Re: Keep the state or value of a DropDownChoice and TextField both inside a ListView
Thanks Ernesto for your help
Bruno Moura
2013/5/5 Ernesto Reinaldo Barreiro
> From javadoc of ListView
>
> *
> * WARNING: 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.
> * 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.
> *
>
>
>
> On Mon, May 6, 2013 at 5:32 AM, Bruno Moura 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/ HH:mm:ss")
> > } else
> > result = workSheet.endDate.toString("dd/MM/ 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
>
Re: Keep the state or value of a DropDownChoice and TextField both inside a ListView
>From javadoc of ListView
*
* WARNING: 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.
* 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.
*
On Mon, May 6, 2013 at 5:32 AM, Bruno Moura 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/ HH:mm:ss")
> } else
> result = workSheet.endDate.toString("dd/MM/ 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
Keep the state or value of a DropDownChoice and TextField both inside a ListView
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/ HH:mm:ss")
} else
result = workSheet.endDate.toString("dd/MM/ HH:mm:ss")
return result
}
}))
def onClick() {}
}
The only values preserved are the values of the labels.
Please, someone could help me, thanks
Bera
