diff -r 000000000000 -r d970ebf37754 wp/wp-includes/media.php --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wp/wp-includes/media.php Wed Nov 06 03:21:17 2013 +0000 @@ -0,0 +1,2091 @@ + 0 ) + $max_width = min( intval($content_width), $max_width ); + } elseif ( isset( $_wp_additional_image_sizes ) && count( $_wp_additional_image_sizes ) && in_array( $size, array_keys( $_wp_additional_image_sizes ) ) ) { + $max_width = intval( $_wp_additional_image_sizes[$size]['width'] ); + $max_height = intval( $_wp_additional_image_sizes[$size]['height'] ); + if ( intval($content_width) > 0 && 'edit' == $context ) // Only in admin. Assume that theme authors know what they're doing. + $max_width = min( intval($content_width), $max_width ); + } + // $size == 'full' has no constraint + else { + $max_width = $width; + $max_height = $height; + } + + list( $max_width, $max_height ) = apply_filters( 'editor_max_image_size', array( $max_width, $max_height ), $size, $context ); + + return wp_constrain_dimensions( $width, $height, $max_width, $max_height ); +} + +/** + * Retrieve width and height attributes using given width and height values. + * + * Both attributes are required in the sense that both parameters must have a + * value, but are optional in that if you set them to false or null, then they + * will not be added to the returned string. + * + * You can set the value using a string, but it will only take numeric values. + * If you wish to put 'px' after the numbers, then it will be stripped out of + * the return. + * + * @since 2.5.0 + * + * @param int|string $width Optional. Width attribute value. + * @param int|string $height Optional. Height attribute value. + * @return string HTML attributes for width and, or height. + */ +function image_hwstring($width, $height) { + $out = ''; + if ($width) + $out .= 'width="'.intval($width).'" '; + if ($height) + $out .= 'height="'.intval($height).'" '; + return $out; +} + +/** + * Scale an image to fit a particular size (such as 'thumb' or 'medium'). + * + * Array with image url, width, height, and whether is intermediate size, in + * that order is returned on success is returned. $is_intermediate is true if + * $url is a resized image, false if it is the original. + * + * The URL might be the original image, or it might be a resized version. This + * function won't create a new resized copy, it will just return an already + * resized one if it exists. + * + * A plugin may use the 'image_downsize' filter to hook into and offer image + * resizing services for images. The hook must return an array with the same + * elements that are returned in the function. The first element being the URL + * to the new image that was resized. + * + * @since 2.5.0 + * @uses apply_filters() Calls 'image_downsize' on $id and $size to provide + * resize services. + * + * @param int $id Attachment ID for image. + * @param array|string $size Optional, default is 'medium'. Size of image, either array or string. + * @return bool|array False on failure, array on success. + */ +function image_downsize($id, $size = 'medium') { + + if ( !wp_attachment_is_image($id) ) + return false; + + // plugins can use this to provide resize services + if ( $out = apply_filters( 'image_downsize', false, $id, $size ) ) + return $out; + + $img_url = wp_get_attachment_url($id); + $meta = wp_get_attachment_metadata($id); + $width = $height = 0; + $is_intermediate = false; + $img_url_basename = wp_basename($img_url); + + // try for a new style intermediate size + if ( $intermediate = image_get_intermediate_size($id, $size) ) { + $img_url = str_replace($img_url_basename, $intermediate['file'], $img_url); + $width = $intermediate['width']; + $height = $intermediate['height']; + $is_intermediate = true; + } + elseif ( $size == 'thumbnail' ) { + // fall back to the old thumbnail + if ( ($thumb_file = wp_get_attachment_thumb_file($id)) && $info = getimagesize($thumb_file) ) { + $img_url = str_replace($img_url_basename, wp_basename($thumb_file), $img_url); + $width = $info[0]; + $height = $info[1]; + $is_intermediate = true; + } + } + if ( !$width && !$height && isset( $meta['width'], $meta['height'] ) ) { + // any other type: use the real image + $width = $meta['width']; + $height = $meta['height']; + } + + if ( $img_url) { + // we have the actual image size, but might need to further constrain it if content_width is narrower + list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size ); + + return array( $img_url, $width, $height, $is_intermediate ); + } + return false; + +} + +/** + * Registers a new image size + * + * @since 2.9.0 + */ +function add_image_size( $name, $width = 0, $height = 0, $crop = false ) { + global $_wp_additional_image_sizes; + $_wp_additional_image_sizes[$name] = array( 'width' => absint( $width ), 'height' => absint( $height ), 'crop' => (bool) $crop ); +} + +/** + * Registers an image size for the post thumbnail + * + * @since 2.9.0 + */ +function set_post_thumbnail_size( $width = 0, $height = 0, $crop = false ) { + add_image_size( 'post-thumbnail', $width, $height, $crop ); +} + +/** + * An tag for an image attachment, scaling it down if requested. + * + * The filter 'get_image_tag_class' allows for changing the class name for the + * image without having to use regular expressions on the HTML content. The + * parameters are: what WordPress will use for the class, the Attachment ID, + * image align value, and the size the image should be. + * + * The second filter 'get_image_tag' has the HTML content, which can then be + * further manipulated by a plugin to change all attribute values and even HTML + * content. + * + * @since 2.5.0 + * + * @uses apply_filters() The 'get_image_tag_class' filter is the IMG element + * class attribute. + * @uses apply_filters() The 'get_image_tag' filter is the full IMG element with + * all attributes. + * + * @param int $id Attachment ID. + * @param string $alt Image Description for the alt attribute. + * @param string $title Image Description for the title attribute. + * @param string $align Part of the class name for aligning the image. + * @param string $size Optional. Default is 'medium'. + * @return string HTML IMG element for given image attachment + */ +function get_image_tag($id, $alt, $title, $align, $size='medium') { + + list( $img_src, $width, $height ) = image_downsize($id, $size); + $hwstring = image_hwstring($width, $height); + + $title = $title ? 'title="' . esc_attr( $title ) . '" ' : ''; + + $class = 'align' . esc_attr($align) .' size-' . esc_attr($size) . ' wp-image-' . $id; + $class = apply_filters('get_image_tag_class', $class, $id, $align, $size); + + $html = '' . esc_attr($alt) . ''; + + $html = apply_filters( 'get_image_tag', $html, $id, $alt, $title, $align, $size ); + + return $html; +} + +/** + * Calculates the new dimensions for a downsampled image. + * + * If either width or height are empty, no constraint is applied on + * that dimension. + * + * @since 2.5.0 + * + * @param int $current_width Current width of the image. + * @param int $current_height Current height of the image. + * @param int $max_width Optional. Maximum wanted width. + * @param int $max_height Optional. Maximum wanted height. + * @return array First item is the width, the second item is the height. + */ +function wp_constrain_dimensions( $current_width, $current_height, $max_width=0, $max_height=0 ) { + if ( !$max_width and !