HEX
Server: Apache/2.4.41 (Ubuntu)
System: Linux vm8 5.4.0-216-generic #236-Ubuntu SMP Fri Apr 11 19:53:21 UTC 2025 x86_64
User: afleverb (1000)
PHP: 7.4.33
Disabled: pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare,
Upload Files
File: //var/www/mussarq_bak2/wp-content/plugins/megamenu/classes/widget-manager.class.php
<?php

if ( ! defined( 'ABSPATH' ) ) {
    exit; // disable direct access
}

if ( ! class_exists('Mega_Menu_Widget_Manager') ) :

/**
 * Processes AJAX requests from the Mega Menu panel editor.
 * Also registers our widget sidebar.
 *
 * There is very little in WordPress core to help with listing, editing, saving,
 * deleting widgets etc so this class implements that functionality.
 */
class Mega_Menu_Widget_Manager {

    /**
     * Constructor
     *
     * @since 1.0
     */
    public function __construct() {

        add_action( 'wp_ajax_mm_edit_widget', array( $this, 'ajax_show_widget_form' ) );
        add_action( 'wp_ajax_mm_edit_menu_item', array( $this, 'ajax_show_menu_item_form' ) );
        add_action( 'wp_ajax_mm_save_widget', array( $this, 'ajax_save_widget' ) );
        add_action( 'wp_ajax_mm_save_menu_item', array( $this, 'ajax_save_menu_item' ) );
        add_action( 'wp_ajax_mm_update_widget_columns', array( $this, 'ajax_update_widget_columns' ) );
        add_action( 'wp_ajax_mm_update_menu_item_columns', array( $this, 'ajax_update_menu_item_columns' ) );
        add_action( 'wp_ajax_mm_delete_widget', array( $this, 'ajax_delete_widget' ) );
        add_action( 'wp_ajax_mm_add_widget', array( $this, 'ajax_add_widget' ) );
        add_action( 'wp_ajax_mm_reorder_items', array( $this, 'ajax_reorder_items' ) );
        add_action( 'wp_ajax_mm_save_grid_data', array( $this, 'ajax_save_grid_data' ) );

        add_filter( 'widget_update_callback', array( $this, 'persist_mega_menu_widget_settings'), 10, 4 );

        add_action( 'megamenu_after_widget_add', array( $this, 'clear_caches' ) );
        add_action( 'megamenu_after_widget_save', array( $this, 'clear_caches' ) );
        add_action( 'megamenu_after_widget_delete', array( $this, 'clear_caches' ) );

    }


    /**
     * Depending on how a widget has been written, it may not necessarily base the new widget settings on
     * a copy the old settings. If this is the case, the mega menu data will be lost. This function
     * checks to make sure widgets persist the mega menu data when they're saved.
     *
     * @since 1.0
     */
    public function persist_mega_menu_widget_settings( $instance, $new_instance, $old_instance, $that ) {

        if ( isset( $old_instance["mega_menu_columns"] ) && ! isset( $new_instance["mega_menu_columns"] ) ) {
            $instance["mega_menu_columns"] = $old_instance["mega_menu_columns"];
        }

        if ( isset( $old_instance["mega_menu_order"] ) && ! isset( $new_instance["mega_menu_order"] ) ) {
            $instance["mega_menu_order"] = $old_instance["mega_menu_order"];
        }

        if ( isset( $old_instance["mega_menu_parent_menu_id"] ) && ! isset( $new_instance["mega_menu_parent_menu_id"] ) ) {
            $instance["mega_menu_parent_menu_id"] = $old_instance["mega_menu_parent_menu_id"];
        }

        return $instance;
    }


    /**
     * Display a widget settings form
     *
     * @since 1.0
     */
    public function ajax_show_widget_form() {

        check_ajax_referer( 'megamenu_edit' );

        $widget_id = sanitize_text_field( $_POST['widget_id'] );

        if ( ob_get_contents() ) ob_clean(); // remove any warnings or output from other plugins which may corrupt the response

        wp_die( trim( $this->show_widget_form( $widget_id ) ) );

    }

    /**
     * Display a menu item settings form
     *
     * @since 2.7
     */
    public function ajax_show_menu_item_form() {

        check_ajax_referer( 'megamenu_edit' );

        $menu_item_id = sanitize_text_field( $_POST['widget_id'] );

        $nonce = wp_create_nonce('megamenu_save_menu_item_' . $menu_item_id);

        $saved_settings = array_filter( (array) get_post_meta( $menu_item_id, '_megamenu', true ) );
        $menu_item_meta = array_merge( Mega_Menu_Nav_Menus::get_menu_item_defaults(), $saved_settings );

        if ( ob_get_contents() ) ob_clean(); // remove any warnings or output from other plugins which may corrupt the response
        ?>

        <form method='post'>
            <input type='hidden' name='action' value='mm_save_menu_item' />
            <input type='hidden' name='menu_item_id' value='<?php echo esc_attr( $menu_item_id ) ?>' />
            <input type='hidden' name='_wpnonce'  value='<?php echo esc_attr( $nonce ) ?>' />
            <div class='widget-content'>
                <?php
                
