I have a DataTable (Primefaces 3.5, JSF 2.0) which is populated from a database. In the first column of this table, checkboxes are displayed (multiple row selection).
After selecting row(s), when a button (<p:commandButton>) is pressed, the selected rows are expected to be deleted from the database.
Before deleting row(s), a confirm message regarding the deletion of the selected row(s) is displayed in <p:confirmDialog> with two buttons Yes and No something like the following.
Test.xhtml:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition template="template/Template.xhtml"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:c="http://java.sun.com/jsp/jstl/core">
<ui:define name="title">Test</ui:define>
<ui:define name="content">
<h:form id="form">
<p:dataTable id="dataTable" var="row" value="#{testManagedBean.list}"
selection="#{testManagedBean.selectedValues}"
rowKey="#{row.id}"
rowIndexVar="rowIndex">
<p:column selectionMode="multiple" style="width:5%; text-align: center;">
<f:facet name="footer">
----------------> <p:commandButton actionListener="#{testManagedBean.deleteMultipleActionListener}" oncomplete="confirmDeleteMultiple.show()" update=":form:confirmDialogDeleteMultiple" process=":form:dataTable" icon="ui-icon ui-icon-close"/>
</f:facet>
</p:column>
<p:column headerText="Index">
<h:outputText value="#{rowIndex+1}"/>
</p:column>
<p:column id="id" headerText="Id">
<h:outputText value="#{row.id}"/>
</p:column>
<p:column id="countryName" headerText="Description">
<h:outputText value="#{row.description}"/>
</p:column>
</p:dataTable>
---------------><p:confirmDialog id="confirmDialogDeleteMultiple" widgetVar="confirmDeleteMultiple" appendToBody="true" message="Delete row(s)?" showEffect="true" hideEffect="true" header="Deletion of row." severity="alert" closeOnEscape="true" closable="true">
<p:commandButton id="confirmDeleteMultiple" value="Yes" oncomplete="confirmDeleteMultiple.hide()" actionListener="#{testManagedBean.deleteMultiple}" process="#this dataTable" update="dataTable"/>
<p:commandButton id="declineDeleteMultiple" value="No" onclick="confirmDeleteMultiple.hide()" type="button" />
</p:confirmDialog>
</h:form>
</ui:define>
</ui:composition>
The managed bean:
#ManagedBean
#ViewScoped
public final class TestManagedBean implements Serializable
{
#EJB(mappedName="ejb/JNDI")
private TestService testService;
private List<Test> list;
private List<Test>selectedValues;
public TestManagedBean(){}
#PostConstruct
public void init()
{
list=testService.getList();
}
public List<Test> getList() {
return list;
}
public List<Test> getSelectedValues() {
return selectedValues;
}
public void setSelectedValues(List<Test> selectedValues) {
this.selectedValues = selectedValues;
}
public void deleteMultipleActionListener(ActionEvent actionEvent)
{
//Just show a warning message, when the delete button is pressed.
for(Test test:selectedValues)
{
System.out.println(test.getId()+" : "+test.getDescription());
}//Displays the list.
}
public void deleteMultiple(ActionEvent actionEvent)
{
System.out.println("multiple");
for(Test test:selectedValues)
{
System.out.println(test.getId()+" : "+test.getDescription());
}//The list is not null and empty.
}
}
When the button (indicated by an arrow in XHTML) is pressed, the deleteMultipleActionListener() method in the managed bean is invoked where it simply displays the list which is populated by the selected rows and the confirm dialog as shown in XHTML appears afterwards. (This is just to show a warning message before deletion. The loop in this method is just for the demonstration).
When the Yes button on the confirm dialog is pressed, the deleteMultiple() method is invoked which is responsible for actual deletion of rows (actionListioner in <p:commandButton> inside <p:confirmDialog>) and the deletion of rows should be performed but here the list of the selected rows retrieved here is empty (not null).
The resulting list inside the deleteMultiple() method is empty because of <f:view> on the template page. The template page is shown below.
