src/mac/carbon/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        combobox.cpp
   3 // Purpose:     wxComboBox class
   4 // Author:      AUTHOR
   5 // Modified by:
   6 // Created:     ??/??/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) AUTHOR
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "combobox.h"
  14 #endif
  15
  16 #include "wx/combobox.h"
  17 #include "wx/menu.h"
  18 #include "wx/mac/uma.h"
  19
  20 #if !USE_SHARED_LIBRARY
  21 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  22 #endif
  23
  24 // composite combobox implementation by Dan "Bud" Keith bud@otsys.com
  25
  26
  27 static int nextPopUpMenuId = 1000 ;
  28 MenuHandle NewUniqueMenu()
  29 {
  30   MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" ) ;
  31   nextPopUpMenuId++ ;
  32   return handle ;
  33 }
  34
  35
  36 // ----------------------------------------------------------------------------
  37 // constants
  38 // ----------------------------------------------------------------------------
  39
  40 // the margin between the text control and the choice
  41 static const wxCoord MARGIN = 2;
  42 static const int    POPUPWIDTH = 18;
  43 static const int    POPUPHEIGHT = 23;
  44
  45
  46 // ----------------------------------------------------------------------------
  47 // wxComboBoxText: text control forwards events to combobox
  48 // ----------------------------------------------------------------------------
  49
  50 class wxComboBoxText : public wxTextCtrl
  51 {
  52 public:
  53     wxComboBoxText( wxComboBox * cb )
  54         : wxTextCtrl( cb->GetParent(), 1 )
  55     {
  56         m_cb = cb;
  57     }
  58
  59 protected:
  60     void OnTextChange( wxCommandEvent& event )
  61     {
  62         wxString    s = GetValue();
  63
  64         if (!s.IsEmpty())
  65             m_cb->DelegateTextChanged( s );
  66
  67         event.Skip();
  68     }
  69
  70 private:
  71     wxComboBox *m_cb;
  72
  73     DECLARE_EVENT_TABLE()
  74 };
  75
  76 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
  77     EVT_TEXT(-1, wxComboBoxText::OnTextChange)
  78 END_EVENT_TABLE()
  79
  80 class wxComboBoxChoice : public wxChoice
  81 {
  82 public:
  83     wxComboBoxChoice(wxComboBox *cb, int style)
  84         : wxChoice( cb->GetParent(), 1 )
  85     {
  86         m_cb = cb;
  87     }
  88
  89 protected:
  90     void OnChoice( wxCommandEvent& e )
  91     {
  92         wxString    s = e.GetString();
  93
  94         m_cb->DelegateChoice( s );
  95     }
  96
  97 private:
  98     wxComboBox *m_cb;
  99
 100     DECLARE_EVENT_TABLE()
 101 };
 102
 103 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 104     EVT_CHOICE(-1, wxComboBoxChoice::OnChoice)
 105 END_EVENT_TABLE()
 106
 107
 108
 109
 110 wxComboBox::~wxComboBox()
 111 {
 112    // delete the controls now, don't leave them alive even though they woudl
 113     // still be eventually deleted by our parent - but it will be too late, the
 114     // user code expects them to be gone now
 115     delete m_text;
 116     delete m_choice;
 117 }
 118
 119
 120 // ----------------------------------------------------------------------------
 121 // geometry
 122 // ----------------------------------------------------------------------------
 123
 124 wxSize wxComboBox::DoGetBestSize() const
 125 {
