/*

 * yuga.js 0.7.1 - 優雅なWeb制作のためのJS

 *

 * Copyright (c) 2009 Kyosuke Nakamura (kyosuke.jp)

 * Licensed under the MIT License:

 * http://www.opensource.org/licenses/mit-license.php

 *

 * Since:     2006-10-30

 * Modified:  2009-01-27

 *

 * jQuery 1.3.1

 * ThickBox 3.1

 */



/*

 * [使用方法] XHTMLのhead要素内で次のように読み込みます。

 

<link rel="stylesheet" href="css/thickbox.css" type="text/css" media="screen" />

<script type="text/javascript" src="js/jquery.js"></script>

<script type="text/javascript" src="js/thickbox.js"></script>

<script type="text/javascript" src="js/yuga.js" charset="utf-8"></script>



 */



(function($) {



	$(function() {

		/*$.yuga.selflink();*/

		$.yuga.rollover();

		/*$.yuga.externalLink();*/

		/*$.yuga.thickbox();*/

		$.yuga.scroll();

		$.yuga.tab();

		/*$.yuga.stripe();*/

		/*$.yuga.css3class();*/

	});



	//---------------------------------------------------------------------



	$.yuga = {

		// URIを解析したオブジェクトを返すfunction

		Uri: function(path){

			var self = this;

			this.originalPath = path;

			//絶対パスを取得

			this.absolutePath = (function(){

				var e = document.createElement('span');

				e.innerHTML = '<a href="' + path + '" />';

				return e.firstChild.href;

			})();

			//絶対パスを分解

			var fields = {'schema' : 2, 'username' : 5, 'password' : 6, 'host' : 7, 'path' : 9, 'query' : 10, 'fragment' : 11};

			var r = /^((\w+):)?(\/\/)?((\w+):?(\w+)?@)?([^\/\?:]+):?(\d+)?(\/?[^\?#]+)?\??([^#]+)?#?(\w*)/.exec(this.absolutePath);

			for (var field in fields) {

				this[field] = r[fields[field]];

			}

			this.querys = {};

			if(this.query){

				$.each(self.query.split('&'), function(){

					var a = this.split('=');

					if (a.length == 2) self.querys[a[0]] = a[1];

				});

			}

		},

		//現在のページと親ディレクトリへのリンク

		selflink: function (options) {

			var c = $.extend({

				selfLinkAreaSelector:'body',

				selfLinkClass:'current',

				parentsLinkClass:'parentsLink',

				postfix: '_cr',

				changeImgSelf:true,

				changeImgParents:true

			}, options);

			$(c.selfLinkAreaSelector+((c.selfLinkAreaSelector)?' ':'')+'a[href]').each(function(){

				var href = new $.yuga.Uri(this.getAttribute('href'));

				var setImgFlg = false;

				if ((href.absolutePath == location.href) && !href.fragment) {

					//同じ文書にリンク

					$(this).addClass(c.selfLinkClass);

					setImgFlg = c.changeImgSelf;

				} else if (0 <= location.href.search(href.absolutePath)) {

					//親ディレクトリリンク

					$(this).addClass(c.parentsLinkClass);

					setImgFlg = c.changeImgParents;

				}

				if (setImgFlg){

					//img要素が含まれていたら現在用画像（_cr）に設定

					$(this).find('img').each(function(){

						this.originalSrc = $(this).attr('src');

						this.currentSrc = this.originalSrc.replace(new RegExp('('+c.postfix+')?(\.gif|\.jpg|\.png)$'), c.postfix+"$2");

						$(this).attr('src',this.currentSrc);

					});

				}

			});

		},

		//ロールオーバー

		rollover: function(options) {

			var c = $.extend({

				hoverSelector: '.btn, .allbtn img',

				groupSelector: '.btngroup',

				postfix: '_f2'

			}, options);

