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 #include "wx/button.h"
  18 #include "wx/menu.h"
  19 #include "wx/containr.h"
  20 #include "wx/mac/uma.h"
  21
  22 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  23
  24 WX_DELEGATE_TO_CONTROL_CONTAINER(wxComboBox)
  25
  26 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
  27     WX_EVENT_TABLE_CONTROL_CONTAINER(wxComboBox)
  28 END_EVENT_TABLE()
  29
  30
  31 static int nextPopUpMenuId = 1000 ;
  32
  33 MenuHandle NewUniqueMenu()
  34 {
  35     MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" ) ;
  36     nextPopUpMenuId++ ;
  37
  38     return handle ;
  39 }
  40
  41
  42 // ----------------------------------------------------------------------------
  43 // constants
  44 // ----------------------------------------------------------------------------
  45
  46 // the margin between the text control and the choice
  47 #if TARGET_API_MAC_OSX
  48 // margin should be bigger on OS X due to blue highlight
  49 // around text control.
  50 static const wxCoord MARGIN = 4;
  51 // this is the border a focus rect on OSX is needing
  52 static const int    TEXTFOCUSBORDER = 3 ;
  53 #else
  54 static const wxCoord MARGIN = 2;
  55 static const int    TEXTFOCUSBORDER = 0 ;
  56 #endif
  57 static const int    POPUPHEIGHT = 23;
  58
  59
  60 // ----------------------------------------------------------------------------
  61 // wxComboBoxText: text control forwards events to combobox
  62 // ----------------------------------------------------------------------------
  63
  64 class wxComboBoxText : public wxTextCtrl
  65 {
  66 public:
  67     wxComboBoxText( wxComboBox * cb )
  68         : wxTextCtrl( cb , 1 )
  69     {
  70         m_cb = cb;
  71     }
  72
  73 protected:
  74     void OnChar( wxKeyEvent& event )
  75     {
  76         // Allows processing the tab key to go to the next control
  77         if (event.GetKeyCode() == WXK_TAB)
  78         {
  79             wxNavigationKeyEvent NavEvent;
  80             NavEvent.SetEventObject(this);
  81             NavEvent.SetDirection(true);
  82             NavEvent.SetWindowChange(false);
  83
  84             // Get the parent of the combo and have it process the navigation?
  85             if (m_cb->GetParent()->GetEventHandler()->ProcessEvent(NavEvent))
  86                     return;
  87         }
  88
  89         // send the event to the combobox class in case the user has bound EVT_CHAR
  90         wxKeyEvent kevt(event);
  91         kevt.SetEventObject(m_cb);
  92         if (m_cb->GetEventHandler()->ProcessEvent(kevt))
  93             // If the event was handled and not skipped then we're done
  94             return;
  95
  96         if ( event.GetKeyCode() == WXK_RETURN )
  97         {
  98             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_cb->GetId());
  99             event.SetString( GetValue() );
 100             event.SetInt( m_cb->GetSelection() );
 101             event.SetEventObject( m_cb );
 102
 103             // This will invoke the dialog default action,
 104             // such as the clicking the default button.
