Dawn Product Gallery

main-product.liquid

{% comment %}theme-check-disable TemplateLength{% endcomment %}
{{ 'section-main-product.css' | asset_url | stylesheet_tag }}
{{ 'component-accordion.css' | asset_url | stylesheet_tag }}
{{ 'component-badge.css' | asset_url | stylesheet_tag }}
{{ 'component-price.css' | asset_url | stylesheet_tag }}
{{ 'component-rte.css' | asset_url | stylesheet_tag }}
{{ 'component-slider.css' | asset_url | stylesheet_tag }}

<link rel="stylesheet" href="{{ 'component-cart-notification.css' | asset_url }}" media="print" onload="this.media='all'">
<link rel="stylesheet" href="{{ 'component-deferred-media.css' | asset_url }}" media="print" onload="this.media='all'">

<script src="{{ 'product-form.js' | asset_url }}" defer="defer"></script>
<script src="{{ 'product-gallery.js' | asset_url }}" defer="defer"></script>

{%- assign first_3d_model = product.media | where: "media_type", "model" | first -%}
{%- if first_3d_model -%}
  {{ 'component-product-model.css' | asset_url | stylesheet_tag }}
  <link id="ModelViewerStyle" rel="stylesheet" href="https://cdn.shopify.com/shopifycloud/model-viewer-ui/assets/v1.0/model-viewer-ui.css" media="print" onload="this.media='all'">
  <link id="ModelViewerOverride" rel="stylesheet" href="{{ 'component-model-viewer-ui.css' | asset_url }}" media="print" onload="this.media='all'">
{%- endif -%}

<section class="page-width">
  <div class="product grid grid--1-col {% if product.media.size > 0 %}grid--2-col-tablet{% else %}product--no-media{% endif %}">
    <div class="grid__item product__media-wrapper">
      <product-gallery class="product-gallery">
        {%- if product.media.size > 1 -%}
        <ul class="product-gallery__nav">
          {%- for media in product.media -%}
            <li class="product-gallery__nav-item {% if media.id == product.selected_or_first_available_variant.featured_media.id %}product-gallery__nav-item--active{% endif %}" data-media-id="{{ media.id }}">
              {% render 'product-thumbnail', media: media, position: forloop.index, loop: section.settings.enable_video_looping, modal_id: section.id %}
            </li>
          {%- endfor -%}
        </ul>
        {%- endif -%}
        <div class="product-gallery__images">
          {%- for media in product.media -%}
            <div class="product-gallery__image {% if media.id == product.selected_or_first_available_variant.featured_media.id or product.media.size == 1 %}product-gallery__image--active{% endif %}" data-media-id="{{ media.id }}">
              {% render 'product-thumbnail', media: media %}
            </div>
          {%- endfor -%}
          <button type="button" class="slider-button slider-button--prev" name="previous" aria-label="{{ 'accessibility.previous_slide' | t }}">{% render 'icon-caret' %}</button>
          <button type="button" class="slider-button slider-button--next" name="next" aria-label="{{ 'accessibility.next_slide' | t }}">{% render 'icon-caret' %}</button>
        </div>
      </product-gallery>
    </div>
    <div class="product__info-wrapper grid__item">
      <div id="ProductInfo-{{ section.id }}" class="product__info-container{% if section.settings.enable_sticky_info %} product__info-container--sticky{% endif %}">
        {%- assign product_form_id = 'product-form-' | append: section.id -%}

