/*

GalleryView - jQuery Content Gallery Plugin
Author: 		Jack Anderson
Version:		1.1 (April 5, 2009)
Documentation: 	http://www.spaceforaname.com/jquery/galleryview/
	
Please use this development script if you intend to make changes to the
plugin code.  For production sites, please use jquery.galleryview-1.0.1-pack.js.
	
*/
(function($) {
    $.fn.galleryView = function(options) {
        var opts = $.extend($.fn.galleryView.defaults, options);

        var id;
        var iterator = 0;
        var gallery_width;
        var gallery_height;
        var frame_margin = 10;
        var strip_width;
        var wrapper_width;
        var item_count = 0;
        var slide_method;
        var img_path;
        var paused = false;
        var frame_caption_size = 20;
        var frame_margin_top = 5;
        var pointer_width = 2;

        //Define jQuery objects for reuse
        var j_gallery;
        var j_filmstrip;
        var j_frames;
        var j_panels;
        var j_pointer;

        /************************************************/
        /*	Plugin Methods								*/
        /************************************************/
        function showItem(i) {
            //Disable next/prev buttons until transition is complete
            $('img.nav-next').unbind('click');
            $('img.nav-prev').unbind('click');
            j_frames.unbind('click');

            if (has_panels) {
                if (opts.fade_panels) {
                    //Fade out all panels and fade in target panel
                    j_panels.fadeOut(opts.transition_speed).eq(i % item_count).fadeIn(opts.transition_speed, function() {

                        if (!has_filmstrip) {
                            $('img.nav-prev').click(showNextItem);
                            $('img.nav-next').click(showPrevItem);
                        }
                    });
                }
            }

            if (has_filmstrip) {
                //Slide either pointer or filmstrip, depending on transition method
                if (slide_method == 'strip') {
                    //Stop filmstrip if it's currently in motion
                    j_filmstrip.stop();

                    //Determine distance between pointer (eventual destination) and target frame
                    var distance = getPos(j_frames[i]).left - (getPos(j_pointer[0]).left + 2);
                    var leftstr = (distance >= 0 ? '-=' : '+=') + Math.abs(distance) + 'px';

                    //Animate filmstrip and slide target frame under pointer
                    //If target frame is a duplicate, jump back to 'original' frame
                    j_filmstrip.animate({
                        'left': leftstr
                    }, opts.transition_speed, opts.easing, function() {
                        //Always ensure that there are a sufficient number of hidden frames on either
                        //side of the filmstrip to avoid empty frames
                        if (i > item_count) {
                            i = i % item_count;
                            iterator = i;
                            j_filmstrip.css('left', '-' + ((opts.frame_width + frame_margin) * i) + 'px');
                        } else if (i <= (item_count - strip_size)) {
                            i = (i % item_count) + item_count;
                            iterator = i;
                            j_filmstrip.css('left', '-' + ((opts.frame_width + frame_margin) * i) + 'px');
                        }

                        if (!opts.fade_panels) {
                            j_panels.hide().eq(i % item_count).show();
                        }
                        $('img.nav-prev').click(showNextItem);
                        $('img.nav-next').click(showPrevItem);
                        enableFrameClicking();
                    });
                } else if (slide_method == 'pointer') {
                    //Stop pointer if it's currently in motion
                    j_pointer.stop();
                    //Get position of target frame
                    var pos = getPos(j_frames[i]);
                    //Slide the pointer over the target frame
                    j_pointer.animate({
                        'left': (pos.left - 2 + 'px')
                    }, opts.transition_speed, opts.easing, function() {
                        if (!opts.fade_panels) {
                            j_panels.hide().eq(i % item_count).show();
                        }
                        $('img.nav-prev').click(showNextItem);
                        $('img.nav-next').click(showPrevItem);
                        enableFrameClicking();
                    });
                }

