src/osx/carbon/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/combobox.cpp
   3 // Purpose:     wxComboBox class
   4 // Author:      Stefan Csomor, Dan "Bud" Keith (composite combobox)
   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_COMBOBOX
  15
  16 #include "wx/combobox.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/button.h"
  20     #include "wx/menu.h"
  21     #include "wx/containr.h"
  22     #include "wx/toplevel.h"
  23     #include "wx/textctrl.h"
  24 #endif
  25
  26 #include "wx/osx/private.h"
  27
  28 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  29
  30 WX_DELEGATE_TO_CONTROL_CONTAINER(wxComboBox, wxControl)
  31
  32 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
  33     WX_EVENT_TABLE_CONTROL_CONTAINER(wxComboBox)
  34 END_EVENT_TABLE()
  35
  36
  37 // ----------------------------------------------------------------------------
  38 // constants
  39 // ----------------------------------------------------------------------------
  40
  41 // the margin between the text control and the choice
  42 // margin should be bigger on OS X due to blue highlight
  43 // around text control.
  44 static const wxCoord MARGIN = 4;
  45 // this is the border a focus rect on OSX is needing
  46 static const int    TEXTFOCUSBORDER = 3 ;
  47
  48
  49 // ----------------------------------------------------------------------------
  50 // wxComboBoxText: text control forwards events to combobox
  51 // ----------------------------------------------------------------------------
  52
  53 class wxComboBoxText : public wxTextCtrl
  54 {
  55 public:
  56     wxComboBoxText( wxComboBox * cb )
  57         : wxTextCtrl( cb , 1 )
  58     {
  59         m_cb = cb;
  60         SetTriggerOnSetValue( false );
  61     }
  62
  63 protected:
  64     void OnChar( wxKeyEvent& event )
  65     {
  66         // Allows processing the tab key to go to the next control
  67         if (event.GetKeyCode() == WXK_TAB)
  68         {
  69             wxNavigationKeyEvent NavEvent;
  70             NavEvent.SetEventObject(this);
  71             NavEvent.SetDirection(true);
  72             NavEvent.SetWindowChange(false);
  73
  74             // Get the parent of the combo and have it process the navigation?
  75             if (m_cb->GetParent()->HandleWindowEvent(NavEvent))
  76                     return;
  77         }
  78
  79         // send the event to the combobox class in case the user has bound EVT_CHAR
  80         wxKeyEvent kevt(event);
  81         kevt.SetEventObject(m_cb);
  82         if (m_cb->HandleWindowEvent(kevt))
  83             // If the event was handled and not skipped then we're done
  84             return;
  85
  86         if ( event.GetKeyCode() == WXK_RETURN )
  87         {
  88             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_cb->GetId());
  89             event.SetString( GetValue() );
  90             event.SetInt( m_cb->GetSelection() );
  91             event.SetEventObject( m_cb );
  92
  93             // This will invoke the dialog default action,
  94             // such as the clicking the default button.
  95             if (!m_cb->HandleWindowEvent( event ))
  96             {
  97                 wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
  98                 if ( tlw && tlw->GetDefaultItem() )
  99                 {
 100                     wxButton *def = wxDynamicCast(tlw->GetDefaultItem(), wxButton);
 101                     if ( def && def->IsEnabled() )
 102                     {
 103                         wxCommandEvent event( wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 104                         event.SetEventObject(def);
 105                         def->Command(event);
 106                     }
 107                 }
 108
 109                 return;
 110             }
 111         }
 112
 113         event.Skip();
 114     }
 115
 116     void OnKeyUp( wxKeyEvent& event )
 117     {
 118         event.SetEventObject(m_cb);
 119         event.SetId(m_cb->GetId());
 120         if (! m_cb->HandleWindowEvent(event))
 121             event.Skip();
 122     }
 123
 124     void OnKeyDown( wxKeyEvent& event )
 125     {
 126         event.SetEventObject(m_cb);
 127         event.SetId(m_cb->GetId());
 128         if (! m_cb->HandleWindowEvent(event))
 129             event.Skip();
 130     }
 131
 132     void OnText( wxCommandEvent& event )
 133     {
 134         event.SetEventObject(m_cb);
 135         event.SetId(m_cb->GetId());
 136         if (! m_cb->HandleWindowEvent(event))
 137             event.Skip();
 138     }
 139
 140     void OnFocus( wxFocusEvent& event )
 141     {
 142         // in case the textcontrol gets the focus we propagate
 143         // it to the parent's handlers.
