/wp-admin/includes/media.php

Large files files are truncated, but you can click here to view the full file

<?php
/**
 * WordPress Administration Media API.
 *
 * @package WordPress
 * @subpackage Administration
 */

/**
 * Defines the default media upload tabs
 *
 * @since 2.5.0
 *
 * @return string[] Default tabs.
 */
function media_upload_tabs() {
	$_default_tabs = array(
		'type'     => __( 'From Computer' ), // Handler action suffix => tab text.
		'type_url' => __( 'From URL' ),
		'gallery'  => __( 'Gallery' ),
		'library'  => __( 'Media Library' ),
	);

	/**
	 * Filters the available tabs in the legacy (pre-3.5.0) media popup.
	 *
	 * @since 2.5.0
	 *
	 * @param string[] $_default_tabs An array of media tabs.
	 */
	return apply_filters( 'media_upload_tabs', $_default_tabs );
}

/**
 * Adds the gallery tab back to the tabs array if post has image attachments
 *
 * @since 2.5.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param array $tabs
 * @return array $tabs with gallery if post has image attachment
 */
function update_gallery_tab( $tabs ) {
	global $wpdb;

	if ( ! isset( $_REQUEST['post_id'] ) ) {
		unset( $tabs['gallery'] );
		return $tabs;
	}

	$post_id = intval( $_REQUEST['post_id'] );

	if ( $post_id ) {
		$attachments = intval( $wpdb->get_var( $wpdb->prepare( "SELECT count(*) FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status != 'trash' AND post_parent = %d", $post_id ) ) );
	}

	if ( empty( $attachments ) ) {
		unset( $tabs['gallery'] );
		return $tabs;
	}

	/* translators: %s: Number of attachments. */
	$tabs['gallery'] = sprintf( __( 'Gallery (%s)' ), "<span id='attachments-count'>$attachments</span>" );

	return $tabs;
}

/**
 * Outputs the legacy media upload tabs UI.
 *
 * @since 2.5.0
 *
 * @global string $redir_tab
 */
function the_media_upload_tabs() {
	global $redir_tab;
	$tabs    = media_upload_tabs();
	$default = 'type';

	if ( ! empty( $tabs ) ) {
		echo "<ul id='sidemenu'>\n";

		if ( isset( $redir_tab ) && array_key_exists( $redir_tab, $tabs ) ) {
			$current = $redir_tab;
		} elseif ( isset( $_GET['tab'] ) && array_key_exists( $_GET['tab'], $tabs ) ) {
			$current = $_GET['tab'];
		} else {
			/** This filter is documented in wp-admin/media-upload.php */
			$current = apply_filters( 'media_upload_default_tab', $default );
		}

		foreach ( $tabs as $callback => $text ) {
			$class = '';

			if ( $current == $callback ) {
				$class = " class='current'";
			}

			$href = add_query_arg(
				array(
					'tab'            => $callback,
					's'              => false,
					'paged'          => false,
					'post_mime_type' => false,
					'm'              => false,
				)
			);
			$link = "<a href='" . esc_url( $href ) . "'$class>$text</a>";
			echo "\t<li id='" . esc_attr( "tab-$callback" ) . "'>$link</li>\n";
		}

		echo "</ul>\n";
	}
}

/**
 * Retrieves the image HTML to send to the editor.
 *
 * @since 2.5.0
 *
 * @param int          $id      Image attachment id.
 * @param string       $caption Image caption.
 * @param string       $title   Image title attribute.
 * @param string       $align   Image CSS alignment property.
 * @param string       $url     Optional. Image src URL. Default empty.
 * @param bool|string  $rel     Optional. Value for rel attribute or whether to add a default value. Default false.
 * @param string|array $size    Optional. Image size. Accepts any valid image size, or an array of width
 *                              and height values in pixels (in that order). Default 'medium'.
 * @param string       $alt     Optional. Image alt attribute. Default empty.
 * @return string The HTML output to insert into the editor.
 */
function get_image_send_to_editor( $id, $caption, $title, $align, $url = '', $rel = false, $size = 'medium', $alt = '' ) {

	$html = get_image_tag( $id, $alt, '', $align, $size );

	if ( $rel ) {
		if ( is_string( $rel ) ) {
			$rel = ' rel="' . esc_attr( $rel ) . '"';
		} else {
			$rel = ' rel="attachment wp-att-' . intval( $id ) . '"';
		}
	} else {
		$rel = '';
	}

	if ( $url ) {
		$html = '<a href="' . esc_attr( $url ) . '"' . $rel . '>' . $html . '</a>';
	}

	/**
	 * Filters the image HTML markup to send to the editor when inserting an image.
	 *
	 * @since 2.5.0
	 *
	 * @param string       $html    The image HTML markup to send.
	 * @param int          $id      The attachment id.
	 * @param string       $caption The image caption.
	 * @param string       $title   The image title.
	 * @param string       $align   The image alignment.
	 * @param string       $url     The image source URL.
	 * @param string|array $size    Size of image. Image size or array of width and height values
	 *                              (in that order). Default 'medium'.
	 * @param string       $alt     The image alternative, or alt, text.
	 */
	$html = apply_filters( 'image_send_to_editor', $html, $id, $caption, $title, $align, $url, $size, $alt );

	return $html;
}

/**
 * Adds image shortcode with caption to editor
 *
 * @since 2.6.0
 *
 * @param string  $html    The image HTML markup to send.
 * @param integer $id      Image attachment ID.
 * @param string  $caption Image caption.
 * @param string  $title   Image title attribute (not used).
 * @param string  $align   Image CSS alignment property.
 * @param string  $url     Image source URL (not used).
 * @param string  $size    Image size (`thumbnail`, `medium`, `large`, `full`, or added with `add_image_size()`) (not used).
 * @param string  $alt     Image `alt` attribute (not used).
 * @return string The image HTML markup with caption shortcode.
 */
function image_add_caption( $html, $id, $caption, $title, $align, $url, $size, $alt = '' ) {

	/**
	 * Filters the caption text.
	 *
	 * Note: If the caption text is empty, the caption shortcode will not be appended
	 * to the image HTML when inserted into the editor.
	 *
	 * Passing an empty value also prevents the {@see 'image_add_caption_shortcode'}
	 * Filters from being evaluated at the end of image_add_caption().
	 *
	 * @since 4.1.0
	 *
	 * @param string $caption The original caption text.
	 * @param int    $id      The attachment ID.
	 */
	$caption = apply_filters( 'image_add_caption_text', $caption, $id );

