Gallery.prototype.init = function()

in _includes/scripts/lib/gallery.js [37:137]
65 lines of code
10 McCabe index (conditional complexity)

    Gallery.prototype.init = function() {
      var i, item, items = this.items, size, self = this, touchstartFingerCount = 0;
      this.$root.append(template);
      this.$swiper = this.$root.find('.gallery__swiper');
      this.$swiperWrapper = this.$root.find('.swiper__wrapper');
      this.contentWidth = this.$swiperWrapper && this.$swiperWrapper.width();
      this.contentHeight = this.$swiperWrapper && this.$swiperWrapper.height();
      for (i = 0; i < items.length; i++) {
        item = items[i];
        size = this._calculateImageSize(item.w, item.h);
        this.$items.push($(
          '<div class="swiper__slide">' +
            '<div class="gallery-item">' +
              '<div class="gallery-item__content">' +
                '<img src="' + item.src + '" style="width:' + size.w + 'px;height:' + size.h +  'px"/>' +
              '</div>' +
            '</div>' +
          '</div>'
        ));
      }
      this.$swiperWrapper && this.$swiperWrapper.append(this.$items);
      this.swiper = this.$swiper && this.$swiper.swiper({
        onChangeEnd: function() {
          self._handleChangeEnd.apply(self, Array.prototype.slice.call(arguments));
        }
      });
      $(window).on('resize', function() {
        if (self.disabled) { return; }
        self._resizeImageSize();
      });
      // Char Code: 37  ⬅, 39  ➡
      $(window).on('keyup', function(e) {
        if (window.isFormElement(e.target || e.srcElement) || self.disabled) { return; }
        if (e.which === 37) {
          self.swiper && self.swiper.previous();
        } else if (e.which === 39) {
          self.swiper && self.swiper.next();
        }
      });
      function getRect(touch0, touch1) {
        return {
          o: {
            x: (touch0.pageX + touch1.pageX) / 2,
            y: (touch0.pageY + touch1.pageY) / 2
          },
          w: Math.abs(touch0.pageX - touch1.pageX),
          h: Math.abs(touch0.pageY - touch1.pageY)
        };
      }
      function getTouches(e) {
        return e.touches || e;
      }
      function getTouchesCount(e) {
        if (e.touches) {
          return e.touches.length;
        } else {
          return 1;
        }
      }
      this.$swiperWrapper.on('touchstart', function(e) {
        var touch0, touch1, rect;
        touchstartFingerCount = getTouchesCount(e);
        if (touchstartFingerCount > 1) {
          touch0 = e.touches[0];
          touch1 = e.touches[1];
          rect = getRect(touch0, touch1);
          self.lastZoomRect = { w: rect.w, h: rect.h };
          self.lastTouchCenter = rect.o;
        } else {
          var touch = getTouches(e)[0];
          self.lastTouchCenter = { x: touch.pageX, y: touch.pageY };
        }
      });
      this.$swiperWrapper.on('touchmove', function(e) {
        if (touchstartFingerCount === getTouchesCount(e)) {
          if (touchstartFingerCount > 1) {
            var touch0 = e.touches[0];
            var touch1 = e.touches[1];
            var rect = getRect(touch0, touch1);
            self.zoomRect = { w: rect.w, h: rect.h };
            self.touchCenter = rect.o;
            self._zoom(); self._translate();
            setState(self.$activeItem, self.zoom, self.translate);
          } else {
            var touch = getTouches(e)[0];
            self.touchCenter = { x: touch.pageX, y: touch.pageY };
            self._translate();
            setState(self.$activeItem, self.zoom, self.translate);
          }
        }
      });
      this.$swiperWrapper.on('touchend', function(e) {
        self.lastZoom = self.zoom;
        self.lastTranslate = self.translate;
        touchstartFingerCount = 0;
      });
      this.$root.on('touchmove', function(e) {
        if (self.disabled) { return; }
        e.preventDefault();
      });
    };