From d7952a34bc82db471ebc960cb25a37234ddd3514 Mon Sep 17 00:00:00 2001
From: Greg Roach <fisharebest@webtrees.net>
Date: Mon, 4 Mar 2019 11:48:20 +0000
Subject: Unique stacks should be an opt-in feature

---
 app/View.php                                       | 39 ++++++++++++++++++++--
 resources/views/statistics/other/chart-setup.phtml |  4 +--
 2 files changed, 38 insertions(+), 5 deletions(-)

diff --git a/app/View.php b/app/View.php
index 7dcc6554f0..58952708ec 100644
--- a/app/View.php
+++ b/app/View.php
@@ -18,8 +18,15 @@ declare(strict_types=1);
 namespace Fisharebest\Webtrees;
 
 use Exception;
-use function ob_end_clean;
 use Throwable;
+use function array_filter;
+use function extract;
+use function implode;
+use function is_dir;
+use function is_file;
+use function ob_end_clean;
+use function ob_start;
+use function sha1;
 
 /**
  * Simple view/template class.
@@ -94,6 +101,7 @@ class View
     public static function push(string $stack)
     {
         self::$stack = $stack;
+
         ob_start();
     }
 
@@ -105,9 +113,34 @@ class View
     public static function endpush()
     {
         $content = ob_get_clean();
-        $hash    = sha1($content);
 
-        self::$stacks[self::$stack][$hash] = $content;
+        self::$stacks[self::$stack][] = $content;
+    }
+
+    /**
+     * Variant of push that will only add one copy of each item.
+     *
+     * @param string $stack
+     *
+     * @return void
+     */
+    public static function pushunique(string $stack)
+    {
+        self::$stack = $stack;
+
+        ob_start();
+    }
+
+    /**
+     * Variant of push that will only add one copy of each item.
+     *
+     * @return void
+     */
+    public static function endpushunique()
+    {
+        $content = ob_get_clean();
+
+        self::$stacks[self::$stack][sha1($content)] = $content;
     }
 
     /**
diff --git a/resources/views/statistics/other/chart-setup.phtml b/resources/views/statistics/other/chart-setup.phtml
index 694fc2da9e..10cc361b89 100644
--- a/resources/views/statistics/other/chart-setup.phtml
+++ b/resources/views/statistics/other/chart-setup.phtml
@@ -4,7 +4,7 @@ declare(strict_types=1);
 use Fisharebest\Webtrees\View;
 ?>
 
-<?php View::push('javascript') ?>
+<?php View::pushunique('javascript') ?>
 <script src="https://www.gstatic.com/charts/loader.js"></script>
 <script>
 
@@ -23,4 +23,4 @@ google.charts.load(
 );
 
 </script>
-<?php View::endpush() ?>
+<?php View::endpushunique() ?>
-- 
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