src/motif/combobox_native.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        combobox_native.cpp
   3 // Purpose:     wxComboBox class
   4 // Author:      Julian Smart, Ian Brown
   5 // Modified by:
   6 // Created:     01/02/03
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #include "wx/setup.h"
  16
  17 #if wxUSE_COMBOBOX
  18
  19 #include "wx/combobox.h"
  20 #include "wx/arrstr.h"
  21
  22 #ifdef __VMS__
  23 #pragma message disable nosimpint
  24 #endif
  25 #include <Xm/Xm.h>
  26 #ifdef __VMS__
  27 #pragma message enable nosimpint
  28 #endif
  29
  30 // use the new, shiny combobox for Motif 2.x
  31 #if (XmVersion >= 2000)
  32
  33 #ifdef __VMS__
  34 #pragma message disable nosimpint
  35 #endif
  36 #include <Xm/ComboBox.h>
  37 #include <Xm/Text.h>
  38 #include <Xm/List.h>
  39 #ifdef __VMS__
  40 #pragma message enable nosimpint
  41 #endif
  42
  43 #include "wx/motif/private.h"
  44
  45 // utility
  46 static Widget GetXmList( const wxComboBox* cb )
  47 {
  48     Widget ret;
  49     XtVaGetValues( (Widget)cb->GetMainWidget(),
  50                    XmNlist, &ret,
  51                    NULL );
  52
  53     return ret;
  54 }
  55
  56 static Widget GetXmText( const wxComboBox* cb )
  57 {
  58     Widget ret;
  59     XtVaGetValues( (Widget)cb->GetMainWidget(),
  60                    XmNtextField, &ret,
  61                    NULL );
  62
  63     return ret;
  64 }
  65
  66 void  wxComboBoxCallback (Widget w, XtPointer clientData,
  67                           XmComboBoxCallbackStruct * cbs);
  68
  69 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  70
  71 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  72                         const wxString& value,
  73                         const wxPoint& pos,
  74                         const wxSize& size,
  75                         int n, const wxString choices[],
  76                         long style,
  77                         const wxValidator& validator,
  78                         const wxString& name)
  79 {
  80     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  81         return false;
  82
  83     Widget parentWidget = (Widget) parent->GetClientWidget();
  84
  85     int cb_type = ( style & wxCB_SIMPLE ) ? XmCOMBO_BOX :
  86                   ( style & wxCB_READONLY ) ? XmDROP_DOWN_LIST :
  87                   ( style & wxCB_DROPDOWN ) ? XmDROP_DOWN_COMBO_BOX :
  88     // default to wxCB_DROPDOWN
  89                                               XmDROP_DOWN_COMBO_BOX;
  90     if( cb_type == XmDROP_DOWN_COMBO_BOX )
  91         SetWindowStyle( style | wxCB_DROPDOWN );
  92
  93     Widget buttonWidget= XtVaCreateManagedWidget(name.c_str(),
  94         xmComboBoxWidgetClass, parentWidget,
  95         XmNcomboBoxType, cb_type,
  96         NULL);
  97
  98     m_mainWidget = (Widget) buttonWidget;
  99
 100     int i;
 101     for ( i = 0; i < n; ++i)
 102         Append( choices[i] );
 103
 104     XtManageChild (buttonWidget);
 105
 106     SetValue(value);
 107
 108     ChangeFont(false);
 109
 110     XtAddCallback (buttonWidget, XmNselectionCallback,
 111                    (XtCallbackProc) wxComboBoxCallback,
 112                    (XtPointer) this);
 113     XtAddCallback (GetXmText(this), XmNvalueChangedCallback,
 114                    (XtCallbackProc) wxComboBoxCallback,
 115                    (XtPointer) this);
 116
 117     wxSize best = GetBestSize();