$max_height ) + return array( $current_width, $current_height ); + + $width_ratio = $height_ratio = 1.0; + $did_width = $did_height = false; + + if ( $max_width > 0 && $current_width > 0 && $current_width > $max_width ) { + $width_ratio = $max_width / $current_width; + $did_width = true; + } + + if ( $max_height > 0 && $current_height > 0 && $current_height > $max_height ) { + $height_ratio = $max_height / $current_height; + $did_height = true; + } + + // Calculate the larger/smaller ratios + $smaller_ratio = min( $width_ratio, $height_ratio ); + $larger_ratio = max( $width_ratio, $height_ratio ); + + if ( intval( $current_width * $larger_ratio ) > $max_width || intval( $current_height * $larger_ratio ) > $max_height ) + // The larger ratio is too big. It would result in an overflow. + $ratio = $smaller_ratio; + else + // The larger ratio fits, and is likely to be a more "snug" fit. + $ratio = $larger_ratio; + + // Very small dimensions may result in 0, 1 should be the minimum. + $w = max ( 1, intval( $current_width * $ratio ) ); + $h = max ( 1, intval( $current_height * $ratio ) ); + + // Sometimes, due to rounding, we'll end up with a result like this: 465x700 in a 177x177 box is 117x176... a pixel short + // We also have issues with recursive calls resulting in an ever-changing result. Constraining to the result of a constraint should yield the original result. + // Thus we look for dimensions that are one pixel shy of the max value and bump them up + if ( $did_width && $w == $max_width - 1 ) + $w = $max_width; // Round it up + if ( $did_height && $h == $max_height - 1 ) + $h = $max_height; // Round it up + + return array( $w, $h ); +} + +/** + * Retrieve calculated resized dimensions for use in WP_Image_Editor. + * + * Calculate dimensions and coordinates for a resized image that fits within a + * specified width and height. If $crop is true, the largest matching central + * portion of the image will be cropped out and resized to the required size. + * + * @since 2.5.0 + * @uses apply_filters() Calls 'image_resize_dimensions' on $orig_w, $orig_h, $dest_w, $dest_h and + * $crop to provide custom resize dimensions. + * + * @param int $orig_w Original width. + * @param int $orig_h Original height. + * @param int $dest_w New width. + * @param int $dest_h New height. + * @param bool $crop Optional, default is false. Whether to crop image or resize. + * @return bool|array False on failure. Returned array matches parameters for imagecopyresampled() PHP function. + */ +function image_resize_dimensions($orig_w, $orig_h, $dest_w, $dest_h, $crop = false) { + + if ($orig_w <= 0 || $orig_h <= 0) + return false; + // at least one of dest_w or dest_h must be specific + if ($dest_w <= 0 && $dest_h <= 0) + return false; + + // plugins can use this to provide custom resize dimensions + $output = apply_filters( 'image_resize_dimensions', null, $orig_w, $orig_h, $dest_w, $dest_h, $crop ); + if ( null !== $output ) + return $output; + + if ( $crop ) { + // crop the largest possible portion of the original image that we can size to $dest_w x $dest_h + $aspect_ratio = $orig_w / $orig_h; + $new_w = min($dest_w, $orig_w); + $new_h = min($dest_h, $orig_h); + + if ( !$new_w ) { + $new_w = intval($new_h * $aspect_ratio); + } + + if ( !$new_h ) { + $new_h = intval($new_w / $aspect_ratio); + } + + $size_ratio = max($new_w / $orig_w, $new_h / $orig_h); + + $crop_w = round($new_w / $size_ratio); + $crop_h = round($new_h / $size_ratio); + + $s_x = floor( ($orig_w - $crop_w) / 2 ); + $s_y = floor( ($orig_h - $crop_h) / 2 ); + } else { + // don't crop, just resize using $dest_w x $dest_h as a maximum bounding box + $crop_w = $orig_w; + $crop_h = $orig_h; + + $s_x = 0; + $s_y = 0; + + list( $new_w, $new_h ) = wp_constrain_dimensions( $orig_w, $orig_h, $dest_w, $dest_h ); + } + + // if the resulting image would be the same size or larger we don't want to resize it + if ( $new_w >= $orig_w && $new_h >= $orig_h ) + return false; + + // the return array matches the parameters to imagecopyresampled() + // int dst_x, int dst_y, int src_x, int src_y, int dst_w, int dst_h, int src_w, int src_h + return array( 0, 0, (int) $s_x, (int) $s_y, (int) $new_w, (int) $new_h, (int) $crop_w, (int) $crop_h ); + +} + +/** + * Resize an image to make a thumbnail or intermediate size. + * + * The returned array has the file size, the image width, and image height. The + * filter 'image_make_intermediate_size' can be used to hook in and change the + * values of the returned array. The only parameter is the resized file path. + * + * @since 2.5.0 + * + * @param string $file File path. + * @param int $width Image width. + * @param int $height Image height. + * @param bool $crop Optional, default is false. Whether to crop image to specified height and width or resize. + * @return bool|array False, if no image was created. Metadata array on success. + */ +function image_make_intermediate_size( $file, $width, $height, $crop = false ) { + if ( $width || $height ) { + $editor = wp_get_image_editor( $file ); + + if ( is_wp_error( $editor ) || is_wp_error( $editor->resize( $width, $height, $crop ) ) ) + return false; + + $resized_file = $editor->save(); + + if ( ! is_wp_error( $resized_file ) && $resized_file ) { + unset( $resized_file['path'] ); + return $resized_file; + } + } + return false; +} + +/** + * Retrieve the image's intermediate size (resized) path, width, and height. + * + * The $size parameter can be an array with the width and height respectively. + * If the size matches the 'sizes' metadata array for width and height, then it + * will be used. If there is no direct match, then the nearest image size larger + * than the specified size will be used. If nothing is found, then the function + * will break out and return false. + * + * The metadata 'sizes' is used for compatible sizes that can be used for the + * parameter $size value. + * + * The url path will be given, when the $size parameter is a string. + * + * If you are passing an array for the $size, you should consider using + * add_image_size() so that a cropped version is generated. It's much more + * efficient than having to find the closest-sized image and then having the + * browser scale down the image. + * + * @since 2.5.0 + * @see add_image_size() + * + * @param int $post_id Attachment ID for image. + * @param array|string $size Optional, default is 'thumbnail'. Size of image, either array or string. + * @return bool|array False on failure or array of file path, width, and height on success. + */ +function image_get_intermediate_size($post_id, $size='thumbnail') { + if ( !is_array( $imagedata = wp_get_attachment_metadata( $post_id ) ) ) + return false; + + // get the best one for a specified set of dimensions + if ( is_array($size) && !empty($imagedata['sizes']) ) { + foreach ( $imagedata['sizes'] as $_size => $data ) { + // already cropped to width or height; so use this size + if ( ( $data['width'] == $size[0] && $data['height'] <= $size[1] ) || ( $data['height'] == $size[1] && $data['width'] <= $size[0] ) ) { + $file = $data['file']; + list($width, $height) = image_constrain_size_for_editor( $data['width'], $data['height'], $size ); + return compact( 'file', 'width', 'height' ); + } + // add to lookup table: area => size + $areas[$data['width'] * $data['height']] = $_size; + } + if ( !$size || !empty($areas) ) { + // find for the smallest image not smaller than the desired size + ksort($areas); + foreach ( $areas as $_size ) { + $data = $imagedata['sizes'][$_size]; + if ( $data['width'] >= $size[0] || $data['height'] >= $size[1] ) { + // Skip images with unexpectedly divergent aspect ratios (crops) + // First, we calculate what size the original image would be if constrained to a box the size of the current image in the loop + $maybe_cropped = image_resize_dimensions($imagedata['width'], $imagedata['height'], $data['width'], $data['height'], false ); + // If the size doesn't match within one pixel, then it is of a different aspect ratio, so we skip it, unless it's the thumbnail size + if ( 'thumbnail' != $_size && ( !