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#ifndef LH_ITERATORS_H
#define LH_ITERATORS_H
#include "types.h"
#include <list>
#include <functional>
namespace litehtml
{
class render_item;
class iterator_selector
{
public:
virtual bool select(const std::shared_ptr<render_item>& el) = 0;
protected:
~iterator_selector() = default;
};
enum iterator_item_type
{
iterator_item_type_child,
iterator_item_type_start_parent,
iterator_item_type_end_parent
};
class elements_iterator
{
private:
iterator_selector* m_go_inside;
iterator_selector* m_select;
bool m_return_parent;
/**
* Checks if iterator should go inside the element
*
* @param el element to check
* @return true to go inside
*/
bool go_inside(const std::shared_ptr<render_item>& el);
public:
elements_iterator(bool return_parents, iterator_selector* go_inside, iterator_selector* select);
~elements_iterator() = default;
void process(const std::shared_ptr<render_item>& container, const std::function<void (std::shared_ptr<render_item>&, iterator_item_type)>& func);
private:
void next_idx();
};
class go_inside_inline final : public iterator_selector
{
public:
bool select(const std::shared_ptr<render_item>& el) override;
};
class inline_selector final : public iterator_selector
{
public:
bool select(const std::shared_ptr<render_item>& el) override;
};
class go_inside_table final : public iterator_selector
{
public:
bool select(const std::shared_ptr<render_item>& el) override;
};
class table_rows_selector final : public iterator_selector
{
public:
bool select(const std::shared_ptr<render_item>& el) override;
};
class table_cells_selector final : public iterator_selector
{
public:
bool select(const std::shared_ptr<render_item>& el) override;
};
}
#endif // LH_ITERATORS_H
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