src/mac/carbon/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 #ifdef __GNUG__
  13 #pragma implementation "combobox.h"
  14 #endif
  15
  16 #include "wx/combobox.h"
  17 #include "wx/button.h"
  18 #include "wx/menu.h"
  19 #include "wx/mac/uma.h"
  20
  21 #if !USE_SHARED_LIBRARY
  22 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  23 #endif
  24
  25 // composite combobox implementation by Dan "Bud" Keith bud@otsys.com
  26
  27
  28 static int nextPopUpMenuId = 1000 ;
  29 MenuHandle NewUniqueMenu()
  30 {
  31   MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" ) ;
  32   nextPopUpMenuId++ ;
  33   return handle ;
  34 }
  35
  36
  37 // ----------------------------------------------------------------------------
  38 // constants
  39 // ----------------------------------------------------------------------------
  40
  41 // the margin between the text control and the choice
  42 static const wxCoord MARGIN = 2;
  43 #if TARGET_API_MAC_OSX
  44 static const int    POPUPWIDTH = 24;
  45 #else
  46 static const int    POPUPWIDTH = 18;
  47 #endif
  48 static const int    POPUPHEIGHT = 23;
  49
  50
  51 // ----------------------------------------------------------------------------
  52 // wxComboBoxText: text control forwards events to combobox
  53 // ----------------------------------------------------------------------------
  54
  55 class wxComboBoxText : public wxTextCtrl
  56 {
  57 public:
  58     wxComboBoxText( wxComboBox * cb )
  59         : wxTextCtrl( cb , 1 )
  60     {
  61         m_cb = cb;
  62     }
  63
  64 protected:
  65     void OnChar( wxKeyEvent& event )
  66     {
  67         if ( event.GetKeyCode() == WXK_RETURN )
  68         {
  69             wxString value = GetValue();
  70
  71             if ( m_cb->GetCount() == 0 )
  72             {
  73                 // make Enter generate "selected" event if there is only one item
  74                 // in the combobox - without it, it's impossible to select it at
  75                 // all!
  76                 wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
  77                 event.SetInt( 0 );
  78                 event.SetString( value );
  79                 event.SetEventObject( m_cb );
  80                 m_cb->GetEventHandler()->ProcessEvent( event );
  81             }
  82             else
  83             {
  84                 // add the item to the list if it's not there yet
  85                 if ( m_cb->FindString(value) == wxNOT_FOUND )
  86                 {
  87                     m_cb->Append(value);
  88                     m_cb->SetStringSelection(value);
  89
  90                     // and generate the selected event for it
  91                     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
  92                     event.SetInt( m_cb->GetCount() - 1 );
  93                     event.SetString( value );
  94                     event.SetEventObject( m_cb );
  95                     m_cb->GetEventHandler()->ProcessEvent( event );
  96                 }
  97
  98                 // This will invoke the dialog default action, such
  99                 // as the clicking the default button.
 100
 101                 wxWindow *parent = GetParent();
 102                 while( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL ) {
 103                     parent = parent->GetParent() ;
 104                 }
 105                 if ( parent && parent->GetDefaultItem() )
 106                 {
 107                     wxButton *def = wxDynamicCast(parent->GetDefaultItem(),
 108                                                           wxButton);
 109                     if ( def && def->IsEnabled() )
 110                     {
 111                         wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 112                         event.SetEventObject(def);
 113                         def->Command(event);
 114                         return ;
 115                    }
 116                 }
 117
 118                 return;
 119             }
 120         }
 121
 122         event.Skip();
 123     }
 124
 125 private:
 126     wxComboBox *m_cb;
 127
 128     DECLARE_EVENT_TABLE()
 129 };
 130
 131 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
 132     EVT_CHAR( wxComboBoxText::OnChar)
 133 END_EVENT_TABLE()
 134
 135 class wxComboBoxChoice : public wxChoice
 136 {
 137 public:
 138     wxComboBoxChoice(wxComboBox *cb, int style)
 139         : wxChoice( cb , 1 )
 140     {
 141         m_cb = cb;
 142     }
 143
 144 protected:
 145     void OnChoice( wxCommandEvent& e )
 146     {
 147         wxString    s = e.GetString();
 148
 149         m_cb->DelegateChoice( s );
 150         wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 151         event2.SetInt(m_cb->GetSelection());
 152         event2.SetEventObject(m_cb);
 153         event2.SetString(m_cb->GetStringSelection());
 154         m_cb->ProcessCommand(event2);
 155     }
 156     virtual wxSize DoGetBestSize() const
 157     {
 158         wxSize sz = wxChoice::DoGetBestSize() ;
 159         sz.x = POPUPWIDTH ;
 160         return sz ;
 161     }
 162
 163 private:
 164     wxComboBox *m_cb;
 165
 166     DECLARE_EVENT_TABLE()
 167 };
 168
 169 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 170     EVT_CHOICE(-1, wxComboBoxChoice::OnChoice)
 171 END_EVENT_TABLE()
 172
 173 wxComboBox::~wxComboBox()
 174 {
 175     // delete client objects
 176     FreeData();
 177
 178     // delete the controls now, don't leave them alive even though they would
 179     // still be eventually deleted by our parent - but it will be too late, the
 180     // user code expects them to be gone now
 181     if (m_text != NULL) {
 182         delete m_text;
 183         m_text = NULL;
 184     }
 185     if (m_choice != NULL) {
 186         delete m_choice;
 187         m_choice = NULL;
 188     }
 189 }
 190
 191
 192 // ----------------------------------------------------------------------------
 193 // geometry
 194 // ----------------------------------------------------------------------------
 195
 196 wxSize wxComboBox::DoGetBestSize() const
 197 {
 198     wxSize size = m_choice->GetBestSize();
 199
 200     if ( m_text != NULL )
 201     {
 202         wxSize  sizeText = m_text->GetBestSize();
 203
 204         size.x = POPUPWIDTH + sizeText.x + MARGIN;
 205     }
 206
 207     return size;
 208 }
 209
 210 void wxComboBox::DoMoveWindow(int x, int y, int width, int height) {
 211     height = POPUPHEIGHT;
 212
 213     wxControl::DoMoveWindow(x, y, width, height);
 214
 215     if ( m_text == NULL )
 216     {
 217         // we might not be fully constructed yet, therefore watch out...
