src/mac/carbon/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/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 #endif
  24
  25 #include "wx/mac/uma.h"
  26
  27 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  28
  29 WX_DELEGATE_TO_CONTROL_CONTAINER(wxComboBox, wxControl)
  30
  31 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
  32     WX_EVENT_TABLE_CONTROL_CONTAINER(wxComboBox)
  33 END_EVENT_TABLE()
  34
  35
  36 static int nextPopUpMenuId = 1000 ;
  37
  38 MenuHandle NewUniqueMenu()
  39 {
  40     MenuHandle handle = UMANewMenu(nextPopUpMenuId, wxString(wxT("Menu")), wxFont::GetDefaultEncoding() );
  41     nextPopUpMenuId++ ;
  42
  43     return handle ;
  44 }
  45
  46
  47 // ----------------------------------------------------------------------------
  48 // constants
  49 // ----------------------------------------------------------------------------
  50
  51 // the margin between the text control and the choice
  52 #if TARGET_API_MAC_OSX
  53 // margin should be bigger on OS X due to blue highlight
  54 // around text control.
  55 static const wxCoord MARGIN = 4;
  56 // this is the border a focus rect on OSX is needing
  57 static const int    TEXTFOCUSBORDER = 3 ;
  58 #else
  59 static const wxCoord MARGIN = 2;
  60 static const int    TEXTFOCUSBORDER = 0 ;
  61 #endif
  62
  63
  64 // ----------------------------------------------------------------------------
  65 // wxComboBoxText: text control forwards events to combobox
  66 // ----------------------------------------------------------------------------
  67
  68 class wxComboBoxText : public wxTextCtrl
  69 {
  70 public:
  71     wxComboBoxText( wxComboBox * cb )
  72         : wxTextCtrl( cb , 1 )
  73     {
  74         m_cb = cb;
  75         SetTriggerOnSetValue( false );
  76     }
  77
  78 protected:
  79     void OnChar( wxKeyEvent& event )
  80     {
  81         // Allows processing the tab key to go to the next control
  82         if (event.GetKeyCode() == WXK_TAB)
  83         {
  84             wxNavigationKeyEvent NavEvent;
  85             NavEvent.SetEventObject(this);
  86             NavEvent.SetDirection(true);
  87             NavEvent.SetWindowChange(false);
  88
  89             // Get the parent of the combo and have it process the navigation?
  90             if (m_cb->GetParent()->GetEventHandler()->ProcessEvent(NavEvent))
  91                     return;
  92         }
  93
  94         // send the event to the combobox class in case the user has bound EVT_CHAR
  95         wxKeyEvent kevt(event);
  96         kevt.SetEventObject(m_cb);
  97         if (m_cb->GetEventHandler()->ProcessEvent(kevt))
  98             // If the event was handled and not skipped then we're done
  99             return;
 100
 101         if ( event.GetKeyCode() == WXK_RETURN )
 102         {
 103             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_cb->GetId());
 104             event.SetString( GetValue() );
 105             event.SetInt( m_cb->GetSelection() );
 106             event.SetEventObject( m_cb );
 107
 108             // This will invoke the dialog default action,
 109             // such as the clicking the default button.
