21视频教程网3月27日整理
YAO.YLightBox = {
isHidden: false,
photos: null,
length: 0,
YOverlay: null,
YBox: null,
YBoxDefaultWidth: 500,
YBoxDefaultHeight: 0,
YBoxHd: null,
YBoxHdHeight: 0,
YBoxTitle: null,
YBoxToolBar: null,
closeable: true, // 是否有关闭按钮(这个我忘了加ESC的按钮事件的支持,会加上的。)
YBoxCloseBar: null,
maximizable: true, // 伸缩显示图片按钮是否可用
YBoxMaximizeBar: null,
newindowable: true, // 新窗口打开图片按钮是否可用
YBoxNewWinBar: null,
YBoxBd: null,
YBoxBDefaultHeight: 0,
YBoxPhoto: null,
YBoxPhotoDefaultWidth: 0,
YBoxPhotoDefaultHeight: 0,
YBoxTips: null,
YBoxIndex: null,
YBoxLastIndex: 0,
carouselable: true, // 是否有缩略图索引(Carousel插件)
YCarousel: null,
YBoxCarousel: null,
YBoxScroller: null,
YBoxBtnLastGroup: null,
YBoxBtnNextGroup: null,
YBoxLastSample: null,
albumabel: true, // 是否可以之间点图片左右切换(Album的一个功能)
YAlbum: null,
YBoxBtnPrevious: null,
YBoxBtnNext: null,
BTN_DISABLED_CLASS: 'dis',
IMG_BTN_PREVIOUS: 'url(img/last-photo.gif)',
IMG_BTN_NEXT: 'url(img/next-photo.gif)',
init: function(itemClass, itemTag, rootId){
var i, oSelf = this;
this.photos = YAO.getElByClassName(itemClass, itemTag, rootId);
this.length = this.photos.length;
for (i = 0; i < this.length; ++i) {
YAO.on(this.photos[i], 'click', function(index){
return function(event){
var evt = event || window.event;
this.YBoxLastIndex = index;
this.YBoxPhotoDefaultWidth = this.photos[this.YBoxLastIndex].width;
this.YBoxPhotoDefaultHeight = this.photos[this.YBoxLastIndex].height;
this.initComponent();
this.zoom();
YAO.stopEvent(evt);
}
}(i), this.photos[i], oSelf);
}
},
initComponent: function(){
if (!this.YBox) {
this.create();
this.initEvents();
}
else {
this.show();
}
this.currentSample();
},
create: function(){
var D = document, i, oDfBox = D.createDocumentFragment(), oDfTip = D.createDocumentFragment(), docWidth = YAO.getDocumentWidth(), docHeight = YAO.getDocumentHeight(), oSelf = this;
oImage = this.photos[this.YBoxLastIndex];
oDfBox.appendChild(YAO.Builder.Node('div', {
id: 'yl-shardow'
}));
oDfBox.appendChild(YAO.Builder.Node('div', {
id: 'yl-box'
}, [YAO.Builder.Node('div', {
id: 'yl-box-hd'
}, [YAO.Builder.Node('h3', {
id: 'yl-box-tlt'
}, oImage.alt),YAO.Builder.Node('span',{
id: 'yl-box-toolbar'
})]), YAO.Builder.Node('div', {
id: 'yl-box-bd'
}, [YAO.Builder.Node('img', {
src: oImage.src,
alt: oImage.alt,
id: 'yl-photo'
}), YAO.Builder.Node('div', {
id: 'carousel'
},YAO.Builder.Node('div', {
id: 'carousel_container'
}))])]));
D.body.appendChild(oDfBox);
this.YOverlay = YAO.getEl('yl-shardow');
YAO.setStyles(this.YOverlay, {
