src/mac/carbon/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        radiobut.cpp
   3 // Purpose:     wxRadioButton
   4 // Author:      AUTHOR
   5 // Modified by: JS Lair (99/11/15) adding the cyclic group notion for radiobox
   6 // Created:     ??/??/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) AUTHOR
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_RADIOBTN
  15
  16 #include "wx/radiobut.h"
  17 #include "wx/mac/uma.h"
  18
  19 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
  20
  21
  22 bool wxRadioButton::Create( wxWindow *parent,
  23     wxWindowID id,
  24     const wxString& label,
  25     const wxPoint& pos,
  26     const wxSize& size,
  27     long style,
  28     const wxValidator& validator,
  29     const wxString& name )
  30 {
  31     m_macIsUserPane = false;
  32
  33     if ( !wxControl::Create( parent, id, pos, size, style, validator, name ) )
  34         return false;
  35
  36     m_label = label;
  37
  38     Rect bounds = wxMacGetBoundsForControl( this, pos, size );
  39
  40     m_peer = new wxMacControl( this );
  41     OSStatus err = CreateRadioButtonControl(
  42         MAC_WXHWND(parent->MacGetTopLevelWindowRef()), &bounds, CFSTR(""),
  43         0, false /* no autotoggle */, m_peer->GetControlRefAddr() );
  44     verify_noerr( err );
  45
  46     MacPostControlCreate( pos, size );
  47
  48     m_cycle = this;
  49
  50     if (HasFlag( wxRB_GROUP ))
  51     {
  52         AddInCycle( NULL );
  53     }
  54     else
  55     {
  56         // search backward for last group start
  57         wxRadioButton *chief = NULL;
  58         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  59         while (node)
  60         {
  61             wxWindow *child = node->GetData();
  62             if (child->IsKindOf( CLASSINFO( wxRadioButton ) ))
  63             {
  64                 chief = (wxRadioButton*)child;
  65                 if (child->HasFlag( wxRB_GROUP ))
  66                     break;
  67             }
  68
  69             node = node->GetPrevious();
  70         }
  71
  72         AddInCycle( chief );
  73     }
  74
  75     return true;
  76 }
  77
  78 wxRadioButton::~wxRadioButton()
  79 {
  80     RemoveFromCycle();
  81 }
  82
  83 void wxRadioButton::SetValue(bool val)
  84 {
  85     wxRadioButton *cycle;
  86     if (m_peer->GetValue() == val)
  87         return;
  88
  89     m_peer->SetValue( val );
  90     if (val)
  91     {
  92         cycle = this->NextInCycle();
  93         if (cycle != NULL)
  94         {
  95             while (cycle != this)
  96             {
  97                 cycle->SetValue( false );
  98                 cycle = cycle->NextInCycle();
  99             }
 100         }
 101     }
 102 }
 103
 104 bool wxRadioButton::GetValue() const
 105 {
 106     return m_peer->GetValue();
 107 }
 108
 109 void wxRadioButton::Command(wxCommandEvent& event)
 110 {
 111     SetValue( (event.GetInt() != 0) );
 112     ProcessCommand( event );
 113 }
 114
 115 wxInt32 wxRadioButton::MacControlHit( WXEVENTHANDLERREF WXUNUSED(handler), WXEVENTREF WXUNUSED(event) )
 116 {
 117     // if already set -> no action
 118     if (GetValue())
 119         return noErr;
 120
 121     wxRadioButton *cycle;
 122     cycle = this->NextInCycle();
 123     if (cycle != NULL)
 124     {
 125         while (cycle != this)
 126         {
 127             if (cycle->GetValue())
 128                 cycle->SetValue( false );
 129
 130             cycle = cycle->NextInCycle();
 131         }
 132     }
 133
 134     SetValue( true );
 135
 136     wxCommandEvent event2( wxEVT_COMMAND_RADIOBUTTON_SELECTED, m_windowId );
 137     event2.SetEventObject( this );
 138     event2.SetInt( true );
 139     ProcessCommand( event2 );
 140
 141     return noErr;
 142 }
 143
 144 wxRadioButton *wxRadioButton::AddInCycle(wxRadioButton *cycle)
 145 {
 146     wxRadioButton *current;
 147
 148     if (cycle == NULL)
 149     {
 150         m_cycle = this;
 151     }
 152     else
 153     {
 154         current = cycle;
 155         while (current->m_cycle != cycle)
 156             current = current->m_cycle;
 157
 158         m_cycle = cycle;
 159         current->m_cycle = this;
 160     }
 161
 162     return m_cycle;
 163 }
 164
 165 void wxRadioButton::RemoveFromCycle()
 166 {
 167     if ((m_cycle == NULL) || (m_cycle == this))
 168         return;
 169
 170     // Find the previous one and make it point to the next one
 171     wxRadioButton* prev = this;
 172     while (prev->m_cycle != this)
 173         prev = prev->m_cycle;
 174
 175     prev->m_cycle = m_cycle;
 176 }
 177
 178 #endif