Ok. Please ignore the delete button for now. The problem is adding
elements at the Form onSubmit event.
This works only if the listView is not empty to begin with. If it is
empty to begin with, the new elements will not appear. If it is
populated with 1 item in the beginning, adding items will work fine.
This does not sound "natural" to me..
**
Martin
2008/2/27, Igor Vaynberg <[EMAIL PROTECTED]>:
> since you are using a button the listview has to be inside a form
>
> also,
>
>
> Button bb = new Button(DEL) {
>
> public void onSubmit() {
> super.onSubmit();
>
>
> // this is wrong, you should remove the item from the list
> and let the listview refresh rather then removing the wicket component
> - when listview redraws the item will be recreated...
> listviewlist.remove(custel); <== make sure your
> equals/hashcode is properly implemented
> }
> };
>
> bb.setdefaultformprocessing(false); <== you dont want validation,etc.
>
> item.add(bb);
>
>
> try the changes above and i suggest you read the wiki page on models...
>
> -igor
>
> On Tue, Feb 26, 2008 at 10:31 PM, Martin Makundi
>
> <[EMAIL PROTECTED]> wrote:
> > It pretty much takes just that copy pasted code and the populateItem
> > below. Here is also the HTML:
> >
> >
> > protected void populateItem(final ListItem item) {
> > CustomElement custel = (CustomElement) item.getModelObject();
> > item.add(new Label(START_DATE, new Model("dummy")));
> > item.add(new Label(END_DATE, new Model("dummy")));
> > {
> > TextField textField = new TextField(DESCRIPTION, new
> Model("Dummy"));
> > item.add(textField);
> > }
> > {
> > TextField textField = new TextField(DAYS, new Model("2")); //Dummy
> > item.add(textField);
> > }
> > {
> > Button bb = new Button(DEL) {
> > /**
> > * @see org.apache.wicket.markup.html.form.Button#onSubmit()
> > */
> > @Override
> > public void onSubmit() {
> > super.onSubmit();
> > item.remove();
> > }
> > };
> > item.add(bb);
> > }
> > }
> >
> >
> >
> > <html xmlns:wicket="http://wicket.sourceforge.net";>
> > <body>
> > <h2>Add a new period</h2>
> > <span wicket:id="feedback">Feedback messages will be here.</span>
> > <form name="testForm" wicket:id="testForm">
> > Start - end: <input type="text" wicket:id="endDate" size="10"/> -
> > <input type="text" wicket:id="startDate" size="10"/>
> > Description:
> > <input type="text" wicket:id="description" size="40"/>
> > <input type="submit" value="Add">
> > <h3>Current elements:</h3>
> > <table cellspacing="2" cellpadding="0" border="0">
> > <thead>
> > <tr>
> > <th align="center">Start date</th>
> > <th align="center">End date</th>
> > <th align="left">Description</th>
> > <th align="center">Days</th>
> > <th align="center">Delete</th>
> > </tr>
> > </thead>
> > <tbody>
> > <tr wicket:id="listView">
> > <td align="right" NOWRAP><span wicket:id="startDate"></span></td>
> > <td align="right" NOWRAP><span wicket:id="endDate"></span></td>
> > <td><input type="text" wicket:id="description" size="70"/></td>
> > <td><input type="text" wicket:id="days" size="70"/></td>
> > <td><input type="button" wicket:id="del" value="Del"/></td>
> > </tr>
> > </tbody>
> > </table>
> > </form>
> > </body>
> > </html>
> >
> >
> >
> >
> >
> >
> >
> >
> > 2008/2/27, Igor Vaynberg <[EMAIL PROTECTED]>:
> > > create a quickstart and i can take a look
> > >
> > > -igor
> > >
> > >
> > > On Tue, Feb 26, 2008 at 10:19 PM, Martin Makundi
> > >
> > > <[EMAIL PROTECTED]> wrote:
> > > > Funny. This works only if:
> > > > a) the listView is embedded in a Form component. (I would think it
> can
> > > > be independent)
> > > > b) the listView is not empty to begin with. If it is empty to begin
> > > > with, the new elements will not appear. If it is populated with 1
> item
> > > > in the beginning, adding items will work fine.
> > > >
> > > > So.. am I still doing something wrong?
