/*!
 * Buttons helper for fancyBox
 * version: 1.0.5 (Mon, 15 Oct 2012)
 * @requires fancyBox v2.0 or later
 *
 * Usage:
 *     $(".fancybox").fancybox({
 *         helpers : {
 *             buttons: {
 *                 position : 'top'
 *             }
 *         }
 *     });
 *
 */
;(function ($) {
//Shortcut for fancyBox object
var F = $.fancybox;

//Add helper object
F.helpers.buttons = {
defaults : {
skipSingle : false, // disables if gallery contains single image
position   : 'top', // 'top' or 'bottom'
tpl        : '<div id="fancybox-buttons"><ul><li><a class="btnPrev" title="Previous" href="javascript:;"></a></li><li><a class="btnPlay" title="Start slideshow" href="javascript:;"></a></li><li><a class="btnNext" title="Next" href="javascript:;"></a></li><li><a class="btnToggle" title="Toggle size" href="javascript:;"></a></li><li><a class="btnClose" title="Close" href="javascript:;"></a></li></ul></div>'
},

list : null,
buttons: null,

beforeLoad: function (opts, obj) {
//Remove self if gallery do not have at least two items

if (opts.skipSingle && obj.group.length < 2) {
obj.helpers.buttons = false;
obj.closeBtn = true;

return;
}

//Increase top margin to give space for buttons
obj.margin[ opts.position === 'bottom' ? 2 : 0 ] += 30;
},

onPlayStart: function () {
if (this.buttons) {
this.buttons.play.attr('title', 'Pause slideshow').addClass('btnPlayOn');
}
},

onPlayEnd: function () {
if (this.buttons) {
this.buttons.play.attr('title', 'Start slideshow').removeClass('btnPlayOn');
}
},

afterShow: function (opts, obj) {
var buttons = this.buttons;

if (!buttons) {
this.list = $(opts.tpl).addClass(opts.position).appendTo('body');

buttons = {
prev   : this.list.find('.btnPrev').click( F.prev ),
next   : this.list.find('.btnNext').click( F.next ),
play   : this.list.find('.btnPlay').click( F.play ),
toggle : this.list.find('.btnToggle').click( F.toggle ),
close  : this.list.find('.btnClose').click( F.close )
}
}

//Prev
if (obj.index > 0 || obj.loop) {
buttons.prev.removeClass('btnDisabled');
} else {
buttons.prev.addClass('btnDisabled');
}

//Next / Play
if (obj.loop || obj.index < obj.group.length - 1) {
buttons.next.removeClass('btnDisabled');
buttons.play.removeClass('btnDisabled');

} else {
buttons.next.addClass('btnDisabled');
buttons.play.addClass('btnDisabled');
}

this.buttons = buttons;

this.onUpdate(opts, obj);
},

onUpdate: function (opts, obj) {
var toggle;

if (!this.buttons) {
return;
}

toggle = this.buttons.toggle.removeClass('btnDisabled btnToggleOn');

//Size toggle button
if (obj.canShrink) {
toggle.addClass('btnToggleOn');

} else if (!obj.canExpand) {
toggle.addClass('btnDisabled');
}
},

beforeClose: function () {
if (this.list) {
this.list.remove();
}

this.list    = null;
this.buttons = null;
}
};

}(jQuery));