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/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2006-2013
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/intrusive for documentation.
//
/////////////////////////////////////////////////////////////////////////////
//[doc_window_code
#include <boost/intrusive/list.hpp>
using namespace boost::intrusive;
//An abstract class that can be inserted in an intrusive list
class Window : public list_base_hook<>
{
public:
//This is a container those value is an abstract class: you can't do this with std::list.
typedef list<Window> win_list;
//A static intrusive list declaration
static win_list all_windows;
//Constructor. Includes this window in the list
Window() { all_windows.push_back(*this); }
//Destructor. Removes this node from the list
virtual ~Window() { all_windows.erase(win_list::s_iterator_to(*this)); }
//Pure virtual function to be implemented by derived classes
virtual void Paint() = 0;
};
//The static intrusive list declaration
Window::win_list Window::all_windows;
//Some Window derived classes
class FrameWindow : public Window
{ void Paint(){/**/} };
class EditWindow : public Window
{ void Paint(){/**/} };
class CanvasWindow : public Window
{ void Paint(){/**/} };
//A function that prints all windows stored in the intrusive list
void paint_all_windows()
{
for(Window::win_list::iterator i(Window::all_windows.begin())
, e(Window::all_windows.end())
; i != e; ++i)
i->Paint();
}
//...
//A class derived from Window
class MainWindow : public Window
{
FrameWindow frame_; //these are derived from Window too
EditWindow edit_;
CanvasWindow canvas_;
public:
void Paint(){/**/}
//...
};
//Main function
int main()
{
//When a Window class is created, is automatically registered in the global list
MainWindow window;
//Paint all the windows, sub-windows and so on
paint_all_windows();
//All the windows are automatically unregistered in their destructors.
return 0;
}
//]
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