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Posted to users@wicket.apache.org by "Boydens Joeri (OZ)" <jo...@oz.be> on 2009/04/01 08:32:12 UTC
clean way to add visibility constraints
Hi,
I have this page where I have different components that need to be show
or hidden, depending on the value of some model fields. I implemented
this by overriding the isVisible method of the components. Now I was
wondering if there is a less verbose way of handling this? (I can't
group the components because it's not possible in the html markup).
item.add(new TextField("value") {
public boolean isVisible() {
OnlineBookingParametersArticle article =
(OnlineBookingParametersArticle) getParent().getModel().getObject();
return
article.getArticle().getNumberInStock() > 0;
}
});
item.add(new
Label("article.numberOfArticlesLabel", "Geen beschikbaar") {
public boolean isVisible() {
OnlineBookingParametersArticle article =
(OnlineBookingParametersArticle) getParent().getModel().getObject();
return
article.getArticle().getNumberInStock() <= 0;
}
});
item.add(new
Label("article.description"));
item.add(new
WebMarkupContainer("participantInfo") {
public boolean
isVisible() {
OnlineBookingParametersArticle article =
(OnlineBookingParametersArticle) getParent().getModel().getObject();
return
article.getArticle().getNumberInStock() > 0;
}
}
.add(new
Label("article.numberOfRequiredParticipants"))
.add(new
Label("article.maximumNumberOfParticipants")));
item.add(new Link("contactLink"){
@Override
public void onClick(){
//TODO : go to correct
page
}
@Override
public boolean isVisible() {
OnlineBookingParametersArticle article =
(OnlineBookingParametersArticle) getParent().getModel().getObject();
return
article.getArticle().getNumberInStock() <= 0;
}
});
Re: clean way to add visibility constraints
Posted by Martijn Dashorst <ma...@gmail.com>.
one is static, the other dynamic.
You can make setVisible more dynamic by doing it in page.onBeforeRender
Martijn
On Wed, Apr 1, 2009 at 11:42 AM, Boydens Joeri (OZ) <jo...@oz.be> wrote:
>
> Is there prefered way between the methods below?
>
> if (condition) {
> component.setVisible(false);
> }
>
> OR
>
> component {
> @Override
> public boolean isVisible() {
> return !condition;
> }
>
> If I use the above I can group my components and set them with the
> setVisible method depending on the condition, with the last method I
> have to add the the condition to every component.
>
>
> -----Oorspronkelijk bericht-----
> Van: Daan van Etten [mailto:daan@stuq.nl]
> Verzonden: woensdag 1 april 2009 11:20
> Aan: users@wicket.apache.org
> Onderwerp: Re: clean way to add visibility constraints
>
> You could write a method that sets the visibility on the relevant
> components.
> The Form components have to be visible to that method though (or you
> have to use a visitor).
>
> Regards,
>
> Daan
>
> Op 1 apr 2009, om 08:32 heeft Boydens Joeri (OZ) het volgende
> geschreven:
>
>> Hi,
>>
>>
>>
>> I have this page where I have different components that need to be
>> show
>> or hidden, depending on the value of some model fields. I implemented
>> this by overriding the isVisible method of the components. Now I was
>> wondering if there is a less verbose way of handling this? (I can't
>> group the components because it's not possible in the html markup).
>>
>>
>>
>> item.add(new TextField("value") {
>>
>> public boolean isVisible() {
>>
>>
>> OnlineBookingParametersArticle article =
>> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>>
>> return
>> article.getArticle().getNumberInStock() > 0;
>>
>> }
>>
>> });
>>
>>
>>
>> item.add(new
>> Label("article.numberOfArticlesLabel", "Geen beschikbaar") {
>>
>> public boolean isVisible() {
>>
>>
>> OnlineBookingParametersArticle article =
>> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>>
>> return
>> article.getArticle().getNumberInStock() <= 0;
>>
>> }
>>
>> });
>>
>>
>>
>> item.add(new
>> Label("article.description"));
>>
>>
>>
>> item.add(new
>> WebMarkupContainer("participantInfo") {
>>
>> public boolean
>> isVisible() {
>>
>>
>> OnlineBookingParametersArticle article =
>> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>>
>> return
>> article.getArticle().getNumberInStock() > 0;
>>
>> }
>>
>> }
>>
>> .add(new
>> Label("article.numberOfRequiredParticipants"))
>>
>> .add(new
>> Label("article.maximumNumberOfParticipants")));
>>
>>
>>
>>
>>
>> item.add(new Link("contactLink"){
>>
>> @Override
>>
>> public void onClick(){
>>
>> //TODO : go to correct
>> page
>>
>> }
>>
>> @Override
>>
>> public boolean isVisible() {
>>
>>
>> OnlineBookingParametersArticle article =
>> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>>
>> return
>> article.getArticle().getNumberInStock() <= 0;
>>
>> }
>>
>> });
>>
>>
>>
>>
>>
>
>
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RE: clean way to add visibility constraints
Posted by "Boydens Joeri (OZ)" <jo...@oz.be>.