 105             if (!m_cb->GetEventHandler()->ProcessEvent( event ))
 106             {
 107                 wxWindow *parent = GetParent();
 108                 while ( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL )
 109                     parent = parent->GetParent() ;
 110
 111                 if ( parent && parent->GetDefaultItem() )
 112                 {
 113                     wxButton *def = wxDynamicCast(parent->GetDefaultItem(), wxButton);
 114                     if ( def && def->IsEnabled() )
 115                     {
 116                         wxCommandEvent event( wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 117                         event.SetEventObject(def);
 118                         def->Command(event);
 119                    }
 120                 }
 121
 122                 return;
 123             }
 124         }
 125
 126         event.Skip();
 127     }
 128
 129     void OnKeyUp( wxKeyEvent& event )
 130     {
 131         event.SetEventObject(m_cb);
 132         event.SetId(m_cb->GetId());
 133         if (! m_cb->GetEventHandler()->ProcessEvent(event))
 134             event.Skip();
 135     }
 136
 137     void OnKeyDown( wxKeyEvent& event )
 138     {
 139         event.SetEventObject(m_cb);
 140         event.SetId(m_cb->GetId());
 141         if (! m_cb->GetEventHandler()->ProcessEvent(event))
 142             event.Skip();
 143     }
 144
 145     void OnText( wxCommandEvent& event )
 146     {
 147         event.SetEventObject(m_cb);
 148         event.SetId(m_cb->GetId());
 149         if (! m_cb->GetEventHandler()->ProcessEvent(event))
 150             event.Skip();
 151     }
 152
 153 private:
 154     wxComboBox *m_cb;
 155
 156     DECLARE_EVENT_TABLE()
 157 };
 158
 159 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
 160     EVT_KEY_DOWN(wxComboBoxText::OnKeyDown)
 161     EVT_CHAR(wxComboBoxText::OnChar)
 162     EVT_KEY_UP(wxComboBoxText::OnKeyUp)
 163     EVT_TEXT(-1, wxComboBoxText::OnText)
 164 END_EVENT_TABLE()
 165
 166 class wxComboBoxChoice : public wxChoice
 167 {
 168 public:
 169     wxComboBoxChoice( wxComboBox *cb, int style )
 170         : wxChoice( cb , 1 , wxDefaultPosition , wxDefaultSize , 0 , NULL , style & (wxCB_SORT) )
 171     {
 172         m_cb = cb;
 173     }
 174
 175     int GetPopupWidth() const
 176     {
 177         switch ( GetWindowVariant() )
 178         {
 179             case wxWINDOW_VARIANT_NORMAL :
 180             case wxWINDOW_VARIANT_LARGE :
 181                 return 24 ;
 182
 183             default :
 184                 return 21 ;
 185         }
 186     }
 187
 188 protected:
 189     void OnChoice( wxCommandEvent& e )
 190     {
 191         wxString    s = e.GetString();
 192
 193         m_cb->DelegateChoice( s );
 194         wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 195         event2.SetInt(m_cb->GetSelection());
 196         event2.SetEventObject(m_cb);
 197         event2.SetString(m_cb->GetStringSelection());
 198         m_cb->ProcessCommand(event2);
 199
 200         // For consistency with MSW and GTK, also send a text updated event
 201         // After all, the text is updated when a selection is made
 202         wxCommandEvent TextEvent( wxEVT_COMMAND_TEXT_UPDATED, m_cb->GetId() );
 203         TextEvent.SetString( m_cb->GetStringSelection() );
 204         TextEvent.SetEventObject( m_cb );
 205         m_cb->ProcessCommand( TextEvent );
 206     }
 207
 208     virtual wxSize DoGetBestSize() const
 209     {
 210         wxSize sz = wxChoice::DoGetBestSize() ;
 211         if (! m_cb->HasFlag(wxCB_READONLY) )
 212             sz.x = GetPopupWidth() ;
 213
 214         return sz ;
 215     }
 216
 217 private:
 218     wxComboBox *m_cb;