 144         wxFocusEvent evt2(event.GetEventType(),m_cb->GetId());
 145         evt2.SetEventObject(m_cb);
 146         m_cb->GetEventHandler()->ProcessEvent(evt2);
 147
 148         event.Skip();
 149     }
 150 private:
 151     wxComboBox *m_cb;
 152
 153     DECLARE_EVENT_TABLE()
 154 };
 155
 156 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
 157     EVT_KEY_DOWN(wxComboBoxText::OnKeyDown)
 158     EVT_CHAR(wxComboBoxText::OnChar)
 159     EVT_KEY_UP(wxComboBoxText::OnKeyUp)
 160     EVT_SET_FOCUS(wxComboBoxText::OnFocus)
 161     EVT_KILL_FOCUS(wxComboBoxText::OnFocus)
 162     EVT_TEXT(wxID_ANY, wxComboBoxText::OnText)
 163 END_EVENT_TABLE()
 164
 165 class wxComboBoxChoice : public wxChoice
 166 {
 167 public:
 168     wxComboBoxChoice( wxComboBox *cb, int style )
 169         : wxChoice( cb , 1 , wxDefaultPosition , wxDefaultSize , 0 , NULL , style & (wxCB_SORT) )
 170     {
 171         m_cb = cb;
 172     }
 173
 174     int GetPopupWidth() const
 175     {
 176         switch ( GetWindowVariant() )
 177         {
 178             case wxWINDOW_VARIANT_NORMAL :
 179             case wxWINDOW_VARIANT_LARGE :
 180                 return 24 ;
 181
 182             default :
 183                 return 21 ;
 184         }
 185     }
 186
 187 protected:
 188     void OnChoice( wxCommandEvent& e )
 189     {
 190         wxString    s = e.GetString();
 191
 192         m_cb->DelegateChoice( s );
 193         wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 194         event2.SetInt(m_cb->GetSelection());
 195         event2.SetEventObject(m_cb);
 196         event2.SetString(m_cb->GetStringSelection());
 197         m_cb->ProcessCommand(event2);
 198
 199         // For consistency with MSW and GTK, also send a text updated event
 200         // After all, the text is updated when a selection is made
 201         wxCommandEvent TextEvent( wxEVT_COMMAND_TEXT_UPDATED, m_cb->GetId() );
 202         TextEvent.SetString( m_cb->GetStringSelection() );
 203         TextEvent.SetEventObject( m_cb );
 204         m_cb->ProcessCommand( TextEvent );
 205     }
 206
 207     virtual wxSize DoGetBestSize() const
 208     {
 209         wxSize sz = wxChoice::DoGetBestSize() ;
 210         if (! m_cb->HasFlag(wxCB_READONLY) )
 211             sz.x = GetPopupWidth() ;
 212
 213         return sz ;
 214     }
 215
 216 private:
 217     wxComboBox *m_cb;
 218
 219     friend class wxComboBox;
 220
 221     DECLARE_EVENT_TABLE()
 222 };
 223
 224 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 225     EVT_CHOICE(wxID_ANY, wxComboBoxChoice::OnChoice)
 226 END_EVENT_TABLE()
 227
 228 wxComboBox::~wxComboBox()
 229 {
 230     // delete the controls now, don't leave them alive even though they would
 231     // still be eventually deleted by our parent - but it will be too late, the
 232     // user code expects them to be gone now
 233     if (m_text != NULL)
 234     {
 235         delete m_text;
 236         m_text = NULL;
 237     }
 238
 239     if (m_choice != NULL)
 240     {
 241         delete m_choice;
 242         m_choice = NULL;
 243     }
 244 }
 245
 246 // ----------------------------------------------------------------------------
 247 // geometry
 248 // ----------------------------------------------------------------------------
 249
 250 wxSize wxComboBox::DoGetBestSize() const
 251 {
 252     if (!m_choice && !m_text)
 253         return GetSize();
 254
 255     wxSize size = m_choice->GetBestSize();
