date:20120222

Hi,

Is it possible to modify tag attribute (eg. add a CSS class) of
component which has set renderBodyOnly flag to true?
When using component.add(new AttributeModifier(...)) it has no effect,
because a tag in which this class attribute is appended is not
rendered in HTML (because of setRenderBodyOnly(true)).

Here is an example:
LinkContainer is a component (extends Panel) which has setRenderBodyOnly(true).

wicket:panel
a wicket:id=linkwicket:container wicket:id=linkContent[link
content]/wicket:container/a
/wicket:panel

Somewhere inside a page or panel:
add(new LinkContainer(link, ...).add(new AttributeModifier(class,
Model.of(my-link-style;
But of course this  class='my-link-style'  will not be rendered anywhere.

I want to add a class attribute to contained a tag but using a
behavior which can be added to the whole LinkContainer. Is it any
simple solution to achieve this?

--
DS

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Re: Stateless form broken with 1.5.4?

Yes, bad.
We noticed this soon after releasing 1.5.4 ...
It is fixed : https://issues.apache.org/jira/browse/WICKET-4365

On Wed, Feb 22, 2012 at 11:37 AM, Andrea Del Bene adelb...@ciseonweb.it wrote:
 Hi,

 I've found a problem with the latest Wicket version (1.5.4) and stateless
 forms. Now the values of input fields are passed via GET parameters and are
 always appended to form's action attribute and it's not possible to change
 field's value after the first submit.
 You can reproduce the problem running wicket-examples and going to path
 /stateless/foo (StatelessPage is mounted on this path).

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Re: How to modify attribute (eg. class) in component with setRenderBodyOnly(true) ?

Hi,

So you want to not have a (because this is what
.setRenderBodyOnly(true) does) and in the same time you want to set a
class an that non-existing tag ?!

The easiest way is to remove the call to .setRenderBodyOnly(true).

On Wed, Feb 22, 2012 at 11:38 AM, Daniel Stoch daniel.st...@gmail.com wrote:
 Hi,

 Is it possible to modify tag attribute (eg. add a CSS class) of
 component which has set renderBodyOnly flag to true?
 When using component.add(new AttributeModifier(...)) it has no effect,
 because a tag in which this class attribute is appended is not
 rendered in HTML (because of setRenderBodyOnly(true)).

 Here is an example:
 LinkContainer is a component (extends Panel) which has 
 setRenderBodyOnly(true).

 wicket:panel
        a wicket:id=linkwicket:container wicket:id=linkContent[link
 content]/wicket:container/a
 /wicket:panel

 Somewhere inside a page or panel:
 add(new LinkContainer(link, ...).add(new AttributeModifier(class,
 Model.of(my-link-style;
 But of course this  class='my-link-style'  will not be rendered anywhere.

 I want to add a class attribute to contained a tag but using a
 behavior which can be added to the whole LinkContainer. Is it any
 simple solution to achieve this?

 --
 DS

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 To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
 For additional commands, e-mail: users-h...@wicket.apache.org




-- 
Martin Grigorov
jWeekend
Training, Consulting, Development
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Re: How to modify attribute (eg. class) in component with setRenderBodyOnly(true) ?

No. I want to have a. When you use this LinkContainer from my
example in HTML like:
div wicket:id=link
/div

It will be rendered as:

a wicket:id=link.../a

So any attributes modified using behavior will disappear.


But if LinkContainer will not have setRenderBodyOnly(true), the the
corresponding HTML will be:

div wicket:id=link class='my-link-style'
  a wicket:id=link.../a
/div


--
DS

On Wed, Feb 22, 2012 at 11:49 AM, Martin Grigorov mgrigo...@apache.org wrote:
 Hi,

 So you want to not have a (because this is what
 .setRenderBodyOnly(true) does) and in the same time you want to set a
 class an that non-existing tag ?!

 The easiest way is to remove the call to .setRenderBodyOnly(true).

 On Wed, Feb 22, 2012 at 11:38 AM, Daniel Stoch daniel.st...@gmail.com wrote:
 Hi,

 Is it possible to modify tag attribute (eg. add a CSS class) of
 component which has set renderBodyOnly flag to true?
 When using component.add(new AttributeModifier(...)) it has no effect,
 because a tag in which this class attribute is appended is not
 rendered in HTML (because of setRenderBodyOnly(true)).

 Here is an example:
 LinkContainer is a component (extends Panel) which has 
 setRenderBodyOnly(true).

 wicket:panel
        a wicket:id=linkwicket:container wicket:id=linkContent[link
 content]/wicket:container/a
 /wicket:panel

 Somewhere inside a page or panel:
 add(new LinkContainer(link, ...).add(new AttributeModifier(class,
 Model.of(my-link-style;
 But of course this  class='my-link-style'  will not be rendered anywhere.

 I want to add a class attribute to contained a tag but using a
 behavior which can be added to the whole LinkContainer. Is it any
 simple solution to achieve this?

 --
 DS

 -
 To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
 For additional commands, e-mail: users-h...@wicket.apache.org




 --
 Martin Grigorov
 jWeekend
 Training, Consulting, Development
 http://jWeekend.com

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 For additional commands, e-mail: users-h...@wicket.apache.org


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Re: How to modify attribute (eg. class) in component with setRenderBodyOnly(true) ?

On Wed, Feb 22, 2012 at 12:01 PM, Daniel Stoch daniel.st...@gmail.com wrote:
 No. I want to have a. When you use this LinkContainer from my
 example in HTML like:
 div wicket:id=link
 /div

 It will be rendered as:

 a wicket:id=link.../a

 So any attributes modified using behavior will disappear.


 But if LinkContainer will not have setRenderBodyOnly(true), the the
 corresponding HTML will be:

 div wicket:id=link class='my-link-style'
  a wicket:id=link.../a
 /div

Now it is more clear what you do.
You need to add the AttributeModifier to the Link, not to the
LinkContainer if you want to manipulate a.