$maybe_cropped || ( $maybe_cropped[4] != $data['width'] && $maybe_cropped[4] + 1 != $data['width'] ) || ( $maybe_cropped[5] != $data['height'] && $maybe_cropped[5] + 1 != $data['height'] ) ) ) + continue; + // If we're still here, then we're going to use this size + $file = $data['file']; + list($width, $height) = image_constrain_size_for_editor( $data['width'], $data['height'], $size ); + return compact( 'file', 'width', 'height' ); + } + } + } + } + + if ( is_array($size) || empty($size) || empty($imagedata['sizes'][$size]) ) + return false; + + $data = $imagedata['sizes'][$size]; + // include the full filesystem path of the intermediate file + if ( empty($data['path']) && !empty($data['file']) ) { + $file_url = wp_get_attachment_url($post_id); + $data['path'] = path_join( dirname($imagedata['file']), $data['file'] ); + $data['url'] = path_join( dirname($file_url), $data['file'] ); + } + return $data; +} + +/** + * Get the available image sizes + * @since 3.0.0 + * @return array Returns a filtered array of image size strings + */ +function get_intermediate_image_sizes() { + global $_wp_additional_image_sizes; + $image_sizes = array('thumbnail', 'medium', 'large'); // Standard sizes + if ( isset( $_wp_additional_image_sizes ) && count( $_wp_additional_image_sizes ) ) + $image_sizes = array_merge( $image_sizes, array_keys( $_wp_additional_image_sizes ) ); + + return apply_filters( 'intermediate_image_sizes', $image_sizes ); +} + +/** + * Retrieve an image to represent an attachment. + * + * A mime icon for files, thumbnail or intermediate size for images. + * + * @since 2.5.0 + * + * @param int $attachment_id Image attachment ID. + * @param string $size Optional, default is 'thumbnail'. + * @param bool $icon Optional, default is false. Whether it is an icon. + * @return bool|array Returns an array (url, width, height), or false, if no image is available. + */ +function wp_get_attachment_image_src($attachment_id, $size='thumbnail', $icon = false) { + + // get a thumbnail or intermediate image if there is one + if ( $image = image_downsize($attachment_id, $size) ) + return $image; + + $src = false; + + if ( $icon && $src = wp_mime_type_icon($attachment_id) ) { + $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/crystal' ); + $src_file = $icon_dir . '/' . wp_basename($src); + @list($width, $height) = getimagesize($src_file); + } + if ( $src && $width && $height ) + return array( $src, $width, $height ); + return false; +} + +/** + * Get an HTML img element representing an image attachment + * + * While $size will accept an array, it is better to register a size with + * add_image_size() so that a cropped version is generated. It's much more + * efficient than having to find the closest-sized image and then having the + * browser scale down the image. + * + * @see add_image_size() + * @uses apply_filters() Calls 'wp_get_attachment_image_attributes' hook on attributes array + * @uses wp_get_attachment_image_src() Gets attachment file URL and dimensions + * @since 2.5.0 + * + * @param int $attachment_id Image attachment ID. + * @param string $size Optional, default is 'thumbnail'. + * @param bool $icon Optional, default is false. Whether it is an icon. + * @param mixed $attr Optional, attributes for the image markup. + * @return string HTML img element or empty string on failure. + */ +function wp_get_attachment_image($attachment_id, $size = 'thumbnail', $icon = false, $attr = '') { + + $html = ''; + $image = wp_get_attachment_image_src($attachment_id, $size, $icon); + if ( $image ) { + list($src, $width, $height) = $image; + $hwstring = image_hwstring($width, $height); + if ( is_array($size) ) + $size = join('x', $size); + $attachment = get_post($attachment_id); + $default_attr = array( + 'src' => $src, + 'class' => "attachment-$size", + 'alt' => trim(strip_tags( get_post_meta($attachment_id, '_wp_attachment_image_alt', true) )), // Use Alt field first + ); + if ( empty($default_attr['alt']) ) + $default_attr['alt'] = trim(strip_tags( $attachment->post_excerpt )); // If not, Use the Caption + if ( empty($default_attr['alt']) ) + $default_attr['alt'] = trim(strip_tags( $attachment->post_title )); // Finally, use the title + + $attr = wp_parse_args($attr, $default_attr); + $attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment ); + $attr = array_map( 'esc_attr', $attr ); + $html = rtrim(" $value ) { + $html .= " $name=" . '"' . $value . '"'; + } + $html .= ' />'; + } + + return $html; +} + +/** + * Adds a 'wp-post-image' class to post thumbnails + * Uses the begin_fetch_post_thumbnail_html and end_fetch_post_thumbnail_html action hooks to + * dynamically add/remove itself so as to only filter post thumbnails + * + * @since 2.9.0 + * @param array $attr Attributes including src, class, alt, title + * @return array + */ +function _wp_post_thumbnail_class_filter( $attr ) { + $attr['class'] .= ' wp-post-image'; + return $attr; +} + +/** + * Adds _wp_post_thumbnail_class_filter to the wp_get_attachment_image_attributes filter + * + * @since 2.9.0 + */ +function _wp_post_thumbnail_class_filter_add( $attr ) { + add_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' ); +} + +/** + * Removes _wp_post_thumbnail_class_filter from the wp_get_attachment_image_attributes filter + * + * @since 2.9.0 + */ +function _wp_post_thumbnail_class_filter_remove( $attr ) { + remove_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' ); +} + +add_shortcode('wp_caption', 'img_caption_shortcode'); +add_shortcode('caption', 'img_caption_shortcode'); + +/** + * The Caption shortcode. + * + * Allows a plugin to replace the content that would otherwise be returned. The + * filter is 'img_caption_shortcode' and passes an empty string, the attr + * parameter and the content parameter values. + * + * The supported attributes for the shortcode are 'id', 'align', 'width', and + * 'caption'. + * + * @since 2.6.0 + * + * @param array $attr Attributes attributed to the shortcode. + * @param string $content Optional. Shortcode content. + * @return string + */ +function img_caption_shortcode($attr, $content = null) { + // New-style shortcode with the caption inside the shortcode with the link and image tags. + if ( ! isset( $attr['caption'] ) ) { + if ( preg_match( '#((?:]+>\s*)?]+>(?:\s*)?)(.*)#is', $content, $matches ) ) { + $content = $matches[1]; + $attr['caption'] = trim( $matches[2] ); + } + } + + // Allow plugins/themes to override the default caption template. + $output = apply_filters('img_caption_shortcode', '', $attr, $content); + if ( $output != '' ) + return $output; + + $atts = shortcode_atts( array( + 'id' => '', + 'align' => 'alignnone', + 'width' => '', + 'caption' => '' + ), $attr, 'caption' ); + + $atts['width'] = (int) $atts['width']; + if ( $atts['width'] < 1 || empty( $atts['caption'] ) ) + return $content; + + if ( ! empty( $atts['id'] ) ) + $atts['id'] = 'id="' . esc_attr( $atts['id'] ) . '" '; + + $caption_width = 10 + $atts['width']; + + /** + * Filter the width of an image's caption. + * + * By default, the caption is 10 pixels greater than the width of the image, + * to prevent post content from running up against a floated image. + * + * @since 3.7.0 + * + * @param int $caption_width Width in pixels. To remove this inline style, return zero. + * @param array $atts { + * The attributes of the caption shortcode. + * + * @type string 'id' The ID of the div element for the caption. + * @type string 'align' The class name that aligns the caption. Default 'alignnone'. + * @type int 'width' The width of the image being captioned. + * @type string 'caption' The image's caption. + * } + * @param string $content The image element, possibly wrapped in a hyperlink. + */ + $caption_width = apply_filters( 'img_caption_shortcode_width', $caption_width, $atts, $content ); + + $style = ''; + if ( $caption_width ) + $style = 'style="width: ' . (int) $caption_width . 'px" '; + + return '
