(function ($) {
$.fn.lazyLoad = function (options, ext) {
if (options == ‘stop’) {
var settings = this.data(‘lazyLoadSettings’);
if (settings) {
settings.stopped = true;
}
return;
}
if (options == ‘reload’) {
var settings = this.data(‘lazyLoadSettings’);
if (settings) {
settings.stopped = false;
settings.loading = false;
this.get(0).onscroll = null;
this.lazyLoad(settings);
}
return;
}
if (options == ‘sleep’) {
var settings = this.data(‘lazyLoadSettings’);
if (settings) {
settings.loading = true;
}
return;
}
if (options == ‘wake’) {
var settings = this.data(‘lazyLoadSettings’);
if (settings) {
settings.loading = false;
}
return;
}
if (options == ‘force’) {
var settings = this.data(‘lazyLoadSettings’);
if (settings) {
if (!settings.loading) {
settings.load();
}
}
return;
}
this.data(‘lazyLoadSettings’, $.extend({distance: 50,
load: function () {
},
container: container,
state: ‘wake’,
hash: location.hash.replace(/^[^#]*#\/*/, »).split(‘/’)[0] || null,
distanceBetweenBottoms: null
}, options || {}));
var settings = this.data(‘lazyLoadSettings’);
settings.loading = false;
settings.stopped = false;
var win = $(window);
var container = settings.container || $(this);
init();
function init() {
if (settings.hash !== null) {
if (!$.isArray(settings.hash)) {
settings.hash = [settings.hash];
}
}
$.fn.lazyLoad.call(win, settings.state);
initHandler();
}
function scrollHandler() {
if (settings.stopped) {
this.onscroll = null;
return;
}
if (!settings.stopped && !settings.loading && distanceBetweenBottoms(container, win) <= settings.distance) {
if (settings.hash !== null) {
var loc_hash = location.hash.replace(/^[^#]*#\/*/, '').split('/')[0];
if (settings.hash.indexOf(loc_hash) === -1) {
this.onscroll = null;
return;
}
}
settings.load();
}
}
function initHandler() {
var interval = 350;
var timerId = setTimeout(function () {
if (settings.stopped) {
clearTimeout(timerId);
return;
}
if (settings.hash !== null) {
var loc_hash = location.hash.replace(/^[^#]*#\/*/, '').split('/')[0];
if (settings.hash.indexOf(loc_hash) === -1) {
clearTimeout(timerId);
return;
}
}
if (!settings.loading) {
var r = distanceBetweenBottoms(container, win);
if (distanceBetweenBottoms(container, win) <= settings.distance) {
settings.load();
timerId = setTimeout(arguments.callee, interval);
} else {
win.get(0).onscroll = scrollHandler;
clearTimeout(timerId);
}
} else {
timerId = setTimeout(arguments.callee, interval);
}
}, interval);
}
var distanceBetweenBottoms = typeof settings.distanceBetweenBottoms === 'function' ? settings.distanceBetweenBottoms : function (container, win, offset) {
container = typeof container === 'string' ? $(container) : container;
offset = offset || 0;
return (container.position().top + container.outerHeight() - offset) - (win.scrollTop() + win.height());
};
};
})(jQuery);