 --
 DS

 On Wed, Feb 22, 2012 at 11:49 AM, Martin Grigorov mgrigo...@apache.org 
 wrote:
 Hi,

 So you want to not have a (because this is what
 .setRenderBodyOnly(true) does) and in the same time you want to set a
 class an that non-existing tag ?!

 The easiest way is to remove the call to .setRenderBodyOnly(true).

 On Wed, Feb 22, 2012 at 11:38 AM, Daniel Stoch daniel.st...@gmail.com 
 wrote:
 Hi,

 Is it possible to modify tag attribute (eg. add a CSS class) of
 component which has set renderBodyOnly flag to true?
 When using component.add(new AttributeModifier(...)) it has no effect,
 because a tag in which this class attribute is appended is not
 rendered in HTML (because of setRenderBodyOnly(true)).

 Here is an example:
 LinkContainer is a component (extends Panel) which has 
 setRenderBodyOnly(true).

 wicket:panel
        a wicket:id=linkwicket:container wicket:id=linkContent[link
 content]/wicket:container/a
 /wicket:panel

 Somewhere inside a page or panel:
 add(new LinkContainer(link, ...).add(new AttributeModifier(class,
 Model.of(my-link-style;
 But of course this  class='my-link-style'  will not be rendered anywhere.

 I want to add a class attribute to contained a tag but using a
 behavior which can be added to the whole LinkContainer. Is it any
 simple solution to achieve this?

 --
 DS

 -
 To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
 For additional commands, e-mail: users-h...@wicket.apache.org




 --
 Martin Grigorov
 jWeekend
 Training, Consulting, Development
 http://jWeekend.com

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 For additional commands, e-mail: users-h...@wicket.apache.org


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jWeekend
Training, Consulting, Development
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Re: How to modify attribute (eg. class) in component with setRenderBodyOnly(true) ?

On Wed, Feb 22, 2012 at 12:11 PM, Martin Grigorov mgrigo...@apache.org wrote:
 On Wed, Feb 22, 2012 at 12:01 PM, Daniel Stoch daniel.st...@gmail.com wrote:
 No. I want to have a. When you use this LinkContainer from my
 example in HTML like:
 div wicket:id=link
 /div

 It will be rendered as:

 a wicket:id=link.../a

 So any attributes modified using behavior will disappear.


 But if LinkContainer will not have setRenderBodyOnly(true), the the
 corresponding HTML will be:

 div wicket:id=link class='my-link-style'
  a wicket:id=link.../a
 /div

 Now it is more clear what you do.
 You need to add the AttributeModifier to the Link, not to the
 LinkContainer if you want to manipulate a.


Well, I know it is possible in this way. But my question is more
general: does using behaviors which changes a markup (like
AttributeModifier) on components with setRenderBodyOnly(true) make
sense?

To add the AttributeModifier to the Link I have to write extra method
inside a LinkContainer which adds a behavior to enclosing component
(Link is created inside LinkContainer and because of ecapsulation it
should not be visible outside it). But the cleaner solution will be to
add a behavior to LinkContainer, but then it should be transparently
added to the one of its child components.
Then I can use AttributeModifier (or related behaviors) the same way
with component which has setRenderBodyOnly(true) or not. But now I
need to know a component implementation to decide if I can use such
modifiers with it or no.

--
DS

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Redirect to external page without jsessionid in referrer

2012-02-22 Thread geissbock

Hi folks,

I'm struggling with the documentation of ExternalLink (applies for both 1.4 and 
1.5): 
http://wicket.apache.org/apidocs/1.4/org/apache/wicket/markup/html/link/ExternalLink.html

I.e. especially with this paragraph:

Note: in the case when the support for cookies in the browser is disabled the 
user's jsessionid will leak in the 'Referrer' header after clicking this link. 
If this is a problem for the application then better use a Link which redirects 
to a shared resource (see WebApplication#mountResource(String, 
org.apache.wicket.request.resource.ResourceReference) , e.g. 
/myapp/redirecting-resource?url=...) which on its side redirects to the new 
URL using RedirectToUrlException. Another option is to use rel=noreferrer 
attribute in your markup but this will work only in the modern browsers 
(supporting HTML5 standard).

For several internal reasons which can't be discussed here, the jsessionid has 
to be contained in the URL and I want to achieve exactly what is described in 
the documentation: have a somewhat generic referrer which doesn't contain the 
jsessionid. But honestly, I am totally confused by the description. How could I 
mount something which is able to throw a RedirectToUrlException, i.e. something 
backed by Java logic, as a resource? As far as I understand the concept of 
shared resources they are always things like images, CSS, etc., but not pages 
or something similar.

Both creating a link to a shared a resource and throwing a 
RedirectToUrlException in the request cycle are fine by themselves, but I just 
can't see how to connect these two steps. Thus, I would be very pleased if 
someone could give me a hint on how to manage this.

Thanks! :-)

Cheers,

Michael

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Re: Redirect to external page without jsessionid in referrer

2012-02-22 Thread Jeff Schneller

If all you want to do is remove the jsessionid from the URL there is a wiki
entry on how to do this. It is under SEO optimization. This will force a new
session on every

Sent from my iPhone

On Feb 22, 2012, at 8:00 AM, geissb...@gmx.org wrote:

Hi folks,

I'm struggling with the documentation of ExternalLink (applies for both 1.4
and 1.5):
http://wicket.apache.org/apidocs/1.4/org/apache/wicket/markup/html/link/ExternalLink.html

I.e. especially with this paragraph:

Note: in the case when the support for cookies in the browser is disabled
the user's jsessionid will leak in the 'Referrer' header after clicking this
link. If this is a problem for the application then better use a Link which
redirects to a shared resource (see WebApplication#mountResource(String,
org.apache.wicket.request.resource.ResourceReference) , e.g.
/myapp/redirecting-resource?url=...) which on its side redirects to the new
URL using RedirectToUrlException. Another option is to use rel=noreferrer
attribute in your markup but this will work only in the modern browsers
(supporting HTML5 standard).

