src/mac/classic/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 #include "wx/combobox.h"
  13 #include "wx/button.h"
  14 #include "wx/menu.h"
  15 #include "wx/mac/uma.h"
  16
  17 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  18
  19 // composite combobox implementation by Dan "Bud" Keith bud@otsys.com
  20
  21
  22 static int nextPopUpMenuId = 1000 ;
  23 MenuHandle NewUniqueMenu()
  24 {
  25   MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" ) ;
  26   nextPopUpMenuId++ ;
  27   return handle ;
  28 }
  29
  30
  31 // ----------------------------------------------------------------------------
  32 // constants
  33 // ----------------------------------------------------------------------------
  34
  35 // the margin between the text control and the choice
  36 static const wxCoord MARGIN = 2;
  37 static const int    POPUPWIDTH = 18;
  38 static const int    POPUPHEIGHT = 23;
  39
  40
  41 // ----------------------------------------------------------------------------
  42 // wxComboBoxText: text control forwards events to combobox
  43 // ----------------------------------------------------------------------------
  44
  45 class wxComboBoxText : public wxTextCtrl
  46 {
  47 public:
  48     wxComboBoxText( wxComboBox * cb )
  49         : wxTextCtrl( cb , 1 )
  50     {
  51         m_cb = cb;
  52     }
  53
  54 protected:
  55     void OnChar( wxKeyEvent& event )
  56     {
  57         if ( event.GetKeyCode() == WXK_RETURN )
  58         {
  59             wxString value = GetValue();
  60
  61             if ( m_cb->GetCount() == 0 )
  62             {
  63                 // make Enter generate "selected" event if there is only one item
  64                 // in the combobox - without it, it's impossible to select it at
  65                 // all!
  66                 wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
  67                 event.SetInt( 0 );
  68                 event.SetString( value );
  69                 event.SetEventObject( m_cb );
  70                 m_cb->GetEventHandler()->ProcessEvent( event );
  71             }
  72             else
  73             {
  74                 // add the item to the list if it's not there yet
  75                 if ( m_cb->FindString(value) == wxNOT_FOUND )
  76                 {
  77                     m_cb->Append(value);
  78                     m_cb->SetStringSelection(value);
  79
  80                     // and generate the selected event for it
  81                     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
  82                     event.SetInt( m_cb->GetCount() - 1 );
  83                     event.SetString( value );
  84                     event.SetEventObject( m_cb );
  85                     m_cb->GetEventHandler()->ProcessEvent( event );
  86                 }
  87
  88                 // This will invoke the dialog default action, such
  89                 // as the clicking the default button.
  90
  91                 wxWindow *parent = GetParent();
  92                 while( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL ) {
  93                     parent = parent->GetParent() ;
  94                 }
  95                 if ( parent && parent->GetDefaultItem() )
  96                 {
  97                     wxButton *def = wxDynamicCast(parent->GetDefaultItem(),
  98                                                           wxButton);
  99                     if ( def && def->IsEnabled() )
 100                     {
 101                         wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 102                         event.SetEventObject(def);
 103                         def->Command(event);
 104                         return ;
 105                    }
 106                 }
 107
