>From javadoc of ListView
* <p>
* <strong>WARNING:</strong> though you can nest ListViews within Forms,
you HAVE to set the
* setReuseItems property to true in order to have validation work
properly. By default,
* setReuseItems is false, which has the effect that ListView replaces all
child components by new
* instances. The idea behind this is that you always render the fresh
data, and as people usually
* use ListViews for displaying read-only lists (at least, that's what we
think), this is good
* default behavior. <br />
* However, as the components are replaced before the rendering starts, the
search for specific
* messages for these components fails as they are replaced with other
instances. Another problem is
* that 'wrong' user input is kept as (temporary) instance data of the
components. As these
* components are replaced by new ones, your user will never see the wrong
data when setReuseItems
* is false.
* </p>
On Mon, May 6, 2013 at 5:32 AM, Bruno Moura <brunormo...@gmail.com> wrote:
> I have implemented a listView and every time that a new item is added in
> this ListView the values inserted in the textField and selected in a
> DropDownChoice are lost.
>
> The following pictures show what's happen before and after add a new
> ListView item:
>
> [image: Imagem inline 1]
>
> And after Add a new item:
>
> [image: Imagem inline 1]
>
> I'm implemented the code bellow:
>
>
>
>
> var listData = workSheetDAO.listWorkSheetUser(selectedUser,
> beginDate, endDate)
>
> var lbPeriodTotal = new Label("periodTotal")
> lbPeriodTotal.setOutputMarkupId(true)
> add(lbPeriodTotal)
>
> add(new ListView[WorkSheet]("listWorkSheet", listData) {
>
> override protected def onBeforeRender() {
> super.onBeforeRender()
> }
>
> def populateItem(item: ListItem[WorkSheet]) = {
> var workSheet = item.getModelObject()
>
> item.add(new LinkDate("initDate", workSheet, 1))
> item.add(new LinkDate("endDate", workSheet, 1))
>
> item.add(new TextField("description"))
>
> val listCustomer: java.util.List[Customer] =
> customerDAO.listCustomers
>
> item.add(new DropDownChoice("customerSelection", listCustomer,
> new ChoiceRenderer[Customer]("id")))
>
> if (workSheet.endDate == None) {
> item.add(new Label("total", ""))
> } else {
> var period = new Period(workSheet.initDate,
> workSheet.endDate.get)
> periodTotal = periodTotal.plus(period)
> lbPeriodTotal.setDefaultModel(new
> Model(periodTotal.toPeriod().normalizedStandard().toString(getFormatter())))
> period = period.normalizedStandard()
> item.add(new Label("total", period.toString(getFormatter())))
> }
>
> }
> }
>
> private class LinkDate(id: String, workSheet: WorkSheet, type: Int)
> extends Link[String](id) {
>
> setEnabled(false)
> add(new Label("label", new Model[String]() {
> override def getObject(): String = {
> var result = ""
> if (type == 1) {
> result = workSheet.initDate.toString("dd/MM/YYYY HH:mm:ss")
> } else
> result = workSheet.endDate.toString("dd/MM/YYYY HH:mm:ss")
> return result
> }
> }))
>
> def onClick() {}
> }
>
>
> The only values preserved are the values of the labels.
>
> Please, someone could help me, thanks
>
>
>
> Bera
>
--
Regards - Ernesto Reinaldo Barreiro