                $css_version = get_transient("megamenu_css_version");

                if ( $css_version && version_compare( $css_version, '2.6.1', '<' ) ) {
                    $link = "<a href='" . esc_attr( admin_url( 'admin.php?page=maxmegamenu_tools' ) ) . "'>" . __("Mega Menu") . " > " . __("Tools") . "</a>";
                    $notice = "<div class='notice notice-success'><p>";
                    $notice .= sprintf( __("Your menu CSS needs to be updated before you can use the following setting. Please go to %s and Clear the CSS Cache (you will only need to do this once).", "megamenu") , $link);
                    $notice .= "</p></div>";
                    $notice .= "</div>";

                    echo $notice;
                }

                ?>

                <p>
                    <label><?php _e("Sub menu columns", "megamenu"); ?></label>

                    <select name="settings[submenu_columns]">
                        <option value='1' <?php selected( $menu_item_meta['submenu_columns'], 1, true ) ?> >1 <?php __("column", "megamenu") ?></option>
                        <option value='2' <?php selected( $menu_item_meta['submenu_columns'], 2, true ) ?> >2 <?php __("columns", "megamenu") ?></option>
                        <option value='3' <?php selected( $menu_item_meta['submenu_columns'], 3, true ) ?> >3 <?php __("columns", "megamenu") ?></option>
                        <option value='4' <?php selected( $menu_item_meta['submenu_columns'], 4, true ) ?> >4 <?php __("columns", "megamenu") ?></option>
                        <option value='5' <?php selected( $menu_item_meta['submenu_columns'], 5, true ) ?> >5 <?php __("columns", "megamenu") ?></option>
                        <option value='6' <?php selected( $menu_item_meta['submenu_columns'], 6, true ) ?> >6 <?php __("columns", "megamenu") ?></option>
                    </select>
                </p>
                <p>
                    <div class='widget-controls'>
                        <a class='close' href='#close'><?php _e("Close", "megamenu"); ?></a>
                    </div>

                    <?php
                        submit_button( __( 'Save' ), 'button-primary alignright', 'savewidget', false );
                    ?>
                </p>
            </div>
        </form>

        <?php

    }

    /**
     * Save a menu item
     *
     * @since 2.7
     */
    public function ajax_save_menu_item() {

        $menu_item_id = absint(sanitize_text_field( $_POST['menu_item_id'] ));

        check_ajax_referer( 'megamenu_save_menu_item_' . $menu_item_id );

        $submitted_settings = isset( $_POST['settings'] ) ? $_POST['settings'] : array();

        if ( $menu_item_id > 0 && is_array( $submitted_settings ) ) {

            $existing_settings = get_post_meta( $menu_item_id, '_megamenu', true);

            if ( is_array( $existing_settings ) ) {
                $submitted_settings = array_merge( $existing_settings, $submitted_settings );
            }

            update_post_meta( $menu_item_id, '_megamenu', $submitted_settings );
        }

        $this->send_json_success( sprintf( __("Saved %s", "megamenu"), $id_base ) );

    }


    /**
     * Save a widget
     *
     * @since 1.0
     */
    public function ajax_save_widget() {

        $widget_id = sanitize_text_field( $_POST['widget_id'] );
        $id_base = sanitize_text_field( $_POST['id_base'] );

        check_ajax_referer( 'megamenu_save_widget_' . $widget_id );

        $saved = $this->save_widget( $id_base );

        if ( $saved ) {
            $this->send_json_success( sprintf( __("Saved %s", "megamenu"), $id_base ) );
        } else {
            $this->send_json_error( sprintf( __("Failed to save %s", "megamenu"), $id_base ) );
        }

    }


    /**
     * Update the number of mega columns for a widget
     *
     * @since 1.0
     */
    public function ajax_update_widget_columns() {

        check_ajax_referer( 'megamenu_edit' );

        $widget_id = sanitize_text_field( $_POST['id'] );
        $columns = absint( $_POST['columns'] );

        $updated = $this->update_widget_columns( $widget_id, $columns );

        if ( $updated ) {
            $this->send_json_success( sprintf( __( "Updated %s (new columns: %d)", "megamenu"), $widget_id, $columns ) );
        } else {
            $this->send_json_error( sprintf( __( "Failed to update %s", "megamenu"), $widget_id ) );
        }

    }


    /**
     * Update the number of mega columns for a widget
     *
     * @since 1.0
     */
    public function ajax_update_menu_item_columns() {

        check_ajax_referer( 'megamenu_edit' );

        $id = absint( $_POST['id'] );
        $columns = absint( $_POST['columns'] );

        $updated = $this->update_menu_item_columns( $id, $columns );

        if ( $updated ) {
            $this->send_json_success( sprintf( __( "Updated %s (new columns: %d)", "megamenu"), $id, $columns ) );
        } else {
            $this->send_json_error( sprintf( __( "Failed to update %s", "megamenu"), $id ) );
        }