 108                 return;
 109             }
 110         }
 111
 112         event.Skip();
 113     }
 114
 115 private:
 116     wxComboBox *m_cb;
 117
 118     DECLARE_EVENT_TABLE()
 119 };
 120
 121 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
 122     EVT_CHAR( wxComboBoxText::OnChar)
 123 END_EVENT_TABLE()
 124
 125 class wxComboBoxChoice : public wxChoice
 126 {
 127 public:
 128     wxComboBoxChoice(wxComboBox *cb, int style)
 129         : wxChoice( cb , 1 )
 130     {
 131         m_cb = cb;
 132     }
 133
 134 protected:
 135     void OnChoice( wxCommandEvent& e )
 136     {
 137         wxString    s = e.GetString();
 138
 139         m_cb->DelegateChoice( s );
 140         wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 141         event2.SetInt(m_cb->GetSelection());
 142         event2.SetEventObject(m_cb);
 143         event2.SetString(m_cb->GetStringSelection());
 144         m_cb->ProcessCommand(event2);
 145     }
 146
 147 private:
 148     wxComboBox *m_cb;
 149
 150     DECLARE_EVENT_TABLE()
 151 };
 152
 153 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 154     EVT_CHOICE(-1, wxComboBoxChoice::OnChoice)
 155 END_EVENT_TABLE()
 156
 157 wxComboBox::~wxComboBox()
 158 {
 159     // delete client objects
 160     FreeData();
 161
 162     // delete the controls now, don't leave them alive even though they would
 163     // still be eventually deleted by our parent - but it will be too late, the
 164     // user code expects them to be gone now
 165     if (m_text != NULL) {
 166         delete m_text;
 167         m_text = NULL;
 168     }
 169     if (m_choice != NULL) {
 170         delete m_choice;
 171         m_choice = NULL;
 172     }
 173 }
 174
 175
 176 // ----------------------------------------------------------------------------
 177 // geometry
 178 // ----------------------------------------------------------------------------
 179
 180 wxSize wxComboBox::DoGetBestSize() const
 181 {
 182     wxSize size = m_choice->GetBestSize();
 183
 184     if ( m_text != NULL )
 185     {
 186         wxSize  sizeText = m_text->GetBestSize();
 187
 188         size.x = POPUPWIDTH + sizeText.x + MARGIN;
 189     }
 190
 191     return size;
 192 }
 193
 194 void wxComboBox::DoMoveWindow(int x, int y, int width, int height) {
 195     height = POPUPHEIGHT;
 196
 197     wxControl::DoMoveWindow(x, y, width, height);
 198
 199     if ( m_text == NULL )
 200     {
 201         m_choice->SetSize(0, 0 , width, -1);
 202     }
 203     else
 204     {
 205         wxCoord wText = width - POPUPWIDTH - MARGIN;
 206         m_text->SetSize(0, 0, wText, height);
 207         m_choice->SetSize(0 + wText + MARGIN, 0, POPUPWIDTH, -1);
 208     }
 209 }
 210
 211
 212
 213 // ----------------------------------------------------------------------------
 214 // operations forwarded to the subcontrols
 215 // ----------------------------------------------------------------------------
 216
 217 bool wxComboBox::Enable(bool enable)
 218 {
 219     if ( !wxControl::Enable(enable) )
 220         return false;
 221
 222     return true;
 223 }
 224
 225 bool wxComboBox::Show(bool show)
 226 {
 227     if ( !wxControl::Show(show) )
 228         return false;
 229
 230     return true;
 231 }
 232
 233 void wxComboBox::SetFocus()
 234 {
 235     if ( m_text != NULL) {
 236         m_text->SetFocus();
 237     }
 238 }
 239
 240
 241 void wxComboBox::DelegateTextChanged( const wxString& value )
 242 {
 243     SetStringSelection( value );
 244 }
 245
 246
 247 void wxComboBox::DelegateChoice( const wxString& value )
 248 {
 249     SetStringSelection( value );
 250 }
 251
 252
 253 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 254            const wxString& value,
 255            const wxPoint& pos,
 256            const wxSize& size,