For several internal reasons which can't be discussed here, the jsessionid
has to be contained in the URL and I want to achieve exactly what is
described in the documentation: have a somewhat generic referrer which
doesn't contain the jsessionid. But honestly, I am totally confused by the
description. How could I mount something which is able to throw a
RedirectToUrlException, i.e. something backed by Java logic, as a resource?
As far as I understand the concept of shared resources they are always things
like images, CSS, etc., but not pages or something similar.

Both creating a link to a shared a resource and throwing a
RedirectToUrlException in the request cycle are fine by themselves, but I
just can't see how to connect these two steps. Thus, I would be very pleased
if someone could give me a hint on how to manage this.

Thanks! :-)

Cheers,

Michael

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Re: Redirect to external page without jsessionid in referrer

2012-02-22 Thread Jeff Schneller

So my last message got off.

This will force a new session on every request of the page since the jsessionid
is not in url and cookies are not being accepted by the browser.

I would look at the wiki entry and see if that is what you are looking for.

--
Jeff Schneller
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)

On Wednesday, February 22, 2012 at 8:31 AM, Jeff Schneller wrote:

If all you want to do is remove the jsessionid from the URL there is a wiki
entry on how to do this. It is under SEO optimization. This will force a new
session on every

Sent from my iPhone

On Feb 22, 2012, at 8:00 AM, geissb...@gmx.org (mailto:geissb...@gmx.org)
wrote:

Hi folks,

I'm struggling with the documentation of ExternalLink (applies for both 1.4
and 1.5):
http://wicket.apache.org/apidocs/1.4/org/apache/wicket/markup/html/link/ExternalLink.html

I.e. especially with this paragraph:

Note: in the case when the support for cookies in the browser is disabled
the user's jsessionid will leak in the 'Referrer' header after clicking
this link. If this is a problem for the application then better use a Link
which redirects to a shared resource (see
WebApplication#mountResource(String,
org.apache.wicket.request.resource.ResourceReference) , e.g.
/myapp/redirecting-resource?url=...) which on its side redirects to the
new URL using RedirectToUrlException. Another option is to use
rel=noreferrer attribute in your markup but this will work only in the
modern browsers (supporting HTML5 standard).

For several internal reasons which can't be discussed here, the jsessionid
has to be contained in the URL and I want to achieve exactly what is
described in the documentation: have a somewhat generic referrer which
doesn't contain the jsessionid. But honestly, I am totally confused by the
description. How could I mount something which is able to throw a
RedirectToUrlException, i.e. something backed by Java logic, as a resource?
As far as I understand the concept of shared resources they are always
things like images, CSS, etc., but not pages or something similar.

Both creating a link to a shared a resource and throwing a
RedirectToUrlException in the request cycle are fine by themselves, but I
just can't see how to connect these two steps. Thus, I would be very
pleased if someone could give me a hint on how to manage this.

Thanks! :-)

Cheers,

Michael

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Re: How to modify attribute (eg. class) in component with setRenderBodyOnly(true) ?

On Wed, Feb 22, 2012 at 12:31 PM, Martin Grigorov mgrigo...@apache.org wrote:
 On Wed, Feb 22, 2012 at 12:20 PM, Daniel Stoch daniel.st...@gmail.com wrote:
 On Wed, Feb 22, 2012 at 12:11 PM, Martin Grigorov mgrigo...@apache.org 
 wrote:
 On Wed, Feb 22, 2012 at 12:01 PM, Daniel Stoch daniel.st...@gmail.com 
 wrote:
 No. I want to have a. When you use this LinkContainer from my
 example in HTML like:
 div wicket:id=link
 /div

 It will be rendered as:

 a wicket:id=link.../a

 So any attributes modified using behavior will disappear.


 But if LinkContainer will not have setRenderBodyOnly(true), the the
 corresponding HTML will be:

 div wicket:id=link class='my-link-style'
  a wicket:id=link.../a
 /div

 Now it is more clear what you do.
 You need to add the AttributeModifier to the Link, not to the
 LinkContainer if you want to manipulate a.


 Well, I know it is possible in this way. But my question is more
 general: does using behaviors which changes a markup (like
 AttributeModifier) on components with setRenderBodyOnly(true) make
 sense?

 No.


 To add the AttributeModifier to the Link I have to write extra method
 inside a LinkContainer which adds a behavior to enclosing component
 (Link is created inside LinkContainer and because of ecapsulation it
 should not be visible outside it). But the cleaner solution will be to
 add a behavior to LinkContainer, but then it should be transparently
 added to the one of its child components.

 To which child exactly ? How to decide that for you ?

 Then I can use AttributeModifier (or related behaviors) the same way
 with component which has setRenderBodyOnly(true) or not. But now I
 need to know a component implementation to decide if I can use such
 modifiers with it or no.

 Each behavior has a reference to the component it is bound to. So you
 can assign your own Behavior to the parent class and then in
 behavior's onComponentTag, renderHead(), ... you can do whatever you
 need with the parent and all its children. It is a bit harder to get
 the children ComponentTags but it is possible: new
 MarkupStream(getMarkup()) and iterate over the elements in the
 MarkupStream.


Thanks for your feedback and suggestions.

I have done a simple behavior to achieve what I want. Maybe this is
not very elegant solution but it should work. It writes out attributes
added as AttributeModifiers to a parent component to a child component
which has this behavior.

public class AttributeModifierPropagator extends AbstractBehavior {

  private final MarkupContainer parent;

  public AttributeModifierPropagator(MarkupContainer parent) {
super();
if (parent == null) {
  throw new IllegalArgumentException(Argument [parent] cannot be null);
}
this.parent = parent;
  }

  @Override
  public void onComponentTag(Component component, ComponentTag tag) {
for (IBehavior behavior : parent.getBehaviors()) {
  if ((behavior instanceof AttributeModifier) || (behavior
instanceof SimpleAttributeModifier)) {
behavior.onComponentTag(component, tag);
  }
}
  }

}

And then inside a LinkContainer after creating nested Link link I can
add this behavior to it:
link.add(new AttributeModifierPropagator(this));

--
DS

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Re: Adding extra request parameters to AJAX calls

Thanks for the quick response.  However, I'm still a bit lost.  I'm currently
still using Wicket 1.4 (although upgrading to 1.5 is possible).  Both of the
links in your reply take me to pages that appear to be related to Wicket 6. 
They both talk about a class named AjaxRequestAttributes that does not
appear to exists in 1.4 or 1.5.  Was there an additional link that you meant
to include?