			//ロールオーバーするノードの初期化

			var rolloverImgs = $(c.hoverSelector).filter(isNotCurrent);

			rolloverImgs.each(function(){

				this.originalSrc = $(this).attr('src');

				this.rolloverSrc = this.originalSrc.replace(new RegExp('('+c.postfix+')?(\.gif|\.jpg|\.png)$'), c.postfix+"$2");

				this.rolloverImg = new Image;

				this.rolloverImg.src = this.rolloverSrc;

			});

			//グループ内のimg要素を指定するセレクタ生成

			var groupingImgs = $(c.groupSelector).find('img').filter(isRolloverImg);



			//通常ロールオーバー

			rolloverImgs.not(groupingImgs).hover(function(){

				$(this).attr('src',this.rolloverSrc);

			},function(){

				$(this).attr('src',this.originalSrc);

			});

			//グループ化されたロールオーバー

			$(c.groupSelector).hover(function(){

				$(this).find('img').filter(isRolloverImg).each(function(){

					$(this).attr('src',this.rolloverSrc);

				});

			},function(){

				$(this).find('img').filter(isRolloverImg).each(function(){

					$(this).attr('src',this.originalSrc);

				});

			});

			//フィルタ用function

			function isNotCurrent(i){

				return Boolean(!this.currentSrc);

			}

			function isRolloverImg(i){

				return Boolean(this.rolloverSrc);

			}



		},

		//外部リンクは別ウインドウを設定

		externalLink: function(options) {

			var c = $.extend({

				windowOpen:true,

				externalClass: 'externalLink',

				addIconSrc: ''

			}, options);

			var uri = new $.yuga.Uri(location.href);

			var e = $('a[href^="http://"]').not('a[href^="' + uri.schema + '://' + uri.host + '/' + '"]');

			if (c.windowOpen) {

				e.click(function(){

					window.open(this.href, '_blank');

					return false;

				});

			}

			if (c.addIconSrc) e.not(':has(img)').after($('<img src="'+c.addIconSrc+'" class="externalIcon" />'));

			e.addClass(c.externalClass);

		},

		//画像へ直リンクするとthickboxで表示(thickbox.js利用)

		thickbox: function() {

			try {

				tb_init('a[href$=".jpg"]:not(.thickbox, a[href*="?"]), a[href$=".gif"][href!="?"]:not(.thickbox, a[href*="?"]), a[href$=".png"][href!="?"]:not(.thickbox, a[href*="?"])');

			} catch(e) {

			}	

		},

		//ページ内リンクはするするスクロール

		scroll: function(options) {

			//ドキュメントのスクロールを制御するオブジェクト

			var scroller = (function() {

				var c = $.extend({

					easing:100,

					step:30,

					fps:60,

					fragment:''

				}, options);

				c.ms = Math.floor(1000/c.fps);

				var timerId;

				var param = {

					stepCount:0,

					startY:0,

					endY:0,

					lastY:0

				};

				//スクロール中に実行されるfunction

				function move() {

					if (param.stepCount == c.step) {

						//スクロール終了時

						setFragment(param.hrefdata.absolutePath);

						window.scrollTo(getCurrentX(), param.endY);

					} else if (param.lastY == getCurrentY()) {

						//通常スクロール時

						param.stepCount++;

						window.scrollTo(getCurrentX(), getEasingY());

						param.lastY = getEasingY();

						timerId = setTimeout(move, c.ms); 

					} else {

						//キャンセル発生

						if (getCurrentY()+getViewportHeight() == getDocumentHeight()) {

							//画面下のためスクロール終了

							setFragment(param.hrefdata.absolutePath);

						}

					}

				}

				function setFragment(path){

					location.href = path

				}

				function getCurrentY() {

					return document.body.scrollTop  || document.documentElement.scrollTop;

				}

				function getCurrentX() {

					return document.body.scrollLeft  || document.documentElement.scrollLeft;

				}

				function getDocumentHeight(){

					return document.documentElement.scrollHeight || document.body.scrollHeight;