                if ($('a', j_frames[i])[0]) {
                    j_pointer.unbind('click').click(function() {
                        var a = $('a', j_frames[i]).eq(0);
                        if (a.attr('target') == '_blank') { window.open(a.attr('href')); }
                        else { location.href = a.attr('href'); }
                    });
                }
            }
        };
        function showNextItem() {
            $(document).stopTime("transition");
            if (++iterator == j_frames.length) { iterator = 0; }
            showItem(iterator);
            $(document).everyTime(opts.transition_interval, "transition", function() {
                showNextItem();
            });
        };
        function showPrevItem() {
            $(document).stopTime("transition");
            if (--iterator < 0) { iterator = item_count - 1; }
            //alert(iterator);
            showItem(iterator);
            $(document).everyTime(opts.transition_interval, "transition", function() {
                showNextItem();
            });
        };
        function getPos(el) {
            var left = 0, top = 0;
            var el_id = el.id;
            if (el.offsetParent) {
                do {
                    left += el.offsetLeft;
                    top += el.offsetTop;
                } while (el = el.offsetParent);
            }
            //If we want the position of the gallery itself, return it
            if (el_id == id) { return { 'left': left, 'top': top }; }
            //Otherwise, get position of element relative to gallery
            else {
                var gPos = getPos(j_gallery[0]);
                var gLeft = gPos.left;
                var gTop = gPos.top;

                return { 'left': left - gLeft, 'top': top - gTop };
            }
        };
        function enableFrameClicking() {
            j_frames.each(function(i) {
                //If there isn't a link in this frame, set up frame to slide on click
                //Frames with links will handle themselves
                if ($('a', this).length == 0) {
                    $(this).click(function() {
                        $(document).stopTime("transition");
                        showItem(i);
                        iterator = i;
                        $(document).everyTime(opts.transition_interval, "transition", function() {
                            showNextItem();
                        });
                    });
                }
            });
        };

        function buildPanels() {
            //If there are panel captions, add overlay divs
            if ($('.panel-overlay').length > 0) { j_panels.append('<div class="overlay"></div>'); }


            //			if(!has_filmstrip) {
            //				//Add navigation buttons
            //				$('<img />').addClass('nav-next').attr('src',img_path+opts.nav_theme+'/next.png').appendTo(j_gallery).css({
            //					'position':'absolute',
            //					'zIndex':'1100',
            //					'cursor':'pointer',
            //					//'top':((opts.panel_height-22)/2)+'px',
            //					//'right':'10px',
            //					'display':'none'
            //				}).click(showNextItem);
            //				$('<img />').addClass('nav-prev').attr('src',img_path+opts.nav_theme+'/prev.png').appendTo(j_gallery).css({
            //					'position':'absolute',
            //					'zIndex':'1100',
            //					'cursor':'pointer',
            //					//'top':((opts.panel_height-22)/2)+'px',
            //					//'left':'10px',
            //					'display':'none'
            //				}).click(showPrevItem);
            //				
            //				$('<img />').addClass('nav-overlay').attr('src',img_path+opts.nav_theme+'/panel-nav-next.png').appendTo(j_gallery).css({
            //					'position':'absolute',
            //					'zIndex':'1099',
            //					//'top':((opts.panel_height-22)/2)-10+'px',
            //					//'right':'0',
            //					'display':'none'
            //				});
            //				
            //				$('<img />').addClass('nav-overlay').attr('src',img_path+opts.nav_theme+'/panel-nav-prev.png').appendTo(j_gallery).css({
            //					'position':'absolute',
            //					'zIndex':'1099',
            //					'top':((opts.panel_height-22)/2)-10+'px',
            //					'left':'0',
            //					'display':'none'
            //				});
            //			}
            //			j_panels.css({
            //				'width':(opts.panel_width-parseInt(j_panels.css('paddingLeft').split('px')[0],10)-parseInt(j_panels.css('paddingRight').split('px')[0],10))+'px',
            //				'height':(opts.panel_height-parseInt(j_panels.css('paddingTop').split('px')[0],10)-parseInt(j_panels.css('paddingBottom').split('px')[0],10))+'px',
            //				'position':'absolute',
            //				'top':(opts.filmstrip_position=='top'?(opts.frame_height+frame_margin_top+(opts.show_captions?frame_caption_size:frame_margin_top))+'px':'0px'),
            //				'left':'0px',
            //				'overflow':'hidden',
            //				'background':'white',
            //				'display':'none'
            //			});
            //			$('.panel-overlay',j_panels).css({
            //				'position':'absolute',
            //				'zIndex':'999',
            //				//'width':(opts.panel_width-20)+'px',
            //				//'height':opts.overlay_height+'px',
            //				//'top':(opts.overlay_position=='top'?'0':opts.panel_height-opts.overlay_height+'px'),
            //				'left':'0',
            //				'padding':'0 10px',
            //				'color':opts.overlay_text_color,
            //				'fontSize':opts.overlay_font_size
            //			});
            //			$('.panel-overlay a',j_panels).css({
            //				'color':opts.overlay_text_color,
            //				'textDecoration':'underline',
            //				'fontWeight':'bold'
            //			});
            $('.overlay', j_panels).css({
                'position': 'absolute',
                'zIndex': '998',
                //'width':opts.panel_width+'px',
                //'height':opts.overlay_height+'px',
                //'top':(opts.overlay_position=='top'?'0':opts.panel_height-opts.overlay_height+'px'),
                //'left':'0',
                'background': opts.overlay_color,
                'opacity': opts.overlay_opacity
            });
            $('.panel iframe', j_panels).css({
                'width': opts.panel_width + 'px',
                'height': (opts.panel_height - opts.overlay_height) + 'px',
                'border': '0'
            });
        };

