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#pragma once
#include "Control.h"
namespace cru::ui::controls {
template <typename TRenderObject>
class SingleChildControl : public Control {
protected:
SingleChildControl() : container_render_object_(new TRenderObject()) {
container_render_object_->SetAttachedControl(this);
}
public:
Control* GetChild() {
return GetChildren().empty() ? nullptr : GetChildren().front();
}
void SetChild(Control* child) {
if (GetChild() == child) return;
if (!GetChildren().empty()) {
RemoveChildAt(0);
}
if (child) {
InsertChildAt(child, 0);
}
container_render_object_->SetChild(
child == nullptr ? nullptr : child->GetRenderObject());
}
render::RenderObject* GetRenderObject() const override {
return container_render_object_.get();
}
TRenderObject* GetContainerRenderObject() const {
return container_render_object_.get();
}
private:
std::unique_ptr<TRenderObject> container_render_object_;
};
} // namespace cru::ui::controls
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