' + . do_shortcode( $content ) . '

' . $atts['caption'] . '

'; +} + +add_shortcode('gallery', 'gallery_shortcode'); + +/** + * The Gallery shortcode. + * + * This implements the functionality of the Gallery Shortcode for displaying + * WordPress images on a post. + * + * @since 2.5.0 + * + * @param array $attr Attributes of the shortcode. + * @return string HTML content to display gallery. + */ +function gallery_shortcode($attr) { + $post = get_post(); + + static $instance = 0; + $instance++; + + if ( ! empty( $attr['ids'] ) ) { + // 'ids' is explicitly ordered, unless you specify otherwise. + if ( empty( $attr['orderby'] ) ) + $attr['orderby'] = 'post__in'; + $attr['include'] = $attr['ids']; + } + + // Allow plugins/themes to override the default gallery template. + $output = apply_filters('post_gallery', '', $attr); + if ( $output != '' ) + return $output; + + // We're trusting author input, so let's at least make sure it looks like a valid orderby statement + if ( isset( $attr['orderby'] ) ) { + $attr['orderby'] = sanitize_sql_orderby( $attr['orderby'] ); + if ( !$attr['orderby'] ) + unset( $attr['orderby'] ); + } + + extract(shortcode_atts(array( + 'order' => 'ASC', + 'orderby' => 'menu_order ID', + 'id' => $post ? $post->ID : 0, + 'itemtag' => 'dl', + 'icontag' => 'dt', + 'captiontag' => 'dd', + 'columns' => 3, + 'size' => 'thumbnail', + 'include' => '', + 'exclude' => '', + 'link' => '' + ), $attr, 'gallery')); + + $id = intval($id); + if ( 'RAND' == $order ) + $orderby = 'none'; + + if ( !empty($include) ) { + $_attachments = get_posts( array('include' => $include, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) ); + + $attachments = array(); + foreach ( $_attachments as $key => $val ) { + $attachments[$val->ID] = $_attachments[$key]; + } + } elseif ( !empty($exclude) ) { + $attachments = get_children( array('post_parent' => $id, 'exclude' => $exclude, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) ); + } else { + $attachments = get_children( array('post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) ); + } + + if ( empty($attachments) ) + return ''; + + if ( is_feed() ) { + $output = "\n"; + foreach ( $attachments as $att_id => $attachment ) + $output .= wp_get_attachment_link($att_id, $size, true) . "\n"; + return $output; + } + + $itemtag = tag_escape($itemtag); + $captiontag = tag_escape($captiontag); + $icontag = tag_escape($icontag); + $valid_tags = wp_kses_allowed_html( 'post' ); + if ( ! isset( $valid_tags[ $itemtag ] ) ) + $itemtag = 'dl'; + if ( ! isset( $valid_tags[ $captiontag ] ) ) + $captiontag = 'dd'; + if ( ! isset( $valid_tags[ $icontag ] ) ) + $icontag = 'dt'; + + $columns = intval($columns); + $itemwidth = $columns > 0 ? floor(100/$columns) : 100; + $float = is_rtl() ? 'right' : 'left'; + + $selector = "gallery-{$instance}"; + + $gallery_style = $gallery_div = ''; + if ( apply_filters( 'use_default_gallery_style', true ) ) + $gallery_style = " + "; + $size_class = sanitize_html_class( $size ); + $gallery_div = "\n"; + + return $output; +} + +/** + * Provide a No-JS Flash fallback as a last resort for audio / video + * + * @since 3.6.0 + * + * @param string $url + * @return string Fallback HTML + */ +function wp_mediaelement_fallback( $url ) { + return apply_filters( 'wp_mediaelement_fallback', sprintf( '%1$s', esc_url( $url ) ), $url ); +} + +/** + * Return a filtered list of WP-supported audio formats + * + * @since 3.6.0 + * @return array + */ +function wp_get_audio_extensions() { + return apply_filters( 'wp_audio_extensions', array( 'mp3', 'ogg', 'wma', 'm4a', 'wav' ) ); +} + +/** + * The Audio shortcode. + * + * This implements the functionality of the Audio Shortcode for displaying + * WordPress mp3s in a post. + * + * @since 3.6.0 + * + * @param array $attr Attributes of the shortcode. + * @param string $content Optional. Shortcode content. + * @return string HTML content to display audio. + */ +function wp_audio_shortcode( $attr, $content = '' ) { + $post_id = get_post() ? get_the_ID() : 0; + + static $instances = 0; + $instances++; + + /** + * Override the default audio shortcode. + * + * @since 3.7.0 + * + * @param null Empty variable to be replaced with shortcode markup. + * @param array $attr Attributes of the shortcode. + * @param string $content Shortcode content. + * @param int $instances Unique numeric ID of this audio shortcode instance. + */ + $html = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instances ); + if ( '' !== $html ) + return $html; + + $audio = null; + + $default_types = wp_get_audio_extensions(); + $defaults_atts = array( + 'src' => '', + 'loop' => '', + 'autoplay' => '', + 'preload' => 'none' + ); + foreach ( $default_types as $type ) + $defaults_atts[$type] = ''; + + $atts = shortcode_atts( $defaults_atts, $attr, 'audio' ); + extract( $atts ); + + $primary = false; + if ( ! empty( $src ) ) { + $type = wp_check_filetype( $src, wp_get_mime_types() ); + if ( ! in_array( strtolower( $type['ext'] ), $default_types ) ) + return sprintf( '%s', esc_url( $src ), esc_html( $src ) ); + $primary = true; + array_unshift( $default_types, 'src' ); + } else { + foreach ( $default_types as $ext ) { + if ( ! empty( $$ext ) ) { + $type = wp_check_filetype( $$ext, wp_get_mime_types() ); + if ( strtolower( $type['ext'] ) === $ext ) + $primary = true; + } + } + } + + if ( ! $primary ) { + $audios = get_attached_media( 'audio', $post_id ); + if ( empty( $audios ) ) + return; + + $audio = reset( $audios ); + $src = wp_get_attachment_url( $audio->ID ); + if ( empty( $src ) ) + return; + + array_unshift( $default_types, 'src' ); + } + + $library = apply_filters( 'wp_audio_shortcode_library', 'mediaelement' ); + if ( 'mediaelement' === $library && did_action( 'init' ) ) { + wp_enqueue_style( 'wp-mediaelement' ); + wp_enqueue_script( 'wp-mediaelement' ); + } + + $atts = array( + 'class' => apply_filters( 'wp_audio_shortcode_class', 'wp-audio-shortcode' ), + 'id' => sprintf( 'audio-%d-%d', $post_id, $instances ), + 'loop' => $loop, + 'autoplay' => $autoplay, + 'preload' => $preload, + 'style' => 'width: 100%', + ); + + // These ones should just be omitted altogether if they are blank + foreach ( array( 'loop', 'autoplay', 'preload' ) as $a ) { + if ( empty( $atts[$a] ) ) + unset( $atts[$a] ); + } + + $attr_strings = array(); + foreach ( $atts as $k => $v ) { + $attr_strings[] = $k . '="' . esc_attr( $v ) . '"'; + } + + $html = ''; + if ( 'mediaelement' === $library && 1 === $instances ) + $html .= "\n"; + $html .= sprintf( ''; + + return apply_filters( 'wp_audio_shortcode', $html, $atts, $audio, $post_id, $library ); +} +add_shortcode( 'audio', 'wp_audio_shortcode' ); + +/** + * Return a filtered list of WP-supported video formats + * + * @since 3.6.0 + * @return array + */ +function wp_get_video_extensions() { + return apply_filters( 'wp_video_extensions', array( 'mp4', 'm4v', 'webm', 'ogv', 'wmv', 'flv' ) ); +} + +/** + * The Video shortcode. + * + * This implements the functionality of the Video Shortcode for displaying + * WordPress mp4s in a post. + * + * @since 3.6.0 + * + * @param array $attr Attributes of the shortcode. + * @param string $content Optional. Shortcode content. + * @return string HTML content to display video. + */ +function wp_video_shortcode( $attr, $content = '' ) { + global $content_width; + $post_id = get_post() ? get_the_ID() : 0; + + static $instances = 0; + $instances++; + + /** + * Override the default video shortcode. + * + * @since 3.7.0 + * + * @param null Empty variable to be replaced with shortcode markup. + * @param array $attr Attributes of the shortcode. + * @param string $content Shortcode content. + * @param int $instances Unique numeric ID of this video shortcode instance. + */ + $html = apply_filters( 'wp_video_shortcode_override', '', $attr, $content, $instances ); + if ( '' !