        function buildFilmstrip() {
            //Add wrapper to filmstrip to hide extra frames
            //j_filmstrip.wrap('<div class="strip_wrapper"></div>');
            if (slide_method == 'strip') {
                j_frames.clone().appendTo(j_filmstrip);
                j_frames.clone().appendTo(j_filmstrip);
                j_frames = $('li', j_filmstrip);
            }
            //If captions are enabled, add caption divs and fill with the image titles
            if (opts.show_captions) {
                j_frames.append('<div class="caption"></div>').each(function(i) {
                    $(this).find('.caption').html($(this).find('img').attr('title'));
                });
            }

            //			j_filmstrip.css({
            //				'listStyle':'none',
            //				'margin':'0',
            //				'padding':'0',
            //				'width':strip_width+'px',
            //				'position':'absolute',
            //				'zIndex':'900',
            //				'top':'0',
            //				'left':'0',
            //				'height':(opts.frame_height+10)+'px',
            //				'background':opts.background_color
            //			});
            //			j_frames.css({
            //				'float':'left',
            //				'position':'relative',
            //				'height':opts.frame_height+'px',
            //				'zIndex':'901',
            //				'marginTop':frame_margin_top+'px',
            //				'marginBottom':'0px',
            //				'marginRight':frame_margin+'px',
            //				'padding':'0',
            //				'cursor':'pointer'
            //			});
            $('img', j_frames).css({
                'border': 'none'
            });
            $('.strip_wrapper', j_gallery).css({
            //'position':'absolute',
            //'top':(opts.filmstrip_position=='top'?'0px':opts.panel_height+'px'),
            //'left':((gallery_width-wrapper_width)/2)+'px',
            //'width':wrapper_width+'px',
            //'height':(opts.frame_height+frame_margin_top+(opts.show_captions?frame_caption_size:frame_margin_top))+'px',
            //'overflow':'hidden'
        });
        $('.caption', j_gallery).css({
            'position': 'absolute',
            'top': opts.frame_height + 'px',
            'left': '0',
            'margin': '0',
            //'width':opts.frame_width+'px',
            'padding': '0',
            'color': opts.caption_text_color,
            'textAlign': 'center',
            //'fontSize':'10px',
            //'height':frame_caption_size+'px',

