:toolbar:filter-form:focus-tracker//div

If it makes any difference, when I do the update, I am not updating the
DataTable directly - I am updating a higher level Panel that contains the
DataTable.  Has anyone else had any similar problems?

-Brandon
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Re: Appending JS to an Ajax Component

2007-09-27 Thread UPBrandon

I can see how one JavaScript might be dependent on another (although it seems
like such scripts should really be one script anyway) but that case is
definitely not universal.  In my experience, sometimes a Wicket user needs
to add an onclick or onchange event to an Ajax component and execution order
doesn't matter.  I think it would be better to have AttributeAppender work
consistently (but not address a special case) than to not work at all. 
There may be other technical reasons why applying an AttributeAppender to an
Ajax component without having its output overwritten would be a challenge,
but interdependency shouldn't be a reason.  Thoughts?

-Brandon


igor.vaynberg wrote:
 
 well, the problem is you are trying to bind two things to the same event.
 the order of execution is not always clear
 
 if i call add(A) followed by add(B)
 
 does it always execute A,B or can B,A be acceptable? if it is A,B does B
 still execute if A fails? do we need to somehow prevent A from doing a
 return false; and preventing B from executing? etc etc etc. there is
 just
 no easy way to do this automatically and get all the usecases right.
 
 -igor
 
 
 On 9/25/07, UPBrandon [EMAIL PROTECTED] wrote:


 I did that and it worked.  Thanks for a point in the right direction.

 But while I am writing, doesn't it seem like appenders should work more
 consistently, regardless of what component the appender is added to?  Is
 there a technical reason why that is not (and could not be) the case?

 -Brandon


 igor.vaynberg wrote:
 
  you can putting your script into iajaxcalldecorator and giving that to
 the
  behavior
 
  -igor
 
 
  On 9/24/07, UPBrandon [EMAIL PROTECTED] wrote:
 
 
  I am trying to use an AttributeAppender to append an onchange script
 to
 a
  DropDownChoice that also has an OnChangeAjaxBehavior added to it.  But
  only
  the OnChangeAjaxBehavior's script is showing up in the markup.  Is
 there
  a
  trick to adding JavaScript to a component that also has an Ajax
 behavior?
  Any help would be appreciated.
 
  -Brandon
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Re: Appending JS to an Ajax Component

2007-09-25 Thread UPBrandon

I did that and it worked.  Thanks for a point in the right direction.

But while I am writing, doesn't it seem like appenders should work more
consistently, regardless of what component the appender is added to?  Is
there a technical reason why that is not (and could not be) the case?

-Brandon


igor.vaynberg wrote:
 
 you can putting your script into iajaxcalldecorator and giving that to the
 behavior
 
 -igor
 
 
 On 9/24/07, UPBrandon [EMAIL PROTECTED] wrote:


 I am trying to use an AttributeAppender to append an onchange script to a
 DropDownChoice that also has an OnChangeAjaxBehavior added to it.  But
 only
 the OnChangeAjaxBehavior's script is showing up in the markup.  Is there
 a
 trick to adding JavaScript to a component that also has an Ajax behavior?
 Any help would be appreciated.

 -Brandon
 --
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 http://www.nabble.com/Appending-JS-to-an-Ajax-Component-tf4512114.html#a12869413
 Sent from the Wicket - User mailing list archive at Nabble.com.


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Appending JS to an Ajax Component

2007-09-24 Thread UPBrandon

I am trying to use an AttributeAppender to append an onchange script to a
DropDownChoice that also has an OnChangeAjaxBehavior added to it.  But only
the OnChangeAjaxBehavior's script is showing up in the markup.  Is there a
trick to adding JavaScript to a component that also has an Ajax behavior? 
Any help would be appreciated.

-Brandon
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Refresh a page from an AjaxButton?

2007-09-17 Thread UPBrandon

I'm writing a Wicket app that makes pretty heavy use of the Wicket-Extensions
ModalWindow to present what is basically a dialog box where the user can
enter information into a form.  The form on each dialog box is submitted
with an AjaxButton and each panel has a feedback panel that is refreshed to
show validation errors.  Everything works fine and right now I am just
closing a the dialog when the form is submitted successfully.  However, what
I would like to do is have the entire page reload to reflect whatever
changes the form submit may have caused.  I know that I could add certain
page elements to the AjaxButton's AjaxRequestTarget but the effect of the
dialog could be wide spread.  Is there any way to have an AjaxButton
trigger a complete non-Ajax page refresh?

-Brandon
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Re: Refresh a page from an AjaxButton?

2007-09-17 Thread UPBrandon

That seems to work.  I was trying to do exactly that earlier.  At the time, I
couldn't seem to access the setResponsePage() method but I must have been
doing something wrong.  For anyone who might be reading this later, I ended
up calling setResponsePage(getPage() );

The only problem I am having now is that ModalWindow has an annoying are
you sure you want to navigate away from this page JavaScript confirm since
the modal window is open when the browser tries to move on.  Maybe there's
something in the API to disable that warning...

Anyway, thanks for the help everyone.

-Brandon


John Ray wrote:
 
 
 UPBrandon wrote:
 
 Is there any way to have an AjaxButton trigger a complete non-Ajax page
 refresh?
 
 
 Call setResponsePage() passing the page you want to be loaded after the
 AJAX call is complete. To refresh the current page simply pass in the
 current page i.e. this.
 
 

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Re: Refresh a page from an AjaxButton?

2007-09-17 Thread UPBrandon

I thought about it but using ModalWindows makes things a little more
complicated.  Using a regular button, the browser will navigate away and the
modal window will be lost.  If there were no validation on the form inputs
and the window always closed after the submit, that might not be a problem
but it does create a problem if you want to do validation and have errors
show up in that modal window.  Does that make sense at all?

-Brandon


David Bernard-2 wrote:
 
 Why not use a regular Button and the onSumit() method of the form if you
 want to reload the page ?
 
 /david
 
 UPBrandon wrote:
 I'm writing a Wicket app that makes pretty heavy use of the
 Wicket-Extensions
 ModalWindow to present what is basically a dialog box where the user can
 enter information into a form.  The form on each dialog box is
 submitted
 with an AjaxButton and each panel has a feedback panel that is refreshed
 to
 show validation errors.  Everything works fine and right now I am just
 closing a the dialog when the form is submitted successfully.  However,
 what
 I would like to do is have the entire page reload to reflect whatever
 changes the form submit may have caused.  I know that I could add certain
 page elements to the AjaxButton's AjaxRequestTarget but the effect of the
 dialog could be wide spread.  Is there any way to have an AjaxButton
 trigger a complete non-Ajax page refresh?
 
 -Brandon
 
 -
 To unsubscribe, e-mail: [EMAIL PROTECTED]
 For additional commands, e-mail: [EMAIL PROTECTED]
 
 
 

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