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     SetFont(*wxSMALL_FONT);
 147
 148     int                             i;
 149
 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     return TRUE;
 169 } // end of wxComboBox::Create
 170
 171 void wxComboBox::SetValue(
 172   const wxString&                   rsValue
 173 )
 174 {
 175     //
 176     // If newlines are denoted by just 10, must stick 13 in front.
 177     //
 178     int                             nSingletons = 0;
 179     int                             nLen = rsValue.Length();
 180     int                             i;
 181
 182     for (i = 0; i < nLen; i ++)
 183     {
 184         if ((i > 0) && (rsValue[i] == 10) && (rsValue[i - 1] != 13))
 185             nSingletons ++;
 186     }
 187     if (nSingletons > 0)
 188     {
 189         wxChar*                     zTmp = new wxChar[nLen + nSingletons + 1];
 190         int                         j = 0;
 191
 192         for (i = 0; i < nLen; i ++)
 193         {
 194             if ((i > 0) && (rsValue[i] == 10) && (rsValue[i - 1] != 13))
 195             {
 196                 zTmp[j] = 13;
 197                 j++;
 198             }
 199             zTmp[j] = rsValue[i];
 200             j++;
 201         }
 202         zTmp[j] = 0;
 203         ::WinSetWindowText(GetHwnd(), zTmp);
 204         delete[] zTmp;
 205     }
 206     else
 207         ::WinSetWindowText(GetHwnd(), rsValue.c_str());
 208 } // end of wxComboBox::SetValue
 209
 210 //
 211 // Clipboard operations
 212 //
 213 void wxComboBox::Copy()
 214 {
 215     HWND                            hWnd = GetHwnd();
 216
 217     ::WinSendMsg(hWnd, EM_COPY, (MPARAM)0, (MPARAM)0);
 218 } // end of wxComboBox::Copy
 219
 220 void wxComboBox::Cut()
 221 {
 222     HWND                            hWnd = GetHwnd();
 223
 224     ::WinSendMsg(hWnd, EM_CUT, (MPARAM)0, (MPARAM)0);
 225 } // end of wxComboBox::Cut
 226
 227 void wxComboBox::Paste()
 228 {
 229     HWND                            hWnd = GetHwnd();
 230
 231     ::WinSendMsg(hWnd, EM_PASTE, (MPARAM)0, (MPARAM)0);
 232 } // end of wxComboBox::Paste
 233
 234 void wxComboBox::SetEditable(
 235   bool                              bEditable
 236 )
 237 {
 238     HWND                            hWnd = GetHwnd();
 239
 240     ::WinSendMsg(hWnd, EM_SETREADONLY, (MPARAM)!bEditable, (MPARAM)0L);
 241 } // end of wxComboBox::SetEditable
 242
 243 void wxComboBox::SetInsertionPoint(
 244   long                              lPos
 245 )
 246 {
 247     HWND                            hWnd = GetHwnd();
 248
 249     ::WinSendMsg(hWnd, EM_SETFIRSTCHAR, MPFROMLONG(lPos), (MPARAM)0);
 250 } // end of wxComboBox::SetInsertionPoint
 251
 252 void wxComboBox::SetInsertionPointEnd()
 253 {
 254     long                            lPos = GetLastPosition();
 255
 256     SetInsertionPoint(lPos);
 257 } // end of wxComboBox::SetInsertionPointEnd
 258
 259 long wxComboBox::GetInsertionPoint() const
 260 {
 261     long                            lPos = LONGFROMMR(::WinSendMsg( GetHwnd()
 262                                                                    ,LM_QUERYSELECTION
 263                                                                    ,(MPARAM)0
 264                                                                    ,(MPARAM)0
 265                                                                   ));
 266    if (lPos == LIT_NONE)
 267         return wxNOT_FOUND;
 268    return lPos;
 269 } // end of wxComboBox::GetInsertionPoint
 270
 271 long wxComboBox::GetLastPosition() const
 272 {
 273     HWND                            hEditWnd = GetHwnd();
 274     long                            lLineLength = 0L;
 275     WNDPARAMS                       vParams;
 276
 277     //
 278     // Get number of characters in the last (only) line. We'll add this to the character
 279     // index for the last line, 1st position.
 280     //
 281
 282
 283     vParams.fsStatus = WPM_CCHTEXT;
 284     if (::WinSendMsg( GetHwnd()
 285                      ,WM_QUERYWINDOWPARAMS
 286                      ,&vParams
 287                      ,0
 288                     ))
 289     {
 290         lLineLength = (long)vParams.cchText;
 291     }
 292     else
 293         lLineLength = 0L;
 294     return lLineLength;
 295 } // end of wxComboBox::GetLastPosition
 296
 297 void wxComboBox::Replace(
 298   long                              lFrom
 299 , long                              lTo
 300 , const wxString&                   rsValue
 301 )
 302 {
 303 #if wxUSE_CLIPBOARD
 304     HWND                            hWnd = GetHwnd();
 305     long                            lFromChar = lFrom;
 306     long                            lToChar = lTo;
 307
 308     //
 309     // Set selection and remove it
 310     //
 311     ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 312     ::WinSendMsg(hWnd, EM_CUT, (MPARAM)0, (MPARAM)0);
 313
 314     //
 315     // Now replace with 'value', by pasting.