 126     wxSize size = m_choice->GetBestSize();
 127
 128     if ( m_text != 0 )
 129     {
 130         wxSize  sizeText = m_text->GetBestSize();
 131
 132         size.x = POPUPWIDTH + sizeText.x + MARGIN;
 133     }
 134
 135     return size;
 136 }
 137
 138 void wxComboBox::DoMoveWindow(int x, int y, int width, int height) {
 139     height = POPUPHEIGHT;
 140
 141     wxControl::DoMoveWindow(x, y, width, height);
 142
 143     if ( m_text == 0 )
 144     {
 145         m_choice->SetSize(x, y, width, -1);
 146     }
 147     else
 148     {
 149         wxCoord wText = width - POPUPWIDTH;
 150         m_text->SetSize(x, y, wText, height);
 151         m_choice->SetSize(x + wText + MARGIN, y, POPUPWIDTH, -1);
 152     }
 153 }
 154
 155
 156
 157 // ----------------------------------------------------------------------------
 158 // operations forwarded to the subcontrols
 159 // ----------------------------------------------------------------------------
 160
 161 bool wxComboBox::Enable(bool enable)
 162 {
 163     if ( !wxControl::Enable(enable) )
 164         return FALSE;
 165
 166     m_choice->Enable(enable);
 167
 168     if ( m_text != 0 )
 169     {
 170         m_text->Enable(enable);
 171     }
 172
 173     return TRUE;
 174 }
 175
 176 bool wxComboBox::Show(bool show)
 177 {
 178     if ( !wxControl::Show(show) )
 179         return FALSE;
 180
 181     // under GTK Show() is called the first time before we are fully
 182     // constructed
 183     if ( m_choice )
 184     {
 185         m_choice->Show(show);
 186         if ( m_text != 0 )
 187         {
 188             m_text->Show(show);
 189         }
 190     }
 191
 192     return TRUE;
 193 }
 194
 195  void wxComboBox::SetFocus()
 196  {
 197     m_text->SetFocus();
 198  }
 199
 200
 201 void wxComboBox::DelegateTextChanged( const wxString& value ) {
 202 }
 203
 204
 205 void wxComboBox::DelegateChoice( const wxString& value )
 206 {
 207     SetStringSelection( value );
 208 }
 209
 210
 211 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 212            const wxString& value,
 213            const wxPoint& pos,
 214            const wxSize& size,
 215            int n, const wxString choices[],
 216            long style,
 217            const wxValidator& validator,
 218            const wxString& name)
 219 {
 220
 221     Rect bounds ;
 222     Str255 title ;
 223
 224     if ( !wxControl::Create(parent, id, pos, size, style,
 225                             wxDefaultValidator, name) )
 226     {
 227         return FALSE;
 228     }
 229
 230     m_choice = new wxComboBoxChoice(this, style);
 231
 232     wxSize csize = size;
 233     if ( style & wxCB_READONLY )
 234     {
 235         m_text = 0;
 236     }
 237     else
 238     {
 239         m_text = new wxComboBoxText(this);
 240         if ( size.y == -1 ) {
 241           csize.y = m_text->GetSize().y ;
 242         }
 243     }
 244
 245     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 246     for ( int i = 0 ; i < n ; i++ )
 247     {
 248         m_choice->DoAppend( choices[ i ] );
 249     }
 250
 251     // have to disable this window to avoid interfering it with message
 252     // processing to the text and the button... but pretend it is enabled to
 253     // make IsEnabled() return TRUE
 254     wxControl::Enable(FALSE); // don't use non virtual Disable() here!