 257            const wxArrayString& choices,
 258            long style,
 259            const wxValidator& validator,
 260            const wxString& name)
 261 {
 262     wxCArrayString chs( choices );
 263
 264     return Create( parent, id, value, pos, size, chs.GetCount(),
 265                    chs.GetStrings(), style, validator, name );
 266 }
 267
 268
 269 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 270            const wxString& value,
 271            const wxPoint& pos,
 272            const wxSize& size,
 273            int n, const wxString choices[],
 274            long style,
 275            const wxValidator& validator,
 276            const wxString& name)
 277 {
 278     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 279                             wxDefaultValidator, name) )
 280     {
 281         return false;
 282     }
 283
 284     m_choice = new wxComboBoxChoice(this, style );
 285
 286     wxSize csize = size;
 287     if ( style & wxCB_READONLY )
 288     {
 289         m_text = NULL;
 290     }
 291     else
 292     {
 293         m_text = new wxComboBoxText(this);
 294         if ( size.y == -1 ) {
 295           csize.y = m_text->GetSize().y ;
 296         }
 297     }
 298
 299     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 300
 301     for ( int i = 0 ; i < n ; i++ )
 302     {
 303         m_choice->DoAppend( choices[ i ] );
 304     }
 305
 306     return true;
 307 }
 308
 309 wxString wxComboBox::GetValue() const
 310 {
 311     wxString        result;
 312
 313     if ( m_text == NULL )
 314     {
 315         result = m_choice->GetString( m_choice->GetSelection() );
 316     }
 317     else
 318     {
 319         result = m_text->GetValue();
 320     }
 321
 322     return result;
 323 }
 324
 325 void wxComboBox::SetValue(const wxString& value)
 326 {
 327     int s = FindString (value);
 328     if (s == wxNOT_FOUND && !HasFlag(wxCB_READONLY) )
 329     {
 330         m_choice->Append(value) ;
 331     }
 332     SetStringSelection( value ) ;
 333 }
 334
 335 // Clipboard operations
 336 void wxComboBox::Copy()
 337 {
 338     if ( m_text != NULL )
 339     {
 340         m_text->Copy();
 341     }
 342 }
 343
 344 void wxComboBox::Cut()
 345 {
 346     if ( m_text != NULL )
 347     {
 348         m_text->Cut();
 349     }
 350 }
 351
 352 void wxComboBox::Paste()
 353 {
 354     if ( m_text != NULL )
 355     {
 356         m_text->Paste();
 357     }
 358 }
 359
 360 void wxComboBox::SetEditable(bool editable)
 361 {
 362     if ( ( m_text == NULL ) && editable )
 363     {
 364         m_text = new wxComboBoxText( this );
 365     }
 366     else if ( ( m_text != NULL ) && !editable )
 367     {
 368         delete m_text;
 369         m_text = NULL;
 370     }
 371
 372     int currentX, currentY;
 373     GetPosition( &currentX, &currentY );
 374
 375     int currentW, currentH;
 376     GetSize( &currentW, &currentH );
 377
 378     DoMoveWindow( currentX, currentY, currentW, currentH );
 379 }
 380
 381 void wxComboBox::SetInsertionPoint(long pos)
 382 {
 383     // TODO
 384 }
 385
 386 void wxComboBox::SetInsertionPointEnd()
 387 {
 388     // TODO
 389 }
 390
 391 long wxComboBox::GetInsertionPoint() const
 392 {
 393     // TODO
 394     return 0;
 395 }
 396
 397 wxTextPos wxComboBox::GetLastPosition() const
 398 {
 399     // TODO
 400     return 0;
 401 }
 402
 403 void wxComboBox::Replace(long from, long to, const wxString& value)
 404 {
 405     // TODO
 406 }
 407
 408 void wxComboBox::Remove(long from, long to)
 409 {
 410     // TODO
 411 }
 412
 413 void wxComboBox::SetSelection(long from, long to)
 414 {
 415     // TODO
 416 }
 417
 418 int wxComboBox::DoAppend(const wxString& item)
 419 {
 420     return m_choice->DoAppend( item ) ;
 421 }
 422
