open: function()

in antora/supplemental-ui/js/home/lib/magnific-popup/magnific-popup.js [156:382]
147 lines of code
37 McCabe index (conditional complexity)

	open: function(data) {

		var i;

		if(data.isObj === false) { 
			// convert jQuery collection to array to avoid conflicts later
			mfp.items = data.items.toArray();

			mfp.index = 0;
			var items = data.items,
				item;
			for(i = 0; i < items.length; i++) {
				item = items[i];
				if(item.parsed) {
					item = item.el[0];
				}
				if(item === data.el[0]) {
					mfp.index = i;
					break;
				}
			}
		} else {
			mfp.items = $.isArray(data.items) ? data.items : [data.items];
			mfp.index = data.index || 0;
		}

		// if popup is already opened - we just update the content
		if(mfp.isOpen) {
			mfp.updateItemHTML();
			return;
		}
		
		mfp.types = []; 
		_wrapClasses = '';
		if(data.mainEl && data.mainEl.length) {
			mfp.ev = data.mainEl.eq(0);
		} else {
			mfp.ev = _document;
		}

		if(data.key) {
			if(!mfp.popupsCache[data.key]) {
				mfp.popupsCache[data.key] = {};
			}
			mfp.currTemplate = mfp.popupsCache[data.key];
		} else {
			mfp.currTemplate = {};
		}



		mfp.st = $.extend(true, {}, $.magnificPopup.defaults, data ); 
		mfp.fixedContentPos = mfp.st.fixedContentPos === 'auto' ? !mfp.probablyMobile : mfp.st.fixedContentPos;

		if(mfp.st.modal) {
			mfp.st.closeOnContentClick = false;
			mfp.st.closeOnBgClick = false;
			mfp.st.showCloseBtn = false;
			mfp.st.enableEscapeKey = false;
		}
		

		// Building markup
		// main containers are created only once
		if(!mfp.bgOverlay) {

			// Dark overlay
			mfp.bgOverlay = _getEl('bg').on('click'+EVENT_NS, function() {
				mfp.close();
			});

			mfp.wrap = _getEl('wrap').attr('tabindex', -1).on('click'+EVENT_NS, function(e) {
				if(mfp._checkIfClose(e.target)) {
					mfp.close();
				}
			});

			mfp.container = _getEl('container', mfp.wrap);
		}

		mfp.contentContainer = _getEl('content');
		if(mfp.st.preloader) {
			mfp.preloader = _getEl('preloader', mfp.container, mfp.st.tLoading);
		}


		// Initializing modules
		var modules = $.magnificPopup.modules;
		for(i = 0; i < modules.length; i++) {
			var n = modules[i];
			n = n.charAt(0).toUpperCase() + n.slice(1);
			mfp['init'+n].call(mfp);
		}
		_mfpTrigger('BeforeOpen');


		if(mfp.st.showCloseBtn) {
			// Close button
			if(!mfp.st.closeBtnInside) {
				mfp.wrap.append( _getCloseBtn() );
			} else {
				_mfpOn(MARKUP_PARSE_EVENT, function(e, template, values, item) {
					values.close_replaceWith = _getCloseBtn(item.type);
				});
				_wrapClasses += ' mfp-close-btn-in';
			}
		}

		if(mfp.st.alignTop) {
			_wrapClasses += ' mfp-align-top';
		}

	

		if(mfp.fixedContentPos) {
			mfp.wrap.css({
				overflow: mfp.st.overflowY,
				overflowX: 'hidden',
				overflowY: mfp.st.overflowY
			});
		} else {
			mfp.wrap.css({ 
				top: _window.scrollTop(),
				position: 'absolute'
			});
		}
		if( mfp.st.fixedBgPos === false || (mfp.st.fixedBgPos === 'auto' && !mfp.fixedContentPos) ) {
			mfp.bgOverlay.css({
				height: _document.height(),
				position: 'absolute'
			});
		}

		

		if(mfp.st.enableEscapeKey) {
			// Close on ESC key
			_document.on('keyup' + EVENT_NS, function(e) {
				if(e.keyCode === 27) {
					mfp.close();
				}
			});
		}

		_window.on('resize' + EVENT_NS, function() {
			mfp.updateSize();
		});


		if(!mfp.st.closeOnContentClick) {
			_wrapClasses += ' mfp-auto-cursor';
		}
		
		if(_wrapClasses)
			mfp.wrap.addClass(_wrapClasses);


		// this triggers recalculation of layout, so we get it once to not to trigger twice
		var windowHeight = mfp.wH = _window.height();

		
		var windowStyles = {};

		if( mfp.fixedContentPos ) {
            if(mfp._hasScrollBar(windowHeight)){
                var s = mfp._getScrollbarSize();
                if(s) {
                    windowStyles.marginRight = s;
                }
            }
        }

		if(mfp.fixedContentPos) {
			if(!mfp.isIE7) {
				windowStyles.overflow = 'hidden';
			} else {
				// ie7 double-scroll bug
				$('body, html').css('overflow', 'hidden');
			}
		}

		
		
		var classesToadd = mfp.st.mainClass;
		if(mfp.isIE7) {
			classesToadd += ' mfp-ie7';
		}
		if(classesToadd) {
			mfp._addClassToMFP( classesToadd );
		}

		// add content
		mfp.updateItemHTML();

		_mfpTrigger('BuildControls');

		// remove scrollbar, add margin e.t.c
		$('html').css(windowStyles);
		
		// add everything to DOM
		mfp.bgOverlay.add(mfp.wrap).prependTo( mfp.st.prependTo || $(document.body) );

		// Save last focused element
		mfp._lastFocusedEl = document.activeElement;
		
		// Wait for next cycle to allow CSS transition
		setTimeout(function() {
			
			if(mfp.content) {
				mfp._addClassToMFP(READY_CLASS);
				mfp._setFocus();
			} else {
				// if content is not defined (not loaded e.t.c) we add class only for BG
				mfp.bgOverlay.addClass(READY_CLASS);
			}
			
			// Trap the focus in popup
			_document.on('focusin' + EVENT_NS, mfp._onFocusIn);

		}, 16);

		mfp.isOpen = true;
		mfp.updateSize(windowHeight);
		_mfpTrigger(OPEN_EVENT);

		return data;
	},