wxWidgets/src/common/radiobtncmn.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/common/radiobtncmn.cpp
// Purpose:     wxRadioButton common code
// Author:      Julian Smart
// Modified by:
// Created:     04/01/98
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"


#if wxUSE_RADIOBTN

#include "wx/radiobut.h"

#ifndef WX_PRECOMP
    #include "wx/settings.h"
    #include "wx/dcscreen.h"
#endif

extern WXDLLEXPORT_DATA(const char) wxRadioButtonNameStr[] = "radioButton";
extern WXDLLEXPORT_DATA(const char) wxBitmapRadioButtonNameStr[] = "radioButton";

// ----------------------------------------------------------------------------
// XTI
// ----------------------------------------------------------------------------

wxDEFINE_FLAGS( wxRadioButtonStyle )
wxBEGIN_FLAGS( wxRadioButtonStyle )
    // new style border flags, we put them first to
    // use them for streaming out
    wxFLAGS_MEMBER(wxBORDER_SIMPLE)
    wxFLAGS_MEMBER(wxBORDER_SUNKEN)
    wxFLAGS_MEMBER(wxBORDER_DOUBLE)
    wxFLAGS_MEMBER(wxBORDER_RAISED)
    wxFLAGS_MEMBER(wxBORDER_STATIC)
    wxFLAGS_MEMBER(wxBORDER_NONE)

    // old style border flags
    wxFLAGS_MEMBER(wxSIMPLE_BORDER)
    wxFLAGS_MEMBER(wxSUNKEN_BORDER)
    wxFLAGS_MEMBER(wxDOUBLE_BORDER)
    wxFLAGS_MEMBER(wxRAISED_BORDER)
    wxFLAGS_MEMBER(wxSTATIC_BORDER)
    wxFLAGS_MEMBER(wxBORDER)

    // standard window styles
    wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
    wxFLAGS_MEMBER(wxCLIP_CHILDREN)
    wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
    wxFLAGS_MEMBER(wxWANTS_CHARS)
    wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
    wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
    wxFLAGS_MEMBER(wxVSCROLL)
    wxFLAGS_MEMBER(wxHSCROLL)

    wxFLAGS_MEMBER(wxRB_GROUP)
wxEND_FLAGS( wxRadioButtonStyle )

wxIMPLEMENT_DYNAMIC_CLASS_XTI(wxRadioButton, wxControl, "wx/radiobut.h");

wxBEGIN_PROPERTIES_TABLE(wxRadioButton)
    wxEVENT_PROPERTY( Click, wxEVT_RADIOBUTTON, wxCommandEvent )
    wxPROPERTY( Font, wxFont, SetFont, GetFont , wxEMPTY_PARAMETER_VALUE, 0 /*flags*/, \
                wxT("Helpstring"), wxT("group"))
    wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxString(), 0 /*flags*/, \
                wxT("Helpstring"), wxT("group") )
    wxPROPERTY( Value,bool, SetValue, GetValue, wxEMPTY_PARAMETER_VALUE, 0 /*flags*/, \
                wxT("Helpstring"), wxT("group") )
    wxPROPERTY_FLAGS( WindowStyle, wxRadioButtonStyle, long, SetWindowStyleFlag, \
                      GetWindowStyleFlag, wxEMPTY_PARAMETER_VALUE, 0 /*flags*/, \
                      wxT("Helpstring"), wxT("group")) // style
wxEND_PROPERTIES_TABLE()

wxEMPTY_HANDLERS_TABLE(wxRadioButton)

wxCONSTRUCTOR_6( wxRadioButton, wxWindow*, Parent, wxWindowID, Id, \
                 wxString, Label, wxPoint, Position, wxSize, Size, long, WindowStyle )


// ----------------------------------------------------------------------------
// wxRadioButton group navigation
// ----------------------------------------------------------------------------

wxRadioButton* wxRadioButtonBase::GetFirstInGroup() const
{
    wxRadioButton*
        btn = static_cast<wxRadioButton*>(const_cast<wxRadioButtonBase*>(this));
    while (true)
    {
        wxRadioButton* prevBtn = btn->GetPreviousInGroup();
        if (!prevBtn)
            return btn;

        btn = prevBtn;
    }
}

wxRadioButton* wxRadioButtonBase::GetLastInGroup() const
{
    wxRadioButton*
        btn = static_cast<wxRadioButton*>(const_cast<wxRadioButtonBase*>(this));
    while (true)
    {
        wxRadioButton* nextBtn = btn->GetNextInGroup();
        if (!nextBtn)
            return btn;

        btn = nextBtn;
    }
}

wxRadioButton* wxRadioButtonBase::GetPreviousInGroup() const
{
    if ( HasFlag(wxRB_GROUP) || HasFlag(wxRB_SINGLE) )
        return NULL;

    const wxWindowList& siblings = GetParent()->GetChildren();
    wxWindowList::compatibility_iterator nodeThis = siblings.Find(this);
    wxCHECK_MSG( nodeThis, NULL, wxT("radio button not a child of its parent?") );

    // Iterate over all previous siblings until we find the next radio button
    wxWindowList::compatibility_iterator nodeBefore = nodeThis->GetPrevious();
    wxRadioButton *prevBtn = 0;
    while (nodeBefore)
    {
        prevBtn = wxDynamicCast(nodeBefore->GetData(), wxRadioButton);
        if (prevBtn)
            break;

        nodeBefore = nodeBefore->GetPrevious();
    }

    if (!prevBtn || prevBtn->HasFlag(wxRB_SINGLE))
    {
        // no more buttons in group
        return NULL;
    }

    return prevBtn;
}

wxRadioButton* wxRadioButtonBase::GetNextInGroup() const
{
    if ( HasFlag(wxRB_SINGLE) )
        return NULL;

    const wxWindowList& siblings = GetParent()->GetChildren();
    wxWindowList::compatibility_iterator nodeThis = siblings.Find(this);
    wxCHECK_MSG( nodeThis, NULL, wxT("radio button not a child of its parent?") );

    // Iterate over all previous siblings until we find the next radio button
    wxWindowList::compatibility_iterator nodeNext = nodeThis->GetNext();
    wxRadioButton *nextBtn = 0;
    while (nodeNext)
    {
        nextBtn = wxDynamicCast(nodeNext->GetData(), wxRadioButton);
        if (nextBtn)
            break;

        nodeNext = nodeNext->GetNext();
    }

    if ( !nextBtn || nextBtn->HasFlag(wxRB_GROUP) || nextBtn->HasFlag(wxRB_SINGLE) )
    {
        // no more buttons or the first button of the next group
        return NULL;
    }

    return nextBtn;
}

#endif // wxUSE_RADIOBTN