Current File : /home/caballoscriollos/www/espanol/carousel/examples/bestpractice/jcarousel.js
function jcarousel_itemLoadCallback(carousel, state)
{
// Fetch the visible range first (should be already preloaded)
jcarousel_itemFetchCallback(carousel, carousel.first, carousel.last);
var visible = carousel.last - carousel.first + 1;
// ---
var first = carousel.last + 1;
var last = first + visible - 1;
var first2 = last + 1;
var last2 = first2 + visible - 1;
jcarousel_itemFetchCallback(carousel, first, last, first2, last2);
// ---
var last = carousel.first - 1;
var first = last - visible + 1;
var last2 = first - 1;
var first2 = last2 - visible + 1;
jcarousel_itemFetchCallback(carousel, first, last, first2, last2);
};
function jcarousel_itemFetchCallback(carousel, first, last, first2, last2)
{
// Remove items to avoid big lists
jcarousel_itemRemoveCallback(carousel, first2, last2);
if (first < 1)
first = 1;
// Check if "first" is out of range if the size was already set
var size = carousel.size();
if (carousel.options.wrap != 'circular' && size && first > size)
return;
jcarousel_itemQueryCallback(carousel, first, last);
};
function jcarousel_itemQueryCallback(carousel, first, last, realFirst)
{
// Check if the requested items already exist
if (carousel.has(first, last))
return;
jQuery.get(
'jcarousel_ajax.php',
{
first: first,
last: last
},
function(xml) {
jcarousel_itemAddCallback(carousel, first, last, xml);
},
'xml'
);
};
function jcarousel_itemAddCallback(carousel, first, last, xml)
{
var items = jQuery('item', xml);
// Set the size of the carousel
if (items.length < (last - first + 1))
carousel.size(first + items.length - 1);
items.each(function(i) {
carousel.add(first + i, jcarousel_getItemHTML(this));
});
};
function jcarousel_itemRemoveCallback(carousel, first, last)
{
if (!first || !last)
return;
for (var i = first; i <= last; i++)
carousel.remove(i);
};
/**
* Item html creation helper.
*/
function jcarousel_getItemHTML(item)
{
return '<img src="' + jQuery('src', item).text() + '" width="75" height="75" alt="' + jQuery('title', item).text() + '" />';
};
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