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 LN_SELECT:
  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 EN_CHANGE:
  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
 105     if (!OS2CreateControl( pParent
 106                        ,vId
 107                        ,rPos
 108                        ,rSize
 109                        ,lStyle
 110 #if wxUSE_VALIDATORS
 111                        ,rValidator
 112 #endif
 113                        ,rsName
 114                       ))
 115         return FALSE;
 116
 117     //
 118     // Get the right style
 119     //
 120     long                            lSstyle = 0L;
 121
 122     lSstyle = WS_TABSTOP   |
 123               WS_VISIBLE;
 124
 125     if (lStyle & wxCLIP_SIBLINGS )
 126         lSstyle |= WS_CLIPSIBLINGS;
 127     if (lStyle & wxCB_READONLY)
 128         lSstyle |= CBS_DROPDOWNLIST;
 129     else if (lStyle & wxCB_SIMPLE)
 130         lSstyle |= CBS_SIMPLE; // A list (shown always) and edit control
 131     else
 132         lSstyle |= CBS_DROPDOWN;
 133
 134
 135     if (!OS2CreateControl( "COMBOBOX"
 136                           ,lSstyle
 137                          ))
 138         return FALSE;
 139
 140     //
 141     // A choice/combobox normally has a white background (or other, depending
 142     // on global settings) rather than inheriting the parent's background colour.
 143     //
 144     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 145
 146     wxFont*                          pTextFont = new wxFont( 10
 147                                                             ,wxMODERN
 148                                                             ,wxNORMAL
 149                                                             ,wxNORMAL
 150                                                            );
 151     SetFont(*pTextFont);
 152
 153     int                             i;
 154     for (i = 0; i < n; i++)
 155     {
 156         Append(asChoices[i]);
 157     }
 158
 159     SetSize( rPos.x
 160             ,rPos.y
 161             ,rSize.x
 162             ,rSize.y
 163            );
 164     if (!rsValue.IsEmpty())
 165     {
 166         SetValue(rsValue);
 167     }
 168     gfnWndprocEdit = (WXFARPROC)::WinSubclassWindow( (HWND)GetHwnd()
 169                                                     ,(PFNWP)wxComboEditWndProc
 170                                                    );
 171     ::WinSetWindowULong(GetHwnd(), QWL_USER, (ULONG)this);
 172     delete pTextFont;
 173     return TRUE;
 174 } // end of wxComboBox::Create
 175
 176 void wxComboBox::SetValue(
 177   const wxString&                   rsValue
 178 )
 179 {
 180     //
 181     // If newlines are denoted by just 10, must stick 13 in front.
 182     //
 183     int                             nSingletons = 0;
 184     int                             nLen = rsValue.Length();
 185     int                             i;
 186
 187     for (i = 0; i < nLen; i ++)
 188     {
 189         if ((i > 0) && (rsValue[i] == 10) && (rsValue[i - 1] != 13))
 190             nSingletons ++;
 191     }
 192     if (nSingletons > 0)
 193     {
 194         wxChar*                     zTmp = new wxChar[nLen + nSingletons + 1];
 195         int                         j = 0;
 196
 197         for (i = 0; i < nLen; i ++)
 198         {
 199             if ((i > 0) && (rsValue[i] == 10) && (rsValue[i - 1] != 13))
 200             {
 201                 zTmp[j] = 13;
 202                 j++;
 203             }
 204             zTmp[j] = rsValue[i];
 205             j++;
 206         }
 207         zTmp[j] = 0;
 208         ::WinSetWindowText(GetHwnd(), zTmp);
 209         delete[] zTmp;
 210     }
 211     else
 212         ::WinSetWindowText(GetHwnd(), rsValue.c_str());
 213 } // end of wxComboBox::SetValue
 214
 215 //
 216 // Clipboard operations
 217 //
 218 void wxComboBox::Copy()
 219 {
 220     HWND                            hWnd = GetHwnd();
 221
 222     ::WinSendMsg(hWnd, EM_COPY, (MPARAM)0, (MPARAM)0);
 223 } // end of wxComboBox::Copy
 224
 225 void wxComboBox::Cut()
 226 {
 227     HWND                            hWnd = GetHwnd();
 228
 229     ::WinSendMsg(hWnd, EM_CUT, (MPARAM)0, (MPARAM)0);
 230 } // end of wxComboBox::Cut
 231
 232 void wxComboBox::Paste()
 233 {