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="#{localeBean.language}"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core">
--------->
<f:view locale="#{localeBean.locale}" encoding="UTF-8" contentType="text/html">
<f:loadBundle basename="messages.ResourceBundle" var="messages"/>
<h:head><title><ui:insert name="title">Default Title</ui:insert></title></h:head>
<h:body>
<p:layout fullPage="true">
<p:layoutUnit position="north" size="135" collapsed="false" resizable="false" closable="false" collapsible="false" gutter="6">
<h:form>
<h:selectOneMenu id="languages" value="#{localeBean.language}" onchange="submit();" style="position: absolute; right: 0; top: 50px;">
<f:selectItem itemValue="en" itemLabel="English" />
<f:selectItem itemValue="hi" itemLabel="Hindi" />
</h:selectOneMenu>
</h:form>
</p:layoutUnit>
<p:layoutUnit position="west" id="leftPanel" size="225" header="Menu Item" resizable="false" closable="false" collapsible="true" gutter="6">
</p:layoutUnit>
<p:layoutUnit position="center" size="2500" maxSize="2500">
<ui:insert name="content">Put default content here, if any.</ui:insert>
</p:layoutUnit>
</p:layout>
</h:body>
</f:view>
</html>
When I remove this template from the above Test.xhtml page and use this <f:view> tag on the Test.xhtml page itself, everything works fine and the list of the selected rows inside the deleteMultiple() method is obtained correctly.
So, what is going wrong? Why does the list become empty when the Yes button is pressed, if the template page is enclosed by <f:view>? Is it wrong? How to accomplish this? (<f:view> is used for the localization of the application as it can be imagined).
Your problem is solved when you replace the process="#this datatable" in your confirmDeleteMultiple by process="#this", which makes the button component only be processed. In fact you don't need Ajax to process your datatable when you send the deletion confirmation, because values for deletion are already stored in the bean since previous step (that's the main benefit of the view scope).
Making your datatable to be processed in your Ajax request invokes again the setSelectedValues setter, so the original value is getting overriden by the new (empty) selection.
Related
I'm having this really weird issue where my commandLinkonly work if I have BOTH links in the same view.
Works fine, both links:
<ui:composition template="../../template.xhtml" xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
<ui:define name="content">
<h:form>
<p:dataTable var="v" value="#{myBean.myList}">
<p:column headerText="Name">
<h:commandLink value="Go to next page" action="#{myBean.doThing(v)}" />
<p:commandLink value="Go to next page" action="#{myBean.doThing(v)}" />
</p:column>
</p:dataTable>
<p:commandButton value="Submit" ajax="false" actionListener="#{myBean.submit}" />
</h:form>
</ui:define>
</ui:composition>
But if I remove either link, it doesn't even reach the method doThing() and reloads an empty page.
My bean:
#ManagedBean(name="myBean")
#RequestScoped
public class MyBean {
private List<Object> myList = new ArrayList<>();
public MyBean() {
}
public String doThing(Object obj) {
// This never prints if I remove one of the links
System.out.println("You're doing the thing!");
return "nextView?faces-redirect=true"
}
// Getters, setters etc.
}
I'm using JSF 2.0 and GlassFish 4.0.
How can I fix this and why is it happening?
I have a commandLink in a p:dataTable in another view and it's working fine.
EDIT:
Added the complete XML for the composition part of the view. The partial is inside a template:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
<h:head>
<!-- css imports, titles etc -->
</h:head>
<h:body>
<ui:insert name="menu">
<ui:include src="./default/content.xhtml" />
</ui:insert>
</h:body>
</html>
I am using PF5, Jboss7, Mojarra 2.2 with Jdk1.7.
I have a dynamic tree with context menu. When I click on the menuitem, the page appears in the content panel. However, after that, looks like i lose all the listeners on the page including the tree. Cannot expand, second menuitem does not respond, basically, primefaces removes all the listeners on the page or, perhaps removes the form component, not sure.
