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         // remove the default minsize, the combobox will have one instead
  64         SetSizeHints(-1,-1);
  65     }
  66
  67 protected:
  68     void OnChar( wxKeyEvent& event )
  69     {
  70         if ( event.GetKeyCode() == WXK_RETURN )
  71         {
  72             wxString value = GetValue();
  73
  74             if ( m_cb->GetCount() == 0 )
  75             {
  76                 // make Enter generate "selected" event if there is only one item
  77                 // in the combobox - without it, it's impossible to select it at
  78                 // all!
  79                 wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
  80                 event.SetInt( 0 );
  81                 event.SetString( value );
  82                 event.SetEventObject( m_cb );
  83                 m_cb->GetEventHandler()->ProcessEvent( event );
  84             }
  85             else
  86             {
  87                 // add the item to the list if it's not there yet
  88                 if ( m_cb->FindString(value) == wxNOT_FOUND )
  89                 {
  90                     m_cb->Append(value);
  91                     m_cb->SetStringSelection(value);
  92
  93                     // and generate the selected event for it
  94                     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
  95                     event.SetInt( m_cb->GetCount() - 1 );
  96                     event.SetString( value );
  97                     event.SetEventObject( m_cb );
  98                     m_cb->GetEventHandler()->ProcessEvent( event );
  99                 }
 100
 101                 // This will invoke the dialog default action, such
 102                 // as the clicking the default button.
 103
 104                 wxWindow *parent = GetParent();
 105                 while( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL ) {
 106                     parent = parent->GetParent() ;
 107                 }
 108                 if ( parent && parent->GetDefaultItem() )
 109                 {
 110                     wxButton *def = wxDynamicCast(parent->GetDefaultItem(),
 111                                                           wxButton);
 112                     if ( def && def->IsEnabled() )
 113                     {
 114                         wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 115                         event.SetEventObject(def);
 116                         def->Command(event);
 117                         return ;
 118                    }
 119                 }
 120
 121                 return;
 122             }
 123         }
 124
 125         event.Skip();
 126     }
 127
 128 private:
 129     wxComboBox *m_cb;
 130
 131     DECLARE_EVENT_TABLE()
 132 };
 133
 134 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
 135     EVT_CHAR( wxComboBoxText::OnChar)
 136 END_EVENT_TABLE()
 137
 138 class wxComboBoxChoice : public wxChoice
 139 {
 140 public:
 141     wxComboBoxChoice(wxComboBox *cb, int style)
 142         : wxChoice( cb , 1 )
 143     {
 144         m_cb = cb;
 145
 146         // remove the default minsize, the combobox will have one instead
 147         SetSizeHints(-1,-1);
 148     }
 149
 150 protected:
 151     void OnChoice( wxCommandEvent& e )
 152     {
 153         wxString    s = e.GetString();
 154
 155         m_cb->DelegateChoice( s );
 156         wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 157         event2.SetInt(m_cb->GetSelection());
 158         event2.SetEventObject(m_cb);
 159         event2.SetString(m_cb->GetStringSelection());
 160         m_cb->ProcessCommand(event2);
 161     }
 162     virtual wxSize DoGetBestSize() const
 163     {
 164         wxSize sz = wxChoice::DoGetBestSize() ;
 165         if (! m_cb->HasFlag(wxCB_READONLY) )
 166             sz.x = POPUPWIDTH;
 167         return sz ;
 168     }
 169
 170 private:
 171     wxComboBox *m_cb;
 172
 173     DECLARE_EVENT_TABLE()
 174 };
 175
 176 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 177     EVT_CHOICE(-1, wxComboBoxChoice::OnChoice)
 178 END_EVENT_TABLE()
 179
 180 wxComboBox::~wxComboBox()
 181 {
 182     // delete client objects
 183     FreeData();
 184
 185     // delete the controls now, don't leave them alive even though they would
 186     // still be eventually deleted by our parent - but it will be too late, the
 187     // user code expects them to be gone now
 188     if (m_text != NULL) {
 189         delete m_text;
 190         m_text = NULL;
 191     }
 192     if (m_choice != NULL) {
 193         delete m_choice;
 194         m_choice = NULL;
 195     }
 196 }
 197
 198
 199 // ----------------------------------------------------------------------------
 200 // geometry
 201 // ----------------------------------------------------------------------------
 202
 203 wxSize wxComboBox::DoGetBestSize() const
 204 {
 205     wxSize size = m_choice->GetBestSize();
 206
 207     if ( m_text != NULL )
 208     {
 209         wxSize  sizeText = m_text->GetBestSize();
 210
 211         size.x = POPUPWIDTH + sizeText.x + MARGIN;
 212     }
 213
 214     return size;
 215 }
 216
 217 void wxComboBox::DoMoveWindow(int x, int y, int width, int height) {
 218     height = POPUPHEIGHT;
 219
 220     wxControl::DoMoveWindow(x, y, width, height);
 221
 222     if ( m_text == NULL )
 223     {
 224         // we might not be fully constructed yet, therefore watch out...
