swiper/esm/components/core/breakpoints/setBreakpoint.js

Most modern mobile touch slider and framework with hardware accelerated transitions

import { extend } from '../../../utils/utils';
export default function setBreakpoint() {
  var swiper = this;
  var activeIndex = swiper.activeIndex,
      initialized = swiper.initialized,
      _swiper$loopedSlides = swiper.loopedSlides,
      loopedSlides = _swiper$loopedSlides === void 0 ? 0 : _swiper$loopedSlides,
      params = swiper.params,
      $el = swiper.$el;
  var breakpoints = params.breakpoints;
  if (!breakpoints || breakpoints && Object.keys(breakpoints).length === 0) return; // Get breakpoint for window width and update parameters

  var breakpoint = swiper.getBreakpoint(breakpoints, swiper.params.breakpointsBase, swiper.el);
  if (!breakpoint || swiper.currentBreakpoint === breakpoint) return;
  var breakpointOnlyParams = breakpoint in breakpoints ? breakpoints[breakpoint] : undefined;

  if (breakpointOnlyParams) {
    ['slidesPerView', 'spaceBetween', 'slidesPerGroup', 'slidesPerGroupSkip', 'slidesPerColumn'].forEach(function (param) {
      var paramValue = breakpointOnlyParams[param];
      if (typeof paramValue === 'undefined') return;

      if (param === 'slidesPerView' && (paramValue === 'AUTO' || paramValue === 'auto')) {
        breakpointOnlyParams[param] = 'auto';
      } else if (param === 'slidesPerView') {
        breakpointOnlyParams[param] = parseFloat(paramValue);
      } else {
        breakpointOnlyParams[param] = parseInt(paramValue, 10);
      }
    });
  }

  var breakpointParams = breakpointOnlyParams || swiper.originalParams;
  var wasMultiRow = params.slidesPerColumn > 1;
  var isMultiRow = breakpointParams.slidesPerColumn > 1;
  var wasEnabled = params.enabled;
  var isEnabled = breakpointParams.enabled;

  if (wasMultiRow && !isMultiRow) {
    $el.removeClass(params.containerModifierClass + "multirow " + params.containerModifierClass + "multirow-column");
    swiper.emitContainerClasses();
  } else if (!wasMultiRow && isMultiRow) {
    $el.addClass(params.containerModifierClass + "multirow");

    if (breakpointParams.slidesPerColumnFill === 'column') {
      $el.addClass(params.containerModifierClass + "multirow-column");
    }

    swiper.emitContainerClasses();
  }

  var directionChanged = breakpointParams.direction && breakpointParams.direction !== params.direction;
  var needsReLoop = params.loop && (breakpointParams.slidesPerView !== params.slidesPerView || directionChanged);

  if (directionChanged && initialized) {
    swiper.changeDirection();
  }

  extend(swiper.params, breakpointParams);
  extend(swiper, {
    allowTouchMove: swiper.params.allowTouchMove,
    allowSlideNext: swiper.params.allowSlideNext,
    allowSlidePrev: swiper.params.allowSlidePrev
  });

  if (wasEnabled && !isEnabled) {
    swiper.disable();
  } else if (!wasEnabled && isEnabled) {
    swiper.enable();
  }

  swiper.currentBreakpoint = breakpoint;
  swiper.emit('_beforeBreakpoint', breakpointParams);

  if (needsReLoop && initialized) {
    swiper.loopDestroy();
    swiper.loopCreate();
    swiper.updateSlides();
    swiper.slideTo(activeIndex - loopedSlides + swiper.loopedSlides, 0, false);
  }

  swiper.emit('breakpoint', breakpointParams);
}