AjaxFallbackLabel Component

[Abid K]

I've created a simple component called 'AjaxFallbackLabel', which might be
useful to have as part of the Ajax components.

I particularly found it useful when explaining to the user that Ajaxified
components would automatically refresh, otherwise when JavaScript is
disabled it would revert to the default message which could say 'Manually
refresh the page to update the component'. If you wanted to see it in
action then just checkout the wicket example and run it.

Anyway, if you'd like to include it into Wicket, you're more than welcome...
https://code.google.com/p/mutable-password/source/browse/trunk/mutable-password-wicket-example/src/main/java/abid/password/wicket/components/AjaxFallbackLabel.java

Thanks

URL

[Abid K.]

I have a page that's mounted and when accessing the page the url is:
http://www.something.com/admin/userAdd

When posting a form the url changes to:
http://www.something.com/admin/userAdd/wicket:interface/:3:dataForm::IFormSubmitListener::

Is it possible that the url can stay clean like the first url? There
was a mention of changing the url strategy to one pass, but I was
wondering if something else could be done.

Ps. Still learning Wicket

Thanks

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Monitor external link clicks

[Abid K]

Hi,

I am using the ExternalLink class for external sites. I've noticed
this class does not implement the ILinkListener interface and I am not
able to monitor these clicks.

I tried to implement the listener, but I did not get far. e.g.
public class MonitorExternalLink extends ExternalLink implements ILinkListener {
...
}

Does anyone know how I can implement a listener on the ExternalLink class?

Thanks

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Re: Monitor external link clicks

[Abid K]

Hi Martin,

Do you mean the javascript 'onclick' function? Cause I have tried to
implement the onLinkClicked( ) method, and copied the 'getUrl()',
'onComponentTag()' methods from the Link class. But, did not manage to
get it working.

Thanks




On 7 October 2010 16:00, Martin Makundi
martin.maku...@koodaripalvelut.com wrote:
 Add onclickbehavior?

 **
 Martin

 2010/10/7 Abid K abz...@gmail.com:
 Hi,

 I am using the ExternalLink class for external sites. I've noticed
 this class does not implement the ILinkListener interface and I am not
 able to monitor these clicks.

 I tried to implement the listener, but I did not get far. e.g.
 public class MonitorExternalLink extends ExternalLink implements 
 ILinkListener {
 ...
 }

 Does anyone know how I can implement a listener on the ExternalLink class?

 Thanks

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Re: Monitor external link clicks

[Abid K]

Thanks, that has worked.

On 7 October 2010 16:34, Martijn Dashorst martijn.dasho...@gmail.com wrote:
 That is the whole point of externallink: it links to an external URL.
 If you want to receive the request prior to sending the user onwards,
 use a proper Link and redirect the browser to the external url using
 setRequestTarget(new RedirectRequestTarget(url));

 Martijn

 On Thu, Oct 7, 2010 at 4:55 PM, Abid K abz...@gmail.com wrote:
 Hi,

 I am using the ExternalLink class for external sites. I've noticed
 this class does not implement the ILinkListener interface and I am not
 able to monitor these clicks.

 I tried to implement the listener, but I did not get far. e.g.
 public class MonitorExternalLink extends ExternalLink implements 
 ILinkListener {
 ...
 }

 Does anyone know how I can implement a listener on the ExternalLink class?

 Thanks

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When object is null

[Abid K]

I hope someone can help a newbie who is learning Wicket.

I have the following code which accepts a parameter and then does a database
query to get the 'Data' object. If the user enters the wrong Id the database
query will return null and in this case I want to notify the user the data
could not be found and any other component should be hidden.

But, when I get an null object the code stops working and a null exception
is thrown, any ideas? Or is there a elegant way to do this?

public class DataView extends WebPage {

  private Data data;

  public DataView(PageParameters parameters) {
long dataId = parameters.getLong(dataId);

DataDao dataDao = new DataDao();
data = dataDao.getData( dataId );

// display message that the data could not be found
Label dataNotFound = new Label(dataNotFound, Data could not be
found);
dataNotFound.setVisible(data == null);

// otherwise display the panel containing the data
SomePanel panel = new SomePanel(somePanel);
panel.setVisible(data != null);

add(dataNotFound);
add(panel);
  }

  public class SomePanel extends Panel {
public SomePanel(String id) {
  super(id);
  // this throws null exception when data is null
  Label label = new Label(someLabel, String.valueOf(data.getId()));
  add(label);
}
  }
}

Thanks

Re: When object is null

[Abid K]

Thanks Josh and Daniel - both methods have worked. I have gone with checking
if the object is null or not like so...

  public class SomePanel extends Panel {
public SomePanel(String id) {
  super(id);

  if ( data == null ) {
return;
  }

  Label label = new Label(someLabel, String.valueOf(data.getId()));
  add(label);
}
  }

I have decided to do this because I am not sure how I can format a date
without doing this...
  SimpleDateFormat dateFormat = new SimpleDateFormat( dd/MM/ );
  Label dateLabel = new Label( date, dateFormat.format( data.getDate(
) ) );

Thanks.