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;(function(){
if (window.BX.CImageView)
return;
/******* image viewer ********/
// show single image - not recommended
BX.viewImage = function(img_src, w, h, title, params)
{
params = params || {};
params.cycle = false;
params.list = [{image:img_src, height: h, width: w, title: title}];
var obView = new BX.CImageView(params);
obView.show();
return obView;
}
// bind image viewer on concrete node
BX.viewImageBind = function(div, params, isTarget, groupBy)
{
var obImageView = new BX.CImageView(params);
if(!isTarget)
isTarget = {tag:'IMG'};
BX.ready(function(){
_viewImageBind(div, isTarget, groupBy, obImageView);
});
return obImageView;
};
function _viewImageBind(div, isTarget, groupBy, obImageView)
{
var div = BX(div);
if (!!div)
{
BX.bindDelegate(div, 'click', isTarget, function(e)
{
var parent = div;
if (!!groupBy)
{
parent = BX.findParent(this, groupBy, div)||parent;
}
var imgNodeList = BX.findChildren(parent, isTarget, true),
imgList = [],
currentImage = false;
for(var i=0; i<imgNodeList.length; i++)
{
var imgData = {
thumb: imgNodeList[i].src,
image: imgNodeList[i].getAttribute('data-bx-image'),
width: imgNodeList[i].getAttribute('data-bx-width'),
height: imgNodeList[i].getAttribute('data-bx-height'),
full: imgNodeList[i].getAttribute('data-bx-full'),
full_width: imgNodeList[i].getAttribute('data-bx-full-width'),
full_height: imgNodeList[i].getAttribute('data-bx-full-height'),
full_size: imgNodeList[i].getAttribute('data-bx-full-size'),
title: imgNodeList[i].getAttribute('data-bx-title')||imgNodeList[i].alt||imgNodeList[i].title
};
var bHasLink = imgNodeList[i].parentNode.tagName.toUpperCase() == 'A' && !!imgNodeList[i].parentNode.href;
if(bHasLink)
{
imgData.image = imgData.image || imgNodeList[i].parentNode.href;
imgData.title = imgData.title || imgNodeList[i].parentNode.title;
imgData.width = imgNodeList[i].parentNode.getAttribute('data-bx-width');
imgData.height = imgNodeList[i].parentNode.getAttribute('data-bx-height');
imgData.full = imgData.full || imgNodeList[i].parentNode.getAttribute('data-bx-full');
if(!!imgData.full)
{
imgData.full_width = imgData.full_width || imgNodeList[i].parentNode.getAttribute('data-bx-full-width');
imgData.full_height = imgData.full_height || imgNodeList[i].parentNode.getAttribute('data-bx-full-height');
imgData.full_size = imgData.full_size || imgNodeList[i].parentNode.getAttribute('data-bx-full-size');
}
imgData.title = imgData.title||imgNodeList[i].parentNode.getAttribute('data-bx-title')||imgNodeList[i].parentNode.alt||imgNodeList[i].parentNode.title;
}
imgData.image = imgData.image || imgData.thumb;
if(imgNodeList[i] == this)
currentImage = imgData.image
if (!!imgData.image)
imgList.push(imgData);
}
var bLink = this.parentNode.tagName.toUpperCase() == 'A' && !!this.parentNode.href,
bExtLink = bLink && !!currentImage && this.parentNode.href != currentImage;
if(!bExtLink)
{
obImageView.setList(imgList);
obImageView.show(this.getAttribute('data-bx-image')||this.src);
if(bLink)
return BX.PreventDefault(e);
}
});
}
};
/******* image viewer main class ********/
/*
params: {
list: [], // starting list of images
cycle: true, // whether to cycle images list - go to first after last
resize: 'WH', //'W' - resize image to fit width, 'H' - resize image to fit height, 'WH' - W&H , ''||false => show original image size without resizing. RECOMMENDATION: set lockScroll: true for resize: W or resize: false;
resizeToggle: false,
showTitle: true, // whether to show image title
preload: 1, // number of list images to be preloaded (in both sides. default - 1 next and 1 previous)
minMargin: 20, // - minimum space between viewer and screen edge.
