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Add ui::container_impl::empty and resize

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This commit is contained in:
Nikita Lisitsa 2022-03-08 13:02:18 +03:00
parent 390df41f30
commit e3ab6d42b6
2 changed files with 22 additions and 7 deletions
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4
libs/ui/include/psemek/ui/container_impl.hpp
View file

@ -15,12 +15,14 @@ namespace psemek::ui
element::children_range children() const;
bool empty() const;
std::size_t size() const;
void resize(std::size_t new_size);
std::size_t add(std::shared_ptr<element> c);
void add(std::shared_ptr<element> c, std::size_t index);
element * get(std::size_t index) const;
std::shared_ptr<element> get(std::size_t index) const;
std::optional<std::size_t> find(element * c) const;
std::shared_ptr<element> remove(element * c);

25
libs/ui/source/container_impl.cpp
View file

@ -8,11 +8,27 @@ namespace psemek::ui
return element::children_range{children_range_.data(), children_range_.data() + children_range_.size()};
}
bool container_impl::empty() const
{
return children_.empty();
}
std::size_t container_impl::size() const
{
return children_.size();
}
void container_impl::resize(std::size_t new_size)
{
auto old_size = children_.size();
for (std::size_t i = new_size; i < old_size; ++i)
remove(i);
children_.resize(new_size);
children_range_.resize(new_size);
for (std::size_t i = old_size; i < new_size; ++i)
children_range_[i] = nullptr;
}
std::size_t container_impl::add(std::shared_ptr<element> c)
{
std::size_t index = 0;
@ -24,20 +40,17 @@ namespace psemek::ui
void container_impl::add(std::shared_ptr<element> c, std::size_t index)
{
if (index >= children_.size())
{
children_.resize(index + 1);
children_range_.resize(index + 1);
}
resize(index + 1);
children_[index] = std::move(c);
if (children_[index]) children_[index]->set_parent(parent_);
children_range_[index] = children_[index].get();
}
element * container_impl::get(std::size_t index) const
std::shared_ptr<element> container_impl::get(std::size_t index) const
{
if (index < children_.size())
return children_[index].get();
return children_[index];
return nullptr;
}