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui">
<h:head>
<title>IPMS Navigation Tree</title>
<h:outputStylesheet library="stylesheet" name="lookfeel.css" />
</h:head>
<h:body>
<p:layout fullPage="true">
<p:layoutUnit position="west" resizable="true" size="400"
minSize="100">
<h:form id="navForm" prependId="false">
<p:tabView>
<p:tab title="Domains">
<ui:include src="TabDomains.xhtml"/>
</p:tab>
<p:tab title="Orgs">
<ui:include src="TabOrgs.xhtml"/>
</p:tab>
<p:tab title="Admin">
<ui:include src="TabAdmin.xhtml"/>
</p:tab>
</p:tabView>
</h:form>
</p:layoutUnit>
<p:layoutUnit position="center">
<h:form id="frmContent" prependId="false">
<p:panel id="frmPanel">
<ui:include src="#{menuController.page}.xhtml" />
</p:panel>
</h:form>
</p:layoutUnit>
</p:layout>
</h:body>
</html>
TabDomains.xhtml is
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:ui="http://java.sun.com/jsf/facelets">
<p:tree id="domains" value="#{treeController.root}"
selectionMode="single"
selection="#{treeController.selectedDomain}"
var="node" dynamic="true" cache="false">
<p:ajax event="expand" listener="#{treeController.onNodeExpand}" />
<p:treeNode>
<h:outputText value="#{node}" />
</p:treeNode>
</p:tree>
<p:contextMenu for="domains">
<p:menuitem id="propertiesMenu" value="Properties" update=":frmContent:frmPanel"
actionListener="#{menuController.viewDomainProperties}">
</p:menuitem>
<p:menuitem id="editZoneMenu" value="Edit Zone" update=":frmContent:frmPanel"
actionListener="#{menuController.viewEditZone}"
icon="ui-icon-close">
</p:menuitem>
</p:contextMenu>
</ui:composition>
And the backing bean is:
public class MenuController extends Controller
{
private static final Logger logger = Logger.getInstance(MenuController.class);
private String page;
public MenuController()
{
super();
this.page="MainContent";
}
public String getPage()
{
return page;
}
public void setPage(String page)
{
this.page = page;
}
public void viewEditZone()
{
logger.debug("begin viewEditZone");
this.page="EditZone";
}
public void viewDomainProperties()
{
logger.debug("begin viewDomainProperties");
this.page="DomainProperties";
}
}
I tested this in PF4 and it works fine. Any help or pointer to fix this is greatly appreciated. Thank You.
I generated a Primefaces based CRUD website starting from JPA Entities with netbeans and after adjusting the Update dialog to fit my needs I am experiencing several problems. The domain Model is quite easy: I have an entity Invitation which contains several Guests.
#Entity
public class Invitation implements Serializable {
...
#OneToMany(cascade = CascadeType.ALL, orphanRemoval = true, mappedBy = "invitationId")
private List<Guest> guestList;
public List<Guest> getGuestList() {
return guestList;
}
...
}
I have an overview page (list.xhtml) where all the invitations are listed and the user can pick one to edit it.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui" template="/template/layout.xhtml">
<ui:define name="content">
<h:form id="InvitationListForm">
<p:dataTable var="invitation" id="datalist"
value="#{invitationController.invitations}" resizableColumns="true"
selectionMode="single" selection="#{invitationController.selected}"
rowKey="#{invitation.invitationId}" paginator="true" rows="10"
rowsPerPageTemplate="10,30,50,100" draggableColumns="true">
<p:ajax event="rowSelect" update="createButton editButton " />
<p:ajax event="rowUnselect" update="createButton editButton " />
<p:column headerText="Name">
<h:outputText id="invitationName" value="#{invitation.name}" />
</p:column>
...
<f:facet name="footer">
<p:commandButton id="createButton" icon="ui-icon-plus"
value="#{msgs.lbl_add_new}" update=":InvitationCreateForm"
oncomplete="PF('InvitationCreateDialog').show()" />
<p:commandButton id="editButton" icon="ui-icon-pencil"
value="#{msgs.lbl_edit}" update=":InvitationEditForm"
oncomplete="PF('InvitationEditDialog').show()"
disabled="#{empty invitationController.selected}" />
</f:facet>
</p:dataTable>
</h:form>
<ui:include src="create.xhtml" />
<ui:include src="edit.xhtml" />
</ui:define>
</ui:composition>
Note that layout.xhtml doesn't contain any form (no nested forms).
The dialog edit.xhtml is divided into 2 parts: one where the user can enter the invitation "head" information and another one with a datatable where she can edit / add / delete guests.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui">
<h:head></h:head>
<body>
<ui:composition>
<h:form id="InvitationEditForm">
<p:dialog id="InvitationEditDlg" widgetVar="InvitationEditDialog"
modal="true" resizable="false" appendTo="#(body)"
header="#{msgs.lbl_add_new}">
<h:panelGroup id="display">
<p:panelGrid columns="2"
rendered="#{invitationController.selected != null}">
<p:outputLabel value="#{msgs.lbl_name}" for="name" />
<p:inputText id="name"
value="#{invitationController.selected.name}" required="true"/>
...
</p:panelGrid>
<p:dataTable var="aGuest" id="guestTable" style="width: 1200px;"
value="#{invitationController.selected.guestList}"
resizableColumns="false" rowIndexVar="idx" draggableColumns="true">
<p:column width="80" headerText="#{msgs.lbl_name}">
<p:inputText id="guestName" value="#{aGuest.name}" />
</p:column>
...
