first commit

web/common/static/photoswipe/js/desktop-zoom.js

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+/**
+ *
+ * desktop-zoom.js:
+ *
+ * - Binds mousewheel event for paning zoomed image.
+ * - Manages "dragging", "zoomed-in", "zoom-out" classes.
+ *   (which are used for cursors and zoom icon)
+ * - Adds toggleDesktopZoom function.
+ * 
+ */
+
+var _wheelDelta;
+	
+_registerModule('DesktopZoom', {
+
+	publicMethods: {
+
+		initDesktopZoom: function() {
+
+			if(_oldIE) {
+				// no zoom for old IE (<=8)
+				return;
+			}
+
+			if(_likelyTouchDevice) {
+				// if detected hardware touch support, we wait until mouse is used,
+				// and only then apply desktop-zoom features
+				_listen('mouseUsed', function() {
+					self.setupDesktopZoom();
+				});
+			} else {
+				self.setupDesktopZoom(true);
+			}
+
+		},
+
+		setupDesktopZoom: function(onInit) {
+
+			_wheelDelta = {};
+
+			var events = 'wheel mousewheel DOMMouseScroll';
+			
+			_listen('bindEvents', function() {
+				framework.bind(template, events,  self.handleMouseWheel);
+			});
+
+			_listen('unbindEvents', function() {
+				if(_wheelDelta) {
+					framework.unbind(template, events, self.handleMouseWheel);
+				}
+			});
+
+			self.mouseZoomedIn = false;
+
+			var hasDraggingClass,
+				updateZoomable = function() {
+					if(self.mouseZoomedIn) {
+						framework.removeClass(template, 'pswp--zoomed-in');
+						self.mouseZoomedIn = false;
+					}
+					if(_currZoomLevel < 1) {
+						framework.addClass(template, 'pswp--zoom-allowed');
+					} else {
+						framework.removeClass(template, 'pswp--zoom-allowed');
+					}
+					removeDraggingClass();
+				},
+				removeDraggingClass = function() {
+					if(hasDraggingClass) {
+						framework.removeClass(template, 'pswp--dragging');
+						hasDraggingClass = false;
+					}
+				};
+
+			_listen('resize' , updateZoomable);
+			_listen('afterChange' , updateZoomable);
+			_listen('pointerDown', function() {
+				if(self.mouseZoomedIn) {
+					hasDraggingClass = true;
+					framework.addClass(template, 'pswp--dragging');
+				}
+			});
+			_listen('pointerUp', removeDraggingClass);
+
+			if(!onInit) {
+				updateZoomable();
+			}
+			
+		},
+
+		handleMouseWheel: function(e) {
+
+			if(_currZoomLevel <= self.currItem.fitRatio) {
+				if( _options.modal ) {
+
+					if (!_options.closeOnScroll || _numAnimations || _isDragging) {
+						e.preventDefault();
+					} else if(_transformKey && Math.abs(e.deltaY) > 2) {
+						// close PhotoSwipe
+						// if browser supports transforms & scroll changed enough
+						_closedByScroll = true;
+						self.close();
+					}
+
+				}
+				return true;
+			}
+
+			// allow just one event to fire
+			e.stopPropagation();
+
+			// https://developer.mozilla.org/en-US/docs/Web/Events/wheel
+			_wheelDelta.x = 0;
+
+			if('deltaX' in e) {
+				if(e.deltaMode === 1 /* DOM_DELTA_LINE */) {
+					// 18 - average line height
+					_wheelDelta.x = e.deltaX * 18;
+					_wheelDelta.y = e.deltaY * 18;
+				} else {
+					_wheelDelta.x = e.deltaX;
+					_wheelDelta.y = e.deltaY;
+				}
+			} else if('wheelDelta' in e) {
+				if(e.wheelDeltaX) {
+					_wheelDelta.x = -0.16 * e.wheelDeltaX;
+				}
+				if(e.wheelDeltaY) {
+					_wheelDelta.y = -0.16 * e.wheelDeltaY;
+				} else {
+					_wheelDelta.y = -0.16 * e.wheelDelta;
+				}
+			} else if('detail' in e) {
+				_wheelDelta.y = e.detail;
+			} else {
+				return;
+			}
+
+			_calculatePanBounds(_currZoomLevel, true);
+
+			var newPanX = _panOffset.x - _wheelDelta.x,
+				newPanY = _panOffset.y - _wheelDelta.y;
+
+			// only prevent scrolling in nonmodal mode when not at edges
+			if (_options.modal ||
+				(
+				newPanX <= _currPanBounds.min.x && newPanX >= _currPanBounds.max.x &&
+				newPanY <= _currPanBounds.min.y && newPanY >= _currPanBounds.max.y
+				) ) {
+				e.preventDefault();
+			}
+
+			// TODO: use rAF instead of mousewheel?
+			self.panTo(newPanX, newPanY);
+		},
+
+		toggleDesktopZoom: function(centerPoint) {
+			centerPoint = centerPoint || {x:_viewportSize.x/2 + _offset.x, y:_viewportSize.y/2 + _offset.y };
+
+			var doubleTapZoomLevel = _options.getDoubleTapZoom(true, self.currItem);
+			var zoomOut = _currZoomLevel === doubleTapZoomLevel;
+			
+			self.mouseZoomedIn = !zoomOut;
+
+			self.zoomTo(zoomOut ? self.currItem.initialZoomLevel : doubleTapZoomLevel, centerPoint, 333);
+			framework[ (!zoomOut ? 'add' : 'remove') + 'Class'](template, 'pswp--zoomed-in');
+		}
+
+	}
+});

web/common/static/photoswipe/js/framework-bridge.js

@@ -0,0 +1,277 @@
+/**
+ *
+ * Set of generic functions used by gallery.
+ * 
+ * You're free to modify anything here as long as functionality is kept.
+ * 
+ */
+var framework = {
+	features: null,
+	bind: function(target, type, listener, unbind) {
+		var methodName = (unbind ? 'remove' : 'add') + 'EventListener';
+		type = type.split(' ');
+		for(var i = 0; i < type.length; i++) {
+			if(type[i]) {
+				target[methodName]( type[i], listener, false);
+			}
+		}
+	},
+	isArray: function(obj) {
+		return (obj instanceof Array);
+	},
+	createEl: function(classes, tag) {
+		var el = document.createElement(tag || 'div');
+		if(classes) {
+			el.className = classes;
+		}
+		return el;
+	},
+	getScrollY: function() {
+		var yOffset = window.pageYOffset;
+		return yOffset !== undefined ? yOffset : document.documentElement.scrollTop;
+	},
+	unbind: function(target, type, listener) {
+		framework.bind(target,type,listener,true);
+	},
+	removeClass: function(el, className) {
+		var reg = new RegExp('(\\s|^)' + className + '(\\s|$)');
+		el.className = el.className.replace(reg, ' ').replace(/^\s\s*/, '').replace(/\s\s*$/, ''); 
+	},
+	addClass: function(el, className) {
+		if( !framework.hasClass(el,className) ) {
+			el.className += (el.className ? ' ' : '') + className;
+		}
+	},
+	hasClass: function(el, className) {
+		return el.className && new RegExp('(^|\\s)' + className + '(\\s|$)').test(el.className);
+	},
+	getChildByClass: function(parentEl, childClassName) {
+		var node = parentEl.firstChild;
+		while(node) {
+			if( framework.hasClass(node, childClassName) ) {
+				return node;
+			}
+			node = node.nextSibling;
+		}
+	},
+	arraySearch: function(array, value, key) {
+		var i = array.length;
+		while(i--) {
+			if(array[i][key] === value) {
+				return i;
+			} 
+		}
+		return -1;
+	},
+	extend: function(o1, o2, preventOverwrite) {
+		for (var prop in o2) {
+			if (o2.hasOwnProperty(prop)) {
+				if(preventOverwrite && o1.hasOwnProperty(prop)) {
+					continue;
+				}
+				o1[prop] = o2[prop];
+			}
+		}
+	},
+	easing: {
+		sine: {
+			out: function(k) {
+				return Math.sin(k * (Math.PI / 2));
+			},
+			inOut: function(k) {
+				return - (Math.cos(Math.PI * k) - 1) / 2;
+			}
+		},
+		cubic: {
+			out: function(k) {
+				return --k * k * k + 1;
+			}
+		}
+		/*
+			elastic: {
+				out: function ( k ) {
+
+					var s, a = 0.1, p = 0.4;
+					if ( k === 0 ) return 0;
+					if ( k === 1 ) return 1;
+					if ( !a || a < 1 ) { a = 1; s = p / 4; }
+					else s = p * Math.asin( 1 / a ) / ( 2 * Math.PI );
+					return ( a * Math.pow( 2, - 10 * k) * Math.sin( ( k - s ) * ( 2 * Math.PI ) / p ) + 1 );
+
+				},
+			},
+			back: {
+				out: function ( k ) {
+					var s = 1.70158;
+					return --k * k * ( ( s + 1 ) * k + s ) + 1;
+				}
+			}
+		*/
+	},
+
+	/**
+	 * 
+	 * @return {object}
+	 * 
+	 * {
+	 *  raf : request animation frame function
+	 *  caf : cancel animation frame function
+	 *  transfrom : transform property key (with vendor), or null if not supported
+	 *  oldIE : IE8 or below
+	 * }
+	 * 
+	 */
+	detectFeatures: function() {
+		if(framework.features) {
+			return framework.features;
+		}
+		var helperEl = framework.createEl(),
+			helperStyle = helperEl.style,
+			vendor = '',
+			features = {};
+
+		// IE8 and below
+		features.oldIE = document.all && !document.addEventListener;
+
+		features.touch = 'ontouchstart' in window;
+
+		if(window.requestAnimationFrame) {
+			features.raf = window.requestAnimationFrame;
+			features.caf = window.cancelAnimationFrame;
+		}
+
+		features.pointerEvent = !!(window.PointerEvent) || navigator.msPointerEnabled;
+
+		// fix false-positive detection of old Android in new IE
+		// (IE11 ua string contains "Android 4.0")
+		
+		if(!features.pointerEvent) { 
+
+			var ua = navigator.userAgent;
+
+			// Detect if device is iPhone or iPod and if it's older than iOS 8
+			// http://stackoverflow.com/a/14223920
+			// 
+			// This detection is made because of buggy top/bottom toolbars
+			// that don't trigger window.resize event.
