//
//
//	simpleSlide 1.6
//
//	website:http://www.simplesli.de/
//	author: David Drew
//	email:  david@ddrewdesign.com
//	
//
//	simpleSlide is a jQuery plugin that addresses the problem of lack of designer control over
//  their slideshow plugin. The philosophy was to create a plugin that would take care of the
//	mundane issues of instantiating a slideshow plugin, but make it easy for a designer to
//	manipulate the parts of the process that they would want control over, such as visual
//	treatment, integration and additional functionality.
//
//	Parameters
//	----------
//
//	simpleSlide is instantiated, at minimum, like this:
//	
//	simpleSlide();
//
//	Upon activating this function, simpleSlide goes into your DOM and finds several key
//	elements. The simpleSlide HTML structure (and key elements) will look like this:
//
//	<div class="simpleSlide-window" rel="group_name">
//		<div class="simpleSlide-tray" rel="group_name">
//			<div class="simpleSlide-slide" rel="group_name">
//				/* Individual slide content. If content is merely an image, simpleSlide will
//				 * automatically configure each slide to accommodate the slide. If you have
//				 * opted to create content that doesn't have an apparent width or height, it
//				 * it may be in your best interest to give this content a defined width and
//				 * height. You do not, however, need to define the "simpleSlide-slide" class'
//				 * width and height. The function will take care of that for you.
//				 */
//			</div>
//		</div>
//	</div>
//
//	The user may also instantiate a graphical representative element vis-a-vis the simpleSlide
//	status element. This element is entirely optional, and will or will not be placed based on the
//	user's desire to place the following elements into their HTML:
//
//	<div class="simpleSlideStatus-tray" rel="group_name">
//		<div class="simpleSlideStatus-window" rel="group_name"></div>
//	</div>
//	
//	Please visit http://www.simplesli.de and click on "features" for more configuration information.
//
//	It should be noted, however, that after simpleSlide() has processed this structure, each slide
//  will house an "alt" attribute with an integer as its value. This integer (counting up from '1')
//	represents that slide's "page" placement among the slides in the window. This is to help the
//	designer set up functionality that allows page jumping.
//
//	The buttons that control the slideshow may be used in whatever manner you wish, and anywhere
//	in the site's structure that you wish to place them. They only must have the same "rel" as
//	the window (and accompanying elements) you wish for them to control. simpleSlide() automatically
//	treats them as clickable regions. "jump-to" is special in that you also have to pass the
//	desired "jump-to" page through the "alt" attribute.
//	
//	<div class="left-button" rel="group_name"></div>
//	<div class="right-button" rel="group_name"></div>
//  <div class="jump-to" rel="group_name" alt="1"></div>
//
//	The user is also allowed several options that they may customize. They are instantiated like this:
//	
//	simpleSlide({
//		'status_width': 20,				// Integer. Sets the width of the status slideshow's window element.
//		'status_color_inside': '#000', 	// String. Sets color of status window element.
//		'status_color_outside': '#FFF', // String. Sets color of status tray element.
//		'set_speed': 500, 				// Integer. Sets speed of all animations. Represented in milliseconds.
//		'fullscreen' : 'false',			// String. 'true' sets slide window for full screen. For obvious reasons, cannot
//										   work with more than one simpleSlide window per page.
//		'swipe' : 'false', 				// String. 'true' turns on swipe functionality for touch devices.
//		'callback': 'function()'		// String. Sets callback to actuate after simpleSlide initial config.
//	});
//
//	If you have any further questions on the usage of simpleSlide, or suggestions on making it better,
//	please e-mail me at david@ddrewdesign.com, or visit http://www.ddrewdesign.com/contact/ to email me.
//	Thank you for using this plugin, and I hope you enjoy it. I had a blast making it.
//
// 

function simpleSlide(incoming_options) {
    jQuery(function($) {
        var options = {
            'status_width': 20,
            'status_color_inside': '#fff',
            'status_color_outside': '#aaa',
            'set_speed': 500,
            'fullscreen': 'false',
            'swipe': 'false',
            'callback': 'function()'
        };

        $.extend(options, incoming_options);

        $.ss_options = options;