== $html ) + return $html; + + $video = null; + + $default_types = wp_get_video_extensions(); + $defaults_atts = array( + 'src' => '', + 'poster' => '', + 'loop' => '', + 'autoplay' => '', + 'preload' => 'metadata', + 'height' => 360, + 'width' => empty( $content_width ) ? 640 : $content_width, + ); + + foreach ( $default_types as $type ) + $defaults_atts[$type] = ''; + + $atts = shortcode_atts( $defaults_atts, $attr, 'video' ); + extract( $atts ); + + $w = $width; + $h = $height; + if ( is_admin() && $width > 600 ) + $w = 600; + elseif ( ! is_admin() && $w > $defaults_atts['width'] ) + $w = $defaults_atts['width']; + + if ( $w < $width ) + $height = round( ( $h * $w ) / $width ); + + $width = $w; + + $primary = false; + if ( ! empty( $src ) ) { + $type = wp_check_filetype( $src, wp_get_mime_types() ); + if ( ! in_array( strtolower( $type['ext'] ), $default_types ) ) + return sprintf( '%s', esc_url( $src ), esc_html( $src ) ); + $primary = true; + array_unshift( $default_types, 'src' ); + } else { + foreach ( $default_types as $ext ) { + if ( ! empty( $$ext ) ) { + $type = wp_check_filetype( $$ext, wp_get_mime_types() ); + if ( strtolower( $type['ext'] ) === $ext ) + $primary = true; + } + } + } + + if ( ! $primary ) { + $videos = get_attached_media( 'video', $post_id ); + if ( empty( $videos ) ) + return; + + $video = reset( $videos ); + $src = wp_get_attachment_url( $video->ID ); + if ( empty( $src ) ) + return; + + array_unshift( $default_types, 'src' ); + } + + $library = apply_filters( 'wp_video_shortcode_library', 'mediaelement' ); + if ( 'mediaelement' === $library && did_action( 'init' ) ) { + wp_enqueue_style( 'wp-mediaelement' ); + wp_enqueue_script( 'wp-mediaelement' ); + } + + $atts = array( + 'class' => apply_filters( 'wp_video_shortcode_class', 'wp-video-shortcode' ), + 'id' => sprintf( 'video-%d-%d', $post_id, $instances ), + 'width' => absint( $width ), + 'height' => absint( $height ), + 'poster' => esc_url( $poster ), + 'loop' => $loop, + 'autoplay' => $autoplay, + 'preload' => $preload, + ); + + // These ones should just be omitted altogether if they are blank + foreach ( array( 'poster', 'loop', 'autoplay', 'preload' ) as $a ) { + if ( empty( $atts[$a] ) ) + unset( $atts[$a] ); + } + + $attr_strings = array(); + foreach ( $atts as $k => $v ) { + $attr_strings[] = $k . '="' . esc_attr( $v ) . '"'; + } + + $html = ''; + if ( 'mediaelement' === $library && 1 === $instances ) + $html .= "\n"; + $html .= sprintf( ''; + + $html = sprintf( '
%s
', $width, $html ); + return apply_filters( 'wp_video_shortcode', $html, $atts, $video, $post_id, $library ); +} +add_shortcode( 'video', 'wp_video_shortcode' ); + +/** + * Display previous image link that has the same post parent. + * + * @since 2.5.0 + * @param string $size Optional, default is 'thumbnail'. Size of image, either array or string. 0 or 'none' will default to post_title or $text; + * @param string $text Optional, default is false. If included, link will reflect $text variable. + * @return string HTML content. + */ +function previous_image_link($size = 'thumbnail', $text = false) { + adjacent_image_link(true, $size, $text); +} + +/** + * Display next image link that has the same post parent. + * + * @since 2.5.0 + * @param string $size Optional, default is 'thumbnail'. Size of image, either array or string. 0 or 'none' will default to post_title or $text; + * @param string $text Optional, default is false. If included, link will reflect $text variable. + * @return string HTML content. + */ +function next_image_link($size = 'thumbnail', $text = false) { + adjacent_image_link(false, $size, $text); +} + +/** + * Display next or previous image link that has the same post parent. + * + * Retrieves the current attachment object from the $post global. + * + * @since 2.5.0 + * + * @param bool $prev Optional. Default is true to display previous link, false for next. + */ +function adjacent_image_link($prev = true, $size = 'thumbnail', $text = false) { + $post = get_post(); + $attachments = array_values( get_children( array( 'post_parent' => $post->post_parent, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID' ) ) ); + + foreach ( $attachments as $k => $attachment ) + if ( $attachment->ID == $post->ID ) + break; + + $k = $prev ? $k - 1 : $k + 1; + + $output = $attachment_id = null; + if ( isset( $attachments[ $k ] ) ) { + $attachment_id = $attachments[ $k ]->ID; + $output = wp_get_attachment_link( $attachment_id, $size, true, false, $text ); + } + + $adjacent = $prev ? 'previous' : 'next'; + echo apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text ); +} + +/** + * Retrieve taxonomies attached to the attachment. + * + * @since 2.5.0 + * + * @param int|array|object $attachment Attachment ID, Attachment data array, or Attachment data object. + * @return array Empty array on failure. List of taxonomies on success. + */ +function get_attachment_taxonomies($attachment) { + if ( is_int( $attachment ) ) + $attachment = get_post($attachment); + else if ( is_array($attachment) ) + $attachment = (object) $attachment; + + if ( ! is_object($attachment) ) + return array(); + + $filename = basename($attachment->guid); + + $objects = array('attachment'); + + if ( false !== strpos($filename, '.') ) + $objects[] = 'attachment:' . substr($filename, strrpos($filename, '.') + 1); + if ( !empty($attachment->post_mime_type) ) { + $objects[] = 'attachment:' . $attachment->post_mime_type; + if ( false !== strpos($attachment->post_mime_type, '/') ) + foreach ( explode('/', $attachment->post_mime_type) as $token ) + if ( !empty($token) ) + $objects[] = "attachment:$token"; + } + + $taxonomies = array(); + foreach ( $objects as $object ) + if ( $taxes = get_object_taxonomies($object) ) + $taxonomies = array_merge($taxonomies, $taxes); + + return array_unique($taxonomies); +} + +/** + * Return all of the taxonomy names that are registered for attachments. + * + * Handles mime-type-specific taxonomies such as attachment:image and attachment:video. + * + * @since 3.5.0 + * @see get_attachment_taxonomies() + * @uses get_taxonomies() + * + * @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_taxonomies_for_attachments( $output = 'names' ) { + $taxonomies = array(); + foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy ) { + foreach ( $taxonomy->object_type as $object_type ) { + if ( 'attachment' == $object_type || 0 === strpos( $object_type, 'attachment:' ) ) { + if ( 'names' == $output ) + $taxonomies[] = $taxonomy->name; + else + $taxonomies[ $taxonomy->name ] = $taxonomy; + break; + } + } + } + + return $taxonomies; +} + +/** + * Create new GD image resource with transparency support + * @TODO: Deprecate if possible. + * + * @since 2.9.0 + * + * @param int $width Image width + * @param int $height Image height + * @return image resource + */ +function wp_imagecreatetruecolor($width, $height) { + $img = imagecreatetruecolor($width, $height); + if ( is_resource($img) && function_exists('imagealphablending') && function_exists('imagesavealpha') ) { + imagealphablending($img, false); + imagesavealpha($img, true); + } + return $img; +} + +/** + * Register an embed handler. This