/// 
//<reference path="http://localhost:42042/Scripts/jquery-1.4.4-vsdoc.js" />

/*
* jQuery-busy v1.0.3
* Copyright 2010 Tomasz Szymczyszyn
*
* Examples available at:
* http://kammerer.boo.pl/code/jquery-busy
*
* This plug-in is dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*/
(function ($) {
    // Helper object factory 
    function Busy(options) {
        this.options = $.extend({}, Busy.defaults, options);
    };

    // Remembers currently "busied" targets along with options
    Busy.instances = [];

    Busy.repositionAll = function () {
        for (var i = 0; i < Busy.instances.length; i++) {
            if (!Busy.instances[i])
                continue;

            var options = Busy.instances[i].options;
            new Busy(options).positionImg($(Busy.instances[i].target), $.data(Busy.instances[i].target, "busy"), options.position);
        }
    };

    Busy.prototype.hide = function (targets) {
        targets.each(function () {
            var busyImg = $.data(this, "busy");
            if (busyImg)
                busyImg.remove();

            $(this).css("visibility", "");
            //$(this).css("display", "block");

            $.data(this, "busy", null);
            for (var i = 0; i < Busy.instances.length; i++)
                if (Busy.instances[i] != null && Busy.instances[i].target == this)
                    Busy.instances[i] = null;
        });
    };

    Busy.prototype.show = function (targets) {
        var that = this;

        targets.each(function () {
            if ($.data(this, "busy"))
                return;

            var target = $(this);

            var busyImg = that.buildImg();
            //busyImg.css("display", "none");
            busyImg.css("visibility", "hidden");
            busyImg.load(function () {
                that.positionImg(target, busyImg, that.options.position);
                busyImg.css("visibility", "");
                //busyImg.css("display", "block");
            });

            $("body").append(busyImg);

            if (that.options.hide)
                target.css("visibility", "hidden");
                //target.css("display", "none");

            $.data(this, "busy", busyImg);
            Busy.instances.push({ target: this, options: that.options });
        });
    };

    Busy.prototype.preload = function () {
        var busyImg = this.buildImg();
        busyImg.css("visibility", "hidden");
        //busyImg.css("display", "none");
        busyImg.load(function () {
            $(this).remove();
        });

        $("body").append(busyImg);
    };

    // Creates image node, wraps it in $ object and returns.
    Busy.prototype.buildImg = function () {
        var html = "<img src='" + this.options.img + "' alt='" + this.options.alt + "' title='" + this.options.title + "'";

        if (this.options.width)
            html += " width='" + this.options.width + "'";

        if (this.options.height)
            html += " height='" + this.options.height + "'";

        html += " />";

        return $(html);
    };

    Busy.prototype.positionImg = function (target, busyImg, position) {
        var targetPosition = target.offset();
        var targetWidth = target.outerWidth();
        var targetHeight = target.outerHeight();

        var busyWidth = busyImg.outerWidth();
        var busyHeight = busyImg.outerHeight();

        if (position == "left") {
            var busyLeft = targetPosition.left - busyWidth - this.options.offset;
        }
        else if (position == "right") {
            var busyLeft = targetPosition.left + targetWidth + this.options.offset;
        }
        else {
            var busyLeft = targetPosition.left + (targetWidth - busyWidth) / 2.0;
        }

        var busyTop = targetPosition.top + (targetHeight - busyHeight) / 2.0;

        busyImg.css("position", "absolute");
        busyImg.css("left", busyLeft + "px");
        busyImg.css("top", busyTop + "px");
    };

    Busy.defaults = {
        img: '../../Content/images/busy_Big.gif',
        alt: 'Please wait...',
        title: 'Please wait...',
        hide: true,
        position: 'center',
        zIndex: 1001,
        width: null,
        height: null,
        offset: 10
    };

    $.fn.busy = function (options, defaults) {
        if ($.inArray(options, ["clear", "hide", "remove"]) != -1) {
            // Hide busy image(s)
            new Busy(options).hide($(this));
        }
        else if (options == "defaults") {
            // Overwrite defaults
            $.extend(Busy.defaults, defaults || {});
        }
        else if (options == "preload") {
            // Preload busy image
            new Busy(options).preload();
        }
        else if (options == "reposition") {
            // Update positions of all existing busy images
            Busy.repositionAll();
        }
        else {
            // Show busy image(s)
            new Busy(options).show($(this));
            return $(this);
        }
    };
})(jQuery);

$(function () {
    jQuery().busy("defaults", { img: '../../Content/images/busy_Big.gif' }); 
});