/*
Milkbox - required: mootools.js v1.2 core + more: Assets
v1.3.1
- feature: hide milkbox links hover default firefox tooltips
- feature: hide select and textarea tags while playing
- fix: you can use milkbox with image links that contains url variables (ex. image.jpg?id=77&lang=ita)
- fix: a little preload problem when using 2-image galleries
by Luca Reghellin (http://www.reghellin.com) July 2008, MIT-style license.
Inspiration from Slimbox by Christophe Beyls (http://www.digitalia.be)
and from THE VERY FIRST MAN ON THE MOON: Lokesh Dhakar (http://www.lokeshdhakar.com/projects/lightbox2/)
AND OF COURSE, SPECIAL THANKS TO THE MOOTOOLS DEVELOPERS
*/
var Milkbox = new Class({
Implements:Options,
options:{//set all the options here
overlayOpacity:0.7,
topPosition:80,
initialWidth:250,
initialHeight:250,
resizeDuration:500,
resizeTransition:'sine:in:out',/*function (ex. Transitions.Sine.easeIn) or string (ex. 'quint:out')*/
hoverBackgroundPosition:'0 -23px',
autoPlay:false,
autoPlayDelay:7,
removeTitle:true
},
initialize: function(options){
this.setOptions(options);
this.galleries = [];
this.currentImage = null;
this.currentIndex = null;
this.currentGallery = null;
this.specialDescription = null;//for showThisImage
this.activated = false;//used in showThisImage
this.mode = null;//'singleImage','imageGallery','showThisImage'
this.closed = true;
this.busy = true;//to control keyboard and autoplay events
this.intObj = null;
this.formtags = null;
this.loadedImages = [];//to check the preloaded images
this.prepareGalleries();
//if no galleries, stop here and prevent extra memory usage.
//so you can keep milkbox in every page of a site.
if(this.galleries.length == 0){ return; };
this.initMilkbox();
},//end init
initMilkbox:function(){
this.prepareHTML();
this.prepareEffects();
this.prepareEvents();
this.activated = true;
this.formtags = $$('select','textarea');
},
//runs only 1 time per gallery
openMilkbox:function(gallery,index){
if(this.formtags.length != 0){ this.formtags.setStyle('display','none') };
this.overlay.setStyles({ 'top': -$(window).getScroll().y,'height':$(window).getScrollSize().y+$(window).getScroll().y });
this.center.addClass('mbLoading');
this.center.setStyle('top',$(window).getScroll().y+this.options.topPosition);
this.currentGallery = gallery;
this.currentIndex = index;
this.overlay.tween('opacity',this.options.overlayOpacity);//onComplete: center.tween opacity
if(gallery.length == 1){
this.mode = 'singleImage';
this.loadImages(gallery[index].href);
} else {
this.mode = 'imageGallery';
var images = gallery.map(function(item){ return item.href; });
$$(this.prev, this.next, this.count).setStyles({'display':'block'});
var border = this.center.getStyle('border-right-width').toInt();//border-right is just ok for design purposes..
var navWidth = this.prev.getSize().x+this.next.getSize().x+this.close.getSize().x+border;
this.navigation.setStyle('width',navWidth);
this.description.setStyle('margin-right',navWidth);
var next = (index != images.length-1) ? images[index+1] : images[0];
var prev = (index != 0) ? images[index-1] : images[images.length-1];
var preloads = (prev == next) ? [prev] : [prev,next]; //if gallery.length == 2, then prev == next
this.loadImages(images[index],preloads);
}
this.closed = false;
},
//call with js
showThisImage:function(image,description){
//if init was not done because of the absence of galleries, do it now.
