src/mac/carbon/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        combobox.cpp
   3 // Purpose:     wxComboBox class
   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 #ifdef __GNUG__
  13 #pragma implementation "combobox.h"
  14 #endif
  15
  16 #include "wx/combobox.h"
  17 #include "wx/button.h"
  18 #include "wx/menu.h"
  19 #include "wx/mac/uma.h"
  20
  21 #if !USE_SHARED_LIBRARY
  22 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  23 #endif
  24
  25 // composite combobox implementation by Dan "Bud" Keith bud@otsys.com
  26
  27
  28 static int nextPopUpMenuId = 1000 ;
  29 MenuHandle NewUniqueMenu()
  30 {
  31   MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" ) ;
  32   nextPopUpMenuId++ ;
  33   return handle ;
  34 }
  35
  36
  37 // ----------------------------------------------------------------------------
  38 // constants
  39 // ----------------------------------------------------------------------------
  40
  41 // the margin between the text control and the choice
  42 static const wxCoord MARGIN = 2;
  43 static const int    POPUPWIDTH = 18;
  44 static const int    POPUPHEIGHT = 23;
  45
  46
  47 // ----------------------------------------------------------------------------
  48 // wxComboBoxText: text control forwards events to combobox
  49 // ----------------------------------------------------------------------------
  50
  51 class wxComboBoxText : public wxTextCtrl
  52 {
  53 public:
  54     wxComboBoxText( wxComboBox * cb )
  55         : wxTextCtrl( cb , 1 )
  56     {
  57         m_cb = cb;
  58     }
  59
  60 protected:
  61     void OnChar( wxKeyEvent& event )
  62     {
  63         if ( event.GetKeyCode() == WXK_RETURN )
  64         {
  65             wxString value = GetValue();
  66
  67             if ( m_cb->GetCount() == 0 )
  68             {
  69                 // make Enter generate "selected" event if there is only one item
  70                 // in the combobox - without it, it's impossible to select it at
  71                 // all!
  72                 wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
  73                 event.SetInt( 0 );
  74                 event.SetString( value );
  75                 event.SetEventObject( m_cb );
  76                 m_cb->GetEventHandler()->ProcessEvent( event );
  77             }
  78             else
  79             {
  80                 // add the item to the list if it's not there yet
  81                 if ( m_cb->FindString(value) == wxNOT_FOUND )
  82                 {
  83                     m_cb->Append(value);
  84                     m_cb->SetStringSelection(value);
  85
  86                     // and generate the selected event for it
  87                     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
  88                     event.SetInt( m_cb->GetCount() - 1 );
  89                     event.SetString( value );
  90                     event.SetEventObject( m_cb );
  91                     m_cb->GetEventHandler()->ProcessEvent( event );
  92                 }
  93
  94                 // This will invoke the dialog default action, such
  95                 // as the clicking the default button.
  96
  97                 wxWindow *parent = GetParent();
  98                 while( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL ) {
  99                     parent = parent->GetParent() ;
 100                 }
 101                 if ( parent && parent->GetDefaultItem() )
 102                 {
 103                     wxButton *def = wxDynamicCast(parent->GetDefaultItem(),
 104                                                           wxButton);
 105                     if ( def && def->IsEnabled() )
 106                     {
 107                         wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 108                         event.SetEventObject(def);
 109                         def->Command(event);
 110                         return ;
 111                    }
 112                 }
 113
 114                 return;
 115             }
 116         }
 117
 118         event.Skip();
 119     }
 120
 121 private:
 122     wxComboBox *m_cb;
 123
 124     DECLARE_EVENT_TABLE()
 125 };
 126
 127 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
 128     EVT_CHAR( wxComboBoxText::OnChar)
 129 END_EVENT_TABLE()
 130
 131 class wxComboBoxChoice : public wxChoice
 132 {
 133 public:
 134     wxComboBoxChoice(wxComboBox *cb, int style)
 135         : wxChoice( cb , 1 )
 136     {
 137         m_cb = cb;
 138     }
 139
 140 protected:
 141     void OnChoice( wxCommandEvent& e )
 142     {
 143         wxString    s = e.GetString();
 144
 145         m_cb->DelegateChoice( s );
 146         wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 147         event2.SetInt(m_cb->GetSelection());
 148         event2.SetEventObject(m_cb);
 149         event2.SetString(m_cb->GetStringSelection());
 150         m_cb->ProcessCommand(event2);
 151     }
 152
 153 private:
 154     wxComboBox *m_cb;
 155
 156     DECLARE_EVENT_TABLE()
 157 };
 158
 159 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 160     EVT_CHOICE(-1, wxComboBoxChoice::OnChoice)
 161 END_EVENT_TABLE()
 162
 163 wxComboBox::~wxComboBox()
 164 {
 165     // delete client objects
 166     FreeData();
 167
 168     // delete the controls now, don't leave them alive even though they would
 169     // still be eventually deleted by our parent - but it will be too late, the
 170     // user code expects them to be gone now
 171     if (m_text != NULL) {
 172         delete m_text;
 173         m_text = NULL;
 174     }
 175     if (m_choice != NULL) {
 176         delete m_choice;
 177         m_choice = NULL;
 178     }
 179 }
 180
 181
 182 // ----------------------------------------------------------------------------
 183 // geometry
 184 // ----------------------------------------------------------------------------
 185
 186 wxSize wxComboBox::DoGetBestSize() const
 187 {
 188     wxSize size = m_choice->GetBestSize();
 189
 190     if ( m_text != NULL )
 191     {
 192         wxSize  sizeText = m_text->GetBestSize();
 193
 194         size.x = POPUPWIDTH + sizeText.x + MARGIN;
 195     }
 196
 197     return size;
 198 }
 199
 200 void wxComboBox::DoMoveWindow(int x, int y, int width, int height) {
 201     height = POPUPHEIGHT;
 202
 203     wxControl::DoMoveWindow(x, y, width, height);
 204
 205     if ( m_text == NULL )
 206     {
 207         // we might not be fully constructed yet, therefore watch out...