 234     HWND                            hWnd = GetHwnd();
 235
 236     ::WinSendMsg(hWnd, EM_PASTE, (MPARAM)0, (MPARAM)0);
 237 } // end of wxComboBox::Paste
 238
 239 void wxComboBox::SetEditable(
 240   bool                              bEditable
 241 )
 242 {
 243     HWND                            hWnd = GetHwnd();
 244
 245     ::WinSendMsg(hWnd, EM_SETREADONLY, (MPARAM)!bEditable, (MPARAM)0L);
 246 } // end of wxComboBox::SetEditable
 247
 248 void wxComboBox::SetInsertionPoint(
 249   long                              lPos
 250 )
 251 {
 252     HWND                            hWnd = GetHwnd();
 253
 254     ::WinSendMsg(hWnd, EM_SETFIRSTCHAR, MPFROMLONG(lPos), (MPARAM)0);
 255 } // end of wxComboBox::SetInsertionPoint
 256
 257 void wxComboBox::SetInsertionPointEnd()
 258 {
 259     long                            lPos = GetLastPosition();
 260
 261     SetInsertionPoint(lPos);
 262 } // end of wxComboBox::SetInsertionPointEnd
 263
 264 long wxComboBox::GetInsertionPoint() const
 265 {
 266     long                            lPos = LONGFROMMR(::WinSendMsg( GetHwnd()
 267                                                                    ,LM_QUERYSELECTION
 268                                                                    ,(MPARAM)0
 269                                                                    ,(MPARAM)0
 270                                                                   ));
 271    if (lPos == LIT_NONE)
 272         return wxNOT_FOUND;
 273    return lPos;
 274 } // end of wxComboBox::GetInsertionPoint
 275
 276 long wxComboBox::GetLastPosition() const
 277 {
 278     HWND                            hEditWnd = GetHwnd();
 279     long                            lLineLength = 0L;
 280     WNDPARAMS                       vParams;
 281
 282     //
 283     // Get number of characters in the last (only) line. We'll add this to the character
 284     // index for the last line, 1st position.
 285     //
 286
 287
 288     vParams.fsStatus = WPM_CCHTEXT;
 289     if (::WinSendMsg( GetHwnd()
 290                      ,WM_QUERYWINDOWPARAMS
 291                      ,&vParams
 292                      ,0
 293                     ))
 294     {
 295         lLineLength = (long)vParams.cchText;
 296     }
 297     else
 298         lLineLength = 0L;
 299     return lLineLength;
 300 } // end of wxComboBox::GetLastPosition
 301
 302 void wxComboBox::Replace(
 303   long                              lFrom
 304 , long                              lTo
 305 , const wxString&                   rsValue
 306 )
 307 {
 308 #if wxUSE_CLIPBOARD
 309     HWND                            hWnd = GetHwnd();
 310     long                            lFromChar = lFrom;
 311     long                            lToChar = lTo;
 312
 313     //
 314     // Set selection and remove it
 315     //
 316     ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 317     ::WinSendMsg(hWnd, EM_CUT, (MPARAM)0, (MPARAM)0);
 318
 319     //
 320     // Now replace with 'value', by pasting.
 321     //
 322     wxSetClipboardData( wxDF_TEXT
 323                        ,(wxObject *)rsValue.c_str()
 324                        ,0
 325                        ,0
 326                       );
 327
 328     //
 329     // Paste into edit control
 330     //
 331     ::WinSendMsg(hWnd, EM_PASTE, (MPARAM)0, (MPARAM)0L);
 332 #endif
 333 } // end of wxComboBox::Replace
 334
 335 void wxComboBox::Remove(
 336   long                              lFrom
 337 , long                              lTo
 338 )
 339 {
 340 #if wxUSE_CLIPBOARD
 341     HWND                            hWnd = GetHwnd();
 342     long                            lFromChar = lFrom;
 343     long                            lToChar = lTo;
 344
 345     ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 346     ::WinSendMsg(hWnd, EM_CUT, (MPARAM)0, (MPARAM)0);
 347 #endif
 348 } // end of wxComboBox::Remove
 349
 350 void wxComboBox::SetSelection(
 351   long                              lFrom
 352 , long                              lTo
 353 )
 354 {
 355     HWND                            hWnd = GetHwnd();
 356     long                            lFromChar = lFrom;
 357     long                            lToChar = lTo;
 358
 359     //
 360     // If from and to are both -1, it means
 361     // (in wxWindows) that all text should be selected.