minPadding: 12, // - minimum space between viewer and image edge.
lockScroll: false, // whether to lock page scroll.
keyMap: {} // map for hotkeys. set to false to disable hotkeys. use BX.CImageView.defaultSettings.keyMap as default
}
elements: [{
thumb: '/images/image.jpg',
image: '/images/thumb.jpg',
title: 'This is my image!',
height: int
width: int
}]
*/
BX.CImageView = function(params)
{
this.params = BX.clone(BX.CImageView.defaultSettings);
for(var i in params)
{
this.params[i] = params[i];
}
this.DIV = null;
this.OVERLAY = null;
this.IMAGE_WRAP = null;
this.IMAGE = BX.create('IMG', {
props: {
className: 'bx-images-viewer-image'
},
events: {
load: BX.proxy(this.adjustPos, this),
click: BX.proxy(this.next, this)
}
});
this.list = this.params.list;
this.list_preload = [];
this._current = 0;
this.bVisible = false;
};
BX.CImageView.defaultSettings = {
list: [],
cycle: true, // whether to cycle images list - go to first after last
resize: 'WH', //'W' - resize image to fit width, 'H' - resize image to fit height, 'WH' - W&H , ''||false => show original image size without resizing
resizeToggle: false,
showTitle: true, // whether to show image title
preload: 1, // number of list images to be preloaded
minMargin: 20, //minimal margin
minPadding: 12, // minimal padding
lockScroll: false,
keyMap: {
27: 'close', // esc
33: 'prev', // pgup
37: 'prev', // left
38: 'prev', // up
34: 'next', // pgdn
39: 'next', // right
40: 'next', // down
32: 'next' // space
}
};
BX.CImageView.prototype._create = function()
{
if (!this.DIV)
{
var specTag = BX.browser.IsIE() && !BX.browser.IsDoctype() ? 'A' : 'SPAN',
specHref = specTag == 'A' ? 'javascript:void(0)' : null;
this.OVERLAY = document.body.appendChild(BX.create('DIV', {
props: {className: 'bx-images-viewer-overlay'},
events: {click: BX.proxy(this._hide, this)}
}));
this.DIV = this.OVERLAY.appendChild(BX.create('DIV', {
props: {className: 'bx-images-viewer-wrap-outer'},
events: {
click: BX.eventCancelBubble
},
children: [
(this.PREV_LINK = BX.create(specTag, {
props: {
className: 'bx-images-viewer-prev-outer',
href: specHref
},
events: {
click: BX.proxy(this.prev, this)
},
html: '<span class="bx-images-viewer-prev"></span>'
})),
(this.NEXT_LINK = BX.create(specTag, {
props: {
className: 'bx-images-viewer-next-outer',
href: specHref
},
events: {
click: BX.proxy(this.next, this)
},
html: '<span class="bx-images-viewer-next"></span>'
})),
(this.IMAGE_TITLE = BX.create('DIV', {
style: {bottom: '0'},
props: {className: 'bx-images-viewer-title'}
})),
BX.create('DIV', {
props: {className: 'bx-images-viewer-wrap-inner'},
style: {padding: this.params.minPadding + 'px'},
children: [
(this.IMAGE_WRAP = BX.create('DIV', {
props: {className: 'bx-images-viewer-wrap'},
children: [
this.IMAGE
]
}))
]
}),
BX.create(specTag, {
props: {
className: 'bx-images-viewer-close',
href: specHref
},
events: {click: BX.proxy(this._hide, this)},
html: '<span class="bx-images-viewer-close-inner"></span>'
})
]
}));
if (!!this.params.resizeToggle)
{
this.IMAGE_WRAP.appendChild(BX.create('SPAN', {
props: {className: 'bx-images-viewer-size-toggle'},
style: {
right: this.params.minPadding + 'px',
bottom: this.params.minPadding + 'px'
},
events: {
click: BX.proxy(this._toggle_resize, this)