 218         if ( m_choice )
 219             m_choice->SetSize(0, 0 , width, -1);
 220     }
 221     else
 222     {
 223         wxCoord wText = width - POPUPWIDTH - MARGIN;
 224         m_text->SetSize(0, 0, wText, height);
 225         m_choice->SetSize(0 + wText + MARGIN, 0, POPUPWIDTH, -1);
 226     }
 227 }
 228
 229
 230
 231 // ----------------------------------------------------------------------------
 232 // operations forwarded to the subcontrols
 233 // ----------------------------------------------------------------------------
 234
 235 bool wxComboBox::Enable(bool enable)
 236 {
 237     if ( !wxControl::Enable(enable) )
 238         return FALSE;
 239
 240     return TRUE;
 241 }
 242
 243 bool wxComboBox::Show(bool show)
 244 {
 245     if ( !wxControl::Show(show) )
 246         return FALSE;
 247
 248     return TRUE;
 249 }
 250
 251 void wxComboBox::SetFocus()
 252 {
 253     if ( m_text != NULL) {
 254         m_text->SetFocus();
 255     }
 256 }
 257
 258
 259 void wxComboBox::DelegateTextChanged( const wxString& value )
 260 {
 261     SetStringSelection( value );
 262 }
 263
 264
 265 void wxComboBox::DelegateChoice( const wxString& value )
 266 {
 267     SetStringSelection( value );
 268 }
 269
 270
 271 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 272            const wxString& value,
 273            const wxPoint& pos,
 274            const wxSize& size,
 275            const wxArrayString& choices,
 276            long style,
 277            const wxValidator& validator,
 278            const wxString& name)
 279 {
 280     wxCArrayString chs( choices );
 281
 282     return Create( parent, id, value, pos, size, chs.GetCount(),
 283                    chs.GetStrings(), style, validator, name );
 284 }
 285
 286
 287 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 288            const wxString& value,
 289            const wxPoint& pos,
 290            const wxSize& size,
 291            int n, const wxString choices[],
 292            long style,
 293            const wxValidator& validator,
 294            const wxString& name)
 295 {
 296     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 297                             wxDefaultValidator, name) )
 298     {
 299         return FALSE;
 300     }
 301
 302     m_choice = new wxComboBoxChoice(this, style );
 303     m_choice->SetSizeHints( wxSize( POPUPWIDTH , POPUPHEIGHT ) ) ;
 304     wxSize csize = size;
 305     if ( style & wxCB_READONLY )
 306     {
 307         m_text = NULL;
 308     }
 309     else
 310     {
 311         m_text = new wxComboBoxText(this);
 312         if ( size.y == -1 ) {
 313           csize.y = m_text->GetSize().y ;
 314         }
 315     }
 316
 317     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 318
 319     for ( int i = 0 ; i < n ; i++ )
 320     {
 321         m_choice->DoAppend( choices[ i ] );
 322     }
 323
 324     SetBestSize(csize);   // Needed because it is a wxControlWithItems
 325
 326     return TRUE;
 327 }
 328
 329 wxString wxComboBox::GetValue() const
 330 {
 331     wxString        result;
 332
 333     if ( m_text == NULL )
 334     {
 335         result = m_choice->GetString( m_choice->GetSelection() );
 336     }
 337     else
 338     {
 339         result = m_text->GetValue();
 340     }
 341
 342     return result;
 343 }
 344
 345 int wxComboBox::GetCount() const
 346 {
 347     return m_choice->GetCount() ;
 348 }
 349
 350 void wxComboBox::SetValue(const wxString& value)
 351 {
 352     int s = FindString (value);
 353     if (s == wxNOT_FOUND && !HasFlag(wxCB_READONLY) )
 354     {
 355         m_choice->Append(value) ;
 356     }
 357     SetStringSelection( value ) ;
 358 }
 359
 360 // Clipboard operations
 361 void wxComboBox::Copy()
 362 {
 363     if ( m_text != NULL )
 364     {
 365         m_text->Copy();
 366     }
 367 }
 368
 369 void wxComboBox::Cut()
 370 {
 371     if ( m_text != NULL )
 372     {
 373         m_text->Cut();
 374     }
 375 }
 376
 377 void wxComboBox::Paste()
 378 {
 379     if ( m_text != NULL )
 380     {
 381         m_text->Paste();
 382     }