 362     // This translates into Windows convention
 363     //
 364     if ((lFrom == -1L) && (lTo == -1L))
 365     {
 366         lFromChar = 0;
 367         lToChar = -1;
 368     }
 369
 370     ::WinSendMsg( hWnd
 371                  ,EM_SETSEL
 372                  ,MPFROM2SHORT((USHORT)lFromChar, (USHORT)lToChar)
 373                  ,(MPARAM)0
 374                 );
 375 } // end of wxComboBox::SetSelection
 376
 377 void wxComboBox::DoSetSize(
 378   int                               nX
 379 , int                               nY
 380 , int                               nWidth
 381 , int                               nHeight
 382 , int                               nSizeFlags
 383 )
 384 {
 385     wxControl::DoSetSize( nX
 386                          ,nY
 387                          ,nWidth
 388                          ,nHeight
 389                          ,nSizeFlags
 390                         );
 391 } // end of wxComboBox::DoSetSize
 392
 393 bool wxComboBox::ProcessEditMsg(
 394   WXUINT                            uMsg
 395 , WXWPARAM                          wParam
 396 , WXLPARAM                          lParam)
 397 {
 398     SHORT                           vFlag;
 399     switch (uMsg)
 400     {
 401         case WM_CHAR:
 402             vFlag = SHORT1FROMMP(wParam);
 403             switch(vFlag)
 404             {
 405                 case KC_CHAR:
 406                     return (HandleChar( SHORT1FROMMP(wParam)
 407                                        ,lParam
 408                                        ,TRUE /* isASCII */
 409                                       ));
 410
 411                 case KC_PREVDOWN:
 412                     return (HandleKeyDown( SHORT1FROMMP(wParam)
 413                                           ,lParam
 414                                          ));
 415
 416                 case KC_KEYUP:
 417                     return (HandleKeyUp( SHORT1FROMMP(wParam)
 418                                         ,lParam
 419                                        ));
 420             }
 421             break;
 422     }
 423     return FALSE;
 424 } // end of WinGuiBase_CComboBox::ProcessEditMsg
 425
 426 MRESULT EXPENTRY wxComboEditWndProc(
 427   HWND                              hWnd
 428 , UINT                              uMessage
 429 , MPARAM                            wParam
 430 , MPARAM                            lParam
 431 )
 432 {
 433     HWND                            hWndCombo;
 434     wxWindow*                       pWin = NULL;
 435
 436     hWndCombo = ::WinQueryWindow(hWnd, QW_PARENT);
 437     pWin = (wxWindow*)wxFindWinFromHandle((WXHWND)hWndCombo);
 438     switch (uMessage)
 439     {
 440         //
 441         // Forward some messages to the combobox
 442         //
 443         case WM_CHAR:
 444             {
 445                 wxComboBox*         pCombo = wxDynamicCast( pWin
 446                                                            ,wxComboBox
 447                                                           );
 448
 449                 if (pCombo->ProcessEditMsg( uMessage
 450                                            ,wParam
 451                                            ,lParam
 452                                           ))
 453                     return ((MRESULT)0);
 454             }
 455             break;
 456
 457         //
 458         // TODO: Deal with tooltips here
 459         //
 460     }
 461     return (gfnWndprocEdit(hWnd, (ULONG)uMessage, (MPARAM)wParam, (MPARAM)lParam));
 462 } // end of wxComboEditWndProc
 463
 464 #endif
 465  // wxUSE_COMBOBOX
 466