            'lineHeight': frame_caption_size + 'px'
        });
        var pointer = $('<div></div>');
        //			pointer.attr('id','pointer').appendTo(j_gallery).css({
        //				 'position':'absolute',
        //				 'zIndex':'1000',
        //				 'cursor':'pointer',
        //				 'top':getPos(j_frames[0]).top-(pointer_width/2)+'px',
        //				 'left':getPos(j_frames[0]).left-(pointer_width/2)+'px',
        //				 'height':opts.frame_height-pointer_width+'px',
        //				 'width':opts.frame_width-pointer_width+'px',
        //				 'border':(has_panels?pointer_width+'px solid '+(opts.nav_theme=='dark'?'black':'white'):'none')
        //			});
        j_pointer = $('#pointer', j_gallery);
        //			if(has_panels) {
        //				var pointerArrow = $('<img />');
        //				pointerArrow.attr('src',img_path+opts.nav_theme+'/pointer'+(opts.filmstrip_position=='top'?'-down':'')+'.png').appendTo($('#pointer')).css({
        //					'position':'absolute',
        //					'zIndex':'1001',
        //					'top':(opts.filmstrip_position=='bottom'?'-'+(10+pointer_width)+'px':opts.frame_height+'px'),
        //					'left':((opts.frame_width/2)-10)+'px'
        //				});
        //			}

        //If the filmstrip is animating, move the strip to the middle third
        if (slide_method == 'strip') {
            j_filmstrip.css('left', '-' + ((opts.frame_width + frame_margin) * item_count) + 'px');
            iterator = item_count;
        }
        //If there's a link under the pointer, enable clicking on the pointer
        if ($('a', j_frames[iterator])[0]) {
            j_pointer.click(function() {
                var a = $('a', j_frames[iterator]).eq(0);
                if (a.attr('target') == '_blank') { window.open(a.attr('href')); }
                else { location.href = a.attr('href'); }
            });
        }

        //			//Add navigation buttons
        //			$('<img />').addClass('nav-next').attr('src',img_path+'/next.png').appendTo(j_gallery).css({
        //				'position':'absolute',
        //				'cursor':'pointer',
        //				'top':(opts.filmstrip_position=='top'?0:opts.panel_height)+frame_margin_top+((opts.frame_height-22)/2)+'px',
        //				'right':(gallery_width/2)-(wrapper_width/2)-10-22+'px'
        //			}).click(showNextItem);
        //			$('<img />').addClass('nav-prev').attr('src',img_path+'/prev.png').appendTo(j_gallery).css({
        //				'position':'absolute',
        //				'cursor':'pointer',
        //				'top':(opts.filmstrip_position=='top'?0:opts.panel_height)+frame_margin_top+((opts.frame_height-22)/2)+'px',
        //				'left':(gallery_width/2)-(wrapper_width/2)-10-22+'px'
        //			}).click(showPrevItem);
    };

    //Check mouse to see if it is within the borders of the panel
    //More reliable than 'mouseover' event when elements overlay the panel
    function mouseIsOverPanels(x, y) {
        var pos = getPos(j_gallery[0]);
        var top = pos.top;
        var left = pos.left;
        return x > left && x < left + opts.panel_width && y > top && y < top + opts.panel_height;
    };

    /************************************************/
    /*	Main Plugin Code							*/
    /************************************************/
    return this.each(function() {
        j_gallery = $(this);
        //Determine path between current page and filmstrip images
        //Scan script tags and look for path to GalleryView plugin
        $('script').each(function(i) {
            var s = $(this);
            if (s.attr('src') && s.attr('src').match(/jquery\.galleryview/)) {
                img_path = 'http://localhost/ArabianVideo/gallery';
            }
        });

        //Hide gallery to prevent Flash of Unstyled Content (FoUC) in IE
        j_gallery.css('visibility', 'hidden');

        //Assign elements to variables for reuse
        j_filmstrip = $('.filmstrip', j_gallery);
        j_frames = $('li', j_filmstrip);
        j_panels = $('.panel', j_gallery);

        id = j_gallery.attr('id');

        has_panels = j_panels.length > 0;
        has_filmstrip = j_frames.length > 0;

        if (!has_panels) opts.panel_height = 0;

        //Number of frames in filmstrip
        item_count = has_panels ? j_panels.length : j_frames.length;

        //Number of frames that can display within the screen's width
        //64 = width of block for navigation button * 2
        //5 = minimum frame margin
        strip_size = has_panels ? Math.floor((opts.panel_width - 64) / (opts.frame_width + frame_margin)) : Math.min(item_count, opts.filmstrip_size);