 208         if ( m_choice )
 209             m_choice->SetSize(0, 0 , width, -1);
 210     }
 211     else
 212     {
 213         wxCoord wText = width - POPUPWIDTH - MARGIN;
 214         m_text->SetSize(0, 0, wText, height);
 215         m_choice->SetSize(0 + wText + MARGIN, 0, POPUPWIDTH, -1);
 216     }
 217 }
 218
 219
 220
 221 // ----------------------------------------------------------------------------
 222 // operations forwarded to the subcontrols
 223 // ----------------------------------------------------------------------------
 224
 225 bool wxComboBox::Enable(bool enable)
 226 {
 227     if ( !wxControl::Enable(enable) )
 228         return FALSE;
 229
 230     return TRUE;
 231 }
 232
 233 bool wxComboBox::Show(bool show)
 234 {
 235     if ( !wxControl::Show(show) )
 236         return FALSE;
 237
 238     return TRUE;
 239 }
 240
 241 void wxComboBox::SetFocus()
 242 {
 243     if ( m_text != NULL) {
 244         m_text->SetFocus();
 245     }
 246 }
 247
 248
 249 void wxComboBox::DelegateTextChanged( const wxString& value )
 250 {
 251     SetStringSelection( value );
 252 }
 253
 254
 255 void wxComboBox::DelegateChoice( const wxString& value )
 256 {
 257     SetStringSelection( value );
 258 }
 259
 260
 261 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 262            const wxString& value,
 263            const wxPoint& pos,
 264            const wxSize& size,
 265            const wxArrayString& choices,
 266            long style,
 267            const wxValidator& validator,
 268            const wxString& name)
 269 {
 270     wxCArrayString chs( choices );
 271
 272     return Create( parent, id, value, pos, size, chs.GetCount(),
 273                    chs.GetStrings(), style, validator, name );
 274 }
 275
 276
 277 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 278            const wxString& value,
 279            const wxPoint& pos,
 280            const wxSize& size,
 281            int n, const wxString choices[],
 282            long style,
 283            const wxValidator& validator,
 284            const wxString& name)
 285 {
 286     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 287                             wxDefaultValidator, name) )
 288     {
 289         return FALSE;
 290     }
 291
 292     m_choice = new wxComboBoxChoice(this, style );
 293
 294     wxSize csize = size;
 295     if ( style & wxCB_READONLY )
 296     {
 297         m_text = NULL;
 298     }
 299     else
 300     {
 301         m_text = new wxComboBoxText(this);
 302         if ( size.y == -1 ) {
 303           csize.y = m_text->GetSize().y ;
 304         }
 305     }
 306
 307     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 308
 309     for ( int i = 0 ; i < n ; i++ )
 310     {
 311         m_choice->DoAppend( choices[ i ] );
 312     }
 313
 314     SetBestSize(csize);   // Needed because it is a wxControlWithItems
 315
 316     return TRUE;
 317 }
 318
 319 wxString wxComboBox::GetValue() const
 320 {
 321     wxString        result;
 322
 323     if ( m_text == NULL )
 324     {
 325         result = m_choice->GetString( m_choice->GetSelection() );
 326     }
 327     else
 328     {
 329         result = m_text->GetValue();
 330     }
 331
 332     return result;
 333 }
 334
 335 void wxComboBox::SetValue(const wxString& value)
 336 {
 337     int s = FindString (value);
 338     if (s == wxNOT_FOUND && !HasFlag(wxCB_READONLY) )
 339     {
 340         m_choice->Append(value) ;
 341     }
 342     SetStringSelection( value ) ;
 343 }
 344
 345 // Clipboard operations
 346 void wxComboBox::Copy()
 347 {
 348     if ( m_text != NULL )
 349     {
 350         m_text->Copy();
 351     }
 352 }
 353
 354 void wxComboBox::Cut()
 355 {
 356     if ( m_text != NULL )
 357     {
 358         m_text->Cut();
 359     }
 360 }
 361
 362 void wxComboBox::Paste()
 363 {
 364     if ( m_text != NULL )
 365     {
 366         m_text->Paste();
 367     }
 368 }
 369
 370 void wxComboBox::SetEditable(bool editable)
 371 {
