From cff4c534d533e2dd92ca857611da2d78e4dfccd7 Mon Sep 17 00:00:00 2001
From: Sad Pencil <qh06@qq.com>
Date: Wed, 16 Nov 2022 09:47:51 +0800
Subject: [PATCH] Reimplement FindChild and add FindChildrenStartWith

---
 ClientGUI/INItializableWindow.cs | 44 +++++++++++++++++++++-----------
 1 file changed, 29 insertions(+), 15 deletions(-)

diff --git a/ClientGUI/INItializableWindow.cs b/ClientGUI/INItializableWindow.cs
index 5c6fd43b3..f8abe894f 100644
--- a/ClientGUI/INItializableWindow.cs
+++ b/ClientGUI/INItializableWindow.cs
@@ -26,29 +26,43 @@ public INItializableWindow(WindowManager windowManager) : base(windowManager)
         /// instead of the window's name.
         /// </summary>
         protected string IniNameOverride { get; set; }
+        private bool VisitChild(IEnumerable<XNAControl> list, Func<XNAControl, bool> judge)
+        {
+            foreach (XNAControl child in list)
+            {
+                bool stop = judge(child);
+                if (stop) return true;
+                stop = VisitChild(child.Children, judge);
+                if (stop) return true;
+            }
+            return false;
+        }
 
         public T FindChild<T>(string childName, bool optional = false) where T : XNAControl
         {
-            T child = FindChild<T>(Children, childName);
-            if (child == null && !optional)
+            XNAControl result = null;
+            VisitChild(new List<XNAControl>() { this }, control =>
+            {
+                if (control.Name != childName) return false;
+                result = control;
+                return true;
+            });
+            if (result == null && !optional)
                 throw new KeyNotFoundException("Could not find required child control: " + childName);
-
-            return child;
+            return (T)result;
         }
 
-        private T FindChild<T>(IEnumerable<XNAControl> list, string controlName) where T : XNAControl
+        public List<T> FindChildrenStartWith<T>(string prefix) where T : XNAControl
         {
-            foreach (XNAControl child in list)
+            List<T> result = new List<T>();
+            VisitChild(new List<XNAControl>() { this }, (control) =>
             {
-                if (child.Name == controlName)
-                    return (T)child;
-
-                T childOfChild = FindChild<T>(child.Children, controlName);
-                if (childOfChild != null)
-                    return childOfChild;
-            }
-
-            return null;
+                if (string.IsNullOrEmpty(prefix) ||
+                !string.IsNullOrEmpty(control.Name) && control.Name.StartsWith(prefix))
+                    result.Add((T)control);
+                return false;
+            });
+            return result;
         }
 
         /// <summary>