function should probably only be used for sites that do not support oEmbed. + * + * @since 2.9.0 + * @see WP_Embed::register_handler() + */ +function wp_embed_register_handler( $id, $regex, $callback, $priority = 10 ) { + global $wp_embed; + $wp_embed->register_handler( $id, $regex, $callback, $priority ); +} + +/** + * Unregister a previously registered embed handler. + * + * @since 2.9.0 + * @see WP_Embed::unregister_handler() + */ +function wp_embed_unregister_handler( $id, $priority = 10 ) { + global $wp_embed; + $wp_embed->unregister_handler( $id, $priority ); +} + +/** + * Create default array of embed parameters. + * + * The width defaults to the content width as specified by the theme. If the + * theme does not specify a content width, then 500px is used. + * + * The default height is 1.5 times the width, or 1000px, whichever is smaller. + * + * The 'embed_defaults' filter can be used to adjust either of these values. + * + * @since 2.9.0 + * + * @return array Default embed parameters. + */ +function wp_embed_defaults() { + if ( ! empty( $GLOBALS['content_width'] ) ) + $width = (int) $GLOBALS['content_width']; + + if ( empty( $width ) ) + $width = 500; + + $height = min( ceil( $width * 1.5 ), 1000 ); + + return apply_filters( 'embed_defaults', compact( 'width', 'height' ) ); +} + +/** + * Based on a supplied width/height example, return the biggest possible dimensions based on the max width/height. + * + * @since 2.9.0 + * @uses wp_constrain_dimensions() This function passes the widths and the heights. + * + * @param int $example_width The width of an example embed. + * @param int $example_height The height of an example embed. + * @param int $max_width The maximum allowed width. + * @param int $max_height The maximum allowed height. + * @return array The maximum possible width and height based on the example ratio. + */ +function wp_expand_dimensions( $example_width, $example_height, $max_width, $max_height ) { + $example_width = (int) $example_width; + $example_height = (int) $example_height; + $max_width = (int) $max_width; + $max_height = (int) $max_height; + + return wp_constrain_dimensions( $example_width * 1000000, $example_height * 1000000, $max_width, $max_height ); +} + +/** + * Attempts to fetch the embed HTML for a provided URL using oEmbed. + * + * @since 2.9.0 + * @see WP_oEmbed + * + * @uses _wp_oembed_get_object() + * @uses WP_oEmbed::get_html() + * + * @param string $url The URL that should be embedded. + * @param array $args Additional arguments and parameters. + * @return bool|string False on failure or the embed HTML on success. + */ +function wp_oembed_get( $url, $args = '' ) { + require_once( ABSPATH . WPINC . '/class-oembed.php' ); + $oembed = _wp_oembed_get_object(); + return $oembed->get_html( $url, $args ); +} + +/** + * Adds a URL format and oEmbed provider URL pair. + * + * @since 2.9.0 + * @see WP_oEmbed + * + * @uses _wp_oembed_get_object() + * + * @param string $format The format of URL that this provider can handle. You can use asterisks as wildcards. + * @param string $provider The URL to the oEmbed provider. + * @param boolean $regex Whether the $format parameter is in a regex format. + */ +function wp_oembed_add_provider( $format, $provider, $regex = false ) { + require_once( ABSPATH . WPINC . '/class-oembed.php' ); + $oembed = _wp_oembed_get_object(); + $oembed->providers[$format] = array( $provider, $regex ); +} + +/** + * Removes an oEmbed provider. + * + * @since 3.5.0 + * @see WP_oEmbed + * + * @uses _wp_oembed_get_object() + * + * @param string $format The URL format for the oEmbed provider to remove. + */ +function wp_oembed_remove_provider( $format ) { + require_once( ABSPATH . WPINC . '/class-oembed.php' ); + + $oembed = _wp_oembed_get_object(); + + if ( isset( $oembed->providers[ $format ] ) ) { + unset( $oembed->providers[ $format ] ); + return true; + } + + return false; +} + +/** + * Determines if default embed handlers should be loaded. + * + * Checks to make sure that the embeds library hasn't already been loaded. If + * it hasn't, then it will load the embeds library. + * + * @since 2.9.0 + */ +function wp_maybe_load_embeds() { + if ( ! apply_filters( 'load_default_embeds', true ) ) + return; + wp_embed_register_handler( 'googlevideo', '#http://video\.google\.([A-Za-z.]{2,5})/videoplay\?docid=([\d-]+)(.*?)#i', 'wp_embed_handler_googlevideo' ); + wp_embed_register_handler( 'audio', '#^https?://.+?\.(' . join( '|', wp_get_audio_extensions() ) . ')$#i', apply_filters( 'wp_audio_embed_handler', 'wp_embed_handler_audio' ), 9999 ); + wp_embed_register_handler( 'video', '#^https?://.+?\.(' . join( '|', wp_get_video_extensions() ) . ')$#i', apply_filters( 'wp_video_embed_handler', 'wp_embed_handler_video' ), 9999 ); +} + +/** + * The Google Video embed handler callback. Google Video does not support oEmbed. + * + * @see WP_Embed::register_handler() + * @see WP_Embed::shortcode() + * + * @param array $matches The regex matches from the provided regex when calling {@link wp_embed_register_handler()}. + * @param array $attr Embed attributes. + * @param string $url The original URL that was matched by the regex. + * @param array $rawattr The original unmodified attributes. + * @return string The embed HTML. + */ +function wp_embed_handler_googlevideo( $matches, $attr, $url, $rawattr ) { + // If the user supplied a fixed width AND height, use it + if ( !empty($rawattr['width']) && !empty($rawattr['height']) ) { + $width = (int) $rawattr['width']; + $height = (int) $rawattr['height']; + } else { + list( $width, $height ) = wp_expand_dimensions( 425, 344, $attr['width'], $attr['height'] ); + } + + return apply_filters( 'embed_googlevideo', '', $matches, $attr, $url, $rawattr ); +} + +/** + * Audio embed handler callback. + * + * @since 3.6.0 + * + * @param array $matches The regex matches from the provided regex when calling {@link wp_embed_register_handler()}. + * @param array $attr Embed attributes. + * @param string $url The original URL that was matched by the regex. + * @param array $rawattr The original unmodified attributes. + * @return string The embed HTML. + */ +function wp_embed_handler_audio( $matches, $attr, $url, $rawattr ) { + $audio = sprintf( '[audio src="%s" /]', esc_url( $url ) ); + return apply_filters( 'wp_embed_handler_audio', $audio, $attr, $url, $rawattr ); +} + +/** + * Video embed handler callback. + * + * @since 3.6.0 + * + * @param array $matches The regex matches from the provided regex when calling {@link wp_embed_register_handler()}. + * @param array $attr Embed attributes. + * @param string $url The original URL that was matched by the regex. + * @param array $rawattr The original unmodified attributes. + * @return string The embed HTML. + */ +function wp_embed_handler_video( $matches, $attr, $url, $rawattr ) { + $dimensions = ''; + if ( ! empty( $rawattr['width'] ) && ! empty( $rawattr['height'] ) ) { + $dimensions .= sprintf( 'width="%d" ', (int) $rawattr['width'] ); + $dimensions .= sprintf( 'height="%d" ', (int) $rawattr['height'] ); + } + $video = sprintf( '[video %s src="%s" /]', $dimensions, esc_url( $url ) ); + return apply_filters( 'wp_embed_handler_video', $video, $attr, $url, $rawattr ); +} + +/** + * Converts a shorthand byte value to an integer byte value. + * + * @since 2.3.0 + * + * @param string $size A shorthand byte value. + * @return int An integer byte value. + */ +function wp_convert_hr_to_bytes( $size ) { + $size = strtolower( $size ); + $bytes = (int) $size; + if ( strpos( $size, 'k' ) !== false ) + $bytes = intval( $size ) * 1024; + elseif ( strpos( $size, 'm' ) !== false ) + $bytes = intval($size) * 1024 * 1024; + elseif ( strpos( $size, 'g' ) !