height: docHeight + 'px'
});
this.YBox = YAO.getEl('yl-box');
this.YBoxHd = YAO.getEl('yl-box-hd');
this.YBoxHdHeight = this.YBoxHd.offsetHeight;
this.YBoxTitle = YAO.getEl('yl-box-tlt');
this.YBoxToolBar = YAO.getEl('yl-box-toolbar');
this.initTools();
this.YBoxBd = YAO.getEl('yl-box-bd');
this.YBoxCarousel = YAO.getEl('carousel');
this.YBoxCarouselCnt = YAO.getEl('carousel_container');
this.YBoxPhoto = YAO.getEl('yl-photo');
this.initPlgins();
oDfTip.appendChild(YAO.Builder.Node('div', {
id: 'yl-tips'
}, [YAO.Builder.Node('em', {
id: 'yl-curIndex'
}, (this.YBoxLastIndex + 1) + ''), ' / ' + this.length + ' pictures']));
this.YBoxCarousel.appendChild(oDfTip);
this.YBoxTips = YAO.getEl('yl-tips');
this.YBoxIndex = YAO.getEl('yl-curIndex');
if (this.carouselable) {
this.YBoxLastSample = this.YCarousel.items[this.YBoxLastIndex];
}
this.isHidden = false;
},
initTools: function(){
var D = document, oDfTools = D.createDocumentFragment();
oImage = this.photos[this.YBoxLastIndex];
if (this.newindowable) {
oDfTools.appendChild(YAO.Builder.Node('a', {
id: 'yl-box-newindow',
href: oImage.src,
target: '_blank',
title: '新窗口打开'
}, '新窗口打开'));
}
if (this.maximizable) {
oDfTools.appendChild(YAO.Builder.Node('a', {
id: 'yl-box-adjust',
className: 'imgadjust',
href: '#adjust',
title: '显示实际尺寸'
}, '显示实际尺寸'));
}
if (this.closeable) {
oDfTools.appendChild(YAO.Builder.Node('a', {
id: 'yl-box-closebar',
className: 'imgclose',
href: '#close',
title: '关闭窗口'
}, '关闭窗口'));
}
this.YBoxToolBar.appendChild(oDfTools);
this.YBoxNewWinBar = YAO.getEl('yl-box-newindow');
this.YBoxMaximizeBar = YAO.getEl('yl-box-adjust');
this.YBoxCloseBar = YAO.getEl('yl-box-closebar');
},
initPlgins: function(){
var D = document, oSelf = this, oCConfig = {}, oAConfig = {}, i, oDfSamples = D.createDocumentFragment(), oDfBtnsGroups = D.createDocumentFragment(), oDfBtnsPhoto = D.createDocumentFragment();
if (this.carouselable) {
this.YBoxCarouselCnt.appendChild(YAO.Builder.Node('ul', {
id: 'samples_list'
}));
this.YBoxScroller = YAO.getEl('samples_list');
for (i = 0; i < this.length; ++i) {
oDfSamples.appendChild(YAO.Builder.Node('li', {
className: i === oSelf.YLastIndex ? 'current' : ''
}, YAO.Builder.Node('a', {
href: oSelf.photos[i].src,
title: oSelf.photos[i].alt,
target: 'blank'
}, YAO.Builder.Node('img', {
src: oSelf.photos[i].src,
alt: oSelf.photos[i].alt
}))));
}
this.YBoxScroller.appendChild(oDfSamples);
oDfBtnsGroups.appendChild(YAO.Builder.Node('div', {
id: 'carousel_btn_lastgroup'
}, YAO.Builder.Node('a', {
