src/osx/choice_osx.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/choice_osx.cpp
   3 // Purpose:     wxChoice
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   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 wxChoice::~wxChoice()
  26 {
  27     if ( HasClientObjectData() )
  28     {
  29         unsigned int i, max = GetCount();
  30
  31         for ( i = 0; i < max; ++i )
  32             delete GetClientObject( i );
  33     }
  34     delete m_popUpMenu;
  35 }
  36
  37 bool wxChoice::Create(wxWindow *parent,
  38     wxWindowID id,
  39     const wxPoint& pos,
  40     const wxSize& size,
  41     const wxArrayString& choices,
  42     long style,
  43     const wxValidator& validator,
  44     const wxString& name )
  45 {
  46     if ( !Create( parent, id, pos, size, 0, NULL, style, validator, name ) )
  47         return false;
  48
  49     Append( choices );
  50
  51     if ( !choices.empty() )
  52         SetSelection( 0 );
  53
  54     SetInitialSize( size );
  55
  56     return true;
  57 }
  58
  59 bool wxChoice::Create(wxWindow *parent,
  60     wxWindowID id,
  61     const wxPoint& pos,
  62     const wxSize& size,
  63     int n,
  64     const wxString choices[],
  65     long style,
  66     const wxValidator& validator,
  67     const wxString& name )
  68 {
  69     DontCreatePeer();
  70
  71     if ( !wxChoiceBase::Create( parent, id, pos, size, style, validator, name ) )
  72         return false;
  73
  74     m_popUpMenu = new wxMenu();
  75     m_popUpMenu->SetNoEventsMode(true);
  76
  77     SetPeer(wxWidgetImpl::CreateChoice( this, parent, id, m_popUpMenu, pos, size, style, GetExtraStyle() ));
  78
  79     MacPostControlCreate( pos, size );
  80
  81 #if !wxUSE_STL
  82     if ( style & wxCB_SORT )
  83         // autosort
  84         m_strings = wxArrayString( 1 );
  85 #endif
  86
  87     Append(n, choices);
  88
  89     // Set the first item as being selected
  90     if (n > 0)
  91         SetSelection( 0 );
  92
  93     // Needed because it is a wxControlWithItems
  94     SetInitialSize( size );
  95
  96     return true;
  97 }
  98
  99 // ----------------------------------------------------------------------------
 100 // adding/deleting items to/from the list
 101 // ----------------------------------------------------------------------------
 102
 103 int wxChoice::DoInsertItems(const wxArrayStringsAdapter & items,
 104                             unsigned int pos,
 105                             void **clientData, wxClientDataType type)
 106 {
 107     const unsigned int numItems = items.GetCount();
 108     for( unsigned int i = 0; i < numItems; ++i, ++pos )
 109     {
 110         unsigned int idx;
 111
 112 #if wxUSE_STL
 113         if ( IsSorted() )
 114         {
 115             wxArrayString::iterator
 116                 insertPoint = std::lower_bound( m_strings.begin(), m_strings.end(), items[i] );
 117             idx = insertPoint - m_strings.begin();
 118             m_strings.insert( insertPoint, items[i] );
 119         }
 120         else
 121 #endif // wxUSE_STL
 122         {
 123             idx = pos;
 124             m_strings.Insert( items[i], idx );
 125         }
 126
 127         wxString text = items[i];
 128         if (text == wxEmptyString)
 129             text = " ";  // menu items can't have empty labels
 130         m_popUpMenu->Insert( idx, i+1, text );
 131         m_datas.Insert( NULL, idx );
 132         AssignNewItemClientData(idx, clientData, i, type);
 133     }
 134
 135     GetPeer()->SetMaximum( GetCount() );
 136
 137     return pos - 1;
 138 }
 139
 140 void wxChoice::DoDeleteOneItem(unsigned int n)
 141 {
 142     wxCHECK_RET( IsValid(n) , wxT("wxChoice::Delete: invalid index") );
 143
 144     if ( HasClientObjectData() )
 145         delete GetClientObject( n );
 146
 147     m_popUpMenu->Delete( m_popUpMenu->FindItemByPosition( n ) );
 148
 149     m_strings.RemoveAt( n ) ;
 150     m_datas.RemoveAt( n ) ;
 151     GetPeer()->SetMaximum( GetCount() ) ;
