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     PreCreation();
  84
  85     Widget parentWidget = (Widget) parent->GetClientWidget();
  86
  87     int cb_type = ( style & wxCB_SIMPLE ) ? XmCOMBO_BOX :
  88                   ( style & wxCB_READONLY ) ? XmDROP_DOWN_LIST :
  89                   ( style & wxCB_DROPDOWN ) ? XmDROP_DOWN_COMBO_BOX :
  90     // default to wxCB_DROPDOWN
  91                                               XmDROP_DOWN_COMBO_BOX;
  92     if( cb_type == XmDROP_DOWN_COMBO_BOX )
  93         SetWindowStyle( style | wxCB_DROPDOWN );
  94
  95     Widget buttonWidget= XtVaCreateManagedWidget(name.c_str(),
  96         xmComboBoxWidgetClass, parentWidget,
  97         XmNcomboBoxType, cb_type,
  98         NULL);
  99
 100     m_mainWidget = (Widget) buttonWidget;
 101
 102     int i;
 103     for ( i = 0; i < n; ++i)
 104         Append( choices[i] );
 105
 106     XtManageChild (buttonWidget);
 107
 108     SetValue(value);
 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 != wxDefaultCoord ) best.x = size.x;
 119     if( size.y != wxDefaultCoord ) best.y = size.y;
 120
 121     PostCreation();
 122     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
 123                   pos.x, pos.y, best.x, best.y);
 124
 125     return true;
 126 }
 127
 128 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 129                         const wxString& value,
 130                         const wxPoint& pos,
 131                         const wxSize& size,
 132                         const wxArrayString& choices,
 133                         long style,
 134                         const wxValidator& validator,
 135                         const wxString& name)
 136 {
 137     wxCArrayString chs(choices);
 138     return Create(parent, id, value, pos, size, chs.GetCount(),
 139                   chs.GetStrings(), style, validator, name);
 140 }
 141
 142 void wxComboBox::AdjustDropDownListSize()
 143 {
 144     int newListCount = -1, itemCount = GetCount();
 145     const int MAX = 12;
 146
 147     if( !itemCount )
 148         newListCount = 1;
 149     else if( itemCount < MAX )
 150         newListCount = itemCount;
 151     else
 152         newListCount = MAX;
 153
 154     XtVaSetValues( GetXmList(this),
 155                    XmNvisibleItemCount, newListCount,
 156                    NULL );
 157 }
 158
 159 wxComboBox::~wxComboBox()
 160 {
 161     DetachWidget((Widget) m_mainWidget); // Removes event handlers
 162     XtDestroyWidget((Widget) m_mainWidget);
 163     m_mainWidget = (WXWidget) 0;
 164 }
 165
 166 void wxComboBox::DoSetSize(int x, int y, int width, int WXUNUSED(height), int sizeFlags)
 167 {
 168     // Necessary so it doesn't call wxChoice::SetSize
 169     wxWindow::DoSetSize(x, y, width, DoGetBestSize().y, sizeFlags);
 170 }
 171
 172 wxString wxComboBox::GetValue() const
 173 {
 174     char* s = XmTextGetString (GetXmText (this));
 175     wxString str(s);
 176     if (s)
 177         XtFree (s);
 178     return str;
 179 }
 180
 181 void wxComboBox::SetString(unsigned int n, const wxString& s)
 182 {
 183     wxXmString text(s);
 184     Widget listBox = GetXmList(this);
 185
 186     // delete the item and add it again.
 187     // FIXME isn't there a way to change it in place?