        {%- for block in section.blocks -%}
          {%- case block.type -%}
          {%- when '@app' -%}
            {% render block %}
          {%- when 'text' -%}
            <p class="product__text{% if block.settings.text_style == 'uppercase' %} caption-with-letter-spacing{% elsif block.settings.text_style == 'subtitle' %} subtitle{% endif %}" {{ block.shopify_attributes }}>
              {{- block.settings.text -}}
            </p>
          {%- when 'title' -%}
            <h1 class="product__title" {{ block.shopify_attributes }}>
              {{ product.title | escape }}
            </h1>
          {%- when 'price' -%}
            <div class="no-js-hidden" id="price-{{ section.id }}" {{ block.shopify_attributes }}>
              {%- render 'price', product: product, use_variant: true, show_badges: true, price_class: 'price--large' -%}
            </div>
            <div {{ block.shopify_attributes }}>
              {%- form 'product', product, id: 'product-form-installment', class: 'installment caption-large' -%}
                <input type="hidden" name="id" value="{{ product.selected_or_first_available_variant.id }}">
                {{ form | payment_terms }}
              {%- endform -%}
            </div>
          {%- when 'description' -%}
            {%- if product.description != blank -%}
              <div class="product__description rte">
                {{ product.description }}
              </div>
            {%- endif -%}
          {%- when 'collapsible_tab' -%}
            <div class="product__accordion accordion" {{ block.shopify_attributes }}>
              <details>
                <summary>
                  <div class="summary__title">
                    {% render 'icon-accordion', icon: block.settings.icon %}
                    <h2 class="h4 accordion__title">
                      {{ block.settings.heading | default: block.settings.page.title }}
                    </h2>
                  </div>
                  {% render 'icon-caret' %}
                </summary>
                <div class="accordion__content rte">
                  {{ block.settings.content }}
                  {{ block.settings.page.content }}
                </div>
              </details>
            </div>
          {%- when 'quantity_selector' -%}
            <div class="product-form__input product-form__quantity" {{ block.shopify_attributes }}>
              <label class="form__label" for="Quantity-{{ section.id }}">
                {{ 'products.product.quantity.label' | t }}
              </label>
              <quantity-input class="quantity">
                <button class="quantity__button no-js-hidden" name="minus" type="button">
                  <span class="visually-hidden">{{ 'products.product.quantity.decrease' | t: product: product.title | escape }}</span>
                  {% render 'icon-minus' %}
                </button>
                <input class="quantity__input"
                    type="number"
                    name="quantity"
                    id="Quantity-{{ section.id }}"
                    min="1"
                    value="1"
                    form="product-form-{{ section.id }}"
                  >
                <button class="quantity__button no-js-hidden" name="plus" type="button">
                  <span class="visually-hidden">{{ 'products.product.quantity.increase' | t: product: product.title | escape }}</span>
                  {% render 'icon-plus' %}
                </button>
              </quantity-input>
            </div>
          {%- when 'popup' -%}
              <modal-opener class="product-popup-modal__opener no-js-hidden" data-modal="#PopupModal-{{ block.id }}" {{ block.shopify_attributes }}>
                <button id="ProductPopup-{{ block.id }}" class="product-popup-modal__button link" type="button" aria-haspopup="dialog">{{ block.settings.link_label | default: block.settings.page.title }}</button>
              </modal-opener>
              <a href="{{ block.settings.page.url }}" class="product-popup-modal__button link no-js">{{ block.settings.link_label }}</a>
          {%- when 'share' -%}
            <share-button class="share-button" {{ block.shopify_attributes }}>
              <button class="share-button__button button button--tertiary hidden">
                {% render 'icon-share' %}
                {{ 'general.share.share' | t }}
              </button>
              <details>
                <summary class="share-button__button button button--tertiary">
                  {% render 'icon-share' %}
                  {{ 'general.share.share' | t }}
                </summary>
                <div class="share-button__fallback">
                  <div class="field">
                    <input type="text"
                          class="field__input"
                          id="url"
                          value="{{ shop.url | append: product.url }}"
                          placeholder="{{ 'general.share.share_url' | t }}"
                          onclick="this.select();"
                          readonly
                    >
                    <label class="field__label" for="url">{{ 'general.share.share_url' | t }}</label>
                  </div>
                  <button class="button button--tertiary">
                    {% render 'icon-clipboard' %}
                    {{ 'general.share.copy_to_clipboard' | t }}
                  </button>
                  <span id="ShareMessage-{{ section.id }}" class="share-button__message hidden" role="status" aria-hidden="true">
                    {{ 'general.share.success_message' | t }}
                  </span>
                </div>
              </details>
            </share-button>
            <script src="{{ 'share.js' | asset_url }}" defer="defer"></script>
          {%- when 'variant_picker' -%}
            {%- unless product.has_only_default_variant -%}
              {%- if block.settings.picker_type == 'button' -%}
                <variant-radios class="no-js-hidden" data-section="{{ section.id }}" data-url="{{ product.url }}" {{ block.shopify_attributes }}>
                  {%- for option in product.options_with_values -%}
                      <fieldset class="js product-form__input">
                        <legend class="form__label">{{ option.name }}</legend>
                        {%- for value in option.values -%}
                          <input type="radio" id="{{ section.id }}-{{ option.name }}-{{ forloop.index0 }}"
                                name="{{ option.name }}"
                                value="{{ value | escape }}"
                                form="product-form-{{ section.id }}"
                                {% if option.selected_value == value %}checked{% endif %}
                          >
                          <label for="{{ section.id }}-{{ option.name }}-{{ forloop.index0 }}">
                            {{ value }}
                          </label>
                        {%- endfor -%}
                      </fieldset>
                  {%- endfor -%}
                  <script type="application/json">
                    {{ product.variants | json }}
                  </script>
                </variant-radios>
              {%- else -%}
                <variant-selects class="no-js-hidden" data-section="{{ section.id }}" data-url="{{ product.url }}" {{ block.shopify_attributes }}>
                  {%- for option in product.options_with_values -%}
                    <div class="product-form__input product-form__input--dropdown">
                      <label class="form__label" for="Option-{{ section.id }}-{{ forloop.index0 }}">
                        {{ option.name }}
                      </label>
                      <div class="select">
                        <select id="Option-{{ section.id }}-{{ forloop.index0 }}"
                          class="select__select"
                          name="options[{{ option.name | escape }}]"
                          form="product-form-{{ section.id }}"
                        >
                          {%- for value in option.values -%}
                            <option value="{{ value | escape }}" {% if option.selected_value == value %}selected="selected"{% endif %}>
                              {{ value }}
                            </option>
                          {%- endfor -%}
                        </select>
                        {% render 'icon-caret' %}
                      </div>
                    </div>
                  {%- endfor -%}

