Merge branch 'master' of https://github.com/crupest/CruUI

1 files changed, 31 insertions, 0 deletions

diff --git a/src/ui/controls/ContentControl.cpp b/src/ui/controls/ContentControl.cpp
new file mode 100644
index 00000000..8c6f0b00
--- /dev/null
+++ b/src/ui/controls/ContentControl.cpp
@@ -0,0 +1,31 @@
+#include "cru/ui/controls/ContentControl.hpp"
+
+namespace cru::ui::controls {
+Control* ContentControl::GetChild() const {
+  if (GetChildren().empty()) return nullptr;
+  return GetChildren()[0];
+}
+
+void ContentControl::SetChild(Control* child) {
+  Control* old_child = nullptr;
+  if (!GetChildren().empty()) {
+    old_child = GetChildren()[0];
+    this->RemoveChild(0);
+  }
+  if (child) {
+    this->AddChild(child, 0);
+  }
+  OnChildChanged(old_child, child);
+}
+
+void ContentControl::OnChildChanged(Control* old_child, Control* new_child) {
+  if (container_render_object_) {
+    if (old_child) {
+      container_render_object_->RemoveChild(0);
+    }
+    if (new_child) {
+      container_render_object_->AddChild(new_child->GetRenderObject(), 0);
+    }
+  }
+}
+}  // namespace cru::ui::controls