 118     if( size.x != -1 ) best.x = size.x;
 119     if( size.y != -1 ) best.y = size.y;
 120
 121     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
 122                   pos.x, pos.y, best.x, best.y);
 123
 124     ChangeBackgroundColour();
 125
 126     return true;
 127 }
 128
 129 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 130                         const wxString& value,
 131                         const wxPoint& pos,
 132                         const wxSize& size,
 133                         const wxArrayString& choices,
 134                         long style,
 135                         const wxValidator& validator,
 136                         const wxString& name)
 137 {
 138     wxCArrayString chs(choices);
 139     return Create(parent, id, value, pos, size, chs.GetCount(),
 140                   chs.GetStrings(), style, validator, name);
 141 }
 142
 143 void wxComboBox::AdjustDropDownListSize()
 144 {
 145     int newListCount = -1, itemCount = GetCount();
 146     const int MAX = 12;
 147
 148     if( !itemCount )
 149         newListCount = 1;
 150     else if( itemCount < MAX )
 151         newListCount = itemCount;
 152     else
 153         newListCount = MAX;
 154
 155     XtVaSetValues( GetXmList(this),
 156                    XmNvisibleItemCount, newListCount,
 157                    NULL );
 158 }
 159
 160 wxComboBox::~wxComboBox()
 161 {
 162     DetachWidget((Widget) m_mainWidget); // Removes event handlers
 163     XtDestroyWidget((Widget) m_mainWidget);
 164     m_mainWidget = (WXWidget) 0;
 165     if ( HasClientObjectData() )
 166         m_clientDataDict.DestroyData();
 167 }
 168
 169 void wxComboBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 170 {
 171     // Necessary so it doesn't call wxChoice::SetSize
 172     wxWindow::DoSetSize(x, y, width, DoGetBestSize().y, sizeFlags);
 173 }
 174
 175 wxString wxComboBox::GetValue() const
 176 {
 177     char* s = XmTextGetString (GetXmText (this));
 178     wxString str(s);
 179     if (s)
 180         XtFree (s);
 181     return str;
 182 }
 183
 184 void wxComboBox::SetString(int n, const wxString& s)
 185 {
 186     wxXmString text(s);
 187     Widget listBox = GetXmList(this);
 188
 189     // delete the item and add it again.
 190     // FIXME isn't there a way to change it in place?
 191     XmListDeletePos (listBox, n+1);
 192     XmListAddItem (listBox, text(), n+1);
 193 }
 194
 195 void wxComboBox::SetValue(const wxString& value)
 196 {
 197     m_inSetValue = true;
 198
 199     // Fix crash; probably an OpenMotif bug
 200     const char* val = value.c_str() ? value.c_str() : "";
 201     XtVaSetValues( GetXmText(this),
 202                    XmNvalue, wxConstCast(val, char),
 203                    NULL);
 204
 205     m_inSetValue = false;
 206 }
 207
 208 int wxComboBox::DoAppend(const wxString& item)
 209 {
 210     wxXmString str( item.c_str() );
 211     XmComboBoxAddItem((Widget) m_mainWidget, str(), 0, False);
 212     m_noStrings ++;
 213     AdjustDropDownListSize();
 214
 215     return GetCount() - 1;
 216 }
 217
 218 int wxComboBox::DoInsert(const wxString& item, int pos)
 219 {
 220     wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
 221     wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
 222
 223     if (pos == GetCount())
 224         return DoAppend(item);
 225
 226     wxXmString str( item.c_str() );
 227     XmComboBoxAddItem((Widget) m_mainWidget, str(), pos+1, False);
