/**
* jQuery jqGalViewII Plugin
* Examples and documentation at: http://benjaminsterling.com/jquery-jqgalviewii-photo-gallery/
*
* @author: Benjamin Sterling
* @version: 1.0
* @copyright (c) 2007 Benjamin Sterling, KenzoMedia
*
* Dual licensed under the MIT and GPL licenses:
*   http://www.opensource.org/licenses/mit-license.php
*   http://www.gnu.org/licenses/gpl.html
*   
* @requires jQuery v1.2.1 or later
* 
* 
* @name jqGalViewII
* @example $('ul').jqGalViewII();
* 
* @Semantic requirements:
* 				The structure fairly simple and should be unobtrusive, you
* 				basically only need a parent container with a list of imgs
* 
* 	<ul>
*		<li><img src="common/img/dsc_0003.thumbnail.JPG"/></li>
*		<li><img src="common/img/dsc_0012.thumbnail.JPG"/></li>
*	</ul>
*
*  -: or :-
* 
* <div>
* 		<img src="common/img/dsc_0003.thumbnail.JPG"/>
* 		<img src="common/img/dsc_0012.thumbnail.JPG"/>
* </div>
* 
* @param Integer getUrlBy
* 					By default, it is set to 0 (zero) and the plugin will
* 					get the url of the full size img from the images 
* 					parent A tag, or you can set it to 1 will and provide
* 					the fullSizePath param with the path to the full size
* 					images.  Finally, you can set it to 2 and provide text
* 					to prefix param and have that prefix removed from the
* 					src tag of the thumbnail to create the path to the
* 					full sized image
* 
* @example $('#gallery').jqGalViewII({getUrlBy:1,fullSizePath:'fullPath/to/fullsize/folder'});
* 
* @example $('#gallery').jqGalViewII({getUrlBy:2, prefix:'.tn'});
* 					".tn" gets removed from the src attribute of your image
* 
* @param String fullSizePath
* 					Set to null by default, but if you are going to set
* 					getUrlBy param to 1, you need to provide the full path
* 					to the full size image.
* 
* @example $('#gallery').jqGalViewII({getUrlBy:1,fullSizePath:'fullPath/to/fullsize/folder'});
* 
* @param String prefix
* 					Set to null by default, but if you are going to set
* 					getUrlBy param to 2, you need to provide text you
* 					want to remove from the src attribute of the thumbnail
* 					to get create the full size image name
* 
* @example $('ul').jqGalViewII({getUrlBy:2, prefix:'.tn'});
* 					".tn" gets removed from the src attribute of your image
* 
* @styleClasses
* 		gvIIContainer:  overall holder of thumbnails and gvIIHolder div, the
* 						gvIILoader div and the gvIIImgContainer div
* 		gvIIHolder: contains the thumbnails divs
*		gvIIItem: contains the thumbnail img, the gvLoaderMini div and the gvOpen div
*		gvIILoaderMini :empty but styled with a loader images as background image.
* 		gvIIImgContainer: the full size image container and the gvDescText div
* 		gvIILoader: empty but styled with a loader images as background image.
* 
* 
* changes:
*
*/
(function ($) {
    $.fn.jqGalViewII = function (options) {
        return this.each(function (i) {
            var el = this;
            el.jqthis = $(this);
            el.jqchildren = el.jqthis.find('img');
            el.opts = $.extend({}, jqGalViewII.defaults, options);
            el.index = i;
            el.totalChildren = el.jqchildren.size();
            el.jqjqviewii = jqGalViewII.swapOut(el);

            el.container = $('<div class="gvIIContainer">').appendTo(el.jqjqviewii);

            el.mainImgContainer = $('<div class="gvIIImgContainer">').appendTo(el.container);
            el.image = $('<img style="display:none;"/>').appendTo(el.mainImgContainer);
            el.loader = $('<div class="gvIILoader"/>').appendTo(el.mainImgContainer);
            el.altTextBox = $('<div class="gvIIAltText"/>').appendTo(el.mainImgContainer);
            el.holder = $('<div class="gvIIHolder"/>').appendTo(el.container);


            el.jqthis.after(el.jqjqviewii).remove();


            el.imgCw = el.mainImgContainer.width();
            el.imgCh = el.mainImgContainer.height();

            el.jqchildren.each(function (j) {
                var jqimage = $(this);
                var tmpimage = this;

                tmpimage.index = j;