 219
 220     friend class wxComboBox;
 221
 222     DECLARE_EVENT_TABLE()
 223 };
 224
 225 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 226     EVT_CHOICE(-1, wxComboBoxChoice::OnChoice)
 227 END_EVENT_TABLE()
 228
 229 wxComboBox::~wxComboBox()
 230 {
 231     // delete client objects
 232     FreeData();
 233
 234     // delete the controls now, don't leave them alive even though they would
 235     // still be eventually deleted by our parent - but it will be too late, the
 236     // user code expects them to be gone now
 237     if (m_text != NULL)
 238     {
 239         delete m_text;
 240         m_text = NULL;
 241     }
 242
 243     if (m_choice != NULL)
 244     {
 245         delete m_choice;
 246         m_choice = NULL;
 247     }
 248 }
 249
 250 // ----------------------------------------------------------------------------
 251 // geometry
 252 // ----------------------------------------------------------------------------
 253
 254 wxSize wxComboBox::DoGetBestSize() const
 255 {
 256     if (!m_choice && !m_text)
 257         return GetSize();
 258
 259     wxSize size = m_choice->GetBestSize();
 260
 261     if ( m_text != NULL )
 262     {
 263         wxSize  sizeText = m_text->GetBestSize();
 264         if (sizeText.y > size.y)
 265             size.y = sizeText.y;
 266
 267         size.x = m_choice->GetPopupWidth() + sizeText.x + MARGIN;
 268         size.x += TEXTFOCUSBORDER ;
 269         size.y += 2 * TEXTFOCUSBORDER ;
 270     }
 271     else
 272     {
 273         // clipping is too tight
 274         size.y += 1 ;
 275     }
 276
 277     return size;
 278 }
 279
 280 void wxComboBox::DoMoveWindow(int x, int y, int width, int height)
 281 {
 282     wxControl::DoMoveWindow( x, y, width , height );
 283
 284     if ( m_text == NULL )
 285     {
 286         // we might not be fully constructed yet, therefore watch out...
 287         if ( m_choice )
 288             m_choice->SetSize(0, 0 , width, -1);
 289     }
 290     else
 291     {
 292         wxCoord wText = width - m_choice->GetPopupWidth() - MARGIN;
 293         m_text->SetSize(TEXTFOCUSBORDER, TEXTFOCUSBORDER, wText, -1);
 294
 295         // put it at an inset of 1 to have outer area shadows drawn as well
 296         m_choice->SetSize(TEXTFOCUSBORDER + wText + MARGIN - 1 , TEXTFOCUSBORDER, m_choice->GetPopupWidth() , -1);
 297     }
 298 }
 299
 300 // ----------------------------------------------------------------------------
 301 // operations forwarded to the subcontrols
 302 // ----------------------------------------------------------------------------
 303
 304 bool wxComboBox::Enable(bool enable)
 305 {
 306     if ( !wxControl::Enable(enable) )
 307         return false;
 308
 309     if (m_text)
 310         m_text->Enable(enable);
 311
 312     return true;
 313 }
 314
 315 bool wxComboBox::Show(bool show)
 316 {
 317     if ( !wxControl::Show(show) )
 318         return false;
 319
 320     return true;
 321 }
 322
 323 void wxComboBox::DelegateTextChanged( const wxString& value )
 324 {
 325     SetStringSelection( value );
 326 }
 327
 328 void wxComboBox::DelegateChoice( const wxString& value )
 329 {
 330     SetStringSelection( value );
 331 }
 332
 333 void wxComboBox::Init()
 334 {
 335     m_container.SetContainerWindow(this);
 336 }
 337
 338 bool wxComboBox::Create(wxWindow *parent,
 339     wxWindowID id,
 340     const wxString& value,
 341     const wxPoint& pos,
 342     const wxSize& size,
 343     const wxArrayString& choices,
 344     long style,
 345     const wxValidator& validator,
 346     const wxString& name)
 347 {
 348     wxCArrayString chs( choices );
 349
 350     return Create( parent, id, value, pos, size, chs.GetCount(),
