src/os2/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        combobox.cpp
   3 // Purpose:     wxComboBox class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/13/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/combobox.h"
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/setup.h"
  19     #include "wx/settings.h"
  20 #endif
  21
  22 #if wxUSE_COMBOBOX
  23
  24 #include "wx/combobox.h"
  25 #include "wx/clipbrd.h"
  26 #include "wx/os2/private.h"
  27
  28 #define OWNER_DRAWN_LISTBOX_EXTRA_SPACE    (1)
  29
  30 MRESULT EXPENTRY wxComboEditWndProc( HWND   hWnd
  31                                     ,UINT   uMessage
  32                                     ,MPARAM wParam
  33                                     ,MPARAM lParam
  34                                    );
  35 //
  36 // The pointer to standard wnd proc
  37 //
  38 static WXFARPROC gfnWndprocEdit     = (WXFARPROC)NULL;
  39
  40 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  41
  42 bool wxComboBox::OS2Command(
  43   WXUINT                            uParam
  44 , WXWORD                            WXUNUSED(wId)
  45 )
  46 {
  47     long                            lSel = -1L;
  48     wxString                        sValue;
  49
  50     switch (uParam)
  51     {
  52         case CBN_LBSELECT:
  53             if (GetSelection() > -1)
  54             {
  55                 wxCommandEvent      vEvent( wxEVT_COMMAND_COMBOBOX_SELECTED
  56                                            ,GetId()
  57                                           );
  58
  59                 vEvent.SetInt(GetSelection());
  60                 vEvent.SetEventObject(this);
  61                 vEvent.SetString((char*)GetStringSelection().c_str());
  62                 ProcessCommand(vEvent);
  63             }
  64             break;
  65
  66         case CBN_EFCHANGE:
  67             {
  68                 wxCommandEvent      vEvent( wxEVT_COMMAND_TEXT_UPDATED
  69                                            ,GetId()
  70                                           );
  71
  72                 if (lSel == -1L)
  73                     sValue = GetValue();
  74                 else
  75                     SetValue(sValue);
  76                 vEvent.SetString((char*)GetValue().c_str());
  77                 vEvent.SetEventObject(this);
  78                 ProcessCommand(vEvent);
  79             }
  80             break;
  81     }
  82     //
  83     // There is no return value for the CBN_ notifications, so always return
  84     // FALSE from here to pass the message to DefWindowProc()
  85     //
  86     return FALSE;
  87 } // end of wxComboBox::OS2Command
  88
  89 bool wxComboBox::Create(
  90   wxWindow*                         pParent
  91 , wxWindowID                        vId
  92 , const wxString&                   rsValue
  93 , const wxPoint&                    rPos
  94 , const wxSize&                     rSize
  95 , int                               n
  96 , const wxString                    asChoices[]
  97 , long                              lStyle
  98 #if wxUSE_VALIDATORS
  99 , const wxValidator&                rValidator
 100 #endif
 101 , const wxString&                   rsName
 102 )
 103 {
 104     m_isShown = FALSE;
 105
 106     if (!CreateControl( pParent
 107                        ,vId
 108                        ,rPos
 109                        ,rSize
 110                        ,lStyle
 111 #if wxUSE_VALIDATORS
 112                        ,rValidator
 113 #endif
 114                        ,rsName
 115                       ))
 116         return FALSE;
 117
 118     //
 119     // Get the right style
 120     //
 121     long                            lSstyle = 0L;
 122
 123     lSstyle = WS_TABSTOP   |
 124               WS_VISIBLE;
 125
 126     if (lStyle & wxCLIP_SIBLINGS )
 127         lSstyle |= WS_CLIPSIBLINGS;
 128     if (lStyle & wxCB_READONLY)
 129         lSstyle |= CBS_DROPDOWNLIST;
 130     else if (lStyle & wxCB_SIMPLE)
 131         lSstyle |= CBS_SIMPLE; // A list (shown always) and edit control
 132     else
 133         lSstyle |= CBS_DROPDOWN;
 134
 135
 136     if (!OS2CreateControl( "COMBOBOX"
 137                           ,lSstyle
 138                          ))
 139         return FALSE;
 140
 141     //
 142     // A choice/combobox normally has a white background (or other, depending
 143     // on global settings) rather than inheriting the parent's background colour.
 144     //
 145     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 146
 147     SetFont(*wxSMALL_FONT);
 148
 149     int                             i;
 150     for (i = 0; i < n; i++)
 151     {
 152         Append(asChoices[i]);
 153     }
 154
 155     SetSize( rPos.x
 156             ,rPos.y
 157             ,rSize.x
 158             ,rSize.y
 159            );
 160     if (!rsValue.IsEmpty())
 161     {
 162         SetValue(rsValue);
 163     }
 164     gfnWndprocEdit = (WXFARPROC)::WinSubclassWindow( (HWND)GetHwnd()
 165                                                     ,(PFNWP)wxComboEditWndProc
 166                                                    );
 167     ::WinSetWindowULong(GetHwnd(), QWL_USER, (ULONG)this);
 168     Show(TRUE);
 169     return TRUE;
 170 } // end of wxComboBox::Create
 171
 172 void wxComboBox::SetValue(
 173   const wxString&                   rsValue
 174 )
 175 {
 176     //
 177     // If newlines are denoted by just 10, must stick 13 in front.
