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 #endif
  23
  24 #include "wx/mac/uma.h"
  25
  26 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  27
  28 WX_DELEGATE_TO_CONTROL_CONTAINER(wxComboBox)
  29
  30 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
  31     WX_EVENT_TABLE_CONTROL_CONTAINER(wxComboBox)
  32 END_EVENT_TABLE()
  33
  34
  35 static int nextPopUpMenuId = 1000 ;
  36
  37 MenuHandle NewUniqueMenu()
  38 {
  39     MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" ) ;
  40     nextPopUpMenuId++ ;
  41
  42     return handle ;
  43 }
  44
  45
  46 // ----------------------------------------------------------------------------
  47 // constants
  48 // ----------------------------------------------------------------------------
  49
  50 // the margin between the text control and the choice
  51 #if TARGET_API_MAC_OSX
  52 // margin should be bigger on OS X due to blue highlight
  53 // around text control.
  54 static const wxCoord MARGIN = 4;
  55 // this is the border a focus rect on OSX is needing
  56 static const int    TEXTFOCUSBORDER = 3 ;
  57 #else
  58 static const wxCoord MARGIN = 2;
  59 static const int    TEXTFOCUSBORDER = 0 ;
  60 #endif
  61 static const int    POPUPHEIGHT = 23;
  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                 wxWindow *parent = GetParent();
 113                 while ( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL )
 114                     parent = parent->GetParent() ;
 115
 116                 if ( parent && parent->GetDefaultItem() )
 117                 {
 118                     wxButton *def = wxDynamicCast(parent->GetDefaultItem(), wxButton);
 119                     if ( def && def->IsEnabled() )
 120                     {
 121                         wxCommandEvent event( wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 122                         event.SetEventObject(def);
 123                         def->Command(event);
 124                    }
 125                 }
 126
 127                 return;
 128             }
 129         }
 130
 131         event.Skip();
 132     }
 133
 134     void OnKeyUp( wxKeyEvent& event )
 135     {
 136         event.SetEventObject(m_cb);
 137         event.SetId(m_cb->GetId());
 138         if (! m_cb->GetEventHandler()->ProcessEvent(event))
 139             event.Skip();
 140     }
 141
 142     void OnKeyDown( wxKeyEvent& event )
 143     {
 144         event.SetEventObject(m_cb);
 145         event.SetId(m_cb->GetId());
 146         if (! m_cb->GetEventHandler()->ProcessEvent(event))
 147             event.Skip();
 148     }
 149
 150     void OnText( wxCommandEvent& event )
 151     {
 152         event.SetEventObject(m_cb);
 153         event.SetId(m_cb->GetId());
 154         if (! m_cb->GetEventHandler()->ProcessEvent(event))
 155             event.Skip();
 156     }
 157
 158 private:
 159     wxComboBox *m_cb;
 160
 161     DECLARE_EVENT_TABLE()
 162 };
 163
 164 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
 165     EVT_KEY_DOWN(wxComboBoxText::OnKeyDown)
 166     EVT_CHAR(wxComboBoxText::OnChar)
 167     EVT_KEY_UP(wxComboBoxText::OnKeyUp)
 168     EVT_TEXT(wxID_ANY, wxComboBoxText::OnText)
 169 END_EVENT_TABLE()
 170
 171 class wxComboBoxChoice : public wxChoice
 172 {
 173 public:
 174     wxComboBoxChoice( wxComboBox *cb, int style )
 175         : wxChoice( cb , 1 , wxDefaultPosition , wxDefaultSize , 0 , NULL , style & (wxCB_SORT) )
 176     {
 177         m_cb = cb;
 178     }
 179
 180     int GetPopupWidth() const
 181     {
 182         switch ( GetWindowVariant() )
 183         {
 184             case wxWINDOW_VARIANT_NORMAL :
 185             case wxWINDOW_VARIANT_LARGE :
 186                 return 24 ;
 187
 188             default :
 189                 return 21 ;
 190         }
 191     }
 192
 193 protected:
 194     void OnChoice( wxCommandEvent& e )
 195     {
 196         wxString    s = e.GetString();
 197
 198         m_cb->DelegateChoice( s );
 199         wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 200         event2.SetInt(m_cb->GetSelection());