        /************************************************/
        /*	Determine transition method for filmstrip	*/
        /************************************************/
        //If more items than strip size, slide filmstrip
        //Otherwise, slide pointer
        if (strip_size >= item_count) {
            slide_method = 'pointer';
            strip_size = item_count;
        }
        else { slide_method = 'strip'; }

        /************************************************/
        /*	Determine dimensions of various elements	*/
        /************************************************/

        //Width of gallery block
        gallery_width = has_panels ? opts.panel_width : (strip_size * (opts.frame_width + frame_margin)) - frame_margin + 64;

        //Height of gallery block = screen + filmstrip + captions (optional)
        gallery_height = (has_panels ? opts.panel_height : 0) + (has_filmstrip ? opts.frame_height + frame_margin_top + (opts.show_captions ? frame_caption_size : frame_margin_top) : 0);

        //Width of filmstrip
        if (slide_method == 'pointer') { strip_width = (opts.frame_width * item_count) + (frame_margin * (item_count)); }
        else { strip_width = (opts.frame_width * item_count * 3) + (frame_margin * (item_count * 3)); }

        //Width of filmstrip wrapper (to hide overflow)
        wrapper_width = ((strip_size * opts.frame_width) + ((strip_size - 1) * frame_margin));

        /************************************************/
        /*	Apply CSS Styles							*/
        /************************************************/
        j_gallery.css({
            'position': 'relative',
            'margin': '0',
            'background': opts.background_color,
            'border': opts.border
            //'width':gallery_width+'px',
            //'height':gallery_height+'px'
        });

        /************************************************/
        /*	Build filmstrip and/or panels				*/
        /************************************************/
        if (has_filmstrip) {
            buildFilmstrip();
        }
        if (has_panels) {
            buildPanels();
        }


        /************************************************/
        /*	Add events to various elements				*/
        /************************************************/
        if (has_filmstrip) enableFrameClicking();



        $().mousemove(function(e) {
            if (mouseIsOverPanels(e.pageX, e.pageY)) {
                if (opts.pause_on_hover) {
                    $(document).oneTime(500, "animation_pause", function() {
                        $(document).stopTime("transition");
                        paused = true;
                    });
                }
                if (has_panels && !has_filmstrip) {
                    $('.nav-overlay').fadeIn('fast');
                    $('.nav-next').fadeIn('fast');
                    $('.nav-prev').fadeIn('fast');
                }
            } else {
                if (opts.pause_on_hover) {
                    $(document).stopTime("animation_pause");
                    if (paused) {
                        $(document).everyTime(opts.transition_interval, "transition", function() {
                            showNextItem();
                        });
                        paused = false;
                    }
                }
                if (has_panels && !has_filmstrip) {
                    $('.nav-overlay').fadeOut('fast');
                    $('.nav-next').fadeOut('fast');
                    $('.nav-prev').fadeOut('fast');
                }
            }
        });


        /************************************************/
        /*	Initiate Automated Animation				*/
        /************************************************/
        //Show the first panel
        j_panels.eq(0).show();

        //If we have more than one item, begin automated transitions
        if (item_count > 1) {
            $(document).everyTime(opts.transition_interval, "transition", function() {
                showNextItem();
            });
        }

        //Make gallery visible now that work is complete
        j_gallery.css('visibility', 'visible');
    });
};

$.fn.galleryView.defaults = {
    panel_width: 400,
    panel_height: 300,
    frame_width: 80,
    frame_height: 80,
    filmstrip_size: 3,
    overlay_height: 70,
    overlay_font_size: '1em',
    transition_speed: 400,
    transition_interval: 6000,
    overlay_opacity: 0.6,
    overlay_color: 'black',
    background_color: 'black',
    overlay_text_color: 'white',
    caption_text_color: 'white',
    border: '1px solid black',
    nav_theme: 'light',
    easing: 'swing',
    filmstrip_position: 'bottom',
    overlay_position: 'bottom',
    show_captions: false,
    fade_panels: true,
    pause_on_hover: false
};
})(jQuery);