				}

				function getViewportHeight(){

					return (!$.browser.safari && !$.browser.opera) ? document.documentElement.clientHeight || document.body.clientHeight || document.body.scrollHeight : window.innerHeight;

				}

				function getEasingY() {

					return Math.floor(getEasing(param.startY, param.endY, param.stepCount, c.step, c.easing));

				}

				function getEasing(start, end, stepCount, step, easing) {

					var s = stepCount / step;

					return (end - start) * (s + easing / (100 * Math.PI) * Math.sin(Math.PI * s)) + start;

				}

				return {

					set: function(options) {

						this.stop();

						if (options.startY == undefined) options.startY = getCurrentY();

						param = $.extend(param, options);

						param.lastY = param.startY;

						timerId = setTimeout(move, c.ms); 

					},

					stop: function(){

						clearTimeout(timerId);

						param.stepCount = 0;

					}

				};

			})();

			$('a[href^=#], area[href^=#]').not('a[href=#], area[href=#]').each(function(){

				this.hrefdata = new $.yuga.Uri(this.getAttribute('href'));

			}).click(function(){

				var target = $('#'+this.hrefdata.fragment);

				if (target.length == 0) target = $('a[name='+this.hrefdata.fragment+']');

				if (target.length) {

					scroller.set({

						endY: target.offset().top,

						hrefdata: this.hrefdata

					});

					return false;

				}

			});

		},

		//タブ機能

		tab: function(options) {

			var c = $.extend({

				tabNavSelector:'.tabNav',

				tabSheetsSelector:'.stepSheets',

				activeTabClass:'active'

			}, options);

			var tabNavList;

			$(c.tabNavSelector).each(function(){

				tabNavList = $(this).find('a[href^=#], area[href^=#]');

				var tabBodyList;

				tabNavList.each(function(){

					this.hrefdata = new $.yuga.Uri(this.getAttribute('href'));

					var selecter = '#'+this.hrefdata.fragment;

					if (tabBodyList) {

						tabBodyList = tabBodyList.add(selecter);

					} else {

						tabBodyList = $(selecter);

					}

					$(this).unbind('click');

					$(this).click(function(){

						tabNavList.removeClass(c.activeTabClass);

						$(this).addClass(c.activeTabClass);

						tabBodyList.hide();

						$(selecter).show();

						return false;

					});

				});

				tabBodyList.hide()

				tabNavList.filter(':first').trigger('click');

			});

			$(c.tabSheetsSelector).each(function(){

				var anchorList = $(this).find('a[href^=#], area[href^=#]');

				anchorList.each(function(){

					var filterstring = '[href="#' + this.hrefdata.fragment + '"]';

					if (tabNavList.filter(filterstring).length > 0) {

						$(this).unbind('click');

						$(this).click(function(){

							var filterstring = '[href="#' + this.hrefdata.fragment + '"]';

							tabNavList.filter(filterstring).trigger('click');

							return false;

						});

					}

				});

			});

		},

		//奇数、偶数を自動追加

		stripe: function(options) {

			var c = $.extend({

				oddClass:'odd',

				evenClass:'even'

			}, options);

			$('ul, ol').each(function(){

				//JSでは0から数えるのでevenとaddを逆に指定

				$(this).children('li:odd').addClass(c.evenClass);

				$(this).children('li:even').addClass(c.oddClass);

			});

			$('table, tbody').each(function(){

				$(this).children('tr:odd').addClass(c.evenClass);

				$(this).children('tr:even').addClass(c.oddClass);

			});

		},

		//css3のクラスを追加

		css3class: function() {

			//:first-child, :last-childをクラスとして追加

			$('body :first-child').addClass('firstChild');

			$('body :last-child').addClass('lastChild');

			//css3の:emptyをクラスとして追加

			$('body :empty').addClass('empty');

		}

	};

})(jQuery);