There was a requirement where i needed to build a list which can be filtered based on the starting alphabet. And also the List needs to remember the selections made as we move through other pages.
<apex:page controller="Pagin_alpha">
<style type="text/css">
.loadingIcon {
background-image: url(/img/loading.gif);
width: 16px;
height: 16px;
}
</style>
<script type="text/javascript">
function checkAll(cb,cbid)
{
var inputElem = document.getElementsByTagName("input");
for(var i=0; i<inputElem.length; i++)
{
if(inputElem[i].id.indexOf(cbid)!=-1){
inputElem[i].checked = cb.checked;
}
}
}
</script>
<apex:form id="form">
<br/>
<div style="align:right;">
<apex:repeat value="{!alphabet}" var="a">
<apex:commandLink value="{!a}" action="{!refreshList2}" rerender="form" style="{!if($CurrentPage.parameters.alpha=a,'font-weight:bold','')}" status="stat">
<apex:param name="alpha" value="{!a}"/>
</apex:commandLink>
|
</apex:repeat>
</div>
<br/>
<apex:pageBlock id="block">
<apex:pageBlockButtons >
<apex:commandButton rendered="{!standardsetcon.hasprevious}" value="Previous" action="{!standardsetcon.previous}" rerender="block,block2" status="stat"/>
<apex:commandButton rendered="{!standardsetcon.hasnext}" value="Next" action="{!standardsetcon.next}" rerender="block,block2" status="stat"/>
</apex:pageBlockButtons>
<apex:actionStatus id="stat">
<apex:facet name="start">
<apex:outputPanel layout="block" styleClass="message infoM4">
<apex:panelGrid columns="2" styleClass="messageTable" columnClasses="messageCell" style="padding:0px;margin:0px;">
<apex:panelGroup >
<img class="loadingIcon" src="/s.gif"/>
</apex:panelGroup>
<apex:panelGroup >
<div class="messageText">Please wait...</div>
</apex:panelGroup>
</apex:panelGrid>
</apex:outputPanel>
</apex:facet>
<apex:facet name="stop">
<apex:pageBlockTable value="{!CurrentList}" var="c" id="table">
<apex:column >
<apex:facet name="header"><apex:inputcheckbox onclick="checkAll(this,'check')" value="{!fals}" /></apex:facet>
<apex:inputcheckbox value="{!c.checked}" id="check">
</apex:inputcheckbox>
</apex:column>
<apex:column value="{!c.ocontact.name}" headerValue="Name"/>
</apex:pageBlockTable>
</apex:facet>
</apex:actionStatus>
</apex:pageBlock>
<apex:pageBlock title="Selected Contacts" id="block2">
<apex:commandButton value="Display Selected" rerender="block2"/>
<apex:pageBlockTable value="{!DisplaySelectedList}" var="c">
<apex:column value="{!c.name}" headerValue="Name"/>
<apex:column value="{!c.phone}" headerValue="Phone"/>
</apex:pageBlockTable>
</apex:pageBlock>
</apex:form>
</apex:page>
In the VF page i am displaying the List '
CurrentLsit' which would hold the contact list with checkbox which is paginated and '
DisplaySelectedList' which would remember the selected contact. Array
Alphabet is used in repeat to build the link of alphabets at the top of page
Controller method
public with sharing class Pagin_alpha {
private List<contactSet> contactSetList{get;set;}
private string contactListQuery;
private set<contact> selectedContact;
public List<string> alphabet{get;set;}
public boolean fals{get;set;}
public Pagin_alpha(){
fals=false;
alphabet=new string[]{'All','a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' };
contactSetList = new List<contactSet>();
selectedContact = new set<contact>();
contactListQuery= 'select id,name,phone from contact limit 1000';
}
Private void updateSelectedContact(){
for(contactSet cs:contactSetList ){
if(cs.checked)
selectedcontact.add(cs.ocontact);
else{
if(selectedcontact.contains(cs.ocontact))
selectedcontact.remove(cs.ocontact);
}
}
}
public ApexPages.StandardSetController standardSetCon {
get {
if(standardSetCon == null) {
standardSetCon = new ApexPages.StandardSetController(Database.getQueryLocator(contactListQuery));
// sets the number of records in each page set
standardSetCon .setPageSize(20);
}
return standardSetCon ;
}
set;
}
public List<contactSet> getCurrentList() {
updateSelectedContact();
contactSetList = new List<contactSet>();
for (contact category : (List<contact>)standardSetCon.getRecords()){
if(selectedContact.contains(category))
contactSetList.add(new contactSet(category,'true'));
else
contactSetList.add(new contactSet(category));
}
fals=false;
return contactSetList;
}
public PageReference refreshList2() {
standardSetCon = null;
string s;
if(apexpages.currentpage().getparameters().get('alpha') == 'All')
s='%';
else
s= apexpages.currentpage().getparameters().get('alpha')+'%';
contactListQuery= 'select id,name,phone from contact where name like' +'\''+s +'\''+ 'limit 5000';
return null;
}
public List<contact> getDisplaySelectedList(){
updateSelectedContact();
List<contact> displaycon = new list<contact>();
displaycon.addall(selectedcontact);
return displaycon;
}
public class contactSet {
public Boolean checked{ get; set; }
public contact ocontact { get; set;}
public contactSet(){
ocontact = new contact();
checked = false;
}
public contactSet(contact c){
ocontact = c;
checked = false;
}
public contactSet(contact c,string s){
ocontact = c;
checked = true;
}
}
}
populates the currentList in the page.
will refresh the list when the link on top of the page to filter the contact is clicked.
This concept can be extended to multiple fields in the List .
