/*
author:laoguoyong
*/
(function(){
/* -------------------------簡單的選擇器------------------- ----
@ 參數 [string]
---------------------------------------
★-只支援以下選擇-★
@ 支援一級選擇器：如'#id','.class','p'
@ 支持後代選擇，如 '.class p','body span'
@ 支援子元素選擇，如 '.class>p','body>span'
----------------------------------------
@ return [Array]
*/
var selector = function(str){
// 定義元素陣列
var elem = [];
/* 私人方法
------------------------*/
//返回是id的元素
function _getId(id){
return document.getElementById(id);
}
//傳回有此類名的元素-元素
function _getByClassName(className,parent){
var class_array = [],
node = parent != undefined&&parent.nodeType==1?parent.getElementsByTagName('*'):document.getElementsBy?parent.getElementsByTagName('*'):document.getElementsBy?parent.getElementsByTagName('*'):document.getElementsByTagName('*'),
reg = new RegExp("(^|\s)" className "(
\s|$)");
for(var n=0,i=node.length;n
if(reg.test(node[n].className)){
類_array.push(node[n]);
}
}
return 類_array;
}
//一級選擇，如 '#id','p','.class'
// return [Array]
function _getDom(s){
var array_elem = [];
if (s.indexOf('#')==0){
array_elem.push(_getId(s.slice(1)));
}
else if(s.indexOf('.')==0){
array_elem = array_elem.concat(_getByClassName(s.slice(1)));
}
else{
var tag = document.getElementsByTagName(s);
for(var n=0,i=tag.length;n
array_elem.push(tag[n]);
}
}
return array_elem;
}
/*
@ arry_elm [Array] : 元素數組，如 ['.demo','p'] ，選擇的是.demo下面的p元素，至於是選擇後代還是子代，請看第2個參數解釋
@ r [String] -可選（不傳預設為選擇後代）: '>'，是選擇子代元素;
--------------------------
@返回[陣列]
*/
函數 _query(array_elem,r){
var node = array_elem,
type_name = 節點[0].match(/#/)?'id_'節點[0].slice(1):節點[0].match(/./)?'className_'節點[0].slice(1 ):'tagName_'節點[0],
子 = _getDom(節點[1]),
type = type_name.split('_'),
len = document.getElementsByTagName('*').length,
reg = new RegExp("(^|\s)" type[1] "(
\s|$)");
for(var i=0,j=child.length;i
var par = 兒童[i].parentNode;
for(var n=0;n
if(par.nodeType == 9){
休息；
}
if(reg.test(par[type[0]])){
elem.push(child[i]);
休息;
}其他{
if(r == '>') 中斷;
par = par.parentNode;
}
}
}
}
/* 介面
-----------------------*/
var elemStr = str.replace(/(^s )|(s $)/,'');
if(document.querySelectorAll){
var dom = document.querySelectorAll(elemStr);
for(var n=0,len=dom.length;n
elem.push(dom[n]);
}
}其他{
var split = /[>s]/g.exec(elemStr);
若（分割）{
var node = elemStr.split(split[0]);
_query(節點,split[0]);
}其他{
elem = elem.concat( _getDom(elemStr) );
}
}
return elem;
}
/* 彈跳窗功能建構子
-----------------------*/
function LGY_photoBox(option){
this.opt = option;
this.oTarget = typeof option.target == 'object'?option.target:selector(option.target);
if(!this.oTarget) return;
this.nLen = this.oTarget.length; //總個數
this.aBigimg_src = []; //大圖資料數組
this.aTitle = []; //標題資料陣列
this.nIndex = 0; //索引
this.nImgWidth = 0; //動態取得圖片的寬
this.nImgHeight = 0; //動態擷取圖片的高
this.nDelay = 0.2;
this.intit();
}
LGY_photoBox.prototype = {
intit:function(){
var _that = this;
this.getData();
for(var n=0;n
this.oTarget[n].index = n;
this.oTarget[n].onclick = function(e){
_that.createCover();
var e = _that.tools.getEvent(e),
target = _that.tools.getTarget(e);
// 設定且沒有捲軸出現
為
// 取得當時索引
_that.nIndex = this.index;
//初次判斷
_that.firstLoad(_that.aBigimg_src[_that.nIndex],function(){
//插入結構物
_that.createBoxDom();
//關閉
_that.tools.getId('gy_photoBox_close').onclick = function(){