                  <script type="application/json">
                    {{ product.variants | json }}
                  </script>
                </variant-selects>
              {%- endif -%}
            {%- endunless -%}

            <noscript>
              <div class="product-form__input{% if product.has_only_default_variant %} hidden{% endif %}">
                <label class="form__label" for="Variants-{{ section.id }}">{{ 'products.product.product_variants' | t }}</label>
                <div class="select">
                  <select name="id" id="Variants-{{ section.id }}" class="select__select" form="product-form">
                    {%- for variant in product.variants -%}
                      <option
                        {% if variant == product.selected_or_first_available_variant %}selected="selected"{% endif %}
                        {% if variant.available == false %}disabled{% endif %}
                        value="{{ variant.id }}"
                      >
                        {{ variant.title }}
                        {%- if variant.available == false %} - {{ 'products.product.sold_out' | t }}{% endif %}
                        - {{ variant.price | money | strip_html }}
                      </option>
                    {%- endfor -%}
                  </select>
                  {% render 'icon-caret' %}
                </div>
              </div>
            </noscript>
          {%- when 'buy_buttons' -%}
            <div {{ block.shopify_attributes }}>
              <product-form class="product-form">
                {%- form 'product', product, id: product_form_id, class: 'form', novalidate: 'novalidate', data-type: 'add-to-cart-form' -%}
                  <input type="hidden" name="id" value="{{ product.selected_or_first_available_variant.id }}">
                  <div class="product-form__buttons">
                    <button
                      type="submit"
                      name="add"
                      class="product-form__submit button button--full-width {% if block.settings.show_dynamic_checkout and product.selling_plan_groups == empty %}button--secondary{% else %}button--primary{% endif %}"
                    {% if product.selected_or_first_available_variant.available == false %}disabled{% endif %}
                    >
                        {%- if product.selected_or_first_available_variant.available -%}
                          {{ 'products.product.add_to_cart' | t }}
                        {%- else -%}
                          {{ 'products.product.sold_out' | t }}
                        {%- endif -%}
                    </button>
                    {%- if block.settings.show_dynamic_checkout -%}
                      {{ form | payment_button }}
                    {%- endif -%}
                  </div>
                {%- endform -%}
              </product-form>
            </div>
            <div class="product__accordion accordion">
              <details>
                <summary>
                  <div class="summary__title">
                    {% render 'icon-accordion', icon: 'ruler' %}
                    <h2 class="h4 accordion__title">
                      Size Guide
                    </h2>
                  </div>
                  {% render 'icon-caret' %}
                </summary>
                <div class="accordion__content rte">
                  <div id="size-guide"></div>
                </div>
              </details>
            </div>
            <div class="product__accordion accordion">
              <details>
                <summary>
                  <div class="summary__title">
                    {% render 'icon-accordion', icon: 'price_tag' %}
                    <h2 class="h4 accordion__title">
                      Materials &amp; Care
                    </h2>
                  </div>
                  {% render 'icon-caret' %}
                </summary>
                <div class="accordion__content">
                  {{ product.metafields.custom_fields.materials }}
                </div>
              </details>
            </div>
          {%- endcase -%}
        {%- endfor -%}
      </div>
    </div>
  </div>
  {%- render 'cart-notification' -%}