}
}))
}
}
};
BX.CImageView.prototype._keypress = function(e)
{
var key = (e||window.event).keyCode || (e||window.event).charCode;
if (!!this.params.keyMap && !!this.params.keyMap[key] && !!this[this.params.keyMap[key]])
{
this[this.params.keyMap[key]].apply(this);
return BX.PreventDefault(e);
}
};
BX.CImageView.prototype._toggle_resize = function()
{
var tmp = this.params.resize;
this.params.resize = this.params.resizeToggle;
this.params.resizeToggle = tmp;
if (this.params.resize != 'WH')
{
this.params.lockScroll = true;
this._lock_scroll();
}
else
{
this.params.lockScroll = false;
this._unlock_scroll();
}
this.adjustSize();
this.adjustPos();
};
BX.CImageView.prototype.adjustPos = function()
{
if (this.list[this._current].height > 0 && this.list[this._current].width > 0)
{
this._adjustPosByImg();
}
else
{
if (!this.IMAGE_WRAP.style.height)
this.IMAGE_WRAP.style.height = "100px";
if (!this.IMAGE_WRAP.style.width)
this.IMAGE_WRAP.style.width = "100px";
setTimeout(BX.proxy(this._adjustPosByImg, this), 250);
}
};
BX.CImageView.prototype._adjustPosByImg = function()
{
if (this.bVisible)
{
var wndSize = BX.GetWindowSize(),
top = parseInt((wndSize.innerHeight - parseInt(this.IMAGE_WRAP.style.height) - 2 * this.params.minPadding)/2),
left = parseInt((wndSize.innerWidth - parseInt(this.IMAGE_WRAP.style.width) - 2 * this.params.minPadding)/2);
if (!this.params.lockScroll && wndSize.innerWidth < wndSize.scrollHeight)
left -= 20;
if (top < this.params.minMargin)
top = this.params.minMargin;
if (left < this.params.minMargin + Math.min(70, this.PREV_LINK.offsetWidth))
left = this.params.minMargin + Math.min(70, this.PREV_LINK.offsetWidth);
if (this.params.showTitle && !!this.list[this._current].title)
{
top -= 20;
}
this.DIV.style.top = top + 'px';
this.DIV.style.left = left + 'px';
}
};
BX.CImageView.prototype.adjustSize = function()
{
var wndSize = BX.GetWindowSize(), img = this.list[this._current];
if (!!img.height && !!img.width)
{
if (!this.params.lockScroll && wndSize.innerWidth < wndSize.scrollHeight)
wndSize.innerWidth -= 20;
wndSize.innerWidth -= this.params.minMargin * 2 + this.params.minPadding * 2 + Math.min(140, this.PREV_LINK.offsetWidth + this.NEXT_LINK.offsetWidth);
wndSize.innerHeight -= this.params.minMargin * 2 + this.params.minPadding * 2;
if (this.params.showTitle && !!this.list[this._current].title)
{
wndSize.innerHeight -= 40;
}
var height = img.height,
width = img.width,
ratio = [1];
if (this.params.resize)
{
if(this.params.resize.indexOf('W') >= 0)
ratio.push(wndSize.innerWidth/width);
if (this.params.resize.indexOf('H') >= 0)
ratio.push(wndSize.innerHeight/height);
}
ratio = Math.min.apply(window, ratio);
height *= ratio;
width *= ratio;
this.IMAGE_WRAP.style.height = parseInt(height) + 'px';
this.IMAGE_WRAP.style.width = parseInt(width) + 'px';
if (BX.browser.IsIE())
{
var h = parseInt(this.IMAGE_WRAP.style.height) + this.params.minPadding * 2;
this.PREV_LINK.style.height = this.NEXT_LINK.style.height = h + 'px';
this.PREV_LINK.firstChild.style.top = this.NEXT_LINK.firstChild.style.top = parseInt(h/2-20) + 'px';
}
}
};
BX.CImageView.prototype._lock_scroll = function()
{
if (this.params.lockScroll)
BX.addClass(document.body, 'bx-images-viewer-lock-scroll');
};