 256
 257     if ( m_text != NULL )
 258     {
 259         wxSize  sizeText = m_text->GetBestSize();
 260         if (sizeText.y > size.y)
 261             size.y = sizeText.y;
 262
 263         size.x = m_choice->GetPopupWidth() + sizeText.x + MARGIN;
 264         size.x += TEXTFOCUSBORDER ;
 265         size.y += 2 * TEXTFOCUSBORDER ;
 266     }
 267     else
 268     {
 269         // clipping is too tight
 270         size.y += 1 ;
 271     }
 272
 273     return size;
 274 }
 275
 276 void wxComboBox::DoMoveWindow(int x, int y, int width, int height)
 277 {
 278     wxControl::DoMoveWindow( x, y, width , height );
 279
 280     if ( m_text == NULL )
 281     {
 282         // we might not be fully constructed yet, therefore watch out...
 283         if ( m_choice )
 284             m_choice->SetSize(0, 0 , width, -1);
 285     }
 286     else
 287     {
 288         wxCoord wText = width - m_choice->GetPopupWidth() - MARGIN;
 289         m_text->SetSize(TEXTFOCUSBORDER, TEXTFOCUSBORDER, wText, -1);
 290
 291         // put it at an inset of 1 to have outer area shadows drawn as well
 292         m_choice->SetSize(TEXTFOCUSBORDER + wText + MARGIN - 1 , TEXTFOCUSBORDER, m_choice->GetPopupWidth() , -1);
 293     }
 294 }
 295
 296 // ----------------------------------------------------------------------------
 297 // operations forwarded to the subcontrols
 298 // ----------------------------------------------------------------------------
 299
 300 bool wxComboBox::Enable(bool enable)
 301 {
 302     if ( !wxControl::Enable(enable) )
 303         return false;
 304
 305     if (m_text)
 306         m_text->Enable(enable);
 307
 308     return true;
 309 }
 310
 311 bool wxComboBox::Show(bool show)
 312 {
 313     if ( !wxControl::Show(show) )
 314         return false;
 315
 316     return true;
 317 }
 318
 319 void wxComboBox::DelegateTextChanged( const wxString& value )
 320 {
 321     SetStringSelection( value );
 322 }
 323
 324 void wxComboBox::DelegateChoice( const wxString& value )
 325 {
 326     SetStringSelection( value );
 327 }
 328
 329 void wxComboBox::Init()
 330 {
 331     WX_INIT_CONTROL_CONTAINER();
 332 }
 333
 334 bool wxComboBox::Create(wxWindow *parent,
 335     wxWindowID id,
 336     const wxString& value,
 337     const wxPoint& pos,
 338     const wxSize& size,
 339     const wxArrayString& choices,
 340     long style,
 341     const wxValidator& validator,
 342     const wxString& name)
 343 {
 344     if ( !Create( parent, id, value, pos, size, 0, NULL,
 345                    style, validator, name ) )
 346         return false;
 347
 348     Append(choices);
 349
 350     return true;
 351 }
 352
 353 bool wxComboBox::Create(wxWindow *parent,
 354     wxWindowID id,
 355     const wxString& value,
 356     const wxPoint& pos,
 357     const wxSize& size,
 358     int n,
 359     const wxString choices[],
 360     long style,
 361     const wxValidator& validator,
 362     const wxString& name)
 363 {
 364     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 365                             validator, name) )
 366     {
 367         return false;
 368     }
 369
 370     wxSize csize = size;
 371     if ( style & wxCB_READONLY )
 372     {
 373         m_text = NULL;
 374     }
 375     else
 376     {
 377         m_text = new wxComboBoxText(this);
 378         if ( size.y == -1 )
 379         {
 380             csize.y = m_text->GetSize().y ;
