container.h

//C Copyright (C) 2000-2006 Kevin Cowtan and University of York
//L
//L  This library is free software and is distributed under the terms
//L  and conditions of version 2.1 of the GNU Lesser General Public
//L  Licence (LGPL) with the following additional clause:
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//L     changes were used in the work. (i.e. If you make changes to the
//L     Library you must distribute those, but you do not need to
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//L     not covered by this licence.)'
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//L  Note that this clause grants an additional right and does not impose
//L  any additional restriction, and so does not affect compatibility
//L  with the GNU General Public Licence (GPL). If you wish to negotiate
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//L  You can redistribute it and/or modify the library under the terms of
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//L  later version.
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//L  WITHOUT ANY WARRANTY; without even the implied warranty of
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//L  Lesser General Public License for more details.
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#ifndef CLIPPER_CONTAINER
#define CLIPPER_CONTAINER


#include "coords.h"


namespace clipper
{



  class Container
  {
  public:
    Container( const String name = "" );
    Container( Container& parent, const String& path );

    virtual void update();

    String path() const;
    String name() const;
    void set_name( const String& name );
    bool is_destroyed_with_parent() const;
    void set_destroyed_with_parent( const bool d=true );
    void move( const String& path );

    bool has_parent() const;
    const Container& parent() const;
    Container& parent();

    int num_children() const;
    const Container& child( const int& i ) const;
    Container& child( const int& i );

    const Container& ultimate_parent() const;
    Container& ultimate_parent();

    Container* parent_ptr();
    template<class T> T* parent_of_type_ptr();
    Container* find_path_ptr( const String& path );

    virtual ~Container();

    void debug();

  private:
    // members
    String name_;
    Container* parent_;
    std::vector<Container*> children;
    bool destroyed_with_parent;

    void add_child( Container& c );
    void del_child( Container& c );

    Container( const Container& ) {}
  };



  // template function definitions

  template<class T> T* Container::parent_of_type_ptr()
  {
    // this can be done recursively with references, but gcc won't compile it.
    Container* p = this;
    while ( p->has_parent() ) {
      p = &(p->parent());
      T* pt = dynamic_cast<T*>(p);
      if ( pt != NULL ) return pt;
    }
    return NULL;
  }


} // namespace clipper

#endif