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 #include "wx/arrstr.h"
  19
  20 #ifdef __VMS__
  21 #pragma message disable nosimpint
  22 #endif
  23 #include <Xm/Xm.h>
  24 #ifdef __VMS__
  25 #pragma message enable nosimpint
  26 #endif
  27
  28 // use the new, shiny combobox for Motif 2.x
  29 #if (XmVersion >= 2000)
  30
  31 #ifdef __VMS__
  32 #pragma message disable nosimpint
  33 #endif
  34 #include <Xm/ComboBox.h>
  35 #include <Xm/Text.h>
  36 #include <Xm/List.h>
  37 #ifdef __VMS__
  38 #pragma message enable nosimpint
  39 #endif
  40
  41 #include "wx/motif/private.h"
  42
  43 // utility
  44 static Widget GetXmList( const wxComboBox* cb )
  45 {
  46     Widget ret;
  47     XtVaGetValues( (Widget)cb->GetMainWidget(),
  48                    XmNlist, &ret,
  49                    NULL );
  50
  51     return ret;
  52 }
  53
  54 static Widget GetXmText( const wxComboBox* cb )
  55 {
  56     Widget ret;
  57     XtVaGetValues( (Widget)cb->GetMainWidget(),
  58                    XmNtextField, &ret,
  59                    NULL );
  60
  61     return ret;
  62 }
  63
  64 void  wxComboBoxCallback (Widget w, XtPointer clientData,
  65                           XmComboBoxCallbackStruct * cbs);
  66
  67 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  68
  69 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  70                         const wxString& value,
  71                         const wxPoint& pos,
  72                         const wxSize& size,
  73                         int n, const wxString choices[],
  74                         long style,
  75                         const wxValidator& validator,
  76                         const wxString& name)
  77 {
  78     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  79         return false;
  80
  81     Widget parentWidget = (Widget) parent->GetClientWidget();
  82
  83     int cb_type = ( style & wxCB_SIMPLE ) ? XmCOMBO_BOX :
  84                   ( style & wxCB_READONLY ) ? XmDROP_DOWN_LIST :
  85                   ( style & wxCB_DROPDOWN ) ? XmDROP_DOWN_COMBO_BOX :
  86     // default to wxCB_DROPDOWN
  87                                               XmDROP_DOWN_COMBO_BOX;
  88     if( cb_type == XmDROP_DOWN_COMBO_BOX )
  89         SetWindowStyle( style | wxCB_DROPDOWN );
  90
  91     Widget buttonWidget= XtVaCreateManagedWidget(name.c_str(),
  92         xmComboBoxWidgetClass, parentWidget,
  93         XmNcomboBoxType, cb_type,
  94         NULL);
  95
  96     m_mainWidget = (Widget) buttonWidget;
  97
  98     int i;
  99     for ( i = 0; i < n; ++i)
 100         Append( choices[i] );
 101
 102     XtManageChild (buttonWidget);
 103
 104     SetValue(value);
 105
 106     ChangeFont(false);
 107
 108     XtAddCallback (buttonWidget, XmNselectionCallback,
 109                    (XtCallbackProc) wxComboBoxCallback,
 110                    (XtPointer) this);
 111     XtAddCallback (GetXmText(this), XmNvalueChangedCallback,
 112                    (XtCallbackProc) wxComboBoxCallback,
 113                    (XtPointer) this);
 114
 115     wxSize best = GetBestSize();
 116     if( size.x != wxDefaultCoord ) best.x = size.x;
 117     if( size.y != wxDefaultCoord ) best.y = size.y;
 118
 119     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
 120                   pos.x, pos.y, best.x, best.y);
 121
 122     ChangeBackgroundColour();
 123
 124     return true;
 125 }
 126
 127 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 128                         const wxString& value,
 129                         const wxPoint& pos,
 130                         const wxSize& size,
 131                         const wxArrayString& choices,
 132                         long style,
 133                         const wxValidator& validator,
 134                         const wxString& name)
 135 {
 136     wxCArrayString chs(choices);
 137     return Create(parent, id, value, pos, size, chs.GetCount(),
 138                   chs.GetStrings(), style, validator, name);
 139 }
 140
 141 void wxComboBox::AdjustDropDownListSize()
 142 {
 143     int newListCount = -1, itemCount = GetCount();
 144     const int MAX = 12;
 145
 146     if( !itemCount )
 147         newListCount = 1;
 148     else if( itemCount < MAX )
 149         newListCount = itemCount;
 150     else
 151         newListCount = MAX;
 152
 153     XtVaSetValues( GetXmList(this),
 154                    XmNvisibleItemCount, newListCount,
 155                    NULL );
 156 }
 157
 158 wxComboBox::~wxComboBox()
 159 {
 160     DetachWidget((Widget) m_mainWidget); // Removes event handlers
 161     XtDestroyWidget((Widget) m_mainWidget);
 162     m_mainWidget = (WXWidget) 0;
 163     if ( HasClientObjectData() )
 164         m_clientDataDict.DestroyData();
 165 }
 166
 167 void wxComboBox::DoSetSize(int x, int y, int width, int WXUNUSED(height), int sizeFlags)
 168 {
 169     // Necessary so it doesn't call wxChoice::SetSize
 170     wxWindow::DoSetSize(x, y, width, DoGetBestSize().y, sizeFlags);
 171 }
 172
 173 wxString wxComboBox::GetValue() const
 174 {
 175     char* s = XmTextGetString (GetXmText (this));
 176     wxString str(s);
 177     if (s)
 178         XtFree (s);
 179     return str;
 180 }
 181
 182 void wxComboBox::SetString(unsigned int n, const wxString& s)
 183 {
 184     wxXmString text(s);
 185     Widget listBox = GetXmList(this);
 186
 187     // delete the item and add it again.