  {% assign popups = section.blocks | where: "type", "popup" %}
  {%- for block in popups -%}
    <modal-dialog id="PopupModal-{{ block.id }}" class="product-popup-modal" {{ block.shopify_attributes }}>
      <div role="dialog" aria-label="{{ block.settings.link_label }}" aria-modal="true" class="product-popup-modal__content" tabindex="-1">
        <button id="ModalClose-{{ block.id }}" type="button" class="product-popup-modal__toggle" aria-label="{{ 'accessibility.close' | t }}">{% render 'icon-close' %}</button>
        <div class="product-popup-modal__content-info">
          <h1 class="h2">{{ block.settings.page.title }}</h1>
          {{ block.settings.page.content }}
        </div>
      </div>
    </modal-dialog>
  {%- endfor -%}
</section>

{% javascript %}
  class ProductModal extends ModalDialog {
    constructor() {
      super();
    }

    hide() {
      super.hide();
      window.pauseAllMedia();
    }

    show(opener) {
      super.show(opener);
      this.showActiveMedia();
    }

    showActiveMedia() {
      this.querySelectorAll(`[data-media-id]:not([data-media-id="${this.openedBy.getAttribute("data-media-id")}"])`).forEach((element) => {
          element.classList.remove('active');
        }
      )
      const activeMedia = this.querySelector(`[data-media-id="${this.openedBy.getAttribute("data-media-id")}"]`);
      activeMedia.classList.add('active');
      activeMedia.scrollIntoView();

      if (activeMedia.nodeName == 'DEFERRED-MEDIA' && activeMedia.querySelector('template')?.content?.querySelector('.js-youtube'))
        activeMedia.loadContent();
    }
  }

  customElements.define('product-modal', ProductModal);
{% endjavascript %}

{%- if first_3d_model -%}
  <script type="application/json" id="ProductJSON-{{ product.id }}">
    {{ product.media | where: 'media_type', 'model' | json }}
  </script>