if(!this.activated){ this.initMilkbox(); }
this.mode = 'showThisImage';
this.specialDescription = description;
this.overlay.setStyles({ 'top': -$(window).getScroll().y,'height':$(window).getScrollSize().y+$(window).getScroll().y });
this.center.addClass('mbLoading');
this.center.setStyle('top',$(window).getScroll().y+this.options.topPosition);
this.overlay.tween('opacity',this.options.overlayOpacity);//onComplete: center.tween opacity
this.loadImages(image);
this.closed = false;
},
//see loadImages()
showImage:function(image){
if(this.closed){ return; };//if you close the Milkbox and an onload event is still running
var imageBoxSize = this.image.getSize();
this.image.setStyles({'opacity':0, 'width':'', 'height':''});
var imageSize = new Hash(image.getProperties('width','height')).map(function(item, index){
return item.toInt();
});
var centerSize = new Hash(this.center.getStyles('width','height')).map(function(item, index){
return item.toInt();
});
var targetSize = {};
if(imageSize.width != centerSize.width){
targetSize.width = imageSize.width;
targetSize.marginLeft = -(imageSize.width/2).round();
};
var gap = (imageBoxSize.y > 0) ? centerSize.height - imageBoxSize.y : 0;
var targetHeight = imageSize.height + gap;
targetSize.height = targetHeight;
//so nav doesn't move when you click next/prev
this.image.setStyles({'width':imageSize.width, 'height':imageSize.height})
this.center.removeClass('mbLoading');
this.center.morph(targetSize);//onComplete: show all items
},
loadImages:function(currentImage,preloads){
var loadImage = new Asset.image(currentImage, { onload:function(img){
this.currentImage = img;
if(!this.loadedImages.contains(currentImage)){ this.loadedImages.push(currentImage); };//see next/prev events
$$(this.description,this.navigation).setStyle('visibility','hidden');
this.navigation.setStyle('height','');//reset the height setted in center.morph.onComplete
$$(this.next,this.prev,this.close).setStyle('backgroundPosition','0 0');
this.showImage(this.currentImage);
}.bindWithEvent(this)});
if(preloads && !this.loadedImages.contains(preloads)){
var preloadImages = new Asset.images(preloads, { onComplete:function(img){
preloads.each(function(item){
if(!(this.loadedImages.contains(item))){ this.loadedImages.push(item); }
}.bind(this));
}.bindWithEvent(this)});
};
},
//all the main events
prepareEvents:function(){
//galleries
this.galleries.each(function(gallery){
$$(gallery).addEvent('click',function(e){
var button=($(e.target).match('a')) ? $(e.target) : $(e.target).getParent('a');
e.preventDefault();
if(this.options.autoPlay){
this.autoPlay({ gallery:gallery, index:gallery.indexOf(button) });
}
else{ this.openMilkbox(gallery, gallery.indexOf(button)); }
}.bindWithEvent(this));
},this);
//next, prev, see next_prev_aux()
this.next.addEvent('click',this.next_prev_aux.bindWithEvent(this,'next'));
this.prev.addEvent('click',this.next_prev_aux.bindWithEvent(this,'prev'));
//keyboard next/prev/close
$(window.document).addEvent('keydown',function(e){
if(this.mode != 'imageGallery' || this.busy == true){ return; };
if(e.key == 'right' || e.key == 'space'){ this.next_prev_aux(e,'next'); }
else if(e.key == 'left'){ this.next_prev_aux(e,'prev'); }
else if(e.key == 'esc'){ this.closeMilkbox(); };
}.bindWithEvent(this));
//css hover doesn't work in ie6, so I must do it via js...