== false ) + $bytes = intval( $size ) * 1024 * 1024 * 1024; + return $bytes; +} + +/** + * Determine the maximum upload size allowed in php.ini. + * + * @since 2.5.0 + * + * @return int Allowed upload size. + */ +function wp_max_upload_size() { + $u_bytes = wp_convert_hr_to_bytes( ini_get( 'upload_max_filesize' ) ); + $p_bytes = wp_convert_hr_to_bytes( ini_get( 'post_max_size' ) ); + $bytes = apply_filters( 'upload_size_limit', min( $u_bytes, $p_bytes ), $u_bytes, $p_bytes ); + return $bytes; +} + +/** + * Returns a WP_Image_Editor instance and loads file into it. + * + * @since 3.5.0 + * @access public + * + * @param string $path Path to file to load + * @param array $args Additional data. Accepts { 'mime_type'=>string, 'methods'=>{string, string, ...} } + * @return WP_Image_Editor|WP_Error + */ +function wp_get_image_editor( $path, $args = array() ) { + $args['path'] = $path; + + if ( ! isset( $args['mime_type'] ) ) { + $file_info = wp_check_filetype( $args['path'] ); + + // If $file_info['type'] is false, then we let the editor attempt to + // figure out the file type, rather than forcing a failure based on extension. + if ( isset( $file_info ) && $file_info['type'] ) + $args['mime_type'] = $file_info['type']; + } + + $implementation = _wp_image_editor_choose( $args ); + + if ( $implementation ) { + $editor = new $implementation( $path ); + $loaded = $editor->load(); + + if ( is_wp_error( $loaded ) ) + return $loaded; + + return $editor; + } + + return new WP_Error( 'image_no_editor', __('No editor could be selected.') ); +} + +/** + * Tests whether there is an editor that supports a given mime type or methods. + * + * @since 3.5.0 + * @access public + * + * @param string|array $args Array of requirements. Accepts { 'mime_type'=>string, 'methods'=>{string, string, ...} } + * @return boolean true if an eligible editor is found; false otherwise + */ +function wp_image_editor_supports( $args = array() ) { + return (bool) _wp_image_editor_choose( $args ); +} + +/** + * Tests which editors are capable of supporting the request. + * + * @since 3.5.0 + * @access private + * + * @param array $args Additional data. Accepts { 'mime_type'=>string, 'methods'=>{string, string, ...} } + * @return string|bool Class name for the first editor that claims to support the request. False if no editor claims to support the request. + */ +function _wp_image_editor_choose( $args = array() ) { + require_once ABSPATH . WPINC . '/class-wp-image-editor.php'; + require_once ABSPATH . WPINC . '/class-wp-image-editor-gd.php'; + require_once ABSPATH . WPINC . '/class-wp-image-editor-imagick.php'; + + $implementations = apply_filters( 'wp_image_editors', + array( 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD' ) ); + + foreach ( $implementations as $implementation ) { + if ( ! call_user_func( array( $implementation, 'test' ), $args ) ) + continue; + + if ( isset( $args['mime_type'] ) && + ! call_user_func( + array( $implementation, 'supports_mime_type' ), + $args['mime_type'] ) ) { + continue; + } + + if ( isset( $args['methods'] ) && + array_diff( $args['methods'], get_class_methods( $implementation ) ) ) { + continue; + } + + return $implementation; + } + + return false; +} + +/** + * Prints default plupload arguments. + * + * @since 3.4.0 + */ +function wp_plupload_default_settings() { + global $wp_scripts; + + $data = $wp_scripts->get_data( 'wp-plupload', 'data' ); + if ( $data && false !== strpos( $data, '_wpPluploadSettings' ) ) + return; + + $max_upload_size = wp_max_upload_size(); + + $defaults = array( + 'runtimes' => 'html5,silverlight,flash,html4', + 'file_data_name' => 'async-upload', // key passed to $_FILE. + 'multiple_queues' => true, + 'max_file_size' => $max_upload_size . 'b', + 'url' => admin_url( 'async-upload.php', 'relative' ), + 'flash_swf_url' => includes_url( 'js/plupload/plupload.flash.swf' ), + 'silverlight_xap_url' => includes_url( 'js/plupload/plupload.silverlight.xap' ), + 'filters' => array( array( 'title' => __( 'Allowed Files' ), 'extensions' => '*') ), + 'multipart' => true, + 'urlstream_upload' => true, + ); + + // Multi-file uploading doesn't currently work in iOS Safari, + // single-file allows the built-in camera to be used as source for images + if ( wp_is_mobile() ) + $defaults['multi_selection'] = false; + + $defaults = apply_filters( 'plupload_default_settings', $defaults ); + + $params = array( + 'action' => 'upload-attachment', + ); + + $params = apply_filters( 'plupload_default_params', $params ); + $params['_wpnonce'] = wp_create_nonce( 'media-form' ); + $defaults['multipart_params'] = $params; + + $settings = array( + 'defaults' => $defaults, + 'browser' => array( + 'mobile' => wp_is_mobile(), + 'supported' => _device_can_upload(), + ), + 'limitExceeded' => is_multisite() && ! is_upload_space_available() + ); + + $script = 'var _wpPluploadSettings = ' . json_encode( $settings ) . ';'; + + if ( $data ) + $script = "$data\n$script"; + + $wp_scripts->add_data( 'wp-plupload', 'data', $script ); +} +add_action( 'customize_controls_enqueue_scripts', 'wp_plupload_default_settings' ); + +/** + * Prepares an attachment post object for JS, where it is expected + * to be JSON-encoded and fit into an Attachment model. + * + * @since 3.5.0 + * + * @param mixed $attachment Attachment ID or object. + * @return array Array of attachment details. + */ +function wp_prepare_attachment_for_js( $attachment ) { + if ( ! $attachment = get_post( $attachment ) ) + return; + + if ( 'attachment' != $attachment->post_type ) + return; + + $meta = wp_get_attachment_metadata( $attachment->ID ); + if ( false !== strpos( $attachment->post_mime_type, '/' ) ) + list( $type, $subtype ) = explode( '/', $attachment->post_mime_type ); + else + list( $type, $subtype ) = array( $attachment->post_mime_type, '' ); + + $attachment_url = wp_get_attachment_url( $attachment->ID ); + + $response = array( + 'id' => $attachment->ID, + 'title' => $attachment->post_title, + 'filename' => wp_basename( $attachment->guid ), + 'url' => $attachment_url, + 'link' => get_attachment_link( $attachment->ID ), + 'alt' => get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ), + 'author' => $attachment->post_author, + 'description' => $attachment->post_content, + 'caption' => $attachment->post_excerpt, + 'name' => $attachment->post_name, + 'status' => $attachment->post_status, + 'uploadedTo' => $attachment->post_parent, + 'date' => strtotime( $attachment->post_date_gmt ) * 1000, + 'modified' => strtotime( $attachment->post_modified_gmt ) * 1000, + 'menuOrder' => $attachment->menu_order, + 'mime' => $attachment->post_mime_type, + 'type' => $type, + 'subtype' => $subtype, + 'icon' => wp_mime_type_icon( $attachment->ID ), + 'dateFormatted' => mysql2date( get_option('date_format'), $attachment->post_date ), + 'nonces' => array( + 'update' => false, + 'delete' => false, + ), + 'editLink' => false, + ); + + if ( current_user_can( 'edit_post', $attachment->ID ) ) { + $response['nonces']['update'] = wp_create_nonce( 'update-post_' . $attachment->ID ); + $response['editLink'] = get_edit_post_link( $attachment->ID, 'raw' ); + } + + if ( current_user_can( 'delete_post', $attachment->ID ) ) + $response['nonces']['delete'] = wp_create_nonce( 'delete-post_' . $attachment->ID ); + + if ( $meta && 'image' === $type ) { + $sizes = array(); + /** This filter is documented in wp-admin/includes/media.php */ + $possible_sizes = apply_filters( 'image_size_names_choose', array( + 'thumbnail' => __('Thumbnail'), + 'medium' => __('Medium'), + 'large' => __('Large'), + 'full' => __('Full Size'), + ) ); + unset( $possible_sizes['full'] ); + + // Loop through all potential sizes that may be chosen. Try to do this with some efficiency. + // First: run the image_downsize filter. If it returns something, we can use its data. + // If the filter does not return something, then image_downsize() is just an expensive + // way to check the image metadata, which we do second. + foreach ( $possible_sizes as $size => $label ) { + if ( $downsize = apply_filters( 'image_downsize', false, $attachment->ID, $size ) ) { + if ( ! $downsize[3] ) + continue; + $sizes[ $size ] = array( + 'height' => $downsize[2], + 'width' => $downsize[1], + 'url' => $downsize[0], + 'orientation' => $downsize[2] > $downsize[1] ? 