DGD::funnelbuf Class Reference

#include <dgFunnel.h>

Inheritance diagram for DGD::funnelbuf:

Public Member Functions

• funnelbuf ()

  funnelbuf default constructor.
  
  

• ~funnelbuf ()

  funnelbuf destructor
  
  

Private Member Functions

• void post_process ()

  This method overloads channelbuf::post_process().
  
  

• void assoc (std::ostream *)

  This is overloaded method from channelbuf.
  
  

• void callback (Callback *cb)

  Set callback object pointer.
  
  

• const Callback * callback () const

  Get callback object pointer.
  
  

Private Attributes

• Callback * m_callback

Friends

• class funnel

Detailed Description

It overrides the channelbuf::post_process() method in order to get current line, column and amount of the written bytes.

DGD::funnelbuf keeps a pointer to a special callback object which must be derived from DGD::funnelbuf::Callback class. This pointer is initially NULL, meaning no callback. It can be set using funnelbuf::callback(Callback*) method. Once the pointer is not NULL, post_process() which is automatically invoked by channelbuf, will call the Callback::operator().

Note that funnelbuf hides post_process(), assoc() amd callback() methods, thus making them accessible by DGD::funnel objects only.

See also:

DGD::funnel

DGD::channelbuf

Constructor & Destructor Documentation

DGD::funnelbuf::funnelbuf (   )

funnelbuf default constructor. Initially it has no associated callback

DGD::funnelbuf::~funnelbuf (   )

funnelbuf destructor

Member Function Documentation

void DGD::funnelbuf::post_process (   )  [private, virtual]

This method overloads channelbuf::post_process(). It checks whether the callback is set and invokes the callback passing the current line, column and number of bytes written. See also: channelbuf::post_process() Reimplemented from DGD::channelbuf.

void DGD::funnelbuf::assoc (  std::ostream *  str  )  [private]

This is overloaded method from channelbuf. It calls the channelbuf::assoc(). The method is implemented for hiding the assoc() interface. See also: channelbuf::assoc(std::ostream*) assoc(std::ostream*,channel& channel)

void DGD::funnelbuf::callback (  Callback *  cb  )  [private]

Set callback object pointer. See also: funnelbuf::Callback

const funnelbuf::Callback * DGD::funnelbuf::callback (   )  const [private]

Get callback object pointer. See also: funnelbuf::Callback

Friends And Related Function Documentation

friend class funnel [friend]

Member Data Documentation

Callback* DGD::funnelbuf::m_callback [private]

• dgFunnel.h
• dgFunnel.cpp

Generated on Thu Aug 10 16:48:31 2006 for DGD Library by 1.3