$$(this.next,this.prev,this.close).addEvents({
'mouseover':function(e){
var button=($(e.target).match('a')) ? $(e.target) : $(e.target).getParent('a');
button.setStyle('backgroundPosition',this.options.hoverBackgroundPosition);
}.bindWithEvent(this),
'mouseout':function(){ this.setStyle('backgroundPosition','0 0'); }
});
//overlay
this.overlay.get('tween').addEvent('onComplete',function(){
if(this.overlay.getStyle('opacity') == this.options.overlayOpacity){
this.center.tween('opacity',1);
} else if(this.overlay.getStyle('opacity') == 0) {
this.overlay.setStyles({'height':'','top':''});
};
}.bindWithEvent(this));
//center
this.center.get('morph').addEvent('onComplete',function(){
this.image.grab(this.currentImage);
this.image.tween('opacity',1);
var d = (!(this.mode == 'showThisImage')) ? this.currentGallery[this.currentIndex].retrieve('title') : this.specialDescription;
if($chk(d)){ this.description.innerHTML = d; };
if(this.mode == 'imageGallery'){
this.count.appendText((this.currentIndex+1)+' из '+this.currentGallery.length+' на этой странице');
}
var currentCenterHeight = this.center.getStyle('height').toInt();
this.navigation.setStyle('height',this.bottom.getStyle('height').toInt());//to have the right-border height == total bottom height
var bottomSize = this.bottom.getSize().y;
//after the 1st time, currentCenterHeight is always > this.image.getSize().y
var targetOffset = (currentCenterHeight > this.image.getSize().y) ? (this.bottom.getSize().y+this.image.getSize().y)-currentCenterHeight : bottomSize;
this.bottom.setStyle('display','none');//to avoid rendering problems during setFinalHeight
this.center.retrieve('setFinalHeight').start(currentCenterHeight,currentCenterHeight+targetOffset);
/**/
}.bindWithEvent(this));
this.center.retrieve('setFinalHeight').addEvent('onComplete',function(){
this.bottom.setStyles({'visibility':'visible','display':'block'});
$$(this.description,this.navigation).setStyle('visibility','visible');
//reset overlay height based on position and height
var scrollSize = $(window).getScrollSize().y;
var scrollTop = $(window).getScroll().y;
this.overlay.setStyle('height',scrollSize+scrollTop);
this.busy = false;
}.bindWithEvent(this));
//reset overlay height and position onResize
window.addEvent('resize',function(){
if(this.overlay.getStyle('opacity') == 0){ return; };//resize only if visible
var scrollSize = $(window).getScrollSize().y;
var scrollTop = $(window).getScroll().y;
this.overlay.setStyles({ 'height':scrollSize+scrollTop,'top':-scrollTop });
}.bindWithEvent(this))
//close
$$(this.overlay,this.image,this.close).addEvent('click',function(){ this.closeMilkbox(); }.bindWithEvent(this));
},
next_prev_aux:function(e,direction){
if(e){
e.preventDefault();
if(this.intObj){ $clear(this.intObj); this.intObj = null; };
} //if there's no event obj, than this is called by autoPlay()
else{ if(this.busy){ return; } }//stop autoplay()
this.busy = true; //for keyboard and autoplay
var backupIndex = this.currentIndex;
if(direction == "next"){
var i= (this.currentIndex != this.currentGallery.length-1) ? this.currentIndex += 1 : this.currentIndex = 0;
var _i= (this.currentIndex != this.currentGallery.length-1) ? this.currentIndex + 1 : 0;
} else {
var i= (this.currentIndex != 0) ? this.currentIndex -= 1 : this.currentIndex = this.currentGallery.length-1;
var _i= (this.currentIndex != 0) ? this.currentIndex - 1 : this.currentGallery.length-1;
};
this.image.empty();
this.description.empty();
this.count.empty();
if(!this.loadedImages.contains(this.currentGallery[i].href)){
this.center.addClass('mbLoading');
};
this.loadImages(this.currentGallery[i].href,[this.currentGallery[_i].href]);
},
autoPlay:function(obj){//obj: gallery, index, delay (in seconds)
var g = (obj && obj.gallery && ($type(obj.gallery) == 'array')) ? obj.gallery : Milkbox.galleries[0];
var i = (obj && obj.index && ($type(obj.index) == 'number')) ? obj.index : 0;
var d = (obj && obj.delay && ($type(obj.delay) == 'number')) ? obj.delay*1000 : this.options.autoPlayDelay*1000;