	/**
	 * Filters whether to disable captions.
	 *
	 * Prevents image captions from being appended to image HTML when inserted into the editor.
	 *
	 * @since 2.6.0
	 *
	 * @param bool $bool Whether to disable appending captions. Returning true to the filter
	 *                   will disable captions. Default empty string.
	 */
	if ( empty( $caption ) || apply_filters( 'disable_captions', '' ) ) {
		return $html;
	}

	$id = ( 0 < (int) $id ) ? 'attachment_' . $id : '';

	if ( ! preg_match( '/width=["\']([0-9]+)/', $html, $matches ) ) {
		return $html;
	}

	$width = $matches[1];

	$caption = str_replace( array( "\r\n", "\r" ), "\n", $caption );
	$caption = preg_replace_callback( '/<[a-zA-Z0-9]+(?: [^<>]+>)*/', '_cleanup_image_add_caption', $caption );

	// Convert any remaining line breaks to <br />.
	$caption = preg_replace( '/[ \n\t]*\n[ \t]*/', '<br />', $caption );

	$html = preg_replace( '/(class=["\'][^\'"]*)align(none|left|right|center)\s?/', '$1', $html );
	if ( empty( $align ) ) {
		$align = 'none';
	}

	$shcode = '[caption id="' . $id . '" align="align' . $align . '" width="' . $width . '"]' . $html . ' ' . $caption . '[/caption]';

	/**
	 * Filters the image HTML markup including the caption shortcode.
	 *
	 * @since 2.6.0
	 *
	 * @param string $shcode The image HTML markup with caption shortcode.
	 * @param string $html   The image HTML markup.
	 */
	return apply_filters( 'image_add_caption_shortcode', $shcode, $html );
}

/**
 * Private preg_replace callback used in image_add_caption()
 *
 * @access private
 * @since 3.4.0
 */
function _cleanup_image_add_caption( $matches ) {
	// Remove any line breaks from inside the tags.
	return preg_replace( '/[\r\n\t]+/', ' ', $matches[0] );
}

/**
 * Adds image html to editor
 *
 * @since 2.5.0
 *
 * @param string $html
 */
function media_send_to_editor( $html ) {
	?>
	<script type="text/javascript">
	var win = window.dialogArguments || opener || parent || top;
	win.send_to_editor( <?php echo wp_json_encode( $html ); ?> );
	</script>
	<?php
	exit;
}

/**
 * Save a file submitted from a POST request and create an attachment post for it.
 *
 * @since 2.5.0
 *
 * @param string $file_id   Index of the `$_FILES` array that the file was sent. Required.
 * @param int    $post_id   The post ID of a post to attach the media item to. Required, but can
 *                          be set to 0, creating a media item that has no relationship to a post.
 * @param array  $post_data Overwrite some of the attachment. Optional.
 * @param array  $overrides Override the wp_handle_upload() behavior. Optional.
 * @return int|WP_Error ID of the attachment or a WP_Error object on failure.
 */
function media_handle_upload( $file_id, $post_id, $post_data = array(), $overrides = array( 'test_form' => false ) ) {
	$time = current_time( 'mysql' );
	$post = get_post( $post_id );

	if ( $post ) {
		// The post date doesn't usually matter for pages, so don't backdate this upload.
		if ( 'page' !== $post->post_type && substr( $post->post_date, 0, 4 ) > 0 ) {
			$time = $post->post_date;
		}
	}

	$file = wp_handle_upload( $_FILES[ $file_id ], $overrides, $time );

	if ( isset( $file['error'] ) ) {
		return new WP_Error( 'upload_error', $file['error'] );
	}

	$name = $_FILES[ $file_id ]['name'];
	$ext  = pathinfo( $name, PATHINFO_EXTENSION );
	$name = wp_basename( $name, ".$ext" );

	$url     = $file['url'];
	$type    = $file['type'];
	$file    = $file['file'];
	$title   = sanitize_text_field( $name );
	$content = '';
	$excerpt = '';

	if ( preg_match( '#^audio#', $type ) ) {
		$meta = wp_read_audio_metadata( $file );

		if ( ! empty( $meta['title'] ) ) {
			$title = $meta['title'];
		}

		if ( ! empty( $title ) ) {

			if ( ! empty( $meta['album'] ) && ! empty( $meta['artist'] ) ) {
				/* translators: 1: Audio track title, 2: Album title, 3: Artist name. */
				$content .= sprintf( __( '"%1$s" from %2$s by %3$s.' ), $title, $meta['album'], $meta['artist'] );
			} elseif ( ! empty( $meta['album'] ) ) {
				/* translators: 1: Audio track title, 2: Album title. */
				$content .= sprintf( __( '"%1$s" from %2$s.' ), $title, $meta['album'] );
			} elseif ( ! empty( $meta['artist'] ) ) {
				/* translators: 1: Audio track title, 2: Artist name. */
				$content .= sprintf( __( '"%1$s" by %2$s.' ), $title, $meta['artist'] );
			} else {
				/* translators: %s: Audio track title. */
				$content .= sprintf( __( '"%s".' ), $title );
			}
		} elseif ( ! empty( $meta['album'] ) ) {

			if ( ! empty( $meta['artist'] ) ) {
				/* translators: 1: Audio album title, 2: Artist name. */
				$content .= sprintf( __( '%1$s by %2$s.' ), $meta['album'], $meta['artist'] );
			} else {
				$content .= $meta['album'] . '.';
			}
		} elseif ( ! empty( $meta['artist'] ) ) {

			$content .= $meta['artist'] . '.';

		}

		if ( ! empty( $meta['year'] ) ) {
			/* translators: Audio file track information. %d: Year of audio track release. */
			$content .= ' ' . sprintf( __( 'Released: %d.' ), $meta['year'] );
		}

		if ( ! empty( $meta['track_number'] ) ) {
			$track_number = explode( '/', $meta['track_number'] );

			if ( isset( $track_number[1] ) ) {
				/* translators: Audio file track information. 1: Audio track number, 2: Total audio tracks. */
				$content .= ' ' . sprintf( __( 'Track %1$s of %2$s.' ), number_format_i18n( $track_number[0] ), number_format_i18n( $track_number[1] ) );
			} else {
				/* translators: Audio file track information. %s: Audio track number. */
				$content .= ' ' . sprintf( __( 'Track %s.' ), number_format_i18n( $track_number[0] ) );
			}
		}

		if ( ! empty( $meta['genre'] ) ) {
			/* translators: Audio file genre information. %s: Audio genre name. */
			$content .= ' ' . sprintf( __( 'Genre: %s.' ), $meta['genre'] );
		}

		// Use image exif/iptc data for title and caption defaults if possible.
	} elseif ( 0 === strpos( $type, 'image/' ) ) {
		$image_meta = wp_read_image_metadata( $file );

		if ( $image_meta ) {
			if ( trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {
				$title = $image_meta['title'];
			}

			if ( trim( $image_meta['caption'] ) ) {
				$excerpt = $image_meta['caption'];
			}
		}
	}

