File admin/admin.php

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<?php

namespace SIW\Admin;

use SIW\Admin\User_Columns;
use SIW\Properties;

/**
 * Aanpassingen aan Admin
 * 
 * @copyright 2019 SIW Internationale Vrijwilligersprojecten
 * @since     3.0.0
 */
class Admin {

    /**
     * Init
     */
    public static function init() {
        $self = new self();
        
        add_action( 'admin_enqueue_scripts', [ $self, 'enqueue_admin_style'] );
        add_action( 'admin_menu', [ $self, 'hide_pages'], PHP_INT_MAX );
        add_action( 'admin_init', [ $self, 'hide_dashboard_widgets'] );
        add_filter( 'admin_footer_text', [ $self, 'set_admin_footer_text'] );
        add_filter( 'manage_pages_columns', [ $self, 'remove_pages_columns'] );
        add_action( 'admin_menu', [ $self, 'remove_page_metaboxes' ] ); 
        add_action( 'admin_menu', [ $self, 'change_menu_items' ], PHP_INT_MAX );
        add_filter( 'show_admin_bar', '__return_false' );
        add_action( 'admin_init', [ $self, 'add_user_columns'], 20 );
        
        remove_action( 'try_gutenberg_panel', 'wp_try_gutenberg_panel' );
        remove_action( 'welcome_panel', 'wp_welcome_panel' );
    }

    /**
     * Voegt admin-styling toe
     */
    public function enqueue_admin_style() {
        wp_register_style( 'siw-admin', SIW_ASSETS_URL . 'css/admin/siw-admin.css', [], SIW_PLUGIN_VERSION );
        wp_enqueue_style( 'siw-admin' );
    }

    /**
     * Verwijdert standaard menu-items
     */
    public function hide_pages() {
        remove_menu_page( 'edit-comments.php' );
        remove_menu_page( 'edit.php' );
        remove_menu_page( 'link-manager.php' );
        if ( ! current_user_can( 'manage_options' ) ) {
            remove_menu_page( 'wppusher');//Kan dit niet weg?
        }
    }

    /**
     * Verbergt standaard dashboard widgets
     */
    public function hide_dashboard_widgets() {
        remove_meta_box( 'dashboard_quick_press', 'dashboard', 'side' );
        remove_meta_box( 'dashboard_activity', 'dashboard', 'normal' );
        remove_meta_box( 'dashboard_right_now', 'dashboard', 'normal' );
        remove_meta_box( 'dashboard_primary', 'dashboard', 'normal' );
    }
    
    /**
     * Voegt copyright toe aan admin footer
     *
     * @return string
     */
    public function set_admin_footer_text() {
        return sprintf( '&copy; %s %s', date( 'Y' ), Properties::NAME );
    }

    /**
     * Verbergt admin-column voor pagina's
     *
     * @param array $columns
     * @return array
     */
    public function remove_pages_columns( array $columns ) {
        unset( $columns['comments'] );
        unset( $columns['author'] );
        return $columns;
    }

    /**
     * Verwijdert diverse metaboxes
     */
    public function remove_page_metaboxes() {
        remove_meta_box( 'postcustom' , 'page' , 'normal' ); 
        remove_meta_box( 'commentstatusdiv' , 'page' , 'normal' ); 
        remove_meta_box( 'commentsdiv' , 'page' , 'normal' ); 
        remove_meta_box( 'slugdiv' , 'page' , 'normal' ); 
        remove_meta_box( 'authordiv' , 'page' , 'normal' ); 
    }

    /**
     * Zoekt menu-item o.b.v. slug
     *
     * @param string $slug
     * @param array $menu
     * @return string
     */
    protected function menu_search( string $slug, array $menu ) {
        $menu_item = wp_list_filter(
            $menu,
            [ 2 => $slug ]
        );
        return ! empty( $menu_item ) ? key( $menu_item ) : null;
    }

    /**
     * Past diverse menu-items aan
     */
    public function change_menu_items() {
        global $menu;
    
        $bbq = $this->menu_search( 'bbq_settings', $menu );
        if ( $bbq ) {
            $menu[ $bbq ][6] = 'dashicons-shield-alt';
        }
    
        $kt = $this->menu_search( 'ktoptions', $menu );
        if ( $kt ) {
            $menu[ $kt ][6] ='data:image/png;base64,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';
        }
    }

    /**
     * Voegt extra admin columns toe
     */
    public function add_user_columns() {
        if ( ! class_exists( '\MB_Admin_Columns_User' ) ) {
            return;
        }
        new User_Columns( 'user', [] );
    }

}

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