    }


    /**
     * Add a widget to the panel
     *
     * @since 1.0
     */
    public function ajax_add_widget() {

        check_ajax_referer( 'megamenu_edit' );

        $id_base = sanitize_text_field( $_POST['id_base'] );
        $menu_item_id = absint( $_POST['menu_item_id'] );
        $title = sanitize_text_field( $_POST['title'] );
        $is_grid_widget = isset( $_POST['is_grid_widget'] ) && $_POST['is_grid_widget'] == 'true';

        $added = $this->add_widget( $id_base, $menu_item_id, $title, $is_grid_widget );

        if ( $added ) {
            $this->send_json_success( $added );
        } else {
            $this->send_json_error( sprintf( __("Failed to add %s to %d", "megamenu"), $id_base, $menu_item_id ) );
        }

    }


    /**
     * Deletes a widget
     *
     * @since 1.0
     */
    public function ajax_delete_widget() {

        check_ajax_referer( 'megamenu_edit' );

        $widget_id = sanitize_text_field( $_POST['widget_id'] );

        $deleted = $this->delete_widget( $widget_id );

        if ( $deleted ) {
            $this->send_json_success( sprintf( __( "Deleted %s", "megamenu"), $widget_id ) );
        } else {
            $this->send_json_error( sprintf( __( "Failed to delete %s", "megamenu"), $widget_id ) );
        }

    }


    /**
     * Moves a widget to a new position
     *
     * @since 1.0
     */
    public function ajax_reorder_items() {

        check_ajax_referer( 'megamenu_edit' );

        $items = isset( $_POST['items'] ) ? $_POST['items'] : false;

        $saved = false;

        if ( $items ) {
            $moved = $this->reorder_items( $items );
        }

        if ( $moved ) {
            $this->send_json_success( sprintf( __( "Moved (%s)", "megamenu"), json_encode( $items ) ) );
        } else {
            $this->send_json_error( sprintf( __( "Didn't move items", "megamenu"), json_encode( $items ) ) );
        }

    }

    /**
     * Moves a widget to a new position
     *
     * @since 2.4
     */
    public function ajax_save_grid_data() {

        check_ajax_referer( 'megamenu_edit' );

        $grid = isset( $_POST['grid'] ) ? $_POST['grid'] : false;
        $parent_menu_item_id = absint( $_POST['parent_menu_item'] );

        $saved = true;

        $existing_settings = get_post_meta( $parent_menu_item_id, '_megamenu', true);

        if ( is_array( $grid ) ) {

            $submitted_settings = array_merge( $existing_settings, array('grid' => $grid ) );

        }

        update_post_meta( $parent_menu_item_id, '_megamenu', $submitted_settings );


        if ( $saved ) {
            $this->send_json_success( sprintf( __( "Saved (%s)", "megamenu"), json_encode( $grid ) ) );
        } else {
            $this->send_json_error( sprintf( __( "Didn't save", "megamenu"), json_encode( $grid ) ) );
        }

    }


    /**
     * Returns an object representing all widgets registered in WordPress
     *
     * @since 1.0
     */
    public function get_available_widgets() {
        global $wp_widget_factory;

        $widgets = array();

        foreach( $wp_widget_factory->widgets as $widget ) {

            $disabled_widgets = array('maxmegamenu');

            $disabled_widgets = apply_filters( "megamenu_incompatible_widgets", $disabled_widgets );

            if ( ! in_array( $widget->id_base, $disabled_widgets ) ) {

                $widgets[] = array(
                    'text' => $widget->name,
                    'value' => $widget->id_base
                );

            }

        }

        uasort( $widgets, array( $this, 'sort_by_text' ) );

        return $widgets;

    }


    /**
     * Sorts a 2d array by the 'text' key
     *
     * @since 1.2
     * @param array $a
     * @param array $b
     */
    function sort_by_text( $a, $b ) {
        return strcmp( $a['text'], $b['text'] );
    }


    /**
     * Sorts a 2d array by the 'order' key
     *
     * @since 2.0
     * @param array $a
     * @param array $b
     */
    function sort_by_order( $a, $b ) {

        if ($a['order'] == $b['order']) {
            return 1;
        }
        return ($a['order'] < $b['order']) ? -1 : 1;

    }


    /**
     * Returns an array of immediate child menu items for the current item
     *
     * @since 1.5
     * @return array
     */
    private function get_second_level_menu_items( $parent_menu_item_id, $menu_id, $menu_items = false ) {

        $second_level_items = array();

        // check we're using a valid menu ID
        if ( ! is_nav_menu( $menu_id ) ) {
            return $second_level_items;
        }

        if ( ! $menu_items ) {
            $menu_items = wp_get_nav_menu_items( $menu_id );
        }

        if ( count( $menu_items ) ) {

            foreach ( $menu_items as $item ) {

                // find the child menu items
                if ( $item->menu_item_parent == $parent_menu_item_id ) {

                    $saved_settings = array_filter( (array) get_post_meta( $item->ID, '_megamenu', true ) );

                    $settings = array_merge( Mega_Menu_Nav_Menus::get_menu_item_defaults(), $saved_settings );