	// Construct the attachment array.
	$attachment = array_merge(
		array(
			'post_mime_type' => $type,
			'guid'           => $url,
			'post_parent'    => $post_id,
			'post_title'     => $title,
			'post_content'   => $content,
			'post_excerpt'   => $excerpt,
		),
		$post_data
	);

	// This should never be set as it would then overwrite an existing attachment.
	unset( $attachment['ID'] );

	// Save the data.
	$attachment_id = wp_insert_attachment( $attachment, $file, $post_id, true );

	if ( ! is_wp_error( $attachment_id ) ) {
		// Set a custom header with the attachment_id.
		// Used by the browser/client to resume creating image sub-sizes after a PHP fatal error.
		if ( ! headers_sent() ) {
			header( 'X-WP-Upload-Attachment-ID: ' . $attachment_id );
		}

		// The image sub-sizes are created during wp_generate_attachment_metadata().
		// This is generally slow and may cause timeouts or out of memory errors.
		wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
	}

	return $attachment_id;
}

/**
 * Handles a side-loaded file in the same way as an uploaded file is handled by media_handle_upload().
 *
 * @since 2.6.0
 * @since 5.3.0 The `$post_id` parameter was made optional.
 *
 * @param array  $file_array Array similar to a `$_FILES` upload array.
 * @param int    $post_id    Optional. The post ID the media is associated with.
 * @param string $desc       Optional. Description of the side-loaded file. Default null.
 * @param array  $post_data  Optional. Post data to override. Default empty array.
 * @return int|WP_Error The ID of the attachment or a WP_Error on failure.
 */
function media_handle_sideload( $file_array, $post_id = 0, $desc = null, $post_data = array() ) {
	$overrides = array( 'test_form' => false );

	$time = current_time( 'mysql' );
	$post = get_post( $post_id );

	if ( $post ) {
		if ( substr( $post->post_date, 0, 4 ) > 0 ) {
			$time = $post->post_date;
		}
	}

	$file = wp_handle_sideload( $file_array, $overrides, $time );

	if ( isset( $file['error'] ) ) {
		return new WP_Error( 'upload_error', $file['error'] );
	}

	$url     = $file['url'];
	$type    = $file['type'];
	$file    = $file['file'];
	$title   = preg_replace( '/\.[^.]+$/', '', wp_basename( $file ) );
	$content = '';

	// Use image exif/iptc data for title and caption defaults if possible.
	$image_meta = wp_read_image_metadata( $file );

	if ( $image_meta ) {
		if ( trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {
			$title = $image_meta['title'];
		}

		if ( trim( $image_meta['caption'] ) ) {
			$content = $image_meta['caption'];
		}
	}

	if ( isset( $desc ) ) {
		$title = $desc;
	}

	// Construct the attachment array.
	$attachment = array_merge(
		array(
			'post_mime_type' => $type,
			'guid'           => $url,
			'post_parent'    => $post_id,
			'post_title'     => $title,
			'post_content'   => $content,
		),
		$post_data
	);

	// This should never be set as it would then overwrite an existing attachment.
	unset( $attachment['ID'] );

	// Save the attachment metadata.
	$attachment_id = wp_insert_attachment( $attachment, $file, $post_id, true );

	if ( ! is_wp_error( $attachment_id ) ) {
		wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
	}

	return $attachment_id;
}

/**
 * Outputs the iframe to display the media upload page.
 *
 * @since 2.5.0
 * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
 *              by adding it to the function signature.
 *
 * @global int $body_id
 *
 * @param callable $content_func Function that outputs the content.
 * @param mixed    ...$args      Optional additional parameters to pass to the callback function when it's called.
 */
function wp_iframe( $content_func, ...$args ) {
	_wp_admin_html_begin();
	?>
	<title><?php bloginfo( 'name' ); ?> &rsaquo; <?php _e( 'Uploads' ); ?> &#8212; <?php _e( 'WordPress' ); ?></title>
	<?php

	wp_enqueue_style( 'colors' );
	// Check callback name for 'media'.
	if (
		( is_array( $content_func ) && ! empty( $content_func[1] ) && 0 === strpos( (string) $content_func[1], 'media' ) ) ||
		( ! is_array( $content_func ) && 0 === strpos( $content_func, 'media' ) )
	) {
		wp_enqueue_style( 'deprecated-media' );
	}

	?>
	<script type="text/javascript">
	addLoadEvent = function(func){if(typeof jQuery!="undefined")jQuery(document).ready(func);else if(typeof wpOnload!='function'){wpOnload=func;}else{var oldonload=wpOnload;wpOnload=function(){oldonload();func();}}};
	var ajaxurl = '<?php echo admin_url( 'admin-ajax.php', 'relative' ); ?>', pagenow = 'media-upload-popup', adminpage = 'media-upload-popup',
	isRtl = <?php echo (int) is_rtl(); ?>;
	</script>
	<?php
	/** This action is documented in wp-admin/admin-header.php */
	do_action( 'admin_enqueue_scripts', 'media-upload-popup' );

	/**
	 * Fires when admin styles enqueued for the legacy (pre-3.5.0) media upload popup are printed.
	 *
	 * @since 2.9.0
	 */
	do_action( 'admin_print_styles-media-upload-popup' );  // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

	/** This action is documented in wp-admin/admin-header.php */
	do_action( 'admin_print_styles' );

	/**
	 * Fires when admin scripts enqueued for the legacy (pre-3.5.0) media upload popup are printed.
	 *
	 * @since 2.9.0
	 */
	do_action( 'admin_print_scripts-media-upload-popup' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

	/** This action is documented in wp-admin/admin-header.php */
	do_action( 'admin_print_scripts' );

	/**
	 * Fires when scripts enqueued for the admin header for the legacy (pre-3.5.0)
	 * media upload popup are printed.
	 *
	 * @since 2.9.0
	 */
	do_action( 'admin_head-media-upload-popup' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

	/** This action is documented in wp-admin/admin-header.php */
	do_action( 'admin_head' );

	if ( is_string( $content_func ) ) {
		/**
		 * Fires in the admin header for each specific form tab in the legacy
		 * (pre-3.5.0) media upload popup.
		 *
		 * The dynamic portion of the hook, `$content_func`, refers to the form
		 * callback for the media upload type. Possible values include
		 * 'media_upload_type_form', 'media_upload_type_url_form', and
		 * 'media_upload_library_form'.
		 *
		 * @since 2.5.0
		 */
		do_action( "admin_head_{$content_func}" );
	}

	$body_id_attr = '';

	if ( isset( $GLOBALS['body_id'] ) ) {
		$body_id_attr = ' id="' . $GLOBALS['body_id'] . '"';
	}

