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