+			// For more info refer to _isFixedPosition variable in core.js
+
+			if (/iP(hone|od)/.test(navigator.platform)) {
+				var v = (navigator.appVersion).match(/OS (\d+)_(\d+)_?(\d+)?/);
+				if(v && v.length > 0) {
+					v = parseInt(v[1], 10);
+					if(v >= 1 && v < 8 ) {
+						features.isOldIOSPhone = true;
+					}
+				}
+			}
+
+			// Detect old Android (before KitKat)
+			// due to bugs related to position:fixed
+			// http://stackoverflow.com/questions/7184573/pick-up-the-android-version-in-the-browser-by-javascript
+			
+			var match = ua.match(/Android\s([0-9\.]*)/);
+			var androidversion =  match ? match[1] : 0;
+			androidversion = parseFloat(androidversion);
+			if(androidversion >= 1 ) {
+				if(androidversion < 4.4) {
+					features.isOldAndroid = true; // for fixed position bug & performance
+				}
+				features.androidVersion = androidversion; // for touchend bug
+			}	
+			features.isMobileOpera = /opera mini|opera mobi/i.test(ua);
+
+			// p.s. yes, yes, UA sniffing is bad, propose your solution for above bugs.
+		}
+		
+		var styleChecks = ['transform', 'perspective', 'animationName'],
+			vendors = ['', 'webkit','Moz','ms','O'],
+			styleCheckItem,
+			styleName;
+
+		for(var i = 0; i < 4; i++) {
+			vendor = vendors[i];
+
+			for(var a = 0; a < 3; a++) {
+				styleCheckItem = styleChecks[a];
+
+				// uppercase first letter of property name, if vendor is present
+				styleName = vendor + (vendor ? 
+										styleCheckItem.charAt(0).toUpperCase() + styleCheckItem.slice(1) : 
+										styleCheckItem);
+			
+				if(!features[styleCheckItem] && styleName in helperStyle ) {
+					features[styleCheckItem] = styleName;
+				}
+			}
+
+			if(vendor && !features.raf) {
+				vendor = vendor.toLowerCase();
+				features.raf = window[vendor+'RequestAnimationFrame'];
+				if(features.raf) {
+					features.caf = window[vendor+'CancelAnimationFrame'] || 
+									window[vendor+'CancelRequestAnimationFrame'];
+				}
+			}
+		}
+			
+		if(!features.raf) {
+			var lastTime = 0;
+			features.raf = function(fn) {
+				var currTime = new Date().getTime();
+				var timeToCall = Math.max(0, 16 - (currTime - lastTime));
+				var id = window.setTimeout(function() { fn(currTime + timeToCall); }, timeToCall);
+				lastTime = currTime + timeToCall;
+				return id;
+			};
+			features.caf = function(id) { clearTimeout(id); };
+		}
+
+		// Detect SVG support
+		features.svg = !!document.createElementNS && 
+						!!document.createElementNS('http://www.w3.org/2000/svg', 'svg').createSVGRect;
+
+		framework.features = features;
+
+		return features;
+	}
+};
+
+framework.detectFeatures();
+
+// Override addEventListener for old versions of IE
+if(framework.features.oldIE) {
+
+	framework.bind = function(target, type, listener, unbind) {
+		
+		type = type.split(' ');
+
+		var methodName = (unbind ? 'detach' : 'attach') + 'Event',
+			evName,
+			_handleEv = function() {
+				listener.handleEvent.call(listener);
+			};
+
+		for(var i = 0; i < type.length; i++) {
+			evName = type[i];
+			if(evName) {
+
+				if(typeof listener === 'object' && listener.handleEvent) {
+					if(!unbind) {
+						listener['oldIE' + evName] = _handleEv;
+					} else {
+						if(!listener['oldIE' + evName]) {
+							return false;
+						}
+					}
+
+					target[methodName]( 'on' + evName, listener['oldIE' + evName]);
+				} else {
+					target[methodName]( 'on' + evName, listener);
+				}
+
+			}
+		}
+	};
+	
+}

web/common/static/photoswipe/js/history.js

@@ -0,0 +1,283 @@
+/**
+ *
+ * history.js:
+ *
+ * - Back button to close gallery.
+ * 
+ * - Unique URL for each slide: example.com/&pid=1&gid=3
+ *   (where PID is picture index, and GID and gallery index)
+ *   
+ * - Switch URL when slides change.
+ * 
+ */
+
+
+var _historyDefaultOptions = {
+	history: true,
+	galleryUID: 1
+};
+
+var _historyUpdateTimeout,
+	_hashChangeTimeout,
+	_hashAnimCheckTimeout,
+	_hashChangedByScript,
+	_hashChangedByHistory,
+	_hashReseted,
+	_initialHash,
+	_historyChanged,
+	_closedFromURL,
+	_urlChangedOnce,
+	_windowLoc,
+
+	_supportsPushState,
+
+	_getHash = function() {
+		return _windowLoc.hash.substring(1);
+	},
+	_cleanHistoryTimeouts = function() {
+
+		if(_historyUpdateTimeout) {
+			clearTimeout(_historyUpdateTimeout);
+		}
+
+		if(_hashAnimCheckTimeout) {
+			clearTimeout(_hashAnimCheckTimeout);
+		}
+	},
+
+	// pid - Picture index
+	// gid - Gallery index
+	_parseItemIndexFromURL = function() {
+		var hash = _getHash(),
+			params = {};
+
+		if(hash.length < 5) { // pid=1
+			return params;
+		}
+
+		var i, vars = hash.split('&');
+		for (i = 0; i < vars.length; i++) {
+			if(!vars[i]) {
+				continue;
+			}
+			var pair = vars[i].split('=');	
+			if(pair.length < 2) {
+				continue;
+			}
+			params[pair[0]] = pair[1];
+		}
+		if(_options.galleryPIDs) {
+			// detect custom pid in hash and search for it among the items collection
+			var searchfor = params.pid;
+			params.pid = 0; // if custom pid cannot be found, fallback to the first item
+			for(i = 0; i < _items.length; i++) {
+				if(_items[i].pid === searchfor) {
+					params.pid = i;
+					break;
+				}
+			}
+		} else {
+			params.pid = parseInt(params.pid,10)-1;
+		}
+		if( params.pid < 0 ) {
+			params.pid = 0;
+		}
+		return params;
+	},
+	_updateHash = function() {
+
+		if(_hashAnimCheckTimeout) {
+			clearTimeout(_hashAnimCheckTimeout);
+		}
+
+
+		if(_numAnimations || _isDragging) {
+			// changing browser URL forces layout/paint in some browsers, which causes noticable lag during animation
+			// that's why we update hash only when no animations running
+			_hashAnimCheckTimeout = setTimeout(_updateHash, 500);
+			return;
+		}
+		
+		if(_hashChangedByScript) {
+			clearTimeout(_hashChangeTimeout);
+		} else {
+			_hashChangedByScript = true;
+		}
+
+
+		var pid = (_currentItemIndex + 1);
+		var item = _getItemAt( _currentItemIndex );
+		if(item.hasOwnProperty('pid')) {
+			// carry forward any custom pid assigned to the item
+			pid = item.pid;
+		}
+		var newHash = _initialHash + '&'  +  'gid=' + _options.galleryUID + '&' + 'pid=' + pid;
+
+		if(!_historyChanged) {
+			if(_windowLoc.hash.indexOf(newHash) === -1) {
+				_urlChangedOnce = true;
+			}
+			// first time - add new hisory record, then just replace
+		}
+
+		var newURL = _windowLoc.href.split('#')[0] + '#' +  newHash;
+
+		if( _supportsPushState ) {
+
+			if('#' + newHash !== window.location.hash) {
+				history[_historyChanged ? 'replaceState' : 'pushState']('', document.title, newURL);
+			}
+
+		} else {
+			if(_historyChanged) {
+				_windowLoc.replace( newURL );
+			} else {
+				_windowLoc.hash = newHash;
+			}
+		}
+		
+		
+
+		_historyChanged = true;
+		_hashChangeTimeout = setTimeout(function() {
+			_hashChangedByScript = false;
+		}, 60);
+	};
+
+
+
+	
+
+_registerModule('History', {
+
+	
+
+	publicMethods: {
+		initHistory: function() {
+
+			framework.extend(_options, _historyDefaultOptions, true);
+
+			if( !_options.history ) {
+				return;
+			}
+
+
+			_windowLoc = window.location;
+			_urlChangedOnce = false;
+			_closedFromURL = false;
+			_historyChanged = false;
+			_initialHash = _getHash();
+			_supportsPushState = ('pushState' in history);
+
+
+			if(_initialHash.indexOf('gid=') > -1) {
+				_initialHash = _initialHash.split('&gid=')[0];
+				_initialHash = _initialHash.split('?gid=')[0];
+			}
+			
+
+			_listen('afterChange', self.updateURL);
+			_listen('unbindEvents', function() {
+				framework.unbind(window, 'hashchange', self.onHashChange);
+			});
+
+
+			var returnToOriginal = function() {
