combo_box.h

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#pragma once
#include "layout/arranged_element_collection.h"
#include "combo_box_style.h"
#include "list_control.h"

namespace xtd {
  namespace forms {
    class forms_export_ combo_box : public list_control {
      struct data;
      
    public:
      
      combo_box();
      
      
      bool dropped_down() const noexcept;
      combo_box& dropped_down(bool value);
      
      combo_box_style drop_down_style() const noexcept;
      combo_box& drop_down_style(combo_box_style drop_down_style);
      
      object_collection& items() noexcept;
      const object_collection& items() const noexcept;
      const combo_box& items(const object_collection& items);
      
      using list_control::selected_index;
      list_control& selected_index(size_t selected_index) override;
      
      const item& selected_item() const noexcept;
      combo_box& selected_item(const item& selected_item);
      
      virtual bool sorted() const noexcept;
      virtual combo_box& sorted(bool sorted);
      
      using list_control::text;
      control& text(const xtd::ustring& text) override;
      
      
      void begin_update();
      
      using control::create;
      static combo_box create(const object_collection& items, size_t selected_index = object_collection::npos, const drawing::point& location = {-1, -1}, const drawing::size& size = {-1, -1}, const xtd::ustring& name = xtd::ustring::empty_string);
      static combo_box create(const control& parent, const object_collection& items, size_t selected_index, const drawing::point& location = {-1, -1}, const drawing::size& size = {-1, -1}, const xtd::ustring& name = xtd::ustring::empty_string);
      
      void end_update();
      
      
      event<combo_box, event_handler> drop_down;
      event<combo_box, event_handler> drop_down_closed;
      event<combo_box, event_handler> drop_down_style_changed;
      
    protected:
      
      forms::create_params create_params() const noexcept override;
      
      
      virtual void on_drop_down(const event_args& e);
      
      virtual void on_drop_down_closed(const event_args& e);
      
      virtual void on_drop_down_style_changed(const event_args& e);
      
      void on_handle_created(const event_args& e) override;
      void on_selected_value_changed(const event_args& e) override;
      void wnd_proc(message& message) override;
      
    private:
      void wm_command_control(message& message);
      void wm_command_control_selchange(message& message);
      void wm_mouse_double_click(message& message);
      void wm_mouse_down(message& message);
      void wm_mouse_up(message& message);
      
      std::shared_ptr<data> data_;
    };
  }
}