src/cocoa/radiobut.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/radiobut.mm
   3 // Purpose:     wxRadioButton
   4 // Author:      David Elliott
   5 // Modified by:
   6 // Created:     2003/03/16
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 David Elliott
   9 // Licence:     wxWidgets licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_RADIOBTN
  15
  16 #include "wx/radiobut.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/log.h"
  20     #include "wx/app.h"
  21 #endif //WX_PRECOMP
  22
  23 #import <AppKit/NSButton.h>
  24 #include "wx/cocoa/string.h"
  25 #include "wx/cocoa/autorelease.h"
  26
  27 #include "wx/listimpl.cpp"
  28
  29 WX_DEFINE_LIST(wxRadioButtonList);
  30
  31 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
  32 // wxRadioButtonBase == wxControl
  33 BEGIN_EVENT_TABLE(wxRadioButton, wxControl)
  34 END_EVENT_TABLE()
  35 WX_IMPLEMENT_COCOA_OWNER(wxRadioButton,NSButton,NSControl,NSView)
  36
  37 bool wxRadioButton::Create(wxWindow *parent, wxWindowID winid,
  38            const wxString& label,
  39            const wxPoint& pos,
  40            const wxSize& size,
  41            long style,
  42            const wxValidator& validator,
  43            const wxString& name)
  44 {
  45     wxAutoNSAutoreleasePool pool;
  46     m_radioMaster = NULL;
  47     if(!CreateControl(parent,winid,pos,size,style,validator,name))
  48         return false;
  49     if(style&wxRB_GROUP)
  50     {
  51         m_radioMaster = this;
  52         m_radioSlaves.Append(this);
  53     }
  54     else if(style&wxRB_SINGLE)
  55         m_radioMaster = NULL;
  56     else
  57     {
  58         for(wxWindowList::compatibility_iterator siblingNode= GetParent()->GetChildren().GetLast();
  59             siblingNode;
  60             siblingNode = siblingNode->GetPrevious())
  61         {
  62             wxRadioButton *radioButton  = wxDynamicCast(siblingNode->GetData(),wxRadioButton);
  63             if(radioButton && radioButton!=this)
  64             {
  65                 m_radioMaster = radioButton->m_radioMaster;
  66                 wxASSERT_MSG(m_radioMaster,
  67                     wxT("Previous radio button should be part of a group"));
  68                 // Don't crash, assume user meant wxRB_SINGLE
  69                 if(m_radioMaster)
  70                     m_radioMaster->m_radioSlaves.Append(this);
  71                 break;
  72             }
  73         }
  74     }
  75
  76     m_cocoaNSView = NULL;
  77     SetNSButton([[NSButton alloc] initWithFrame: MakeDefaultNSRect(size)]);
  78     [m_cocoaNSView release];
  79     [GetNSButton() setButtonType: NSRadioButton];
  80     [GetNSButton() setTitle:wxNSStringWithWxString(label)];
  81     // If it's the first in a group, it should be selected
  82     if(style&wxRB_GROUP)
  83         [GetNSButton() setState: NSOnState];
  84     [GetNSControl() sizeToFit];
  85
  86     if(m_parent)
  87         m_parent->CocoaAddChild(this);
  88     SetInitialFrameRect(pos,size);
  89
  90     return true;
  91 }
  92
  93 wxRadioButton::~wxRadioButton()
  94 {
  95     if(m_radioMaster==this)
  96     {
  97         // First get rid of ourselves (we should ALWAYS be at the head)
  98         wxRadioButtonList::compatibility_iterator slaveNode =
  99             m_radioSlaves.GetFirst();
 100         wxASSERT(slaveNode);
 101         wxASSERT(slaveNode->GetData() == this);
 102         m_radioSlaves.Erase(slaveNode);
 103
 104         // Now find the new master
 105         wxRadioButton *newMaster = NULL;
 106         slaveNode = m_radioSlaves.GetFirst();
 107         if(slaveNode)
 108             newMaster = slaveNode->GetData();
 109
 110         // For each node (including the new master) set the master, remove
 111         // it from this list, and add it to the new master's list
 112         for(; slaveNode; slaveNode = m_radioSlaves.GetFirst())
 113         {
 114             wxRadioButton *radioButton = slaveNode->GetData();
 115             wxASSERT(radioButton->m_radioMaster == this);
 116             radioButton->m_radioMaster = newMaster;
 117             newMaster->m_radioSlaves.Append(radioButton);
 118             m_radioSlaves.Erase(slaveNode);
 119         }
 120     }
 121     else if(m_radioMaster)
 122     {
 123         m_radioMaster->m_radioSlaves.DeleteObject(this);
 124         m_radioMaster = NULL;
 125     }
 126     // normal stuff
 127     DisassociateNSButton(GetNSButton());
 128 }
 129
 130 void wxRadioButton::SetValue(bool value)
 131 {
 132     if(value)
 133     {
 134         [GetNSButton() setState: NSOnState];
 135         Cocoa_DeselectOtherButtonsInTheGroup();
 136     }
 137     else
 138         [GetNSButton() setState: NSOffState];
 139 }
 140
 141 bool wxRadioButton::GetValue() const
 142 {
 143     int state = [GetNSButton() state];
 144     wxASSERT(state!=NSMixedState);
 145     return state==NSOnState;
 146 }
 147
 148 /**
 149  * If this radio button is part of a group, this method turns off every other
 150  * button in the group.  If this radio button is not part of a group, this
 151  * method does absolutely nothing.
 152  */
 153 void wxRadioButton::Cocoa_DeselectOtherButtonsInTheGroup(void)
 154 {
 155     if(m_radioMaster)
 156     {
 157         for(wxRadioButtonList::compatibility_iterator slaveNode =
 158                 m_radioMaster->m_radioSlaves.GetFirst();
 159             slaveNode; slaveNode = slaveNode->GetNext())
 160         {
 161             wxRadioButton *radioButton = slaveNode->GetData();
 162             if(radioButton!=this)
 163                 radioButton->SetValue(false);
 164         }
 165     }
 166 }
 167
 168 void wxRadioButton::Cocoa_wxNSButtonAction(void)
 169 {
 170     wxLogTrace(wxTRACE_COCOA,wxT("wxRadioButton"));
 171     if([GetNSButton() state] == NSOnState)
 172     {
 173         Cocoa_DeselectOtherButtonsInTheGroup();
 174     }
 175     wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED, GetId());
 176     InitCommandEvent(event); //    event.SetEventObject(this);
 177     event.SetInt(GetValue());
 178     Command(event);
 179 }
 180
 181 #endif