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Re: Adding extra request parameters to AJAX calls

On Wed, Feb 22, 2012 at 3:51 PM, gmparker2000 greg.par...@brovada.com wrote:
 Thanks for the quick response.  However, I'm still a bit lost.  I'm currently
 still using Wicket 1.4 (although upgrading to 1.5 is possible).  Both of the
 links in your reply take me to pages that appear to be related to Wicket 6.
 They both talk about a class named AjaxRequestAttributes that does not
 appear to exists in 1.4 or 1.5.  Was there an additional link that you meant
 to include?

Oh. Indeed the link is not there ...
http://code.google.com/p/londonwicket/downloads/detail?name=LondonWicket-Paint.zipcan=2q=

This project shows how to do it in pre 6.0


 --
 View this message in context: 
 http://apache-wicket.1842946.n4.nabble.com/Adding-extra-request-parameters-to-AJAX-calls-tp4405842p4410571.html
 Sent from the Users forum mailing list archive at Nabble.com.

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Training, Consulting, Development
http://jWeekend.com

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Re: DataTable and HeadersToolBar

On Wed, Feb 22, 2012 at 4:03 PM, grazia grazia.russolass...@gmail.com wrote:
 I am trying to use the
 org.apache.wicket.extensions.markup.html.repeater.data.table.DataTable
 following the example in Igor Vaynberg's Apache Wicket Cookbook. The line 
 table.addTopToolbar(new HeadersToolbar(table, null)); gives me the error I

It seems 'null' is not allowed as ISortStateLocator ..
Wicket should give you a better exception message ...

 pasted below; when I remove the line, my code renders the content of the
 table, but no headers, obviously. All code examples I find pass a null
 stateLocator to the constructor of HeadersToolbar(table, null).

  IColumnContact[] columns = new IColumn[3];
       columns[0] = new PropertyColumnContact(Model.of(Name), name,
 name);
       columns[1] = new PropertyColumnContact(Model.of(Phone), phone,
 phone);
       columns[2] = new PropertyColumnContact(Model.of(Email), email,
 email);

       final ContactProvider contactProvider = new ContactProvider();
       contactProvider.setData(contacts);

        DataTableContact table =
                new DataTableContact(contacts, columns, contactProvider,
 10);
        table.addBottomToolbar(new NavigationToolbar(table));

        table.addTopToolbar(new HeadersToolbar(table, null));
        add(table);




 SEVERE: Error attaching this container for rendering: [MarkupContainer
 [Componen
 t id = 1]]
 org.apache.wicket.WicketRuntimeException: Error attaching this container for
 ren
 dering: [MarkupContainer [Component id = 1]]
        at
 org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContai
 ner.java:1766)
        at org.apache.wicket.Component.onBeforeRender(Component.java:3966)
        at
 org.apache.wicket.Component.internalBeforeRender(Component.java:1066)

        at org.apache.wicket.Component.beforeRender(Component.java:1100)
        at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(
 MarkupContainer.java:1754)
 (...)
 *Caused by: java.lang.NullPointerException
        at
 org.apache.wicket.extensions.markup.html.repeater.data.sort.OrderByLi
 nk$CssModifier$1.getObject(OrderByLink.java:201)*
        at
 org.apache.wicket.extensions.markup.html.repeater.data.sort.OrderByLi
 nk$CssModifier$1.getObject(OrderByLink.java:206)
        at
 org.apache.wicket.extensions.markup.html.repeater.data.sort.OrderByLi
 nk$CssModifier.isEnabled(OrderByLink.java:220)
        at
 org.apache.wicket.Component.isBehaviorAccepted(Component.java:3900)
        at org.apache.wicket.Component.configure(Component.java:1167)
        at
 org.apache.wicket.Component.internalBeforeRender(Component.java:1053)

        at org.apache.wicket.Component.beforeRender(Component.java:1100)
        at
 org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContai
 ner.java:1754)
        ... 55 more

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-- 
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jWeekend
Training, Consulting, Development
http://jWeekend.com

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Re: Adding extra request parameters to AJAX calls

I gave that a try on a DropDownChoice with no success.  I'm probably doing
something wrong.  Here is what I tried:

I added this to the constructor of the page:

DropDownChoice myDropDown = new DropDownChoice(myDropDown);
myDropDown.add(new ConversationAjaxBehavior());
add(myDropDown);

And added this nested class to my page:

class ConversationAjaxBehavior extends AbstractDefaultAjaxBehavior {
@Override
protected void respond(AjaxRequestTarget target) {
}

@Override
public CharSequence getCallbackUrl() {
System.out.println(Adding conversation id);
return super.getCallbackUrl();
}
}

Unfortunately the getCallbackUrl never gets called.




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Re: Adding extra request parameters to AJAX calls

On Wed, Feb 22, 2012 at 4:50 PM, gmparker2000 greg.par...@brovada.com wrote:
 I gave that a try on a DropDownChoice with no success.  I'm probably doing
 something wrong.  Here is what I tried:

 I added this to the constructor of the page:

        DropDownChoice myDropDown = new DropDownChoice(myDropDown);
        myDropDown.add(new ConversationAjaxBehavior());
        add(myDropDown);

 And added this nested class to my page:

    class ConversationAjaxBehavior extends AbstractDefaultAjaxBehavior {

replace AbstractDefaultAjaxBehavior with AjaxEventBehavior
This behavior should fire on event, e.g. when the drop-down's value changes.