 316     //
 317     wxSetClipboardData( wxDF_TEXT
 318                        ,(wxObject *)rsValue.c_str()
 319                        ,0
 320                        ,0
 321                       );
 322
 323     //
 324     // Paste into edit control
 325     //
 326     ::WinSendMsg(hWnd, EM_PASTE, (MPARAM)0, (MPARAM)0L);
 327 #endif
 328 } // end of wxComboBox::Replace
 329
 330 void wxComboBox::Remove(
 331   long                              lFrom
 332 , long                              lTo
 333 )
 334 {
 335 #if wxUSE_CLIPBOARD
 336     HWND                            hWnd = GetHwnd();
 337     long                            lFromChar = lFrom;
 338     long                            lToChar = lTo;
 339
 340     ::WinSendMsg(hWnd, EM_SETSEL, MPFROM2SHORT((USHORT)lFrom, (USHORT)lTo), 0);
 341     ::WinSendMsg(hWnd, EM_CUT, (MPARAM)0, (MPARAM)0);
 342 #endif
 343 } // end of wxComboBox::Remove
 344
 345 void wxComboBox::SetSelection(
 346   long                              lFrom
 347 , long                              lTo
 348 )
 349 {
 350     HWND                            hWnd = GetHwnd();
 351     long                            lFromChar = lFrom;
 352     long                            lToChar = lTo;
 353
 354     //
 355     // If from and to are both -1, it means
 356     // (in wxWindows) that all text should be selected.
 357     // This translates into Windows convention
 358     //
 359     if ((lFrom == -1L) && (lTo == -1L))
 360     {
 361         lFromChar = 0;
 362         lToChar = -1;
 363     }
 364
 365     ::WinSendMsg( hWnd
 366                  ,EM_SETSEL
 367                  ,MPFROM2SHORT((USHORT)lFromChar, (USHORT)lToChar)
 368                  ,(MPARAM)0
 369                 );
 370 } // end of wxComboBox::SetSelection
 371
 372 void wxComboBox::DoSetSize(
 373   int                               nX
 374 , int                               nY
 375 , int                               nWidth
 376 , int                               nHeight
 377 , int                               nSizeFlags
 378 )
 379 {
 380     wxControl::DoSetSize( nX
 381                          ,nY
 382                          ,nWidth
 383                          ,nHeight
 384                          ,nSizeFlags
 385                         );
 386 } // end of wxComboBox::DoSetSize
 387
 388 bool wxComboBox::ProcessEditMsg(
 389   WXUINT                            uMsg
 390 , WXWPARAM                          wParam
 391 , WXLPARAM                          lParam)
 392 {
 393     SHORT                           vFlag;
 394     switch (uMsg)
 395     {
 396         case WM_CHAR:
 397             vFlag = SHORT1FROMMP(wParam);
 398             switch(vFlag)
 399             {
 400                 case KC_CHAR:
 401                     return (HandleChar( SHORT1FROMMP(wParam)
 402                                        ,lParam
 403                                        ,TRUE /* isASCII */
 404                                       ));
 405
 406                 case KC_PREVDOWN:
 407                     return (HandleKeyDown( SHORT1FROMMP(wParam)
 408                                           ,lParam
 409                                          ));
 410
 411                 case KC_KEYUP:
 412                     return (HandleKeyUp( SHORT1FROMMP(wParam)
 413                                         ,lParam
 414                                        ));
 415             }
 416             break;
 417     }
 418     return FALSE;
 419 } // end of WinGuiBase_CComboBox::ProcessEditMsg
 420
 421 MRESULT EXPENTRY wxComboEditWndProc(
 422   HWND                              hWnd
 423 , UINT                              uMessage
 424 , MPARAM                            wParam
 425 , MPARAM                            lParam
 426 )
 427 {
 428     HWND                            hWndCombo;
 429     wxWindow*                       pWin = NULL;
 430
 431     hWndCombo = ::WinQueryWindow(hWnd, QW_PARENT);
 432     pWin = (wxWindow*)wxFindWinFromHandle((WXHWND)hWndCombo);
 433     switch (uMessage)
 434     {
 435         //
 436         // Forward some messages to the combobox
 437         //
 438         case WM_CHAR:
 439             {
 440                 wxComboBox*         pCombo = wxDynamicCast( pWin
 441                                                            ,wxComboBox
 442                                                           );
 443
 444                 if (pCombo->ProcessEditMsg( uMessage
 445                                            ,wParam
 446                                            ,lParam
 447                                           ))
 448                     return ((MRESULT)0);
 449             }
 450             break;
 451
 452         //
 453         // TODO: Deal with tooltips here
 454         //
 455     }
 456     return (gfnWndprocEdit(hWnd, (ULONG)uMessage, (MPARAM)wParam, (MPARAM)lParam));
 457 } // end of wxComboEditWndProc
 458
 459 #endif
 460  // wxUSE_COMBOBOX
 461