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#pragma once
#include "Base.h"
#include <memory>
#include <utility>
namespace cru::ui {
class CRU_UI_API DeleteLaterImpl {
public:
virtual ~DeleteLaterImpl();
void DeleteLater();
protected:
virtual void OnPrepareDelete();
};
template <typename T>
class DeleteLaterPtr {
public:
DeleteLaterPtr() = default;
DeleteLaterPtr(const DeleteLaterPtr& other) = delete;
DeleteLaterPtr& operator=(const DeleteLaterPtr& other) = delete;
DeleteLaterPtr(DeleteLaterPtr&& other) noexcept : ptr_(other.ptr_) {
other.ptr_ = nullptr;
}
DeleteLaterPtr& operator=(DeleteLaterPtr&& other) noexcept {
if (this != &other) {
if (ptr_ != nullptr) {
ptr_->DeleteLater();
}
ptr_ = other.ptr_;
other.ptr_ = nullptr;
}
return *this;
}
~DeleteLaterPtr() {
if (ptr_ != nullptr) {
ptr_->DeleteLater();
}
}
explicit DeleteLaterPtr(T* ptr) : ptr_(ptr) {}
DeleteLaterPtr(std::unique_ptr<T>&& ptr) : ptr_(ptr.release()) {}
T& operator*() const { return *ptr_; }
T* operator->() const { return ptr_; }
explicit operator bool() const { return ptr_ != nullptr; }
T* get() const { return ptr_; }
private:
T* ptr_ = nullptr;
};
template <typename T, typename... Args>
DeleteLaterPtr<T> MakeDeleteLaterPtr(Args&&... args) {
return DeleteLaterPtr<T>(new T(std::forward<Args>(args)...));
}
} // namespace cru::ui
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