Storefront JS

Guppy follows the standard Shopware storefront JS pattern: PluginBase classes with a lifecycle, registration with PluginManager, selector-based activation via data-* attributes. This page covers architecture, bundled plugins, configuration, and how to write your own.

• Plugin architecture
  • Registration
  • Initialisation via data-* attributes
• Bundled plugins
  • SplideSliderPlugin
  • UspBannerPlugin
  • ProductBoxClickPlugin
  • CustomCheckoutPlugin
  • QuantitySelectorPlugin (override)
  • Other plugins
• Splide configuration
  • Events
• ProductBoxClickPlugin
• Write your own plugin
  • Plugin template
  • Register the plugin
  • Use the plugin
• Debugging
  • Common issues
• Related

Plugin architecture

Registration

// New plugins
PluginManager.register('SplideSliderPlugin', SplideSliderPlugin);
PluginManager.register('ProductBoxClickPlugin', ProductBoxClickPlugin);

// Plugin overrides (lazy imports possible)
PluginManager.override('QuantitySelector', () => import('./js/quantity-selector.plugin'));

Initialisation via data-* attributes

<div data-splide-slider-plugin="true"
     data-splide-slider-plugin-options='{...}'>

Bundled plugins

SplideSliderPlugin

Modern slider based on Splide.js: replaces Shopware's default Tiny Slider.

Features: better performance, full keyboard navigation, screen-reader support, touch gestures, responsive.

export default class SplideSliderPlugin extends Plugin {
    static options = {
        splideSnippets: ""
    }

    init() {
        this._mountSlider(this.el, this.options.splideSnippets);
    }

    _mountSlider(element, options) {
        var splideSlider = new Splide(element, {
            i18n: options
        }).mount();

        const splideOptions = Object.getPrototypeOf(splideSlider.options);
        if (splideOptions.autoplay === "pause") {
            splideSlider.Components.Autoplay.play();
        }
    }
}

Usage:

<div class="splide" data-splide-slider-plugin="true">
    <div class="splide__track">
        <ul class="splide__list">
            <li class="splide__slide">Slide 1</li>
            <li class="splide__slide">Slide 2</li>
        </ul>
    </div>
</div>

UspBannerPlugin

No longer part of the theme. As of Guppy 2.8.0 the USP banner lives in the DmfUspBanner plugin, which registers its own storefront plugin and turns the benefits into a slider through window.DmfSplide once they no longer fit side by side.

ProductBoxClickPlugin

Extends the product box with fully clickable cards plus keyboard support.

Features: full-box click target, keyboard support, correct focus management, event delegation.

CustomCheckoutPlugin

Improves the checkout experience (validation, progress tracking, auto-save, error handling).

<div class="checkout-main" data-custom-checkout-plugin="true">

QuantitySelectorPlugin (override)

Extends Shopware's quantity selector: input validation, arrow-key navigation, ARIA labels, smooth animations.

Other plugins

Plugin	Purpose
RemoveExtraH1Plugin	SEO, removes redundant H1 tags after DOM load.
DeliveryInformationMarginPlugin	Dynamic margin adjustment for delivery information.
SplideSliderGalleryPlugin	Extended gallery with thumbnail sync and zoom.
CollapseFooterColumnsPlugin (override)	Accordion footer on mobile.

Splide configuration

All Splide.js options are available.

<div class="splide"
     data-splide-slider-plugin="true"
     data-splide-slider-plugin-options='{
       "type": "loop",
       "perPage": 4,
       "perMove": 1,
       "gap": "1rem",
       "pagination": false,
       "arrows": true,
       "autoplay": true,
       "interval": 5000,
       "pauseOnHover": true,
       "breakpoints": {
         "1024": { "perPage": 3 },
         "768": { "perPage": 2 },
         "576": { "perPage": 1 }
       }
     }'>

Option	Type	Default	Description
type	string	slide	slide, loop, fade
perPage	number	1	Visible slides
perMove	number	1	Slides per move
gap	string	0	Gap between slides
arrows	boolean	true	Navigation arrows
pagination	boolean	true	Pagination dots
autoplay	boolean	false	Auto play
interval	number	5000	Autoplay interval (ms)
pauseOnHover	boolean	true	Pause on hover
rewind	boolean	false	Rewind to start
speed	number	400	Animation speed (ms)
easing	string	cubic-bezier(0.25, 1, 0.5, 1)	Easing function

Events

document.addEventListener('DOMContentLoaded', () => {
    const splideEl = document.querySelector('.splide');
    const splide = splideEl._splide;

    if (splide) {
        splide.on('move', (newIndex, prevIndex) => {
            console.log(`Moved from ${prevIndex} to ${newIndex}`);
        });

        splide.on('mounted', () => console.log('Slider mounted'));
        splide.on('autoplay:play', () => console.log('Autoplay started'));
        splide.on('autoplay:pause', () => console.log('Autoplay paused'));
    }
});

ProductBoxClickPlugin

export default class ProductBoxClickPlugin extends Plugin {
    static options = {
        excludeSelectors: '.btn, .product-action, .wishlist-button, input, select',
        linkSelector: '.product-name a, .product-image-link'
    }

    init() {
        this.el.addEventListener('click', this._onClick.bind(this));
        this.el.addEventListener('keydown', this._onKeydown.bind(this));
    }

    _onClick(event) {
        if (event.target.closest(this.options.excludeSelectors)) {
            return;
        }

        const link = this.el.querySelector(this.options.linkSelector);
        if (link) {
            link.click();
        }
    }

    _onKeydown(event) {
        if (event.key === 'Enter' || event.key === ' ') {
            this._onClick(event);
        }
    }
}

Write your own plugin

Plugin template

import Plugin from 'src/plugin-system/plugin.class';

export default class MyCustomPlugin extends Plugin {
    static options = {
        myOption: 'default-value',
        anotherOption: true
    };

    init() {
        this._registerEvents();
    }

    _registerEvents() {
        this.el.addEventListener('click', this._onClick.bind(this));
    }

    _onClick(event) {
        console.log('Clicked!', this.options.myOption);
    }

    destroy() {
        // Cleanup
    }
}

Register the plugin

// main.js
import MyCustomPlugin from './plugins/my-custom-plugin';

window.PluginManager.register('MyCustomPlugin', MyCustomPlugin, '[data-my-custom-plugin]');

Use the plugin

<div data-my-custom-plugin="true"
     data-my-custom-plugin-options='{"myOption": "custom-value"}'>
    <!-- content -->
</div>

Debugging

// Get a plugin instance
const element = document.querySelector('[data-splide-slider-plugin]');
const pluginInstance = window.PluginManager.getPluginInstanceFromElement(element, 'SplideSliderPlugin');

// Inspect options
console.log(pluginInstance.options);

// All registered plugins
console.log(window.PluginManager.getPluginList());

Common issues

Problem	Cause	Fix
Plugin doesn't load	JS error	Check the browser console
Slider shows no slides	wrong HTML structure	Verify Splide classes
Events don't fire	plugin not initialised	wait for DOMContentLoaded
Autoplay doesn't work	autoplay: "pause" set	change to true

Related

• Architecture: plugin structure and build output (dist/storefront/js/).
• Twig Overrides: set data-* attributes correctly from templates.
• DmfSplideSlider: shared slider component consumed by many custom elements.