	?>
	</head>
	<body<?php echo $body_id_attr; ?> class="wp-core-ui no-js">
	<script type="text/javascript">
	document.body.className = document.body.className.replace('no-js', 'js');
	</script>
	<?php

	call_user_func_array( $content_func, $args );

	/** This action is documented in wp-admin/admin-footer.php */
	do_action( 'admin_print_footer_scripts' );

	?>
	<script type="text/javascript">if(typeof wpOnload=='function')wpOnload();</script>
	</body>
	</html>
	<?php
}

/**
 * Adds the media button to the editor
 *
 * @since 2.5.0
 *
 * @global int $post_ID
 *
 * @staticvar int $instance
 *
 * @param string $editor_id
 */
function media_buttons( $editor_id = 'content' ) {
	static $instance = 0;
	$instance++;

	$post = get_post();

	if ( ! $post && ! empty( $GLOBALS['post_ID'] ) ) {
		$post = $GLOBALS['post_ID'];
	}

	wp_enqueue_media( array( 'post' => $post ) );

	$img = '<span class="wp-media-buttons-icon"></span> ';

	$id_attribute = 1 === $instance ? ' id="insert-media-button"' : '';

	printf(
		'<button type="button"%s class="button insert-media add_media" data-editor="%s">%s</button>',
		$id_attribute,
		esc_attr( $editor_id ),
		$img . __( 'Add Media' )
	);

	/**
	 * Filters the legacy (pre-3.5.0) media buttons.
	 *
	 * Use {@see 'media_buttons'} action instead.
	 *
	 * @since 2.5.0
	 * @deprecated 3.5.0 Use {@see 'media_buttons'} action instead.
	 *
	 * @param string $string Media buttons context. Default empty.
	 */
	$legacy_filter = apply_filters_deprecated( 'media_buttons_context', array( '' ), '3.5.0', 'media_buttons' );

	if ( $legacy_filter ) {
		// #WP22559. Close <a> if a plugin started by closing <a> to open their own <a> tag.
		if ( 0 === stripos( trim( $legacy_filter ), '</a>' ) ) {
			$legacy_filter .= '</a>';
		}
		echo $legacy_filter;
	}
}

/**
 * @global int $post_ID
 * @param string $type
 * @param int $post_id
 * @param string $tab
 * @return string
 */
function get_upload_iframe_src( $type = null, $post_id = null, $tab = null ) {
	global $post_ID;

	if ( empty( $post_id ) ) {
		$post_id = $post_ID;
	}

	$upload_iframe_src = add_query_arg( 'post_id', (int) $post_id, admin_url( 'media-upload.php' ) );

	if ( $type && 'media' != $type ) {
		$upload_iframe_src = add_query_arg( 'type', $type, $upload_iframe_src );
	}

	if ( ! empty( $tab ) ) {
		$upload_iframe_src = add_query_arg( 'tab', $tab, $upload_iframe_src );
	}

	/**
	 * Filters the upload iframe source URL for a specific media type.
	 *
	 * The dynamic portion of the hook name, `$type`, refers to the type
	 * of media uploaded.
	 *
	 * @since 3.0.0
	 *
	 * @param string $upload_iframe_src The upload iframe source URL by type.
	 */
	$upload_iframe_src = apply_filters( "{$type}_upload_iframe_src", $upload_iframe_src );

	return add_query_arg( 'TB_iframe', true, $upload_iframe_src );
}

/**
 * Handles form submissions for the legacy media uploader.
 *
 * @since 2.5.0
 *
 * @return mixed void|object WP_Error on failure
 */
function media_upload_form_handler() {
	check_admin_referer( 'media-form' );

	$errors = null;

	if ( isset( $_POST['send'] ) ) {
		$keys    = array_keys( $_POST['send'] );
		$send_id = (int) reset( $keys );
	}

	if ( ! empty( $_POST['attachments'] ) ) {
		foreach ( $_POST['attachments'] as $attachment_id => $attachment ) {
			$post  = get_post( $attachment_id, ARRAY_A );
			$_post = $post;

			if ( ! current_user_can( 'edit_post', $attachment_id ) ) {
				continue;
			}

			if ( isset( $attachment['post_content'] ) ) {
				$post['post_content'] = $attachment['post_content'];
			}

			if ( isset( $attachment['post_title'] ) ) {
				$post['post_title'] = $attachment['post_title'];
			}

			if ( isset( $attachment['post_excerpt'] ) ) {
				$post['post_excerpt'] = $attachment['post_excerpt'];
			}

			if ( isset( $attachment['menu_order'] ) ) {
				$post['menu_order'] = $attachment['menu_order'];
			}

			if ( isset( $send_id ) && $attachment_id == $send_id ) {
				if ( isset( $attachment['post_parent'] ) ) {
					$post['post_parent'] = $attachment['post_parent'];
				}
			}

			/**
			 * Filters the attachment fields to be saved.
			 *
			 * @since 2.5.0
			 *
			 * @see wp_get_attachment_metadata()
			 *
			 * @param array $post       An array of post data.
			 * @param array $attachment An array of attachment metadata.
			 */
			$post = apply_filters( 'attachment_fields_to_save', $post, $attachment );

			if ( isset( $attachment['image_alt'] ) ) {
				$image_alt = wp_unslash( $attachment['image_alt'] );

				if ( get_post_meta( $attachment_id, '_wp_attachment_image_alt', true ) !== $image_alt ) {
					$image_alt = wp_strip_all_tags( $image_alt, true );

					// update_post_meta() expects slashed.
					update_post_meta( $attachment_id, '_wp_attachment_image_alt', wp_slash( $image_alt ) );
				}
			}

			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( $attachment[ $t ] ) ) {
					wp_set_object_terms( $attachment_id, array_map( 'trim', preg_split( '/,+/', $attachment[ $t ] ) ), $t, false );
				}
			}
		}
	}

	if ( isset( $_POST['insert-gallery'] ) || isset( $_POST['update-gallery'] ) ) {
		?>
		<script type="text/javascript">
		var win = window.dialogArguments || opener || parent || top;
		win.tb_remove();
		</script>
		<?php

		exit;
	}

	if ( isset( $send_id ) ) {
		$attachment = wp_unslash( $_POST['attachments'][ $send_id ] );
		$html       = isset( $attachment['post_title'] ) ? $attachment['post_title'] : '';

		if ( ! empty( $attachment['url'] ) ) {
			$rel = '';

			if ( strpos( $attachment['url'], 'attachment_id' ) || get_attachment_link( $send_id ) == $attachment['url'] ) {
				$rel = " rel='attachment wp-att-" . esc_attr( $send_id ) . "'";
			}

