// when the DOM is ready...
$(document).ready(function () {

    var $panels = $('#slider .scrollContainer > div');
    var $container = $('#slider .scrollContainer');
	var $tablets = $('.tablet');
	var $pills = $('.panel');
	var $pillcaps = $('[class*=_pill]');
	var $pane = $('#pane')[0];
	var $indicators = $('.macro-indicator');
	var $favicons = $('.favicon');
	
	// preload viewport images
	jQuery.preloadImages = function()
	{
	  for(var i = 0; i<arguments.length; i++)
	  {
	    jQuery("<img>").attr("src", arguments[i]);
	  }
	}
	$.preloadImages("viewport1.png", "viewport2.PNG", "viewport3.PNG", "viewport4.PNG", 
	"viewport5.PNG", "viewport6.PNG", "viewport7.PNG", "viewport8.PNG", "viewport9.PNG", 
	"viewport10.PNG", "viewport11.PNG");

    // if false, we'll float all the panels left and fix the width 
    // of the container
    var horizontal = true;

    // float the panels left if we're going horizontal
    if (horizontal) {
        $panels.css({
            'float' : 'left',
            'position' : 'relative' // IE fix to ensure overflow is hidden
        });

        // calculate a new width for the container (so it holds all panels)
        $container.css('width', 9999);
    }

    // collect the scroll object, at the same time apply the hidden overflow
    // to remove the default scrollbars that will appear
    var $scroll = $('#slider .scroll').css('overflow', 'hidden');

    // apply our left + right buttons
	/*$scroll
        .before('<img class="scrollButtons left" src="images/scroll_left.png" />')
        .after('<img class="scrollButtons right" src="images/scroll_right.png" />');*/

	// update viewport
	function updateViewport(tablet_id) {
		if (tablet_id === 0) {
			$pane.src = "viewport1.png";
		}
		else if (tablet_id === 1) {
			$pane.src = "viewport2.PNG";
		}
		else if (tablet_id === 2) {
			$pane.src = "viewport3.PNG";
		}
		else if (tablet_id === 3) {
			$pane.src = "viewport4.PNG";
		}
		else if (tablet_id === 4) {
			$pane.src = "viewport5.PNG";
		}
		else if (tablet_id === 5) {
			$pane.src = "viewport6.PNG";
		}
		else if (tablet_id === 6) {
			$pane.src = "viewport7.PNG";
		}
		else if (tablet_id === 7) {
			$pane.src = "viewport8.PNG";
		}
		else if (tablet_id === 8) {
			$pane.src = "viewport9.PNG";
		}
		else if (tablet_id === 9) {
			$pane.src = "viewport10.PNG";
		}
		else if (tablet_id === 10) {
			$pane.src = "viewport11.PNG";
		}
	}
		
    // handle nav selection
    function selectNav() {
        $(this)
            .parents('ul:first')
                .find('a')
                    .removeClass('selected')
                .end()
            .end()
            .addClass('selected');
		
		var active_id = 0;
		for (i=0; i < $indicators.length; i++) {
			if ($indicators[i] === $(this).find('img:first')[0]) {
				active_id = i;
			}
			$indicators[i].src = "unsel-" + (i+1) + ".gif";
		}	
		$(this).find('img:first')[0].src = "sel-" + (active_id+1) + ".gif";
		$('#pill'+(active_id+1)).click();
    }
	
	function selectFavicon() {
		var tablet_id = 0;
		for (i=0; i < $favicons.length; i++) {
			if ($favicons[i] === $(this)[0]) {
				tablet_id = i;
			}
			$($favicons[i]).removeClass('active');
		}
		$($tablets[tablet_id]).click();
		$($favicons[tablet_id]).addClass('active');
	}
	
	// handle tablet selection
	function selectTablet() {
		for (i=0; i < $tablets.length; i++) {
			$($tablets[i]).removeClass('active');
		}
		var tablet_id = 0;
		
		for (i=0; i < $tablets.length; i++) {
			if (this === $tablets[i]) {
				tablet_id = i;
			}
		}
		$(this).addClass('active');
		
		var pill_num = getPillNum(tablet_id);
		$('ul.navigation a:eq('+(pill_num-1)+')').click();
		updateViewport(tablet_id);
	}
	
	function getPillNum(tablet_id) {
		if (tablet_id === 0 || tablet_id === 1) {
			return 1;
		}
		else if (tablet_id === 2 || tablet_id === 3) {
			return 2;
		}
		else if (tablet_id >= 4 && tablet_id <= 6) {
			return 3;
		}
		else if (tablet_id >= 7 && tablet_id <=10) {
			return 4;
		}
	}
	
	// handle pill focus
	function focusPill() {
		var pill_id = 0;
		for(i=0; i < $pills.length; i++) {
			$($pills[i]).removeClass('focus');
			if ($pills[i] === this) {
				pill_id = i;
			}
		}
		for(i=0; i < $pillcaps.length; i++) {
			$($pillcaps[i]).removeClass('focus');
		}
		$(this).addClass('focus');
		$(this).children('[class*=_pill]').addClass('focus');
		
		//$('ul.navigation a:eq('+pill_id+')').find('img:first').click();
	}

    $('#slider .navigation').find('a').click(selectNav);
	$tablets.click(selectTablet);
	$pills.click(focusPill);
	$favicons.click(selectFavicon);

    // go find the navigation link that has this target and select the nav
    function trigger(data) {
        var el = $('#slider .navigation').find('a[href$="' + data.id + '"]').get(0);
        selectNav.call(el);
    }

    if (window.location.hash) {
        trigger({ id : window.location.hash.substr(1) });
    } else {
        $('ul.navigation a:first').click();
    }

    // offset is used to move to *exactly* the right place, since I'm using
    // padding on my example, I need to subtract the amount of padding to
    // the offset.  Try removing this to get a good idea of the effect
    var offset = parseInt((horizontal ? 
        $container.css('paddingTop') : 
        $container.css('paddingLeft')) 
        || 0) * -1;


    var scrollOptions = {
        target: $scroll, // the element that has the overflow

        // can be a selector which will be relative to the target
        items: $panels,

        navigation: '.navigation a',

        // selectors are NOT relative to document, i.e. make sure they're unique
        prev: 'img.left', 
        next: 'img.right',

        // allow the scroll effect to run both directions
        axis: 'xy',

        onAfter: trigger, // our final callback

        offset: offset - 70,

        // duration of the sliding effect
        duration: 500,

        // easing - can be used with the easing plugin: 
        // http://gsgd.co.uk/sandbox/jquery/easing/
        easing: 'swing'
    };

    // apply serialScroll to the slider - we chose this plugin because it 
    // supports// the indexed next and previous scroll along with hooking 
    // in to our navigation.
    $('#slider').serialScroll(scrollOptions);

    // now apply localScroll to hook any other arbitrary links to trigger 
    // the effect
    $.localScroll(scrollOptions);

    // finally, if the URL has a hash, move the slider in to position, 
    // setting the duration to 1 because I don't want it to scroll in the
    // very first page load.  We don't always need this, but it ensures
    // the positioning is absolutely spot on when the pages loads.
    scrollOptions.duration = 1;
    $.localScroll.hash(scrollOptions);

});