From 31a10322df1a9a5625cc5368c4a7543bd6dc3cb9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pavel=20Konvi=C4=8Dka?= <pavel.konvicka@gmail.com>
Date: Mon, 29 Jun 2026 09:50:58 +0200
Subject: [PATCH] =?UTF-8?q?feat:=20v=C3=BDchoz=C3=AD=20blokov=C4=9B=20zaro?=
 =?UTF-8?q?vnan=C3=A9=20okno=20str=C3=A1nek=20v=20paginatoru?=
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---
 src/Component/DataGridPaginator.php | 35 +++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/src/Component/DataGridPaginator.php b/src/Component/DataGridPaginator.php
index eaa54d1..77c7cc1 100644
--- a/src/Component/DataGridPaginator.php
+++ b/src/Component/DataGridPaginator.php
@@ -5,14 +5,49 @@
 namespace ADT\Datagrid\Component;
 
 use Nette;
+use Nette\Utils\Paginator;
 
 /**
  * @property-read Nette\Application\UI\ITemplate $template
  */
 class DataGridPaginator extends \Contributte\Datagrid\Components\DatagridPaginator\DatagridPaginator
 {
+	private const int WINDOW_SIZE = 6;
+
 	public function getTemplateFile(): string
 	{
 		return __DIR__ . '/DataGridPaginator.latte';
 	}
+
+	public function render(): void
+	{
+		$this->getTemplate()->steps = $this->computeWindowSteps($this->getPaginator());
+		parent::render();
+	}
+
+	/**
+	 * @return int[]
+	 */
+	private function computeWindowSteps(Paginator $paginator): array
+	{
+		if ($paginator->pageCount < 2) {
+			return [$paginator->page];
+		}
+
+		$first = $paginator->firstPage;
+		$last = $paginator->lastPage;
+
+		$blockIndex = intdiv($paginator->page - $first, self::WINDOW_SIZE);
+		$start = $first + $blockIndex * self::WINDOW_SIZE;
+		$end = min($last, $start + self::WINDOW_SIZE - 1);
+
+		$steps = range($start, $end);
+		$steps[] = $first;
+		$steps[] = $last;
+
+		$steps = array_values(array_unique($steps));
+		sort($steps);
+
+		return $steps;
+	}
 }