 225         if ( m_choice )
 226             m_choice->SetSize(0, 0 , width, -1);
 227     }
 228     else
 229     {
 230         wxCoord wText = width - POPUPWIDTH - MARGIN;
 231         m_text->SetSize(0, 0, wText, height);
 232         m_choice->SetSize(0 + wText + MARGIN, 0, POPUPWIDTH, -1);
 233     }
 234 }
 235
 236
 237
 238 // ----------------------------------------------------------------------------
 239 // operations forwarded to the subcontrols
 240 // ----------------------------------------------------------------------------
 241
 242 bool wxComboBox::Enable(bool enable)
 243 {
 244     if ( !wxControl::Enable(enable) )
 245         return FALSE;
 246
 247     return TRUE;
 248 }
 249
 250 bool wxComboBox::Show(bool show)
 251 {
 252     if ( !wxControl::Show(show) )
 253         return FALSE;
 254
 255     return TRUE;
 256 }
 257
 258 void wxComboBox::SetFocus()
 259 {
 260     if ( m_text != NULL) {
 261         m_text->SetFocus();
 262     }
 263 }
 264
 265
 266 void wxComboBox::DelegateTextChanged( const wxString& value )
 267 {
 268     SetStringSelection( value );
 269 }
 270
 271
 272 void wxComboBox::DelegateChoice( const wxString& value )
 273 {
 274     SetStringSelection( value );
 275 }
 276
 277
 278 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 279            const wxString& value,
 280            const wxPoint& pos,
 281            const wxSize& size,
 282            const wxArrayString& choices,
 283            long style,
 284            const wxValidator& validator,
 285            const wxString& name)
 286 {
 287     wxCArrayString chs( choices );
 288
 289     return Create( parent, id, value, pos, size, chs.GetCount(),
 290                    chs.GetStrings(), style, validator, name );
 291 }
 292
 293
 294 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 295            const wxString& value,
 296            const wxPoint& pos,
 297            const wxSize& size,
 298            int n, const wxString choices[],
 299            long style,
 300            const wxValidator& validator,
 301            const wxString& name)
 302 {
 303     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 304                             wxDefaultValidator, name) )
 305     {
 306         return FALSE;
 307     }
 308
 309     m_choice = new wxComboBoxChoice(this, style );
 310     m_choice->SetSizeHints( wxSize( POPUPWIDTH , POPUPHEIGHT ) ) ;
 311     wxSize csize = size;
 312     if ( style & wxCB_READONLY )
 313     {
 314         m_text = NULL;
 315     }
 316     else
 317     {
 318         m_text = new wxComboBoxText(this);
 319         if ( size.y == -1 ) {
 320           csize.y = m_text->GetSize().y ;
 321         }
 322     }
 323
 324     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 325
 326     for ( int i = 0 ; i < n ; i++ )
 327     {
 328         m_choice->DoAppend( choices[ i ] );
 329     }
 330
 331     SetBestSize(csize);   // Needed because it is a wxControlWithItems
 332
 333     return TRUE;
 334 }
 335
 336 wxString wxComboBox::GetValue() const
 337 {
 338     wxString        result;
 339
 340     if ( m_text == NULL )
 341     {
 342         result = m_choice->GetString( m_choice->GetSelection() );
 343     }
 344     else
 345     {
 346         result = m_text->GetValue();
 347     }
 348
 349     return result;
 350 }
 351
 352 int wxComboBox::GetCount() const
 353 {
 354     return m_choice->GetCount() ;
 355 }
 356
 357 void wxComboBox::SetValue(const wxString& value)
 358 {
 359     int s = FindString (value);
 360     if (s == wxNOT_FOUND && !HasFlag(wxCB_READONLY) )
 361     {
 362         m_choice->Append(value) ;
 363     }
 364     SetStringSelection( value ) ;
 365 }
 366
 367 // Clipboard operations
 368 void wxComboBox::Copy()
 369 {
 370     if ( m_text != NULL )
 371     {
 372         m_text->Copy();
 373     }
 374 }
 375
 376 void wxComboBox::Cut()
 377 {
 378     if ( m_text != NULL )
 379     {
 380         m_text->Cut();
 381     }
 382 }
 383
 384 void wxComboBox::Paste()
 385 {
 386     if ( m_text != NULL )
 387     {
 388         m_text->Paste();
 389     }