                    $second_level_items[ $item->ID ] = array(
                        'id' => $item->ID,
                        'type' => 'menu_item',
                        'title' => $item->title,
                        'columns' => $settings['mega_menu_columns'],
                        'order' => isset( $settings['mega_menu_order'][ $parent_menu_item_id ] ) ? $settings['mega_menu_order'][ $parent_menu_item_id ] : 0
                    );

                }

            }

        }

        return $second_level_items;
    }

    /**
     * Returns an array of all widgets belonging to a specified menu item ID.
     *
     * @since 1.0
     * @param int $menu_item_id
     */
    public function get_widgets_for_menu_id( $parent_menu_item_id, $menu_id ) {

        $widgets = array();

        if ( $mega_menu_widgets = $this->get_mega_menu_sidebar_widgets() ) {

            foreach ( $mega_menu_widgets as $widget_id ) {

                $settings = $this->get_settings_for_widget_id( $widget_id );

                if ( ! isset( $settings['mega_menu_is_grid_widget'] ) && isset( $settings['mega_menu_parent_menu_id'] ) && $settings['mega_menu_parent_menu_id'] == $parent_menu_item_id ) {

                    $name = $this->get_name_for_widget_id( $widget_id );

                    $widgets[ $widget_id ] = array(
                        'id' => $widget_id,
                        'type' => 'widget',
                        'title' => $name,
                        'columns' => $settings['mega_menu_columns'],
                        'order' => isset( $settings['mega_menu_order'][ $parent_menu_item_id ] ) ? $settings['mega_menu_order'][ $parent_menu_item_id ] : 0
                    );

                }

            }

        }

        return $widgets;

    }


    /**
     * Returns an array of widgets and second level menu items for a specified parent menu item.
     * Used to display the widgets/menu items in the mega menu builder.
     *
     * @since 2.0
     * @param int $parent_menu_item_id
     * @param int $menu_id
     * @return array
     */
    public function get_widgets_and_menu_items_for_menu_id( $parent_menu_item_id, $menu_id ) {

        $menu_items = $this->get_second_level_menu_items( $parent_menu_item_id, $menu_id );

        $widgets = $this->get_widgets_for_menu_id( $parent_menu_item_id, $menu_id );

        $items = array_merge( $menu_items, $widgets );

        $parent_settings = get_post_meta( $parent_menu_item_id, '_megamenu', true );

        $ordering = isset( $parent_settings['submenu_ordering'] ) ? $parent_settings['submenu_ordering'] : 'natural';

        if ( $ordering == 'forced' ) {

            uasort( $items, array( $this, 'sort_by_order' ) );

            $new_items = $items;
            $end_items = array();

            foreach ( $items as $key => $value ) {
                if ( $value['order'] == 0 ) {
                    unset( $new_items[$key] );
                    $end_items[] = $value;
                }
            }

            $items = array_merge( $new_items, $end_items );

        }

        return $items;
    }

    /**
     * Return a sorted array of grid data representing rows, columns and items within each column.
     *
     * @param int $parent_menu_item_id
     * @param int $menu_id
     * @since 2.4
     * @return array
     */
    public function get_grid_widgets_and_menu_items_for_menu_id( $parent_menu_item_id, $menu_id, $menu_items = false ) {

        $meta = get_post_meta($parent_menu_item_id, '_megamenu', true);

        $saved_grid = array();
        
        if ( isset( $meta['grid'] ) ) {
            $saved_grid = $this->populate_saved_grid_data( $parent_menu_item_id, $menu_id, $meta['grid'], $menu_items );
        } else {
            // return empty row
            $saved_grid[0]['columns'][0]['meta']['span'] = 3;
            $saved_grid = $this->populate_saved_grid_data( $parent_menu_item_id, $menu_id, $saved_grid, $menu_items );

        }

        return $saved_grid;
    }


    /**
     * Ensure the widgets that are within the grid data still exist and have not been deleted (through the Widgets screen)
     * Ensure second level menu items saved within the grid data are still actually second level menu itms within the menu structure
     *
     * @param $saved_grid - array representing rows, columns and widgets/menu items within each column
     * @param $second_level_menu_items - array of second level menu items beneath the current menu item
     * @since 2.4
     * @return array
     */
    public function populate_saved_grid_data( $parent_menu_item_id, $menu_id, $saved_grid, $menu_items ) {

        $second_level_menu_items = $this->get_second_level_menu_items( $parent_menu_item_id, $menu_id, $menu_items );

        $menu_items_included = array();

        foreach ($saved_grid as $row => $row_data ) {
            if ( isset( $row_data['columns'] ) ) {
                foreach ( $row_data['columns'] as $col => $col_data ) {
                    if ( isset ( $col_data['items'] ) ) {
                        foreach ( $col_data['items'] as $key => $item ) {
                            if ( $item['type'] == 'item' ) {
                                $menu_items_included[] = $item['id'];
                                $is_child_of_parent = false;

                                foreach ( $second_level_menu_items as $menu_item ) {
                                    if ( $menu_item['id'] == $item['id'] ) {
                                        $is_child_of_parent = true;
                                    }
                                }

