ATMC-Custom-Metabox.php

ATMC-custom-metabox.php

<?php
     /*
    /
   /   ATMC Custom Metabox      /
  /                            /
 /   A-Train Marketing        /
/                            /
   Version 0.1.5            /
                          */

class ATMC_Custom_Metabox {
  protected $title = '';
  protected $slug = '';
  protected $post_types = array();
  protected $post_id = 0;
  protected $context = '';
  protected $priority = '';
  protected $render_style = 'default';
  protected $Fields = array(
    '_atmc-cm-text'     => array(
                                  'displayName' => 'Text',
                                  'type'        => 'text',
                                  'value'       => 'Default basic text'
                                ),
    '_atmc-cm-checkbox' => array(
                                  'displayName' => 'Checkbox',
                                  'type'        => 'checkbox',
                                  'value'       => ''
                                ),
    '_atmc-cm-dropdown' => array(
                                  'displayName' => 'Dropdown',
                                  'type'        => 'dropdown',
                                  'value'       => array(
                                                          1 => 'Item 1',
                                                          2 => 'Item 2',
                                                          3 => 'Item 3'
                                                        )
                                )
  );

  // not currently used
  private $post_data = '';
  private $settings = array();

  function __construct( $args ) {

    if( count($args) == 7 ) {

      // Error: not currently supporting all 7 args
      return;
    } else if($args) {

      $title = $args[0];
      $slug = $args[1];
      $post_types = $args[2];
      $context = $args[3];
      $priority = $args[4];

    } else {
      return;
    }

    if( $slug == '' || $context == '' || $priority == '' ) {
      return;
    }
    if( $title == '' ) {
      $this->title = ucfirst( $slug );
    }
    if( empty( $post_types ) ) {
      $this->post_types = array('post');
    }
    if($context == '') {
      $this->context = 'advanced';
    }
    if($priority == '') {
      $this->priority == 'high';
    }

    $this->title = $title; 
    $this->slug = $slug;
    $this->post_types = $post_types;
    $this->settings_id = $this->slug; 
    $this->context = $context;
    $this->priority = $priority;
    add_action( 'add_meta_boxes', array( $this, 'register' ) );
    add_action( 'save_post', array( $this, 'save_meta_settings' ) );
  }

  public function register( $post_type ) {

    if ( in_array( $post_type, $this->post_types ) ) {

      add_meta_box( $this->slug, $this->title, array( $this, 'render' ), $post_type, $this->context, $this->priority, null );
    }
  }

  public function render( $post ) {

    $this->post_id = $post->ID;

    wp_nonce_field( 'metabox_' . $this->slug, 'metabox_' . $this->slug . '_nonce' );

    echo '<div class="atmc_metabox_wrapper"';
    $this->render_fields( $this->render_style ); 
    echo '</div>';
  }

  public function save_meta_settings( $post_id ) {

    if ( ! isset( $_POST['metabox_' . $this->slug . '_nonce'] ) ) {
      return $post_id;
    }

    $nonce = $_POST['metabox_' . $this->slug . '_nonce'];

    if ( ! wp_verify_nonce( $nonce, 'metabox_' . $this->slug ) ) {
      return $post_id;
    }

    if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
      return $post_id;
    }

    if ( 'page' == $_POST['post_type'] ) {
      if ( ! current_user_can( 'edit_page', $post_id ) ) {
        return $post_id;
      }
    } else {
      if ( ! current_user_can( 'edit_post', $post_id ) ) {
        return $post_id;
      }
    }

    $this->post_id = $post_id;
    $this->post_data = $_POST;

    $this->save_settings();
  }

  public function save_settings() {

    foreach( $this->Fields as $key => $field ) {
      update_post_meta( $this->post_id, $key, $_POST[$key] );
    }    

  }

  public function render_fields($render_style) {

    foreach( $this->Fields as $key => $field ) {

      $value = get_post_meta( $this->post_id, $key, true);

      wp_nonce_field( plugin_basename(__FILE__),'exl_noncename' );

      switch($render_style) {

        case 'default':

          echo '<div>';
          echo '<label for="'. $key .'">'. $field['displayName'] .'<br>';

          switch( $field['type'] ) {

            case 'text':

              echo '<input name="'. $key .'" type="text" name="'. $key .'" value="' . esc_attr( $value ) . '"/>';
              break;

            case 'dropdown':

              echo '<select name="'. $key .'">';

              foreach( $field['value'] as $dropdown_key => $dropdown_value ) {

                $selected = false;
                
                if( $dropdown_key == $value) {
                  $selected = true;
                }

                echo '<option '. ($selected ? 'selected' : false) .' value="'. $dropdown_key .'">'. $dropdown_value .'</option>';
              }

              echo '</select>';
              break;

            case 'checkbox':

              echo '<input name="'. $key .'" type="checkbox" value="true" '. ($value ? 'checked' : false) .'>';
              break;

            case 'image_upload':
              
              if($value) {
                $meta_image_image_src = $value;
              } else {
                $meta_image_image_src = false;
              }

              echo '<div id="meta-image-image'.$key.'" style="text-align:center;background-image: linear-gradient(45deg, #bfc1c2 25%, transparent 25%),linear-gradient(-45deg, #bfc1c2 25%, transparent 25%),linear-gradient(45deg, transparent 75%, #bfc1c2 75%),linear-gradient(-45deg, transparent 75%, #bfc1c2 75%);background-size: 20px 20px;background-position: 0 0, 0 10px, 10px -10px, -10px 0px;">';

              if($meta_image_image_src){
                echo '<img style="margin:auto;max-width:100%;max-height:150px;" id="meta-image-image'. $key .'" src="'.$meta_image_image_src.'">';
              }

              ?>
              </div>

              <p>
                <input type="text" name="<?php echo $key ?>" id="meta-image<?php echo $key ?>" value="<?php echo $value ?>" style="width:100%;"/>
                <input type="button" id="meta-image-button<?php echo $key ?>" class="button" value="Choose or Upload an Image" />
              </p>
              <?php

              break;

            case 'radio':

              // not yet 
              break;

            case 'color_picker':

              ?>
                <p>
                  <input name="<?php echo $key ?>" type="text" value="<?php echo $value; ?>" class="meta-color" />
                </p>
              <?php

              break;
          }

          echo '</label></div>';
          break;
      }
    }
  }

  public function set_fields( $fields ) {
    $this->Fields = $fields;
  }

}; // End ATMC Custom Metabox Class

?>