ColumnReplacement.php
2.55 KB
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<?php
namespace ACA\Polylang\Service;
use AC;
use AC\Registerable;
use ACA\Polylang\Column;
class ColumnReplacement implements Registerable
{
/**
* @var AC\ListScreen
*/
private $list_screen;
/**
* @var []
*/
private $polylang_columns;
public function __construct(AC\ListScreen $list_screen)
{
$this->list_screen = $list_screen;
$this->polylang_columns = [];
}
public function register(): void
{
add_filter($this->list_screen->get_heading_hookname(), [$this, 'set_dynamic_columns'], 199);
add_filter($this->list_screen->get_heading_hookname(), [$this, 're_add_dynamic_columns'], 201);
add_filter($this->list_screen->get_heading_hookname(), [$this, 'remove_placeholder_columns'], 202);
}
public function set_dynamic_columns($headings)
{
foreach ($headings as $key => $label) {
if (strpos($key, 'language_') !== false) {
$this->polylang_columns[$key] = $label;
}
}
return $headings;
}
private function get_placeholder_column_key()
{
$columns = $this->get_placeholder_columns();
return empty($columns) ? null : reset($columns);
}
private function get_placeholder_columns()
{
$columns = array_filter($this->list_screen->get_columns(), function ($column) {
return $column instanceof Column\Language;
});
return array_keys($columns);
}
public function remove_placeholder_columns($headings)
{
foreach ($this->get_placeholder_columns() as $key) {
if (array_key_exists($key, $headings)) {
unset($headings[$key]);
}
}
return $headings;
}
public function re_add_dynamic_columns($headings)
{
$replacement_key = $this->get_placeholder_column_key();
return $replacement_key ? $this->replace_placeholder_column($headings, $replacement_key) : $headings;
}
private function replace_placeholder_column($headings, $replacement_key)
{
foreach ($headings as $key => $label) {
if ($replacement_key === $key) {
$index = array_search($replacement_key, array_keys($headings));
$headings = array_slice($headings, 0, $index, true) + $this->polylang_columns + array_slice(
$headings,
$index,
count($headings) - $index,
true
);
}
}
return $headings;
}
}