 423 int wxComboBox::DoInsert(const wxString& item, int pos)
 424 {
 425     return m_choice->DoInsert( item , pos ) ;
 426 }
 427
 428 void wxComboBox::DoSetItemClientData(int n, void* clientData)
 429 {
 430     return m_choice->DoSetItemClientData( n , clientData ) ;
 431 }
 432
 433 void* wxComboBox::DoGetItemClientData(int n) const
 434 {
 435     return m_choice->DoGetItemClientData( n ) ;
 436 }
 437
 438 void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData)
 439 {
 440     return m_choice->DoSetItemClientObject( n , clientData ) ;
 441 }
 442
 443 wxClientData* wxComboBox::DoGetItemClientObject(int n) const
 444 {
 445     return m_choice->DoGetItemClientObject( n ) ;
 446 }
 447
 448 void wxComboBox::FreeData()
 449 {
 450     if ( HasClientObjectData() )
 451     {
 452         size_t count = GetCount();
 453         for ( size_t n = 0; n < count; n++ )
 454         {
 455             SetClientObject( n, NULL );
 456         }
 457     }
 458 }
 459
 460 void wxComboBox::Delete(int n)
 461 {
 462     // force client object deletion
 463     if( HasClientObjectData() )
 464         SetClientObject( n, NULL );
 465     m_choice->Delete( n );
 466 }
 467
 468 void wxComboBox::Clear()
 469 {
 470     FreeData();
 471     m_choice->Clear();
 472 }
 473
 474 int wxComboBox::GetSelection() const
 475 {
 476     return m_choice->GetSelection();
 477 }
 478
 479 void wxComboBox::SetSelection(int n)
 480 {
 481     m_choice->SetSelection( n );
 482
 483     if ( m_text != NULL )
 484     {
 485         m_text->SetValue( GetString( n ) );
 486     }
 487 }
 488
 489 int wxComboBox::FindString(const wxString& s) const
 490 {
 491     return m_choice->FindString( s );
 492 }
 493
 494 wxString wxComboBox::GetString(int n) const
 495 {
 496     return m_choice->GetString( n );
 497 }
 498
 499 wxString wxComboBox::GetStringSelection() const
 500 {
 501     int sel = GetSelection ();
 502     if (sel > -1)
 503         return wxString(this->GetString (sel));
 504     else
 505         return wxEmptyString;
 506 }
 507
 508 void wxComboBox::SetString(int n, const wxString& s)
 509 {
 510     m_choice->SetString( n , s ) ;
 511 }
 512
 513 bool wxComboBox::IsEditable() const
 514 {
 515     return m_text != NULL && !HasFlag(wxCB_READONLY);
 516 }
 517
 518 void wxComboBox::Undo()
 519 {
 520     if (m_text != NULL)
 521         m_text->Undo();
 522 }
 523
 524 void wxComboBox::Redo()
 525 {
 526     if (m_text != NULL)
 527         m_text->Redo();
 528 }
 529
 530 void wxComboBox::SelectAll()
 531 {
 532     if (m_text != NULL)
 533         m_text->SelectAll();
 534 }
 535
 536 bool wxComboBox::CanCopy() const
 537 {
 538     if (m_text != NULL)
 539         return m_text->CanCopy();
 540     else
 541         return false;
 542 }
 543
 544 bool wxComboBox::CanCut() const
 545 {
 546     if (m_text != NULL)
 547         return m_text->CanCut();
 548     else
 549         return false;
 550 }
 551
 552 bool wxComboBox::CanPaste() const
 553 {
 554     if (m_text != NULL)
 555         return m_text->CanPaste();
 556     else
 557         return false;
 558 }
 559
 560 bool wxComboBox::CanUndo() const
 561 {
 562     if (m_text != NULL)
 563         return m_text->CanUndo();
 564     else
 565         return false;
 566 }
 567
 568 bool wxComboBox::CanRedo() const
 569 {
 570     if (m_text != NULL)
 571         return m_text->CanRedo();
 572     else
 573         return false;
 574 }
 575
 576 void wxComboBox::MacHandleControlClick( WXWidget WXUNUSED(control) , wxInt16 WXUNUSED(controlpart) , bool WXUNUSED(mouseStillDown))
 577 {
 578     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 579     event.SetInt(GetSelection());
 580     event.SetEventObject(this);
 581     event.SetString(GetStringSelection());
 582     ProcessCommand(event);
 583 }
 584