src/mac/classic/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         m_choice->SetSize(0, 0 , width, -1);
 208     }
 209     else
 210     {
 211         wxCoord wText = width - POPUPWIDTH - MARGIN;
 212         m_text->SetSize(0, 0, wText, height);
 213         m_choice->SetSize(0 + wText + MARGIN, 0, POPUPWIDTH, -1);
 214     }
 215 }
 216
 217
 218
 219 // ----------------------------------------------------------------------------
 220 // operations forwarded to the subcontrols
 221 // ----------------------------------------------------------------------------
 222
 223 bool wxComboBox::Enable(bool enable)
 224 {
 225     if ( !wxControl::Enable(enable) )
 226         return false;
 227
 228     return true;
 229 }
 230
 231 bool wxComboBox::Show(bool show)
 232 {
 233     if ( !wxControl::Show(show) )
 234         return false;
 235
 236     return true;
 237 }
 238
 239 void wxComboBox::SetFocus()
 240 {
 241     if ( m_text != NULL) {
 242         m_text->SetFocus();
 243     }
 244 }
 245
 246
 247 void wxComboBox::DelegateTextChanged( const wxString& value )
 248 {
 249     SetStringSelection( value );
 250 }
 251
 252
 253 void wxComboBox::DelegateChoice( const wxString& value )
 254 {
 255     SetStringSelection( value );
 256 }
 257
 258
 259 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 260            const wxString& value,
 261            const wxPoint& pos,
 262            const wxSize& size,
 263            const wxArrayString& choices,
 264            long style,
 265            const wxValidator& validator,
 266            const wxString& name)
 267 {
 268     wxCArrayString chs( choices );
 269
 270     return Create( parent, id, value, pos, size, chs.GetCount(),
 271                    chs.GetStrings(), style, validator, name );
 272 }
 273
 274
 275 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 276            const wxString& value,
 277            const wxPoint& pos,
 278            const wxSize& size,
 279            int n, const wxString choices[],
 280            long style,
 281            const wxValidator& validator,
 282            const wxString& name)
 283 {
 284     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 285                             wxDefaultValidator, name) )
 286     {
 287         return false;
 288     }
 289
 290     m_choice = new wxComboBoxChoice(this, style );
 291
 292     wxSize csize = size;
 293     if ( style & wxCB_READONLY )
 294     {
 295         m_text = NULL;
 296     }
 297     else
 298     {
 299         m_text = new wxComboBoxText(this);
 300         if ( size.y == -1 ) {
 301           csize.y = m_text->GetSize().y ;
 302         }
 303     }
 304
 305     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 306
 307     for ( int i = 0 ; i < n ; i++ )
 308     {
 309         m_choice->DoAppend( choices[ i ] );
 310     }
 311
 312     return true;
 313 }
 314
 315 wxString wxComboBox::GetValue() const
 316 {
 317     wxString        result;
 318
 319     if ( m_text == NULL )
 320     {
 321         result = m_choice->GetString( m_choice->GetSelection() );
 322     }
 323     else
 324     {
 325         result = m_text->GetValue();
 326     }
 327
 328     return result;
 329 }
 330
 331 void wxComboBox::SetValue(const wxString& value)
 332 {
 333     int s = FindString (value);
 334     if (s == wxNOT_FOUND && !HasFlag(wxCB_READONLY) )
 335     {
 336         m_choice->Append(value) ;
 337     }
 338     SetStringSelection( value ) ;
 339 }
 340
 341 // Clipboard operations
 342 void wxComboBox::Copy()
 343 {
 344     if ( m_text != NULL )
 345     {
 346         m_text->Copy();
 347     }
 348 }
 349
 350 void wxComboBox::Cut()
 351 {
 352     if ( m_text != NULL )
 353     {
 354         m_text->Cut();
 355     }
 356 }
 357
 358 void wxComboBox::Paste()
 359 {
 360     if ( m_text != NULL )
 361     {
 362         m_text->Paste();
 363     }
 364 }
 365
 366 void wxComboBox::SetEditable(bool editable)
 367 {
 368     if ( ( m_text == NULL ) && editable )
 369     {
 370         m_text = new wxComboBoxText( this );
 371     }
 372     else if ( ( m_text != NULL ) && !editable )
 373     {
 374         delete m_text;
 375         m_text = NULL;
 376     }
 377
 378     int currentX, currentY;
 379     GetPosition( &currentX, &currentY );
 380
 381     int currentW, currentH;
 382     GetSize( &currentW, &currentH );
 383
 384     DoMoveWindow( currentX, currentY, currentW, currentH );
 385 }
 386
 387 void wxComboBox::SetInsertionPoint(long pos)
 388 {
