main-table.php

<?php

if ( !defined( 'ABSPATH' ) )
	exit;


if ( !class_exists( 'WP_List_Table' ) )
	require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );


class WP_Gallery_To_Photonic_Main_List_Table extends WP_List_Table {

	function get_columns(): array {
		return [
			'title' => 'Title',
			'author' => 'Author',
			'date' => 'Date',
			'shortcode' => 'Shortcode',
		];
	}

	function prepare_items( array $items = [] ): void {
		$columns = $this->get_columns();
		$hidden = [];
		$sortable = [];
		$this->_column_headers = [ $columns, $hidden, $sortable, ];
		$this->items = $items;
	}

	function column_title( WP_Post $post ): string {
		$edit_url = admin_url( 'post.php?post=' . $post->ID . '&action=edit' );
		$view_url = get_the_permalink( $post );
		$actions = [
			'view' => sprintf( '<a href="%s">View</a>', $view_url ),
		];
		if ( array_key_exists( 'tab', $_GET ) && $_GET['tab'] === 'ignored' ) {
			$include_url = admin_url( 'admin.php?action=g2phot_include&id=' . $post->ID );
			$include_url = wp_nonce_url( $include_url, 'g2phot_include_' . $post->ID, 'nonce' );
			$actions['include'] = sprintf( '<a href="%s">Include</a>', $include_url );
		} else {
			$upload_url = admin_url( 'admin.php?page=g2phot&tab=upload&id=' . $post->ID );
			$actions['upload'] = sprintf( '<a href="%s">Upload</a>', $upload_url );
			$exclude_url = admin_url( 'admin.php?action=g2phot_exclude&id=' . $post->ID );
			$exclude_url = wp_nonce_url( $exclude_url, 'g2phot_exclude_' . $post->ID, 'nonce' );
			$actions['exclude'] = sprintf( '<a href="%s">Exclude</a>', $exclude_url );
		}
		ob_start();
?>
<div style="display: flex;">
	<div style="flex-shrink: 0; height: 40px; width: 40px; margin-right: 8px;">
<?php
		echo get_the_post_thumbnail( $post, 'thumbnail', [
			'style' => 'max-height: 100%; height: auto; max-width: 100%; width: auto;',
		] );
?>
	</div>
	<div style="flex-grow: 1;">
		<div><strong><a href="<?= $edit_url ?>"><?= esc_html( $post->post_title ) ?></a></strong></div>
		<div><?= $this->row_actions( $actions ) ?></div>
	</div>
</div>
<?php
		return ob_get_clean();
	}

	function column_date( WP_Post $post ): string {
		return esc_html( $post->post_date );
	}

	function column_author( WP_Post $post ): string {
		return esc_html( get_the_author_meta( 'display_name', $post->post_author ) );
	}

	function column_shortcode( WP_Post $post ): string {
		$regex = get_shortcode_regex( [ 'gallery', ] );
		$m = NULL;
		if ( !has_shortcode( $post->post_content, 'gallery' ) )
			return '-';
		preg_match_all( '/' . $regex . '/s', $post->post_content, $m, PREG_SET_ORDER );
		$ids = [];
		if ( !is_null( $m ) ) {
			foreach ( $m as $mm ) {
				$atts = shortcode_parse_atts( $mm[3] );
				if ( !array_key_exists( 'ids', $atts ) )
					continue;
				$ids[] = count( explode( ',', $atts['ids'] ) );
			}
		}
		if ( empty( $ids ) )
			return '-';
		$html = '';
		if ( count( $ids ) > 1 )
			$html .= '<div>' . implode( ' + ', $ids ) . ' =</div>';
		$html .= '<div><strong>' . array_sum( $ids ) . '</strong></div>';
		return $html;
	}
}