        @Override
        protected void respond(AjaxRequestTarget target) {
        }

        @Override
        public CharSequence getCallbackUrl() {
            System.out.println(Adding conversation id);
            return super.getCallbackUrl();
        }
    }

 Unfortunately the getCallbackUrl never gets called.




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Re: Adding extra request parameters to AJAX calls

I appreciate all the help but still no luck.  I changed things to look like
this:

DropDownChoice myDropDown = new DropDownChoice(myDropDown);
myDropDown.add(new ConversationAjaxBehavior(onchange));
add(myDropDown); 

and:

class ConversationAjaxBehavior extends AjaxEventBehavior {
public ConversationAjaxBehavior(String event) {
super(event);
}

@Override
public CharSequence getCallbackUrl() {
System.out.println(Adding conversation id); 
return super.getCallbackUrl() + cID=2;
}

@Override
protected void onEvent(AjaxRequestTarget target) {
}
}

The onEvent method is called when I change the selection but getCallbackURL
is still not being called.  

Just to be sure I've described what I'm trying to do properly here is
approximately what I would expect to see when viewing the source in my
browser after adding a conversation parameter (cID would be on the end of
the querystring):

select wicket:id=... id=... type=... name=... class=... 
onchange=var
wcall=wicketAjaxPost('?cID=2wicket:interface=:1:form: ..

So the onchange method would have a cID request parameter that is posted
when I changed the drop down selection.



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Re: Adding extra request parameters to AJAX calls

Put a break point at
org.apache.wicket.ajax.AbstractDefaultAjaxBehavior#getCallbackScript()
and see what happens
This method should be called when the page HTML is generated. Long
before you are able to click in the browser.

On Wed, Feb 22, 2012 at 5:18 PM, gmparker2000 greg.par...@brovada.com wrote:
 I appreciate all the help but still no luck.  I changed things to look like
 this:

    DropDownChoice myDropDown = new DropDownChoice(myDropDown);
    myDropDown.add(new ConversationAjaxBehavior(onchange));
    add(myDropDown);

 and:

    class ConversationAjaxBehavior extends AjaxEventBehavior {
        public ConversationAjaxBehavior(String event) {
            super(event);
        }

        @Override
        public CharSequence getCallbackUrl() {
            System.out.println(Adding conversation id);
            return super.getCallbackUrl() + cID=2;
        }

        @Override
        protected void onEvent(AjaxRequestTarget target) {
        }
    }

 The onEvent method is called when I change the selection but getCallbackURL
 is still not being called.

 Just to be sure I've described what I'm trying to do properly here is
 approximately what I would expect to see when viewing the source in my
 browser after adding a conversation parameter (cID would be on the end of
 the querystring):

 select wicket:id=... id=... type=... name=... class=...
            onchange=var
 wcall=wicketAjaxPost('?cID=2wicket:interface=:1:form: ..

 So the onchange method would have a cID request parameter that is posted
 when I changed the drop down selection.



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Re: How to write an HTTP header (to detect cookie disablement)?

2012-02-22 Thread Ian Marshall

Hi Martin,


COOKIES
---
I'm fine for this. My cookie code actually works. (But if the user's browser
disables cookies, then I want to use HTTP headers to be able to say The
user is on his/her second page, and still no cookie, so cookies are
definitely disabled (I cannot tell this on the first page).)


HTTP HEADERS

Many thanks for your tip about FireBug! Grand. (I had never thought about
that.)

All my web pages are descended from my PageBase class, which in turn
descends from Wicket's WebPage. I set my HTTP header in code in my PageBase
constructor using

  org.apache.wicket.request.http.WebResponse.addHeader(...);

In the first call to the app (which shows the home page), I can see this
header in the response headers using FireBug under GET PageHome?0. Sadly,
I cannot detect this in my PageBase constructor using

  import org.apache.wicket.request.cycle.RequestCycle;
  import org.apache.wicket.request.http.WebRequest;

  RequestCycle rcRequestCycle = getRequestCycle();
  WebRequest wreqRequest = (WebRequest)rcRequestCycle.getRequest();
  String sHeaderValue = wreqRequest.getHeader(X-MyApp-NotFirstPageBase-1);

since I get sHeaderValue to be null. Also, I cannot see this header in the
request headers using FireBug.

After clicking the link on my home page to the About us page, I can see
this header in the response headers using FireBug under GET PageAbout?1,
but nowhere else (including request headers even though I believe that I add
this to each web request unconditionally).

If I add

  org.apache.wicket.request.http.WebResponse.addHeader(...);

to my PageHome's form's onSubmit() method, then after form submission I do
see this header, but in the response only in

  POST page?1-1.IFormSubmitListener-frmForm

of

  http://localhost:8080/wicket/page?1-1.IFormSubmitListener-frmForm

(I am running locally).

Am I looking in the wrong place in my code (and thus in the request cycle)
to find my header in a request?



Martin Grigorov-4 wrote
 
 Hi Ian,
 
 If you add/set a header in the HttpServletResponse (even thru Wicket's
 WebResponse) then it will be written to the browser. You can verify
 that by investigating the request in Firebug's Net panel.
 
 If you want to send a cookie you should either use #addCookie() or
 set/addHeader(Set-Cookie). Check in google for more info.
 So you set the cookie in the current response and if not expired it
 should be available in the next *request* (HttpServletRequest or
 Wicket's WebRequest).
 

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Re: How to write an HTTP header (to detect cookie disablement)?

Hi,

Headers are not cookies.
By setting a header in the response you should not expect that it will
come in the next request.

A request header is set by the client (the browser in this case). You
can use UrlConnection or Apache HttpClient to set header request
which will be available thru WebRequest.getHeader().

Cookies work as you want - set it once in the response and then it
will travel around in the next requests/responses until expire.