<p:column width="20">
<p:commandButton
actionListener="#{invitationController.addNewGuest}"
id="addGuestButton" update="guestTable" icon="ui-icon-plusthick"
title="+" />
<p:commandButton
actionListener="#{invitationController.deleteGuest(idx)}"
id="deleteGuestButton" update="guestTable"
icon="ui-icon-minusthick" title="-" immediate="true"
rendered="#{invitationController.selected.guestList.size()>1}" />
</p:column>
</p:dataTable>
<p:commandButton actionListener="#{invitationController.save}"
value="#{msgs.lbl_save}"
update="display,:InvitationListForm:datalist,:growl"
oncomplete="handleSubmit(args,'InvitationEditDialog');" />
<p:commandButton value="#{msgs.lbl_cancel}" immediate="true"
actionListener="#{invitationController.cancel}"
onclick="PF('InvitationEditDialog').hide()" />
</h:panelGroup>
</p:dialog>
</h:form>
</ui:composition>
</body>
</html>
And the Controller
#SessionScoped
#Named
public class InvitationController implements Serializable {
private Invitation selected; //with getter and setter
}
Now, I think my problem should be in the combination of p:dialog and h:form.
The original generated version of edit.xhtml had the form InvitationEditForm nested within the dialog and not the contrary as I posted above. The problem with that was after clicking editButton the dialog was loaded, but the dataTable was always filled with guests of the first Invitation I selected in my session (more strangely, suppose the first invitation in the session had just a guest A: after selecting an Invitation with 2 guests B and C I got A and B displayed). As the controller was returning the right guestList(), I supposed there was a problem with update and inverting form and display solved this problem..
Unfortunately this didn't solve all the problems, as now the actionListener for addGuestButton and deleteGuestButton doesn't get invoked anymore..
I am really confused: can you please help me to fix my code? Thanks in advance!
I am not able to open Dialog from my Bean. I have also tried actionListener instead of action
This is how my JSF looks like:
<ui:composition template="../templates/site.xhtml"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:sec="http://www.springframework.org/security/tags">
<!-- remove me just for encoding check ä -->
<ui:define name="content">
<h:form id="form">
<h:panelGrid columns="1" cellpadding="5">
<p:commandButton value="Button" type="button" id="myButton"
action="#{testBean.showDialog}" />
</h:panelGrid>
</h:form>
<p:dialog id="testDialog" widgetVar="testDialog2"
header="My Test Dialog" modal="true" appendToBody="true">
<h:form>
<h:outputText value="Output" />
</h:form>
</p:dialog>
</ui:define>
And this is my Bean
#Component
#Scope("view")
public class TestBean {
public void showDialog(){
RequestContext.getCurrentInstance().execute("testDialog2.show()");
}
}
Your showDialog() method is not called at all. Remove type="button" as you want to use AJAX enable submit, not push button.
I'm using a PrimeFaces DataTable to display records (randomly generated in a sandbox application). I am using the check box selection version. The basic DataTable works perfectly, including the Delete and Cancel buttons (which functionality only really is available from the confirmation dialog). I am trying to add functionality to the DataTable so that when a check box is selected, other controls on the page are enabled or disabled based on the selection.
In other words, if no rows are selected (no check boxes are checked) certain buttons and/or menu items are disabled or not rendered. Selecting one or more rows by clicking the check box should enable or render the controls. I have tried using the built in JavaScript event handlers, but I cannot make this work.
Right now my page displays a DataTable 5 columns: a check box selection column, First Name, Last Name, Age. I made something like this work in another sandbox of mine using simple boolean check boxes and updating a boolean with the onclick event. Unfortunately, there doesn't seem to be anything similar in this DataTable - or if there is I don't know how to implement it.
