arranged_element_collection.hpp

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#pragma once
 
//#include "items_added_event_handler.hpp"
#include "sorter_none.hpp"
#include <xtd/collections/generic/helpers/equator>
#include <xtd/collections/generic/list>
#include <xtd/helpers/throw_helper.hpp>
#include <xtd/array>
#include <xtd/argument_out_of_range_exception>
#include <xtd/event_args>
#include <xtd/event_handler>
#include <xtd/event>
#include <xtd/object>
#include <xtd/new_ptr>
#include <xtd/size_object>

namespace xtd {
  namespace forms {
    namespace layout {
      template<class type_t, class sorter_t = sorter_none>
      class arranged_element_collection : public object, public xtd::collections::generic::icollection<type_t> {
        struct __enumerator__ : public xtd::collections::generic::ienumerator<type_t> {
        public:
          explicit __enumerator__(const arranged_element_collection& items, xtd::size version) : items_(items), version_(version) {}
          
          const type_t& current() const override {
            if (version_ != items_.items().version()) xtd::helpers::throw_helper::throws(xtd::helpers::exception_case::invalid_operation, "Collection was modified; enumeration operation may not execute.");
            if (index_ < items_.count()) return items_[index_];
            return default_value_;
          }
          
          bool move_next() override {
            if (version_ != items_.items().version()) xtd::helpers::throw_helper::throws(xtd::helpers::exception_case::invalid_operation, "Collection was modified; enumeration operation may not execute.");
            return ++index_ < items_.count();
          }
          
          void reset() override {
            version_ = items_.items().version();
            index_ = arranged_element_collection::npos;
          }
          
        protected:
          const arranged_element_collection& items_;
          xtd::size index_ = arranged_element_collection::npos;
          xtd::size version_ = 0;
          type_t default_value_;
        };
        
      public:
        class value_type : public type_t {
        public:
          value_type() = default;
          value_type(const value_type&) = default;
          value_type(value_type&&) = default;
          template<class ...args_t>
          value_type(args_t&& ...args) : type_t(args...) {}
          value_type& operator =(const value_type& value) {
            if (value.owner) owner = value.owner;
            if (owner != nullptr && !owner->data_->inserting && !owner->data_->erasing) owner->on_item_updated(pos, static_cast<type_t&>(const_cast<value_type&>(value)));
            type_t::operator =(value);
            return self_;
          }
          value_type& operator =(value_type&& value) {
            if (value.owner) owner = value.owner;
            if (owner != nullptr && !owner->data_->inserting && !owner->data_->erasing) owner->on_item_updated(pos, static_cast<type_t&>(value));
            type_t::operator =(value);
            return self_;
          }
          operator type_t() {return self_;}
          friend std::ostream& operator <<(std::ostream& os, const value_type& value) {return os << static_cast<const type_t&>(value);}
          
        private:
          friend class arranged_element_collection;
          size_t pos = size_object::max_value;
          arranged_element_collection* owner = nullptr;
        };
        
        
        using base_type = typename xtd::collections::generic::list<value_type>::base_type;
        using const_base_type = const base_type;
        using size_type = xtd::size;
        using reference = type_t&;
        using const_reference = const type_t&;
        using pointer = value_type*;
        using const_pointer = const value_type*;
        using read_only_collection = xtd::collections::object_model::read_only_collection<value_type>;
        
        
        inline static constexpr xtd::size npos = xtd::npos;
        
        static inline constexpr xtd::size bpos = 0;
        
        static inline constexpr xtd::size epos = npos - 1;
        
        
        arranged_element_collection() = default;
        explicit arranged_element_collection(size_type capacity) {self_.capacity(capacity);}
        arranged_element_collection(const xtd::collections::generic::ienumerable<type_t>& collection) {add_range(collection);}
        
        arranged_element_collection(const arranged_element_collection& collection) {*data_ = *collection.data_;}
        arranged_element_collection(arranged_element_collection&& collection) {
          data_ = std::move(collection.data_);
          collection.data_ = new_ptr<data_collection>();
        }

        arranged_element_collection(const base_type& collection) {data_->items = collection;}
        arranged_element_collection(base_type&& collection) {data_->items = std::move(collection);}
        arranged_element_collection(std::initializer_list<type_t> items) {add_range(items);}
        template <std::input_iterator input_iterator_t>
        arranged_element_collection(input_iterator_t first, input_iterator_t last) {
          for (auto iterator = first; iterator != last; ++iterator)
            add(*iterator);
        }