        $('.simpleSlide-slide').css('opacity', '0');

        $('.simpleSlide-tray').css('margin', '0');

        $('.simpleSlide-window').prepend('<span id="ssLoading" style="color: #808080;font-family:Helvetica, Arial, sans-serif;font-size: 12px; margin: 10px 0 0 10px;display: block">Loading slides...</span>');

        var no_of_images = $('.simpleSlide-slide img').size();

        if (no_of_images > 0) {

            var images = new Array();
            var i = 0;
            $('.simpleSlide-slide img').each(function() {
                images[i] = $(this).attr('src');
                i++;
            });

            i = 0;

            $(images).each(function() {
                var imageObj = new Image();
                imageObj.src = images[i];

                if (imageObj.complete) {
                    no_of_images--;
                    i++;
                    if (no_of_images == 0) {
                        ssInit();
                    };
                } else {
                    $(imageObj).load(function() {
                        no_of_images--;
                        i++;
                        if (no_of_images == 0) {
                            ssInit();
                        };
                    });
                };
            });
        } else {
            ssInit();
        };
    });
};

function ssInit() {
    /* Set the dimensions of each simpleSlide window and tray
    * based on the size of the first 'slide' inside that window.
    * Every slide within a given tray/window should be uniform in dimensions.
    * Also, set Status Window size, if it's being used. Fire callback when finished.
    */

    jQuery(function($) {
        $('.simpleSlide-window').each(function() {
            if ($.ss_options.fullscreen == 'true') {
                $('body').css('overflow', 'hidden');
            }
            var window_contents = $(this).html();
            var cleaned_contents = removeWhiteSpace(window_contents);
            $(this).html(cleaned_contents);

            var slide_count = $(this).find('.simpleSlide-slide').size();
            $(this).find('.simpleSlide-slide').css('display', 'block');
            var window_height = $(this).find('.simpleSlide-slide').first().outerHeight();

            if ($.ss_options.fullscreen == 'true') {
                fullScreen(this);
            };

            $(this).find('.simpleSlide-slide').css({
                'display': 'inline',
                'float': 'left'
            });

            var window_width = $(this).find('.simpleSlide-slide').first().outerWidth();

            var window_rel = $(this).attr('rel');

            if ($.ss_options.fullscreen == 'false') {
                $(this).css({
                    'height': window_height,
                    'width': window_width,
                    'position': 'relative'
                });
            };

            $(this).css('overflow', 'hidden');

            setTraySize(this, slide_count, window_width);

            setSimpleSlideStatus(window_rel, window_height, window_width, slide_count);

            setPaging(this);

            $(this).find('#ssLoading').remove();

            if ($.ss_options.swipe == 'true' && !$.browser.msie) {
                simpleSwipe(this);
            };

            $(this).find('.simpleSlide-slide').animate({
                'opacity': '1'
            }, 300, "swing");

        });

        /* Fire callback after completion of image load and simpleSlide initialization */
        if (typeof ($.ss_options.callback) == 'function') {
            $.ss_options.callback.call(this);
        };

        /* Gives each slide an 'alt' with the slide number */
        function setPaging(this_window) {
            var page_count = 1;

            $(this_window).find('.simpleSlide-slide').each(function() {
                $(this).attr('alt', page_count);
                page_count++;
            });
        };

        function fullScreen(this_s_window) {
            var base_img = new Image();
            base_img.src = $(this_s_window).find('img').first().attr('src');
            /*var rendered_img = $(this_s_window).find('img').first();*/
            var window_prop = $(window).width() / $(window).height();
            var image_prop = base_img.width / base_img.height;
            var wh = $(window).height();
            var ww = $(window).width();

            if (window_prop > image_prop) {
                var new_height = (ww / base_img.width) * base_img.height;
                var height_offset = (new_height - wh) / 2;
                $(this_s_window).find('img').attr('width', ww).attr('height', new_height).css('marginLeft', 0);
                $(this_s_window).css({
                    'marginLeft': 0, 							/* Reset to beginning */
                    'marginTop': '-' + height_offset + 'px',
                    'height': wh + height_offset
                });
                $(this_s_window).find('.simpleSlide-slide').css({
                    'width': ww,
                    'height': new_height,
                    'overflow': 'hidden'
                });
            } else {
                var new_width = (wh / base_img.height) * base_img.width;
                var width_offset = (new_width - ww) / 2;
                $(this_s_window).find('img').attr('height', wh).attr('width', new_width);
                $(this_s_window).find('img').css({
                    'marginLeft': '-' + width_offset + 'px'
                });
                $(this_s_window).find('.simpleSlide-slide').css({
                    'width': ww,
                    'height': wh,
                    'overflow': 'hidden'
                });