On Wed, Feb 22, 2012 at 6:09 PM, Ian Marshall ianmarshall...@gmail.com wrote:
Hi Martin,

COOKIES
---
I'm fine for this. My cookie code actually works. (But if the user's browser
disables cookies, then I want to use HTTP headers to be able to say The
user is on his/her second page, and still no cookie, so cookies are
definitely disabled (I cannot tell this on the first page).)

HTTP HEADERS

Many thanks for your tip about FireBug! Grand. (I had never thought about
that.)

All my web pages are descended from my PageBase class, which in turn
descends from Wicket's WebPage. I set my HTTP header in code in my PageBase
constructor using

org.apache.wicket.request.http.WebResponse.addHeader(...);

In the first call to the app (which shows the home page), I can see this
header in the response headers using FireBug under GET PageHome?0. Sadly,
I cannot detect this in my PageBase constructor using

import org.apache.wicket.request.cycle.RequestCycle;
import org.apache.wicket.request.http.WebRequest;

RequestCycle rcRequestCycle = getRequestCycle();
WebRequest wreqRequest = (WebRequest)rcRequestCycle.getRequest();
String sHeaderValue = wreqRequest.getHeader(X-MyApp-NotFirstPageBase-1);

since I get sHeaderValue to be null. Also, I cannot see this header in the
request headers using FireBug.

After clicking the link on my home page to the About us page, I can see
this header in the response headers using FireBug under GET PageAbout?1,
but nowhere else (including request headers even though I believe that I add
this to each web request unconditionally).

If I add

org.apache.wicket.request.http.WebResponse.addHeader(...);

to my PageHome's form's onSubmit() method, then after form submission I do
see this header, but in the response only in

POST page?1-1.IFormSubmitListener-frmForm

http://localhost:8080/wicket/page?1-1.IFormSubmitListener-frmForm

(I am running locally).

Am I looking in the wrong place in my code (and thus in the request cycle)
to find my header in a request?

Martin Grigorov-4 wrote

Hi Ian,

If you add/set a header in the HttpServletResponse (even thru Wicket's
WebResponse) then it will be written to the browser. You can verify
that by investigating the request in Firebug's Net panel.

If you want to send a cookie you should either use #addCookie() or
set/addHeader(Set-Cookie). Check in google for more info.
So you set the cookie in the current response and if not expired it
should be available in the next *request* (HttpServletRequest or
Wicket's WebRequest).

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Re: Adding extra request parameters to AJAX calls

Got it.  I was overriding the wrong getCallbackURL method:

public CharSequence getCallbackUrl()

instead of:

public CharSequence getCallbackUrl(final boolean onlyTargetActivePage);

Thanks a lot!!

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Re: AjaxFormValidatingBehavior Submits Form When I Clicked Submit Button second Time

2012-02-22 Thread Andrea Del Bene


Hi,

what kind of exception do you get the second time?

Hi to everyone,
i have added some jquery validation code to my page and add
AjaxFormValidatingBehavior to my submit button.When i do not fill fields and
click on submit button, it gives error next to each field and does not
submit  anything.When i changed anything and click on submit button, page is
submitted and exception occurs.

I did not understand, why is it submitted on the second time?
Is there any idea?

With my best regards.

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Re: Reusing forms in different contexts

2012-02-22 Thread Bertrand Guay-Paquet


Hi Martin,

Thanks for the tip! This is an interesting approach as well.

On 22/02/2012 2:49 AM, Martin Grigorov wrote:

HI Bertrand,

I'm not quite sure whether this is your concern but take a look at
org.apache.wicket.markup.html.tree.BaseTree#newLink()
It uses LinkType to decide what kind of Link to create. You can use
the same approach.

On Wed, Feb 22, 2012 at 6:12 AM, Bertrand Guay-Paquet
ber...@step.polymtl.ca  wrote:

Thanks Igor. This is actually very close to what I used as my first
approach. The problem I had then was that depending on the context in which
the panel is used, the component must be one of the following:
1-A Link/Button, like in your code
2-A BookmarkablePageLink
3-An AjaxLink (ajax replacement, close modal window, etc.)

In your example, myformpanel can only work with case #1. This is essentially
the problem that has me scratching my head.

Regards,
Bertrand


On 21/02/2012 7:04 PM, Igor Vaynberg wrote:

*abstract* class myformpanel extends panel {
   public myformpanel(string id) {
  add(new button(save) {
 onsubmit() {
   *onsave(model);*
 });}

*protected abstract void onsave(imodel);*
}

add(new myformpanel(panel) {
   protected void onsave(imodel) {
  // do stuff
  setResponsePage() or replaceWith() or whatever you want
}}

-igor


On Tue, Feb 21, 2012 at 3:53 PM, Bertrand Guay-Paquet
ber...@step.polymtl.cawrote:

Hi,

I want to reuse the same form panels in different contexts and would like
to
know how fellow Wicket users achieve this. The core of the problem is how
to
let the user of a form panel specify where to navigate when the form is
submitted or canceled.

There are multiple possibilities for this:
-setResponsePage a bookmarkable page
-setResponsePage a page instance (to go back to the previous page for
example)
-replace the form panel via ajax
-close a modal window via ajax
-bubble a Wicket event

I've tried 2 approaches up to now :
-some form of markup inheritance. This requires subclassing the form
panel
at each usage site.
-navigation factories provided to the form panel which are responsible
for
populating it with the proper submit and cancel links/buttons.

Both of these approaches are kludgy and I have the feeling there has to
be a
better way. Which way is the Wicket way to let the user of a panel
customize its navigation?

Thanks,
Bertrand

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Re: Performance optimization

2012-02-22 Thread Bertrand Guay-Paquet


Hi,

Have you seen the following thread?
http://apache-wicket.1842946.n4.nabble.com/Shrinking-the-session-size-simply-by-zipping-it-Saved-my-day-td4402980.html
Perhaps this can help you.

That said, 10MB seems HUGE! Since you already use detachable models, 
maybe you could have a look at a memory profiler like Java VisualVM to 
find out which objects take the most space.