        
        
        size_type capacity() const noexcept {return data_->items.capacity();}
        void capacity(size_type value) {data_->items.capacity(value);}
        
        size_type count() const noexcept override {return data_->items.count();}
        
        pointer data() {return data_->items.data();}
        const_pointer data() const {return data_->items.data();}
        
        const auto& items() const {return data_->items.items();}
        auto& items() {return data_->items.items();}
        
        virtual bool sorted() const noexcept {return data_->sorted;}
        virtual arranged_element_collection& sorted(bool value) {
          if (data_->sorted == value) return self_;
          data_->sorted = value;
          if (data_->sorted) sort();
          return self_;
        }

        
        
        void add(const type_t& item) override {
          data_->items.add(item);
          size_t index = data_->items.count() - 1;
          static_cast<value_type&>(self_[index]).owner = this;
          static_cast<value_type&>(self_[index]).pos = index;
          on_item_added(index, data_->items[index]);
          if (data_->sorted) sort();
        }

        virtual void add(type_t&& item) {
          data_->items.add(item);
          size_t index = data_->items.count() - 1;
          static_cast<value_type&>(self_[index]).owner = this;
          static_cast<value_type&>(self_[index]).pos = index;
          on_item_added(index, data_->items[index]);
          if (data_->sorted) sort();
        }
        
        virtual void add_range(const arranged_element_collection& collection) {
          for (const auto& item : collection)
            add(item);
        }

        virtual void add_range(const std::vector<type_t>& collection) {
          for (const auto& item : collection)
            add(item);
        }

        virtual void add_range(const std::initializer_list<type_t>& collection) {
          for (const auto& item : collection)
            add(item);
        }

        template<class collection_t>
        void add_range(collection_t&& collection) {
          for (auto& item : collection)
            add(value_type(item));
        }

        template<class collection_t>
        void add_range(const collection_t& collection) {
          for (const auto& item : collection)
            add(item);
        }
        
        void clear() override {
          while (count())
            remove_at(0);
        }
        
        bool contains(const type_t& item) const noexcept override {
          return data_->items.contains(item);
        }
        
        void copy_to(xtd::array<type_t>& array, xtd::size array_index) const override {
          if (array_index + count() > array.size()) helpers::throw_helper::throws(helpers::exception_case::argument_out_of_range);
          auto i = size_type {0};
          for (const type_t& item : self_) {
            if (i >= count()) return;
            array[array_index + i++] = item;
          }
        }
        
        xtd::collections::generic::enumerator<type_t> get_enumerator() const noexcept override {
          return {new_ptr<__enumerator__>(self_, items().version())};
        }
        
        virtual void insert(xtd::size index, const type_t& value) {
          if (index > count()) helpers::throw_helper::throws(xtd::helpers::exception_case::argument_out_of_range);
          data_->inserting = true;
          items().insert(items().begin() + index, value);
          data_->inserting = false;
          static_cast<value_type&>(self_[index]).owner = this;
          static_cast<value_type&>(self_[index]).pos = index;
          on_item_added(index, data_->items[index]);
          if (data_->sorted) sort();
        }
        
        virtual arranged_element_collection& sort() {
          sorter_t sorter;
          sorter(items().begin(), items().end());
          return self_;
        }
        
        bool remove(const type_t& item) override {
          if (count() == 0)  return false;
          for (auto index = size_type {0}; index < count(); ++index) {
            if (!xtd::collections::generic::helpers::equator<type_t> {}(self_[index], item)) continue;
            remove_at(index);
            return true;
          }
          return false;
        }
        
        virtual void remove_at(size_t index) {
          if (index > count()) xtd::helpers::throw_helper::throws(xtd::helpers::exception_case::argument_out_of_range);
          on_item_removed(index, const_cast<value_type&>(data_->items[index]));
          data_->erasing = true;
          items().erase(items().begin() + index);
          data_->erasing = false;
        }
        
        xtd::array<type_t> to_array() const noexcept {
          return data_->items.count() ? xtd::array<type_t>(data_->items.data(), data_->items.count()) : xtd::array<type_t> {};
        }

