src/mac/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        combobox.cpp
   3 // Purpose:     wxComboBox class
   4 // Author:      AUTHOR
   5 // Modified by:
   6 // Created:     ??/??/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) AUTHOR
   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/menu.h"
  18 #include "wx/mac/uma.h"
  19
  20 #if !USE_SHARED_LIBRARY
  21 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  22 #endif
  23
  24 // composite combobox implementation by Dan "Bud" Keith bud@otsys.com
  25
  26
  27 static int nextPopUpMenuId = 1000 ;
  28 MenuHandle NewUniqueMenu()
  29 {
  30   MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" ) ;
  31   nextPopUpMenuId++ ;
  32   return handle ;
  33 }
  34
  35
  36 // ----------------------------------------------------------------------------
  37 // constants
  38 // ----------------------------------------------------------------------------
  39
  40 // the margin between the text control and the choice
  41 static const wxCoord MARGIN = 2;
  42 static const int    POPUPWIDTH = 18;
  43 static const int    POPUPHEIGHT = 23;
  44
  45
  46 // ----------------------------------------------------------------------------
  47 // wxComboBoxText: text control forwards events to combobox
  48 // ----------------------------------------------------------------------------
  49
  50 class wxComboBoxText : public wxTextCtrl
  51 {
  52 public:
  53     wxComboBoxText( wxComboBox * cb )
  54         : wxTextCtrl( cb , 1 )
  55     {
  56         m_cb = cb;
  57     }
  58
  59 protected:
  60     void OnTextChange( wxCommandEvent& event )
  61     {
  62         wxString    s = GetValue();
  63
  64         if (!s.IsEmpty())
  65             m_cb->DelegateTextChanged( s );
  66
  67         event.Skip();
  68     }
  69
  70 private:
  71     wxComboBox *m_cb;
  72
  73     DECLARE_EVENT_TABLE()
  74 };
  75
  76 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
  77     EVT_TEXT(-1, wxComboBoxText::OnTextChange)
  78 END_EVENT_TABLE()
  79
  80 class wxComboBoxChoice : public wxChoice
  81 {
  82 public:
  83     wxComboBoxChoice(wxComboBox *cb, int style)
  84         : wxChoice( cb , 1 )
  85     {
  86         m_cb = cb;
  87     }
  88
  89 protected:
  90     void OnChoice( wxCommandEvent& e )
  91     {
  92         wxString    s = e.GetString();
  93
  94         m_cb->DelegateChoice( s );
  95     }
  96
  97 private:
  98     wxComboBox *m_cb;
  99
 100     DECLARE_EVENT_TABLE()
 101 };
 102
 103 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 104     EVT_CHOICE(-1, wxComboBoxChoice::OnChoice)
 105 END_EVENT_TABLE()
 106
 107 wxComboBox::~wxComboBox()
 108 {
 109    // delete the controls now, don't leave them alive even though they would
 110     // still be eventually deleted by our parent - but it will be too late, the
 111     // user code expects them to be gone now
 112     if (m_text != NULL) {
 113         delete m_text;
 114         m_text = NULL;
 115     }
 116     if (m_choice != NULL) {
 117         delete m_choice;
 118         m_choice = NULL;
 119     }
 120 }
 121
 122
 123 // ----------------------------------------------------------------------------
 124 // geometry
 125 // ----------------------------------------------------------------------------
 126
 127 wxSize wxComboBox::DoGetBestSize() const
 128 {
 129     wxSize size = m_choice->GetBestSize();
 130
 131     if ( m_text != 0 )
 132     {
 133         wxSize  sizeText = m_text->GetBestSize();
 134
 135         size.x = POPUPWIDTH + sizeText.x + MARGIN;
 136     }
 137
 138     return size;
 139 }
 140
 141 void wxComboBox::DoMoveWindow(int x, int y, int width, int height) {
 142     height = POPUPHEIGHT;
 143
 144     wxControl::DoMoveWindow(x, y, width, height);
 145
 146     if ( m_text == 0 )
 147     {
 148         m_choice->SetSize(0, 0 , width, -1);
 149     }
 150     else
 151     {
 152         wxCoord wText = width - POPUPWIDTH;
 153         m_text->SetSize(0, 0, wText, height);
 154         m_choice->SetSize(0 + wText + MARGIN, 0, POPUPWIDTH, -1);
 155     }
 156 }
 157
 158
 159
 160 // ----------------------------------------------------------------------------
 161 // operations forwarded to the subcontrols
 162 // ----------------------------------------------------------------------------
 163
 164 bool wxComboBox::Enable(bool enable)
 165 {
 166     if ( !wxControl::Enable(enable) )
 167         return FALSE;
 168
 169     return TRUE;
 170 }
 171
 172 bool wxComboBox::Show(bool show)
 173 {
 174     if ( !wxControl::Show(show) )
 175         return FALSE;
 176
 177     return TRUE;
 178 }
 179
 180  void wxComboBox::SetFocus()
 181  {
 182     m_text->SetFocus();
 183  }
 184
 185
 186 void wxComboBox::DelegateTextChanged( const wxString& value ) {
 187 }
 188
 189
 190 void wxComboBox::DelegateChoice( const wxString& value )
 191 {
 192     SetStringSelection( value );
 193 }
 194