 201         event2.SetEventObject(m_cb);
 202         event2.SetString(m_cb->GetStringSelection());
 203         m_cb->ProcessCommand(event2);
 204
 205         // For consistency with MSW and GTK, also send a text updated event
 206         // After all, the text is updated when a selection is made
 207         wxCommandEvent TextEvent( wxEVT_COMMAND_TEXT_UPDATED, m_cb->GetId() );
 208         TextEvent.SetString( m_cb->GetStringSelection() );
 209         TextEvent.SetEventObject( m_cb );
 210         m_cb->ProcessCommand( TextEvent );
 211     }
 212
 213     virtual wxSize DoGetBestSize() const
 214     {
 215         wxSize sz = wxChoice::DoGetBestSize() ;
 216         if (! m_cb->HasFlag(wxCB_READONLY) )
 217             sz.x = GetPopupWidth() ;
 218
 219         return sz ;
 220     }
 221
 222 private:
 223     wxComboBox *m_cb;
 224
 225     friend class wxComboBox;
 226
 227     DECLARE_EVENT_TABLE()
 228 };
 229
 230 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 231     EVT_CHOICE(wxID_ANY, wxComboBoxChoice::OnChoice)
 232 END_EVENT_TABLE()
 233
 234 wxComboBox::~wxComboBox()
 235 {
 236     // delete client objects
 237     FreeData();
 238
 239     // delete the controls now, don't leave them alive even though they would
 240     // still be eventually deleted by our parent - but it will be too late, the
 241     // user code expects them to be gone now
 242     if (m_text != NULL)
 243     {
 244         delete m_text;
 245         m_text = NULL;
 246     }
 247
 248     if (m_choice != NULL)
 249     {
 250         delete m_choice;
 251         m_choice = NULL;
 252     }
 253 }
 254
 255 // ----------------------------------------------------------------------------
 256 // geometry
 257 // ----------------------------------------------------------------------------
 258
 259 wxSize wxComboBox::DoGetBestSize() const
 260 {
 261     if (!m_choice && !m_text)
 262         return GetSize();
 263
 264     wxSize size = m_choice->GetBestSize();
 265
 266     if ( m_text != NULL )
 267     {
 268         wxSize  sizeText = m_text->GetBestSize();
 269         if (sizeText.y > size.y)
 270             size.y = sizeText.y;
 271
 272         size.x = m_choice->GetPopupWidth() + sizeText.x + MARGIN;
 273         size.x += TEXTFOCUSBORDER ;
 274         size.y += 2 * TEXTFOCUSBORDER ;
 275     }
 276     else
 277     {
 278         // clipping is too tight
 279         size.y += 1 ;
 280     }
 281
 282     return size;
 283 }
 284
 285 void wxComboBox::DoMoveWindow(int x, int y, int width, int height)
 286 {
 287     wxControl::DoMoveWindow( x, y, width , height );
 288
 289     if ( m_text == NULL )
 290     {
 291         // we might not be fully constructed yet, therefore watch out...
 292         if ( m_choice )
 293             m_choice->SetSize(0, 0 , width, -1);
 294     }
 295     else
 296     {
 297         wxCoord wText = width - m_choice->GetPopupWidth() - MARGIN;
 298         m_text->SetSize(TEXTFOCUSBORDER, TEXTFOCUSBORDER, wText, -1);
 299
 300         // put it at an inset of 1 to have outer area shadows drawn as well
 301         m_choice->SetSize(TEXTFOCUSBORDER + wText + MARGIN - 1 , TEXTFOCUSBORDER, m_choice->GetPopupWidth() , -1);
 302     }
 303 }
 304
 305 // ----------------------------------------------------------------------------
 306 // operations forwarded to the subcontrols
 307 // ----------------------------------------------------------------------------
 308
 309 bool wxComboBox::Enable(bool enable)
 310 {
 311     if ( !wxControl::Enable(enable) )
 312         return false;
 313
 314     if (m_text)
 315         m_text->Enable(enable);
 316
 317     return true;
 318 }
 319
 320 bool wxComboBox::Show(bool show)
 321 {
 322     if ( !wxControl::Show(show) )
 323         return false;
 324
 325     return true;
 326 }
 327
 328 void wxComboBox::DelegateTextChanged( const wxString& value )
 329 {
 330     SetStringSelection( value );
 331 }
 332
 333 void wxComboBox::DelegateChoice( const wxString& value )
 334 {
 335     SetStringSelection( value );