			$html = "<a href='{$attachment['url']}'$rel>$html</a>";
		}

		/**
		 * Filters the HTML markup for a media item sent to the editor.
		 *
		 * @since 2.5.0
		 *
		 * @see wp_get_attachment_metadata()
		 *
		 * @param string $html       HTML markup for a media item sent to the editor.
		 * @param int    $send_id    The first key from the $_POST['send'] data.
		 * @param array  $attachment Array of attachment metadata.
		 */
		$html = apply_filters( 'media_send_to_editor', $html, $send_id, $attachment );

		return media_send_to_editor( $html );
	}

	return $errors;
}

/**
 * Handles the process of uploading media.
 *
 * @since 2.5.0
 *
 * @return null|string
 */
function wp_media_upload_handler() {
	$errors = array();
	$id     = 0;

	if ( isset( $_POST['html-upload'] ) && ! empty( $_FILES ) ) {
		check_admin_referer( 'media-form' );
		// Upload File button was clicked.
		$id = media_handle_upload( 'async-upload', $_REQUEST['post_id'] );
		unset( $_FILES );

		if ( is_wp_error( $id ) ) {
			$errors['upload_error'] = $id;
			$id                     = false;
		}
	}

	if ( ! empty( $_POST['insertonlybutton'] ) ) {
		$src = $_POST['src'];

		if ( ! empty( $src ) && ! strpos( $src, '://' ) ) {
			$src = "http://$src";
		}

		if ( isset( $_POST['media_type'] ) && 'image' != $_POST['media_type'] ) {
			$title = esc_html( wp_unslash( $_POST['title'] ) );
			if ( empty( $title ) ) {
				$title = esc_html( wp_basename( $src ) );
			}

			if ( $title && $src ) {
				$html = "<a href='" . esc_url( $src ) . "'>$title</a>";
			}

			$type = 'file';
			$ext  = preg_replace( '/^.+?\.([^.]+)$/', '$1', $src );

			if ( $ext ) {
				$ext_type = wp_ext2type( $ext );
				if ( 'audio' == $ext_type || 'video' == $ext_type ) {
					$type = $ext_type;
				}
			}

			/**
			 * Filters the URL sent to the editor for a specific media type.
			 *
			 * The dynamic portion of the hook name, `$type`, refers to the type
			 * of media being sent.
			 *
			 * @since 3.3.0
			 *
			 * @param string $html  HTML markup sent to the editor.
			 * @param string $src   Media source URL.
			 * @param string $title Media title.
			 */
			$html = apply_filters( "{$type}_send_to_editor_url", $html, esc_url_raw( $src ), $title );
		} else {
			$align = '';
			$alt   = esc_attr( wp_unslash( $_POST['alt'] ) );

			if ( isset( $_POST['align'] ) ) {
				$align = esc_attr( wp_unslash( $_POST['align'] ) );
				$class = " class='align$align'";
			}

			if ( ! empty( $src ) ) {
				$html = "<img src='" . esc_url( $src ) . "' alt='$alt'$class />";
			}

			/**
			 * Filters the image URL sent to the editor.
			 *
			 * @since 2.8.0
			 *
			 * @param string $html  HTML markup sent to the editor for an image.
			 * @param string $src   Image source URL.
			 * @param string $alt   Image alternate, or alt, text.
			 * @param string $align The image alignment. Default 'alignnone'. Possible values include
			 *                      'alignleft', 'aligncenter', 'alignright', 'alignnone'.
			 */
			$html = apply_filters( 'image_send_to_editor_url', $html, esc_url_raw( $src ), $alt, $align );
		}

		return media_send_to_editor( $html );
	}

	if ( isset( $_POST['save'] ) ) {
		$errors['upload_notice'] = __( 'Saved.' );
		wp_enqueue_script( 'admin-gallery' );

		return wp_iframe( 'media_upload_gallery_form', $errors );

	} elseif ( ! empty( $_POST ) ) {
		$return = media_upload_form_handler();

		if ( is_string( $return ) ) {
			return $return;
		}

		if ( is_array( $return ) ) {
			$errors = $return;
		}
	}

	if ( isset( $_GET['tab'] ) && 'type_url' === $_GET['tab'] ) {
		$type = 'image';

		if ( isset( $_GET['type'] ) && in_array( $_GET['type'], array( 'video', 'audio', 'file' ), true ) ) {
			$type = $_GET['type'];
		}

		return wp_iframe( 'media_upload_type_url_form', $type, $errors, $id );
	}

	return wp_iframe( 'media_upload_type_form', 'image', $errors, $id );
}

/**
 * Downloads an image from the specified URL and attaches it to a post.
 *
 * @since 2.6.0
 * @since 4.2.0 Introduced the `$return` parameter.
 * @since 4.8.0 Introduced the 'id' option within the `$return` parameter.
 * @since 5.3.0 The `$post_id` parameter was made optional.
 * @since 5.4.0 The original URL of the attachment is stored in the `_source_url`
 *              post meta value.
 *
 * @param string $file    The URL of the image to download.
 * @param int    $post_id Optional. The post ID the media is to be associated with.
 * @param string $desc    Optional. Description of the image.
 * @param string $return  Optional. Accepts 'html' (image tag html) or 'src' (URL),
 *                        or 'id' (attachment ID). Default 'html'.
 * @return string|WP_Error Populated HTML img tag on success, WP_Error object otherwise.
 */
function media_sideload_image( $file, $post_id = 0, $desc = null, $return = 'html' ) {
	if ( ! empty( $file ) ) {

		// Set variables for storage, fix file filename for query strings.
		preg_match( '/[^\?]+\.(jpe?g|jpe|gif|png)\b/i', $file, $matches );

		if ( ! $matches ) {
			return new WP_Error( 'image_sideload_failed', __( 'Invalid image URL.' ) );
		}

		$file_array         = array();
		$file_array['name'] = wp_basename( $matches[0] );

		// Download file to temp location.
		$file_array['tmp_name'] = download_url( $file );

		// If error storing temporarily, return the error.
		if ( is_wp_error( $file_array['tmp_name'] ) ) {
			return $file_array['tmp_name'];
		}

		// Do the validation and storage stuff.
		$id = media_handle_sideload( $file_array, $post_id, $desc );

		// If error storing permanently, unlink.
		if ( is_wp_error( $id ) ) {
			@unlink( $file_array['tmp_name'] );
			return $id;
		}

		// Store the original attachment source in meta.
		add_post_meta( $id, '_source_url', $file );

		// If attachment id was requested, return it.
		if ( 'id' === $return ) {
			return $id;
		}

		$src = wp_get_attachment_url( $id );
	}

	// Finally, check to make sure the file has been saved, then return the HTML.
	if ( ! empty( $src ) ) {
		if ( 'src' === $return ) {
			return $src;
		}

