/////////////////////////////////////////////////////////////////////////////
// Name:        radiobut.cpp
// Purpose:     wxRadioButton
// Author:      AUTHOR
// Modified by: JS Lair (99/11/15) adding the cyclic groupe notion for radiobox
// Created:     ??/??/98
// RCS-ID:      $Id: radiobut.cpp,v 1.40 2005/08/13 09:48:29 JS Exp $
// Copyright:   (c) AUTHOR
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "radiobut.h"
#endif

#include "wx/wxprec.h"

#if wxUSE_RADIOBTN

#include "wx/radiobut.h"

IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)

#include "wx/mac/uma.h"

bool wxRadioButton::Create(wxWindow *parent, wxWindowID id,
           const wxString& label,
           const wxPoint& pos,
           const wxSize& size, long style,
           const wxValidator& validator,
           const wxString& name)
{
    m_macIsUserPane = false ;

    if ( !wxControl::Create(parent, id, pos, size, style, validator, name) )
        return false;

    m_label = label ;

    Rect bounds = wxMacGetBoundsForControl( this , pos , size ) ;

    m_peer = new wxMacControl(this) ;
    verify_noerr ( CreateRadioButtonControl( MAC_WXHWND(parent->MacGetTopLevelWindowRef()) , &bounds , CFSTR("") ,
        0 , false /* no autotoggle */ , m_peer->GetControlRefAddr() ) );


    MacPostControlCreate(pos,size) ;

    m_cycle = this ;

    if (HasFlag(wxRB_GROUP))
    {
        AddInCycle( NULL ) ;
    }
    else
    {
        /* search backward for last group start */
        wxRadioButton *chief = (wxRadioButton*) NULL;
        wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
        while (node)
        {
            wxWindow *child = node->GetData();
            if (child->IsKindOf( CLASSINFO( wxRadioButton ) ) )
            {
                chief = (wxRadioButton*) child;
                if (child->HasFlag(wxRB_GROUP)) break;
            }
            node = node->GetPrevious();
        }
        AddInCycle( chief ) ;
    }
    return true;
}

wxRadioButton::~wxRadioButton()
{
    RemoveFromCycle();
}

void wxRadioButton::SetValue(bool val)
{
    wxRadioButton *cycle;
    if ( m_peer->GetValue() == val )
        return ;

    m_peer->SetValue( val ) ;
    if (val)
    {
        cycle=this->NextInCycle();
        if (cycle!=NULL)
        {
            while (cycle!=this)
            {
                cycle->SetValue(false);
                cycle=cycle->NextInCycle();
            }
        }
    }
}

bool wxRadioButton::GetValue() const
{
    return m_peer->GetValue() ;
}

void wxRadioButton::Command (wxCommandEvent & event)
{
  SetValue ( (event.GetInt() != 0) );
  ProcessCommand (event);
}

wxInt32 wxRadioButton::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) )
{
    // if already set -> no action
    if ( GetValue() )
        return noErr;

    wxRadioButton *cycle;
    cycle=this->NextInCycle();
    if (cycle!=NULL) {
        while (cycle!=this) {
            if ( cycle->GetValue() ) {
                cycle->SetValue(false);
            }
            cycle=cycle->NextInCycle();
        }
    }

    SetValue(true) ;

    wxCommandEvent event2(wxEVT_COMMAND_RADIOBUTTON_SELECTED, m_windowId );
    event2.SetEventObject(this);
    event2.SetInt( true );
    ProcessCommand(event2);
    return noErr ;
}

wxRadioButton *wxRadioButton::AddInCycle(wxRadioButton *cycle)
{
    wxRadioButton *next,*current;

    if (cycle==NULL)
    {
        m_cycle=this;
        return(this);
    }
    else
    {
        current=cycle;
        while ((next=current->m_cycle)!=cycle)
            current=current->m_cycle;
        m_cycle=cycle;
        current->m_cycle=this;
        return(cycle);
    }
}

void wxRadioButton::RemoveFromCycle()
{        
    if (m_cycle==NULL || m_cycle == this)
    {
        return;
    }
    else
    {
        // Find the previous one and make it point to the next one
        wxRadioButton* prev = this;
        while (prev->m_cycle != this)
            prev = prev->m_cycle;
        prev->m_cycle = m_cycle;
    }
}

#endif