+				_hashReseted = true;
+				if(!_closedFromURL) {
+
+					if(_urlChangedOnce) {
+						history.back();
+					} else {
+
+						if(_initialHash) {
+							_windowLoc.hash = _initialHash;
+						} else {
+							if (_supportsPushState) {
+
+								// remove hash from url without refreshing it or scrolling to top
+								history.pushState('', document.title,  _windowLoc.pathname + _windowLoc.search );
+							} else {
+								_windowLoc.hash = '';
+							}
+						}
+					}
+					
+				}
+
+				_cleanHistoryTimeouts();
+			};
+
+
+			_listen('unbindEvents', function() {
+				if(_closedByScroll) {
+					// if PhotoSwipe is closed by scroll, we go "back" before the closing animation starts
+					// this is done to keep the scroll position
+					returnToOriginal();
+				}
+			});
+			_listen('destroy', function() {
+				if(!_hashReseted) {
+					returnToOriginal();
+				}
+			});
+			_listen('firstUpdate', function() {
+				_currentItemIndex = _parseItemIndexFromURL().pid;
+			});
+
+			
+
+			
+			var index = _initialHash.indexOf('pid=');
+			if(index > -1) {
+				_initialHash = _initialHash.substring(0, index);
+				if(_initialHash.slice(-1) === '&') {
+					_initialHash = _initialHash.slice(0, -1);
+				}
+			}
+			
+
+			setTimeout(function() {
+				if(_isOpen) { // hasn't destroyed yet
+					framework.bind(window, 'hashchange', self.onHashChange);
+				}
+			}, 40);
+			
+		},
+		onHashChange: function() {
+
+			if(_getHash() === _initialHash) {
+
+				_closedFromURL = true;
+				self.close();
+				return;
+			}
+			if(!_hashChangedByScript) {
+
+				_hashChangedByHistory = true;
+				self.goTo( _parseItemIndexFromURL().pid );
+				_hashChangedByHistory = false;
+			}
+			
+		},
+		updateURL: function() {
+
+			// Delay the update of URL, to avoid lag during transition, 
+			// and to not to trigger actions like "refresh page sound" or "blinking favicon" to often
+			
+			_cleanHistoryTimeouts();
+			
+
+			if(_hashChangedByHistory) {
+				return;
+			}
+
+			if(!_historyChanged) {
+				_updateHash(); // first time
+			} else {
+				_historyUpdateTimeout = setTimeout(_updateHash, 800);
+			}
+		}
+	
+	}
+});

web/common/static/photoswipe/js/items-controller.js

@@ -0,0 +1,493 @@
+/**
+*
+* Controller manages gallery items, their dimensions, and their content.
+* 
+*/
+
+var _items,
+	_tempPanAreaSize = {},
+	_imagesToAppendPool = [],
+	_initialContentSet,
+	_initialZoomRunning,
+	_controllerDefaultOptions = {
+		index: 0,
+		errorMsg: '<div class="pswp__error-msg"><a href="%url%" target="_blank">The image</a> could not be loaded.</div>',
+		forceProgressiveLoading: false, // TODO
+		preload: [1,1],
+		getNumItemsFn: function() {
+			return _items.length;
+		}
+	};
+
+
+var _getItemAt,
+	_getNumItems,
+	_initialIsLoop,
+	_getZeroBounds = function() {
+		return {
+			center:{x:0,y:0}, 
+			max:{x:0,y:0}, 
+			min:{x:0,y:0}
+		};
+	},
+	_calculateSingleItemPanBounds = function(item, realPanElementW, realPanElementH ) {
+		var bounds = item.bounds;
+
+		// position of element when it's centered
+		bounds.center.x = Math.round((_tempPanAreaSize.x - realPanElementW) / 2);
+		bounds.center.y = Math.round((_tempPanAreaSize.y - realPanElementH) / 2) + item.vGap.top;
+
+		// maximum pan position
+		bounds.max.x = (realPanElementW > _tempPanAreaSize.x) ? 
+							Math.round(_tempPanAreaSize.x - realPanElementW) : 
+							bounds.center.x;
+		
+		bounds.max.y = (realPanElementH > _tempPanAreaSize.y) ? 
+							Math.round(_tempPanAreaSize.y - realPanElementH) + item.vGap.top : 
+							bounds.center.y;
+		
+		// minimum pan position
+		bounds.min.x = (realPanElementW > _tempPanAreaSize.x) ? 0 : bounds.center.x;
+		bounds.min.y = (realPanElementH > _tempPanAreaSize.y) ? item.vGap.top : bounds.center.y;
+	},
+	_calculateItemSize = function(item, viewportSize, zoomLevel) {
+
+		if (item.src && !item.loadError) {
+			var isInitial = !zoomLevel;
+			
+			if(isInitial) {
+				if(!item.vGap) {
+					item.vGap = {top:0,bottom:0};
+				}
+				// allows overriding vertical margin for individual items
+				_shout('parseVerticalMargin', item);
+			}
+
+
+			_tempPanAreaSize.x = viewportSize.x;
+			_tempPanAreaSize.y = viewportSize.y - item.vGap.top - item.vGap.bottom;
+
+			if (isInitial) {
+				var hRatio = _tempPanAreaSize.x / item.w;
+				var vRatio = _tempPanAreaSize.y / item.h;
+
+				item.fitRatio = hRatio < vRatio ? hRatio : vRatio;
+				//item.fillRatio = hRatio > vRatio ? hRatio : vRatio;
+
+				var scaleMode = _options.scaleMode;
+
+				if (scaleMode === 'orig') {
+					zoomLevel = 1;
+				} else if (scaleMode === 'fit') {
+					zoomLevel = item.fitRatio;
+				}
+
+				if (zoomLevel > 1) {
+					zoomLevel = 1;
+				}
+
+				item.initialZoomLevel = zoomLevel;
+				
+				if(!item.bounds) {
+					// reuse bounds object
+					item.bounds = _getZeroBounds(); 
+				}
+			}
+
+			if(!zoomLevel) {
+				return;
+			}
+
+			_calculateSingleItemPanBounds(item, item.w * zoomLevel, item.h * zoomLevel);
+
+			if (isInitial && zoomLevel === item.initialZoomLevel) {
+				item.initialPosition = item.bounds.center;
+			}
+
+			return item.bounds;
+		} else {
+			item.w = item.h = 0;
+			item.initialZoomLevel = item.fitRatio = 1;
+			item.bounds = _getZeroBounds();
+			item.initialPosition = item.bounds.center;
+
+			// if it's not image, we return zero bounds (content is not zoomable)
+			return item.bounds;
+		}
+		
+	},
+
+	
+
+
+	_appendImage = function(index, item, baseDiv, img, preventAnimation, keepPlaceholder) {
+		
+
+		if(item.loadError) {
+			return;
+		}
+
+		if(img) {
+
+			item.imageAppended = true;
+			_setImageSize(item, img, (item === self.currItem && _renderMaxResolution) );
+			
+			baseDiv.appendChild(img);
+
+			if(keepPlaceholder) {
+				setTimeout(function() {
+					if(item && item.loaded && item.placeholder) {
+						item.placeholder.style.display = 'none';
+						item.placeholder = null;
+					}
+				}, 500);
+			}
+		}
+	},
+	
+
+
+	_preloadImage = function(item) {
+		item.loading = true;
+		item.loaded = false;
+		var img = item.img = framework.createEl('pswp__img', 'img');
+		var onComplete = function() {
+			item.loading = false;
+			item.loaded = true;
+
+			if(item.loadComplete) {
+				item.loadComplete(item);
+			} else {
+				item.img = null; // no need to store image object
+			}
+			img.onload = img.onerror = null;
+			img = null;
+		};
+		img.onload = onComplete;
+		img.onerror = function() {
+			item.loadError = true;
+			onComplete();
+		};		
+
+		img.src = item.src;// + '?a=' + Math.random();
+
+		return img;
+	},
+	_checkForError = function(item, cleanUp) {
+		if(item.src && item.loadError && item.container) {
+
+			if(cleanUp) {
+				item.container.innerHTML = '';
+			}
+
+			item.container.innerHTML = _options.errorMsg.replace('%url%',  item.src );
+			return true;
+			
+		}
+	},
+	_setImageSize = function(item, img, maxRes) {
+		if(!item.src) {
+			return;
+		}
+
+		if(!img) {
+			img = item.container.lastChild;
+		}
+
+		var w = maxRes ? item.w : Math.round(item.w * item.fitRatio),
+			h = maxRes ? item.h : Math.round(item.h * item.fitRatio);
+		
+		if(item.placeholder && !item.loaded) {
+			item.placeholder.style.width = w + 'px';
+			item.placeholder.style.height = h + 'px';
+		}
+
+		img.style.width = w + 'px';
+		img.style.height = h + 'px';
+	},
+	_appendImagesPool = function() {
+
+		if(_imagesToAppendPool.length) {
+			var poolItem;
+
+			for(var i = 0; i < _imagesToAppendPool.length; i++) {
+				poolItem = _imagesToAppendPool[i];
+				if( poolItem.holder.index === poolItem.index ) {