> > > >
> > > >
> > > > Code is trivial:
> > > >
> > > > public class MyPage extends WebPage {
> > > >
> > > > public MyPage() {
> > > > Form f = new MyForm();
> > > > listViewElements = new LinkedList();
> > > > listViewElements.add(new CustomElement()); // If I add a dummy
> > > > initial element, the added elements work fine. Otherwise not
> > > > ListView l = new ListVIew(.., new PropertyModel(this,
> listViewElements));
> > > > f.add(l); // Otherwise it does not work at all without setting
> the
> > > > form as its parent; strange
> > > >
> > > > }
> > > >
> > > > class MyForm() {
> > > > onSubmit() {
> > > > listViewElements.add(new CustomElement());
> > > > info("Successful.");
> > > > }
> > > > }
> > > > }
> > > >
> > > > 2008/2/27, Igor Vaynberg <[EMAIL PROTECTED]>:
> > > >
> > > >
> > > > > try
> > > > >
> > > > > ListView l = new ListVIew(.., new propertymodel(this,
> "listViewElements"));
> > > > >
> > > > > -igor
> > > > >
> > > > >
> > > > > On Tue, Feb 26, 2008 at 9:41 PM, Martin Makundi
> > > > >
> > > > > <[EMAIL PROTECTED]> wrote:
> > > > > > > your listview model is probably caching the old list, and
> > > > > > > thus when it redraws you dont see the new items. paste
> your code and
> > > > > > > we can help you more.
> > > > > >
> > > > > > This is exactly what is happening. The listView is populated
> at the
> > > > > > Page constructor. If the page is reloaded after onSubmit, the
> > > > > > constructor is not called again because the page is already
> > > > > > instantiated. Code is trivial:
> > > > > >
> > > > > > public class MyPage extends WebPage {
> > > > > >
> > > > > > public MyPage() {
> > > > > > Form f = new MyForm();
> > > > > > listViewElements = new LinkedList();
> > > > > > ListView l = new ListVIew(.., listViewElements);
> > > > > > }
> > > > > >
> > > > > > class MyForm() {
> > > > > > onSubmit() {
> > > > > > listViewElements.add(new CustomElement());
> > > > > > info("Successful.");
> > > > > > // here I would like to acknowledge that the listView
> > > > > > // should be repainted to include the new element;
> otherwise
> > > > > > the old listView is shown
> > > > > >
> > > > > >
> > > > > > }
> > > > > > }
> > > > > > }
> > > > > >
> > > > > > >
> > > > > > > -igor
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > On Tue, Feb 26, 2008 at 8:50 PM, Martin Makundi
> > > > > > > <[EMAIL PROTECTED]> wrote:
> > > > > > > > Hi!
> > > > > > > >
> > > > > > > > Is it possible to refresh a listView during a form
> onSubmit event,
> > > > > > > > without using ajax? Is there any way (apart from ajax)
> to do it than
> > > > > > > > by explicitly reloading the page?
> > > > > > > >
> > > > > > > > If I reload the page I must store the feedback messages
> elsewhere
> > > > > > > > (session-scope feedback messages) and re-initialize all
> the components
> > > > > > > > "manually". Or is there maybe something like
> listView.repaint() or
> > > > > > > > page.refresh() which can be called from Form.onSubmit()?
> > > > > > > >
> > > > > > > > This is what I have:
> > > > > > > >
> > > > > > > > <feedback messages here/>
> > > > > > > > Item: [ ] (textfield) ["Add"
> Submit-button]
> > > > > > > >
> > > > > > > > <table>
> > > > > > > > <tr>previously added item</tr>
> > > > > > > > <tr>previously added item</tr>
> > > > > > > > <tr>previously added item</tr>
> > > > > > > > </table>
> > > > > > > >
> > > > > > > > This is what I want:
> > > > > > > >
> > > > > > > > When the "Add" -button is pressed, the form.onSubmit()
> is called and a
> > > > > > > > new element is added into the list of elements (used as
> the source for
> > > > > > > > the listView pupulating the table). I would then like
> to "reload" the
> > > > > > > > page and show a success message in the feedback panel.
> > > > > > > >
> > > > > > > > I know this can be maneuvered by actually reloading the
> page and using
> > > > > > > > session-scope feedback messages, but is there some
> "soft reload",
> > > > > > > > which sort-of shortcuts using session-scope feedback
> messages?
> > > > > > > >
> > > > > > > > Technically the difference is small, but conceptually I
> find "soft
> > > > > > > > refresh" more intuitive.
> > > > > > > >
> > > > > > > > **
> > > > > > > > Martin
> > > > > > > >
> > > > > > >
> > > > > > > >
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