 372     if ( ( m_text == NULL ) && editable )
 373     {
 374         m_text = new wxComboBoxText( this );
 375     }
 376     else if ( ( m_text != NULL ) && !editable )
 377     {
 378         delete m_text;
 379         m_text = NULL;
 380     }
 381
 382     int currentX, currentY;
 383     GetPosition( &currentX, &currentY );
 384
 385     int currentW, currentH;
 386     GetSize( &currentW, &currentH );
 387
 388     DoMoveWindow( currentX, currentY, currentW, currentH );
 389 }
 390
 391 void wxComboBox::SetInsertionPoint(long pos)
 392 {
 393     // TODO
 394 }
 395
 396 void wxComboBox::SetInsertionPointEnd()
 397 {
 398     // TODO
 399 }
 400
 401 long wxComboBox::GetInsertionPoint() const
 402 {
 403     // TODO
 404     return 0;
 405 }
 406
 407 long wxComboBox::GetLastPosition() const
 408 {
 409     // TODO
 410     return 0;
 411 }
 412
 413 void wxComboBox::Replace(long from, long to, const wxString& value)
 414 {
 415     // TODO
 416 }
 417
 418 void wxComboBox::Remove(long from, long to)
 419 {
 420     // TODO
 421 }
 422
 423 void wxComboBox::SetSelection(long from, long to)
 424 {
 425     // TODO
 426 }
 427
 428 int wxComboBox::DoAppend(const wxString& item)
 429 {
 430     return m_choice->DoAppend( item ) ;
 431 }
 432
 433 int wxComboBox::DoInsert(const wxString& item, int pos)
 434 {
 435     return m_choice->DoInsert( item , pos ) ;
 436 }
 437
 438 void wxComboBox::DoSetItemClientData(int n, void* clientData)
 439 {
 440     return m_choice->DoSetItemClientData( n , clientData ) ;
 441 }
 442
 443 void* wxComboBox::DoGetItemClientData(int n) const
 444 {
 445     return m_choice->DoGetItemClientData( n ) ;
 446 }
 447
 448 void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData)
 449 {
 450     return m_choice->DoSetItemClientObject( n , clientData ) ;
 451 }
 452
 453 wxClientData* wxComboBox::DoGetItemClientObject(int n) const
 454 {
 455     return m_choice->DoGetItemClientObject( n ) ;
 456 }
 457
 458 void wxComboBox::FreeData()
 459 {
 460     if ( HasClientObjectData() )
 461     {
 462         size_t count = GetCount();
 463         for ( size_t n = 0; n < count; n++ )
 464         {
 465             SetClientObject( n, NULL );
 466         }
 467     }
 468 }
 469
 470 void wxComboBox::Delete(int n)
 471 {
 472     // force client object deletion
 473     if( HasClientObjectData() )
 474         SetClientObject( n, NULL );
 475     m_choice->Delete( n );
 476 }
 477
 478 void wxComboBox::Clear()
 479 {
 480     FreeData();
 481     m_choice->Clear();
 482 }
 483
 484 int wxComboBox::GetSelection() const
 485 {
 486     return m_choice->GetSelection();
 487 }
 488
 489 void wxComboBox::SetSelection(int n)
 490 {
 491     m_choice->SetSelection( n );
 492
 493     if ( m_text != NULL )
 494     {
 495         m_text->SetValue( GetString( n ) );
 496     }
 497 }
 498
 499 int wxComboBox::FindString(const wxString& s) const
 500 {
 501     return m_choice->FindString( s );
 502 }
 503
 504 wxString wxComboBox::GetString(int n) const
 505 {
 506     return m_choice->GetString( n );
 507 }
 508
 509 wxString wxComboBox::GetStringSelection() const
 510 {
 511     int sel = GetSelection ();
 512     if (sel > -1)
 513         return wxString(this->GetString (sel));
 514     else
 515         return wxEmptyString;
 516 }
 517
 518 bool wxComboBox::SetStringSelection(const wxString& sel)
 519 {
 520     int s = FindString (sel);
 521     if (s > -1)
 522         {
 523             SetSelection (s);
 524             return TRUE;
 525         }
 526     else
 527         return FALSE;
 528 }
 529
 530 void wxComboBox::SetString(int n, const wxString& s)
 531 {
 532     m_choice->SetString( n , s ) ;
 533 }
 534
 535
 536 wxInt32 wxComboBox::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) )
 537 {
 538     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 539     event.SetInt(GetSelection());
 540     event.SetEventObject(this);
 541     event.SetString(GetStringSelection());
 542     ProcessCommand(event);
 543     return noErr ;
 544 }
 545