Updated Class

[admin/class-admin-init.php]
* Added woocommerce_screen_ids
* Removed Admin Notice Handler Class Init
* Added Plugins Settings Page ID To WC Screen ID

[admin/class-admin-settings.php & admin/class-donation-settings.php]
* Working To Get A Prefect Settings Page

[admin/includes/class-admin-functions.php]
* Changed WC_QD()->donation_id to WC_QD_ID

[includes/class-quick-donation-process.php]
* Created Class To Process Front End Donation Form

[includes/class-shortcode-handler.php]
* Created 2 Actions
1. wc_quick_donation_before_donation_form
2. wc_quick_donation_after_donation_form

[woocommerce-quick-donation.php]
* Changed $donation_id from dynimic to static
* Added WC_QD_ID defined variable
* Rearranged Few Loading Files

admin/class-admin-init.php

@@ -28,17 +28,19 @@ class WooCommerce_Quick_Donation_Admin  {
         add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
         add_action( 'admin_init', array( $this, 'init_admin_class' ));
         add_action( 'plugins_loaded', array( $this, 'init' ) );
-
         add_filter( 'plugin_row_meta', array($this, 'plugin_row_links' ), 10, 2 );
-        add_filter( 'woocommerce_get_settings_pages',  array($this,'settings_page') ); 
+        
+        add_filter('woocommerce_screen_ids',array($this,'set_wc_screen_ids'));
+        
+        
 	}
 
+    
     /**
      * Inits Admin Sttings
      */
     public function init_admin_class(){
         $this->functions =  new WooCommerce_Quick_Donation_Admin_Function;
-        //$this->notice = new WordPress_Admin_Notice_Handler;
        # new WooCommerce_Plugin_Boiler_Plate_Admin_Settings;
     }
  
@@ -73,6 +75,13 @@ class WooCommerce_Quick_Donation_Admin  {
  
 	}
     
+    public function set_wc_screen_ids($screen){
+       
+        $screen[] = 'wcqd_project_page_wc_qd_settings';
+        
+        return $screen;
+    }    
+    
     /**
      * Gets Current Screen ID from wordpress
      * @return string [Current Screen ID]
@@ -90,6 +99,7 @@ class WooCommerce_Quick_Donation_Admin  {
         $screen_ids = array();
         $screen_ids[] = 'edit-product';
         $screen_ids[] = 'product';
+        $screen_ids[] = 'wcqd_project_page_wc_qd_settings';
         return $screen_ids;
     }
     

admin/includes/class-admin-functions.php

@@ -33,10 +33,7 @@ class WooCommerce_Quick_Donation_Admin_Function {
 	public function protect_donation_product($actions,$post) {
         
 		if('product' == $post->post_type) {  
-            
-            
-            
-			if($post->ID == WC_QD()->donation_id){
+			if($post->ID == WC_QD_ID){
 				unset($actions['inline hide-if-no-js']);
 				unset($actions['trash']);
 				unset($actions['duplicate']);