 195
 196 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 197            const wxString& value,
 198            const wxPoint& pos,
 199            const wxSize& size,
 200            int n, const wxString choices[],
 201            long style,
 202            const wxValidator& validator,
 203            const wxString& name)
 204 {
 205
 206     Rect bounds ;
 207     Str255 title ;
 208
 209     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 210                             wxDefaultValidator, name) )
 211     {
 212         return FALSE;
 213     }
 214
 215     m_choice = new wxComboBoxChoice(this, style );
 216
 217     wxSize csize = size;
 218     if ( style & wxCB_READONLY )
 219     {
 220         m_text = 0;
 221     }
 222     else
 223     {
 224         m_text = new wxComboBoxText(this);
 225         if ( size.y == -1 ) {
 226           csize.y = m_text->GetSize().y ;
 227         }
 228     }
 229
 230     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 231
 232     for ( int i = 0 ; i < n ; i++ )
 233     {
 234         m_choice->DoAppend( choices[ i ] );
 235     }
 236
 237     return TRUE;
 238 }
 239
 240 wxString wxComboBox::GetValue() const
 241 {
 242     wxString        result;
 243
 244     if ( m_text == 0 )
 245     {
 246         result = m_choice->GetString( m_choice->GetSelection() );
 247     }
 248     else
 249     {
 250         result = m_text->GetValue();
 251     }
 252
 253     return result;
 254 }
 255
 256 void wxComboBox::SetValue(const wxString& value)
 257 {
 258     SetStringSelection( value ) ;
 259 }
 260
 261 // Clipboard operations
 262 void wxComboBox::Copy()
 263 {
 264     if ( m_text != 0 )
 265     {
 266         m_text->Copy();
 267     }
 268 }
 269
 270 void wxComboBox::Cut()
 271 {
 272     if ( m_text != 0 )
 273     {
 274         m_text->Cut();
 275     }
 276 }
 277
 278 void wxComboBox::Paste()
 279 {
 280     if ( m_text != 0 )
 281     {
 282         m_text->Paste();
 283     }
 284 }
 285
 286 void wxComboBox::SetEditable(bool editable)
 287 {
 288     if ( ( m_text == 0 ) && editable )
 289     {
 290         m_text = new wxComboBoxText( this );
 291     }
 292     else if ( ( m_text != 0 ) && !editable )
 293     {
 294         delete m_text;
 295         m_text = 0;
 296     }
 297
 298     int currentX, currentY;
 299     GetPosition( &currentX, &currentY );
 300
 301     int currentW, currentH;
 302     GetSize( &currentW, &currentH );
 303
 304     DoMoveWindow( currentX, currentY, currentW, currentH );
 305 }
 306
 307 void wxComboBox::SetInsertionPoint(long pos)
 308 {
 309     // TODO
 310 }
 311
 312 void wxComboBox::SetInsertionPointEnd()
 313 {
 314     // TODO
 315 }
 316
 317 long wxComboBox::GetInsertionPoint() const
 318 {
 319     // TODO
 320     return 0;
 321 }
 322
 323 long wxComboBox::GetLastPosition() const
 324 {
 325     // TODO
 326     return 0;
 327 }
 328
 329 void wxComboBox::Replace(long from, long to, const wxString& value)
 330 {
 331     // TODO
 332 }
 333
 334 void wxComboBox::Remove(long from, long to)
 335 {
 336     // TODO
 337 }
 338
 339 void wxComboBox::SetSelection(long from, long to)
 340 {
 341     // TODO
 342 }
 343
 344 void wxComboBox::Append(const wxString& item)
 345 {
 346     // I am not sure what other ports do,
 347     // but wxMac chokes on empty entries.
 348
 349     if (!item.IsEmpty())
 350         m_choice->DoAppend( item );
 351 }
 352
 353 void wxComboBox::Delete(int n)
 354 {
 355     m_choice->Delete( n );
 356 }
 357
 358 void wxComboBox::Clear()
 359 {
 360     m_choice->Clear();
 361 }
 362
 363 int wxComboBox::GetSelection() const
 364 {
 365     return m_choice->GetSelection();
 366 }
 367
 368 void wxComboBox::SetSelection(int n)
 369 {
 370     m_choice->SetSelection( n );
 371
 372     if ( m_text != 0 )
 373     {
 374         m_text->SetValue( GetString( n ) );
 375     }
 376 }
 377
 378 int wxComboBox::FindString(const wxString& s) const
 379 {
 380     return m_choice->FindString( s );
 381 }
 382
 383 wxString wxComboBox::GetString(int n) const
 384 {
 385     return m_choice->GetString( n );
 386 }
 387
 388 wxString wxComboBox::GetStringSelection() const
 389 {
 390     int sel = GetSelection ();
 391     if (sel > -1)
 392         return wxString(this->GetString (sel));
 393     else
 394         return wxString("");
 395 }
 396
 397 bool wxComboBox::SetStringSelection(const wxString& sel)
 398 {
 399     int s = FindString (sel);
 400     if (s > -1)
 401         {
 402             SetSelection (s);
 403             return TRUE;
 404         }
 405     else
 406         return FALSE;
 407 }
 408
 409 void wxComboBox::MacHandleControlClick( WXWidget control , wxInt16 controlpart )
 410 {
 411     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 412     event.SetInt(GetSelection());
 413     event.SetEventObject(this);
 414     event.SetString(GetStringSelection());
 415     ProcessCommand(event);
 416 }
 417