 110             if (!m_cb->GetEventHandler()->ProcessEvent( event ))
 111             {
 112                 wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
 113                 if ( tlw && tlw->GetDefaultItem() )
 114                 {
 115                     wxButton *def = wxDynamicCast(tlw->GetDefaultItem(), wxButton);
 116                     if ( def && def->IsEnabled() )
 117                     {
 118                         wxCommandEvent event( wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 119                         event.SetEventObject(def);
 120                         def->Command(event);
 121                     }
 122                 }
 123
 124                 return;
 125             }
 126         }
 127
 128         event.Skip();
 129     }
 130
 131     void OnKeyUp( wxKeyEvent& event )
 132     {
 133         event.SetEventObject(m_cb);
 134         event.SetId(m_cb->GetId());
 135         if (! m_cb->GetEventHandler()->ProcessEvent(event))
 136             event.Skip();
 137     }
 138
 139     void OnKeyDown( wxKeyEvent& event )
 140     {
 141         event.SetEventObject(m_cb);
 142         event.SetId(m_cb->GetId());
 143         if (! m_cb->GetEventHandler()->ProcessEvent(event))
 144             event.Skip();
 145     }
 146
 147     void OnText( wxCommandEvent& event )
 148     {
 149         event.SetEventObject(m_cb);
 150         event.SetId(m_cb->GetId());
 151         if (! m_cb->GetEventHandler()->ProcessEvent(event))
 152             event.Skip();
 153     }
 154
 155 private:
 156     wxComboBox *m_cb;
 157
 158     DECLARE_EVENT_TABLE()
 159 };
 160
 161 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
 162     EVT_KEY_DOWN(wxComboBoxText::OnKeyDown)
 163     EVT_CHAR(wxComboBoxText::OnChar)
 164     EVT_KEY_UP(wxComboBoxText::OnKeyUp)
 165     EVT_TEXT(wxID_ANY, wxComboBoxText::OnText)
 166 END_EVENT_TABLE()
 167
 168 class wxComboBoxChoice : public wxChoice
 169 {
 170 public:
 171     wxComboBoxChoice( wxComboBox *cb, int style )
 172         : wxChoice( cb , 1 , wxDefaultPosition , wxDefaultSize , 0 , NULL , style & (wxCB_SORT) )
 173     {
 174         m_cb = cb;
 175     }
 176
 177     int GetPopupWidth() const
 178     {
 179         switch ( GetWindowVariant() )
 180         {
 181             case wxWINDOW_VARIANT_NORMAL :
 182             case wxWINDOW_VARIANT_LARGE :
 183                 return 24 ;
 184
 185             default :
 186                 return 21 ;
 187         }
 188     }
 189
 190 protected:
 191     void OnChoice( wxCommandEvent& e )
 192     {
 193         wxString    s = e.GetString();
 194
 195         m_cb->DelegateChoice( s );
 196         wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 197         event2.SetInt(m_cb->GetSelection());
 198         event2.SetEventObject(m_cb);
 199         event2.SetString(m_cb->GetStringSelection());
 200         m_cb->ProcessCommand(event2);
 201
 202         // For consistency with MSW and GTK, also send a text updated event
 203         // After all, the text is updated when a selection is made
 204         wxCommandEvent TextEvent( wxEVT_COMMAND_TEXT_UPDATED, m_cb->GetId() );
 205         TextEvent.SetString( m_cb->GetStringSelection() );
 206         TextEvent.SetEventObject( m_cb );
 207         m_cb->ProcessCommand( TextEvent );
 208     }
 209
 210     virtual wxSize DoGetBestSize() const
 211     {
 212         wxSize sz = wxChoice::DoGetBestSize() ;
 213         if (! m_cb->HasFlag(wxCB_READONLY) )
 214             sz.x = GetPopupWidth() ;
 215
 216         return sz ;
 217     }
 218
 219 private:
 220     wxComboBox *m_cb;
 221
 222     friend class wxComboBox;
 223
 224     DECLARE_EVENT_TABLE()
 225 };
 226
 227 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 228     EVT_CHOICE(wxID_ANY, wxComboBoxChoice::OnChoice)
 229 END_EVENT_TABLE()
 230
 231 wxComboBox::~wxComboBox()
 232 {
 233     // delete client objects
 234     FreeData();
 235
 236     // delete the controls now, don't leave them alive even though they would
 237     // still be eventually deleted by our parent - but it will be too late, the
 238     // user code expects them to be gone now
 239     if (m_text != NULL)
 240     {
 241         delete m_text;
 242         m_text = NULL;
 243     }
 244
 245     if (m_choice != NULL)
 246     {
 247         delete m_choice;
 248         m_choice = NULL;
 249     }
 250 }
 251
 252 // ----------------------------------------------------------------------------
 253 // geometry
 254 // ----------------------------------------------------------------------------
 255
 256 wxSize wxComboBox::DoGetBestSize() const
 257 {
 258     if (!m_choice && !m_text)
 259         return GetSize();
 260
 261     wxSize size = m_choice->GetBestSize();
 262
 263     if ( m_text != NULL )
 264     {
 265         wxSize  sizeText = m_text->GetBestSize();
 266         if (sizeText.y > size.y)
 267             size.y = sizeText.y;
 268
 269         size.x = m_choice->GetPopupWidth() + sizeText.x + MARGIN;
 270         size.x += TEXTFOCUSBORDER ;
 271         size.y += 2 * TEXTFOCUSBORDER ;
 272     }
 273     else
 274     {
 275         // clipping is too tight
 276         size.y += 1 ;
 277     }
 278
 279     return size;
 280 }
 281
 282 void wxComboBox::DoMoveWindow(int x, int y, int width, int height)
 283 {
 284     wxControl::DoMoveWindow( x, y, width , height );
 285
 286     if ( m_text == NULL )
 287     {
 288         // we might not be fully constructed yet, therefore watch out...
