=== SS Dynamic Filter for Oxygen ===
Contributors: shemuls
Donate link: https://shemuls.com
Tags: oxygen builder, filter, ajax filter, woocommerce filter, faceted search
Requires at least: 5.8
Tested up to: 6.9
Requires PHP: 7.4
Stable tag: 1.0.1
License: GPLv2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html

Professional AJAX filtering for Oxygen Builder. Features database indexing, SEO-friendly URLs, and native elements.

== Description ==

**SS Dynamic Filter for Oxygen** is a filtering solution for developers using Oxygen Builder. Unlike generic filter plugins that require shortcodes, this plugin provides **native Oxygen Elements** that you can drag, drop, and style directly inside the builder.

Most importantly, it includes a **Database Indexer** and **SEO-Friendly URL Rewrites**.

### 🚀 Key Features

* **⚡ Database Indexer:** We index your product data into a custom database table. This ensures filtering remains fast.
* **🔗 SEO-Friendly URLs:** Automatically transforms ugly query strings (`?color=red`) into clean, indexable permalinks (`/filter/color-red/`).
* **🎨 Native Oxygen Elements:** Drag and drop filter elements directly in the Oxygen editor. Full control over typography, spacing, colors, and layout via Oxygen's style controls.
* **🔍 AJAX Search:** Include a live search bar that updates grid results instantly.
* **🎚️ Dual-Handle Price Slider:** Professional price range slider using `noUiSlider`.
* **🏷️ Active Chips:** Display active filters as removable chips/tags.
* **🎨 Color Swatches:** Turn any attribute into visual color swatches.
* **🔄 Hybrid Filtering:** Updates the browser URL for SEO while using robust AJAX fetching for compatibility.

### 🧩 Included Elements

1.  **Dynamic Filter:** The core element to display Checkboxes, Radio Buttons, Buttons, Color Swatches, Dropdowns, Price Ranges, or Search inputs.
2.  **Active Filters (Chips):** Displays the currently selected filters with a "Clear All" option.

== Installation ==

1.  Upload the plugin files to the `/wp-content/plugins/ss-dynamic-filter-for-oxygen` directory, or install the plugin through the WordPress plugins screen.
2.  Activate the plugin through the 'Plugins' screen in WordPress.
3.  **IMPORTANT:** Go to **Filters > Add New** to create your first filter.
4.  **CRITICAL:** After creating filters, click the **"Index All Products Now"** button in the filter settings metabox. This builds the database index required for filtering.
5.  Open any template in Oxygen Builder and add the **"Dynamic Filter"** element.

== Frequently Asked Questions ==

= Why are my filters showing "No results found"? =
This plugin uses a custom database index for performance. You must go to the Filter settings page in the admin dashboard and click **"Index All Products Now"**. You need to do this whenever you add a new Filter Type. (New products are indexed automatically on save).

= Why do the filter URLs give a 404 error? =
If you see a 404 error on pages like `/filter/color-red/`, you need to flush your permalinks. Go to **Settings > Permalinks** in your WordPress dashboard and simply click **"Save Changes"**. This registers the new URL structure.

= Does this work with WooCommerce? =
Yes! It is fully compatible with WooCommerce products, attributes, and prices.

= Does this work with Custom Post Types (CPT) and ACF? =
Yes. You can filter any public Custom Post Type by any Taxonomy (Categories, Tags, or Custom Taxonomies created via ACF/CPT UI).

== Screenshots ==

1.  **Admin Settings:** The clean interface for configuring filters and running the high-performance indexer.
2.  **Oxygen Builder:** Dragging and dropping the native filter element with full style controls.
3.  **Frontend Example:** A shop page featuring Color Swatches, Price Slider, and Active Chips.

== Changelog ==

= 1.0.1 =
* Security Fix: Implemented strict Late Escaping for all echoed variables.
* Security Fix: Hardened JSON encoding in admin HTML attributes.
* Security Fix: Implemented wp_kses for strict HTML output sanitization.
* Update: Fixed Text Domain to match plugin slug 'ss-dynamic-filter-for-oxygen'.

= 1.0.0 =
* Initial Release. Features: AJAX Filtering, Indexer, URL Rewrites, Search, and Oxygen Native Elements.

== Upgrade Notice ==

= 1.0.1 =
Mandatory security update. Fixed escaping and sanitization issues per review team feedback.

= 1.0.0 =
Initial release.