                /* Reset from other orientation */
                $(this_s_window).css({
                    'marginTop': 0,
                    'height': wh
                });
            };

            $(this_s_window).find('.simpleSlide-tray').css('marginLeft', 0);
        };

        /* Sets size of the "tray" that holds the "slides" */
        function setTraySize(slideWindow, count, viewer_width) {

            var slider_width = count * viewer_width;

            $(slideWindow).find('.simpleSlide-tray').css({
                'width': slider_width + 'px'
            });

            $(slideWindow).find('.simpleSlide-slide').css('display', 'inline-block');

        };

        /* If user chooses to establish Status Window, this function will set
        * the dimensions of the window based on the desired width.
        * The window (and its inherent slide's) dimensions are a relative factor
        * of the main window's size, so the status window will be proportionally
        * the same as the main window and its tray.
        */
        function setSimpleSlideStatus(this_rel, height, width, image_count) {

            var ratio = $.ss_options.status_width / width;
            var status_height = ratio * height;

            $('.simpleSlideStatus-tray[rel="' + this_rel + '"]')
				.css({
				    'width': $.ss_options.status_width * image_count,
				    'height': status_height,
				    'background-color': $.ss_options.status_color_outside
				});

            $('.simpleSlideStatus-window[rel="' + this_rel + '"]')
				.css({
				    'width': $.ss_options.status_width,
				    'height': status_height,
				    'background-color': $.ss_options.status_color_inside
				});

            if (jQuery.support.opacity) {
                $('.simpleSlideStatus-window .simpleSlideStatus-tray[rel="' + this_rel + '"]')
				   .css({
				       'opacity': '.5',
				       'background-color': $.ss_options.status_color_inside
				   });
            };

            if (!jQuery.support.opacity) {
                $('.simpleSlideStatus-window .simpleSlideStatus-tray[rel="' + this_rel + '"]').css({
                    'filter': 'alpha(opacity=50)',
                    'background-color': $.ss_options.status_color_inside
                });
            };
        };

        /* Actuates upon the clicking of a left- or right-button classed element */
        $('.left-button, .right-button, .jump-to').live('click', function() {

            var rel = $(this).attr('rel');

            if (!$('div.simpleSlide-tray[rel="' + rel + '"]').is(':animated')) {
                simpleSlideAction(this, rel);
            };
        });
    });
};

function simpleSwipe(this_window) {
    // Default thresholds & swipe functions
    var defaults = {
        threshold: {
            x: $(this_window).width() * .15,
            y: $(this_window).height() * .1
        },
        swipeLeft: function() {
            simpleSlideAction('.right-button', $(this_window).attr('rel'));
        },
        swipeRight: function() {
            simpleSlideAction('.left-button', $(this_window).attr('rel'));
        },
        preventDefaultEvents: true
    };

    var options = $.extend(defaults, options);

    if (!this_window) return false;

    return $(this_window).each(function() {

        var me = $(this_window);

        // Private variables for each element
        var originalCoord = { x: 0, y: 0 };
        var finalCoord = { x: 0, y: 0 };

        // Screen touched, store the original coordinate
        function touchStart(event) {
            originalCoord.x = event.targetTouches[0].pageX;
            originalCoord.y = event.targetTouches[0].pageY;
        };

        // Store coordinates as finger is swiping
        function touchMove(event) {
            if (defaults.preventDefaultEvents) {
                event.preventDefault();
            };
            finalCoord.x = event.targetTouches[0].pageX; // Updated X,Y coordinates
            finalCoord.y = event.targetTouches[0].pageY;
        };