 289         if ( m_choice )
 290             m_choice->SetSize(0, 0 , width, -1);
 291     }
 292     else
 293     {
 294         wxCoord wText = width - m_choice->GetPopupWidth() - MARGIN;
 295         m_text->SetSize(TEXTFOCUSBORDER, TEXTFOCUSBORDER, wText, -1);
 296
 297         // put it at an inset of 1 to have outer area shadows drawn as well
 298         m_choice->SetSize(TEXTFOCUSBORDER + wText + MARGIN - 1 , TEXTFOCUSBORDER, m_choice->GetPopupWidth() , -1);
 299     }
 300 }
 301
 302 // ----------------------------------------------------------------------------
 303 // operations forwarded to the subcontrols
 304 // ----------------------------------------------------------------------------
 305
 306 bool wxComboBox::Enable(bool enable)
 307 {
 308     if ( !wxControl::Enable(enable) )
 309         return false;
 310
 311     if (m_text)
 312         m_text->Enable(enable);
 313
 314     return true;
 315 }
 316
 317 bool wxComboBox::Show(bool show)
 318 {
 319     if ( !wxControl::Show(show) )
 320         return false;
 321
 322     return true;
 323 }
 324
 325 void wxComboBox::DelegateTextChanged( const wxString& value )
 326 {
 327     SetStringSelection( value );
 328 }
 329
 330 void wxComboBox::DelegateChoice( const wxString& value )
 331 {
 332     SetStringSelection( value );
 333 }
 334
 335 void wxComboBox::Init()
 336 {
 337     WX_INIT_CONTROL_CONTAINER();
 338 }
 339
 340 bool wxComboBox::Create(wxWindow *parent,
 341     wxWindowID id,
 342     const wxString& value,
 343     const wxPoint& pos,
 344     const wxSize& size,
 345     const wxArrayString& choices,
 346     long style,
 347     const wxValidator& validator,
 348     const wxString& name)
 349 {
 350     wxCArrayString chs( choices );
 351
 352     return Create( parent, id, value, pos, size, chs.GetCount(),
 353                    chs.GetStrings(), style, validator, name );
 354 }
 355
 356 bool wxComboBox::Create(wxWindow *parent,
 357     wxWindowID id,
 358     const wxString& value,
 359     const wxPoint& pos,
 360     const wxSize& size,
 361     int n,
 362     const wxString choices[],
 363     long style,
 364     const wxValidator& validator,
 365     const wxString& name)
 366 {
 367     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 368                             validator, name) )
 369     {
 370         return false;
 371     }
 372
 373     m_choice = new wxComboBoxChoice(this, style );
 374     wxSize csize = size;
 375     if ( style & wxCB_READONLY )
 376     {
 377         m_text = NULL;
 378     }
 379     else
 380     {
 381         m_text = new wxComboBoxText(this);
 382         if ( size.y == -1 )
 383         {
 384             csize.y = m_text->GetSize().y ;
 385             csize.y += 2 * TEXTFOCUSBORDER ;
 386         }
 387     }
 388
 389     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 390
 391     for ( int i = 0 ; i < n ; i++ )
 392     {
 393         m_choice->DoAppend( choices[ i ] );
 394     }
 395
 396     // Needed because it is a wxControlWithItems
 397     SetInitialSize(size);
 398     SetStringSelection(value);
 399
 400     return true;
 401 }
 402
 403 wxString wxComboBox::GetValue() const
 404 {
 405     wxString        result;
 406
 407     if ( m_text == NULL )