 178     //
 179     int                             nSingletons = 0;
 180     int                             nLen = rsValue.Length();
 181     int                             i;
 182
 183     for (i = 0; i < nLen; i ++)
 184     {
 185         if ((i > 0) && (rsValue[i] == 10) && (rsValue[i - 1] != 13))
 186             nSingletons ++;
 187     }
 188     if (nSingletons > 0)
 189     {
 190         wxChar*                     zTmp = new wxChar[nLen + nSingletons + 1];
 191         int                         j = 0;
 192
 193         for (i = 0; i < nLen; i ++)
 194         {
 195             if ((i > 0) && (rsValue[i] == 10) && (rsValue[i - 1] != 13))
 196             {
 197                 zTmp[j] = 13;
 198                 j++;
 199             }
 200             zTmp[j] = rsValue[i];
 201             j++;
 202         }
 203         zTmp[j] = 0;
 204         ::WinSetWindowText(GetHwnd(), zTmp);
 205         delete[] zTmp;
 206     }
 207     else
 208         ::WinSetWindowText(GetHwnd(), rsValue.c_str());
 209 } // end of wxComboBox::SetValue
 210
 211 //
 212 // Clipboard operations
 213 //
 214 void wxComboBox::Copy()
 215 {
 216     HWND                            hWnd = GetHwnd();
 217
 218     ::WinSendMsg(hWnd, EM_COPY, (MPARAM)0, (MPARAM)0);
 219 } // end of wxComboBox::Copy
 220
 221 void wxComboBox::Cut()
 222 {
 223     HWND                            hWnd = GetHwnd();
 224
 225     ::WinSendMsg(hWnd, EM_CUT, (MPARAM)0, (MPARAM)0);
 226 } // end of wxComboBox::Cut
 227
 228 void wxComboBox::Paste()
 229 {
 230     HWND                            hWnd = GetHwnd();
 231
 232     ::WinSendMsg(hWnd, EM_PASTE, (MPARAM)0, (MPARAM)0);
 233 } // end of wxComboBox::Paste
 234
 235 void wxComboBox::SetEditable(
 236   bool                              bEditable
 237 )
 238 {
 239     HWND                            hWnd = GetHwnd();
 240
 241     ::WinSendMsg(hWnd, EM_SETREADONLY, (MPARAM)!bEditable, (MPARAM)0L);
 242 } // end of wxComboBox::SetEditable
 243
 244 void wxComboBox::SetInsertionPoint(
 245   long                              lPos
 246 )
 247 {
 248     HWND                            hWnd = GetHwnd();
 249
 250     ::WinSendMsg(hWnd, EM_SETFIRSTCHAR, MPFROMLONG(lPos), (MPARAM)0);
 251 } // end of wxComboBox::SetInsertionPoint
 252
 253 void wxComboBox::SetInsertionPointEnd()
 254 {
 255     long                            lPos = GetLastPosition();
 256
 257     SetInsertionPoint(lPos);
 258 } // end of wxComboBox::SetInsertionPointEnd
 259
 260 long wxComboBox::GetInsertionPoint() const
 261 {
 262     long                            lPos = LONGFROMMR(::WinSendMsg( GetHwnd()
 263                                                                    ,LM_QUERYSELECTION
 264                                                                    ,(MPARAM)0
 265                                                                    ,(MPARAM)0
 266                                                                   ));
 267    if (lPos == LIT_NONE)
 268         return wxNOT_FOUND;
 269    return lPos;
 270 } // end of wxComboBox::GetInsertionPoint
 271
 272 long wxComboBox::GetLastPosition() const
 273 {
 274     HWND                            hEditWnd = GetHwnd();
 275     long                            lLineLength = 0L;
 276     WNDPARAMS                       vParams;
 277
 278     //
 279     // Get number of characters in the last (only) line. We'll add this to the character
 280     // index for the last line, 1st position.
 281     //
 282
 283
 284     vParams.fsStatus = WPM_CCHTEXT;
 285     if (::WinSendMsg( GetHwnd()
 286                      ,WM_QUERYWINDOWPARAMS
 287                      ,&vParams
 288                      ,0
 289                     ))
 290     {
 291         lLineLength = (long)vParams.cchText;
 292     }
 293     else
 294         lLineLength = 0L;
 295     return lLineLength;
 296 } // end of wxComboBox::GetLastPosition
 297
 298 void wxComboBox::Replace(
 299   long                              lFrom
 300 , long                              lTo
 301 , const wxString&                   rsValue
 302 )
 303 {
 304 #if wxUSE_CLIPBOARD
 305     HWND                            hWnd = GetHwnd();
 306     long                            lFromChar = lFrom;
 307     long                            lToChar = lTo;
 308
 309     //
 310     // Set selection and remove it
 311     //
 312     ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 313     ::WinSendMsg(hWnd, EM_CUT, (MPARAM)0, (MPARAM)0);
 314
 315     //
 316     // Now replace with 'value', by pasting.