href: '#lastgroup',
title: '上一组'
}, '上一组')));
oDfBtnsGroups.appendChild(YAO.Builder.Node('div', {
id: 'carousel_btn_nextgroup'
}, YAO.Builder.Node('a', {
href: '#nextgroup',
title: '下一组'
}, '下一组')));
this.YBoxCarousel.appendChild(oDfBtnsGroups);
this.YBoxBtnLastGroup = YAO.getEl('carousel_btn_lastgroup');
this.YBoxBtnNextGroup = YAO.getEl('carousel_btn_nextgroup');
oCConfig = {
btnPrevious: oSelf.YBoxBtnLastGroup,
Container: oSelf.YBoxCarouselCnt,
Scroller: oSelf.YBoxScroller,
btnNext: oSelf.YBoxBtnNextGroup,
stepWidth: 100,
items: 'li'
};
this.YCarousel = new YAO.Carousel(oCConfig);
}
if (this.albumabel) {
oDfBtnsPhoto.appendChild(YAO.Builder.Node('a', {
id: 'carousel_previous_photo',
className: 'previous',
href: (oSelf.YLastIndex - 1 > 0) ? oSelf.photos[oSelf.YLastIndex - 1].src : oSelf.photos[0].src,
title: '上一张',
target: '_blank'
}, '上一张'));
oDfBtnsPhoto.appendChild(YAO.Builder.Node('a', {
id: 'carousel_next_photo',
className: 'next',
href: (oSelf.YLastIndex + 1 < oSelf.length - 1) ? oSelf.photos[oSelf.YLastIndex + 1].src : oSelf.photos[oSelf.length - 1].src,
title: '下一张',
target: '_blank'
}, '下一张'));
this.YBoxBd.appendChild(oDfBtnsPhoto);
this.YBoxBtnPrevious = YAO.getEl('carousel_previous_photo');
this.YBoxBtnNext = YAO.getEl('carousel_next_photo');
}
},
show: function(){
var oImage = this.photos[this.YBoxLastIndex];
if (this.YOverlay && this.YBox && this.isHidden) {
this.YBoxTitle.innerHTML = oImage.alt;
this.YBoxNewWinBar.href = oImage.src;
YAO.Builder.Attributes(this.YBoxPhoto, {
src: oImage.src,
alt: oImage.alt
});
this.YBoxIndex.innerHTML = (this.YBoxLastIndex + 1);
YAO.setStyle(this.YOverlay, 'display', 'block');
YAO.setStyle(this.YBox, 'display', 'block');
this.isHidden = false;
}
},
initBtns: function(){
var oSelf = this;
if (this.albumabel) {
if (YAO.ua.ie) {
YAO.setStyle(this.YBoxBtnPrevious, 'backgroundImage', oSelf.IMG_BTN_PREVIOUS);
YAO.setStyle(this.YBoxBtnNext, 'backgroundImage', oSelf.IMG_BTN_NEXT);
}
if (this.YBoxLastIndex === 0) {
YAO.addClass(this.YBoxBtnPrevious, this.BTN_DISABLED_CLASS);
if (YAO.ua.ie) {
YAO.setStyle(this.YBoxBtnPrevious, 'backgroundImage', 'none');
}
}
if (this.YBoxLastIndex === (this.length - 1)) {
YAO.addClass(this.YBoxBtnNext, this.BTN_DISABLED_CLASS);
if (YAO.ua.ie) {
YAO.setStyle(this.YBoxBtnNext, 'backgroundImage', 'none');
}
}
}
},
initEvents: function(){
var i;
if (this.maximizable) {
YAO.on(this.YBoxHd, 'dblclick', this.toggleMaximize, this.YBoxHd, this); // 当可伸缩时,双击标题栏,可以伸缩窗口,现在更想window的窗口了!