 351                    chs.GetStrings(), style, validator, name );
 352 }
 353
 354 bool wxComboBox::Create(wxWindow *parent,
 355     wxWindowID id,
 356     const wxString& value,
 357     const wxPoint& pos,
 358     const wxSize& size,
 359     int n,
 360     const wxString choices[],
 361     long style,
 362     const wxValidator& validator,
 363     const wxString& name)
 364 {
 365     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 366                             validator, name) )
 367     {
 368         return false;
 369     }
 370
 371     m_choice = new wxComboBoxChoice(this, style );
 372     wxSize csize = size;
 373     if ( style & wxCB_READONLY )
 374     {
 375         m_text = NULL;
 376     }
 377     else
 378     {
 379         m_text = new wxComboBoxText(this);
 380         if ( size.y == -1 )
 381         {
 382             csize.y = m_text->GetSize().y ;
 383             csize.y += 2 * TEXTFOCUSBORDER ;
 384         }
 385     }
 386
 387     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 388
 389     for ( int i = 0 ; i < n ; i++ )
 390     {
 391         m_choice->DoAppend( choices[ i ] );
 392     }
 393
 394     // Needed because it is a wxControlWithItems
 395     SetBestSize(size);
 396     SetStringSelection(value);
 397
 398     return true;
 399 }
 400
 401 wxString wxComboBox::GetValue() const
 402 {
 403     wxString        result;
 404
 405     if ( m_text == NULL )
 406         result = m_choice->GetString( m_choice->GetSelection() );
 407     else
 408         result = m_text->GetValue();
 409
 410     return result;
 411 }
 412
 413 int wxComboBox::GetCount() const
 414 {
 415     return m_choice->GetCount() ;
 416 }
 417
 418 void wxComboBox::SetValue(const wxString& value)
 419 {
 420     if ( HasFlag(wxCB_READONLY) )
 421         SetStringSelection( value ) ;
 422     else
 423         m_text->SetValue( value );
 424 }
 425
 426 // Clipboard operations
 427
 428 void wxComboBox::Copy()
 429 {
 430     if ( m_text != NULL )
 431         m_text->Copy();
 432 }
 433
 434 void wxComboBox::Cut()
 435 {
 436     if ( m_text != NULL )
 437         m_text->Cut();
 438 }
 439
 440 void wxComboBox::Paste()
 441 {
 442     if ( m_text != NULL )
 443         m_text->Paste();
 444 }
 445
 446 void wxComboBox::SetEditable(bool editable)
 447 {
 448     if ( ( m_text == NULL ) && editable )
 449     {
 450         m_text = new wxComboBoxText( this );
 451     }
 452     else if ( ( m_text != NULL ) && !editable )
 453     {
 454         delete m_text;
 455         m_text = NULL;
 456     }
 457
 458     int currentX, currentY;
 459     GetPosition( &currentX, &currentY );
 460
 461     int currentW, currentH;
 462     GetSize( &currentW, &currentH );
 463
 464     DoMoveWindow( currentX, currentY, currentW, currentH );
 465 }
 466
 467 void wxComboBox::SetInsertionPoint(long pos)
 468 {
 469     // TODO
 470 }
 471
 472 void wxComboBox::SetInsertionPointEnd()
 473 {
 474     // TODO
 475 }
 476
 477 long wxComboBox::GetInsertionPoint() const
 478 {
 479     // TODO
 480     return 0;
 481 }
 482
 483 wxTextPos wxComboBox::GetLastPosition() const
 484 {
 485     // TODO
 486     return 0;
 487 }
 488
 489 void wxComboBox::Replace(long from, long to, const wxString& value)
 490 {
 491     // TODO
 492 }
 493
 494 void wxComboBox::Remove(long from, long to)
 495 {
 496     // TODO
 497 }
 498
 499 void wxComboBox::SetSelection(long from, long to)
 500 {
 501     // TODO
 502 }
 503
 504 int wxComboBox::DoAppend(const wxString& item)
 505 {
 506     return m_choice->DoAppend( item ) ;
 507 }
 508
 509 int wxComboBox::DoInsert(const wxString& item, int pos)
 510 {
 511     return m_choice->DoInsert( item , pos ) ;
 512 }
 513
 514 void wxComboBox::DoSetItemClientData(int n, void* clientData)
