src/osx/choice_osx.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/choice.cpp
   3 // Purpose:     wxChoice
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id: choice.cpp 54129 2008-06-11 19:30:52Z SC $
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_CHOICE
  15
  16 #include "wx/choice.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/menu.h"
  20     #include "wx/dcclient.h"
  21 #endif
  22
  23 #include "wx/osx/private.h"
  24
  25 IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControlWithItems)
  26
  27 wxChoice::~wxChoice()
  28 {
  29     if ( HasClientObjectData() )
  30     {
  31         unsigned int i, max = GetCount();
  32
  33         for ( i = 0; i < max; ++i )
  34             delete GetClientObject( i );
  35     }
  36     delete m_popUpMenu;
  37 }
  38
  39 bool wxChoice::Create(wxWindow *parent,
  40     wxWindowID id,
  41     const wxPoint& pos,
  42     const wxSize& size,
  43     const wxArrayString& choices,
  44     long style,
  45     const wxValidator& validator,
  46     const wxString& name )
  47 {
  48     if ( !Create( parent, id, pos, size, 0, NULL, style, validator, name ) )
  49         return false;
  50
  51     Append( choices );
  52
  53     if ( !choices.empty() )
  54         SetSelection( 0 );
  55
  56     SetInitialSize( size );
  57
  58     return true;
  59 }
  60
  61 bool wxChoice::Create(wxWindow *parent,
  62     wxWindowID id,
  63     const wxPoint& pos,
  64     const wxSize& size,
  65     int n,
  66     const wxString choices[],
  67     long style,
  68     const wxValidator& validator,
  69     const wxString& name )
  70 {
  71     m_macIsUserPane = false;
  72
  73     if ( !wxChoiceBase::Create( parent, id, pos, size, style, validator, name ) )
  74         return false;
  75
  76     m_popUpMenu = new wxMenu();
  77     m_popUpMenu->SetNoEventsMode(true);
  78
  79     m_peer = wxWidgetImpl::CreateChoice( this, parent, id, m_popUpMenu, pos, size, style, GetExtraStyle() );
  80
  81     MacPostControlCreate( pos, size );
  82
  83 #if !wxUSE_STL
  84     if ( style & wxCB_SORT )
  85         // autosort
  86         m_strings = wxArrayString( 1 );
  87 #endif
  88
  89     Append(n, choices);
  90
  91     // Set the first item as being selected
  92     if (n > 0)
  93         SetSelection( 0 );
  94
  95     // Needed because it is a wxControlWithItems
  96     SetInitialSize( size );
  97
  98     return true;
  99 }
 100
 101 // ----------------------------------------------------------------------------
 102 // adding/deleting items to/from the list
 103 // ----------------------------------------------------------------------------
 104
 105 int wxChoice::DoInsertItems(const wxArrayStringsAdapter & items,
 106                             unsigned int pos,
 107                             void **clientData, wxClientDataType type)
 108 {
 109     const unsigned int numItems = items.GetCount();
 110     for( unsigned int i = 0; i < numItems; ++i, ++pos )
 111     {
 112         unsigned int idx;
 113
 114 #if wxUSE_STL
 115         if ( IsSorted() )
 116         {
 117             wxArrayString::iterator
 118                 insertPoint = std::lower_bound( m_strings.begin(), m_strings.end(), items[i] );
 119             idx = insertPoint - m_strings.begin();
 120             m_strings.insert( insertPoint, items[i] );
 121         }
 122         else
 123 #endif // wxUSE_STL
 124         {
 125             idx = pos;
 126             m_strings.Insert( items[i], idx );
 127         }
 128
 129         m_popUpMenu->Insert( idx, i+1, items[i] );
 130         m_datas.Insert( NULL, idx );
 131         AssignNewItemClientData(idx, clientData, i, type);
 132     }
 133
 134     m_peer->SetMaximum( GetCount() );
 135
 136     return pos - 1;
 137 }
 138
 139 void wxChoice::DoDeleteOneItem(unsigned int n)
 140 {
 141     wxCHECK_RET( IsValid(n) , wxT("wxChoice::Delete: invalid index") );
 142
 143     if ( HasClientObjectData() )
 144         delete GetClientObject( n );
 145
 146     m_popUpMenu->Delete( m_popUpMenu->FindItemByPosition( n ) );
 147
 148     m_strings.RemoveAt( n ) ;
 149     m_datas.RemoveAt( n ) ;
