/**
  * @param array $data
  * @return bool
  */
 public function updateMediaFields($data = null)
 {
     $id = isset($data['id']) ? $data['id'] : $this->id;
     if (isset($data['id'])) {
         unset($data['id']);
     }
     $errors = false;
     $post = $_post = get_post($id, ARRAY_A);
     if (isset($data['post_content'])) {
         $post['post_content'] = $data['post_content'];
     }
     if (isset($data['post_title'])) {
         $post['post_title'] = $data['post_title'];
     }
     if (isset($data['post_excerpt'])) {
         $post['post_excerpt'] = $data['post_excerpt'];
     }
     if (isset($data['menu_order'])) {
         $post['menu_order'] = $data['menu_order'];
     }
     $post = apply_filters('attachment_fields_to_save', $post, $data);
     if (isset($data['image_alt'])) {
         $image_alt = get_post_meta($id, '_wp_attachment_image_alt', true);
         if ($image_alt != stripslashes($data['image_alt'])) {
             $image_alt = wp_strip_all_tags(stripslashes($data['image_alt']), true);
             // update_meta expects slashed
             update_post_meta($id, '_wp_attachment_image_alt', addslashes($image_alt));
         }
     }
     if (isset($data['url'])) {
         $image_url = get_post_meta($id, '_gumm_attachment_image_link', true);
         if (!is_array($image_url) || is_array($image_url && !isset($image_url['url']))) {
             $image_url = array('url' => '', 'button' => '');
         }
         if (isset($data['link_button'])) {
             $image_url['button'] = stripslashes($data['link_button']);
         }
         if ($image_url['url'] != stripslashes($data['url'])) {
             $image_url['url'] = addslashes(wp_strip_all_tags(stripslashes($data['url']), true));
             $image_url['button'] = addslashes(stripslashes($image_url['button']));
             // update_meta expects slashed
             update_post_meta($id, '_gumm_attachment_image_link', $image_url);
         }
     }
     if (isset($post['errors'])) {
         $errors[$attachment_id] = $post['errors'];
         unset($post['errors']);
     }
     if ($post != $_post) {
         wp_update_post($post);
     }
     foreach (get_attachment_taxonomies($post) as $t) {
         if (isset($data[$t])) {
             wp_set_object_terms($id, array_map('trim', preg_split('/,+/', $data[$t])), $t, false);
         }
     }
     return $errors ? false : true;
 }

 /**
  * @ticket 37368
  */
 public function test_should_respect_output_objects()
 {
     register_taxonomy('wptests_tax2', 'attachment:image');
     $a = self::factory()->attachment->create_object('image.jpg', 0, array('post_mime_type' => 'image/jpeg', 'post_type' => 'attachment'));
     $attachment = get_post($a);
     $found = get_attachment_taxonomies($attachment, 'objects');
     $this->assertSame(array('wptests_tax2'), array_keys($found));
     $this->assertInternalType('object', $found['wptests_tax2']);
     $this->assertSame('wptests_tax2', $found['wptests_tax2']->name);
 }

 public static function remove_media_fields($form_fields, $attachment)
 {
     if (!isset($_GET['post_id'])) {
         return $form_fields;
     }
     $product_id = $_GET['post_id'];
     if (isset($_GET['tab']) && $_GET['tab'] == 'gallery' && get_post_type($product_id) == 'product' && wp_attachment_is_image($attachment->ID)) {
         foreach (get_attachment_taxonomies($attachment) as $taxonomy) {
             if (isset($form_fields[$taxonomy])) {
                 unset($form_fields[$taxonomy]);
             }
         }
     }
     return $form_fields;
 }