 408         result = m_choice->GetString( m_choice->GetSelection() );
 409     else
 410         result = m_text->GetValue();
 411
 412     return result;
 413 }
 414
 415 unsigned int wxComboBox::GetCount() const
 416 {
 417     return m_choice->GetCount() ;
 418 }
 419
 420 void wxComboBox::SetValue(const wxString& value)
 421 {
 422     if ( HasFlag(wxCB_READONLY) )
 423         SetStringSelection( value ) ;
 424     else
 425         m_text->SetValue( value );
 426 }
 427
 428 // Clipboard operations
 429
 430 void wxComboBox::Copy()
 431 {
 432     if ( m_text != NULL )
 433         m_text->Copy();
 434 }
 435
 436 void wxComboBox::Cut()
 437 {
 438     if ( m_text != NULL )
 439         m_text->Cut();
 440 }
 441
 442 void wxComboBox::Paste()
 443 {
 444     if ( m_text != NULL )
 445         m_text->Paste();
 446 }
 447
 448 void wxComboBox::SetEditable(bool editable)
 449 {
 450     if ( ( m_text == NULL ) && editable )
 451     {
 452         m_text = new wxComboBoxText( this );
 453     }
 454     else if ( ( m_text != NULL ) && !editable )
 455     {
 456         delete m_text;
 457         m_text = NULL;
 458     }
 459
 460     int currentX, currentY;
 461     GetPosition( &currentX, &currentY );
 462
 463     int currentW, currentH;
 464     GetSize( &currentW, &currentH );
 465
 466     DoMoveWindow( currentX, currentY, currentW, currentH );
 467 }
 468
 469 void wxComboBox::SetInsertionPoint(long pos)
 470 {
 471     if ( m_text )
 472         m_text->SetInsertionPoint(pos);
 473 }
 474
 475 void wxComboBox::SetInsertionPointEnd()
 476 {
 477     if ( m_text )
 478         m_text->SetInsertionPointEnd();
 479 }
 480
 481 long wxComboBox::GetInsertionPoint() const
 482 {
 483     if ( m_text )
 484         return m_text->GetInsertionPoint();
 485     return 0;
 486 }
 487
 488 wxTextPos wxComboBox::GetLastPosition() const
 489 {
 490     if ( m_text )
 491         return m_text->GetLastPosition();
 492     return 0;
 493 }
 494
 495 void wxComboBox::Replace(long from, long to, const wxString& value)
 496 {
 497     if ( m_text )
 498         m_text->Replace(from,to,value);
 499 }
 500
 501 void wxComboBox::Remove(long from, long to)
 502 {
 503     if ( m_text )
 504         m_text->Remove(from,to);
 505 }
 506
 507 void wxComboBox::SetSelection(long from, long to)
 508 {
 509     if ( m_text )
 510         m_text->SetSelection(from,to);
 511 }
 512
 513 int wxComboBox::DoAppend(const wxString& item)
 514 {
 515     return m_choice->DoAppend( item ) ;
 516 }
 517
 518 int wxComboBox::DoInsert(const wxString& item, unsigned int pos)
 519 {
 520     return m_choice->DoInsert( item , pos ) ;
 521 }
 522
 523 void wxComboBox::DoSetItemClientData(unsigned int n, void* clientData)
 524 {
 525     return m_choice->DoSetItemClientData( n , clientData ) ;
 526 }
 527
 528 void* wxComboBox::DoGetItemClientData(unsigned int n) const
 529 {
 530     return m_choice->DoGetItemClientData( n ) ;
 531 }
 532
 533 void wxComboBox::DoSetItemClientObject(unsigned int n, wxClientData* clientData)
 534 {
 535     return m_choice->DoSetItemClientObject(n, clientData);
 536 }
 537
 538 wxClientData* wxComboBox::DoGetItemClientObject(unsigned int n) const
 539 {
 540     return m_choice->DoGetItemClientObject( n ) ;
 541 }
 542
 543 void wxComboBox::FreeData()