 336 }
 337
 338 void wxComboBox::Init()
 339 {
 340     m_container.SetContainerWindow(this);
 341 }
 342
 343 bool wxComboBox::Create(wxWindow *parent,
 344     wxWindowID id,
 345     const wxString& value,
 346     const wxPoint& pos,
 347     const wxSize& size,
 348     const wxArrayString& choices,
 349     long style,
 350     const wxValidator& validator,
 351     const wxString& name)
 352 {
 353     wxCArrayString chs( choices );
 354
 355     return Create( parent, id, value, pos, size, chs.GetCount(),
 356                    chs.GetStrings(), style, validator, name );
 357 }
 358
 359 bool wxComboBox::Create(wxWindow *parent,
 360     wxWindowID id,
 361     const wxString& value,
 362     const wxPoint& pos,
 363     const wxSize& size,
 364     int n,
 365     const wxString choices[],
 366     long style,
 367     const wxValidator& validator,
 368     const wxString& name)
 369 {
 370     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 371                             validator, name) )
 372     {
 373         return false;
 374     }
 375
 376     m_choice = new wxComboBoxChoice(this, style );
 377     wxSize csize = size;
 378     if ( style & wxCB_READONLY )
 379     {
 380         m_text = NULL;
 381     }
 382     else
 383     {
 384         m_text = new wxComboBoxText(this);
 385         if ( size.y == -1 )
 386         {
 387             csize.y = m_text->GetSize().y ;
 388             csize.y += 2 * TEXTFOCUSBORDER ;
 389         }
 390     }
 391
 392     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 393
 394     for ( int i = 0 ; i < n ; i++ )
 395     {
 396         m_choice->DoAppend( choices[ i ] );
 397     }
 398
 399     // Needed because it is a wxControlWithItems
 400     SetBestSize(size);
 401     SetStringSelection(value);
 402
 403     return true;
 404 }
 405
 406 wxString wxComboBox::GetValue() const
 407 {
 408     wxString        result;
 409
 410     if ( m_text == NULL )
 411         result = m_choice->GetString( m_choice->GetSelection() );
 412     else
 413         result = m_text->GetValue();
 414
 415     return result;
 416 }
 417
 418 unsigned int wxComboBox::GetCount() const
 419 {
 420     return m_choice->GetCount() ;
 421 }
 422
 423 void wxComboBox::SetValue(const wxString& value)
 424 {
 425     if ( HasFlag(wxCB_READONLY) )
 426         SetStringSelection( value ) ;
 427     else
 428         m_text->SetValue( value );
 429 }
 430
 431 // Clipboard operations
 432
 433 void wxComboBox::Copy()
 434 {
 435     if ( m_text != NULL )
 436         m_text->Copy();
 437 }
 438
 439 void wxComboBox::Cut()
 440 {
 441     if ( m_text != NULL )
 442         m_text->Cut();
 443 }
 444
 445 void wxComboBox::Paste()
 446 {
 447     if ( m_text != NULL )
 448         m_text->Paste();
 449 }
 450
 451 void wxComboBox::SetEditable(bool editable)
 452 {
 453     if ( ( m_text == NULL ) && editable )
 454     {
 455         m_text = new wxComboBoxText( this );
 456     }
 457     else if ( ( m_text != NULL ) && !editable )
 458     {
 459         delete m_text;
 460         m_text = NULL;
 461     }
 462
 463     int currentX, currentY;
 464     GetPosition( &currentX, &currentY );
 465
 466     int currentW, currentH;
 467     GetSize( &currentW, &currentH );
 468
 469     DoMoveWindow( currentX, currentY, currentW, currentH );
 470 }
 471
 472 void wxComboBox::SetInsertionPoint(long pos)
 473 {
 474     // TODO
 475 }
 476
 477 void wxComboBox::SetInsertionPointEnd()
 478 {
 479     // TODO
 480 }
 481
 482 long wxComboBox::GetInsertionPoint() const
 483 {
 484     // TODO
 485     return 0;
 486 }
 487
 488 wxTextPos wxComboBox::GetLastPosition() const
 489 {
 490     // TODO
 491     return 0;
 492 }
 493
 494 void wxComboBox::Replace(long from, long to, const wxString& value)
 495 {
 496     // TODO
 497 }
 498
 499 void wxComboBox::Remove(long from, long to)
 500 {
 501     // TODO
 502 }
 503
 504 void wxComboBox::SetSelection(long from, long to)
 505 {
 506     // TODO
 507 }
 508
 509 int wxComboBox::DoAppend(const wxString& item)
 510 {