  <script src="{{ 'product-model.js' | asset_url }}" defer></script>
{%- endif -%}

{% schema %}
{
  "name": "t:sections.main-product.name",
  "tag": "section",
  "class": "product-section spaced-section",
  "blocks": [
    {
      "type": "@app"
    },
    {
      "type": "text",
      "name": "t:sections.main-product.blocks.text.name",
      "settings": [
        {
          "type": "text",
          "id": "text",
          "default": "Text block",
          "label": "t:sections.main-product.blocks.text.settings.text.label"
        },
        {
          "type": "select",
          "id": "text_style",
          "options": [
            {
              "value": "body",
              "label": "t:sections.main-product.blocks.text.settings.text_style.options__1.label"
            },
            {
              "value": "subtitle",
              "label": "t:sections.main-product.blocks.text.settings.text_style.options__2.label"
            },
            {
              "value": "uppercase",
              "label": "t:sections.main-product.blocks.text.settings.text_style.options__3.label"
            }
          ],
          "default": "body",
          "label": "t:sections.main-product.blocks.text.settings.text_style.label"
        }
      ]
    },
    {
      "type": "title",
      "name": "t:sections.main-product.blocks.title.name",
      "limit": 1
    },
    {
      "type": "price",
      "name": "t:sections.main-product.blocks.price.name",
      "limit": 1
    },
    {
      "type": "quantity_selector",
      "name": "t:sections.main-product.blocks.quantity_selector.name",
      "limit": 1
    },
    {
      "type": "variant_picker",
      "name": "t:sections.main-product.blocks.variant_picker.name",
      "limit": 1,
      "settings": [
        {
          "type": "select",
          "id": "picker_type",
          "options": [
            {
              "value": "dropdown",
              "label": "t:sections.main-product.blocks.variant_picker.settings.picker_type.options__1.label"
            },
            {
              "value": "button",
              "label": "t:sections.main-product.blocks.variant_picker.settings.picker_type.options__2.label"
            }
          ],
          "default": "button",
          "label": "t:sections.main-product.blocks.variant_picker.settings.picker_type.label"
        }
      ]
    },
    {
      "type": "buy_buttons",
      "name": "t:sections.main-product.blocks.buy_buttons.name",
      "limit": 1,
      "settings": [
        {
          "type": "checkbox",
          "id": "show_dynamic_checkout",
          "default": true,
          "label": "t:sections.main-product.blocks.buy_buttons.settings.show_dynamic_checkout.label",
          "info": "t:sections.main-product.blocks.buy_buttons.settings.show_dynamic_checkout.info"
        }
      ]
    },
    {
      "type": "description",
      "name": "t:sections.main-product.blocks.description.name",
      "limit": 1
    },
    {
      "type": "share",
      "name": "t:sections.main-product.blocks.share.name",
      "limit": 1,
      "settings": [
        {
          "type": "paragraph",
          "content": "t:sections.main-product.blocks.share.settings.featured_image_info.content"
        },
        {
          "type": "paragraph",
          "content": "t:sections.main-product.blocks.share.settings.title_info.content"
        }
      ]
    },
    {
      "type": "collapsible_tab",
      "name": "t:sections.main-product.blocks.collapsible_tab.name",
      "settings": [
        {
          "type": "text",
          "id": "heading",
          "default": "Collapsible tab",
          "info": "t:sections.main-product.blocks.collapsible_tab.settings.heading.info",
          "label": "t:sections.main-product.blocks.collapsible_tab.settings.heading.label"
        },
        {
          "type": "richtext",
          "id": "content",
          "label": "t:sections.main-product.blocks.collapsible_tab.settings.content.label"
        },
        {
          "type": "page",
          "id": "page",
          "label": "t:sections.main-product.blocks.collapsible_tab.settings.page.label"
        },
        {
          "type": "select",
          "id": "icon",
          "options": [
            {
              "value": "none",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__1.label"
            },
            {
              "value": "box",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__2.label"
            },
            {
              "value": "chat_bubble",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__3.label"
            },
            {
              "value": "check_mark",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__4.label"
            },
            {
              "value": "dryer",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__5.label"
            },
            {
              "value": "eye",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__6.label"
            },
            {
              "value": "heart",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__7.label"
            },
            {
              "value": "iron",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__8.label"
            },
            {
              "value": "leaf",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__9.label"
            },
            {
              "value": "leather",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__10.label"
            },
            {
              "value": "lock",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__11.label"
            },
            {
              "value": "map_pin",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__12.label"
            },
            {
              "value": "pants",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__13.label"
            },
            {
              "value": "plane",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__14.label"
            },
            {
              "value": "price_tag",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__15.label"
            },
            {
              "value": "question_mark",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__16.label"
            },
            {
              "value": "return",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__17.label"
            },
            {
              "value": "ruler",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__18.label"
            },
            {
              "value": "shirt",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__19.label"
            },
            {
              "value": "shoe",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__20.label"
            },
            {
              "value": "silhouette",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__21.label"
            },
            {
              "value": "star",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__22.label"
            },
            {
              "value": "truck",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__23.label"
            },
            {
              "value": "washing",
              "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.options__24.label"
            }
          ],
          "default": "check_mark",
          "label": "t:sections.main-product.blocks.collapsible_tab.settings.icon.label"
        }
      ]
    },
    {
      "type": "popup",
      "name": "t:sections.main-product.blocks.popup.name",
      "settings": [
        {
          "type": "text",
          "id": "link_label",
          "default": "Pop-up link text",
          "label": "t:sections.main-product.blocks.popup.settings.link_label.label"
        },
        {
          "id": "page",
          "type": "page",
          "label": "t:sections.main-product.blocks.popup.settings.page.label"
        }
      ]
    }
  ],
  "settings": [
    {
      "type": "header",
      "content": "t:sections.main-product.settings.header.content",
      "info": "t:sections.main-product.settings.header.info"
    },
    {
      "type": "checkbox",
      "id": "enable_sticky_info",
      "default": true,
      "label": "t:sections.main-product.settings.enable_sticky_info.label"
    },
    {
      "type": "checkbox",
      "id": "enable_video_looping",
      "default": false,
      "label": "t:sections.main-product.settings.enable_video_looping.label"
    }
  ]
}
{% endschema %}