		$alt  = isset( $desc ) ? esc_attr( $desc ) : '';
		$html = "<img src='$src' alt='$alt' />";

		return $html;
	} else {
		return new WP_Error( 'image_sideload_failed' );
	}
}

/**
 * Retrieves the legacy media uploader form in an iframe.
 *
 * @since 2.5.0
 *
 * @return string|null
 */
function media_upload_gallery() {
	$errors = array();

	if ( ! empty( $_POST ) ) {
		$return = media_upload_form_handler();

		if ( is_string( $return ) ) {
			return $return;
		}

		if ( is_array( $return ) ) {
			$errors = $return;
		}
	}

	wp_enqueue_script( 'admin-gallery' );
	return wp_iframe( 'media_upload_gallery_form', $errors );
}

/**
 * Retrieves the legacy media library form in an iframe.
 *
 * @since 2.5.0
 *
 * @return string|null
 */
function media_upload_library() {
	$errors = array();

	if ( ! empty( $_POST ) ) {
		$return = media_upload_form_handler();

		if ( is_string( $return ) ) {
			return $return;
		}
		if ( is_array( $return ) ) {
			$errors = $return;
		}
	}

	return wp_iframe( 'media_upload_library_form', $errors );
}

/**
 * Retrieve HTML for the image alignment radio buttons with the specified one checked.
 *
 * @since 2.7.0
 *
 * @param WP_Post $post
 * @param string $checked
 * @return string
 */
function image_align_input_fields( $post, $checked = '' ) {

	if ( empty( $checked ) ) {
		$checked = get_user_setting( 'align', 'none' );
	}

	$alignments = array(
		'none'   => __( 'None' ),
		'left'   => __( 'Left' ),
		'center' => __( 'Center' ),
		'right'  => __( 'Right' ),
	);

	if ( ! array_key_exists( (string) $checked, $alignments ) ) {
		$checked = 'none';
	}

	$out = array();

	foreach ( $alignments as $name => $label ) {
		$name  = esc_attr( $name );
		$out[] = "<input type='radio' name='attachments[{$post->ID}][align]' id='image-align-{$name}-{$post->ID}' value='$name'" .
			( $checked == $name ? " checked='checked'" : '' ) .
			" /><label for='image-align-{$name}-{$post->ID}' class='align image-align-{$name}-label'>$label</label>";
	}

	return join( "\n", $out );
}

/**
 * Retrieve HTML for the size radio buttons with the specified one checked.
 *
 * @since 2.7.0
 *
 * @param WP_Post $post
 * @param bool|string $check
 * @return array
 */
function image_size_input_fields( $post, $check = '' ) {
	/**
	 * Filters the names and labels of the default image sizes.
	 *
	 * @since 3.3.0
	 *
	 * @param string[] $size_names Array of image size labels keyed by their name. Default values
	 *                             include 'Thumbnail', 'Medium', 'Large', and 'Full Size'.
	 */
	$size_names = apply_filters(
		'image_size_names_choose',
		array(
			'thumbnail' => __( 'Thumbnail' ),
			'medium'    => __( 'Medium' ),
			'large'     => __( 'Large' ),
			'full'      => __( 'Full Size' ),
		)
	);

	if ( empty( $check ) ) {
		$check = get_user_setting( 'imgsize', 'medium' );
	}

	$out = array();

	foreach ( $size_names as $size => $label ) {
		$downsize = image_downsize( $post->ID, $size );
		$checked  = '';

		// Is this size selectable?
		$enabled = ( $downsize[3] || 'full' == $size );
		$css_id  = "image-size-{$size}-{$post->ID}";

		// If this size is the default but that's not available, don't select it.
		if ( $size == $check ) {
			if ( $enabled ) {
				$checked = " checked='checked'";
			} else {
				$check = '';
			}
		} elseif ( ! $check && $enabled && 'thumbnail' != $size ) {
			/*
			 * If $check is not enabled, default to the first available size
			 * that's bigger than a thumbnail.
			 */
			$check   = $size;
			$checked = " checked='checked'";
		}

		$html = "<div class='image-size-item'><input type='radio' " . disabled( $enabled, false, false ) . "name='attachments[$post->ID][image-size]' id='{$css_id}' value='{$size}'$checked />";

		$html .= "<label for='{$css_id}'>$label</label>";

		// Only show the dimensions if that choice is available.
		if ( $enabled ) {
			$html .= " <label for='{$css_id}' class='help'>" . sprintf( '(%d&nbsp;&times;&nbsp;%d)', $downsize[1], $downsize[2] ) . '</label>';
		}
		$html .= '</div>';

		$out[] = $html;
	}

	return array(
		'label' => __( 'Size' ),
		'input' => 'html',
		'html'  => join( "\n", $out ),
	);
}

/**
 * Retrieve HTML for the Link URL buttons with the default link type as specified.
 *
 * @since 2.7.0
 *
 * @param WP_Post $post
 * @param string $url_type
 * @return string
 */
function image_link_input_fields( $post, $url_type = '' ) {

	$file = wp_get_attachment_url( $post->ID );
	$link = get_attachment_link( $post->ID );

	if ( empty( $url_type ) ) {
		$url_type = get_user_setting( 'urlbutton', 'post' );
	}

	$url = '';

	if ( 'file' === $url_type ) {
		$url = $file;
	} elseif ( 'post' === $url_type ) {
		$url = $link;
	}

	return "
	<input type='text' class='text urlfield' name='attachments[$post->ID][url]' value='" . esc_attr( $url ) . "' /><br />
	<button type='button' class='button urlnone' data-link-url=''>" . __( 'None' ) . "</button>
	<button type='button' class='button urlfile' data-link-url='" . esc_attr( $file ) . "'>" . __( 'File URL' ) . "</button>
	<button type='button' class='button urlpost' data-link-url='" . esc_attr( $link ) . "'>" . __( 'Attachment Post URL' ) . '</button>
';
}

/**
 * Output a textarea element for inputting an attachment caption.
 *
 * @since 3.4.0
 *
 * @param WP_Post $edit_post Attachment WP_Post object.
 * @return string HTML markup for the textarea element.
 */
function wp_caption_input_textarea( $edit_post ) {
	// Post data is already escaped.
	$name = "attachments[{$edit_post->ID}][post_excerpt]";

	return '<textarea name="' . $name . '" id="' . $name . '">' . $edit_post->post_excerpt . '</textarea>';
}

/**
 * Retrieves the image attachment fields to edit form fields.
 *
 * @since 2.5.0
 *
 * @param array $form_fields
 * @param object $post
 * @return array
 */
function image_attachment_fields_to_edit( $form_fields, $post ) {
	return $form_fields;
}