        // Done Swiping
        // Swipe should only be on X axis, ignore if swipe on Y axis
        // Calculate if the swipe was left or right
        function touchEnd(event) {
            var changeY = originalCoord.y - finalCoord.y;
            if (changeY < defaults.threshold.y && changeY > (defaults.threshold.y * -1)) {
                changeX = originalCoord.x - finalCoord.x;

                if (changeX > defaults.threshold.x) {
                    defaults.swipeLeft();
                };
                if (changeX < (defaults.threshold.x * -1)) {
                    defaults.swipeRight();
                };
            };
        };

        // Swipe was canceled
        function touchCancel(event) {
            console.log('Canceling swipe gesture...');
        };

        // Add gestures to all swipable areas
        this_window.addEventListener("touchstart", touchStart, false);
        this_window.addEventListener("touchmove", touchMove, false);
        this_window.addEventListener("touchend", touchEnd, false);
        this_window.addEventListener("touchcancel", touchCancel, false);

    });
};

function simpleSlideAction(action, rel_no) {
    jQuery(function($) {
        var move_speed = $.ss_options.set_speed;
        var image_count = $('.simpleSlide-window[rel="' + rel_no + '"]').find('.simpleSlide-slide').size();
        var window_width = $('.simpleSlide-window[rel="' + rel_no + '"]').innerWidth();
        var status_window_width = $('.simpleSlideStatus-window[rel="' + rel_no + '"]').innerWidth();
        var status_tray_width = status_window_width * image_count;
        var current_tray_margin = parseInt($('.simpleSlide-tray[rel="' + rel_no + '"]').css('marginLeft'), 10);
        var current_status_window_margin = parseInt($('.simpleSlideStatus-tray .simpleSlideStatus-window[rel="' + rel_no + '"]').css('marginLeft'), 10);
        var current_status_tray_margin = parseInt($('.simpleSlideStatus-window .simpleSlideStatus-tray[rel="' + rel_no + '"]').css('marginLeft'), 10);

        if ($(action).is('.jump-to')) {
            var to_page = $(action).attr('alt');
            var j_margin = (to_page - 1) * (window_width * (-1));
            var st_margin = (to_page - 1) * (status_window_width * (-1));
            var sw_margin = (to_page - 1) * (status_window_width);

            move(j_margin, sw_margin, st_margin);
        };

        if ($(action).is('.left-button')) {
            if (current_tray_margin == 0) {
                var j_margin = current_tray_margin - ((image_count - 1) * window_width);
                var st_margin = current_status_tray_margin - ((image_count - 1) * status_window_width);
                var sw_margin = current_status_window_margin + ((image_count - 1) * status_window_width);
            } else {
                var j_margin = current_tray_margin + window_width;
                var st_margin = current_status_tray_margin + status_window_width;
                var sw_margin = current_status_window_margin - status_window_width;
            };

            move(j_margin, sw_margin, st_margin);
        };

        if ($(action).is('.right-button')) {
            if (current_tray_margin == (image_count - 1) * (window_width * -1)) {
                var j_margin = 0;
                var st_margin = 0;
                var sw_margin = 0;
            } else {
                var j_margin = current_tray_margin - window_width;
                var st_margin = current_status_tray_margin - status_window_width;
                var sw_margin = current_status_window_margin + status_window_width;
            };

            move(j_margin, sw_margin, st_margin);
        };

        function move(new_margin, new_swindow_margin, new_stray_margin) {
            $('.simpleSlide-tray[rel="' + rel_no + '"]').animate({
                'marginLeft': new_margin
            }, move_speed, "swing");

            $('.simpleSlideStatus-window .simpleSlideStatus-tray[rel="' + rel_no + '"]')
				.animate({
				    'marginLeft': new_stray_margin
				}, move_speed, "swing");

            $('.simpleSlideStatus-tray .simpleSlideStatus-window[rel="' + rel_no + '"]').animate({
                'marginLeft': new_swindow_margin
            }, move_speed, "swing");
        };
    });
};

function removeWhiteSpace(raw) {
    var cleaned_string = raw.replace(/[\r+\n+\t+]\s\s+/g, "");
    return cleaned_string;
};