/* Documentation sample */
function judgeIsMobile() {
    return (/phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone|webOS|android/i.test(navigator.userAgent))
}

function loadPage(page) {
	var img = $('<img />');
	img.load(function() {
		var container = $('.sample-docs .p'+page);
		img.css({width: container.width(), height: container.height()});
		img.appendTo($('.sample-docs .p'+page));
		container.find('.loader').remove();
	});
	//处理移动端
	console.log('page',page)
	if(this.judgeIsMobile()) {
			img.attr('src', 'mobile-pages/' +  `1 (${page-1})` + '.jpg');
			return;
	}
	img.attr('src', 'pages/' +  `1 (${page-2})` + '.jpg');

}

function addPage(page, book) {

	var id, pages = book.turn('pages');

	var element = $('<div />', {});
	if (book.turn('addPage', element, page)) {
		
		if (page<191) {
			element.html('<div class="gradient"></div><div class="loader"></div>');
			loadPage(page);
		}
	}
}

// 控制书上方按钮---暂时无用
function updateTabs() {
	
	var tabs = {7: 'Clases', 12:'Constructor', 14:'Properties', 16:'Methods', 23:'Events'},
		left = [],
		right = [],
		book = $('.sample-docs'),
		actualPage = book.turn('page'),
		view = book.turn('view');

	for (var page in tabs) {
		var isHere = $.inArray(parseInt(page, 10), view)!=-1;

		if (page>actualPage && !isHere)
			right.push('<a href="#page/' + page + '">' + tabs[page] + '</a>');
		else if (isHere) {
			
			if (page%2===0)
				left.push('<a href="#page/' + page + '" class="on">' + tabs[page] + '</a>');
			else
				right.push('<a href="#page/' + page + '" class="on">' + tabs[page] + '</a>');
		} else
			left.push('<a href="#page/' + page + '">' + tabs[page] + '</a>');

	}
	$('.sample-docs .tabs .left').html(left.join(''));
	$('.sample-docs .tabs .right').html(right.join(''));

}

// 总数/2-1 控制进度条
function numberOfViews(book) {
	return book.turn('pages') / 2 + 1;
}

// 当前page/2-1 控制进度条
function getViewNumber(book, page) {
	return parseInt((page || book.turn('page'))/2 + 1, 10);
}

//进度条按钮层级
function moveBar(yes) {
	if (Modernizr && Modernizr.csstransforms) {
		$('#slider .ui-slider-handle').css({zIndex: yes ? -1 : 10000});
	}
}
//拖动滚动条显示的小图
function setPreview(view) {
	var previewWidth = 115,
		previewHeight = 73,
		previewSrc = 'pics/preview.jpg',
		preview = $(_thumbPreview.children(':first')),
		numPages = (view==1 || view==$('#slider').slider('option', 'max')) ? 1 : 2,
		width = (numPages==1) ? previewWidth/2 : previewWidth;

	_thumbPreview.
		addClass('no-transition').
		css({width: width + 15,
			height: previewHeight + 15,
			top: -previewHeight - 30,
			left: ($($('#slider').children(':first')).width() - width - 15)/2
		});

	preview.css({
		width: width,
		height: previewHeight
	});

	if (preview.css('background-image')==='' ||
		preview.css('background-image')=='none') {

		preview.css({backgroundImage: 'url(' + previewSrc + ')'});

		setTimeout(function(){
			_thumbPreview.removeClass('no-transition');
		}, 0);

	}

	preview.css({backgroundPosition:
		'0px -'+((view-1)*previewHeight)+'px'
	});
}