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 {
    public:
      combo_box();
 
      virtual drawing::size default_size() const override {return {121, 23};}
      
      combo_box_style drop_down_style() const {return drop_down_style_;}
      combo_box& drop_down_style(combo_box_style drop_down_style);
      
      object_collection& items() {return items_;}
      const object_collection& items() const {return items_;}
      const combo_box& items(const object_collection& items) {
        items_ = items;
        return *this;
      }
      
      using list_control::selected_index;
      list_control& selected_index(size_t selected_index) override;
      
      const item& selected_item() const {return selected_item_;}
      combo_box& selected_item(const item& selected_item);
      
      virtual bool sorted() const {return sorted_;}
      virtual combo_box& sorted(bool sorted);
      
      using list_control::text;
      control& text(const xtd::ustring& text) override {return *this;}
      
      void begin_update();
      void end_update();
 
      event<combo_box, event_handler> drop_down_style_changed;
      
    protected:
      forms::create_params create_params() const override;
 
      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 set_bounds_core(int32_t x, int32_t y, int32_t width, int32_t height, bounds_specified specified) override;
 
      void set_client_size_core(int32_t width, int32_t height) override;
      
      void wnd_proc(message& message) override;
      
      virtual void wm_reflect_command(message& message);
      
      virtual void wm_mouse_double_click(message& message);
 
      virtual void wm_mouse_down(message& message);
      
      virtual void wm_mouse_up(message& message);
      
      int32_t drop_down_height_ = 0;
      combo_box_style drop_down_style_ = combo_box_style::drop_down;
      int32_t drop_down_width_ = 0;
      object_collection items_;
      item selected_item_;
      bool sorted_ = false;
      bool user_set_size_ = false;
    };
  }
}