 188     // FIXME isn't there a way to change it in place?
 189     XmListDeletePos (listBox, n+1);
 190     XmListAddItem (listBox, text(), n+1);
 191 }
 192
 193 void wxComboBox::SetValue(const wxString& value)
 194 {
 195     m_inSetValue = true;
 196
 197     // Fix crash; probably an OpenMotif bug
 198     const char* val = value.c_str() ? value.c_str() : "";
 199     XtVaSetValues( GetXmText(this),
 200                    XmNvalue, wxConstCast(val, char),
 201                    NULL);
 202
 203     m_inSetValue = false;
 204 }
 205
 206 int wxComboBox::DoAppend(const wxString& item)
 207 {
 208     wxXmString str( item.c_str() );
 209     XmComboBoxAddItem((Widget) m_mainWidget, str(), 0, False);
 210     m_noStrings ++;
 211     AdjustDropDownListSize();
 212
 213     return GetCount() - 1;
 214 }
 215
 216 int wxComboBox::DoInsert(const wxString& item, unsigned int pos)
 217 {
 218     wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
 219     wxCHECK_MSG(IsValidInsert(pos), -1, wxT("invalid index"));
 220
 221     if (pos == GetCount())
 222         return DoAppend(item);
 223
 224     wxXmString str( item.c_str() );
 225     XmComboBoxAddItem((Widget) m_mainWidget, str(), pos+1, False);
 226     m_noStrings ++;
 227     AdjustDropDownListSize();
 228
 229     return GetCount() - 1;
 230 }
 231
 232 void wxComboBox::Delete(unsigned int n)
 233 {
 234 #ifdef LESSTIF_VERSION
 235     XmListDeletePos (GetXmList(this), n + 1);
 236 #else
 237     XmComboBoxDeletePos((Widget) m_mainWidget, n+1);
 238 #endif
 239
 240     m_clientDataDict.Delete(n, HasClientObjectData());
 241     m_noStrings--;
 242
 243     AdjustDropDownListSize();
 244 }
 245
 246 void wxComboBox::Clear()
 247 {
 248 #ifdef LESSTIF_VERSION
 249     XmListDeleteAllItems (GetXmList(this));
 250 #else
 251     while(m_noStrings > 0)
 252     {
 253         XmComboBoxDeletePos((Widget) m_mainWidget, m_noStrings--);
 254     }
 255 #endif
 256
 257     if ( HasClientObjectData() )
 258         m_clientDataDict.DestroyData();
 259     m_noStrings = 0;
 260     AdjustDropDownListSize();
 261 }
 262
 263 void wxComboBox::SetSelection (int n)
 264 {
 265     m_inSetSelection = true;
 266
 267 #if wxCHECK_LESSTIF()
 268     XmListSelectPos (GetXmList(this), n + 1, false);
 269     SetValue(GetString(n));
 270 #else
 271 #if 0
 272     wxXmString str(GetString(n).c_str());
 273     XmComboBoxSelectItem((Widget) m_mainWidget, str());
 274 #endif
 275     XtVaSetValues( (Widget)m_mainWidget,
 276                    XmNselectedPosition, n,
 277                    NULL );
 278 #endif
 279
 280     m_inSetSelection = false;
 281 }
 282
 283 int wxComboBox::GetSelection (void) const
 284 {
 285     return wxDoGetSelectionInList( GetXmList( this ) );
 286 }
 287
 288 wxString wxComboBox::GetString(unsigned int n) const
 289 {
 290     return wxDoGetStringInList( GetXmList(this), n );
 291 }
 292
 293 int wxComboBox::FindString(const wxString& s, bool WXUNUSED(bCase)) const
 294 {
 295     // FIXME: back to base class for not supported value of bCase
 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