From d3974b59cb6519081ac0630a76611b39c1b1512e Mon Sep 17 00:00:00 2001
From: Knah Tsaeb <Knah-Tsaeb@knah-tsaeb.org>
Date: Wed, 14 Oct 2020 12:18:12 +0200
Subject: [PATCH] Add browser lazy loading

---
 apps/apps.php | 36 ++++++++++++++++++++++++++++++++++++
 index.php     |  9 ++++-----
 2 files changed, 40 insertions(+), 5 deletions(-)

diff --git a/apps/apps.php b/apps/apps.php
index 4ab5932..2abb66b 100644
--- a/apps/apps.php
+++ b/apps/apps.php
@@ -62,3 +62,39 @@ function makeMenu($getDir = null)
     }
     return $menu;
 }
+
+class ExtendParsedownToc extends ParsedownToc
+{
+    public function inlineImage($Excerpt)
+    {
+        if (!isset($Excerpt['text'][1]) or $Excerpt['text'][1] !== '[') {
+            return;
+        }
+
+        $Excerpt['text'] = substr($Excerpt['text'], 1);
+
+        $Link = $this->inlineLink($Excerpt);
+
+        if ($Link === null) {
+            return;
+        }
+
+        $Inline = array(
+            'extent'  => $Link['extent'] + 1,
+            'element' => array(
+                'name'       => 'img',
+                'attributes' => array(
+                    'src'     => $Link['element']['attributes']['href'],
+                    'alt'     => $Link['element']['text'],
+                    'loading' => 'lazy',
+                ),
+            ),
+        );
+
+        $Inline['element']['attributes'] += $Link['element']['attributes'];
+
+        unset($Inline['element']['attributes']['href']);
+
+        return $Inline;
+    }
+}
diff --git a/index.php b/index.php
index 335fd36..c2cd24c 100644
--- a/index.php
+++ b/index.php
@@ -23,14 +23,13 @@ if (empty($file) || !file_exists('content/' . urldecode($dir) . '/' . urldecode(
     }
 }
 
-$Parsedown = new ParsedownToc();
-
 $content = file_get_contents('content/' . urldecode($dir) . '/' . urldecode($file) . '.md');
 $options = array('selectors' => array('h2', 'h3'));
 
-$Parsedown = new ParsedownToc($options);
-$body      = $Parsedown->text($content);
-$toc       = $Parsedown->contentsList();
+$Parsedown = new ExtendParsedownToc($options);
+
+$body = $Parsedown->text($content);
+$toc  = $Parsedown->contentsList();
 
 $body = str_replace("[ ]", '<input type="checkbox" disabled>', $body);
 $body = str_replace("[x]", '<input type="checkbox" checked disabled>', $body);