+					_appendImage(poolItem.index, poolItem.item, poolItem.baseDiv, poolItem.img, false, poolItem.clearPlaceholder);
+				}
+			}
+			_imagesToAppendPool = [];
+		}
+	};
+	
+
+
+_registerModule('Controller', {
+
+	publicMethods: {
+
+		lazyLoadItem: function(index) {
+			index = _getLoopedId(index);
+			var item = _getItemAt(index);
+
+			if(!item || ((item.loaded || item.loading) && !_itemsNeedUpdate)) {
+				return;
+			}
+
+			_shout('gettingData', index, item);
+
+			if (!item.src) {
+				return;
+			}
+
+			_preloadImage(item);
+		},
+		initController: function() {
+			framework.extend(_options, _controllerDefaultOptions, true);
+			self.items = _items = items;
+			_getItemAt = self.getItemAt;
+			_getNumItems = _options.getNumItemsFn; //self.getNumItems;
+
+
+
+			_initialIsLoop = _options.loop;
+			if(_getNumItems() < 3) {
+				_options.loop = false; // disable loop if less then 3 items
+			}
+
+			_listen('beforeChange', function(diff) {
+
+				var p = _options.preload,
+					isNext = diff === null ? true : (diff >= 0),
+					preloadBefore = Math.min(p[0], _getNumItems() ),
+					preloadAfter = Math.min(p[1], _getNumItems() ),
+					i;
+
+
+				for(i = 1; i <= (isNext ? preloadAfter : preloadBefore); i++) {
+					self.lazyLoadItem(_currentItemIndex+i);
+				}
+				for(i = 1; i <= (isNext ? preloadBefore : preloadAfter); i++) {
+					self.lazyLoadItem(_currentItemIndex-i);
+				}
+			});
+
+			_listen('initialLayout', function() {
+				self.currItem.initialLayout = _options.getThumbBoundsFn && _options.getThumbBoundsFn(_currentItemIndex);
+			});
+
+			_listen('mainScrollAnimComplete', _appendImagesPool);
+			_listen('initialZoomInEnd', _appendImagesPool);
+
+
+
+			_listen('destroy', function() {
+				var item;
+				for(var i = 0; i < _items.length; i++) {
+					item = _items[i];
+					// remove reference to DOM elements, for GC
+					if(item.container) {
+						item.container = null; 
+					}
+					if(item.placeholder) {
+						item.placeholder = null;
+					}
+					if(item.img) {
+						item.img = null;
+					}
+					if(item.preloader) {
+						item.preloader = null;
+					}
+					if(item.loadError) {
+						item.loaded = item.loadError = false;
+					}
+				}
+				_imagesToAppendPool = null;
+			});
+		},
+
+
+		getItemAt: function(index) {
+			if (index >= 0) {
+				return _items[index] !== undefined ? _items[index] : false;
+			}
+			return false;
+		},
+
+		allowProgressiveImg: function() {
+			// 1. Progressive image loading isn't working on webkit/blink 
+			//    when hw-acceleration (e.g. translateZ) is applied to IMG element.
+			//    That's why in PhotoSwipe parent element gets zoom transform, not image itself.
+			//    
+			// 2. Progressive image loading sometimes blinks in webkit/blink when applying animation to parent element.
+			//    That's why it's disabled on touch devices (mainly because of swipe transition)
+			//    
+			// 3. Progressive image loading sometimes doesn't work in IE (up to 11).
+
+			// Don't allow progressive loading on non-large touch devices
+			return _options.forceProgressiveLoading || !_likelyTouchDevice || _options.mouseUsed || screen.width > 1200; 
+			// 1200 - to eliminate touch devices with large screen (like Chromebook Pixel)
+		},
+
+		setContent: function(holder, index) {
+
+			if(_options.loop) {
+				index = _getLoopedId(index);
+			}
+
+			var prevItem = self.getItemAt(holder.index);
+			if(prevItem) {
+				prevItem.container = null;
+			}
+	
+			var item = self.getItemAt(index),
+				img;
+			
+			if(!item) {
+				holder.el.innerHTML = '';
+				return;
+			}
+
+			// allow to override data
+			_shout('gettingData', index, item);
+
+			holder.index = index;
+			holder.item = item;
+
+			// base container DIV is created only once for each of 3 holders
+			var baseDiv = item.container = framework.createEl('pswp__zoom-wrap'); 
+
+			
+
+			if(!item.src && item.html) {
+				if(item.html.tagName) {
+					baseDiv.appendChild(item.html);
+				} else {
+					baseDiv.innerHTML = item.html;
+				}
+			}
+
+			_checkForError(item);
+
+			_calculateItemSize(item, _viewportSize);
+			
+			if(item.src && !item.loadError && !item.loaded) {
+
+				item.loadComplete = function(item) {
+
+					// gallery closed before image finished loading
+					if(!_isOpen) {
+						return;
+					}
+
+					// check if holder hasn't changed while image was loading
+					if(holder && holder.index === index ) {
+						if( _checkForError(item, true) ) {
+							item.loadComplete = item.img = null;
+							_calculateItemSize(item, _viewportSize);
+							_applyZoomPanToItem(item);
+
+							if(holder.index === _currentItemIndex) {
+								// recalculate dimensions
+								self.updateCurrZoomItem();
+							}
+							return;
+						}
+						if( !item.imageAppended ) {
+							if(_features.transform && (_mainScrollAnimating || _initialZoomRunning) ) {
+								_imagesToAppendPool.push({
+									item:item,
+									baseDiv:baseDiv,
+									img:item.img,
+									index:index,
+									holder:holder,
+									clearPlaceholder:true
+								});
+							} else {
+								_appendImage(index, item, baseDiv, item.img, _mainScrollAnimating || _initialZoomRunning, true);
+							}
+						} else {
+							// remove preloader & mini-img
+							if(!_initialZoomRunning && item.placeholder) {
+								item.placeholder.style.display = 'none';
+								item.placeholder = null;
+							}
+						}
+					}
+
+					item.loadComplete = null;
+					item.img = null; // no need to store image element after it's added
+
+					_shout('imageLoadComplete', index, item);
+				};
+
+				if(framework.features.transform) {
+					
+					var placeholderClassName = 'pswp__img pswp__img--placeholder'; 
+					placeholderClassName += (item.msrc ? '' : ' pswp__img--placeholder--blank');
+
+					var placeholder = framework.createEl(placeholderClassName, item.msrc ? 'img' : '');
+					if(item.msrc) {
+						placeholder.src = item.msrc;
+					}
+					
+					_setImageSize(item, placeholder);
+
+					baseDiv.appendChild(placeholder);
+					item.placeholder = placeholder;
+
+				}
+				
+
+				
+
+				if(!item.loading) {
+					_preloadImage(item);
+				}
+
+
+				if( self.allowProgressiveImg() ) {
+					// just append image
+					if(!_initialContentSet && _features.transform) {
+						_imagesToAppendPool.push({
+							item:item, 
+							baseDiv:baseDiv, 
+							img:item.img, 
+							index:index, 
+							holder:holder
+						});
+					} else {
+						_appendImage(index, item, baseDiv, item.img, true, true);
+					}
+				}
+				
+			} else if(item.src && !item.loadError) {
+				// image object is created every time, due to bugs of image loading & delay when switching images
+				img = framework.createEl('pswp__img', 'img');
+				img.style.opacity = 1;
+				img.src = item.src;
+				_setImageSize(item, img);
+				_appendImage(index, item, baseDiv, img, true);
+			}
+			
+
+			if(!_initialContentSet && index === _currentItemIndex) {
+				_currZoomElementStyle = baseDiv.style;
+				_showOrHide(item, (img ||item.img) );
+			} else {
+				_applyZoomPanToItem(item);
+			}
+
+			holder.el.innerHTML = '';
+			holder.el.appendChild(baseDiv);
+		},
+
+		cleanSlide: function( item ) {
+			if(item.img ) {
+				item.img.onload = item.img.onerror = null;
+			}
+			item.loaded = item.loading = item.img = item.imageAppended = false;
+		}
+
+	}
+});

web/common/static/photoswipe/js/show-hide-transition.js

@@ -0,0 +1,181 @@
+/**
+ * show-hide-transition.js:
+ *
+ * Manages initial opening or closing transition.
