Add Modern Admin Colors feature to customize admin color scheme

includes/class-wp-allstars-admin-colors.php

@@ -0,0 +1,98 @@
+<?php
+/**
+ * WP ALLSTARS Admin Colors Feature
+ *
+ * Handles setting the admin color scheme based on user preferences
+ *
+ * @package WP_ALLSTARS
+ * @since 0.2.3
+ */
+
+if (!defined('ABSPATH')) {
+    exit; // Exit if accessed directly
+}
+
+/**
+ * Admin Colors Handler Class
+ */
+class WP_Allstars_Admin_Colors {
+    
+    /**
+     * Option name for the admin color scheme setting
+     *
+     * @var string
+     */
+    private $option_name = 'wp_allstars_simple_setting';
+    
+    /**
+     * Modern color scheme key
+     *
+     * @var string
+     */
+    private $modern_scheme = 'modern';
+    
+    /**
+     * Default color scheme key
+     *
+     * @var string
+     */
+    private $default_scheme = 'fresh';
+    
+    /**
+     * Initialize the class and set up hooks
+     */
+    public function __construct() {
+        // Set up hooks
+        add_action('admin_init', array($this, 'set_admin_color_scheme'));
+        add_action('wp_ajax_wp_allstars_update_option', array($this, 'handle_color_scheme_update'), 5);
+    }
+    
+    /**
+     * Set the admin color scheme based on the setting value
+     */
+    public function set_admin_color_scheme() {
+        // Get current user
+        $user_id = get_current_user_id();
+        if (!$user_id) {
+            return;
+        }
+        
+        // Check if our setting is enabled
+        $modern_colors_enabled = get_option($this->option_name, false);
+        
+        // Get the scheme to set
+        $scheme = $modern_colors_enabled ? $this->modern_scheme : $this->default_scheme;
+        
+        // Update user meta to set the color scheme
+        update_user_meta($user_id, 'admin_color', $scheme);
+    }
+    
+    /**
+     * Handle color scheme update via AJAX
+     * Runs early to apply the color scheme change before the general option update handler
+     */
+    public function handle_color_scheme_update() {
+        // Check for required params
+        if (!isset($_POST['option']) || !isset($_POST['value'])) {
+            return;
+        }
+        
+        // Only process our specific option
+        if ($_POST['option'] !== $this->option_name) {
+            return;
+        }
+        
+        // Get the current user ID
+        $user_id = get_current_user_id();
+        if (!$user_id) {
+            return;
+        }
+        
+        // Determine which scheme to set based on the value
+        $value = (bool) $_POST['value'];
+        $scheme = $value ? $this->modern_scheme : $this->default_scheme;
+        
+        // Update the user's color scheme
+        update_user_meta($user_id, 'admin_color', $scheme);
+    }
+}