From 7af65a468312a1f03c069e1c81d9e4578b56479c Mon Sep 17 00:00:00 2001
From: javierhimura <javier_himura@hotmail.com>
Date: Sun, 19 Mar 2023 20:33:12 +0100
Subject: [PATCH] Filter Block Dump data (#3840)

* Allow the filter results in BlockDump combobox. Write a text in the dropdown
---
 .../Save Editors/Gen8/SAV_BlockDump8.cs       | 49 +++++++++++++++++--
 1 file changed, 44 insertions(+), 5 deletions(-)

diff --git a/PKHeX.WinForms/Subforms/Save Editors/Gen8/SAV_BlockDump8.cs b/PKHeX.WinForms/Subforms/Save Editors/Gen8/SAV_BlockDump8.cs
index 9564939ab..e6f1bc781 100644
--- a/PKHeX.WinForms/Subforms/Save Editors/Gen8/SAV_BlockDump8.cs	
+++ b/PKHeX.WinForms/Subforms/Save Editors/Gen8/SAV_BlockDump8.cs	
@@ -13,8 +13,10 @@ public partial class SAV_BlockDump8 : Form
 {
     private readonly ISCBlockArray SAV;
     private readonly SCBlockMetadata Metadata;
+    private readonly ComboItem[] SortedBlockKeys;
 
     private SCBlock CurrentBlock = null!;
+    private string Filter = string.Empty;
 
     public SAV_BlockDump8(ISCBlockArray sav)
     {
@@ -29,7 +31,8 @@ public partial class SAV_BlockDump8 : Form
         Metadata = new SCBlockMetadata(SAV.Accessor, extra, Main.Settings.Advanced.GetExclusionList8());
 
         CB_Key.InitializeBinding();
-        CB_Key.DataSource = Metadata.GetSortedBlockKeyList().ToArray();
+        SortedBlockKeys = Metadata.GetSortedBlockKeyList().ToArray();
+        CB_Key.DataSource = SortedBlockKeys;
 
         CB_TypeToggle.InitializeBinding();
         CB_TypeToggle.DataSource = new[]
@@ -38,6 +41,7 @@ public partial class SAV_BlockDump8 : Form
             new ComboItem(nameof(SCTypeCode.Bool2), (int)SCTypeCode.Bool2),
         };
         CB_TypeToggle.SelectedIndexChanged += CB_TypeToggle_SelectedIndexChanged;
+        CB_Key.KeyDown += WinFormsUtil.RemoveDropCB;
 
         CB_Key.SelectedIndex = 0;
     }
@@ -267,10 +271,45 @@ public partial class SAV_BlockDump8 : Form
         if (e.KeyCode != Keys.Enter)
             return;
 
-        var text = CB_Key.Text;
-        if (text.Length != 8)
-            return;
+        var text = CB_Key.Text.Trim();
+        if (text.Length == 8)
+        {
+            var hex = (int)Util.GetHexValue(text);
+            if (hex != 0)
+            {
+                if (!string.IsNullOrEmpty(Filter))
+                {
+                    // Clear the filter
+                    CB_Key.DataSource = SortedBlockKeys;
+                    Filter = string.Empty;
+                }
+                // Input is hexadecimal number, select the item
+                CB_Key.SelectedValue = hex;
+                return;
+            }
+        }
 
-        CB_Key.SelectedValue = (int)Util.GetHexValue(text);
+        if (CB_Key.SelectedItem != null && text.Equals(CB_Key.SelectedText))
+            return; // User press enter on selected item
+
+        if (Filter.Equals(text, StringComparison.InvariantCultureIgnoreCase))
+            return; // Filter hasn't changed
+
+        Filter = text;
+        if (string.IsNullOrEmpty(text))
+        {
+            // User has cleared the filter. Restore original metadata
+            CB_Key.DataSource = SortedBlockKeys;
+            CB_Key.SelectedIndex = 0;
+            return;
+        }
+
+        // Filter combo items that contains input text
+        var filtered = Array.FindAll(SortedBlockKeys, x => x.Text.Contains(text, StringComparison.InvariantCultureIgnoreCase));
+        if (filtered.Length == 0)
+            return; // no results
+        
+        CB_Key.DataSource = filtered;
+        CB_Key.SelectedIndex = 0;
     }
 }