_that.removeBox();
}
//判斷左右按鈕顯示
_that.btnIsShow();
// 上一张
_that.btnPrev();
// 下一张
_that.btnNext();
// 加载图片
_that.imgChange(_that.aBigimg_src[_that.nIndex]);
});
// 重置窗口大小
_that.windowResize();
// 键盘事件
_that.keyEvent();
//阻止跳转
return false;
}
}
},
createBoxDom:function(){
var doc = document,
exHtml = '',
boxHtml = doc.createElement('div');
boxHtml.id = 'gy_photoBox';
doc.body.appendChild(boxHtml);
if(typeof this.opt.appendHTML == 'string'){
exHtml = this.opt.appendHTML;
}
boxHtml.innerHTML = '
'+
'
'+
'
'+
'
'+exHtml+'
'+
'
'+
'
http://www.pconline.com.cn/blank.gif" />'+
'
![]()
'+
'
'+
'
'+
''+
'/'+this.nLen+
''+
'
'+
'
'+
'
';
},
createCover:function(){
// 建立覆蓋層
var doc = 文檔，且
coverHtml = doc.createElement('div');
coverHtml.id = 'gy_photoBox_cover';
doc.body.appendChild(coverHtml);
//設定覆蓋層的樣式
this.tools.setCss(this.tools.getId('gy_photoBox_cover'),{'height':(doc.body.scrollTop || doc.documentElement.scrollTop) (doc.documentElement.clientHeight) 'px'});
},
setBoxCss:function(){
var doc = 文檔，且
nScrollTop = doc.body.scrollTop || doc.documentElement.scrollTop,
nWindow_h = doc.documentElement.clientHeight,
eBox_head_h = this.tools.getId('gy_photoBox_head').clientHeight,
eBox = this.tools.getId('gy_photoBox'),
eBoxPadding = 10,
hold_h = nWindow_h - eBoxPadding - 50 - eBox_head_h,
寬度 = this.nImgWidth ,
高度 = this.nImgHeight;
//alert('nWindow_h:'nWindow_h'-''eBoxPadding:'eBoxPadding'-''eBox_head_h:'eBox_head_h);
// 圖片大小超過可見範圍，並進行縮放
if(this.nImgHeight>hold_h){
高度=hold_h，
width = Math.ceil(this.nImgWidth*(height/this.nImgHeight));
}
//設定框在整個頁面中位置
this.tools.setCss(eBox,{'width':width 'px',
'height':eBoxhead_h 高度 'p
地
'topBox *n
this.tools.setCss(this.tools.getId('gy_photoBox_main'),{'width':寬度'px','height':高度'px'});
//設定覆蓋層的樣式
this.tools.setCss(this.tools.getId('gy_photoBox_cover'),{'height':nScrollTop doc.documentElement.clientHeight 'px'});
},
刪除方塊：函數（）{
var doc = 文檔;
if(this.tools.getId('gy_photoBox')){
doc.body.removeChild(this.tools.getId('gy_photoBox'));
}
if(this.tools.getId('gy_photoBox_cover')){
document.body.removeChild(this.tools.getId('gy_photoBox_cover'));
}
this.tools.setCss(document.documentElement,{'height':'auto','overflow-y':'auto','_overflow-y':'scroll','overflow-x':'auto'}) ;
},
getData:function(){
for(var n=0;n
var src = this.oTarget[n].getAttribute('href'),
title = this.oTarget[n].getAttribute('title');
this.aBigimg_src.push(src);
if(!title) 標題 = '';
this.aTitle.push(標題);
}
},
btnIsShow:function(){
this.tools.setCss(this.tools.getId('gy_photoBox_prev'),{'display':'block'});
this.tools.setCss(this.tools.getId('gy_photoBox_next'),{'display':'block'});
if(this.nIndex == 0) this.tools.setCss(this.tools.getId('gy_photoBox_prev'),{'display':'none'});
if(this.nIndex == (this.nLen-1)) this.tools.setCss(this.tools.getId('gy_photoBox_next'),{'display':'none'});
},
imgChange:function(){
var _that =這個，
_src = this.aBigimg_src[this.nIndex],
eLoadingTips = this.tools.getId('gy_photoBox_img_loading'),
eImg = this.tools.getId('gy_photoBox_img'),
eTitle = this.tools.getId('gy_photoBox_title'),
eInfor = this.tools.getId('gy_photoBox_infor');
// 顯示loading圖片
this.tools.setCss(eLoadingTips,{'display':'block'});
this.tools.setCss(eInfor,{'display':'none'});
// 判斷左右按鈕顯示
this.btnIsShow();
// 圖片載入處理