Bertrand

On 22/02/2012 10:12 PM, Martin Makundi wrote:

Hi!

Any experiences how to optimize the performance of a Page that
contains nested ListView:s with a total page serialized size of over
10 MB?

I have made all actual data objects non-serializable and available via
loadabledetachablemodel, but page Serialization seems to kill the
performance in ajax requests where I might be modifying just a single
cell in the maze.

I tried callinc removeAll at onDetach... it improved performance but
ofcourse event listeners don't work anymore ;) I could write custom
event listeners as workaround, though, which would know to call
onPopulate() before triggering an event.

Any experiences of similar situation?

**
Martin

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Wicket 1.5.4 - Application crashing on German umlaut characters

2012-02-22 Thread toytown


Wicket : 1.5.4
Tomcat : 6.0.28 to 6.0.35
JDK - 1.6  
 I have a simple search application where I could enter search parameters
like city name in a input textbox component. I am using displaying the
results in a separate page by passing search criteria  as pageparameters. 

searchForm.add(new Button(submitSearch) {

@Override
public void onSubmit() {
PageParameters params =  new PageParameters();
params.set(city, req.getCity());
setResponsePage(SearchResultPage.class, params);
}

});

If a pass normal String like 'Munich' without umlauts everything works ok
  The url is like http://localhost:8080/ecom/home/results?city=Munich  which
is ok and working fine

If I pass the city name with umlaut like 'München' then, I get url like 
http://localhost:8080/ecom/home/results?city=Münchencity=MÃ¼nchencity=MÃÂ¼nchencity=MÃÂÃÂ¼nchencity=MÃÂÃÂÃÂÃÂ¼nchencity=MÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ¼nchencity=MÃÂÃÂÃÂÃÂÃ

and EXCEPTION  trace in my log file looks like

05:18:28,092 DEBUG pache.wicket.page.PageAccessSynchronizer: 219 -
'http-8080-1' notifying blocked threads
23.02.2012 05:18:28 org.apache.coyote.http11.Http11Processor process
SCHWERWIEGEND: Error processing request
java.lang.ArrayIndexOutOfBoundsException: 8192
at
org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:730)
at
org.apache.coyote.http11.InternalOutputBuffer.write(InternalOutputBuffer.java:641)
at
org.apache.coyote.http11.InternalOutputBuffer.sendHeader(InternalOutputBuffer.java:514)
at
org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1637)
at
org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:956)
at org.apache.coyote.Response.action(Response.java:183)
at org.apache.coyote.Response.sendHeaders(Response.java:379)
at
org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:314)
at 
org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:274)
at 
org.apache.catalina.connector.Response.finishResponse(Response.java:493)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:317)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:662)
23.02.2012 05:18:28 org.apache.coyote.http11.Http11Processor process


   There itself is no RuntimeException thrown from wicket but somehow it
generates some strange url which causes ArrayIndexOutofBoundException.

Is this a bug in Wicket or that my preassumption was wrong that
pageparameters should be encoded by Wicket when displayed in the url ? What
is the wa to get around this problem ?

Thanks in advance.


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Re: Performance optimization

The problem is that the SERIALIZATION takes time. So it does not help to
ZIP AFTER serialization...

I have debugged it and it's just thousands and thousands of components.
Even printing the component paths alone take almost 10mb or more because
there is repetition ;)

**
Martin

2012/2/23 Bertrand Guay-Paquet ber...@step.polymtl.ca

Hi,

Have you seen the following thread?
http://apache-wicket.1842946.**n4.nabble.com/Shrinking-the-**
session-size-simply-by-**zipping-it-Saved-my-day-**td4402980.htmlhttp://apache-wicket.1842946.n4.nabble.com/Shrinking-the-session-size-simply-by-zipping-it-Saved-my-day-td4402980.html
Perhaps this can help you.

That said, 10MB seems HUGE! Since you already use detachable models, maybe
you could have a look at a memory profiler like Java VisualVM to find out
which objects take the most space.

Bertrand

On 22/02/2012 10:12 PM, Martin Makundi wrote:

Hi!

Any experiences how to optimize the performance of a Page that
contains nested ListView:s with a total page serialized size of over
10 MB?

I have made all actual data objects non-serializable and available via
loadabledetachablemodel, but page Serialization seems to kill the
performance in ajax requests where I might be modifying just a single
cell in the maze.

I tried callinc removeAll at onDetach... it improved performance but
ofcourse event listeners don't work anymore ;) I could write custom
event listeners as workaround, though, which would know to call
onPopulate() before triggering an event.

Any experiences of similar situation?

**
Martin

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Re: Performance optimization

2012-02-22 Thread Juha Syrjälä


Hi,

Wicket 1.5 has support for pluggable serializers via ISerializer 
interface, you could try to plug in different serializer 
implementations, for example this one 
https://github.com/wicketstuff/core/wiki/Kryo-Serializer . That should 
make the serialization bit faster.


--
Juha Syrjälä

On 02/23/2012 05:12 AM, Martin Makundi wrote:

Hi!

Any experiences how to optimize the performance of a Page that
contains nested ListView:s with a total page serialized size of over
10 MB?

I have made all actual data objects non-serializable and available via
loadabledetachablemodel, but page Serialization seems to kill the
performance in ajax requests where I might be modifying just a single
cell in the maze.

I tried callinc removeAll at onDetach... it improved performance but
ofcourse event listeners don't work anymore ;) I could write custom
event listeners as workaround, though, which would know to call
onPopulate() before triggering an event.

Any experiences of similar situation?

**
Martin

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Re: Performance optimization

But is serializing wicket native components only.. I would assume
wicket does it best.

2012/2/23 Juha Syrjälä juha.syrj...@gmail.com:
 Hi,

 Wicket 1.5 has support for pluggable serializers via ISerializer interface,
 you could try to plug in different serializer implementations, for example
 this one https://github.com/wicketstuff/core/wiki/Kryo-Serializer . That
 should make the serialization bit faster.