+ *
+ * If you're not planning to use transition for gallery at all,
+ * you may set options hideAnimationDuration and showAnimationDuration to 0,
+ * and just delete startAnimation function.
+ * 
+ */
+
+
+var _showOrHideTimeout,
+	_showOrHide = function(item, img, out, completeFn) {
+
+		if(_showOrHideTimeout) {
+			clearTimeout(_showOrHideTimeout);
+		}
+
+		_initialZoomRunning = true;
+		_initialContentSet = true;
+		
+		// dimensions of small thumbnail {x:,y:,w:}.
+		// Height is optional, as calculated based on large image.
+		var thumbBounds; 
+		if(item.initialLayout) {
+			thumbBounds = item.initialLayout;
+			item.initialLayout = null;
+		} else {
+			thumbBounds = _options.getThumbBoundsFn && _options.getThumbBoundsFn(_currentItemIndex);
+		}
+
+		var duration = out ? _options.hideAnimationDuration : _options.showAnimationDuration;
+
+		var onComplete = function() {
+			_stopAnimation('initialZoom');
+			if(!out) {
+				_applyBgOpacity(1);
+				if(img) {
+					img.style.display = 'block';
+				}
+				framework.addClass(template, 'pswp--animated-in');
+				_shout('initialZoom' + (out ? 'OutEnd' : 'InEnd'));
+			} else {
+				self.template.removeAttribute('style');
+				self.bg.removeAttribute('style');
+			}
+
+			if(completeFn) {
+				completeFn();
+			}
+			_initialZoomRunning = false;
+		};
+
+		// if bounds aren't provided, just open gallery without animation
+		if(!duration || !thumbBounds || thumbBounds.x === undefined) {
+
+			_shout('initialZoom' + (out ? 'Out' : 'In') );
+
+			_currZoomLevel = item.initialZoomLevel;
+			_equalizePoints(_panOffset,  item.initialPosition );
+			_applyCurrentZoomPan();
+
+			template.style.opacity = out ? 0 : 1;
+			_applyBgOpacity(1);
+
+			if(duration) {
+				setTimeout(function() {
+					onComplete();
+				}, duration);
+			} else {
+				onComplete();
+			}
+
+			return;
+		}
+
+		var startAnimation = function() {
+			var closeWithRaf = _closedByScroll,
+				fadeEverything = !self.currItem.src || self.currItem.loadError || _options.showHideOpacity;
+			
+			// apply hw-acceleration to image
+			if(item.miniImg) {
+				item.miniImg.style.webkitBackfaceVisibility = 'hidden';
+			}
+
+			if(!out) {
+				_currZoomLevel = thumbBounds.w / item.w;
+				_panOffset.x = thumbBounds.x;
+				_panOffset.y = thumbBounds.y - _initalWindowScrollY;
+
+				self[fadeEverything ? 'template' : 'bg'].style.opacity = 0.001;
+				_applyCurrentZoomPan();
+			}
+
+			_registerStartAnimation('initialZoom');
+			
+			if(out && !closeWithRaf) {
+				framework.removeClass(template, 'pswp--animated-in');
+			}
+
+			if(fadeEverything) {
+				if(out) {
+					framework[ (closeWithRaf ? 'remove' : 'add') + 'Class' ](template, 'pswp--animate_opacity');
+				} else {
+					setTimeout(function() {
+						framework.addClass(template, 'pswp--animate_opacity');
+					}, 30);
+				}
+			}
+
+			_showOrHideTimeout = setTimeout(function() {
+
+				_shout('initialZoom' + (out ? 'Out' : 'In') );
+				
+
+				if(!out) {
+
+					// "in" animation always uses CSS transitions (instead of rAF).
+					// CSS transition work faster here, 
+					// as developer may also want to animate other things, 
+					// like ui on top of sliding area, which can be animated just via CSS
+					
+					_currZoomLevel = item.initialZoomLevel;
+					_equalizePoints(_panOffset,  item.initialPosition );
+					_applyCurrentZoomPan();
+					_applyBgOpacity(1);
+
+					if(fadeEverything) {
+						template.style.opacity = 1;
+					} else {
+						_applyBgOpacity(1);
+					}
+
+					_showOrHideTimeout = setTimeout(onComplete, duration + 20);
+				} else {
+
+					// "out" animation uses rAF only when PhotoSwipe is closed by browser scroll, to recalculate position
+					var destZoomLevel = thumbBounds.w / item.w,
+						initialPanOffset = {
+							x: _panOffset.x,
+							y: _panOffset.y
+						},
+						initialZoomLevel = _currZoomLevel,
+						initalBgOpacity = _bgOpacity,
+						onUpdate = function(now) {
+							
+							if(now === 1) {
+								_currZoomLevel = destZoomLevel;
+								_panOffset.x = thumbBounds.x;
+								_panOffset.y = thumbBounds.y  - _currentWindowScrollY;
+							} else {
+								_currZoomLevel = (destZoomLevel - initialZoomLevel) * now + initialZoomLevel;
+								_panOffset.x = (thumbBounds.x - initialPanOffset.x) * now + initialPanOffset.x;
+								_panOffset.y = (thumbBounds.y - _currentWindowScrollY - initialPanOffset.y) * now + initialPanOffset.y;
+							}
+							
+							_applyCurrentZoomPan();
+							if(fadeEverything) {
+								template.style.opacity = 1 - now;
+							} else {
+								_applyBgOpacity( initalBgOpacity - now * initalBgOpacity );
+							}
+						};
+
+					if(closeWithRaf) {
+						_animateProp('initialZoom', 0, 1, duration, framework.easing.cubic.out, onUpdate, onComplete);
+					} else {
+						onUpdate(1);
+						_showOrHideTimeout = setTimeout(onComplete, duration + 20);
+					}
+				}
+			
+			}, out ? 25 : 90); // Main purpose of this delay is to give browser time to paint and
+					// create composite layers of PhotoSwipe UI parts (background, controls, caption, arrows).
+					// Which avoids lag at the beginning of scale transition.
+		};
+		startAnimation();
+
+		
+	};

web/common/static/photoswipe/js/tap.js

@@ -0,0 +1,78 @@
+/**
+ * tap.js:
+ *
+ * Displatches tap and double-tap events.
+ * 
+ */
+
+var tapTimer,
+	tapReleasePoint = {},
+	_dispatchTapEvent = function(origEvent, releasePoint, pointerType) {		
+		var e = document.createEvent( 'CustomEvent' ),
+			eDetail = {
+				origEvent:origEvent, 
+				target:origEvent.target, 
+				releasePoint: releasePoint, 
+				pointerType:pointerType || 'touch'
+			};
+
+		e.initCustomEvent( 'pswpTap', true, true, eDetail );
+		origEvent.target.dispatchEvent(e);
+	};
+
+_registerModule('Tap', {
+	publicMethods: {
+		initTap: function() {
+			_listen('firstTouchStart', self.onTapStart);
+			_listen('touchRelease', self.onTapRelease);
+			_listen('destroy', function() {
+				tapReleasePoint = {};
+				tapTimer = null;
+			});
+		},
+		onTapStart: function(touchList) {
+			if(touchList.length > 1) {
+				clearTimeout(tapTimer);
+				tapTimer = null;
+			}
+		},
+		onTapRelease: function(e, releasePoint) {
+			if(!releasePoint) {
+				return;
+			}
+
+			if(!_moved && !_isMultitouch && !_numAnimations) {
+				var p0 = releasePoint;
+				if(tapTimer) {
+					clearTimeout(tapTimer);
+					tapTimer = null;
+
+					// Check if taped on the same place
+					if ( _isNearbyPoints(p0, tapReleasePoint) ) {
+						_shout('doubleTap', p0);
+						return;
+					}
+				}
+
+				if(releasePoint.type === 'mouse') {
+					_dispatchTapEvent(e, releasePoint, 'mouse');
+					return;
+				}
+
+				var clickedTagName = e.target.tagName.toUpperCase();
+				// avoid double tap delay on buttons and elements that have class pswp__single-tap
+				if(clickedTagName === 'BUTTON' || framework.hasClass(e.target, 'pswp__single-tap') ) {
+					_dispatchTapEvent(e, releasePoint);
+					return;
+				}
+
+				_equalizePoints(tapReleasePoint, p0);
+
+				tapTimer = setTimeout(function() {
+					_dispatchTapEvent(e, releasePoint);
+					tapTimer = null;
+				}, 300);
+			}
+		}
+	}
+});

web/common/static/photoswipe/js/ui/photoswipe-ui-default.js

@@ -0,0 +1,858 @@
+/**
+*
+* UI on top of main sliding area (caption, arrows, close button, etc.).