/**
 * Return all of the taxonomy names that are of $object_type.
 *
 * It appears that this function can be used to find all of the names inside of
 * $wp_taxonomies global variable.
 *
 * <code><?php $taxonomies = get_object_taxonomies('post'); ?></code> Should
 * result in <code>Array('category', 'post_tag')</code>
 *
 * @package WordPress
 * @subpackage Taxonomy
 * @since 2.3.0
 *
 * @uses $wp_taxonomies
 *
 * @param array|string|object $object Name of the type of taxonomy object, or an object (row from posts)
 * @return array The names of all taxonomy of $object_type.
 */
function get_object_taxonomies($object)
{
    global $wp_taxonomies;
    if (is_object($object)) {
        if ($object->post_type == 'attachment') {
            return get_attachment_taxonomies($object);
        }
        $object = $object->post_type;
    }
    $object = (array) $object;
    $taxonomies = array();
    foreach ((array) $wp_taxonomies as $taxonomy) {
        if (array_intersect($object, (array) $taxonomy->object_type)) {
            $taxonomies[] = $taxonomy->name;
        }
    }
    return $taxonomies;
}

 static function attachment_fields_to_save($post, $attachment_data)
 {
     if (defined('DOING_AJAX') && DOING_AJAX && isset($_REQUEST['action']) && $_REQUEST['action'] == 'save-attachment-compat' && isset($_REQUEST['id']) && isset($_REQUEST['media_category_nonce']) && wp_verify_nonce($_REQUEST['media_category_nonce'], 'save_attachment_media_categories')) {
         $attachment_id = intval($_REQUEST['id']);
         if (empty($attachment_id)) {
             wp_send_json_error();
         }
         foreach (get_attachment_taxonomies($post) as $taxonomy) {
             if (isset($_REQUEST['tax_input'][$taxonomy])) {
                 $terms = array_filter(array_map('intval', $_REQUEST['tax_input'][$taxonomy]));
                 wp_set_object_terms($attachment_id, $terms, $taxonomy, false);
             } else {
                 wp_set_object_terms($attachment_id, array(), $taxonomy, false);
             }
         }
     }
     return $post;
 }

/**
 * Return all of the taxonomy names that are of $object_type.
 *
 * It appears that this function can be used to find all of the names inside of
 * $wp_taxonomies global variable.
 *
 * <code><?php $taxonomies = get_object_taxonomies('post'); ?></code> Should
 * result in <code>Array('category', 'post_tag')</code>
 *
 * @package WordPress
 * @subpackage Taxonomy
 * @since 2.3.0
 *
 * @uses $wp_taxonomies
 *
 * @param array|string|object $object Name of the type of taxonomy object, or an object (row from posts)
 * @param string $output The type of output to return, either taxonomy 'names' or 'objects'. 'names' is the default.
 * @return array The names of all taxonomy of $object_type.
 */
function get_object_taxonomies($object, $output = 'names')
{
    global $wp_taxonomies;
    if (is_object($object)) {
        if ($object->post_type == 'attachment') {
            return get_attachment_taxonomies($object);
        }
        $object = $object->post_type;
    }
    $object = (array) $object;
    $taxonomies = array();
    foreach ((array) $wp_taxonomies as $tax_name => $tax_obj) {
        if (array_intersect($object, (array) $tax_obj->object_type)) {
            if ('names' == $output) {
                $taxonomies[] = $tax_name;
            } else {
                $taxonomies[$tax_name] = $tax_obj;
            }
        }
    }
    return $taxonomies;
}

/**
 * Ajax handler for saving backwards compatible attachment attributes.
 *
 * @since 3.5.0
 */
function wp_ajax_save_attachment_compat()
{
    if (!isset($_REQUEST['id'])) {
        wp_send_json_error();
    }
    if (!($id = absint($_REQUEST['id']))) {
        wp_send_json_error();
    }
    if (empty($_REQUEST['attachments']) || empty($_REQUEST['attachments'][$id])) {
        wp_send_json_error();
    }
    $attachment_data = $_REQUEST['attachments'][$id];
    check_ajax_referer('update-post_' . $id, 'nonce');
    if (!current_user_can('edit_post', $id)) {
        wp_send_json_error();
    }
    $post = get_post($id, ARRAY_A);
    if ('attachment' != $post['post_type']) {
        wp_send_json_error();
    }
    /** This filter is documented in wp-admin/includes/media.php */
    $post = apply_filters('attachment_fields_to_save', $post, $attachment_data);
    if (isset($post['errors'])) {
        $errors = $post['errors'];
        // @todo return me and display me!
        unset($post['errors']);
    }
    wp_update_post($post);
    foreach (get_attachment_taxonomies($post) as $taxonomy) {
        if (isset($attachment_data[$taxonomy])) {
            wp_set_object_terms($id, array_map('trim', preg_split('/,+/', $attachment_data[$taxonomy])), $taxonomy, false);
        }
    }
    if (!($attachment = wp_prepare_attachment_for_js($id))) {
        wp_send_json_error();
    }
    wp_send_json_success($attachment);
}

