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Remote Objects Infinite Scroll
public with sharing class ContactsController {
@RemoteAction
public static Map<String, Object> retrieveContacts(String type, List<String> fields, Map<String, Object> criteria) {
// Retrieve using the standard retrieve
Map<String, Object> result = RemoteObjectController.retrieve(type, fields, criteria);
// Add in the total record count for the current user.
// This is needed to know when to stop scrolling.
Integer totalContacts = [
SELECT Count()
FROM Contact
WHERE OwnerId =: UserInfo.getUserId()
];
// Create a new map since the result map is read-only
Map<String, Object> customResult =
new Map<String, Object> {'totalContacts'=> totalContacts};
customResult.putAll(result);
return customResult;
}
}
<apex:page controller="ContactsController">
<apex:includeScript value="{!URLFOR($Resource.jquery, 'jquery-1.11.1.min.js')}"/>
<!-- css generated from http://tablestyler.com/ -->
<apex:stylesheet value="{!URLFOR($Resource.table, 'table.css')}"/>
<apex:remoteObjects >
<apex:remoteObjectModel jsShortHand="con" name="Contact" fields="Id,Name,Email,Phone,MobilePhone,Image_URL__c"
retrieve="{!$RemoteAction.ContactsController.retrieveContacts}"/>
</apex:remoteObjects>
<script>
var $j = jQuery.noConflict();
var offsetVal = 0;
var limitVal = 5;
var totalContacts = limitVal;
var rowCount = 1;
var scrollListener = function() {
$j(window).one("scroll", function() {
if ($j(window).scrollTop() >= $j(document).height() - $j(window).height() - 100) {
if (offsetVal < totalContacts) {
loadRecords();
}
}
setTimeout(scrollListener, 200);
});
};
$j(document).ready(function() {
loadRecords();
scrollListener();
});
function loadRecords() {
var criteria = {
limit: limitVal,
orderby: [ {Name: "ASC"} ],
};
// offsetVal must be at least 1
if (offsetVal >= 1) {
criteria.offset = offsetVal;
}
var con = new SObjectModel.con();
con.retrieve(criteria, function(err, records, event) {
if (err) {
alert(err);
} else {
offsetVal += records.length;
totalContacts = event.result.totalContacts;
records.forEach(function(record) {
addTableRow(record);
});
}
});
}
function addTableRow(record) {
var cssClass = "";
if ( (rowCount % 2) == 0 ) {
cssClass = "alt";
}
$j("#contacts tbody:last").append(
"<tr class='" + cssClass + "'>" +
"<td><img src='" + record.get("Image_URL__c") + "' /></td>" +
"<td><a href='/" + record.get("Id") + "' target='_blank'>" + record.get("Name") + "</a></td>" +
"<td>" + record.get("Email") + "</td>" +
"<td>" + record.get("MobilePhone") + "</td>" +
"<td>" + record.get("Phone") + "</td>" +
"</tr>"
);
rowCount++;
}
</script>
<div class="datagrid">
<table id="contacts">
<thead>
<tr>
<th>Image</th> <th>Name</th> <th>Email</th> <th>Home Phone</th> <th>Mobile Phone</th>
</tr>
</thead>
<tbody> </tbody>
</table>
</div>
</apex:page>
/* From http://tablestyler.com/ */
.datagrid table {
border-collapse: collapse;
text-align: left;
width: 100%;
}
.datagrid {
font: normal 12px/150% Arial, Helvetica, sans-serif;
background: #fff;
overflow: hidden;
border: 1px solid #006699;
-webkit-border-radius: 3px;
-moz-border-radius: 3px;
border-radius: 3px;
}
.datagrid table td, .datagrid table th {
padding: 3px 10px;
}
.datagrid table thead th {
background: -webkit-gradient( linear, left top, left bottom, color-stop(0.05, #006699), color-stop(1, #00557F) );
background: -moz-linear-gradient( center top, #006699 5%, #00557F 100% );
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#006699', endColorstr='#00557F');
background-color: #006699;
color: #FFFFFF;
font-size: 15px;
font-weight: bold;
border-left: 1px solid #0070A8;
}
.datagrid table thead th:first-child {
border: none;
}
.datagrid table tbody td {
color: #00496B;
border-left: 1px solid #E1EEF4;
font-size: 12px;
font-weight: normal;
}
.datagrid table tbody .alt td {
background: #E1EEF4;
color: #00496B;
}
.datagrid table tbody td:first-child {
border-left: none;
}
.datagrid table tbody tr:last-child td {
border-bottom: none;
}
.datagrid table tbody tr td:first-child {
text-align: center;
}
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