BX.CImageView.prototype._unlock_scroll = function()
{
if (this.params.lockScroll)
BX.removeClass(document.body, 'bx-images-viewer-lock-scroll');
};
BX.CImageView.prototype._unhide = function()
{
this.bVisible = true;
this.DIV.style.display = 'block';
this.OVERLAY.style.display = 'block';
this.PREV_LINK.style.display = (this.list.length > 1 && (this.params.cycle || this._current > 0)) ? 'block' : 'none';
this.NEXT_LINK.style.display = (this.list.length > 1 && (this.params.cycle || this._current < this.list.length-1)) ? 'block' : 'none';
this.adjustPos();
BX.unbind(document, 'keydown', BX.proxy(this._keypress, this));
BX.unbind(window, 'resize', BX.proxy(this.adjustSize, this));
BX.unbind(window, 'resize', BX.proxy(this.adjustPos, this));
BX.bind(document, 'keydown', BX.proxy(this._keypress, this));
BX.bind(window, 'resize', BX.proxy(this.adjustSize, this));
BX.bind(window, 'resize', BX.proxy(this.adjustPos, this));
this._lock_scroll();
};
BX.CImageView.prototype._hide = function()
{
this.bVisible = false;
this.DIV.style.display = 'none';
this.OVERLAY.style.display = 'none';
BX.unbind(document, 'keydown', BX.proxy(this._keypress, this));
BX.unbind(window, 'resize', BX.proxy(this.adjustSize, this));
BX.unbind(window, 'resize', BX.proxy(this.adjustPos, this));
this._unlock_scroll();
BX.onCustomEvent(this, 'onImageViewClose', [this.list[this._current]]);
};
BX.CImageView.prototype.add = function(data)
{
this.list.push(data);
};
BX.CImageView.prototype.setList = function(list)
{
this.list = [];
this.list_preload = [];
if (!!list && BX.type.isArray(list))
{
for(var i=0; i<list.length; i++)
{
this.add(list[i]);
}
}
if (this.bVisible)
{
if (this.list.length > 0)
this.show();
else
this.close();
}
};
BX.CImageView.prototype.show = function(img)
{
var _current = this._current;
if (BX.type.isElementNode(img))
img = img.getAttribute('src');
if(typeof(img) == 'object' && (!!img.image || !!img.thumb))
img = (img.image||img.thumb);
if (BX.type.isString(img))
{
for(var i=0; i < this.list.length; i++)
{
if(this.list[i].image == img || this.list[i].thumb == img)
{
_current = i;
break;
}
}
}
img = this.list[_current];
if (!img)
return;
this._current = _current;
this._create();
this.IMAGE.style.opacity = 0;
this.adjustSize();
if (!this.list_preload[this._current])
{
BX.addClass(this.IMAGE_WRAP, 'bx-images-viewer-wrap-loading');
this.list_preload[this._current] = new Image();
this.list_preload[this._current].bxloaded = false;
this.list_preload[this._current].onload = this._get_image_onload();
this.list_preload[this._current].src = img.image;
BX.defer(function(){
if((this.list_preload[this._current].width > 0 || this.list_preload[this._current].height > 0))
{
this.IMAGE.onload = null;
this.IMAGE.style.opacity = 1;
}
}, this)();
}
else if (this.list_preload[this._current].bxloaded)
{
setTimeout(BX.delegate(this.list_preload[this._current].onload, this.list_preload[this._current]), 350);
}
setTimeout(BX.proxy(this._check_title, this), 300);
this._unhide();
BX.onCustomEvent(this, 'onImageViewShow', [img]);
};
BX.CImageView.prototype._check_title = function()
{
this.IMAGE_TITLE.innerHTML = '';
if (this.params.showTitle && this.list[this._current].title || this.list[this._current].full)
{
var height = 0,