function get_compat_media_markup($attachment_id, $args = null)
{
    $post = get_post($attachment_id);
    $default_args = array('errors' => null, 'in_modal' => false);
    $user_can_edit = current_user_can('edit_post', $attachment_id);
    $args = wp_parse_args($args, $default_args);
    /** This filter is documented in wp-admin/includes/media.php */
    $args = apply_filters('get_media_item_args', $args);
    $form_fields = array();
    if ($args['in_modal']) {
        foreach (get_attachment_taxonomies($post) as $taxonomy) {
            $t = (array) get_taxonomy($taxonomy);
            if (!$t['public'] || !$t['show_ui']) {
                continue;
            }
            if (empty($t['label'])) {
                $t['label'] = $taxonomy;
            }
            if (empty($t['args'])) {
                $t['args'] = array();
            }
            $terms = get_object_term_cache($post->ID, $taxonomy);
            if (false === $terms) {
                $terms = wp_get_object_terms($post->ID, $taxonomy, $t['args']);
            }
            $values = array();
            foreach ($terms as $term) {
                $values[] = $term->slug;
            }
            $t['value'] = join(', ', $values);
            $t['taxonomy'] = true;
            $form_fields[$taxonomy] = $t;
        }
    }
    // Merge default fields with their errors, so any key passed with the error (e.g. 'error', 'helps', 'value') will replace the default
    // The recursive merge is easily traversed with array casting: foreach( (array) $things as $thing )
    $form_fields = array_merge_recursive($form_fields, (array) $args['errors']);
    /** This filter is documented in wp-admin/includes/media.php */
    $form_fields = apply_filters('attachment_fields_to_edit', $form_fields, $post);
    unset($form_fields['image-size'], $form_fields['align'], $form_fields['image_alt'], $form_fields['post_title'], $form_fields['post_excerpt'], $form_fields['post_content'], $form_fields['url'], $form_fields['menu_order'], $form_fields['image_url']);
    /** This filter is documented in wp-admin/includes/media.php */
    $media_meta = apply_filters('media_meta', '', $post);
    $defaults = array('input' => 'text', 'required' => false, 'value' => '', 'extra_rows' => array(), 'show_in_edit' => true, 'show_in_modal' => true);
    $hidden_fields = array();
    $item = '';
    foreach ($form_fields as $id => $field) {
        if ($id[0] == '_') {
            continue;
        }
        $name = "attachments[{$attachment_id}][{$id}]";
        $id_attr = "attachments-{$attachment_id}-{$id}";
        if (!empty($field['tr'])) {
            $item .= $field['tr'];
            continue;
        }
        $field = array_merge($defaults, $field);
        if (!$field['show_in_edit'] && !$args['in_modal'] || !$field['show_in_modal'] && $args['in_modal']) {
            continue;
        }
        if ($field['input'] == 'hidden') {
            $hidden_fields[$name] = $field['value'];
            continue;
        }
        $readonly = !$user_can_edit && !empty($field['taxonomy']) ? " readonly='readonly' " : '';
        $required = $field['required'] ? '<span class="alignright"><abbr title="required" class="required">*</abbr></span>' : '';
        $aria_required = $field['required'] ? " aria-required='true' " : '';
        $class = 'compat-field-' . $id;
        $class .= $field['required'] ? ' form-required' : '';
        $item .= "\t\t<tr class='{$class}'>";
        $item .= "\t\t\t<th scope='row' class='label'><label for='{$id_attr}'><span class='alignleft'>{$field['label']}</span>{$required}<br class='clear' /></label>";
        $item .= "</th>\n\t\t\t<td class='field'>";
        if (!empty($field[$field['input']])) {
            $item .= $field[$field['input']];
        } elseif ($field['input'] == 'textarea') {
            if ('post_content' == $id && user_can_richedit()) {
                // sanitize_post() skips the post_content when user_can_richedit.
                $field['value'] = htmlspecialchars($field['value'], ENT_QUOTES);
            }
            $item .= "<textarea id='{$id_attr}' name='{$name}' {$aria_required}>" . $field['value'] . '</textarea>';
        } else {
            $item .= "<input type='text' class='text' id='{$id_attr}' name='{$name}' value='" . esc_attr($field['value']) . "' {$readonly} {$aria_required} />";
        }
        if (!empty($field['helps'])) {
            $item .= "<p class='help'>" . join("</p>\n<p class='help'>", array_unique((array) $field['helps'])) . '</p>';
        }
        $item .= "</td>\n\t\t</tr>\n";
        $extra_rows = array();
        if (!empty($field['errors'])) {
            foreach (array_unique((array) $field['errors']) as $error) {
                $extra_rows['error'][] = $error;
            }
        }
        if (!empty($field['extra_rows'])) {
            foreach ($field['extra_rows'] as $class => $rows) {
                foreach ((array) $rows as $html) {
                    $extra_rows[$class][] = $html;
                }
            }
        }
        foreach ($extra_rows as $class => $rows) {
//.........这里部分代码省略.........