 511     return m_choice->DoAppend( item ) ;
 512 }
 513
 514 int wxComboBox::DoInsert(const wxString& item, unsigned int pos)
 515 {
 516     return m_choice->DoInsert( item , pos ) ;
 517 }
 518
 519 void wxComboBox::DoSetItemClientData(unsigned int n, void* clientData)
 520 {
 521     return m_choice->DoSetItemClientData( n , clientData ) ;
 522 }
 523
 524 void* wxComboBox::DoGetItemClientData(unsigned int n) const
 525 {
 526     return m_choice->DoGetItemClientData( n ) ;
 527 }
 528
 529 void wxComboBox::DoSetItemClientObject(unsigned int n, wxClientData* clientData)
 530 {
 531     return m_choice->DoSetItemClientObject(n, clientData);
 532 }
 533
 534 wxClientData* wxComboBox::DoGetItemClientObject(unsigned int n) const
 535 {
 536     return m_choice->DoGetItemClientObject( n ) ;
 537 }
 538
 539 void wxComboBox::FreeData()
 540 {
 541     if ( HasClientObjectData() )
 542     {
 543         unsigned int count = GetCount();
 544         for ( unsigned int n = 0; n < count; n++ )
 545         {
 546             SetClientObject( n, NULL );
 547         }
 548     }
 549 }
 550
 551 void wxComboBox::Delete(unsigned int n)
 552 {
 553     // force client object deletion
 554     if( HasClientObjectData() )
 555         SetClientObject( n, NULL );
 556     m_choice->Delete( n );
 557 }
 558
 559 void wxComboBox::Clear()
 560 {
 561     FreeData();
 562     m_choice->Clear();
 563 }
 564
 565 int wxComboBox::GetSelection() const
 566 {
 567     return m_choice->GetSelection();
 568 }
 569
 570 void wxComboBox::SetSelection(int n)
 571 {
 572     m_choice->SetSelection( n );
 573
 574     if ( m_text != NULL )
 575         m_text->SetValue(GetString(n));
 576 }
 577
 578 int wxComboBox::FindString(const wxString& s, bool bCase) const
 579 {
 580     return m_choice->FindString( s, bCase );
 581 }
 582
 583 wxString wxComboBox::GetString(unsigned int n) const
 584 {
 585     return m_choice->GetString( n );
 586 }
 587
 588 wxString wxComboBox::GetStringSelection() const
 589 {
 590     int sel = GetSelection();
 591     if (sel != wxNOT_FOUND)
 592         return wxString(this->GetString((unsigned int)sel));
 593     else
 594         return wxEmptyString;
 595 }
 596
 597 void wxComboBox::SetString(unsigned int n, const wxString& s)
 598 {
 599     m_choice->SetString( n , s );
 600 }
 601
 602 bool wxComboBox::IsEditable() const
 603 {
 604     return m_text != NULL && !HasFlag(wxCB_READONLY);
 605 }
 606
 607 void wxComboBox::Undo()
 608 {
 609     if (m_text != NULL)
 610         m_text->Undo();
 611 }
 612
 613 void wxComboBox::Redo()
 614 {
 615     if (m_text != NULL)
 616         m_text->Redo();
 617 }
 618
 619 void wxComboBox::SelectAll()
 620 {
 621     if (m_text != NULL)
 622         m_text->SelectAll();
 623 }
 624
 625 bool wxComboBox::CanCopy() const
 626 {
 627     if (m_text != NULL)
 628         return m_text->CanCopy();
 629     else
 630         return false;
 631 }
 632
 633 bool wxComboBox::CanCut() const
 634 {
 635     if (m_text != NULL)
 636         return m_text->CanCut();
 637     else
 638         return false;
 639 }
 640
 641 bool wxComboBox::CanPaste() const
 642 {
 643     if (m_text != NULL)
 644         return m_text->CanPaste();
 645     else
 646         return false;
 647 }
 648
 649 bool wxComboBox::CanUndo() const
 650 {
 651     if (m_text != NULL)
 652         return m_text->CanUndo();
 653     else
 654         return false;
 655 }
 656
 657 bool wxComboBox::CanRedo() const
 658 {
 659     if (m_text != NULL)
 660         return m_text->CanRedo();
 661     else
 662         return false;
 663 }
 664
 665 wxInt32 wxComboBox::MacControlHit( WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) )
 666 {
 667 /*
 668     For consistency with other platforms, clicking in the text area does not constitute a selection
 669     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 670     event.SetInt(GetSelection());
 671     event.SetEventObject(this);
 672     event.SetString(GetStringSelection());
 673     ProcessCommand(event);
 674 */
 675
 676     return noErr ;
 677 }
 678
 679 #endif // wxUSE_COMBOBOX