From 524da0ad01ef6b76669fcb69539b907d315e8e87 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Mon, 11 Nov 2019 19:12:32 +0100
Subject: [PATCH] LibGUI: Add "Vector<GWidget*> GWidget::child_widgets()"

This is quite inefficient since it constructs a new Vector each time.
---
 Libraries/LibGUI/GWidget.cpp | 12 ++++++++++++
 Libraries/LibGUI/GWidget.h   |  5 ++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/Libraries/LibGUI/GWidget.cpp b/Libraries/LibGUI/GWidget.cpp
index a7088352cd..1859d84ecd 100644
--- a/Libraries/LibGUI/GWidget.cpp
+++ b/Libraries/LibGUI/GWidget.cpp
@@ -675,3 +675,15 @@ void GWidget::save_to(AK::JsonObject& json)
     json.set("size_policy", String::format("[%s,%s]", to_string(horizontal_size_policy()), to_string(vertical_size_policy())));
     CObject::save_to(json);
 }
+
+Vector<GWidget*> GWidget::child_widgets() const
+{
+    Vector<GWidget*> widgets;
+    widgets.ensure_capacity(children().size());
+    for (auto& child : const_cast<GWidget*>(this)->children()) {
+        if (child.is_widget())
+            widgets.append(static_cast<GWidget*>(&child));
+    }
+    return widgets;
+}
+
diff --git a/Libraries/LibGUI/GWidget.h b/Libraries/LibGUI/GWidget.h
index 870dc3dedb..f339ff03d8 100644
--- a/Libraries/LibGUI/GWidget.h
+++ b/Libraries/LibGUI/GWidget.h
@@ -124,7 +124,8 @@ public:
     bool is_focused() const;
     void set_focus(bool);
 
-    enum class ShouldRespectGreediness { No = 0, Yes };
+    enum class ShouldRespectGreediness { No = 0,
+        Yes };
     struct HitTestResult {
         GWidget* widget { nullptr };
         Point local_position;
@@ -220,6 +221,8 @@ public:
         });
     }
 
+    Vector<GWidget*> child_widgets() const;
+
     virtual bool is_radio_button() const { return false; }
     virtual bool is_abstract_button() const { return false; }