From 2a9600edd45cc0887368a89fc4fa1e2e3baee12c Mon Sep 17 00:00:00 2001
From: Jaex <Jaex@users.noreply.github.com>
Date: Wed, 16 Mar 2022 22:40:15 +0300
Subject: [PATCH] Filter image files

---
 ShareX.HelpersLib/Forms/ImageViewer.cs | 33 ++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/ShareX.HelpersLib/Forms/ImageViewer.cs b/ShareX.HelpersLib/Forms/ImageViewer.cs
index 5e0d364bf..667ab30b9 100644
--- a/ShareX.HelpersLib/Forms/ImageViewer.cs
+++ b/ShareX.HelpersLib/Forms/ImageViewer.cs
@@ -24,6 +24,7 @@ You should have received a copy of the GNU General Public License
 #endregion License Information (GPL v3)
 
 using System;
+using System.Collections.Generic;
 using System.Drawing;
 using System.Windows.Forms;
 
@@ -52,6 +53,7 @@ private ImageViewer(string[] images, int currentImageIndex = 0)
 
             Images = images;
             CurrentImageIndex = currentImageIndex;
+            FilterImageFiles();
             LoadCurrentImage();
         }
 
@@ -95,6 +97,37 @@ private void NavigateImage(int position)
             }
         }
 
+        private void FilterImageFiles()
+        {
+            List<string> filteredImages = new List<string>();
+
+            for (int i = 0; i < Images.Length; i++)
+            {
+                string imageFilePath = Images[i];
+
+                bool isImageFile = !string.IsNullOrEmpty(imageFilePath) && Helpers.IsImageFile(imageFilePath);
+
+                if (i == CurrentImageIndex)
+                {
+                    if (isImageFile)
+                    {
+                        CurrentImageIndex = filteredImages.Count;
+                    }
+                    else
+                    {
+                        CurrentImageIndex = 0;
+                    }
+                }
+
+                if (isImageFile)
+                {
+                    filteredImages.Add(imageFilePath);
+                }
+            }
+
+            Images = filteredImages.ToArray();
+        }
+
         private void UpdateIndexLabel()
         {
             if (!SupportsImageNavigation || Images.Length < 2) return;