'portrait' : 'landscape', + ); + } elseif ( isset( $meta['sizes'][ $size ] ) ) { + if ( ! isset( $base_url ) ) + $base_url = str_replace( wp_basename( $attachment_url ), '', $attachment_url ); + + // Nothing from the filter, so consult image metadata if we have it. + $size_meta = $meta['sizes'][ $size ]; + + // We have the actual image size, but might need to further constrain it if content_width is narrower. + // Thumbnail, medium, and full sizes are also checked against the site's height/width options. + list( $width, $height ) = image_constrain_size_for_editor( $size_meta['width'], $size_meta['height'], $size, 'edit' ); + + $sizes[ $size ] = array( + 'height' => $height, + 'width' => $width, + 'url' => $base_url . $size_meta['file'], + 'orientation' => $height > $width ? 'portrait' : 'landscape', + ); + } + } + + $sizes['full'] = array( 'url' => $attachment_url ); + + if ( isset( $meta['height'], $meta['width'] ) ) { + $sizes['full']['height'] = $meta['height']; + $sizes['full']['width'] = $meta['width']; + $sizes['full']['orientation'] = $meta['height'] > $meta['width'] ? 'portrait' : 'landscape'; + } + + $response = array_merge( $response, array( 'sizes' => $sizes ), $sizes['full'] ); + } elseif ( $meta && 'video' === $type ) { + if ( isset( $meta['width'] ) ) + $response['width'] = (int) $meta['width']; + if ( isset( $meta['height'] ) ) + $response['height'] = (int) $meta['height']; + } + + if ( $meta && ( 'audio' === $type || 'video' === $type ) ) { + if ( isset( $meta['length_formatted'] ) ) + $response['fileLength'] = $meta['length_formatted']; + } + + if ( function_exists('get_compat_media_markup') ) + $response['compat'] = get_compat_media_markup( $attachment->ID, array( 'in_modal' => true ) ); + + return apply_filters( 'wp_prepare_attachment_for_js', $response, $attachment, $meta ); +} + +/** + * Enqueues all scripts, styles, settings, and templates necessary to use + * all media JS APIs. + * + * @since 3.5.0 + */ +function wp_enqueue_media( $args = array() ) { + + // Enqueue me just once per page, please. + if ( did_action( 'wp_enqueue_media' ) ) + return; + + $defaults = array( + 'post' => null, + ); + $args = wp_parse_args( $args, $defaults ); + + // We're going to pass the old thickbox media tabs to `media_upload_tabs` + // to ensure plugins will work. We will then unset those tabs. + $tabs = array( + // handler action suffix => tab label + 'type' => '', + 'type_url' => '', + 'gallery' => '', + 'library' => '', + ); + + $tabs = apply_filters( 'media_upload_tabs', $tabs ); + unset( $tabs['type'], $tabs['type_url'], $tabs['gallery'], $tabs['library'] ); + + $props = array( + 'link' => get_option( 'image_default_link_type' ), // db default is 'file' + 'align' => get_option( 'image_default_align' ), // empty default + 'size' => get_option( 'image_default_size' ), // empty default + ); + + $settings = array( + 'tabs' => $tabs, + 'tabUrl' => add_query_arg( array( 'chromeless' => true ), admin_url('media-upload.php') ), + 'mimeTypes' => wp_list_pluck( get_post_mime_types(), 0 ), + 'captions' => ! apply_filters( 'disable_captions', '' ), + 'nonce' => array( + 'sendToEditor' => wp_create_nonce( 'media-send-to-editor' ), + ), + 'post' => array( + 'id' => 0, + ), + 'defaultProps' => $props, + 'embedExts' => array_merge( wp_get_audio_extensions(), wp_get_video_extensions() ), + ); + + $post = null; + if ( isset( $args['post'] ) ) { + $post = get_post( $args['post'] ); + $settings['post'] = array( + 'id' => $post->ID, + 'nonce' => wp_create_nonce( 'update-post_' . $post->ID ), + ); + + if ( current_theme_supports( 'post-thumbnails', $post->post_type ) && post_type_supports( $post->post_type, 'thumbnail' ) ) { + $featured_image_id = get_post_meta( $post->ID, '_thumbnail_id', true ); + $settings['post']['featuredImageId'] = $featured_image_id ? $featured_image_id : -1; + } + } + + $hier = $post && is_post_type_hierarchical( $post->post_type ); + + $strings = array( + // Generic + 'url' => __( 'URL' ), + 'addMedia' => __( 'Add Media' ), + 'search' => __( 'Search' ), + 'select' => __( 'Select' ), + 'cancel' => __( 'Cancel' ), + /* translators: This is a would-be plural string used in the media manager. + If there is not a word you can use in your language to avoid issues with the + lack of plural support here, turn it into "selected: %d" then translate it. + */ + 'selected' => __( '%d selected' ), + 'dragInfo' => __( 'Drag and drop to reorder images.' ), + + // Upload + 'uploadFilesTitle' => __( 'Upload Files' ), + 'uploadImagesTitle' => __( 'Upload Images' ), + + // Library + 'mediaLibraryTitle' => __( 'Media Library' ), + 'insertMediaTitle' => __( 'Insert Media' ), + 'createNewGallery' => __( 'Create a new gallery' ), + 'returnToLibrary' => __( '← Return to library' ), + 'allMediaItems' => __( 'All media items' ), + 'noItemsFound' => __( 'No items found.' ), + 'insertIntoPost' => $hier ? __( 'Insert into page' ) : __( 'Insert into post' ), + 'uploadedToThisPost' => $hier ? __( 'Uploaded to this page' ) : __( 'Uploaded to this post' ), + 'warnDelete' => __( "You are about to permanently delete this item.\n 'Cancel' to stop, 'OK' to delete." ), + + // From URL + 'insertFromUrlTitle' => __( 'Insert from URL' ), + + // Featured Images + 'setFeaturedImageTitle' => __( 'Set Featured Image' ), + 'setFeaturedImage' => __( 'Set featured image' ), + + // Gallery + 'createGalleryTitle' => __( 'Create Gallery' ), + 'editGalleryTitle' => __( 'Edit Gallery' ), + 'cancelGalleryTitle' => __( '← Cancel Gallery' ), + 'insertGallery' => __( 'Insert gallery' ), + 'updateGallery' => __( 'Update gallery' ), + 'addToGallery' => __( 'Add to gallery' ), + 'addToGalleryTitle' => __( 'Add to Gallery' ), + 'reverseOrder' => __( 'Reverse order' ), + ); + + $settings = apply_filters( 'media_view_settings', $settings, $post ); + $strings = apply_filters( 'media_view_strings', $strings, $post ); + + $strings['settings'] = $settings; + + wp_localize_script( 'media-views', '_wpMediaViewsL10n', $strings ); + + wp_enqueue_script( 'media-editor' ); + wp_enqueue_style( 'media-views' ); + wp_plupload_default_settings(); + + require_once ABSPATH . WPINC . '/media-template.php'; + add_action( 'admin_footer', 'wp_print_media_templates' ); + add_action( 'wp_footer', 'wp_print_media_templates' ); + + do_action( 'wp_enqueue_media' ); +} + +/** + * Retrieve media attached to the passed post + * + * @since 3.6.0 + * + * @param string $type (Mime) type of media desired + * @param mixed $post Post ID or object + * @return array Found attachments + */ +function get_attached_media( $type, $post = 0 ) { + if ( ! $post = get_post( $post ) ) + return array(); + + $args = array( + 'post_parent' => $post->ID, + 'post_type' => 'attachment', + 'post_mime_type' => $type, + 'posts_per_page' => -1, + 'orderby' => 'menu_order', + 'order' => 'ASC', + ); + + $args = apply_filters( 'get_attached_media_args', $args, $type, $post ); + + $children = get_children( $args ); + + return (array) apply_filters( 'get_attached_media', $children, $type, $post ); +} + +/** + * Check the content blob for an