YAO.on(this.YBoxMaximizeBar, 'click', this.toggleMaximize, this.YBoxMaximizeBar, this);
}
if (this.closeable) {
YAO.on(this.YBoxCloseBar, 'click', this.close, this.YBoxCloseBar, this);
}
if (this.carouselable) {
for (i = 0; i < this.length; ++i) {
YAO.on(this.YCarousel.items[i], 'click', function(index){
return function(event){
var evt = event || window.event;
this.YBoxLastIndex = index;
this.btnsEnabled();
this.changePhoto();
YAO.stopEvent(evt);
}
}(i), this.YCarousel.items[i], this);
}
YAO.on(this.YBoxTips, 'click', this.showCarousel, this.YBoxTips, this);
}
if(this.albumabel){
YAO.on(this.YBoxBtnPrevious, 'click', this.previousPhoto, this.YBoxBtnPrevious, this);
YAO.on(this.YBoxBtnNext, 'click', this.nextPhoto, this.YBoxBtnNext, this);
}
YAO.on(window, 'scroll', this.fixPosition, window, this);
YAO.on(window, 'resize', this.fixPosition, window, this);
},
close: function(event){
var evt = event || window.event;
if (this.YOverlay && this.YBox && !this.isHidden) {
YAO.setStyle(this.YOverlay, 'display', 'none');
YAO.setStyle(this.YBox, 'display', 'none');
this.minimize();
this.isHidden = true;
this.YBoxLastIndex = 0;
}
YAO.stopEvent(evt);
},
zoom: function(){
var percent = this.YBoxPhotoDefaultWidth / this.YBoxPhotoDefaultHeight, height = this.YBoxDefaultWidth / percent;
this.YBoxDefaultHeight = height + this.YBoxHdHeight;
this.YBoxBDefaultHeight = height;
if (this.YBoxPhotoDefaultWidth > this.YBoxDefaultWidth) {
this.minimize();
}
else {
this.restore();
}
this.scrollCarousel();
this.initBtns();
this.fixPosition();
},
minimize: function(){
var oSelf = this;
YAO.setStyles(this.YBoxPhoto, {
width: oSelf.YBoxDefaultWidth + 'px',
height: oSelf.YBoxDefaultHeight + 'px'
});
YAO.setStyles(this.YBoxBd, {
width: oSelf.YBoxDefaultWidth + 'px',
height: oSelf.YBoxBDefaultHeight + 'px'
});
YAO.setStyles(this.YBox, {
width: oSelf.YBoxDefaultWidth + 'px',
height: oSelf.YBoxDefaultHeight + 'px'
});
if (this.YBoxMaximizeBar) {
this.YBoxMaximizeBar.title = '显示实际尺寸';
}
if (YAO.ua.ie && this.albumable) {
YAO.setStyle(this.YBoxBtnPrevious, 'height', (this.YBoxDefaultHeight + 'px'));
YAO.setStyle(this.YBoxBtnNext, 'height', (this.YBoxDefaultHeight + 'px'));
}
},
restore: function(){
var oSelf = this;
YAO.setStyles(this.YBoxPhoto, {
width: oSelf.YBoxPhotoDefaultWidth + 'px',
height: oSelf.YBoxPhotoDefaultHeight + 'px'
});
YAO.setStyles(this.YBoxBd, {
width: oSelf.YBoxPhotoDefaultWidth + 'px',
height: oSelf.YBoxPhotoDefaultHeight + 'px'
});
YAO.setStyles(this.YBox, {
width: oSelf.YBoxPhotoDefaultWidth + 'px',
height: (oSelf.YBoxPhotoDefaultHeight + oSelf.YBoxHdHeight) + 'px'
});
if (this.YBoxMaximizeBar) {
this.YBoxMaximizeBar.title = '显示缩略图';
}
if (YAO.ua.ie && this.albumable) {
YAO.setStyle(this.YBoxBtnPrevious, 'height', (this.YBoxPhotoDefaultWidth + 'px'));
YAO.setStyle(this.YBoxBtnNext, 'height', (this.YBoxPhotoDefaultHeight + 'px'));
}
},
toggleMaximize: function(event){
var evt = event || window.event;
