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