bottom = 0,
params = {
style: {
opacity: '1'
},
children: []
};
if(this.params.showTitle && this.list[this._current].title)
{
params.children.push(BX.create('DIV', {props: {className: 'bx-images-viewer-title-item'}, text: this.list[this._current].title}));
height += 35;
bottom += 35;
}
if(this.list[this._current].full)
{
var p = [];
if(this.list[this._current].full_height && this.list[this._current].full_width)
{
p.push(this.list[this._current].full_width+'x'+this.list[this._current].full_height);
}
if(this.list[this._current].full_size)
{
p.push(this.list[this._current].full_size);
}
html = '<a href="'+this.list[this._current].full+'" class="bx-images-viewer-full-link" target="_blank">' + BX.message('JS_CORE_IMAGE_FULL') + (p.length > 0 ? (' ('+p.join(', ')+')') : '') + '</a>';
params.children.push(BX.create('DIV', {props: {className: 'bx-images-viewer-title-item bx-images-viewer-full'}, html: html}));
height += 35;
bottom += 35;
}
params.style.height = height + 'px';
params.style.bottom = -bottom + 'px';
BX.adjust(this.IMAGE_TITLE, params);
}
else
{
this.IMAGE_TITLE.style.opacity = '0';
this.IMAGE_TITLE.style.bottom = '0';
this.IMAGE_TITLE.style.height = '0';
}
}
BX.CImageView.prototype._get_image_onload = function(_current)
{
_current = typeof _current == 'undefined' ? this._current : _current;
return BX.delegate(function(){
BX.proxy_context.bxloaded = true;
if (_current == this._current)
{
var img = this.list[this._current];
BX.removeClass(this.IMAGE_WRAP, 'bx-images-viewer-wrap-loading');
this.IMAGE.onload = function(){
this.onload = null;
this.style.opacity = 1;
};
this.IMAGE.src = BX.proxy_context.src;
if (BX.proxy_context.width)
img.width = BX.proxy_context.width;
if (BX.proxy_context.height)
img.height = BX.proxy_context.height;
this.adjustSize();
this.adjustPos();
BX.defer(this._preload, this)();
}
BX.onCustomEvent(this, 'onImageViewLoad', [this.list[_current], _current == this._current]);
}, this);
}
BX.CImageView.prototype._preload = function()
{
if (this.params.preload > 0)
{
var finish = Math.max(this._current-this.params.preload, this.params.cycle ? -1000 : 0),
start = Math.min(this._current+this.params.preload, this.params.cycle ? this.list.length + 1000 : this.list.length-1);
if (finish < start)
{
for (var i=start; i>=finish; i--)
{
var ix = i;
if (ix < 0)
ix += this.list.length;
else if (ix >= this.list.length)
ix -= this.list.length;
if (!this.list_preload[ix])
{
this.list_preload[ix] = new Image();
this.list_preload[ix].src = this.list[ix].image;
this.list_preload[ix].onload = this._get_image_onload(ix);
}
}
}
}
};
BX.CImageView.prototype.next = function()
{
if (this.list.length > 1)
{
this._current++;
if(this._current >= this.list.length)
{
if(!!this.params.cycle)
this._current = 0;
else
this._current--;
BX.onCustomEvent(this, 'onImageViewFinishList', [this.list[this._current], 1]);
}
this.show();
}
};
BX.CImageView.prototype.prev = function()
{
if (this.list.length > 1)
{
this._current--;
if(this._current < 0)
{
if(!!this.params.cycle)
this._current = this.list.length-1;
else
this._current++;
BX.onCustomEvent(this, 'onImageViewFinishList', [this.list[this._current], -1]);
}
this.show();
}
};
BX.CImageView.prototype.close = function()
{
this._hide();
};
})(window);