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