 --
 Juha Syrjälä


 On 02/23/2012 05:12 AM, Martin Makundi wrote:

 Hi!

 Any experiences how to optimize the performance of a Page that
 contains nested ListView:s with a total page serialized size of over
 10 MB?

 I have made all actual data objects non-serializable and available via
 loadabledetachablemodel, but page Serialization seems to kill the
 performance in ajax requests where I might be modifying just a single
 cell in the maze.

 I tried callinc removeAll at onDetach... it improved performance but
 ofcourse event listeners don't work anymore ;) I could write custom
 event listeners as workaround, though, which would know to call
 onPopulate() before triggering an event.

 Any experiences of similar situation?

 **
 Martin

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Re: Performance optimization

2012-02-22 Thread Juha Syrjälä


Hi,

I would guess that Wicket uses a normal Java built-in serializer by default.

Here are some benchmarks for different serializer implementations
https://github.com/eishay/jvm-serializers/wiki/ . Java's built-in 
serializer is not the fastest...


--
Juha Syrjälä

On 02/23/2012 08:45 AM, Martin Makundi wrote:

But is serializing wicket native components only.. I would assume
wicket does it best.

2012/2/23 Juha Syrjäläjuha.syrj...@gmail.com:

Hi,

Wicket 1.5 has support for pluggable serializers via ISerializer interface,
you could try to plug in different serializer implementations, for example
this one https://github.com/wicketstuff/core/wiki/Kryo-Serializer . That
should make the serialization bit faster.

--
Juha Syrjälä


On 02/23/2012 05:12 AM, Martin Makundi wrote:


Hi!

Any experiences how to optimize the performance of a Page that
contains nested ListView:s with a total page serialized size of over
10 MB?

I have made all actual data objects non-serializable and available via
loadabledetachablemodel, but page Serialization seems to kill the
performance in ajax requests where I might be modifying just a single
cell in the maze.

I tried callinc removeAll at onDetach... it improved performance but
ofcourse event listeners don't work anymore ;) I could write custom
event listeners as workaround, though, which would know to call
onPopulate() before triggering an event.

Any experiences of similar situation?

**
Martin

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Re: Performance optimization

I think that would be something that should be implemented at wicket
core... anybody done this before?

Is there any way to tell wicket NOT to serialize a page? For example
give a timer if user does not invoke the page for 1 minutes it
will not be serializeed..?

**
Martin

2012/2/23 Juha Syrjälä juha.syrj...@gmail.com:
 Hi,

 I would guess that Wicket uses a normal Java built-in serializer by default.

 Here are some benchmarks for different serializer implementations
 https://github.com/eishay/jvm-serializers/wiki/ . Java's built-in serializer
 is not the fastest...

 --
 Juha Syrjälä


 On 02/23/2012 08:45 AM, Martin Makundi wrote:

 But is serializing wicket native components only.. I would assume
 wicket does it best.

 2012/2/23 Juha Syrjäläjuha.syrj...@gmail.com:

 Hi,

 Wicket 1.5 has support for pluggable serializers via ISerializer
 interface,
 you could try to plug in different serializer implementations, for
 example
 this one https://github.com/wicketstuff/core/wiki/Kryo-Serializer . That
 should make the serialization bit faster.

 --
 Juha Syrjälä


 On 02/23/2012 05:12 AM, Martin Makundi wrote:


 Hi!

 Any experiences how to optimize the performance of a Page that
 contains nested ListView:s with a total page serialized size of over
 10 MB?

 I have made all actual data objects non-serializable and available via
 loadabledetachablemodel, but page Serialization seems to kill the
 performance in ajax requests where I might be modifying just a single
 cell in the maze.

 I tried callinc removeAll at onDetach... it improved performance but
 ofcourse event listeners don't work anymore ;) I could write custom
 event listeners as workaround, though, which would know to call
 onPopulate() before triggering an event.

 Any experiences of similar situation?

 **
 Martin

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Re: Performance optimization

(ofcourse I mean invoke within 1 minute...)

2012/2/23 Martin Makundi martin.maku...@koodaripalvelut.com:
 I think that would be something that should be implemented at wicket
 core... anybody done this before?

 Is there any way to tell wicket NOT to serialize a page? For example
 give a timer if user does not invoke the page for 1 minutes it
 will not be serializeed..?

 **
 Martin

 2012/2/23 Juha Syrjälä juha.syrj...@gmail.com:
 Hi,

 I would guess that Wicket uses a normal Java built-in serializer by default.

 Here are some benchmarks for different serializer implementations
 https://github.com/eishay/jvm-serializers/wiki/ . Java's built-in serializer
 is not the fastest...

 --
 Juha Syrjälä


 On 02/23/2012 08:45 AM, Martin Makundi wrote:

 But is serializing wicket native components only.. I would assume
 wicket does it best.

 2012/2/23 Juha Syrjäläjuha.syrj...@gmail.com:

 Hi,

 Wicket 1.5 has support for pluggable serializers via ISerializer
 interface,
 you could try to plug in different serializer implementations, for
 example
 this one https://github.com/wicketstuff/core/wiki/Kryo-Serializer . That
 should make the serialization bit faster.

 --
 Juha Syrjälä


 On 02/23/2012 05:12 AM, Martin Makundi wrote:


 Hi!

 Any experiences how to optimize the performance of a Page that
 contains nested ListView:s with a total page serialized size of over
 10 MB?

 I have made all actual data objects non-serializable and available via
 loadabledetachablemodel, but page Serialization seems to kill the
 performance in ajax requests where I might be modifying just a single
 cell in the maze.

 I tried callinc removeAll at onDetach... it improved performance but
 ofcourse event listeners don't work anymore ;) I could write custom
 event listeners as workaround, though, which would know to call
 onPopulate() before triggering an event.

 Any experiences of similar situation?

 **
 Martin

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Re: Performance optimization