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<?php
namespace Barn2\Plugin\Document_Library_Pro\Grid;
use Barn2\Plugin\Document_Library_Pro\Posts_Table_Pro\Table_Args;
/**
* Handles the HTML for grid pagination
*
* @package Barn2\document-library-pro
* @author Barn2 Plugins <support@barn2.com>
* @license GPL-3.0
* @copyright Barn2 Media Ltd
*/
class Grid_Pagination {
public $query;
public $args;
protected $max_num_pages;
protected $current_page;
protected $paging_type;
/**
* Constructor.
*
* @param Grid_Query $query
* @param Table_Args $args
*/
public function __construct( Grid_Query $query, Table_Args $args ) {
$this->query = $query;
$this->args = $args;
$this->max_num_pages = $this->query->get_max_num_pages();
$this->current_page = $this->query->get_current_page();
$this->paging_type = $this->args->get_args()['paging_type'];
}
/**
* Retrieves the HTML for the pagination.
*
* @return string
*/
public function get_html() {
if ( ! is_numeric( $this->max_num_pages ) ) {
return '<div class="dlp-grid-pagination"></div>';
}
if ( $this->max_num_pages <= 1 ) {
return '<div class="dlp-grid-pagination"></div>';
}
$html = '<div class="dlp-grid-pagination">';
if ( $this->has_first_last_links() ) {
$html .= $this->get_first_link();
}
if ( $this->has_prev_next_links() ) {
$html .= $this->get_prev_link();
}
if ( $this->has_page_number_links() ) {
$html .= $this->get_page_number_links();
}
if ( $this->has_prev_next_links() ) {
$html .= $this->get_next_link();
}
if ( $this->has_first_last_links() ) {
$html .= $this->get_last_link();
}
$html .= '</div>';
return $html;
}
/**
* Checks whether Previous | Next links are enabled
*
* @return bool
*/
protected function has_prev_next_links() {
return in_array( $this->paging_type, [ 'simple', 'simple_numbers', 'full', 'full_numbers' ], true );
}
/**
* Checks whether First | Last links are enabled
*
* @return bool
*/
protected function has_first_last_links() {
return in_array( $this->paging_type, [ 'full', 'full_numbers' ], true );
}
/**
* Checks whether Number links are enabled
*
* @return bool
*/
protected function has_page_number_links() {
return in_array( $this->paging_type, [ 'numbers', 'simple_numbers', 'full_numbers' ], true );
}
/**
* Retrieve the Number links HTML.
*
* @return string
*/
protected function get_page_number_links() {
if ( $this->max_num_pages <= 5 ) {
$page_links = array_fill( 1, $this->max_num_pages, '' );
} elseif ( $this->current_page <= 4 ) {
$page_links = array_fill( 1, 5, '' );
$page_links[6] = 'ellipsis';
$page_links[ $this->max_num_pages ] = '';
} elseif ( $this->current_page > $this->max_num_pages - 4 ) {
$page_links = array_fill( 1, 1, '' );
$page_links[2] = 'ellipsis';
$page_links = $page_links + array_fill( $this->max_num_pages - 4, 5, '' );
} elseif ( $this->current_page > 4 && $this->current_page <= $this->max_num_pages - 4 ) {
$page_links = array_fill( 1, 1, '' );
$page_links[2] = 'ellipsis';
$page_links = $page_links + array_fill( $this->current_page - 1, 3, '' );
$page_links[ $this->max_num_pages - 1 ] = 'ellipsis';
$page_links[ $this->max_num_pages ] = '';
} else {
$page_links = array_fill( 1, $this->max_num_pages, '' );
}
if ( isset( $page_links[ $this->current_page ] ) ) {
$page_links[ $this->current_page ] = 'current';
}
$html = '';
foreach ( $page_links as $index => $class ) {
if ( $class === 'ellipsis' ) {
$html .= '<span class="dlp-grid-paginate-ellipsis">…</span>';
} else {
$html .= sprintf( '<a class="dlp-grid-paginate-button number %1$s" data-page-number="%2$s">%2$s</a>', $class, $index );
}
}
return $html;
}
/**
* Retrieve the Previous link HTML.
*
* @return string
*/
protected function get_prev_link() {
$disabled = $this->current_page === 1 ? 'disabled' : '';
$page_number = max( $this->current_page - 1, 1 );
return sprintf( '<a class="dlp-grid-paginate-button prev %1$s" data-page-number="%2$s">%3$s</a>', $disabled, $page_number, __( 'Previous', 'document-library-pro' ) );
}
/**
* Retrieve the Next link HTML.
*
* @return string
*/
protected function get_next_link() {
$disabled = $this->current_page === $this->max_num_pages ? 'disabled' : '';
$page_number = min( $this->current_page + 1, $this->max_num_pages );
return sprintf( '<a class="dlp-grid-paginate-button next %1$s" data-page-number="%2$s">%3$s</a>', $disabled, $page_number, __( 'Next', 'document-library-pro' ) );
}
/**
* Retrieve the First link HTML.
*
* @return string
*/
protected function get_first_link() {
$disabled = $this->current_page === 1 ? 'disabled' : '';
return sprintf( '<a class="dlp-grid-paginate-button first %1$s" data-page-number="%2$s">%3$s</a>', $disabled, 1, __( 'First', 'document-library-pro' ) );
}
/**
* Retrieve the Last link HTML.
*
* @return string
*/
protected function get_last_link() {
$disabled = $this->current_page === $this->max_num_pages ? 'disabled' : '';
return sprintf( '<a class="dlp-grid-paginate-button last %1$s" data-page-number="%2$s">%3$s</a>', $disabled, $this->max_num_pages, __( 'Last', 'document-library-pro' ) );
}
}