if(d < this.options.resizeDuration*2){ d = this.options.resizeDuration*2 };
Milkbox.openMilkbox(g,i);
if(this.mode != 'imageGallery'){ return; };
this.intObj = this.next_prev_aux.periodical(d,this,[null,'next']);
},
closeMilkbox:function(){
this.cancelAllEffects();
if(this.intObj){ $clear(this.intObj); };
this.currentImage = null;
this.currentIndex = null;
this.currentGallery = null;
$$(this.prev, this.next, this.count).setStyle('display','none');
var border = this.center.getStyle('border-right-width').toInt();
var navWidth = this.close.getSize().x+border;
this.navigation.setStyles({'width':navWidth,'height':'','visibility':'hidden'});
this.description.setStyle('margin-right',navWidth);
this.description.empty();
this.bottom.setStyles({'visibility':'hidden','display':''});
this.image.setStyles({'opacity':0, 'width':'', 'height':''});
this.image.empty();
this.count.empty();
this.center.setStyles({'opacity':0,'width':this.options.initialWidth,'height':this.options.initialHeight,'marginLeft':-(this.options.initialWidth/2)});
this.overlay.tween('opacity',0);//see onComplete in prepareEvents()
if(this.formtags.length != 0){ this.formtags.setStyle('display','inline') };
this.mode = null;
this.closed = true;
},
cancelAllEffects:function(){
this.overlay.get('tween').cancel();
this.center.get('morph').cancel();
this.center.get('tween').cancel();
this.center.retrieve('setFinalHeight').cancel();
this.image.get('tween').cancel();
},
prepareEffects:function(){
this.overlay.set('tween',{ duration:'short',link:'cancel' });
this.center.set('tween',{ duration:'short',link:'chain' });
this.center.set('morph',{ duration:this.options.resizeDuration,link:'chain',transition:this.options.resizeTransition });
this.center.store('setFinalHeight',new Fx.Tween(this.center,{property:'height',duration:'short'}));
this.image.set('tween',{ link:'chain' });
},
prepareGalleries:function(){
var families = [];
var milkbox_a = [];
$$('a').each(function(a){
//test 'milkbox' and link extension, and collect all milkbox links
if(a.rel && a.rel.test(/^milkbox/i) && a.href.split('?')[0].test(/\.(gif|jpg|png)$/i)){
if(a.rel.length>7 && !families.contains(a.rel)){ families.push(a.rel); };
milkbox_a.push(a);
}
},this);
//console.log(milkbox_a)
//create an array of arrays with all galleries
milkbox_a.each(function(a){
$(a).store('href',a.href);
$(a).store('rel',a.rel);
$(a).store('title',a.title);
if(this.options.removeTitle){ $(a).removeProperty('title'); }
if(a.rel.length > 7){
families.each(function(f,i){
if(a.rel == f){
if(!this.galleries[i]){ this.galleries[i] = [] };
this.galleries[i].push($(a));
};
},this);
} else { this.galleries.push([$(a)]); };
},this);
//console.log(this.galleries)
},
prepareHTML:function(){
this.overlay = new Element('div', { 'id':'mbOverlay','styles':{ 'opacity':'0','visibility':'visible' }}).inject($(document.body));
this.center = new Element('div', {'id':'mbCenter', 'styles':{'width':this.options.initialWidth,'height':this.options.initialHeight,'marginLeft':-(this.options.initialWidth/2),'opacity':0}}).inject($(document.body));
this.image = new Element('div', {'id':'mbImage'}).inject(this.center);
this.bottom = new Element('div',{'id':'mbBottom'}).inject(this.center).setStyle('visibility','hidden');
this.navigation = new Element('div',{'id':'mbNavigation'}).setStyle('visibility','hidden');
this.description = new Element('div',{'id':'mbDescription'}).setStyle('visibility','hidden');
this.bottom.adopt(this.navigation, this.description, new Element('div',{'class':'clear'}));
this.close = new Element('a',{'id':'mbCloseLink'});
this.next = new Element('a',{'id':'mbNextLink'});
this.prev = new Element('a',{'id':'mbPrevLink'});
this.count = new Element('span',{'id':'mbCount'});
$$(this.next, this.prev, this.count).setStyle('display','none');
this.navigation.adopt(this.close, this.next, this.prev,new Element('div',{'class':'clear'}), this.count);
}
});//END MILKBOX;
window.addEvent('domready', function(){
Milkbox = new Milkbox();
});