 317     //
 318     wxSetClipboardData( wxDF_TEXT
 319                        ,(wxObject *)rsValue.c_str()
 320                        ,0
 321                        ,0
 322                       );
 323
 324     //
 325     // Paste into edit control
 326     //
 327     ::WinSendMsg(hWnd, EM_PASTE, (MPARAM)0, (MPARAM)0L);
 328 #endif
 329 } // end of wxComboBox::Replace
 330
 331 void wxComboBox::Remove(
 332   long                              lFrom
 333 , long                              lTo
 334 )
 335 {
 336 #if wxUSE_CLIPBOARD
 337     HWND                            hWnd = GetHwnd();
 338     long                            lFromChar = lFrom;
 339     long                            lToChar = lTo;
 340
 341     ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 342     ::WinSendMsg(hWnd, EM_CUT, (MPARAM)0, (MPARAM)0);
 343 #endif
 344 } // end of wxComboBox::Remove
 345
 346 void wxComboBox::SetSelection(
 347   long                              lFrom
 348 , long                              lTo
 349 )
 350 {
 351     HWND                            hWnd = GetHwnd();
 352     long                            lFromChar = lFrom;
 353     long                            lToChar = lTo;
 354
 355     //
 356     // If from and to are both -1, it means
 357     // (in wxWindows) that all text should be selected.
 358     // This translates into Windows convention
 359     //
 360     if ((lFrom == -1L) && (lTo == -1L))
 361     {
 362         lFromChar = 0;
 363         lToChar = -1;
 364     }
 365
 366     ::WinSendMsg( hWnd
 367                  ,EM_SETSEL
 368                  ,MPFROM2SHORT((USHORT)lFromChar, (USHORT)lToChar)
 369                  ,(MPARAM)0
 370                 );
 371 } // end of wxComboBox::SetSelection
 372
 373 void wxComboBox::DoSetSize(
 374   int                               nX
 375 , int                               nY
 376 , int                               nWidth
 377 , int                               nHeight
 378 , int                               nSizeFlags
 379 )
 380 {
 381     wxControl::DoSetSize( nX
 382                          ,nY
 383                          ,nWidth
 384                          ,nHeight
 385                          ,nSizeFlags
 386                         );
 387 } // end of wxComboBox::DoSetSize
 388
 389 bool wxComboBox::ProcessEditMsg(
 390   WXUINT                            uMsg
 391 , WXWPARAM                          wParam
 392 , WXLPARAM                          lParam)
 393 {
 394     SHORT                           vFlag;
 395     switch (uMsg)
 396     {
 397         case WM_CHAR:
 398             vFlag = SHORT1FROMMP(wParam);
 399             switch(vFlag)
 400             {
 401                 case KC_CHAR:
 402                     return (HandleChar( wParam
 403                                        ,lParam
 404                                        ,TRUE /* isASCII */
 405                                       ));
 406
 407                 case KC_PREVDOWN:
 408                     return (HandleKeyDown( wParam
 409                                           ,lParam
 410                                          ));
 411
 412                 case KC_KEYUP:
 413                     return (HandleKeyUp( wParam
 414                                         ,lParam
 415                                        ));
 416             }
 417             break;
 418
 419         case WM_SETFOCUS:
 420             if (SHORT1FROMMP((MPARAM)lParam) == TRUE)
 421                 return(HandleSetFocus((WXHWND)(HWND)wParam));
 422             else
 423                 return(HandleKillFocus((WXHWND)(HWND)wParam));
 424             break;
 425     }
 426     return FALSE;
 427 } // end of WinGuiBase_CComboBox::ProcessEditMsg
 428
 429 MRESULT EXPENTRY wxComboEditWndProc(
 430   HWND                              hWnd
 431 , UINT                              uMessage
 432 , MPARAM                            wParam
 433 , MPARAM                            lParam
 434 )
 435 {
 436     HWND                            hWndCombo;
 437     wxWindow*                       pWin = NULL;
 438
 439     hWndCombo = ::WinQueryWindow(hWnd, QW_PARENT);
 440     pWin = (wxWindow*)wxFindWinFromHandle((WXHWND)hWndCombo);
 441     switch (uMessage)
 442     {
 443         //
 444         // Forward some messages to the combobox
 445         //
 446         case WM_SETFOCUS:
 447         case WM_CHAR:
 448             {
 449                 wxComboBox*         pCombo = wxDynamicCast( pWin
 450                                                            ,wxComboBox
 451                                                           );
 452
 453                 if (pCombo->ProcessEditMsg( uMessage
 454                                            ,wParam
 455                                            ,lParam
 456                                           ))
 457                     return ((MRESULT)0);
 458             }
 459             break;
 460
 461         //
 462         // TODO: Deal with tooltips here
 463         //
 464     }
 465     return (gfnWndprocEdit(hWnd, (ULONG)uMessage, (MPARAM)wParam, (MPARAM)lParam));
 466 } // end of wxComboEditWndProc
 467
 468 #endif
 469  // wxUSE_COMBOBOX
 470