product-gallery.js

class ProductGallery extends HTMLElement {
  constructor() {
    super();
    this.init()

    const resizeObserver = new ResizeObserver(entries => this.update());
    resizeObserver.observe(this);

    this.navItems.forEach(item => item.addEventListener('click', this.onNavItemClick.bind(this)))
    this.prevButton.addEventListener('click', this.onButtonClick.bind(this));
    this.nextButton.addEventListener('click', this.onButtonClick.bind(this));
    window.addEventListener('message', this.onVariantChange.bind(this))
  }

  init() {
    this.imagesContainer = this.querySelector('.product-gallery__images');
    this.navItems = this.querySelectorAll('.product-gallery__nav-item');
    this.images = this.querySelectorAll('.product-gallery__image');
    this.prevButton = this.querySelector('button[name="previous"]');
    this.nextButton = this.querySelector('button[name="next"]');
    if (this.findCurrentIndex() === -1) {
      this.setCurrentImage(this.images[0])
    }
  }

  onVariantChange(event) {
    if (!event.data || event.data.type !== 'variant_changed') return 
    const currentImage = Array.from(this.images).find(item => item.dataset.mediaId == event.data.variant.featured_media.id)
    if (currentImage) {
      this.setCurrentImage(currentImage)
    }
  }

  onNavItemClick(event) {
    const mediaId = event.target.closest('li').dataset.mediaId
    this.images.forEach(item => item.classList.remove('product-gallery__image--active'))
    this.setCurrentImage(Array.from(this.images).find(item => item.dataset.mediaId === mediaId))
  }

  update() {
    this.style.height = `${this.imagesContainer.offsetHeight}px`
    this.prevButton.removeAttribute('disabled')
    this.nextButton.removeAttribute('disabled')
    if (this.findCurrentIndex() === 0) this.prevButton.setAttribute('disabled', true)
    if (this.findCurrentIndex() === this.images.length - 1) this.nextButton.setAttribute('disabled', true)
  }

  setCurrentImage(elem) {
    this.images.forEach(item => item.classList.remove('product-gallery__image--active'))
    elem.classList.add('product-gallery__image--active')
    this.update()
  }

  findCurrentIndex() {
    return Array.from(this.images).findIndex(item => item.classList.contains('product-gallery__image--active'))
  }

  onButtonClick(event) {
    event.preventDefault();
    let index = this.findCurrentIndex()
    if (event.currentTarget.name === 'next') {
      index++
    } else {
      index--
    }
    this.setCurrentImage(this.images[index])
  }
}

customElements.define('product-gallery', ProductGallery);

section-main-product.css

.product-gallery {
  display: flex;
}
.product-gallery .slider-button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}
.product-gallery .slider-button:not([disabled]):hover {
  border-color: rgba(var(--color-foreground), 0.3);
}
.product-gallery .slider-button:disabled {
  display: none;
}
.product-gallery .slider-button--prev {
  left: 0;
  border-left-width: 0;
}
.product-gallery .slider-button--next {
  right: 0;
  border-right-width: 0;
}
.product-gallery__nav {
  width: 140px;
  list-style: none;
  margin: 0 .5rem 0 0;
  padding: 0;
  height: 100%;
  overflow-y: auto;
  display: none;
}
.product-gallery__nav::-webkit-scrollbar { 
  display: none; 
}
.product-gallery__nav-item {
  display: block;
  cursor: pointer;
}
.product-gallery__nav-item + .product-gallery__nav-item {
  margin-top: .5rem;
}
.product-gallery__nav-item img {
  width: 100%;
  display: block;
}
.product-gallery__images {
  flex-grow: 1;
  height: fit-content;
  position: relative;
}
.product-gallery__image {
  display: none;
}
.product-gallery__image--active {
  display: block;
}
@media screen and (min-width: 750px) {
  .product-gallery__nav {
    display: block;
  }
}