this.imgLoading({
'src':_src,
'成功':function(){
_that.tools.setCss(eLoadingTips,{'display':'none'});
_that.tools.setCss(eInfor,{'display':'block'});
// 設定真實圖片路徑，標題，目前頁碼
eImg.src = _src;
eTitle.innerHTML = _that.aTitle[_that.nIndex];
_that.tools.getId('gy_photoBox_index').innerHTML = (_that.nIndex 1);
// 設定樣式
_that.setBoxCss();
// 彈窗呈現
_that.tools.setCss(_that.tools.getId('gy_photoBox'),{'visibility':'visible'});
);
if(_that.tools.getId('gy_photoBox_firstLoad')){
document.body.removeChild(_that.tools.getId('gy_photoBox_firstLoad'));
);
}
// 每次切換執行的回呼函數
if(typeof _that.opt.onChange == 'function'){
_that.opt.onChange({'src':_src,'index':_that.nIndex,'title":_.aTitle*
}
},
'error':function(){
setTimeout(function(){
_that.tools.setCss(eLoadingTips,{'display':'none'});
},200);
eImg.src = 'gyPhotoBox/error.png';
eTitle.innerHTML = '暫時相關圖片';
_that.nImgWidth = 400;
_that.nImgHeight = 300;
_that.setBoxCss();
_that.tools.setCss(_that.tools.getId('gy_photoBox'),{'visibility':'visible'});
if(_that.tools.getId('gy_photoBox_firstLoad')){
document.body.removeChild(_that.tools.getId('gy_photoBox_firstLoad'));
);
}
}
});
},
btnPrev:function(){
var _that = this;
this.tools.getId('gy_photoBox_prev').onclick = function(){
_that.nIndex--;
_that.imgChange();
}
},
btnNext:function(){
var _that = this;
this.tools.getId('gy_photoBox_next').onclick = function(){
_that.nIndex ;
_that.imgChange();
}
},
keyEvent:function(){
var _that = this;
document.onkeydown = function(e){
var e = e || window.event;
開關（e.keyCode）{
案例37：{
if(_that.nIndex != 0&&_that.tools.getId('gy_photoBox_prev')){
_that.nIndex--;
_that.imgChange();
}
};休息;
案例39：{
if(_that.nIndex != (_that.nLen-1)&&_that.tools.getId('gy_photoBox_next')){
_that.nIndex ;
_that.imgChange();
}
};休息;
案例27：{
_that.removeBox();
};休息;
}
}
},
/*
@ src [String] 圖片的地址
@success [函數] 圖片載入成功的回呼函數
@error [函數] 圖片載入失敗的回呼函數
*/
imgLoading:函數(opt){
var _img = new Image(),
_that = this;
_img.onload = function(){
_that.nImgWidth = this.width;
_that.nImgHeight = this.height;
if(typeof opt.success == '函數'){
setTimeout(function(){
opt.success();
},300);
}
}
_img.onerror = function(){
if(typeof opt.error){
opt.error();
}
}
//注意：放在onload事件下面，否則會出現BUG
_img.src = opt.src;
},
以先載入：函數（src，回呼）{
var _that = 這個，
html = document.createElement('div');
html.id = 'gy_photoBox_firstLoad';
document.body.appendChild(html);
this.tools.setCss(this.tools.getId('gy_photoBox_firstLoad'),{'top':(document.body.scrollTop || document.documentElement.scrollTop) (document.documentElement. ;
if(typeof 回呼 == '函數') {
回調();
}
},
視窗調整大小：函數（）{
var _that = 這個，
_timer = null;
// 函數節流
window.onresize = function(){
清除逾時(_timer);
_timer = setTimeout(function(){
if( _that.tools.getId('gy_photoBox')){
_that.setBoxCss();
}
},100);
}
},
工具:函數(){
返回{
getEvent:function(e){
返回 e || window.event;
},
getTarget:function(e){
回傳 e.target || e.srcElement;
},
PreventDefault:function(e){
e.preventDefault?e.preventDefault():e.returnValue = false;
},
getId:函數(id){
return document.getElementById(id);
},
getCss:function(節點,值){
return node.currentStyle?node.currentStyle[value]:getCompulatedStyle(node,null)[value];
},
setCss:function(node,val){
for(var v in val){
節點.style.cssText = ';' v ':' val[v];
}
}
}
}()
}
window.LGY_photoBox = LGY_photoBox;
})();