 515 {
 516     return m_choice->DoSetItemClientData( n , clientData ) ;
 517 }
 518
 519 void* wxComboBox::DoGetItemClientData(int n) const
 520 {
 521     return m_choice->DoGetItemClientData( n ) ;
 522 }
 523
 524 void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData)
 525 {
 526     return m_choice->DoSetItemClientObject( n , clientData ) ;
 527 }
 528
 529 wxClientData* wxComboBox::DoGetItemClientObject(int n) const
 530 {
 531     return m_choice->DoGetItemClientObject( n ) ;
 532 }
 533
 534 void wxComboBox::FreeData()
 535 {
 536     if ( HasClientObjectData() )
 537     {
 538         size_t count = GetCount();
 539         for ( size_t n = 0; n < count; n++ )
 540         {
 541             SetClientObject( n, NULL );
 542         }
 543     }
 544 }
 545
 546 void wxComboBox::Delete(int n)
 547 {
 548     // force client object deletion
 549     if( HasClientObjectData() )
 550         SetClientObject( n, NULL );
 551     m_choice->Delete( n );
 552 }
 553
 554 void wxComboBox::Clear()
 555 {
 556     FreeData();
 557     m_choice->Clear();
 558 }
 559
 560 int wxComboBox::GetSelection() const
 561 {
 562     return m_choice->GetSelection();
 563 }
 564
 565 void wxComboBox::SetSelection(int n)
 566 {
 567     m_choice->SetSelection( n );
 568
 569     if ( m_text != NULL )
 570         m_text->SetValue( GetString( n ) );
 571 }
 572
 573 int wxComboBox::FindString(const wxString& s, bool bCase) const
 574 {
 575     return m_choice->FindString( s, bCase );
 576 }
 577
 578 wxString wxComboBox::GetString(int n) const
 579 {
 580     return m_choice->GetString( n );
 581 }
 582
 583 wxString wxComboBox::GetStringSelection() const
 584 {
 585     int sel = GetSelection();
 586     if (sel > -1)
 587         return wxString(this->GetString (sel));
 588     else
 589         return wxEmptyString;
 590 }
 591
 592 void wxComboBox::SetString(int n, const wxString& s)
 593 {
 594     m_choice->SetString( n , s ) ;
 595 }
 596
 597 bool wxComboBox::IsEditable() const
 598 {
 599     return m_text != NULL && !HasFlag(wxCB_READONLY);
 600 }
 601
 602 void wxComboBox::Undo()
 603 {
 604     if (m_text != NULL)
 605         m_text->Undo();
 606 }
 607
 608 void wxComboBox::Redo()
 609 {
 610     if (m_text != NULL)
 611         m_text->Redo();
 612 }
 613
 614 void wxComboBox::SelectAll()
 615 {
 616     if (m_text != NULL)
 617         m_text->SelectAll();
 618 }
 619
 620 bool wxComboBox::CanCopy() const
 621 {
 622     if (m_text != NULL)
 623         return m_text->CanCopy();
 624     else
 625         return false;
 626 }
 627
 628 bool wxComboBox::CanCut() const
 629 {
 630     if (m_text != NULL)
 631         return m_text->CanCut();
 632     else
 633         return false;
 634 }
 635
 636 bool wxComboBox::CanPaste() const
 637 {
 638     if (m_text != NULL)
 639         return m_text->CanPaste();
 640     else
 641         return false;
 642 }
 643
 644 bool wxComboBox::CanUndo() const
 645 {
 646     if (m_text != NULL)
 647         return m_text->CanUndo();
 648     else
 649         return false;
 650 }
 651
 652 bool wxComboBox::CanRedo() const
 653 {
 654     if (m_text != NULL)
 655         return m_text->CanRedo();
 656     else
 657         return false;
 658 }
 659
 660 wxInt32 wxComboBox::MacControlHit( WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) )
 661 {
 662 /*
 663     For consistency with other platforms, clicking in the text area does not constitute a selection
 664     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 665     event.SetInt(GetSelection());
 666     event.SetEventObject(this);
 667     event.SetString(GetStringSelection());
 668     ProcessCommand(event);
 669 */
 670
 671     return noErr ;
 672 }
 673
 674 #endif