/**
 * {@internal Missing Short Description}}
 *
 * @since unknown
 *
 * @param unknown_type $post
 * @param unknown_type $errors
 * @return unknown
 */
function get_attachment_fields_to_edit($post, $errors = null)
{
    if (is_int($post)) {
        $post =& get_post($post);
    }
    if (is_array($post)) {
        $post = (object) $post;
    }
    $image_url = wp_get_attachment_url($post->ID);
    $edit_post = sanitize_post($post, 'edit');
    $form_fields = array('post_title' => array('label' => __('Title'), 'value' => $edit_post->post_title), 'post_excerpt' => array('label' => __('Caption'), 'value' => $edit_post->post_excerpt), 'post_content' => array('label' => __('Description'), 'value' => $edit_post->post_content, 'input' => 'textarea'), 'url' => array('label' => __('Link URL'), 'input' => 'html', 'html' => image_link_input_fields($post, get_option('image_default_link_type')), 'helps' => __('Enter a link URL or click above for presets.')), 'menu_order' => array('label' => __('Order'), 'value' => $edit_post->menu_order), 'image_url' => array('label' => __('File URL'), 'input' => 'html', 'html' => "<input type='text' class='urlfield' readonly='readonly' name='attachments[{$post->ID}][url]' value='" . esc_attr($image_url) . "' /><br />", 'value' => isset($edit_post->post_url) ? $edit_post->post_url : '', 'helps' => __('Location of the uploaded file.')));
    foreach (get_attachment_taxonomies($post) as $taxonomy) {
        $t = (array) get_taxonomy($taxonomy);
        if (empty($t['label'])) {
            $t['label'] = $taxonomy;
        }
        if (empty($t['args'])) {
            $t['args'] = array();
        }
        $terms = get_object_term_cache($post->ID, $taxonomy);
        if (empty($terms)) {
            $terms = wp_get_object_terms($post->ID, $taxonomy, $t['args']);
        }
        $values = array();
        foreach ($terms as $term) {
            $values[] = $term->name;
        }
        $t['value'] = join(', ', $values);
        $form_fields[$taxonomy] = $t;
    }
    // Merge default fields with their errors, so any key passed with the error (e.g. 'error', 'helps', 'value') will replace the default
    // The recursive merge is easily traversed with array casting: foreach( (array) $things as $thing )
    $form_fields = array_merge_recursive($form_fields, (array) $errors);
    $form_fields = apply_filters('attachment_fields_to_edit', $form_fields, $post);
    return $form_fields;
}