 383 }
 384
 385 void wxComboBox::SetEditable(bool editable)
 386 {
 387     if ( ( m_text == NULL ) && editable )
 388     {
 389         m_text = new wxComboBoxText( this );
 390     }
 391     else if ( ( m_text != NULL ) && !editable )
 392     {
 393         delete m_text;
 394         m_text = NULL;
 395     }
 396
 397     int currentX, currentY;
 398     GetPosition( &currentX, &currentY );
 399
 400     int currentW, currentH;
 401     GetSize( &currentW, &currentH );
 402
 403     DoMoveWindow( currentX, currentY, currentW, currentH );
 404 }
 405
 406 void wxComboBox::SetInsertionPoint(long pos)
 407 {
 408     // TODO
 409 }
 410
 411 void wxComboBox::SetInsertionPointEnd()
 412 {
 413     // TODO
 414 }
 415
 416 long wxComboBox::GetInsertionPoint() const
 417 {
 418     // TODO
 419     return 0;
 420 }
 421
 422 long wxComboBox::GetLastPosition() const
 423 {
 424     // TODO
 425     return 0;
 426 }
 427
 428 void wxComboBox::Replace(long from, long to, const wxString& value)
 429 {
 430     // TODO
 431 }
 432
 433 void wxComboBox::Remove(long from, long to)
 434 {
 435     // TODO
 436 }
 437
 438 void wxComboBox::SetSelection(long from, long to)
 439 {
 440     // TODO
 441 }
 442
 443 int wxComboBox::DoAppend(const wxString& item)
 444 {
 445     return m_choice->DoAppend( item ) ;
 446 }
 447
 448 int wxComboBox::DoInsert(const wxString& item, int pos)
 449 {
 450     return m_choice->DoInsert( item , pos ) ;
 451 }
 452
 453 void wxComboBox::DoSetItemClientData(int n, void* clientData)
 454 {
 455     return m_choice->DoSetItemClientData( n , clientData ) ;
 456 }
 457
 458 void* wxComboBox::DoGetItemClientData(int n) const
 459 {
 460     return m_choice->DoGetItemClientData( n ) ;
 461 }
 462
 463 void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData)
 464 {
 465     return m_choice->DoSetItemClientObject( n , clientData ) ;
 466 }
 467
 468 wxClientData* wxComboBox::DoGetItemClientObject(int n) const
 469 {
 470     return m_choice->DoGetItemClientObject( n ) ;
 471 }
 472
 473 void wxComboBox::FreeData()
 474 {
 475     if ( HasClientObjectData() )
 476     {
 477         size_t count = GetCount();
 478         for ( size_t n = 0; n < count; n++ )
 479         {
 480             SetClientObject( n, NULL );
 481         }
 482     }
 483 }
 484
 485 void wxComboBox::Delete(int n)
 486 {
 487     // force client object deletion
 488     if( HasClientObjectData() )
 489         SetClientObject( n, NULL );
 490     m_choice->Delete( n );
 491 }
 492
 493 void wxComboBox::Clear()
 494 {
 495     FreeData();
 496     m_choice->Clear();
 497 }
 498
 499 int wxComboBox::GetSelection() const
 500 {
 501     return m_choice->GetSelection();
 502 }
 503
 504 void wxComboBox::SetSelection(int n)
 505 {
 506     m_choice->SetSelection( n );
 507
 508     if ( m_text != NULL )
 509     {
 510         m_text->SetValue( GetString( n ) );
 511     }
 512 }
 513
 514 int wxComboBox::FindString(const wxString& s) const
 515 {
 516     return m_choice->FindString( s );
 517 }
 518
 519 wxString wxComboBox::GetString(int n) const
 520 {
 521     return m_choice->GetString( n );
 522 }
 523
 524 wxString wxComboBox::GetStringSelection() const
 525 {
 526     int sel = GetSelection ();
 527     if (sel > -1)
 528         return wxString(this->GetString (sel));
 529     else
 530         return wxEmptyString;
 531 }
 532
 533 bool wxComboBox::SetStringSelection(const wxString& sel)
 534 {
 535     int s = FindString (sel);
 536     if (s > -1)
 537         {
 538             SetSelection (s);
 539             return TRUE;
 540         }
 541     else
 542         return FALSE;
 543 }
 544
 545 void wxComboBox::SetString(int n, const wxString& s)
 546 {
 547     m_choice->SetString( n , s ) ;
 548 }
 549
 550
 551 wxInt32 wxComboBox::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) )
 552 {
 553     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 554     event.SetInt(GetSelection());
 555     event.SetEventObject(this);
 556     event.SetString(GetStringSelection());
 557     ProcessCommand(event);
 558     return noErr ;
 559 }
 560