1 files changed, 53 insertions, 0 deletions
diff --git a/src/ui/LayoutControl.cpp b/src/ui/LayoutControl.cpp
new file mode 100644
index 00000000..4813566b
--- /dev/null
+++ b/src/ui/LayoutControl.cpp
@@ -0,0 +1,53 @@
+#include "cru/ui/LayoutControl.hpp"
+
+#include "cru/ui/Window.hpp"
+
+namespace cru::ui {
+LayoutControl::~LayoutControl() {
+  for (const auto child : children_) delete child;
+}
+
+void LayoutControl::AddChild(Control* control, const Index position) {
+  Expects(control->GetParent() ==
+          nullptr);  // The control already has a parent.
+  Expects(!dynamic_cast<Window*>(control));  // Can't add a window as child.
+  Expects(position >= 0);
+  Expects(position <=
+          static_cast<Index>(
+              this->children_.size()));  // The position is out of range.
+
+  children_.insert(this->children_.cbegin() + position, control);
+
+  control->_SetParent(this);
+  control->_SetDescendantUiHost(GetUiHost());
+
+  OnAddChild(control, position);
+}
+
+void LayoutControl::RemoveChild(const Index position) {
+  Expects(position >= 0);
+  Expects(position <
+          static_cast<Index>(
+              this->children_.size()));  // The position is out of range.
+
+  const auto i = children_.cbegin() + position;
+  const auto child = *i;
+
+  children_.erase(i);
+
+  child->_SetParent(nullptr);
+  child->_SetDescendantUiHost(nullptr);
+
+  OnRemoveChild(child, position);
+}
+
+void LayoutControl::OnAddChild(Control* child, const Index position) {
+  CRU_UNUSED(child)
+  CRU_UNUSED(position)
+}
+
+void LayoutControl::OnRemoveChild(Control* child, const Index position) {
+  CRU_UNUSED(child)
+  CRU_UNUSED(position)
+}
+}  // namespace cru::ui