src/motif/combobox_native.cpp

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