includes/class-quick-donation-process.php

+<?php
+/**
+ * functionality of the plugin.
+ * @author  Varun Sridharan <varunsridharan23@gmail.com>
+ */
+if ( ! defined( 'WPINC' ) ) { die; }
+
+class WooCommerce_Quick_Donation_Process extends WooCommerce_Quick_Donation  {
+
+    public $is_donation_exists = false;
+        
+    function __construct(){
+        parent::__construct();
+       // add_action( 'wp_loaded',array($this,'on_wp_loaded'),20); 
+        add_filter( 'woocommerce_get_price', array($this,'get_price'),10,2);
+    }
+    
+    public function on_wp_loaded(){
+        if($this->check_donation_exists_cart()){ $this->is_donation_exists = true; } 
+        
+        $this->process_donation(); 
+    }
+    
+     
+    public function process_donation(){
+        if(isset($_POST['donation_add'])){
+            global $woocommerce;
+            $donation = isset($_POST['wc_qd_donate_project_price']) ? $_POST['wc_qd_donate_project_price'] : false;
+			$projects = isset($_POST['wc_qd_donate_project_name']) && !empty($_POST['wc_qd_donate_project_name']) ? $_POST['wc_qd_donate_project_name'] : false;
+            $donate_price = floatval($donation);
+            $woocommerce->session->jc_donation = $donate_price;
+            $woocommerce->session->projects = $projects;
+            $woocommerce->cart->add_to_cart(self::$donation_id);
+            
+        }
+    }
+    
+    /**
+     * Checks If Donation Product Exists In Cart
+     */
+    public function check_donation_exists_cart(){
+        global $woocommerce;
+        $found = false;
+        if( sizeof($woocommerce->cart->get_cart()) > 0){
+            foreach($woocommerce->cart->get_cart() as $cart_item_key=>$values){
+                $_product = $values['data'];
+                if($_product->id == self::$donation_id)
+                    $found = true;
+            }
+
+        }
+        return $found;
+    }   
+    
+    
+	/**
+	 * Gets Donation Current Price
+	 * @param  $price 
+	 * @param  $product 
+	 * @returns 0 | price
+	 */
+	public function get_price($price, $product){
+		global $woocommerce;
+        
+        if($this->is_donation_exists){
+            if($product->id == self::$donation_id){ 
+                return isset($woocommerce->session->jc_donation) ? floatval($woocommerce->session->jc_donation) : 0; 
+            }
+        }
+		return $price;
+	}	    
+}
+
+
+
+
+    
\ No newline at end of file

includes/class-shortcode-handler.php

@@ -24,14 +24,16 @@ class WooCommerce_Quick_Donation_Shortcode {
     public function shortcode_handler($settings){
         global $donation_box,$donation_price,$currency;
         $settings = shortcode_atts( array(
-        'type' => 'radio',
-        'grouped' => true,
+        'type' => 'select',
+        'grouped' => false,
         ), $settings );
         
         $donation_box = WC_QD()->f()->generate_donation_selbox($settings['grouped'],$settings['type']);
         $donation_price =  WC_QD()->f()->generate_price_box();
         $currency = get_woocommerce_currency_symbol();
+        do_action('wc_quick_donation_before_doantion_form',$settings['type'],$settings['grouped']);
         WC_QD()->f()->load_template('donation_form.php',WC_QD_TEMPLATE);
+        do_action('wc_quick_donation_after_doantion_form',$settings['type'],$settings['grouped']);
     }
 
 }
\ No newline at end of file

woocommerce-quick-donation.php

@@ -28,7 +28,7 @@ class WooCommerce_Quick_Donation {
     public static $is_donation_product_exist = true;
     protected static $f = null;
     public static $shortcode = null;
-    public $donation_id = null;
+    public static $donation_id = null;
 
     /**
      * Creates or returns an instance of this class.
@@ -45,7 +45,10 @@ class WooCommerce_Quick_Donation {
      */
     public function __construct() {
         $this->define_constant();
-        $this->donation_id = get_option(WC_QD_DB.'product_id');
+        self::$donation_id = get_option(WC_QD_DB.'product_id');
+        
+        $this->define('WC_QD_ID',intval(get_option(WC_QD_DB.'product_id')));
+        
         $this->load_required_files();
         
         register_activation_hook( __FILE__,array('WC_QD_INSTALL','INIT') );
@@ -79,7 +82,9 @@ class WooCommerce_Quick_Donation {
 
         $this->load_files(WC_QD_PATH.'includes/class-install.php');
         $this->load_files(WC_QD_PATH.'includes/class-quick-donation-functions.php');
+        $this->load_files(WC_QD_PATH.'includes/class-quick-donation-process.php');
         $this->load_files(WC_QD_PATH.'includes/class-shortcode-handler.php');
+        
         if($this->is_request('admin')){
            $this->load_files(WC_QD_PATH.'admin/class-*.php');
         } 
@@ -92,6 +97,7 @@ class WooCommerce_Quick_Donation {
     private function init_class(){
         self::$f = new WooCommerce_Quick_Donation_Functions;
         self::$shortcode = new WooCommerce_Quick_Donation_Shortcode;
+        $this->donation = new WooCommerce_Quick_Donation_Process;
         
         if($this->is_request('admin')){
             $this->admin = new WooCommerce_Quick_Donation_Admin;