+* Built just using public methods/properties of PhotoSwipe.
+* 
+*/
+(function (root, factory) { 
+	if (typeof define === 'function' && define.amd) {
+		define(factory);
+	} else if (typeof exports === 'object') {
+		module.exports = factory();
+	} else {
+		root.PhotoSwipeUI_Default = factory();
+	}
+})(this, function () {
+
+	'use strict';
+
+
+
+var PhotoSwipeUI_Default =
+ function(pswp, framework) {
+
+	var ui = this;
+	var _overlayUIUpdated = false,
+		_controlsVisible = true,
+		_fullscrenAPI,
+		_controls,
+		_captionContainer,
+		_fakeCaptionContainer,
+		_indexIndicator,
+		_shareButton,
+		_shareModal,
+		_shareModalHidden = true,
+		_initalCloseOnScrollValue,
+		_isIdle,
+		_listen,
+
+		_loadingIndicator,
+		_loadingIndicatorHidden,
+		_loadingIndicatorTimeout,
+
+		_galleryHasOneSlide,
+
+		_options,
+		_defaultUIOptions = {
+			barsSize: {top:44, bottom:'auto'},
+			closeElClasses: ['item', 'caption', 'zoom-wrap', 'ui', 'top-bar'], 
+			timeToIdle: 4000, 
+			timeToIdleOutside: 1000,
+			loadingIndicatorDelay: 1000, // 2s
+			
+			addCaptionHTMLFn: function(item, captionEl /*, isFake */) {
+				if(!item.title) {
+					captionEl.children[0].innerHTML = '';
+					return false;
+				}
+				captionEl.children[0].innerHTML = item.title;
+				return true;
+			},
+
+			closeEl:true,
+			captionEl: true,
+			fullscreenEl: true,
+			zoomEl: true,
+			shareEl: true,
+			counterEl: true,
+			arrowEl: true,
+			preloaderEl: true,
+
+			tapToClose: false,
+			tapToToggleControls: true,
+
+			clickToCloseNonZoomable: true,
+
+			shareButtons: [
+				{id:'facebook', label:'Share on Facebook', url:'https://www.facebook.com/sharer/sharer.php?u={{url}}'},
+				{id:'twitter', label:'Tweet', url:'https://twitter.com/intent/tweet?text={{text}}&url={{url}}'},
+				{id:'pinterest', label:'Pin it', url:'http://www.pinterest.com/pin/create/button/'+
+													'?url={{url}}&media={{image_url}}&description={{text}}'},
+				{id:'download', label:'Download image', url:'{{raw_image_url}}', download:true}
+			],
+			getImageURLForShare: function( /* shareButtonData */ ) {
+				return pswp.currItem.src || '';
+			},
+			getPageURLForShare: function( /* shareButtonData */ ) {
+				return window.location.href;
+			},
+			getTextForShare: function( /* shareButtonData */ ) {
+				return pswp.currItem.title || '';
+			},
+				
+			indexIndicatorSep: ' / ',
+			fitControlsWidth: 1200
+
+		},
+		_blockControlsTap,
+		_blockControlsTapTimeout;
+
+
+
+	var _onControlsTap = function(e) {
+			if(_blockControlsTap) {
+				return true;
+			}
+
+
+			e = e || window.event;
+
+			if(_options.timeToIdle && _options.mouseUsed && !_isIdle) {
+				// reset idle timer
+				_onIdleMouseMove();
+			}
+
+
+			var target = e.target || e.srcElement,
+				uiElement,
+				clickedClass = target.getAttribute('class') || '',
+				found;
+
+			for(var i = 0; i < _uiElements.length; i++) {
+				uiElement = _uiElements[i];
+				if(uiElement.onTap && clickedClass.indexOf('pswp__' + uiElement.name ) > -1 ) {
+					uiElement.onTap();
+					found = true;
+
+				}
+			}
+
+			if(found) {
+				if(e.stopPropagation) {
+					e.stopPropagation();
+				}
+				_blockControlsTap = true;
+
+				// Some versions of Android don't prevent ghost click event 
+				// when preventDefault() was called on touchstart and/or touchend.
+				// 
+				// This happens on v4.3, 4.2, 4.1, 
+				// older versions strangely work correctly, 
+				// but just in case we add delay on all of them)	
+				var tapDelay = framework.features.isOldAndroid ? 600 : 30;
+				_blockControlsTapTimeout = setTimeout(function() {
+					_blockControlsTap = false;
+				}, tapDelay);
+			}
+
+		},
+		_fitControlsInViewport = function() {
+			return !pswp.likelyTouchDevice || _options.mouseUsed || screen.width > _options.fitControlsWidth;
+		},
+		_togglePswpClass = function(el, cName, add) {
+			framework[ (add ? 'add' : 'remove') + 'Class' ](el, 'pswp__' + cName);
+		},
+
+		// add class when there is just one item in the gallery
+		// (by default it hides left/right arrows and 1ofX counter)
+		_countNumItems = function() {
+			var hasOneSlide = (_options.getNumItemsFn() === 1);
+
+			if(hasOneSlide !== _galleryHasOneSlide) {
+				_togglePswpClass(_controls, 'ui--one-slide', hasOneSlide);
+				_galleryHasOneSlide = hasOneSlide;
+			}
+		},
+		_toggleShareModalClass = function() {
+			_togglePswpClass(_shareModal, 'share-modal--hidden', _shareModalHidden);
+		},
+		_toggleShareModal = function() {
+
+			_shareModalHidden = !_shareModalHidden;
+			
+			
+			if(!_shareModalHidden) {
+				_toggleShareModalClass();
+				setTimeout(function() {
+					if(!_shareModalHidden) {
+						framework.addClass(_shareModal, 'pswp__share-modal--fade-in');
+					}
+				}, 30);
+			} else {
+				framework.removeClass(_shareModal, 'pswp__share-modal--fade-in');
+				setTimeout(function() {
+					if(_shareModalHidden) {
+						_toggleShareModalClass();
+					}
+				}, 300);
+			}
+			
+			if(!_shareModalHidden) {
+				_updateShareURLs();
+			}
+			return false;
+		},
+
+		_openWindowPopup = function(e) {
+			e = e || window.event;
+			var target = e.target || e.srcElement;
+
+			pswp.shout('shareLinkClick', e, target);
+
+			if(!target.href) {
+				return false;
+			}
+
+			if( target.hasAttribute('download') ) {
+				return true;
+			}
+
+			window.open(target.href, 'pswp_share', 'scrollbars=yes,resizable=yes,toolbar=no,'+
+										'location=yes,width=550,height=420,top=100,left=' + 
+										(window.screen ? Math.round(screen.width / 2 - 275) : 100)  );
+
+			if(!_shareModalHidden) {
+				_toggleShareModal();
+			}
+			
+			return false;
+		},
+		_updateShareURLs = function() {
+			var shareButtonOut = '',
+				shareButtonData,
+				shareURL,
+				image_url,
+				page_url,
+				share_text;
+
+			for(var i = 0; i < _options.shareButtons.length; i++) {
+				shareButtonData = _options.shareButtons[i];
+
+				image_url = _options.getImageURLForShare(shareButtonData);
+				page_url = _options.getPageURLForShare(shareButtonData);
+				share_text = _options.getTextForShare(shareButtonData);
+
+				shareURL = shareButtonData.url.replace('{{url}}', encodeURIComponent(page_url) )
+									.replace('{{image_url}}', encodeURIComponent(image_url) )
+									.replace('{{raw_image_url}}', image_url )
+									.replace('{{text}}', encodeURIComponent(share_text) );
+
+				shareButtonOut += '<a href="' + shareURL + '" target="_blank" '+
+									'class="pswp__share--' + shareButtonData.id + '"' +
+									(shareButtonData.download ? 'download' : '') + '>' + 
+									shareButtonData.label + '</a>';
+
+				if(_options.parseShareButtonOut) {
+					shareButtonOut = _options.parseShareButtonOut(shareButtonData, shareButtonOut);
+				}
+			}
+			_shareModal.children[0].innerHTML = shareButtonOut;
+			_shareModal.children[0].onclick = _openWindowPopup;
+
+		},
+		_hasCloseClass = function(target) {
+			for(var  i = 0; i < _options.closeElClasses.length; i++) {
+				if( framework.hasClass(target, 'pswp__' + _options.closeElClasses[i]) ) {
+					return true;
+				}
+			}
+		},
+		_idleInterval,
+		_idleTimer,
+		_idleIncrement = 0,
+		_onIdleMouseMove = function() {
+			clearTimeout(_idleTimer);
+			_idleIncrement = 0;
+			if(_isIdle) {
+				ui.setIdle(false);
+			}
+		},
+		_onMouseLeaveWindow = function(e) {
+			e = e ? e : window.event;
+			var from = e.relatedTarget || e.toElement;