 255     m_isEnabled = TRUE;
 256
 257     // we don't even need to show this window itself - and not doing it avoids
 258     // that it overwrites the text control
 259     wxControl::Show(FALSE);
 260
 261     return TRUE;
 262 }
 263
 264 wxString wxComboBox::GetValue() const
 265 {
 266     wxString        result;
 267
 268     if ( m_text == 0 )
 269     {
 270         result = m_choice->GetString( m_choice->GetSelection() );
 271     }
 272     else
 273     {
 274         result = m_text->GetValue();
 275     }
 276
 277     return result;
 278 }
 279
 280 void wxComboBox::SetValue(const wxString& value)
 281 {
 282     SetStringSelection( value ) ;
 283 }
 284
 285 // Clipboard operations
 286 void wxComboBox::Copy()
 287 {
 288     if ( m_text != 0 )
 289     {
 290         m_text->Copy();
 291     }
 292 }
 293
 294 void wxComboBox::Cut()
 295 {
 296     if ( m_text != 0 )
 297     {
 298         m_text->Cut();
 299     }
 300 }
 301
 302 void wxComboBox::Paste()
 303 {
 304     if ( m_text != 0 )
 305     {
 306         m_text->Paste();
 307     }
 308 }
 309
 310 void wxComboBox::SetEditable(bool editable)
 311 {
 312     if ( ( m_text == 0 ) && editable )
 313     {
 314         m_text = new wxComboBoxText( this );
 315     }
 316     else if ( ( m_text != 0 ) && !editable )
 317     {
 318         delete m_text;
 319         m_text = 0;
 320     }
 321
 322     int currentX, currentY;
 323     GetPosition( &currentX, &currentY );
 324
 325     int currentW, currentH;
 326     GetSize( &currentW, &currentH );
 327
 328     DoMoveWindow( currentX, currentY, currentW, currentH );
 329 }
 330
 331 void wxComboBox::SetInsertionPoint(long pos)
 332 {
 333     // TODO
 334 }
 335
 336 void wxComboBox::SetInsertionPointEnd()
 337 {
 338     // TODO
 339 }
 340
 341 long wxComboBox::GetInsertionPoint() const
 342 {
 343     // TODO
 344     return 0;
 345 }
 346
 347 long wxComboBox::GetLastPosition() const
 348 {
 349     // TODO
 350     return 0;
 351 }
 352
 353 void wxComboBox::Replace(long from, long to, const wxString& value)
 354 {
 355     // TODO
 356 }
 357
 358 void wxComboBox::Remove(long from, long to)
 359 {
 360     // TODO
 361 }
 362
 363 void wxComboBox::SetSelection(long from, long to)
 364 {
 365     // TODO
 366 }
 367
 368 void wxComboBox::Append(const wxString& item)
 369 {
 370     // I am not sure what other ports do,
 371     // but wxMac chokes on empty entries.
 372
 373     if (!item.IsEmpty())
 374         m_choice->DoAppend( item );
 375 }
 376
 377 void wxComboBox::Delete(int n)
 378 {
 379     m_choice->Delete( n );
 380 }
 381
 382 void wxComboBox::Clear()
 383 {
 384     m_choice->Clear();
 385 }
 386
 387 int wxComboBox::GetSelection() const
 388 {
 389     return m_choice->GetSelection();
 390 }
 391
 392 void wxComboBox::SetSelection(int n)
 393 {
 394     m_choice->SetSelection( n );
 395
 396     if ( m_text != 0 )
 397     {
 398         m_text->SetValue( GetString( n ) );
 399     }
 400 }
 401
 402 int wxComboBox::FindString(const wxString& s) const
 403 {
 404     return m_choice->FindString( s );
 405 }
 406
 407 wxString wxComboBox::GetString(int n) const
 408 {
 409     return m_choice->GetString( n );
 410 }
 411
 412 wxString wxComboBox::GetStringSelection() const
 413 {
 414     int sel = GetSelection ();
 415     if (sel > -1)
 416         return wxString(this->GetString (sel));
 417     else
 418         return wxString("");
 419 }
 420
 421 bool wxComboBox::SetStringSelection(const wxString& sel)
 422 {
 423     int s = FindString (sel);
 424     if (s > -1)
 425         {
 426             SetSelection (s);
 427             return TRUE;
 428         }
 429     else
 430         return FALSE;
 431 }
 432
 433 void wxComboBox::MacHandleControlClick( WXWidget control , wxInt16 controlpart )
 434 {
 435     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 436     event.SetInt(GetSelection());
 437     event.SetEventObject(this);
 438     event.SetString(GetStringSelection());
 439     ProcessCommand(event);
 440 }
 441