 544 {
 545     if ( HasClientObjectData() )
 546     {
 547         unsigned int count = GetCount();
 548         for ( unsigned int n = 0; n < count; n++ )
 549         {
 550             SetClientObject( n, NULL );
 551         }
 552     }
 553 }
 554
 555 void wxComboBox::Delete(unsigned int n)
 556 {
 557     // force client object deletion
 558     if( HasClientObjectData() )
 559         SetClientObject( n, NULL );
 560     m_choice->Delete( n );
 561 }
 562
 563 void wxComboBox::Clear()
 564 {
 565     FreeData();
 566     m_choice->Clear();
 567 }
 568
 569 int wxComboBox::GetSelection() const
 570 {
 571     return m_choice->GetSelection();
 572 }
 573
 574 void wxComboBox::SetSelection(int n)
 575 {
 576     m_choice->SetSelection( n );
 577
 578     if ( m_text != NULL )
 579         m_text->SetValue(GetString(n));
 580 }
 581
 582 int wxComboBox::FindString(const wxString& s, bool bCase) const
 583 {
 584     return m_choice->FindString( s, bCase );
 585 }
 586
 587 wxString wxComboBox::GetString(unsigned int n) const
 588 {
 589     return m_choice->GetString( n );
 590 }
 591
 592 wxString wxComboBox::GetStringSelection() const
 593 {
 594     int sel = GetSelection();
 595     if (sel != wxNOT_FOUND)
 596         return wxString(this->GetString((unsigned int)sel));
 597     else
 598         return wxEmptyString;
 599 }
 600
 601 void wxComboBox::SetString(unsigned int n, const wxString& s)
 602 {
 603     m_choice->SetString( n , s );
 604 }
 605
 606 bool wxComboBox::IsEditable() const
 607 {
 608     return m_text != NULL && !HasFlag(wxCB_READONLY);
 609 }
 610
 611 void wxComboBox::Undo()
 612 {
 613     if (m_text != NULL)
 614         m_text->Undo();
 615 }
 616
 617 void wxComboBox::Redo()
 618 {
 619     if (m_text != NULL)
 620         m_text->Redo();
 621 }
 622
 623 void wxComboBox::SelectAll()
 624 {
 625     if (m_text != NULL)
 626         m_text->SelectAll();
 627 }
 628
 629 bool wxComboBox::CanCopy() const
 630 {
 631     if (m_text != NULL)
 632         return m_text->CanCopy();
 633     else
 634         return false;
 635 }
 636
 637 bool wxComboBox::CanCut() const
 638 {
 639     if (m_text != NULL)
 640         return m_text->CanCut();
 641     else
 642         return false;
 643 }
 644
 645 bool wxComboBox::CanPaste() const
 646 {
 647     if (m_text != NULL)
 648         return m_text->CanPaste();
 649     else
 650         return false;
 651 }
 652
 653 bool wxComboBox::CanUndo() const
 654 {
 655     if (m_text != NULL)
 656         return m_text->CanUndo();
 657     else
 658         return false;
 659 }
 660
 661 bool wxComboBox::CanRedo() const
 662 {
 663     if (m_text != NULL)
 664         return m_text->CanRedo();
 665     else
 666         return false;
 667 }
 668
 669 wxInt32 wxComboBox::MacControlHit( WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) )
 670 {
 671 /*
 672     For consistency with other platforms, clicking in the text area does not constitute a selection
 673     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 674     event.SetInt(GetSelection());
 675     event.SetEventObject(this);
 676     event.SetString(GetStringSelection());
 677     ProcessCommand(event);
 678 */
 679
 680     return noErr ;
 681 }
 682
 683 #endif // wxUSE_COMBOBOX