        
        
        arranged_element_collection& operator =(const arranged_element_collection& other) {
          clear();
          add_range(other);
          return self_;
        }

        arranged_element_collection& operator =(arranged_element_collection&& other) noexcept {
          clear();
          add_range(std::move(other.data_->items));
          return self_;
        }

        arranged_element_collection& operator =(const std::initializer_list<type_t>& items) {
          clear();
          add_range(items);
          return self_;
        }
        
        value_type& operator [](size_type index) {
          if ((index >= count() && index <= ~count() - 1) || index == npos) xtd::helpers::throw_helper::throws(xtd::helpers::exception_case::index_out_of_range);
          data_->items[index].pos = index > npos / 2 ? count() - (npos - index) : index;
          data_->items[index].owner = this;
          return data_->items[index];
        }

        const value_type& operator [](size_type index) const {
          if ((index >= count() && index <= ~count() - 1) || index == npos) xtd::helpers::throw_helper::throws(xtd::helpers::exception_case::index_out_of_range);
          data_->items[index].pos = index > npos / 2 ? count() - (npos - index) : index;
          data_->items[index].owner = const_cast<arranged_element_collection*>(this);
          return data_->items[index];
        }
        
        operator const_base_type& () const noexcept {return items();}
        operator base_type& () noexcept {return items();}
        
        bool operator ==(const arranged_element_collection& value) const {return data_->items == value.data_->items;}
        bool operator !=(const arranged_element_collection& value) const {return !operator ==(value);}
        
        
        event<arranged_element_collection, delegate<void(size_t, type_t& item)>> item_added;
        
        event<arranged_element_collection, delegate<void(size_t, type_t& item)>> item_updated;
        
        event<arranged_element_collection, delegate<void(size_t, type_t& item)>> item_removed;
        
        
        using reverse_iterator [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items::reverse_iterator - Will be removed in version 0.4.0.")]] = typename xtd::collections::generic::list<value_type>::base_type::reverse_iterator;
        using const_reverse_iterator [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items::const_reverse_iterator - Will be removed in version 0.4.0.")]] = typename xtd::collections::generic::list<value_type>::base_type::const_reverse_iterator;
        
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items().max_size - Will be removed in version 0.4.0.")]]
        size_type max_size() const noexcept {return data_->items.max_size();}
        
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::operator [] - Will be removed in version 0.4.0.")]]
        reference at(size_type pos) {
          data_->items[pos].pos = pos;
          data_->items[pos].owner = this;
          return data_->items.at(pos);
        }

        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::operator [] - Will be removed in version 0.4.0.")]]
        const_reference at(size_type pos) const {return data_->items.at(pos);}
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::operator [~1_z] - Will be removed in version 0.4.0.")]]
        reference back() {return data_->items.back();}
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::operator [~1_z] - Will be removed in version 0.4.0.")]]
        const_reference back() const {return data_->items.back();}
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items().crbegin - Will be removed in version 0.4.0.")]]
        const_reverse_iterator crbegin() const noexcept {return data_->items.crbegin();}
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items().crend - Will be removed in version 0.4.0.")]]
        const_reverse_iterator crend() const noexcept {return data_->items.crend();}
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::operator [0] - Will be removed in version 0.4.0.")]]
        reference front() {return data_->items.front();}
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::operator [0] - Will be removed in version 0.4.0.")]]
        const_reference front() const {return data_->items.front();}
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items().get_allocator - Will be removed in version 0.4.0.")]]
        auto get_allocator() const noexcept {return data_->items.get_allocator();}
        
        template<class ...args_t>
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::insert - Will be removed in version 0.4.0.")]]
        void emplace(xtd::collections::generic::list<value_type>::const_iterator pos, args_t&& ... args) {
          auto index = pos - items().begin();
          data_->inserting = true;
          auto result = data_->items.insert(pos, args...);
          data_->inserting = false;
          self_[index].owner = this;
          self_[index].pos = index;
          on_item_added(index, data_->items[index]);
          if (data_->sorted) sort();
          return result;
        }
        
        template<class ...args_t>
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::add - Will be removed in version 0.4.0.")]]
        void emplace_back(args_t&& ... args) {
          data_->items.emplace_back(args...);
          size_t index = data_->items.size() - 1;
          self_[index].owner = this;
          self_[index].pos = index;
          on_item_added(index, data_->items[index]);
          if (data_->sorted) sort();
        }
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::remove_at - Will be removed in version 0.4.0.")]]
        auto erase(xtd::collections::generic::list<value_type>::iterator pos) {
          on_item_removed(pos - items().begin(), *pos);
          data_->erasing = true;
          auto result = items().erase(pos);
          data_->erasing = false;
          return result;
        }

        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::remove_at - Will be removed in version 0.4.0.")]]
        auto erase(xtd::collections::generic::list<value_type>::const_iterator pos) {
          on_item_removed(pos - items().begin(), const_cast<value_type&>(*pos));
          data_->erasing = true;
          auto result = items().erase(pos);
          data_->erasing = false;
          return result;
        }
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::remove_at - Will be removed in version 0.4.0.")]]
        auto erase(xtd::collections::generic::list<value_type>::iterator first, xtd::collections::generic::list<value_type>::iterator last) {
          auto result = items().end();
          auto index = first - items().begin();
          for (auto it = first; it <= last; ++it)
            remove_at(index++);
          return result;
        }