 228     m_noStrings ++;
 229     AdjustDropDownListSize();
 230
 231     return GetCount() - 1;
 232 }
 233
 234 void wxComboBox::Delete(int n)
 235 {
 236 #ifdef LESSTIF_VERSION
 237     XmListDeletePos (GetXmList(this), n + 1);
 238 #else
 239     XmComboBoxDeletePos((Widget) m_mainWidget, n+1);
 240 #endif
 241
 242     m_clientDataDict.Delete(n, HasClientObjectData());
 243     m_noStrings--;
 244
 245     AdjustDropDownListSize();
 246 }
 247
 248 void wxComboBox::Clear()
 249 {
 250 #ifdef LESSTIF_VERSION
 251     XmListDeleteAllItems (GetXmList(this));
 252 #else
 253     while(m_noStrings > 0)
 254     {
 255         XmComboBoxDeletePos((Widget) m_mainWidget, m_noStrings--);
 256     }
 257 #endif
 258
 259     if ( HasClientObjectData() )
 260         m_clientDataDict.DestroyData();
 261     m_noStrings = 0;
 262     AdjustDropDownListSize();
 263 }
 264
 265 void wxComboBox::SetSelection (int n)
 266 {
 267     m_inSetSelection = true;
 268
 269 #if wxCHECK_LESSTIF()
 270     XmListSelectPos (GetXmList(this), n + 1, false);
 271     SetValue(GetString(n));
 272 #else
 273 #if 0
 274     wxXmString str( GetString(n).c_str() );
 275     XmComboBoxSelectItem((Widget) m_mainWidget, str());
 276 #endif
 277     XtVaSetValues( (Widget)m_mainWidget,
 278                    XmNselectedPosition, n,
 279                    NULL );
 280 #endif
 281
 282     m_inSetSelection = false;
 283 }
 284
 285 int wxComboBox::GetSelection (void) const
 286 {
 287     return wxDoGetSelectionInList( GetXmList( this ) );
 288 }
 289
 290 wxString wxComboBox::GetString(int n) const
 291 {
 292     return wxDoGetStringInList( GetXmList(this), n );
 293 }
 294
 295 int wxComboBox::FindString(const wxString& s) const
 296 {
 297     return wxDoFindStringInList( GetXmList( this ), s );
 298 }
 299
 300 // Clipboard operations
 301 void wxComboBox::Copy()
 302 {
 303     XmTextCopy( GetXmText(this), CurrentTime );
 304 }
 305
 306 void wxComboBox::Cut()
 307 {
 308     XmTextCut( GetXmText(this), CurrentTime );
 309 }
 310
 311 void wxComboBox::Paste()
 312 {
 313     XmTextPaste( GetXmText(this) );
 314 }
 315
 316 void wxComboBox::SetEditable(bool WXUNUSED(editable))
 317 {
 318     // TODO
 319 }
 320
 321 void wxComboBox::SetInsertionPoint(long pos)
 322 {
 323     XmTextSetInsertionPosition( GetXmText(this), (XmTextPosition)pos );
 324 }
 325
 326 void wxComboBox::SetInsertionPointEnd()
 327 {
 328     SetInsertionPoint( GetLastPosition() );
 329 }
 330
 331 long wxComboBox::GetInsertionPoint() const
 332 {
 333     return (long)XmTextGetInsertionPosition( GetXmText(this) );
 334 }
 335
 336 wxTextPos wxComboBox::GetLastPosition() const
 337 {
 338     XmTextPosition pos = XmTextGetLastPosition( GetXmText(this) );
 339     return (long)pos;
 340 }
 341
 342 void wxComboBox::Replace(long from, long to, const wxString& value)
 343 {
 344     XmTextReplace( GetXmText(this), (XmTextPosition)from, (XmTextPosition)to,
 345                    wxConstCast(value.c_str(), char) );
 346 }
 347
 348 void wxComboBox::Remove(long from, long to)
 349 {
 350     SetSelection( from, to );
 351     XmTextRemove( GetXmText(this) );
 352 }
 353
 354 void wxComboBox::SetSelection(long from, long to)
 355 {
 356     if( to == -1 )
 357         to = GetLastPosition();
 358
 359     XmTextSetSelection( GetXmText(this), (XmTextPosition)from,
 360                         (XmTextPosition)to, (Time)0 );
 361 }
 362
 363 void  wxComboBoxCallback (Widget WXUNUSED(w), XtPointer clientData,