                var jqdiv = $('<div id="gvIIID' + j + '" class="gvIIItem">')
				.appendTo(el.holder)
				.append('<div class="gvIILoaderMini">'); // end : $div

                if (el.opts.getUrlBy == 0) {
                    tmpimage.altImg = jqimage.parent().attr('href');
                }
                else if (el.opts.getUrlBy == 1) {
                    tmpimage.altImg = el.opts.fullSizePath + tmpimage.src.split('/').pop();
                }
                else if (el.opts.getUrlBy == 2) {
                    tmpimage.altImg = tmpimage.src.replace(el.opts.prefix, '');
                };


                this.altTxt = jqimage.attr('alt');

                var image = new Image();
                image.onload = function () {
                    image.onload = null;
                    jqdiv.empty().append(jqimage);

                    var margins = jqGalViewII.center({ "w": jqdiv.width(), "h": jqdiv.height() }, { "w": image.width, "h": image.height });

                    jqimage.css({ marginLeft: margins.l, marginTop: margins.t });
                    var largeImage = new Image();
                    largeImage.onload = function () {
                        largeImage.onload = null;

                        $('<div class="gvIIFlash">').appendTo(jqdiv).css({ opacity: ".01" })
						.mouseover(
							function () {
							    var $f = $(this);
							    $f.css({ opacity: ".75" }).stop().animate({ opacity: ".01" }, 500);
							}
						)
						.click(function () {
						    jqimage.trigger('click');
						}).trigger('mouseover');

                        jqimage.click(function () {
                            jqGalViewII.view(this, el);
                        })
						.css({ marginLeft: margins.l, marginTop: margins.t });

                        if (tmpimage.index == 0) {
                            jqimage.trigger('click');
                            jqimage.siblings().trigger('mouseover');
                        };
                    };  // end : largeImage.onload 
                    largeImage.src = tmpimage.altImg;
                }; // end : image.onload 
                image.src = tmpimage.src;
            });
        });
    };

    jqGalViewII = {
        //pDem parent deminsions
        //iDem img deminsions
        resize: function (pDem, iDem) {
            if (iDem.w > pDem.w) {
                iDem.h = iDem.h * (pDem.w / iDem.w);
                iDem.w = pDem.w;
                if (iDem.h > pDem.w) {
                    iDem.w = iDem.w * (pDem.h / iDem.h);
                    iDem.h = pDem.h;
                };
            } else if (iDem.h > pDem.h) {
                iDem.w = iDem.w * (pDem.h / iDem.h);
                iDem.h = pDem.h;
                if (iDem.w > pDem.w) {
                    iDem.h = iDem.h * (pDem.w / iDem.w);
                    iDem.w = pDem.w;
                };
            };

            return iDem;
        },
        center: function (pDem, iDem) {
            return { "l": (pDem.w - iDem.w) * .5, "t": 0 };
        },
        swapOut: function (el) {
            return $('<div id="jqgvii' + el.index + '" style="margin-bottom:10px">');
        },
        view: function (img, el) {
            if (typeof img.altImg == 'undefined') return false;
            var url = img.altImg;
            if (/picasa/.test(url)) {
                url = /\?/.test(img.altImg) ? '&imgmax=800' : '?imgmax=800';
            };

            el.loader.show();


            image = new Image();
            image.onload = function () {
                image.onload = null;
                dem = {};
                dem.w = $wOrg = image.width;
                dem.h = $hOrg = image.height;
                dem = jqGalViewII.resize({ "w": el.imgCw, "h": el.imgCh }, { "w": dem.w, "h": dem.h });

                var margins = jqGalViewII.center({ "w": el.imgCw, "h": el.imgCh }, { "w": dem.w, "h": dem.h });

                el.image.css({ width: dem.w, height: dem.h, marginLeft: margins.l, marginTop: margins.t });
                el.loader.fadeOut('fast');
                el.altTextBox.fadeTo('fast', 0.1);
                el.image.fadeOut('fast', function () {
                    el.image.attr('src', url).fadeIn();
                    if (typeof img.altTxt != 'undefined') {
                        el.altTextBox.fadeTo("fast", el.opts.titleOpacity).text(img.altTxt);
                    };
                });
                /*
                el.image.click(function(){
                var src = img.altImg;

                // thickbox execution code
					
                });
                */
            };
            image.src = url;
        },
        defaults: {
            getUrlBy: 0, // 0 == from parent A tag | 1 == the full size resides in another folder
            fullSizePath: null,
            prefix: 'thumbnail.',
            titleOpacity: .60
        }
    };
})(jQuery);