                                if ( ! $is_child_of_parent ) {
                                    unset( $saved_grid[$row]['columns'][$col]['items'][$key] ); // menu item has been deleted or moved
                                }
                            } else {
                                if ( ! $this->get_name_for_widget_id( $item['id'] ) ) {
                                    unset( $saved_grid[$row]['columns'][$col]['items'][$key] ); // widget no longer exists
                                }
                            }
                        }
                    }
                }
            }
        }

        // Find any second level menu items that have been added to the menu but are not yet within the grid data
        $orphaned_items = array();

        foreach ( $second_level_menu_items as $menu_item ) {
            if ( ! in_array($menu_item['id'], $menu_items_included ) ) {
                $orphaned_items[] = $menu_item;
            }
        }

        if ( ! isset( $saved_grid[0]['columns'][0]['items'][0])) {
            $index = 0; // grid is empty
        } else {
            $index = 999; // create new row
        }

        foreach ($orphaned_items as $key => $menu_item) {
            $saved_grid[$index]['columns'][0]['meta']['span'] = 3;
            $saved_grid[$index]['columns'][0]['items'][$key] = array(
                'id' => $menu_item['id'], 
                'type'=> 'item', 
                'title' => $menu_item['title'],
                'description' => __("Menu Item", "megamenu")
            );
        }

        if ( is_admin() ) {
            $saved_grid = $this->populate_grid_menu_item_titles( $saved_grid, $menu_id );
        }

        return $saved_grid;
    }


    /**
     * Loop through the grid data and apply titles and labels to each menu item and widget.
     *
     * @param array $saved_grid
     * @param int $menu_id
     * @since 2.4
     * @return array
     */
    public function populate_grid_menu_item_titles( $saved_grid, $menu_id ) {

        $menu_items = wp_get_nav_menu_items( $menu_id );

        $menu_item_title_map = array();

        foreach ( $menu_items as $item ) {
            $menu_item_title_map[ $item->ID ] = $item->title;
        }

        foreach ($saved_grid as $row => $row_data ) {
            if ( isset( $row_data['columns'] ) ) {
                foreach ( $row_data['columns'] as $col => $col_data ) {
                    if ( isset ( $col_data['items'] ) ) {
                        foreach ( $col_data['items'] as $key => $item ) {
                            if ( $item['type'] == 'item' ) {
                                
                                if ( isset( $menu_item_title_map[$item['id']] ) ) {
                                    $title = $menu_item_title_map[$item['id']];
                                } else {
                                    $title = __("(no label)");
                                }
                                
                                $saved_grid[$row]['columns'][$col]['items'][$key]['title'] = $title;
                                $saved_grid[$row]['columns'][$col]['items'][$key]['description'] = __("Menu Item", "megamenu");
                            } else {
                                $saved_grid[$row]['columns'][$col]['items'][$key]['title'] = $this->get_title_for_widget_id($item['id']);
                                $saved_grid[$row]['columns'][$col]['items'][$key]['description'] = $this->get_name_for_widget_id($item['id']);
                            }
                        }
                    }
                }
            }
        }

        return $saved_grid;
    }


    /**
     * Returns the widget data as stored in the options table
     *
     * @since 1.8.1
     * @param string $widget_id
     */
    public function get_settings_for_widget_id( $widget_id ) {

        $id_base = $this->get_id_base_for_widget_id( $widget_id );

        if ( ! $id_base ) {
            return false;
        }

        $widget_number = $this->get_widget_number_for_widget_id( $widget_id );

        $current_widgets = get_option( 'widget_' . $id_base );

        return $current_widgets[ $widget_number ];

    }

    /**
     * Returns the widget ID (number)
     *
     * @since 1.0
     * @param string $widget_id - id_base-ID (eg meta-3)
     * @return int
     */
    public function get_widget_number_for_widget_id( $widget_id ) {

        $parts = explode( "-", $widget_id );

        return absint( end( $parts ) );

    }

    /**
     * Returns the name/title of a Widget
     *
     * @since 1.0
     * @param $widget_id - id_base-ID (eg meta-3)
     * @return string e.g. "Custom HTML" or "Text"
     */
    public function get_name_for_widget_id( $widget_id ) {
        global $wp_registered_widgets;

        if ( ! isset( $wp_registered_widgets[$widget_id] ) ) {
            return false;
        }

        $registered_widget = $wp_registered_widgets[$widget_id];

        return $registered_widget['name'];

    }


    /**
     * Returns the title of a Widget
     *
     * @since 2.4
     * @param $widget_id - id_base-ID (eg meta-3)
     */
    public function get_title_for_widget_id( $widget_id ) {
        $instance = $this->get_settings_for_widget_id( $widget_id );

        if ( isset( $instance['title'] ) && strlen( $instance['title'] ) ) {
            return $instance['title'];
        }

        return $this->get_name_for_widget_id( $widget_id );

