Am 11.11.2009 um 15:59 schrieb Ernesto Reinaldo Barreiro:
> If you reload the page when selecting the element, instead of using AJAX, I
> guess the same will work because you have a selected article... I think AJAX
> is just a detail here, maybe you can use
>
> protected boolean wantOnSelectionChangedNotifications()
> {
> return false;
> }
>
> on DropDownChoice?
>
From my understanding, I need wantOnSelectionChangedNotifications()
returning TRUE, otherwise onSelectionChanged() is never triggered.
My current approach as follows. That's working but it doesn't feel right.
To clumsy. Any ideas? (and I beg your pardon for mixing german
with english in the code ;) )
package view;
..some imports...
public class AddArticlePage extends StorePage {
private AddArticlePanel addArticlePanel;
@SuppressWarnings("unchecked")
public AddArticlePage() {
addArticlePanel = new AddArticlePanel("addArticlePanel");
addArticlePanel.setVisible(false);
DropDownChoice dropDownType = new DropDownChoice("dropDownType",
new PropertyModel(this, "selected"),
Artikel.TYPELIST) {
protected boolean wantOnSelectionChangedNotifications()
{
return true;
}
@Override
protected void onSelectionChanged(final Object
newSelection) {
System.out.println("SELECTION CHANGED!");
System.out.println("new Selection = " +
(String) newSelection);
addArticlePanel.setVisibleFields((String)
newSelection);
addArticlePanel.setVisible(true);
}
};
Form formAdd = new Form("addArticleForm") {
@Override
protected void onSubmit() {
System.out.println("Added Article...");
}
};
add(dropDownType);
add(addArticlePanel);
add(formAdd);
}
}
/***** THE PANEL CLASS ******/
public class AddArticlePanel extends Panel {
private TextField artikelNummer;
private TextField preis;
private TextField erscheinungsJahr;
private TextField beschreibung;
private TextField titel;
//fields for BOOK
private TextField isbn;
private TextField autor;
private TextField verlag;
//fields for CD
private TextField label;
private TextField artist;
public AddArticlePanel(String id) {
super(id);
artikelNummer = new TextField("artikelNummer", new Model());
preis = new TextField("preis", new Model());
erscheinungsJahr = new TextField("erscheinungsJahr", new
Model());
beschreibung = new TextField("beschreibung", new Model());
titel = new TextField("titel", new Model());
isbn = new TextField("isbn", new Model());
autor = new TextField("autor", new Model());
verlag = new TextField("verlag", new Model());
label = new TextField("label", new Model());
artist = new TextField("artist", new Model());
add(artikelNummer);
add(preis);
add(erscheinungsJahr);
add(beschreibung);
add(titel);
add(isbn);
add(autor);
add(verlag);
add(label);
add(artist);
// THIS WHOLE THING WOULD HAVE TO BE DONE FOR EACH ITEM AGAIN TO
// DISPLAY A LABEL IN FRONT OF EACH TEXTFIELD, HOLDING A DESCRIPTION
// SOUNDS AWFULL!
}
//could probably be optimised
public void setVisibleFields(String type) {
if (type.equals("BOOK")) {
isbn.setVisible(true);
autor.setVisible(true);
verlag.setVisible(true);
label.setVisible(false);
artist.setVisible(false);
}
else {
isbn.setVisible(false);
autor.setVisible(false);
verlag.setVisible(false);
label.setVisible(true);
artist.setVisible(true);
}
}
}
Comments please :)
> Best,
>
> Ernesto
>
> On Wed, Nov 11, 2009 at 3:45 PM, srm <s...@schokokeks.org> wrote:
>
>>
>> Am 11.11.2009 um 15:25 schrieb Ernesto Reinaldo Barreiro:
>>
>>> I have used something similar to
>> [snip]
>> [snap]
>>>
>>> for such situations... I delegate creation to a factory class (so that
>> new
>>> products can be plugged in).
>>>
>>> Best,
>>>
>>> Ernesto
>>>
>>
>>
>> Thank you for this example.
>> But I'm bound to not use Ajax/JavaScript...and now I'm stuck.
>>
>> Regards,
>> Stephan
>>
>>
>>
>>> On Wed, Nov 11, 2009 at 2:53 PM, srm <s...@schokokeks.org> wrote:
>>>
>>>> How would you approach the following:
>>>> PageA is used to insert an article. At first, the user chooses what kind
>> of
>>>> article to insert (DropDownChoice).
>>>> When the User made his choice, a coresponding form should be
>> loaded/visible
>>>> underneath the
>>>> DropDownChoice. That's all to be solved without JavaScript.
>>>> My current idea is currently to add an Panel (AddArticlePanel) which
>> holds
>>>> all fields for any kind of article
>>>> and make them visible depending on what the user has chosen (using
>>>> onSelectionChanged).
>>>> But that seems like a brute approach so I wanted to get your opinions on
>>>> this.
>>>>
>>>> Further information will be happily provided.
>>>>
>>>> Regards,
>>>> Stephan
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>>
>>
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