1 files changed, 5 insertions, 16 deletions
diff --git a/src/ui/layout_control.cpp b/src/ui/layout_control.cpp
index d2b430dd..c0c4a7fe 100644
--- a/src/ui/layout_control.cpp
+++ b/src/ui/layout_control.cpp
@@ -3,24 +3,14 @@
 #include "window.hpp"
 
 namespace cru::ui {
-void ControlAddChildCheck(Control* control) {
-  if (control->GetParent() != nullptr)
-    throw std::invalid_argument("The control already has a parent.");
-
-  if (dynamic_cast<Window*>(control))
-    throw std::invalid_argument("Can't add a window as child.");
-}
-
 LayoutControl::~LayoutControl() {
   for (const auto child : children_) delete child;
 }
 
 void LayoutControl::AddChild(Control* control, const int position) {
-  ControlAddChildCheck(control);
-
-  if (position < 0 || static_cast<decltype(children_.size())>(position) >
-                          this->children_.size())
-    throw std::invalid_argument("The position is out of range.");
+  assert(control->GetParent() == nullptr);  // The control already has a parent.
+  assert(!dynamic_cast<Window*>(control));  // Can't add a window as child.
+  assert(position >= 0 || position <= this->children_.size()); // The position is out of range.
 
   children_.insert(this->children_.cbegin() + position, control);
 
@@ -31,9 +21,8 @@ void LayoutControl::AddChild(Control* control, const int position) {
 }
 
 void LayoutControl::RemoveChild(const int position) {
-  if (position < 0 || static_cast<decltype(this->children_.size())>(position) >=
-                          this->children_.size())
-    throw std::invalid_argument("The position is out of range.");
+  assert(position >= 0 &&
+         position < this->children_.size());  // The position is out of range.
 
   const auto i = children_.cbegin() + position;
   const auto child = *i;