    }

    /**
     * Returns the id_base value for a Widget ID
     *
     * @since 1.0
     */
    public function get_id_base_for_widget_id( $widget_id ) {
        global $wp_registered_widget_controls;

        if ( ! isset( $wp_registered_widget_controls[ $widget_id ] ) ) {
            return false;
        }

        $control = $wp_registered_widget_controls[ $widget_id ];

        $id_base = isset( $control['id_base'] ) ? $control['id_base'] : $control['id'];

        return $id_base;

    }

    /**
     * Returns the HTML for a single widget instance.
     *
     * @since 1.0
     * @param string widget_id Something like meta-3
     */
    public function show_widget( $id ) {
        global $wp_registered_widgets;

        $params = array_merge(
            array( array_merge( array( 'widget_id' => $id, 'widget_name' => $wp_registered_widgets[$id]['name'] ) ) ),
            (array) $wp_registered_widgets[$id]['params']
        );

        $params[0]['id'] = 'mega-menu';
        $params[0]['before_title'] = apply_filters( "megamenu_before_widget_title", '<h4 class="mega-block-title">', $wp_registered_widgets[$id] );
        $params[0]['after_title'] = apply_filters( "megamenu_after_widget_title", '</h4>', $wp_registered_widgets[$id] );
        $params[0]['before_widget'] = apply_filters( "megamenu_before_widget", "", $wp_registered_widgets[$id] );
        $params[0]['after_widget'] = apply_filters( "megamenu_after_widget", "", $wp_registered_widgets[$id] );
        
        if ( defined("MEGAMENU_DYNAMIC_SIDEBAR_PARAMS") && MEGAMENU_DYNAMIC_SIDEBAR_PARAMS ) {
            $params[0]['before_widget'] = apply_filters( "megamenu_before_widget", '<div id="" class="">', $wp_registered_widgets[$id] );
            $params[0]['after_widget'] = apply_filters( "megamenu_after_widget", '</div>', $wp_registered_widgets[$id] );

            $params = apply_filters('dynamic_sidebar_params', $params);
        }
        
        $callback = $wp_registered_widgets[$id]['callback'];

        if ( is_callable( $callback ) ) {
            ob_start();
            call_user_func_array( $callback, $params );
            return ob_get_clean();
        }

    }


    /**
     * Returns the class name for a widget instance.
     *
     * @since 1.8.1
     * @param string widget_id Something like meta-3
     */
    public function get_widget_class( $id ) {
        global $wp_registered_widgets;

        if ( isset ( $wp_registered_widgets[$id]['classname'] ) ) {
            return $wp_registered_widgets[$id]['classname'];
        }

        return "";
    }


    /**
     * Shows the widget edit form for the specified widget.
     *
     * @since 1.0
     * @param $widget_id - id_base-ID (eg meta-3)
     */
    public function show_widget_form( $widget_id ) {
        global $wp_registered_widget_controls;

        $control = $wp_registered_widget_controls[ $widget_id ];

        $id_base = $this->get_id_base_for_widget_id( $widget_id );

        $widget_number = $this->get_widget_number_for_widget_id( $widget_id );

        $nonce = wp_create_nonce('megamenu_save_widget_' . $widget_id);

        ?>

        <form method='post'>
            <input type="hidden" name="widget-id" class="widget-id" value="<?php echo esc_attr( $widget_id ); ?>" />
            <input type='hidden' name='action'    value='mm_save_widget' />
            <input type='hidden' name='id_base'   class="id_base" value='<?php echo esc_attr( $id_base ); ?>' />
            <input type='hidden' name='widget_id' value='<?php echo esc_attr( $widget_id ) ?>' />
            <input type='hidden' name='_wpnonce'  value='<?php echo esc_attr( $nonce ) ?>' />
            <div class='widget-content'>
                <?php
                    if ( is_callable( $control['callback'] ) ) {
                        call_user_func_array( $control['callback'], $control['params'] );
                    }
                ?>

                <div class='widget-controls'>
                    <a class='delete' href='#delete'><?php _e("Delete", "megamenu"); ?></a> |
                    <a class='close' href='#close'><?php _e("Close", "megamenu"); ?></a>
                </div>

                <?php
                    submit_button( __( 'Save' ), 'button-primary alignright', 'savewidget', false );
                ?>
            </div>
        </form>
        

        <?php
    }


    /**
     * Saves a widget. Calls the update callback on the widget.
     * The callback inspects the post values and updates all widget instances which match the base ID.
     *
     * @since 1.0
     * @param string $id_base - e.g. 'meta'
     * @return bool
     */
    public function save_widget( $id_base ) {
        global $wp_registered_widget_updates;

        $control = $wp_registered_widget_updates[$id_base];

        if ( is_callable( $control['callback'] ) ) {

            call_user_func_array( $control['callback'], $control['params'] );

            do_action( "megamenu_after_widget_save" );

            return true;
        }

        return false;

    }


    /**
     * Adds a widget to WordPress. First creates a new widget instance, then
     * adds the widget instance to the mega menu widget sidebar area.
     *
     * @since 1.0
     * @param string $id_base
     * @param int $menu_item_id
     * @param string $title
     */
    public function add_widget( $id_base, $menu_item_id, $title, $is_grid_widget ) {

        require_once( ABSPATH . 'wp-admin/includes/widgets.php' );