function get_attachment_fields_to_edit($post, $errors = null)
{
    if (is_int($post)) {
        $post =& get_post($post);
    }
    if (is_array($post)) {
        $post = (object) $post;
    }
    $edit_post = sanitize_post($post, 'edit');
    $file = wp_get_attachment_url($post->ID);
    $link = get_attachment_link($post->ID);
    $form_fields = array('post_title' => array('label' => __('Title'), 'value' => $edit_post->post_title), 'post_excerpt' => array('label' => __('Caption'), 'value' => $edit_post->post_excerpt), 'post_content' => array('label' => __('Description'), 'value' => $edit_post->post_content, 'input' => 'textarea'), 'url' => array('label' => __('Link URL'), 'input' => 'html', 'html' => "\n\t\t\t\t<input type='text' name='attachments[{$post->ID}][url]' value='" . attribute_escape($file) . "' /><br />\n\t\t\t\t<button type='button' class='button url-{$post->ID}' value=''>" . __('None') . "</button>\n\t\t\t\t<button type='button' class='button url-{$post->ID}' value='" . attribute_escape($file) . "'>" . __('File URL') . "</button>\n\t\t\t\t<button type='button' class='button url-{$post->ID}' value='" . attribute_escape($link) . "'>" . __('Post URL') . "</button>\n\t\t\t\t<script type='text/javascript'>\n\t\t\t\tjQuery('button.url-{$post->ID}').bind('click', function(){jQuery(this).siblings('input').val(this.value);});\n\t\t\t\t</script>\n", 'helps' => __('Enter a link URL or click above for presets.')));
    foreach (get_attachment_taxonomies($post) as $taxonomy) {
        $t = (array) get_taxonomy($taxonomy);
        if (empty($t['label'])) {
            $t['label'] = $taxonomy;
        }
        if (empty($t['args'])) {
            $t['args'] = array();
        }
        $terms = get_object_term_cache($post->ID, $taxonomy);
        if (empty($terms)) {
            $terms = wp_get_object_terms($post->ID, $taxonomy, $t['args']);
        }
        $values = array();
        foreach ($terms as $term) {
            $values[] = $term->name;
        }
        $t['value'] = join(', ', $values);
        $form_fields[$taxonomy] = $t;
    }
    // Merge default fields with their errors, so any key passed with the error (e.g. 'error', 'helps', 'value') will replace the default
    // The recursive merge is easily traversed with array casting: foreach( (array) $things as $thing )
    $form_fields = array_merge_recursive($form_fields, (array) $errors);
    $form_fields = apply_filters('attachment_fields_to_edit', $form_fields, $post);
    return $form_fields;
}

 /** Add category checkboxes to attachment details on insert media popup */
 function wpmediacategory_attachment_fields_to_edit($form_fields, $post)
 {
     foreach (get_attachment_taxonomies($post->ID) as $taxonomy) {
         $terms = get_object_term_cache($post->ID, $taxonomy);
         $t = (array) get_taxonomy($taxonomy);
         if (!$t['public'] || !$t['show_ui']) {
             continue;
         }
         if (empty($t['label'])) {
             $t['label'] = $taxonomy;
         }
         if (empty($t['args'])) {
             $t['args'] = array();
         }
         if (false === $terms) {
             $terms = wp_get_object_terms($post->ID, $taxonomy, $t['args']);
         }
         $values = array();
         foreach ($terms as $term) {
             $values[] = $term->slug;
         }
         $t['value'] = join(', ', $values);
         $t['show_in_edit'] = false;
         if ($t['hierarchical']) {
             ob_start();
             wp_terms_checklist($post->ID, array('taxonomy' => $taxonomy, 'checked_ontop' => false, 'walker' => new wpmediacategory_walker_media_taxonomy_checklist()));
             if (ob_get_contents() != false) {
                 $html = '<ul class="term-list">' . ob_get_contents() . '</ul>';
             } else {
                 $html = '<ul class="term-list"><li>No ' . $t['label'] . '</li></ul>';
             }
             ob_end_clean();
             $t['input'] = 'html';
             $t['html'] = $html;
         }
         $form_fields[$taxonomy] = $t;
     }
     return $form_fields;
 }