 152
 153 }
 154
 155 void wxChoice::DoClear()
 156 {
 157     for ( unsigned int i = 0 ; i < GetCount() ; i++ )
 158     {
 159         m_popUpMenu->Delete( m_popUpMenu->FindItemByPosition( 0 ) );
 160     }
 161
 162     m_strings.Empty() ;
 163     m_datas.Empty() ;
 164
 165     GetPeer()->SetMaximum( 0 ) ;
 166 }
 167
 168 // ----------------------------------------------------------------------------
 169 // selection
 170 // ----------------------------------------------------------------------------
 171 int wxChoice::GetSelection() const
 172 {
 173     return GetPeer()->GetValue();
 174 }
 175
 176 void wxChoice::SetSelection( int n )
 177 {
 178     GetPeer()->SetValue( n );
 179 }
 180
 181 // ----------------------------------------------------------------------------
 182 // string list functions
 183 // ----------------------------------------------------------------------------
 184
 185 unsigned int wxChoice::GetCount() const
 186 {
 187     return m_strings.GetCount() ;
 188 }
 189
 190 int wxChoice::FindString( const wxString& s, bool bCase ) const
 191 {
 192 #if !wxUSE_STL
 193     // Avoid assert for non-default args passed to sorted array Index
 194     if ( IsSorted() )
 195         bCase = true;
 196 #endif
 197
 198     return m_strings.Index( s , bCase ) ;
 199 }
 200
 201 void wxChoice::SetString(unsigned int n, const wxString& s)
 202 {
 203     wxCHECK_RET( IsValid(n), wxT("wxChoice::SetString(): invalid index") );
 204
 205     m_strings[n] = s ;
 206
 207     m_popUpMenu->FindItemByPosition( n )->SetItemLabel( s ) ;
 208 }
 209
 210 wxString wxChoice::GetString(unsigned int n) const
 211 {
 212     wxCHECK_MSG( IsValid(n), wxEmptyString, wxT("wxChoice::GetString(): invalid index") );
 213
 214     return m_strings[n] ;
 215 }
 216
 217 // ----------------------------------------------------------------------------
 218 // client data
 219 // ----------------------------------------------------------------------------
 220 void wxChoice::DoSetItemClientData(unsigned int n, void* clientData)
 221 {
 222     m_datas[n] = (char*)clientData ;
 223 }
 224
 225 void * wxChoice::DoGetItemClientData(unsigned int n) const
 226 {
 227     return (void *)m_datas[n];
 228 }
 229
 230 bool wxChoice::OSXHandleClicked( double WXUNUSED(timestampsec) )
 231 {
 232     wxCommandEvent event( wxEVT_COMMAND_CHOICE_SELECTED, m_windowId );
 233
 234     // actually n should be made sure by the os to be a valid selection, but ...
 235     int n = GetSelection();
 236     if ( n > -1 )
 237     {
 238         event.SetInt( n );
 239         event.SetString( GetStringSelection() );
 240         event.SetEventObject( this );
 241
 242         if ( HasClientObjectData() )
 243             event.SetClientObject( GetClientObject( n ) );
 244         else if ( HasClientUntypedData() )
 245             event.SetClientData( GetClientData( n ) );
 246
 247         ProcessCommand( event );
 248     }
 249
 250     return true ;
 251 }
 252
 253 wxSize wxChoice::DoGetBestSize() const
 254 {
 255     int lbWidth = GetCount() > 0 ? 20 : 100;  // some defaults
 256     wxSize baseSize = wxWindow::DoGetBestSize();
 257     int lbHeight = baseSize.y;
 258     int wLine;
 259
 260     {
 261         wxClientDC dc(const_cast<wxChoice*>(this));
 262
 263         // Find the widest line
 264         for(unsigned int i = 0; i < GetCount(); i++)
 265         {
 266             wxString str(GetString(i));
 267
 268             wxCoord width, height ;
 269             dc.GetTextExtent( str , &width, &height);
 270             wLine = width ;
 271
 272             lbWidth = wxMax( lbWidth, wLine ) ;
 273         }
 274
 275         // Add room for the popup arrow
 276         lbWidth += 2 * lbHeight ;
 277
 278         wxCoord width, height ;
 279         dc.GetTextExtent( wxT("X"), &width, &height);
 280         int cx = width ;
 281
 282         lbWidth += cx ;
 283     }
 284
 285     return wxSize( lbWidth, lbHeight );
 286 }
 287
 288 #endif // wxUSE_CHOICE