+			if (!from || from.nodeName === 'HTML') {
+				clearTimeout(_idleTimer);
+				_idleTimer = setTimeout(function() {
+					ui.setIdle(true);
+				}, _options.timeToIdleOutside);
+			}
+		},
+		_setupFullscreenAPI = function() {
+			if(_options.fullscreenEl && !framework.features.isOldAndroid) {
+				if(!_fullscrenAPI) {
+					_fullscrenAPI = ui.getFullscreenAPI();
+				}
+				if(_fullscrenAPI) {
+					framework.bind(document, _fullscrenAPI.eventK, ui.updateFullscreen);
+					ui.updateFullscreen();
+					framework.addClass(pswp.template, 'pswp--supports-fs');
+				} else {
+					framework.removeClass(pswp.template, 'pswp--supports-fs');
+				}
+			}
+		},
+		_setupLoadingIndicator = function() {
+			// Setup loading indicator
+			if(_options.preloaderEl) {
+			
+				_toggleLoadingIndicator(true);
+
+				_listen('beforeChange', function() {
+
+					clearTimeout(_loadingIndicatorTimeout);
+
+					// display loading indicator with delay
+					_loadingIndicatorTimeout = setTimeout(function() {
+
+						if(pswp.currItem && pswp.currItem.loading) {
+
+							if( !pswp.allowProgressiveImg() || (pswp.currItem.img && !pswp.currItem.img.naturalWidth)  ) {
+								// show preloader if progressive loading is not enabled, 
+								// or image width is not defined yet (because of slow connection)
+								_toggleLoadingIndicator(false); 
+								// items-controller.js function allowProgressiveImg
+							}
+							
+						} else {
+							_toggleLoadingIndicator(true); // hide preloader
+						}
+
+					}, _options.loadingIndicatorDelay);
+					
+				});
+				_listen('imageLoadComplete', function(index, item) {
+					if(pswp.currItem === item) {
+						_toggleLoadingIndicator(true);
+					}
+				});
+
+			}
+		},
+		_toggleLoadingIndicator = function(hide) {
+			if( _loadingIndicatorHidden !== hide ) {
+				_togglePswpClass(_loadingIndicator, 'preloader--active', !hide);
+				_loadingIndicatorHidden = hide;
+			}
+		},
+		_applyNavBarGaps = function(item) {
+			var gap = item.vGap;
+
+			if( _fitControlsInViewport() ) {
+				
+				var bars = _options.barsSize; 
+				if(_options.captionEl && bars.bottom === 'auto') {
+					if(!_fakeCaptionContainer) {
+						_fakeCaptionContainer = framework.createEl('pswp__caption pswp__caption--fake');
+						_fakeCaptionContainer.appendChild( framework.createEl('pswp__caption__center') );
+						_controls.insertBefore(_fakeCaptionContainer, _captionContainer);
+						framework.addClass(_controls, 'pswp__ui--fit');
+					}
+					if( _options.addCaptionHTMLFn(item, _fakeCaptionContainer, true) ) {
+
+						var captionSize = _fakeCaptionContainer.clientHeight;
+						gap.bottom = parseInt(captionSize,10) || 44;
+					} else {
+						gap.bottom = bars.top; // if no caption, set size of bottom gap to size of top
+					}
+				} else {
+					gap.bottom = bars.bottom === 'auto' ? 0 : bars.bottom;
+				}
+				
+				// height of top bar is static, no need to calculate it
+				gap.top = bars.top;
+			} else {
+				gap.top = gap.bottom = 0;
+			}
+		},
+		_setupIdle = function() {
+			// Hide controls when mouse is used
+			if(_options.timeToIdle) {
+				_listen('mouseUsed', function() {
+					
+					framework.bind(document, 'mousemove', _onIdleMouseMove);
+					framework.bind(document, 'mouseout', _onMouseLeaveWindow);
+
+					_idleInterval = setInterval(function() {
+						_idleIncrement++;
+						if(_idleIncrement === 2) {
+							ui.setIdle(true);
+						}
+					}, _options.timeToIdle / 2);
+				});
+			}
+		},
+		_setupHidingControlsDuringGestures = function() {
+
+			// Hide controls on vertical drag
+			_listen('onVerticalDrag', function(now) {
+				if(_controlsVisible && now < 0.95) {
+					ui.hideControls();
+				} else if(!_controlsVisible && now >= 0.95) {
+					ui.showControls();
+				}
+			});
+
+			// Hide controls when pinching to close
+			var pinchControlsHidden;
+			_listen('onPinchClose' , function(now) {
+				if(_controlsVisible && now < 0.9) {
+					ui.hideControls();
+					pinchControlsHidden = true;
+				} else if(pinchControlsHidden && !_controlsVisible && now > 0.9) {
+					ui.showControls();
+				}
+			});
+
+			_listen('zoomGestureEnded', function() {
+				pinchControlsHidden = false;
+				if(pinchControlsHidden && !_controlsVisible) {
+					ui.showControls();
+				}
+			});
+
+		};
+
+
+
+	var _uiElements = [
+		{ 
+			name: 'caption', 
+			option: 'captionEl',
+			onInit: function(el) {  
+				_captionContainer = el; 
+			} 
+		},
+		{ 
+			name: 'share-modal', 
+			option: 'shareEl',
+			onInit: function(el) {  
+				_shareModal = el;
+			},
+			onTap: function() {
+				_toggleShareModal();
+			} 
+		},
+		{ 
+			name: 'button--share', 
+			option: 'shareEl',
+			onInit: function(el) { 
+				_shareButton = el;
+			},
+			onTap: function() {
+				_toggleShareModal();
+			} 
+		},
+		{ 
+			name: 'button--zoom', 
+			option: 'zoomEl',
+			onTap: pswp.toggleDesktopZoom
+		},
+		{ 
+			name: 'counter', 
+			option: 'counterEl',
+			onInit: function(el) {  
+				_indexIndicator = el;
+			} 
+		},
+		{ 
+			name: 'button--close', 
+			option: 'closeEl',
+			onTap: pswp.close
+		},
+		{ 
+			name: 'button--arrow--left', 
+			option: 'arrowEl',
+			onTap: pswp.prev
+		},
+		{ 
+			name: 'button--arrow--right', 
+			option: 'arrowEl',
+			onTap: pswp.next
+		},
+		{ 
+			name: 'button--fs', 
+			option: 'fullscreenEl',
+			onTap: function() {  
+				if(_fullscrenAPI.isFullscreen()) {
+					_fullscrenAPI.exit();
+				} else {
+					_fullscrenAPI.enter();
+				}
+			} 
+		},
+		{ 
+			name: 'preloader', 
+			option: 'preloaderEl',
+			onInit: function(el) {  
+				_loadingIndicator = el;
+			} 
+		}
+
+	];
+
+	var _setupUIElements = function() {
+		var item,
+			classAttr,
+			uiElement;
+
+		var loopThroughChildElements = function(sChildren) {
+			if(!sChildren) {
+				return;
+			}
+
+			var l = sChildren.length;
+			for(var i = 0; i < l; i++) {
+				item = sChildren[i];
+				classAttr = item.className;
+
+				for(var a = 0; a < _uiElements.length; a++) {
+					uiElement = _uiElements[a];
+
+					if(classAttr.indexOf('pswp__' + uiElement.name) > -1  ) {
+
+						if( _options[uiElement.option] ) { // if element is not disabled from options
+							
+							framework.removeClass(item, 'pswp__element--disabled');
+							if(uiElement.onInit) {
+								uiElement.onInit(item);
+							}
+							
+							//item.style.display = 'block';
+						} else {
+							framework.addClass(item, 'pswp__element--disabled');
+							//item.style.display = 'none';
+						}
+					}
+				}
+			}
+		};
+		loopThroughChildElements(_controls.children);
+
+		var topBar =  framework.getChildByClass(_controls, 'pswp__top-bar');
+		if(topBar) {
+			loopThroughChildElements( topBar.children );
+		}
+	};
+
+
+	
+
+	ui.init = function() {
+
+		// extend options
+		framework.extend(pswp.options, _defaultUIOptions, true);
+
+		// create local link for fast access
+		_options = pswp.options;
+
+		// find pswp__ui element
+		_controls = framework.getChildByClass(pswp.scrollWrap, 'pswp__ui');
+
+		// create local link
+		_listen = pswp.listen;
+
+
+		_setupHidingControlsDuringGestures();
+
+		// update controls when slides change
+		_listen('beforeChange', ui.update);
+
+		// toggle zoom on double-tap
+		_listen('doubleTap', function(point) {
+			var initialZoomLevel = pswp.currItem.initialZoomLevel;
+			if(pswp.getZoomLevel() !== initialZoomLevel) {