if (this.YBoxPhotoDefaultWidth > this.YBoxDefaultWidth) {
if (this.YBoxPhoto.width === this.YBoxDefaultWidth) {
this.restore();
}
else {
this.minimize();
}
this.fixPosition();
}
YAO.stopEvent(evt);
},
fixPosition: function(){
var documentWidth = YAO.getDocumentWidth(), documentHeight = YAO.getDocumentHeight(), viewportWidth = YAO.getViewportWidth(), viewportHeight = YAO.getViewportHeight(), xScroll = YAO.getXScroll(), yScroll = YAO.getYScroll(), YBoxWidth = this.YBox.offsetWidth, YBoxHeight = this.YBox.offsetHeight, left = xScroll + ((viewportWidth - YBoxWidth) / 2), top = yScroll + ((viewportHeight - YBoxHeight) / 2);
if (YBoxWidth > viewportWidth) {
if ((YBoxWidth < documentWidth) && ((YBoxWidth + xScroll) < documentWidth)) {
left = xScroll;
}
else {
left = documentWidth - YBoxWidth;
}
}
else {
if (YBoxWidth > documentWidth) {
left = 0;
}
}
if (YBoxHeight > viewportHeight) {
if ((YBoxHeight < documentHeight) && ((YBoxHeight + yScroll) <= documentHeight)) {
top = yScroll;
}
else {
top = documentHeight - YBoxHeight;
}
}
else {
if (YBoxHeight > documentHeight) {
top = 0;
}
}
if (!this.isHidden) {
YAO.setStyles(this.YBox, {
margin: 0,
left: left + 'px',
top: top + 'px'
});
}
},
showCarousel: function(){
var top = parseInt(YAO.getStyle(this.YBoxCarousel, 'top'), 10);
if (top === -120) {
YAO.moveElement(this.YBoxCarousel, 0, 0, 50);
YAO.setStyle(this.YBoxBtnLastGroup, 'display', 'block');
YAO.setStyle(this.YBoxBtnNextGroup, 'display', 'block');
}
else {
YAO.moveElement(this.YBoxCarousel, 0, -120, 50);
YAO.setStyle(this.YBoxBtnLastGroup, 'display', 'none');
YAO.setStyle(this.YBoxBtnNextGroup, 'display', 'none');
}
},
currentSample: function(){
var curSample = null;
if (this.carouselable) {
curSample = this.YCarousel.items[this.YBoxLastIndex];
if (curSample !== this.YBoxLastSample) {
YAO.removeClass(this.YBoxLastSample, 'current');
}
YAO.addClass(curSample, 'current');
this.YBoxLastSample = curSample;
}
},
scrollCarousel: function(){
if (this.carouselable) {
var curScreen = Math.ceil(((this.YBoxLastIndex + 1) * this.YCarousel.itemWidth) / this.YCarousel.stepWidth) - 1;
if (curScreen != this.YCarousel.movedNum) {
this.YCarousel.scroll(curScreen);
this.YCarousel.movedNum = curScreen;
if (this.YCarousel.movedNum !== 0 && YAO.hasClass(this.YCarousel.lnkBtnPrevious, this.BTN_DISABLED_CLASS)) {
YAO.removeClass(this.YCarousel.lnkBtnPrevious, this.BTN_DISABLED_CLASS);
}
else {
if (this.YCarousel.movedNum === 0) {
YAO.addClass(this.YCarousel.lnkBtnPrevious, this.BTN_DISABLED_CLASS);
}
}
if (this.YCarousel.movedNum !== this.YCarousel.maxMovedNum && YAO.hasClass(this.YCarousel.lnkBtnNext, this.BTN_DISABLED_CLASS)) {
YAO.removeClass(this.YCarousel.lnkBtnNext, this.BTN_DISABLED_CLASS);
}
else {
if (this.YCarousel.movedNum === this.YCarousel.maxMovedNum) {
YAO.addClass(this.YCarousel.lnkBtnNext, this.BTN_DISABLED_CLASS);
}
}
}
}
},
btnsEnabled: function(){
if (this.albumabel) {
if (this.YBoxLastIndex !== 0) {
if (YAO.hasClass(this.YBoxBtnPrevious, this.BTN_DISABLED_CLASS)) {