        $next_id = next_widget_id_number( $id_base );

        $this->add_widget_instance( $id_base, $next_id, $menu_item_id, $is_grid_widget );

        $widget_id = $this->add_widget_to_sidebar( $id_base, $next_id );

        $return  = '<div class="widget" title="' . esc_attr( $title ) . '" data-columns="2" id="' . $widget_id . '" data-type="widget" data-id="' . $widget_id . '">';
        $return .= '    <div class="widget-top">';
        $return .= '        <div class="widget-title-action">';

        if ( ! $is_grid_widget ) {
            $return .= '            <a class="widget-option widget-contract" title="' . esc_attr( __("Contract", "megamenu") ) . '"></a>';
            $return .= '            <span class="widget-cols"><span class="widget-num-cols">2</span><span class="widget-of">/</span><span class="widget-total-cols">X</span></span>';
            $return .= '            <a class="widget-option widget-expand" title="' . esc_attr( __("Expand", "megamenu") ) . '"></a>';
        }

        $return .= '            <a class="widget-option widget-action" title="' . esc_attr( __("Edit", "megamenu") ) . '"></a>';
        $return .= '        </div>';
        $return .= '        <div class="widget-title">';
        $return .= '            <h4>' . esc_html( $title ) . '</h4>';
        
        if ( $is_grid_widget ) {
            $return .= '            <span class="widget-desc">' .  esc_html( $title ) . '</span>';
        }

        $return .= '        </div>';
        $return .= '    </div>';
        $return .= '    <div class="widget-inner widget-inside"></div>';
        $return .= '</div>';

        return $return;

    }


    /**
     * Adds a new widget instance of the specified base ID to the database.
     *
     * @since 1.0
     * @param string $id_base
     * @param int $next_id
     * @param int $menu_item_id
     */
    private function add_widget_instance( $id_base, $next_id, $menu_item_id, $is_grid_widget ) {

        $current_widgets = get_option( 'widget_' . $id_base );

        $current_widgets[ $next_id ] = array(
            "mega_menu_columns" => 2,
            "mega_menu_parent_menu_id" => $menu_item_id
        );

        if ( $is_grid_widget ) {
            $current_widgets[ $next_id ] = array(
                "mega_menu_is_grid_widget" => 'true'
            );
        }

        update_option( 'widget_' . $id_base, $current_widgets );

    }

    /**
     * Removes a widget instance from the database
     *
     * @since 1.0
     * @param string $widget_id e.g. meta-3
     * @return bool. True if widget has been deleted.
     */
    private function remove_widget_instance( $widget_id ) {

        $id_base = $this->get_id_base_for_widget_id( $widget_id );
        $widget_number = $this->get_widget_number_for_widget_id( $widget_id );

        // add blank widget
        $current_widgets = get_option( 'widget_' . $id_base );

        if ( isset( $current_widgets[ $widget_number ] ) ) {

            unset( $current_widgets[ $widget_number ] );

            update_option( 'widget_' . $id_base, $current_widgets );

            return true;

        }

        return false;

    }


    /**
     * Updates the number of mega columns for a specified widget.
     *
     * @since 1.0
     * @param string $widget_id
     * @param int $columns
     */
    public function update_widget_columns( $widget_id, $columns ) {

        $id_base = $this->get_id_base_for_widget_id( $widget_id );

        $widget_number = $this->get_widget_number_for_widget_id( $widget_id );

        $current_widgets = get_option( 'widget_' . $id_base );

        $current_widgets[ $widget_number ]["mega_menu_columns"] = absint( $columns) ;

        update_option( 'widget_' . $id_base, $current_widgets );

        do_action( "megamenu_after_widget_save" );

        return true;

    }


    /**
     * Updates the number of mega columns for a specified widget.
     *
     * @since 1.10
     * @param string $menu_item_id
     * @param int $columns
     */
    public function update_menu_item_columns( $menu_item_id, $columns ) {

        $existing_settings = get_post_meta( $menu_item_id, '_megamenu', true);

        $submitted_settings = array(
            'mega_menu_columns' => absint( $columns )
        );

        if ( is_array( $existing_settings ) ) {
            $submitted_settings = array_merge( $existing_settings, $submitted_settings );
        }

        update_post_meta( $menu_item_id, '_megamenu', $submitted_settings );

        return true;

    }


    /**
     * Updates the order of a specified widget.
     *
     * @since 1.10
     * @param string $widget_id
     * @param int $columns
     */
    public function update_widget_order( $widget_id, $order, $parent_menu_item_id ) {

        $id_base = $this->get_id_base_for_widget_id( $widget_id );

        $widget_number = $this->get_widget_number_for_widget_id( $widget_id );

        $current_widgets = get_option( 'widget_' . $id_base );

        $current_widgets[ $widget_number ]["mega_menu_order"] = array( $parent_menu_item_id => absint( $order ) );

        update_option( 'widget_' . $id_base, $current_widgets );

        return true;