My index page:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.prime.com.tr/ui"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<body>
<ui:composition template="./newTemplate.xhtml">
<ui:define name="content">
<h:form>
<p:dataTable rowSelectListener="#{tableBean.onRowSelect}" var="data" value="#{tableBean.data}" paginator="true" rows="10"
selection="#{tableBean.selectedNames}">
<f:facet name="header">
Customer List
</f:facet>
<p:column selectionMode="multiple" />
<p:column headerText="Cust ID">
<h:outputText value="#{data.id}" />
</p:column>
<p:column headerText="First Name">
<h:outputText value="#{data.firstName}" />
</p:column>
<p:column headerText="Last Name">
<h:outputText value="#{data.lastName}" />
</p:column>
<p:column headerText="Age">
<h:outputText value="#{data.age}" />
</p:column>
<f:facet name="footer">
<p:commandButton update="deleteList" value="Delete" oncomplete="deleteDlg.show()" />
</f:facet>
</p:dataTable>
<p:dialog header="Delete Selected Records" modal="true" widgetVar="deleteDlg"
>
<h:outputText value="You are about to permanently delete records." /><br /><br />
<h:outputText value="Are you sure you want to continue?" /><br /><br/>
<h:commandButton value="CANCEL" action="#{tableBean.cancelDelete()}" /> <h:commandButton value="Delete" action="#{tableBean.deleteNames()}" />
</p:dialog>
</h:form>
</ui:define>
</ui:composition>
</body>
</html>
Code from my backing bean which may be relevant:
public void deleteNames()
{
for(Data person : selectedNames)
{
data.remove(person);
}
}
public void cancelDelete()
{
for(Data name : selectedNames)
selectedNames = null;
}
public void onRowSelect(SelectEvent event)
{
if(selectedNames == null || selectedNames.length < 1)
setDisable(true);
else
setDisable(false);
}
public boolean isDisable() {
if(selectedNames == null || selectedNames.length < 1)
disable = true;
else
disable = false;
return disable;
}
public void setDisable(boolean disable) {
this.disable = disable;
}
There is a workaround indeed, at least work for me.
extract the datatable.js from primefacess
modify the datatable.js selectRowWithRadio,selectRowWithRadio functions as below
PrimeFaces.widget.DataTable.prototype.selectRowWithCheckbox = function(element) {
...
...
//save state
this.writeSelections();
// added to add instant row selection
this.fireRowSelectEvent(rowId);
// end
}
Append the javascript below to end of your datatable component
<p:datatable widgetVar="wv1" id='mydatatable' ....>
...
<p:datatable/>
<script type="text/javascript">
if(!wv1_main.cfg.onRowSelectUpdate){
wv1.cfg.onRowSelectUpdate="";
}else{
wv1.cfg.onRowSelectUpdate+=" ";
}
wv1.cfg.onRowSelectUpdate+="UPDATE_IDS";
</script>
Replace 'UPDATE_IDS' with your panel ids seperated by space such as "panel1 panel2";
Replace 'wv1' with the value of data table widgetVar property
import the modified js in your jsf page where you want to use instant ajax checkbox/radia selection.
<h:header/>
...
<script type="text/javascript" src="#{CONTEXT_PATH}/resources/js/datatable.js"/>
<h:header/>
you may highligh selected rows with some more modification
Was just searching for solution to the same problem and since JSF 2 / Primefaces are evolving quite fast these days, found more up-to-date solution for Primefaces of version 3.0 or higher.
As per following answer in PrimeFaces forum thread:
http://forum.primefaces.org/viewtopic.php?f=3&t=1373&sid=bbfcd6a343edf586f927cd7ecd7d01b9&start=10#p48388
one can add client-side javascript handler to <p:datatable> component by doing following steps:
1.Add primefaces-extension JAR to your webapp's classpath (this library is also available in central Maven repo under the same name). I tried version 0.6.3 which was the latest at the time of writing, and it worked for me
2.Add pe namespace to corresponding xhtml file:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.prime.com.tr/ui"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:pe="http://primefaces.org/ui/extensions">
...
</html>
3.Add <pe:javascript> as a child element to your <p:datatable> component (can be actually added to any component which implements ClientBehaviorHolder interface) like the following:
<html>
...
<p:dataTable rowSelectListener="#{tableBean.onRowSelect}" var="data" value="#{tableBean.data}" paginator="true" rows="10" selection="#{tableBean.selectedNames}">
<pe:javascript event="rowSelect" execute="onRowSelectedHandler();"/>
...
</p:dataTable>
...
</html>
And that should be it, hope this helps...
You can catch ajax events that are fired when the row is selected.
In your case,
<p:dataTable rowSelectListener="#{tableBean.onRowSelect}"
var="data" value="#{tableBean.data}" paginator="true" rows="10"
selection="#{tableBean.selectedNames}">
<p:ajax event="rowSelectCheckbox" listener="#{tableBean.handleEvent}"
update="buttonThatNeedsToBeRendered"/>
<p:column selectionMode="multiple" />
...
</p:dataTable>
Other useful events that are fired depending on the selection mode of the dataTable are:
rowSelect and rowUnselect
rowSelectCheckbox and rowUnselectCheckbox
rowSelectRadio
toggleSelect