 364                           XmComboBoxCallbackStruct * cbs)
 365 {
 366     wxComboBox *item = (wxComboBox *) clientData;
 367
 368     if( item->m_inSetSelection ) return;
 369
 370     switch (cbs->reason)
 371     {
 372     case XmCR_SELECT:
 373 #if 0
 374     case XmCR_SINGLE_SELECT:
 375     case XmCR_BROWSE_SELECT:
 376 #endif
 377         {
 378             wxCommandEvent event (wxEVT_COMMAND_COMBOBOX_SELECTED,
 379                                   item->GetId());
 380             int idx = cbs->item_position;
 381             event.SetInt(idx);
 382             event.SetString( item->GetString (idx) );
 383             if ( item->HasClientObjectData() )
 384                 event.SetClientObject( item->GetClientObject(idx) );
 385             else if ( item->HasClientUntypedData() )
 386                 event.SetClientData( item->GetClientData(idx) );
 387             event.SetExtraLong(true);
 388             event.SetEventObject(item);
 389             item->GetEventHandler()->ProcessEvent(event);
 390             break;
 391         }
 392     case XmCR_VALUE_CHANGED:
 393         {
 394             wxCommandEvent event (wxEVT_COMMAND_TEXT_UPDATED, item->GetId());
 395             event.SetInt(-1);
 396             event.SetString( item->GetValue() );
 397             event.SetExtraLong(true);
 398             event.SetEventObject(item);
 399             item->GetEventHandler()->ProcessEvent(event);
 400             break;
 401         }
 402     default:
 403         break;
 404     }
 405 }
 406
 407 void wxComboBox::ChangeFont(bool keepOriginalSize)
 408 {
 409     if( m_font.Ok() )
 410     {
 411         wxDoChangeFont( GetXmText(this), m_font );
 412         wxDoChangeFont( GetXmList(this), m_font );
 413     }
 414
 415     // Don't use the base class wxChoice's ChangeFont
 416     wxWindow::ChangeFont(keepOriginalSize);
 417 }
 418
 419 void wxComboBox::ChangeBackgroundColour()
 420 {
 421     wxWindow::ChangeBackgroundColour();
 422 }
 423
 424 void wxComboBox::ChangeForegroundColour()
 425 {
 426     wxWindow::ChangeForegroundColour();
 427 }
 428
 429 wxSize wxComboBox::DoGetBestSize() const
 430 {
 431     if( (GetWindowStyle() & wxCB_DROPDOWN) == wxCB_DROPDOWN ||
 432         (GetWindowStyle() & wxCB_READONLY) == wxCB_READONLY )
 433     {
 434         Dimension arrowW, arrowS, highlight, xmargin, ymargin, shadow;
 435
 436         XtVaGetValues( (Widget)m_mainWidget,
 437                        XmNarrowSize, &arrowW,
 438                        XmNarrowSpacing, &arrowS,
 439                        XmNhighlightThickness, &highlight,
 440                        XmNmarginWidth, &xmargin,
 441                        XmNmarginHeight, &ymargin,
 442                        XmNshadowThickness, &shadow,
 443                        NULL );
 444
 445         wxSize listSize = wxDoGetListBoxBestSize( GetXmList(this), this );
 446         wxSize textSize = wxDoGetSingleTextCtrlBestSize( GetXmText(this),
 447                                                          this );
 448
 449         // FIXME arbitrary constants
 450         return wxSize( listSize.x + arrowW + arrowS + 2 * highlight
 451                                   + 2 * shadow + 2 * xmargin ,
 452                        textSize.y + 2 * highlight + 2 * ymargin + 2 * shadow );
 453     }
 454     else
 455         return wxWindow::DoGetBestSize();
 456 }
 457
 458 #endif // XmVersion >= 2000
 459
 460 #endif // wxUSE_COMBOBOX