/**
 * Retrieves the single non-image attachment fields to edit form fields.
 *
 * @since 2.5.0
 *
 * @param array   $form_fields An array of attachment form fields.
 * @param WP_Post $post        The WP_Post attachment object.
 * @return array Filtered attachment form fields.
 */
function media_single_attachment_fields_to_edit( $form_fields, $post ) {
	unset( $form_fields['url'], $form_fields['align'], $form_fields['image-size'] );
	return $form_fields;
}

/**
 * Retrieves the post non-image attachment fields to edit form fields.
 *
 * @since 2.8.0
 *
 * @param array   $form_fields An array of attachment form fields.
 * @param WP_Post $post        The WP_Post attachment object.
 * @return array Filtered attachment form fields.
 */
function media_post_single_attachment_fields_to_edit( $form_fields, $post ) {
	unset( $form_fields['image_url'] );
	return $form_fields;
}

/**
 * Filters input from media_upload_form_handler() and assigns a default
 * post_title from the file name if none supplied.
 *
 * Illustrates the use of the {@see 'attachment_fields_to_save'} filter
 * which can be used to add default values to any field before saving to DB.
 *
 * @since 2.5.0
 *
 * @param array $post       The WP_Post attachment object converted to an array.
 * @param array $attachment An array of attachment metadata.
 * @return array Filtered attachment post object.
 */
function image_attachment_fields_to_save( $post, $attachment ) {
	if ( substr( $post['post_mime_type'], 0, 5 ) == 'image' ) {
		if ( strlen( trim( $post['post_title'] ) ) == 0 ) {
			$attachment_url                           = ( isset( $post['attachment_url'] ) ) ? $post['attachment_url'] : $post['guid'];
			$post['post_title']                       = preg_replace( '/\.\w+$/', '', wp_basename( $attachment_url ) );
			$post['errors']['post_title']['errors'][] = __( 'Empty Title filled from filename.' );
		}
	}

	return $post;
}

/**
 * Retrieves the media element HTML to send to the editor.
 *
 * @since 2.5.0
 *
 * @param string $html
 * @param integer $attachment_id
 * @param array $attachment
 * @return string
 */
function image_media_send_to_editor( $html, $attachment_id, $attachment ) {
	$post = get_post( $attachment_id );

	if ( substr( $post->post_mime_type, 0, 5 ) == 'image' ) {
		$url   = $attachment['url'];
		$align = ! empty( $attachment['align'] ) ? $attachment['align'] : 'none';
		$size  = ! empty( $attachment['image-size'] ) ? $attachment['image-size'] : 'medium';
		$alt   = ! empty( $attachment['image_alt'] ) ? $attachment['image_alt'] : '';
		$rel   = ( strpos( $url, 'attachment_id' ) || get_attachment_link( $attachment_id ) === $url );

		return get_image_send_to_editor( $attachment_id, $attachment['post_excerpt'], $attachment['post_title'], $align, $url, $rel, $size, $alt );
	}

	return $html;
}

/**
 * Retrieves the attachment fields to edit form fields.
 *
 * @since 2.5.0
 *
 * @param WP_Post $post
 * @param array $errors
 * @return array
 */
function get_attachment_fields_to_edit( $post, $errors = null ) {
	if ( is_int( $post ) ) {
		$post = get_post( $post );
	}

	if ( is_array( $post ) ) {
		$post = new WP_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,
		),
		'image_alt'    => array(),
		'post_excerpt' => array(
			'label' => __( 'Caption' ),
			'input' => 'html',
			'html'  => wp_caption_input_textarea( $edit_post ),
		),
		'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' => $edit_post->menu_order,
		),
		'image_url'    => array(
			'label' => __( 'File URL' ),
			'input' => 'html',
			'html'  => "<input type='text' class='text urlfield' readonly='readonly' name='attachments[$post->ID][url]' value='" . esc_attr( $image_url ) . "' /><br />",
			'value' => wp_get_attachment_url( $post->ID ),
			'helps' => __( 'Location of the uploaded file.' ),
		),
	);

	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 );

		$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 );

	// This was formerly in image_attachment_fields_to_edit().
	if ( substr( $post->post_mime_type, 0, 5 ) == 'image' ) {
		$alt = get_post_meta( $post->ID, '_wp_attachment_image_alt', true );

		if ( empty( $alt ) ) {
			$alt = '';
		}

		$form_fields['post_title']['required'] = true;

		$form_fields['image_alt'] = array(
			'value' => $alt,
			'label' => __( 'Alternative Text' ),
			'helps' => __( 'Alt text for the image, e.g. &#8220;The Mona Lisa&#8221;' ),
		);

		$form_fields['align'] = array(
			'label' => __( 'Alignment' ),
			'input' => 'html',
			'html'  => image_align_input_fields( $post, get_option( 'image_default_align' ) ),
		);

		$form_fields['image-size'] = image_size_input_fields( $post, get_option( 'image_default_size', 'medium' ) );

	} else {
		unset( $form_fields['image_alt'] );
	}

	/**
	 * Filters the attachment fields to edit.
	 *
	 * @since 2.5.0
	 *
	 * @param array   $form_fields An array of attachment form fields.
	 * @param WP_Post $post        The WP_Post attachment object.
	 */
	$form_fields = apply_filters( 'attachment_fields_to_edit', $form_fields, $post );

	return $form_fields;
}

/**
 * Retrieve HTML for media items of post gallery.
 *
 * The HTML markup retrieved will be created for the progress of SWF Upload
 * component. Will also create link for showing and hiding the form to modify
 * the image attachment.
 *
 * @since 2.5.0
 *
 * @global WP_Query $wp_the_query WordPress Query object.
 *
 * @param int $post_id Optional. Post ID.
 * @param array $errors Errors for attachment, if any.
 * @return string
 */
function get_media_items( $post_id, $errors ) {
	$attachments = array();

	if ( $post_id ) {
		$post = get_post( $post_id );

		if ( $post && 'attachment' === $post->post_type ) {
			$attachments = array( $post->ID => $post );
		} else {
			$attachments = get_children(
				array(
					'post_parent' => $post_id,
					'post_type'   => 'attachment',
					'orderby'     => 'menu_order ASC, ID',
					'order'       => 'DESC',
				)
			);
		}
	} else {
		if ( is_array( $GLOBALS['wp_the_query']->posts ) ) {
			foreach ( $GLOBALS['wp_the_query']->posts as $attachment ) {
				$attachments[ $attachment->ID ] = $attachment;
			}
		}
	}

	$output = '';
	foreach ( (array) $attachments as $id => $attachment ) {
		if ( 'trash' === $attachment->post_status ) {
			continue;
		}