Is there prefered way between the methods below?
if (condition) {
component.setVisible(false);
}
OR
component {
@Override
public boolean isVisible() {
return !condition;
}
If I use the above I can group my components and set them with the
setVisible method depending on the condition, with the last method I
have to add the the condition to every component.
-----Oorspronkelijk bericht-----
Van: Daan van Etten [mailto:daan@stuq.nl]
Verzonden: woensdag 1 april 2009 11:20
Aan: users@wicket.apache.org
Onderwerp: Re: clean way to add visibility constraints
You could write a method that sets the visibility on the relevant
components.
The Form components have to be visible to that method though (or you
have to use a visitor).
Regards,
Daan
Op 1 apr 2009, om 08:32 heeft Boydens Joeri (OZ) het volgende
geschreven:
> Hi,
>
>
>
> I have this page where I have different components that need to be
> show
> or hidden, depending on the value of some model fields. I implemented
> this by overriding the isVisible method of the components. Now I was
> wondering if there is a less verbose way of handling this? (I can't
> group the components because it's not possible in the html markup).
>
>
>
> item.add(new TextField("value") {
>
> public boolean isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() > 0;
>
> }
>
> });
>
>
>
> item.add(new
> Label("article.numberOfArticlesLabel", "Geen beschikbaar") {
>
> public boolean isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() <= 0;
>
> }
>
> });
>
>
>
> item.add(new
> Label("article.description"));
>
>
>
> item.add(new
> WebMarkupContainer("participantInfo") {
>
> public boolean
> isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() > 0;
>
> }
>
> }
>
> .add(new
> Label("article.numberOfRequiredParticipants"))
>
> .add(new
> Label("article.maximumNumberOfParticipants")));
>
>
>
>
>
> item.add(new Link("contactLink"){
>
> @Override
>
> public void onClick(){
>
> //TODO : go to correct
> page
>
> }
>
> @Override
>
> public boolean isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() <= 0;
>
> }
>
> });
>
>
>
>
>
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Re: clean way to add visibility constraints
Posted by Daan van Etten <da...@stuq.nl>.
You could write a method that sets the visibility on the relevant
components.
The Form components have to be visible to that method though (or you
have to use a visitor).
Regards,
Daan
Op 1 apr 2009, om 08:32 heeft Boydens Joeri (OZ) het volgende
geschreven:
> Hi,
>
>
>
> I have this page where I have different components that need to be
> show
> or hidden, depending on the value of some model fields. I implemented
> this by overriding the isVisible method of the components. Now I was
> wondering if there is a less verbose way of handling this? (I can't
> group the components because it's not possible in the html markup).
>
>
>
> item.add(new TextField("value") {
>
> public boolean isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() > 0;
>
> }
>
> });
>
>
>
> item.add(new
> Label("article.numberOfArticlesLabel", "Geen beschikbaar") {
>
> public boolean isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() <= 0;
>
> }
>
> });
>
>
>
> item.add(new
> Label("article.description"));
>
>
>
> item.add(new
> WebMarkupContainer("participantInfo") {
>
> public boolean
> isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() > 0;
>
> }
>
> }
>
> .add(new
> Label("article.numberOfRequiredParticipants"))
>
> .add(new
> Label("article.maximumNumberOfParticipants")));
>
>
>
>
>
> item.add(new Link("contactLink"){
>
> @Override
>
> public void onClick(){
>
> //TODO : go to correct
> page
>
> }
>
> @Override
>
> public boolean isVisible() {
>
>
> OnlineBookingParametersArticle article =
> (OnlineBookingParametersArticle) getParent().getModel().getObject();
>
> return
> article.getArticle().getNumberInStock() <= 0;
>
> }
>
> });
>
>
>
>
>
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