YAO.removeClass(this.YBoxBtnPrevious, this.BTN_DISABLED_CLASS);
}
if (YAO.ua.ie) {
YAO.setStyle(this.YBoxBtnPrevious, 'backgroundImage', this.IMG_BTN_PREVIOUS);
}
this.YBoxBtnPrevious.href = this.photos[this.YBoxLastIndex - 1].src;
}
else {
if (this.YBoxLastIndex === 0) {
YAO.addClass(this.YBoxBtnPrevious, this.BTN_DISABLED_CLASS);
if (YAO.ua.ie) {
YAO.setStyle(this.YBoxBtnPrevious, 'backgroundImage', 'none');
}
this.YBoxBtnPrevious.href = this.photos[this.YBoxLastIndex].src;
}
}
if (this.YBoxLastIndex !== (this.length - 1)) {
if (YAO.hasClass(this.YBoxBtnNext, this.BTN_DISABLED_CLASS)) {
YAO.removeClass(this.YBoxBtnNext, this.BTN_DISABLED_CLASS);
}
if (YAO.ua.ie) {
YAO.setStyle(this.YBoxBtnNext, 'backgroundImage', this.IMG_BTN_NEXT);
}
this.YBoxBtnNext.href = this.photos[this.YBoxLastIndex + 1].src;
}
else {
if (this.YBoxLastIndex === (this.length - 1)) {
YAO.addClass(this.YBoxBtnNext, this.BTN_DISABLED_CLASS);
if (YAO.ua.ie) {
YAO.setStyle(this.YBoxBtnNext, 'backgroundImage', 'none');
}
this.YBoxBtnNext.href = this.photos[this.YBoxLastIndex].src;
}
}
}
},
previousPhoto: function(event){
var evt = event || window.event;
this.YBoxLastIndex -= 1;
if (YAO.hasClass(this.YBoxBtnNext, this.BTN_DISABLED_CLASS)) {
YAO.removeClass(this.YBoxBtnNext, this.BTN_DISABLED_CLASS);
}
if (this.YBoxLastIndex >= 1) {
this.YBoxBtnPrevious.href = this.photos[this.YBoxLastIndex - 1].src;
}
if (this.YBoxLastIndex < 0) {
this.YBoxLastIndex = 0;
YAO.addClass(this.YBoxBtnPrevious, this.BTN_DISABLED_CLASS);
this.YBoxBtnPrevious.href = this.photos[this.YBoxLastIndex].src;
}
this.YBoxBtnNext.href = this.photos[this.YBoxLastIndex + 1].src;
this.changePhoto();
YAO.stopEvent(evt);
},
nextPhoto: function(event){
var evt = event || window.event;
this.YBoxLastIndex += 1;
if (YAO.hasClass(this.YBoxBtnPrevious, this.BTN_DISABLED_CLASS)) {
YAO.removeClass(this.YBoxBtnPrevious, this.BTN_DISABLED_CLASS);
}
if (this.YBoxLastIndex <= (this.length - 2)) {
this.YBoxBtnNext.href = this.photos[this.YBoxLastIndex + 1].src;
}
if (this.YBoxLastIndex > (this.length - 1)) {
this.YBoxLastIndex = this.length - 1;
YAO.addClass(this.YBoxBtnNext, this.BTN_DISABLED_CLASS);
this.YBoxBtnNext.href = this.photos[this.YBoxLastIndex].src;
}
this.YBoxBtnPrevious.href = this.photos[this.YBoxLastIndex-1].src;
this.changePhoto();
YAO.stopEvent(evt);
},
changePhoto: function(){
this.YBoxPhotoDefaultWidth = this.photos[this.YBoxLastIndex].width;
this.YBoxPhotoDefaultHeight = this.photos[this.YBoxLastIndex].height;
this.YBoxTitle.innerHTML = this.photos[this.YBoxLastIndex].alt;
this.YBoxIndex.innerHTML = (this.YBoxLastIndex + 1);
this.YBoxPhoto.src = this.photos[this.YBoxLastIndex].src;
this.YBoxPhoto.alt = this.photos[this.YBoxLastIndex].alt;
if (this.YBoxNewWinBar) {
this.YBoxNewWinBar.href = this.photos[this.YBoxLastIndex].src;
}
this.currentSample();
this.scrollCarousel();
this.zoom();
}
};
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