+				pswp.zoomTo(initialZoomLevel, point, 333);
+			} else {
+				pswp.zoomTo(_options.getDoubleTapZoom(false, pswp.currItem), point, 333);
+			}
+		});
+
+		// Allow text selection in caption
+		_listen('preventDragEvent', function(e, isDown, preventObj) {
+			var t = e.target || e.srcElement;
+			if(
+				t && 
+				t.getAttribute('class') && e.type.indexOf('mouse') > -1 && 
+				( t.getAttribute('class').indexOf('__caption') > 0 || (/(SMALL|STRONG|EM)/i).test(t.tagName) ) 
+			) {
+				preventObj.prevent = false;
+			}
+		});
+
+		// bind events for UI
+		_listen('bindEvents', function() {
+			framework.bind(_controls, 'pswpTap click', _onControlsTap);
+			framework.bind(pswp.scrollWrap, 'pswpTap', ui.onGlobalTap);
+
+			if(!pswp.likelyTouchDevice) {
+				framework.bind(pswp.scrollWrap, 'mouseover', ui.onMouseOver);
+			}
+		});
+
+		// unbind events for UI
+		_listen('unbindEvents', function() {
+			if(!_shareModalHidden) {
+				_toggleShareModal();
+			}
+
+			if(_idleInterval) {
+				clearInterval(_idleInterval);
+			}
+			framework.unbind(document, 'mouseout', _onMouseLeaveWindow);
+			framework.unbind(document, 'mousemove', _onIdleMouseMove);
+			framework.unbind(_controls, 'pswpTap click', _onControlsTap);
+			framework.unbind(pswp.scrollWrap, 'pswpTap', ui.onGlobalTap);
+			framework.unbind(pswp.scrollWrap, 'mouseover', ui.onMouseOver);
+
+			if(_fullscrenAPI) {
+				framework.unbind(document, _fullscrenAPI.eventK, ui.updateFullscreen);
+				if(_fullscrenAPI.isFullscreen()) {
+					_options.hideAnimationDuration = 0;
+					_fullscrenAPI.exit();
+				}
+				_fullscrenAPI = null;
+			}
+		});
+
+
+		// clean up things when gallery is destroyed
+		_listen('destroy', function() {
+			if(_options.captionEl) {
+				if(_fakeCaptionContainer) {
+					_controls.removeChild(_fakeCaptionContainer);
+				}
+				framework.removeClass(_captionContainer, 'pswp__caption--empty');
+			}
+
+			if(_shareModal) {
+				_shareModal.children[0].onclick = null;
+			}
+			framework.removeClass(_controls, 'pswp__ui--over-close');
+			framework.addClass( _controls, 'pswp__ui--hidden');
+			ui.setIdle(false);
+		});
+		
+
+		if(!_options.showAnimationDuration) {
+			framework.removeClass( _controls, 'pswp__ui--hidden');
+		}
+		_listen('initialZoomIn', function() {
+			if(_options.showAnimationDuration) {
+				framework.removeClass( _controls, 'pswp__ui--hidden');
+			}
+		});
+		_listen('initialZoomOut', function() {
+			framework.addClass( _controls, 'pswp__ui--hidden');
+		});
+
+		_listen('parseVerticalMargin', _applyNavBarGaps);
+		
+		_setupUIElements();
+
+		if(_options.shareEl && _shareButton && _shareModal) {
+			_shareModalHidden = true;
+		}
+
+		_countNumItems();
+
+		_setupIdle();
+
+		_setupFullscreenAPI();
+
+		_setupLoadingIndicator();
+	};
+
+	ui.setIdle = function(isIdle) {
+		_isIdle = isIdle;
+		_togglePswpClass(_controls, 'ui--idle', isIdle);
+	};
+
+	ui.update = function() {
+		// Don't update UI if it's hidden
+		if(_controlsVisible && pswp.currItem) {
+			
+			ui.updateIndexIndicator();
+
+			if(_options.captionEl) {
+				_options.addCaptionHTMLFn(pswp.currItem, _captionContainer);
+
+				_togglePswpClass(_captionContainer, 'caption--empty', !pswp.currItem.title);
+			}
+
+			_overlayUIUpdated = true;
+
+		} else {
+			_overlayUIUpdated = false;
+		}
+
+		if(!_shareModalHidden) {
+			_toggleShareModal();
+		}
+
+		_countNumItems();
+	};
+
+	ui.updateFullscreen = function(e) {
+
+		if(e) {
+			// some browsers change window scroll position during the fullscreen
+			// so PhotoSwipe updates it just in case
+			setTimeout(function() {
+				pswp.setScrollOffset( 0, framework.getScrollY() );
+			}, 50);
+		}
+		
+		// toogle pswp--fs class on root element
+		framework[ (_fullscrenAPI.isFullscreen() ? 'add' : 'remove') + 'Class' ](pswp.template, 'pswp--fs');
+	};
+
+	ui.updateIndexIndicator = function() {
+		if(_options.counterEl) {
+			_indexIndicator.innerHTML = (pswp.getCurrentIndex()+1) + 
+										_options.indexIndicatorSep + 
+										_options.getNumItemsFn();
+		}
+	};
+	
+	ui.onGlobalTap = function(e) {
+		e = e || window.event;
+		var target = e.target || e.srcElement;
+
+		if(_blockControlsTap) {
+			return;
+		}
+
+		if(e.detail && e.detail.pointerType === 'mouse') {
+
+			// close gallery if clicked outside of the image
+			if(_hasCloseClass(target)) {
+				pswp.close();
+				return;
+			}
+
+			if(framework.hasClass(target, 'pswp__img')) {
+				if(pswp.getZoomLevel() === 1 && pswp.getZoomLevel() <= pswp.currItem.fitRatio) {
+					if(_options.clickToCloseNonZoomable) {
+						pswp.close();
+					}
+				} else {
+					pswp.toggleDesktopZoom(e.detail.releasePoint);
+				}
+			}
+			
+		} else {
+
+			// tap anywhere (except buttons) to toggle visibility of controls
+			if(_options.tapToToggleControls) {
+				if(_controlsVisible) {
+					ui.hideControls();
+				} else {
+					ui.showControls();
+				}
+			}
+
+			// tap to close gallery
+			if(_options.tapToClose && (framework.hasClass(target, 'pswp__img') || _hasCloseClass(target)) ) {
+				pswp.close();
+				return;
+			}
+			
+		}
+	};
+	ui.onMouseOver = function(e) {
+		e = e || window.event;
+		var target = e.target || e.srcElement;
+
+		// add class when mouse is over an element that should close the gallery
+		_togglePswpClass(_controls, 'ui--over-close', _hasCloseClass(target));
+	};
+
+	ui.hideControls = function() {
+		framework.addClass(_controls,'pswp__ui--hidden');
+		_controlsVisible = false;
+	};
+
+	ui.showControls = function() {
+		_controlsVisible = true;
+		if(!_overlayUIUpdated) {
+			ui.update();
+		}
+		framework.removeClass(_controls,'pswp__ui--hidden');
+	};
+
+	ui.supportsFullscreen = function() {
+		var d = document;
+		return !!(d.exitFullscreen || d.mozCancelFullScreen || d.webkitExitFullscreen || d.msExitFullscreen);
+	};
+
+	ui.getFullscreenAPI = function() {
+		var dE = document.documentElement,
+			api,
+			tF = 'fullscreenchange';
+
+		if (dE.requestFullscreen) {
+			api = {
+				enterK: 'requestFullscreen',
+				exitK: 'exitFullscreen',
+				elementK: 'fullscreenElement',
+				eventK: tF
+			};
+
+		} else if(dE.mozRequestFullScreen ) {
+			api = {
+				enterK: 'mozRequestFullScreen',
+				exitK: 'mozCancelFullScreen',
+				elementK: 'mozFullScreenElement',
+				eventK: 'moz' + tF
+			};
+
+			
+
+		} else if(dE.webkitRequestFullscreen) {
+			api = {
+				enterK: 'webkitRequestFullscreen',
+				exitK: 'webkitExitFullscreen',
+				elementK: 'webkitFullscreenElement',
+				eventK: 'webkit' + tF
+			};
+
+		} else if(dE.msRequestFullscreen) {
+			api = {
+				enterK: 'msRequestFullscreen',
+				exitK: 'msExitFullscreen',
+				elementK: 'msFullscreenElement',
+				eventK: 'MSFullscreenChange'
+			};
+		}
+
+		if(api) {
+			api.enter = function() { 
+				// disable close-on-scroll in fullscreen
+				_initalCloseOnScrollValue = _options.closeOnScroll; 
+				_options.closeOnScroll = false; 
+
+				if(this.enterK === 'webkitRequestFullscreen') {
+					pswp.template[this.enterK]( Element.ALLOW_KEYBOARD_INPUT );
+				} else {
+					return pswp.template[this.enterK](); 
+				}
+			};
+			api.exit = function() { 
+				_options.closeOnScroll = _initalCloseOnScrollValue;
+
+				return document[this.exitK](); 
+
+			};
+			api.isFullscreen = function() { return document[this.elementK]; };
+		}
+
+		return api;
+	};
+
+
+
+};
+return PhotoSwipeUI_Default;
+
+
+});