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understrap/inc/bootstrap-wp-gallery.php

147 lines
3.9 KiB
PHP

<?php
/**
* Based on Roots Sage Gallery: https://github.com/roots/sage/blob/5b9786b8ceecfe717db55666efe5bcf0c9e1801c/lib/gallery.php
*
* @package understrap
*/
// Remove built in shortcode.
remove_shortcode( 'gallery', 'gallery_shortcode' );
/**
* Replaces gallery with custom shortcode.
*
* @param mixed $attr Shortcode parameters.
*
* @return mixed|string|void
*/
function shortcode_gallery( $attr ) {
$post = get_post();
static $instance = 0;
$instance ++;
if ( ! empty( $attr['ids'] ) ) {
if ( empty( $attr['orderby'] ) ) {
$attr['orderby'] = 'post__in';
}
$attr['include'] = $attr['ids'];
}
$output = apply_filters( 'post_gallery', '', $attr );
if ( $output != '' ) {
return $output;
}
if ( isset( $attr['orderby'] ) ) {
$attr['orderby'] = sanitize_sql_orderby( $attr['orderby'] );
if ( ! $attr['orderby'] ) {
unset( $attr['orderby'] );
}
}
extract( shortcode_atts( [
'order' => 'ASC',
'orderby' => 'menu_order ID',
'id' => $post->ID,
'itemtag' => '',
'icontag' => '',
'captiontag' => '',
'columns' => 3,
'size' => 'thumbnail',
'include' => '',
'exclude' => '',
'link' => '',
], $attr ) );
$id = intval( $id );
$columns = ( 12 % $columns == 0 ) ? $columns : 3;
$grid = sprintf( 'col-sm-%1$s col-lg-%1$s', 12 / $columns );
if ( $order === 'RAND' ) {
$orderby = 'none';
}
if ( ! empty( $include ) ) {
$_attachments = get_posts( [
'include' => $include,
'post_status' => 'inherit',
'post_type' => 'attachment',
'post_mime_type' => 'image',
'order' => $order,
'orderby' => $orderby
] );
$attachments = [];
foreach ( $_attachments as $key => $val ) {
$attachments[ $val->ID ] = $_attachments[ $key ];
}
} elseif ( ! empty( $exclude ) ) {
$attachments = get_children( [
'post_parent' => $id,
'exclude' => $exclude,
'post_status' => 'inherit',
'post_type' => 'attachment',
'post_mime_type' => 'image',
'order' => $order,
'orderby' => $orderby
] );
} else {
$attachments = get_children( [
'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;
}
$unique = ( get_query_var( 'page' ) ) ? $instance . '-p' . get_query_var( 'page' ) : $instance;
$output = '<div class="gallery gallery-' . $id . '-' . $unique . '">';
$i = 0;
foreach ( $attachments as $id => $attachment ) {
switch ( $link ) {
case 'file':
$image = wp_get_attachment_link( $id, $size, false, false );
break;
case 'none':
$image = wp_get_attachment_image( $id, $size, false, [ 'class' => 'thumbnail img-thumbnail' ] );
break;
default:
$image = wp_get_attachment_link( $id, $size, true, false );
break;
}
$output .= ( $i % $columns == 0 ) ? '<div class="row gallery-row">' : '';
$output .= '<div class="' . $grid . '">' . $image;
if ( trim( $attachment->post_excerpt ) ) {
$output .= '<div class="caption hidden">' . wptexturize( $attachment->post_excerpt ) . '</div>';
}
$output .= '</div>';
$i ++;
$output .= ( $i % $columns == 0 ) ? '</div>' : '';
}
$output .= ( $i % $columns != 0 ) ? '</div>' : '';
$output .= '</div>';
return $output;
}
add_shortcode( 'gallery', 'shortcode_gallery' );
/**
* Add class="thumbnail img-thumbnail" to attachment items
*
* @param string $html Markup.
*
* @return mixed
*/
function attachment_link_class( $html ) {
$html = str_replace( '<a', '<a class="thumbnail img-thumbnail"', $html );
return $html;
}
add_filter( 'wp_get_attachment_link', 'attachment_link_class', 10, 1 );