 389     // TODO
 390 }
 391
 392 void wxComboBox::SetInsertionPointEnd()
 393 {
 394     // TODO
 395 }
 396
 397 long wxComboBox::GetInsertionPoint() const
 398 {
 399     // TODO
 400     return 0;
 401 }
 402
 403 wxTextPos wxComboBox::GetLastPosition() const
 404 {
 405     // TODO
 406     return 0;
 407 }
 408
 409 void wxComboBox::Replace(long from, long to, const wxString& value)
 410 {
 411     // TODO
 412 }
 413
 414 void wxComboBox::Remove(long from, long to)
 415 {
 416     // TODO
 417 }
 418
 419 void wxComboBox::SetSelection(long from, long to)
 420 {
 421     // TODO
 422 }
 423
 424 int wxComboBox::DoAppend(const wxString& item)
 425 {
 426     return m_choice->DoAppend( item ) ;
 427 }
 428
 429 int wxComboBox::DoInsert(const wxString& item, int pos)
 430 {
 431     return m_choice->DoInsert( item , pos ) ;
 432 }
 433
 434 void wxComboBox::DoSetItemClientData(int n, void* clientData)
 435 {
 436     return m_choice->DoSetItemClientData( n , clientData ) ;
 437 }
 438
 439 void* wxComboBox::DoGetItemClientData(int n) const
 440 {
 441     return m_choice->DoGetItemClientData( n ) ;
 442 }
 443
 444 void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData)
 445 {
 446     return m_choice->DoSetItemClientObject( n , clientData ) ;
 447 }
 448
 449 wxClientData* wxComboBox::DoGetItemClientObject(int n) const
 450 {
 451     return m_choice->DoGetItemClientObject( n ) ;
 452 }
 453
 454 void wxComboBox::FreeData()
 455 {
 456     if ( HasClientObjectData() )
 457     {
 458         size_t count = GetCount();
 459         for ( size_t n = 0; n < count; n++ )
 460         {
 461             SetClientObject( n, NULL );
 462         }
 463     }
 464 }
 465
 466 void wxComboBox::Delete(int n)
 467 {
 468     // force client object deletion
 469     if( HasClientObjectData() )
 470         SetClientObject( n, NULL );
 471     m_choice->Delete( n );
 472 }
 473
 474 void wxComboBox::Clear()
 475 {
 476     FreeData();
 477     m_choice->Clear();
 478 }
 479
 480 int wxComboBox::GetSelection() const
 481 {
 482     return m_choice->GetSelection();
 483 }
 484
 485 void wxComboBox::SetSelection(int n)
 486 {
 487     m_choice->SetSelection( n );
 488
 489     if ( m_text != NULL )
 490     {
 491         m_text->SetValue( GetString( n ) );
 492     }
 493 }
 494
 495 int wxComboBox::FindString(const wxString& s) const
 496 {
 497     return m_choice->FindString( s );
 498 }
 499
 500 wxString wxComboBox::GetString(int n) const
 501 {
 502     return m_choice->GetString( n );
 503 }
 504
 505 wxString wxComboBox::GetStringSelection() const
 506 {
 507     int sel = GetSelection ();
 508     if (sel > -1)
 509         return wxString(this->GetString (sel));
 510     else
 511         return wxEmptyString;
 512 }
 513
 514 void wxComboBox::SetString(int n, const wxString& s)
 515 {
 516     m_choice->SetString( n , s ) ;
 517 }
 518
 519 bool wxComboBox::IsEditable() const
 520 {
 521     return m_text != NULL && !HasFlag(wxCB_READONLY);
 522 }
 523
 524 void wxComboBox::Undo()
 525 {
 526     if (m_text != NULL)
 527         m_text->Undo();
 528 }
 529
 530 void wxComboBox::Redo()
 531 {
 532     if (m_text != NULL)
 533         m_text->Redo();
 534 }
 535
 536 void wxComboBox::SelectAll()
 537 {
 538     if (m_text != NULL)
 539         m_text->SelectAll();
 540 }
 541
 542 bool wxComboBox::CanCopy() const
 543 {
 544     if (m_text != NULL)
 545         return m_text->CanCopy();
 546     else
 547         return false;
 548 }
 549
 550 bool wxComboBox::CanCut() const
 551 {
 552     if (m_text != NULL)
 553         return m_text->CanCut();
 554     else
 555         return false;
 556 }
 557
 558 bool wxComboBox::CanPaste() const
 559 {
 560     if (m_text != NULL)
 561         return m_text->CanPaste();
 562     else
 563         return false;
 564 }
 565
 566 bool wxComboBox::CanUndo() const
 567 {
 568     if (m_text != NULL)
 569         return m_text->CanUndo();
 570     else
 571         return false;
 572 }
 573
 574 bool wxComboBox::CanRedo() const
 575 {
 576     if (m_text != NULL)
 577         return m_text->CanRedo();
 578     else
 579         return false;
 580 }
 581
 582 void wxComboBox::MacHandleControlClick( WXWidget WXUNUSED(control) , wxInt16 WXUNUSED(controlpart) , bool WXUNUSED(mouseStillDown))
 583 {
 584     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 585     event.SetInt(GetSelection());
 586     event.SetEventObject(this);
 587     event.SetString(GetStringSelection());
 588     ProcessCommand(event);
 589 }
 590