 150     m_peer->SetMaximum( GetCount() ) ;
 151
 152 }
 153
 154 void wxChoice::DoClear()
 155 {
 156     for ( unsigned int i = 0 ; i < GetCount() ; i++ )
 157     {
 158         m_popUpMenu->Delete( m_popUpMenu->FindItemByPosition( 0 ) );
 159     }
 160
 161     m_strings.Empty() ;
 162     m_datas.Empty() ;
 163
 164     m_peer->SetMaximum( 0 ) ;
 165 }
 166
 167 // ----------------------------------------------------------------------------
 168 // selection
 169 // ----------------------------------------------------------------------------
 170 int wxChoice::GetSelection() const
 171 {
 172     return m_peer->GetValue();
 173 }
 174
 175 void wxChoice::SetSelection( int n )
 176 {
 177     m_peer->SetValue( n );
 178 }
 179
 180 // ----------------------------------------------------------------------------
 181 // string list functions
 182 // ----------------------------------------------------------------------------
 183
 184 unsigned int wxChoice::GetCount() const
 185 {
 186     return m_strings.GetCount() ;
 187 }
 188
 189 int wxChoice::FindString( const wxString& s, bool bCase ) const
 190 {
 191 #if !wxUSE_STL
 192     // Avoid assert for non-default args passed to sorted array Index
 193     if ( IsSorted() )
 194         bCase = true;
 195 #endif
 196
 197     return m_strings.Index( s , bCase ) ;
 198 }
 199
 200 void wxChoice::SetString(unsigned int n, const wxString& s)
 201 {
 202     wxCHECK_RET( IsValid(n), wxT("wxChoice::SetString(): invalid index") );
 203
 204     m_strings[n] = s ;
 205
 206     m_popUpMenu->FindItemByPosition( n )->SetItemLabel( s ) ;
 207 }
 208
 209 wxString wxChoice::GetString(unsigned int n) const
 210 {
 211     wxCHECK_MSG( IsValid(n), wxEmptyString, wxT("wxChoice::GetString(): invalid index") );
 212
 213     return m_strings[n] ;
 214 }
 215
 216 // ----------------------------------------------------------------------------
 217 // client data
 218 // ----------------------------------------------------------------------------
 219 void wxChoice::DoSetItemClientData(unsigned int n, void* clientData)
 220 {
 221     wxCHECK_RET( IsValid(n), wxT("wxChoice::DoSetItemClientData: invalid index") );
 222
 223     m_datas[n] = (char*)clientData ;
 224 }
 225
 226 void * wxChoice::DoGetItemClientData(unsigned int n) const
 227 {
 228     wxCHECK_MSG( IsValid(n), NULL, wxT("wxChoice::DoGetClientData: invalid index") );
 229
 230     return (void *)m_datas[n];
 231 }
 232
 233 bool wxChoice::HandleClicked( double timestampsec )
 234 {
 235     wxCommandEvent event( wxEVT_COMMAND_CHOICE_SELECTED, m_windowId );
 236
 237     // actually n should be made sure by the os to be a valid selection, but ...
 238     int n = GetSelection();
 239     if ( n > -1 )
 240     {
 241         event.SetInt( n );
 242         event.SetString( GetStringSelection() );
 243         event.SetEventObject( this );
 244
 245         if ( HasClientObjectData() )
 246             event.SetClientObject( GetClientObject( n ) );
 247         else if ( HasClientUntypedData() )
 248             event.SetClientData( GetClientData( n ) );
 249
 250         ProcessCommand( event );
 251     }
 252
 253     return true ;
 254 }
 255
 256 wxSize wxChoice::DoGetBestSize() const
 257 {
 258     int lbWidth = GetCount() > 0 ? 20 : 100;  // some defaults
 259     int lbHeight = 20;
 260     int wLine;
 261
 262     {
 263         wxClientDC dc(const_cast<wxChoice*>(this));
 264
 265         // Find the widest line
 266         for(unsigned int i = 0; i < GetCount(); i++)
 267         {
 268             wxString str(GetString(i));
 269
 270             wxCoord width, height ;
 271             dc.GetTextExtent( str , &width, &height);
 272             wLine = width ;
 273
 274             lbWidth = wxMax( lbWidth, wLine ) ;
 275         }
 276
 277         // Add room for the popup arrow
 278         lbWidth += 2 * lbHeight ;
 279
 280         wxCoord width, height ;
 281         dc.GetTextExtent( wxT("X"), &width, &height);
 282         int cx = width ;
 283         lbHeight += 4;
 284
 285         lbWidth += cx ;
 286     }
 287
 288     return wxSize( lbWidth, lbHeight );
 289 }
 290
 291 #endif // wxUSE_CHOICE