 390 }
 391
 392 void wxComboBox::SetEditable(bool editable)
 393 {
 394     if ( ( m_text == NULL ) && editable )
 395     {
 396         m_text = new wxComboBoxText( this );
 397     }
 398     else if ( ( m_text != NULL ) && !editable )
 399     {
 400         delete m_text;
 401         m_text = NULL;
 402     }
 403
 404     int currentX, currentY;
 405     GetPosition( &currentX, &currentY );
 406
 407     int currentW, currentH;
 408     GetSize( &currentW, &currentH );
 409
 410     DoMoveWindow( currentX, currentY, currentW, currentH );
 411 }
 412
 413 void wxComboBox::SetInsertionPoint(long pos)
 414 {
 415     // TODO
 416 }
 417
 418 void wxComboBox::SetInsertionPointEnd()
 419 {
 420     // TODO
 421 }
 422
 423 long wxComboBox::GetInsertionPoint() const
 424 {
 425     // TODO
 426     return 0;
 427 }
 428
 429 long wxComboBox::GetLastPosition() const
 430 {
 431     // TODO
 432     return 0;
 433 }
 434
 435 void wxComboBox::Replace(long from, long to, const wxString& value)
 436 {
 437     // TODO
 438 }
 439
 440 void wxComboBox::Remove(long from, long to)
 441 {
 442     // TODO
 443 }
 444
 445 void wxComboBox::SetSelection(long from, long to)
 446 {
 447     // TODO
 448 }
 449
 450 int wxComboBox::DoAppend(const wxString& item)
 451 {
 452     return m_choice->DoAppend( item ) ;
 453 }
 454
 455 int wxComboBox::DoInsert(const wxString& item, int pos)
 456 {
 457     return m_choice->DoInsert( item , pos ) ;
 458 }
 459
 460 void wxComboBox::DoSetItemClientData(int n, void* clientData)
 461 {
 462     return m_choice->DoSetItemClientData( n , clientData ) ;
 463 }
 464
 465 void* wxComboBox::DoGetItemClientData(int n) const
 466 {
 467     return m_choice->DoGetItemClientData( n ) ;
 468 }
 469
 470 void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData)
 471 {
 472     return m_choice->DoSetItemClientObject( n , clientData ) ;
 473 }
 474
 475 wxClientData* wxComboBox::DoGetItemClientObject(int n) const
 476 {
 477     return m_choice->DoGetItemClientObject( n ) ;
 478 }
 479
 480 void wxComboBox::FreeData()
 481 {
 482     if ( HasClientObjectData() )
 483     {
 484         size_t count = GetCount();
 485         for ( size_t n = 0; n < count; n++ )
 486         {
 487             SetClientObject( n, NULL );
 488         }
 489     }
 490 }
 491
 492 void wxComboBox::Delete(int n)
 493 {
 494     // force client object deletion
 495     if( HasClientObjectData() )
 496         SetClientObject( n, NULL );
 497     m_choice->Delete( n );
 498 }
 499
 500 void wxComboBox::Clear()
 501 {
 502     FreeData();
 503     m_choice->Clear();
 504 }
 505
 506 int wxComboBox::GetSelection() const
 507 {
 508     return m_choice->GetSelection();
 509 }
 510
 511 void wxComboBox::SetSelection(int n)
 512 {
 513     m_choice->SetSelection( n );
 514
 515     if ( m_text != NULL )
 516     {
 517         m_text->SetValue( GetString( n ) );
 518     }
 519 }
 520
 521 int wxComboBox::FindString(const wxString& s) const
 522 {
 523     return m_choice->FindString( s );
 524 }
 525
 526 wxString wxComboBox::GetString(int n) const
 527 {
 528     return m_choice->GetString( n );
 529 }
 530
 531 wxString wxComboBox::GetStringSelection() const
 532 {
 533     int sel = GetSelection ();
 534     if (sel > -1)
 535         return wxString(this->GetString (sel));
 536     else
 537         return wxEmptyString;
 538 }
 539
 540 bool wxComboBox::SetStringSelection(const wxString& sel)
 541 {
 542     int s = FindString (sel);
 543     if (s > -1)
 544         {
 545             SetSelection (s);
 546             return TRUE;
 547         }
 548     else
 549         return FALSE;
 550 }
 551
 552 void wxComboBox::SetString(int n, const wxString& s)
 553 {
 554     m_choice->SetString( n , s ) ;
 555 }
 556
 557
 558 wxInt32 wxComboBox::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) )
 559 {
 560     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 561     event.SetInt(GetSelection());
 562     event.SetEventObject(this);
 563     event.SetString(GetStringSelection());
 564     ProcessCommand(event);
 565     return noErr ;
 566 }
 567