 381             csize.y += 2 * TEXTFOCUSBORDER ;
 382         }
 383     }
 384     m_choice = new wxComboBoxChoice(this, style );
 385
 386     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 387
 388     Append( n, choices );
 389
 390     // Needed because it is a wxControlWithItems
 391     SetInitialSize(size);
 392     SetStringSelection(value);
 393
 394     return true;
 395 }
 396
 397 wxString wxComboBox::GetValue() const
 398 {
 399     wxString        result;
 400
 401     if ( m_text == NULL )
 402         result = m_choice->GetString( m_choice->GetSelection() );
 403     else
 404         result = m_text->GetValue();
 405
 406     return result;
 407 }
 408
 409 unsigned int wxComboBox::GetCount() const
 410 {
 411     return m_choice->GetCount() ;
 412 }
 413
 414 void wxComboBox::SetValue(const wxString& value)
 415 {
 416     if ( HasFlag(wxCB_READONLY) )
 417         SetStringSelection( value ) ;
 418     else
 419         m_text->SetValue( value );
 420 }
 421
 422 void wxComboBox::WriteText(const wxString& text)
 423 {
 424     m_text->WriteText(text);
 425 }
 426
 427 void wxComboBox::GetSelection(long *from, long *to) const
 428 {
 429     m_text->GetSelection(from, to);
 430 }
 431
 432 // Clipboard operations
 433
 434 void wxComboBox::Copy()
 435 {
 436     if ( m_text != NULL )
 437         m_text->Copy();
 438 }
 439
 440 void wxComboBox::Cut()
 441 {
 442     if ( m_text != NULL )
 443         m_text->Cut();
 444 }
 445
 446 void wxComboBox::Paste()
 447 {
 448     if ( m_text != NULL )
 449         m_text->Paste();
 450 }
 451
 452 void wxComboBox::SetEditable(bool editable)
 453 {
 454     if ( ( m_text == NULL ) && editable )
 455     {
 456         m_text = new wxComboBoxText( this );
 457     }
 458     else if ( ( m_text != NULL ) && !editable )
 459     {
 460         delete m_text;
 461         m_text = NULL;
 462     }
 463
 464     int currentX, currentY;
 465     GetPosition( &currentX, &currentY );
 466
 467     int currentW, currentH;
 468     GetSize( &currentW, &currentH );
 469
 470     DoMoveWindow( currentX, currentY, currentW, currentH );
 471 }
 472
 473 void wxComboBox::SetInsertionPoint(long pos)
 474 {
 475     if ( m_text )
 476         m_text->SetInsertionPoint(pos);
 477 }
 478
 479 void wxComboBox::SetInsertionPointEnd()
 480 {
 481     if ( m_text )
 482         m_text->SetInsertionPointEnd();
 483 }
 484
 485 long wxComboBox::GetInsertionPoint() const
 486 {
 487     if ( m_text )
 488         return m_text->GetInsertionPoint();
 489     return 0;
 490 }
 491
 492 wxTextPos wxComboBox::GetLastPosition() const
 493 {
 494     if ( m_text )
 495         return m_text->GetLastPosition();
 496     return 0;
 497 }
 498
 499 void wxComboBox::Replace(long from, long to, const wxString& value)
 500 {
 501     if ( m_text )
 502         m_text->Replace(from,to,value);
 503 }
 504
 505 void wxComboBox::Remove(long from, long to)
 506 {
 507     if ( m_text )
 508         m_text->Remove(from,to);
 509 }
 510
 511 void wxComboBox::SetSelection(long from, long to)
 512 {
 513     if ( m_text )
 514         m_text->SetSelection(from,to);
 515 }
 516
 517 int wxComboBox::DoInsertItems(const wxArrayStringsAdapter& items,
 518                               unsigned int pos,
 519                               void **clientData,
 520                               wxClientDataType type)
 521 {
 522     return m_choice->DoInsertItems(items, pos, clientData, type);
 523 }
 524