		$item = get_media_item( $id, array( 'errors' => isset( $errors[ $id ] ) ? $errors[ $id ] : null ) );

		if ( $item ) {
			$output .= "\n<div id='media-item-$id' class='media-item child-of-$attachment->post_parent preloaded'><div class='progress hidden'><div class='bar'></div></div><div id='media-upload-error-$id' class='hidden'></div><div class='filename hidden'></div>$item\n</div>";
		}
	}

	return $output;
}

/**
 * Retrieve HTML form for modifying the image attachment.
 *
 * @since 2.5.0
 *
 * @global string $redir_tab
 *
 * @param int $attachment_id Attachment ID for modification.
 * @param string|array $args Optional. Override defaults.
 * @return string HTML form for attachment.
 */
function get_media_item( $attachment_id, $args = null ) {
	global $redir_tab;

	$thumb_url     = false;
	$attachment_id = intval( $attachment_id );

	if ( $attachment_id ) {
		$thumb_url = wp_get_attachment_image_src( $attachment_id, 'thumbnail', true );

		if ( $thumb_url ) {
			$thumb_url = $thumb_url[0];
		}
	}

	$post            = get_post( $attachment_id );
	$current_post_id = ! empty( $_GET['post_id'] ) ? (int) $_GET['post_id'] : 0;

	$default_args = array(
		'errors'     => null,
		'send'       => $current_post_id ? post_type_supports( get_post_type( $current_post_id ), 'editor' ) : true,
		'delete'     => true,
		'toggle'     => true,
		'show_title' => true,
	);

	$parsed_args = wp_parse_args( $args, $default_args );

	/**
	 * Filters the arguments used to retrieve an image for the edit image form.
	 *
	 * @since 3.1.0
	 *
	 * @see get_media_item
	 *
	 * @param array $parsed_args An array of arguments.
	 */
	$parsed_args = apply_filters( 'get_media_item_args', $parsed_args );

	$toggle_on  = __( 'Show' );
	$toggle_off = __( 'Hide' );

	$file     = get_attached_file( $post->ID );
	$filename = esc_html( wp_basename( $file ) );
	$title    = esc_attr( $post->post_title );

	$post_mime_types = get_post_mime_types();
	$keys            = array_keys( wp_match_mime_types( array_keys( $post_mime_types ), $post->post_mime_type ) );
	$type            = reset( $keys );
	$type_html       = "<input type='hidden' id='type-of-$attachment_id' value='" . esc_attr( $type ) . "' />";

	$form_fields = get_attachment_fields_to_edit( $post, $parsed_args['errors'] );

	if ( $parsed_args['toggle'] ) {
		$class        = empty( $parsed_args['errors'] ) ? 'startclosed' : 'startopen';
		$toggle_links = "
		<a class='toggle describe-toggle-on' href='#'>$toggle_on</a>
		<a class='toggle describe-toggle-off' href='#'>$toggle_off</a>";
	} else {
		$class        = '';
		$toggle_links = '';
	}

	$display_title = ( ! empty( $title ) ) ? $title : $filename; // $title shouldn't ever be empty, but just in case.
	$display_title = $parsed_args['show_title'] ? "<div class='filename new'><span class='title'>" . wp_html_excerpt( $display_title, 60, '&hellip;' ) . '</span></div>' : '';

	$gallery = ( ( isset( $_REQUEST['tab'] ) && 'gallery' == $_REQUEST['tab'] ) || ( isset( $redir_tab ) && 'gallery' == $redir_tab ) );
	$order   = '';

	foreach ( $form_fields as $key => $val ) {
		if ( 'menu_order' == $key ) {
			if ( $gallery ) {
				$order = "<div class='menu_order'> <input class='menu_order_input' type='text' id='attachments[$attachment_id][menu_order]' name='attachments[$attachment_id][menu_order]' value='" . esc_attr( $val['value'] ) . "' /></div>";
			} else {
				$order = "<input type='hidden' name='attachments[$attachment_id][menu_order]' value='" . esc_attr( $val['value'] ) . "' />";
			}

			unset( $form_fields['menu_order'] );
			break;
		}
	}

	$media_dims = '';
	$meta       = wp_get_attachment_metadata( $post->ID );

	if ( isset( $meta['width'], $meta['height'] ) ) {
		$media_dims .= "<span id='media-dims-$post->ID'>{$meta['width']}&nbsp;&times;&nbsp;{$meta['height']}</span> ";
	}

	/**
	 * Filters the media metadata.
	 *
	 * @since 2.5.0
	 *
	 * @param string  $media_dims The HTML markup containing the media dimensions.
	 * @param WP_Post $post       The WP_Post attachment object.
	 */
	$media_dims = apply_filters( 'media_meta', $media_dims, $post );

	$image_edit_button = '';

	if ( wp_attachment_is_image( $post->ID ) && wp_image_editor_supports( array( 'mime_type' => $post->post_mime_type ) ) ) {
		$nonce             = wp_create_nonce( "image_editor-$post->ID" );
		$image_edit_button = "<input type='button' id='imgedit-open-btn-$post->ID' onclick='imageEdit.open( $post->ID, \"$nonce\" )' class='button' value='" . esc_attr__( 'Edit Image' ) . "' /> <span class='spinner'></span>";
	}

	$attachment_url = get_permalink( $attachment_id );

	$item = "
		$type_html
		$toggle_links
		$order
		$display_title
		<table class='slidetoggle describe $class'>
			<thead class='media-item-info' id='media-head-$post->ID'>
			<tr>
			<td class='A1B1' id='thumbnail-head-$post->ID'>
			<p><a href='$attachment_url' target='_blank'><img class='thumbnail' src='$thumb_url' alt='' /></a></p>
			<p>$image_edit_button</p>
			</td>
			<td>
			<p><strong>" . __( 'File name:' ) . "</strong> $filename</p>
			<p><strong>" . __( 'File type:' ) . "</strong> $post->post_mime_type</p>
			<p><strong>" . __( 'Upload date:' ) . '</strong> ' . mysql2date( __( 'F j, Y' ), $post->post_date ) . '</p>';

	if ( ! empty( $media_dims ) ) {
		$item .= '<p><strong>' . __( 'Dimensions:' ) . "</strong> $media_dims</p>\n";
	}

	$item .= "</td></tr>\n";

	$item .= "
		</thead>
		<tbody>
		<tr><td colspan='2' class='imgedit-response' id='imgedit-response-$post->ID'></td></tr>\n
		<tr><td style='display:none' colspan='2' class='image-editor' id='image-editor-$post->ID'></td></tr>\n
		<tr><td colspan='2'><p class='media-types media-types-required-info'>" .
			/* translators: %s: Asterisk sy…