    }


    /**
     * Updates the order of a specified menu item.
     *
     * @since 1.10
     * @param string $menu_item_id
     * @param int $order
     */
    public function update_menu_item_order( $menu_item_id, $order, $parent_menu_item_id ) {

        $submitted_settings['mega_menu_order'] = array( $parent_menu_item_id => absint( $order ) );

        $existing_settings = get_post_meta( $menu_item_id, '_megamenu', true);

        if ( is_array( $existing_settings ) ) {

            $submitted_settings = array_merge( $existing_settings, $submitted_settings );

        }

        update_post_meta( $menu_item_id, '_megamenu', $submitted_settings );

        return true;

    }


    /**
     * Deletes a widget from WordPress
     *
     * @since 1.0
     * @param string $widget_id e.g. meta-3
     */
    public function delete_widget( $widget_id ) {

        $this->remove_widget_from_sidebar( $widget_id );
        $this->remove_widget_instance( $widget_id );

        do_action( "megamenu_after_widget_delete" );

        return true;

    }


    /**
     * Moves a widget from one position to another.
     *
     * @since 1.10
     * @param array $items
     * @return string $widget_id. The widget that has been moved.
     */
    public function reorder_items( $items ) {

        foreach ( $items as $item ) {

            if ( $item['parent_menu_item'] ) {

                $submitted_settings = array( 'submenu_ordering' => 'forced' );

                $existing_settings = get_post_meta( $item['parent_menu_item'], '_megamenu', true );

                if ( is_array( $existing_settings ) ) {

                    $submitted_settings = array_merge( $existing_settings, $submitted_settings );

                }

                update_post_meta( $item['parent_menu_item'], '_megamenu', $submitted_settings );
            }

            if ( $item['type'] == 'widget' ) {

                $this->update_widget_order( $item['id'], $item['order'], $item['parent_menu_item'] );

            }

            if ( $item['type'] == 'menu_item' ) {

                $this->update_menu_item_order( $item['id'], $item['order'], $item['parent_menu_item'] );

            }

        }

        return true;

    }


    /**
     * Adds a widget to the Mega Menu widget sidebar
     *
     * @since 1.0
     */
    private function add_widget_to_sidebar( $id_base, $next_id ) {

        $widget_id = $id_base . '-' . $next_id;

        $sidebar_widgets = $this->get_mega_menu_sidebar_widgets();

        $sidebar_widgets[] = $widget_id;

        $this->set_mega_menu_sidebar_widgets($sidebar_widgets);

        do_action( "megamenu_after_widget_add" );

        return $widget_id;

    }


    /**
     * Removes a widget from the Mega Menu widget sidebar
     *
     * @since 1.0
     * @return string The widget that was removed
     */
    private function remove_widget_from_sidebar($widget_id) {

        $widgets = $this->get_mega_menu_sidebar_widgets();

        $new_mega_menu_widgets = array();

        foreach ( $widgets as $widget ) {

            if ( $widget != $widget_id )
                $new_mega_menu_widgets[] = $widget;

        }

        $this->set_mega_menu_sidebar_widgets($new_mega_menu_widgets);

        return $widget_id;

    }


    /**
     * Returns an unfiltered array of all widgets in our sidebar
     *
     * @since 1.0
     * @return array
     */
    public function get_mega_menu_sidebar_widgets() {

        $sidebar_widgets = wp_get_sidebars_widgets();

        if ( ! isset( $sidebar_widgets[ 'mega-menu'] ) ) {
            return false;
        }

        return $sidebar_widgets[ 'mega-menu' ];

    }


    /**
     * Sets the sidebar widgets
     *
     * @since 1.0
     */
    private function set_mega_menu_sidebar_widgets( $widgets ) {

        $sidebar_widgets = wp_get_sidebars_widgets();

        $sidebar_widgets[ 'mega-menu' ] = $widgets;

        wp_set_sidebars_widgets( $sidebar_widgets );

    }


    /**
     * Clear the cache when the Mega Menu is updated.
     *
     * @since 1.0
     */
    public function clear_caches() {

        // https://wordpress.org/plugins/widget-output-cache/
        if ( function_exists( 'menu_output_cache_bump' ) ) {
            menu_output_cache_bump();
        }

        // https://wordpress.org/plugins/widget-output-cache/
        if ( function_exists( 'widget_output_cache_bump' ) ) {
            widget_output_cache_bump();
        }

    }


    /**
     * Send JSON response.
     *
     * Remove any warnings or output from other plugins which may corrupt the response
     *
     * @param string $json
     * @since 1.8
     */
    public function send_json_success( $json ) {
        if ( ob_get_contents() ) ob_clean();

        wp_send_json_success( $json );
    }


    /**
     * Send JSON response.
     *
     * Remove any warnings or output from other plugins which may corrupt the response
     *
     * @param string $json
     * @since 1.8
     */
    public function send_json_error( $json ) {
        if ( ob_get_contents() ) ob_clean();

        wp_send_json_error( $json );
    }

}

endif;