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#pragma once
#include "../Base.h"
#include "cru/common/Base.h"
#include "cru/common/Event.h"
namespace cru::ui::model {
enum ListChangeType {
kItemAdd,
kItemRemove,
kItemSet,
kItemMove,
kClear,
};
struct CRU_UI_API ListChange {
ListChangeType type;
union {
Index position;
};
union {
Index count;
Index new_position;
};
constexpr static ListChange ItemAdd(Index index, Index count = 1) {
return {ListChangeType::kItemAdd, index, count};
}
constexpr static ListChange ItemRemove(Index index, Index count = 1) {
return {ListChangeType::kItemRemove, index, count};
}
constexpr static ListChange ItemSet(Index index, Index count = 1) {
return {ListChangeType::kItemSet, index, count};
}
constexpr static ListChange ItemMove(Index position, Index new_position) {
return {ListChangeType::kItemMove, position, new_position};
}
constexpr static ListChange Clear() { return {ListChangeType::kClear}; }
};
struct CRU_UI_API IListChangeNotify : virtual Interface {
virtual IEvent<ListChange>* ListChangeEvent() = 0;
};
} // namespace cru::ui::model
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