tab_control.h

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#pragma once
#include "control.h"
#include "image_list.h"
#include "tab_alignment.h"
 
namespace xtd {
  namespace forms {
    class tab_page;
  
    class forms_export_ tab_control : public control {
    public:
      tab_control();
 
      virtual tab_alignment alignment() const {return alignment_;}
      virtual tab_control& alignment(tab_alignment alignment);
      
      drawing::size default_size() const override {return {200, 100};}
      
      virtual const forms::image_list& image_list() const {return image_list_;}
      /*
      virtual forms::image_list& image_list() {return image_list_;}
       */
      virtual tab_control& image_list(const forms::image_list& value);
      
      virtual size_t selected_index() const {return selected_index_;}
      virtual tab_control& selected_index(size_t selected_index);
      
      virtual control_collection& tab_pages() {return controls();}
      virtual const control_collection& tab_pages() const {return controls();}
 
      event<tab_control, event_handler> selected_index_changed;
 
      static const size_t npos = std::numeric_limits<size_t>::max();
      
    protected:
      forms::create_params create_params() const override;
 
      drawing::size measure_control() const override;
 
      void on_control_added(const control_event_args& e) override;
      
      void on_control_removed(const control_event_args& e) override;
 
      void on_handle_created(const event_args& e) override;
 
      virtual void on_selected_index_changed(const event_args& e) {selected_index_changed(*this, e);}
      
      void recreate_handle() override;
 
      void wnd_proc(message& message) override;
      
      virtual void wm_reflect_command(message& message);
      
      friend class tab_page;
      size_t get_child_index(intptr_t page) {
        for (size_t index = 0;index < controls().size(); ++index)
          if (controls()[index].get().handle() == page) return index;
        return npos;
      }
      tab_alignment alignment_ = tab_alignment::top;
      forms::image_list image_list_;
      size_t selected_index_ = npos;
    };
  }
}