 525 void wxComboBox::DoSetItemClientData(unsigned int n, void* clientData)
 526 {
 527     return m_choice->DoSetItemClientData( n , clientData ) ;
 528 }
 529
 530 void* wxComboBox::DoGetItemClientData(unsigned int n) const
 531 {
 532     return m_choice->DoGetItemClientData( n ) ;
 533 }
 534
 535 wxClientDataType wxComboBox::GetClientDataType() const
 536 {
 537     return m_choice->GetClientDataType();
 538 }
 539
 540 void wxComboBox::SetClientDataType(wxClientDataType clientDataItemsType)
 541 {
 542     m_choice->SetClientDataType(clientDataItemsType);
 543 }
 544
 545 void wxComboBox::DoDeleteOneItem(unsigned int n)
 546 {
 547     m_choice->DoDeleteOneItem( n );
 548 }
 549
 550 void wxComboBox::DoClear()
 551 {
 552     m_choice->DoClear();
 553 }
 554
 555 int wxComboBox::GetSelection() const
 556 {
 557     return m_choice->GetSelection();
 558 }
 559
 560 void wxComboBox::SetSelection(int n)
 561 {
 562     m_choice->SetSelection( n );
 563
 564     if ( m_text != NULL )
 565         m_text->SetValue(n != wxNOT_FOUND ? GetString(n) : wxString(wxEmptyString));
 566 }
 567
 568 int wxComboBox::FindString(const wxString& s, bool bCase) const
 569 {
 570     return m_choice->FindString( s, bCase );
 571 }
 572
 573 wxString wxComboBox::GetString(unsigned int n) const
 574 {
 575     return m_choice->GetString( n );
 576 }
 577
 578 wxString wxComboBox::GetStringSelection() const
 579 {
 580     int sel = GetSelection();
 581     if (sel != wxNOT_FOUND)
 582         return wxString(this->GetString((unsigned int)sel));
 583     else
 584         return wxEmptyString;
 585 }
 586
 587 void wxComboBox::SetString(unsigned int n, const wxString& s)
 588 {
 589     m_choice->SetString( n , s );
 590 }
 591
 592 bool wxComboBox::IsEditable() const
 593 {
 594     return m_text != NULL && !HasFlag(wxCB_READONLY);
 595 }
 596
 597 void wxComboBox::Undo()
 598 {
 599     if (m_text != NULL)
 600         m_text->Undo();
 601 }
 602
 603 void wxComboBox::Redo()
 604 {
 605     if (m_text != NULL)
 606         m_text->Redo();
 607 }
 608
 609 void wxComboBox::SelectAll()
 610 {
 611     if (m_text != NULL)
 612         m_text->SelectAll();
 613 }
 614
 615 bool wxComboBox::CanCopy() const
 616 {
 617     if (m_text != NULL)
 618         return m_text->CanCopy();
 619     else
 620         return false;
 621 }
 622
 623 bool wxComboBox::CanCut() const
 624 {
 625     if (m_text != NULL)
 626         return m_text->CanCut();
 627     else
 628         return false;
 629 }
 630
 631 bool wxComboBox::CanPaste() const
 632 {
 633     if (m_text != NULL)
 634         return m_text->CanPaste();
 635     else
 636         return false;
 637 }
 638
 639 bool wxComboBox::CanUndo() const
 640 {
 641     if (m_text != NULL)
 642         return m_text->CanUndo();
 643     else
 644         return false;
 645 }
 646
 647 bool wxComboBox::CanRedo() const
 648 {
 649     if (m_text != NULL)
 650         return m_text->CanRedo();
 651     else
 652         return false;
 653 }
 654
 655 bool wxComboBox::HandleClicked( double timestampsec )
 656 {
 657 /*
 658     For consistency with other platforms, clicking in the text area does not constitute a selection
 659     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 660     event.SetInt(GetSelection());
 661     event.SetEventObject(this);
 662     event.SetString(GetStringSelection());
 663     ProcessCommand(event);
 664 */
 665
 666     return true ;
 667 }
 668
 669 #endif // wxUSE_COMBOBOX