        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::remove_at - Will be removed in version 0.4.0.")]]
        auto erase(xtd::collections::generic::list<value_type>::const_iterator first, xtd::collections::generic::list<value_type>::const_iterator last) {
          auto result = items().end();
          auto index = first - items().begin();
          for (auto it = first; it <= last; ++it)
            remove_at(index++);
          return result;
        }
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::remove_at - Will be removed in version 0.4.0.")]]
        void erase_at(size_t index) {
          remove_at(index);
        }
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::insert - Will be removed in version 0.4.0.")]]
        auto insert(xtd::collections::generic::list<value_type>::const_iterator pos, const type_t& value) {
          auto index = pos - items().begin();
          data_->inserting = true;
          auto result = items().insert(pos, value);
          data_->inserting = false;
          self_[index].owner = this;
          self_[index].pos = index;
          on_item_added(index, data_->items[index]);
          if (data_->sorted) sort();
          return result;
        }

        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::insert - Will be removed in version 0.4.0.")]]
        auto insert(xtd::collections::generic::list<value_type>::const_iterator pos, type_t&& value) {
          auto index = pos - items().begin();
          data_->inserting = true;
          auto result = items().insert(pos, value);
          data_->inserting = false;
          self_[index].owner = this;
          self_[index].pos = index;
          on_item_added(index, data_->items[index]);
          if (data_->sorted) sort();
          return result;
        }
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::insert - Will be removed in version 0.4.0.")]]
        void insert_at(size_t index, const type_t& value) {
          insert(index, value);
        }
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::remove(count() - 1) - Will be removed in version 0.4.0.")]]
        void pop_back() {
          if (count() != 0) remove_at(count() - 1);
        }
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::add - Will be removed in version 0.4.0.")]]
        void push_back(const type_t& item) {
          add(item);
        }

        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::add - Will be removed in version 0.4.0.")]]
        void push_back(type_t&& item) {
          add(std::move(item));
        }
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::add_range - Will be removed in version 0.4.0.")]]
        void push_back_range(const arranged_element_collection& collection) {
          add_range(collection);
        }

        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::add_range - Will be removed in version 0.4.0.")]]
        void push_back_range(const std::vector<type_t>& collection) {
          add_range(collection);
        }

        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::add_range - Will be removed in version 0.4.0.")]]
        void push_back_range(const std::initializer_list<type_t>& collection) {
          add_range(collection);
        }

        template<class collection_t>
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::add_range - Will be removed in version 0.4.0.")]]
        void push_back_range(collection_t&& collection) {
          add_range(collection);
        }

        template<class iterator_t>
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::add_range - Will be removed in version 0.4.0.")]]
        void push_back_range(iterator_t begin, iterator_t end) {
          add_range(begin, end);
        }
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::to_array - Will be removed in version 0.4.0.")]]
        std::vector<type_t> to_vector() const noexcept {return to_array();}
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items().rbegin - Will be removed in version 0.4.0.")]]
        auto rbegin() noexcept {return data_->items.rbegin();}
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items().rbegin - Will be removed in version 0.4.0.")]]
        auto rbegin() const noexcept {return data_->items.rbegin();}
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items().rend - Will be removed in version 0.4.0.")]]
        auto rend() noexcept {return data_->items.rend();}
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items().rend - Will be removed in version 0.4.0.")]]
        auto rend() const noexcept {return data_->items.rend();}
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items().reserve - Will be removed in version 0.4.0.")]]
        void reserve(size_type size) {data_->items.reserve(size);}
        
        [[deprecated("Replaced by xtd::forms::layout::arranged_element_collection::items().shrink_to_fit - Will be removed in version 0.4.0.")]]
        void shrink_to_fit() {data_->items.shrink_to_fit();}
        
      protected:
        
        virtual void on_item_added(size_t index, type_t& item) {item_added(index, item);}
        
        virtual void on_item_updated(size_t index, type_t& item) {item_updated(index, item);}
        
        virtual void on_item_removed(size_t index, type_t& item) {item_removed(index, item);}
        
      private:
        bool is_read_only() const noexcept override {return false;}
        bool is_synchronized() const noexcept override {return false;}
        const xtd::object& sync_root() const noexcept override {return data_->sync_root;}
        
        struct data_collection {
          mutable xtd::collections::generic::list < value_type > items;
          bool inserting = false;
          bool erasing = false;
          bool sorted = false;
          xtd::object sync_root;
        };
        ptr < data_collection > data_ = new_ptr < data_collection > ();
      };
    }
  }
}