 188     XmListDeletePos (listBox, n+1);
 189     XmListAddItem (listBox, text(), n+1);
 190 }
 191
 192 void wxComboBox::SetValue(const wxString& value)
 193 {
 194     m_inSetValue = true;
 195
 196     XtVaSetValues( GetXmText(this),
 197                    XmNvalue, (const char*)value.mb_str(),
 198                    NULL);
 199
 200     m_inSetValue = false;
 201 }
 202
 203 int wxComboBox::DoInsertItems(const wxArrayStringsAdapter & items,
 204                               unsigned int pos,
 205                               void **clientData, wxClientDataType type)
 206 {
 207     const unsigned int numItems = items.GetCount();
 208
 209     AllocClientData(numItems);
 210     for ( unsigned int i = 0; i < numItems; ++i, ++pos )
 211     {
 212         wxXmString str( items[i].c_str() );
 213         XmComboBoxAddItem((Widget) m_mainWidget, str(),
 214                           GetMotifPosition(pos), False);
 215         m_noStrings ++;
 216         InsertNewItemClientData(pos, clientData, i, type);
 217     }
 218
 219     AdjustDropDownListSize();
 220
 221     return pos - 1;
 222 }
 223
 224 void wxComboBox::DoDeleteOneItem(unsigned int n)
 225 {
 226 #ifdef LESSTIF_VERSION
 227     XmListDeletePos (GetXmList(this), n + 1);
 228 #else
 229     XmComboBoxDeletePos((Widget) m_mainWidget, n+1);
 230 #endif
 231
 232     wxControlWithItems::DoDeleteOneItem(n);
 233     m_noStrings--;
 234
 235     AdjustDropDownListSize();
 236 }
 237
 238 void wxComboBox::DoClear()
 239 {
 240 #ifdef LESSTIF_VERSION
 241     XmListDeleteAllItems (GetXmList(this));
 242 #else
 243     while(m_noStrings > 0)
 244     {
 245         XmComboBoxDeletePos((Widget) m_mainWidget, m_noStrings--);
 246     }
 247 #endif
 248
 249     wxControlWithItems::DoClear();
 250     m_noStrings = 0;
 251     AdjustDropDownListSize();
 252 }
 253
 254 void wxComboBox::SetSelection (int n)
 255 {
 256     m_inSetSelection = true;
 257
 258 #if wxCHECK_LESSTIF()
 259     XmListSelectPos (GetXmList(this), n + 1, false);
 260     SetValue(GetString(n));
 261 #else
 262 #if 0
 263     wxXmString str(GetString(n).c_str());
 264     XmComboBoxSelectItem((Widget) m_mainWidget, str());
 265 #endif
 266     XtVaSetValues( (Widget)m_mainWidget,
 267                    XmNselectedPosition, n,
 268                    NULL );
 269 #endif
 270
 271     m_inSetSelection = false;
 272 }
 273
 274 int wxComboBox::GetSelection (void) const
 275 {
 276     return wxDoGetSelectionInList( GetXmList( this ) );
 277 }
 278
 279 wxString wxComboBox::GetString(unsigned int n) const
 280 {
 281     return wxDoGetStringInList( GetXmList(this), n );
 282 }
 283
 284 int wxComboBox::FindString(const wxString& s, bool WXUNUSED(bCase)) const
 285 {
 286     // FIXME: back to base class for not supported value of bCase
 287
 288     return wxDoFindStringInList( GetXmList( this ), s );
 289 }
 290
 291 // Clipboard operations
 292 void wxComboBox::Copy()
 293 {
 294     XmTextCopy( GetXmText(this), CurrentTime );
 295 }
 296
 297 void wxComboBox::Cut()
 298 {
 299     XmTextCut( GetXmText(this), CurrentTime );
 300 }
 301
 302 void wxComboBox::Paste()
 303 {
 304     XmTextPaste( GetXmText(this) );
 305 }
 306
 307 void wxComboBox::SetEditable(bool WXUNUSED(editable))
 308 {
 309     // TODO
 310 }
 311
 312 void wxComboBox::SetInsertionPoint(long pos)
 313 {
 314     XmTextSetInsertionPosition( GetXmText(this), (XmTextPosition)pos );
 315 }
 316
 317 void wxComboBox::SetInsertionPointEnd()
 318 {
 319     SetInsertionPoint( GetLastPosition() );
 320 }
 321
 322 long wxComboBox::GetInsertionPoint() const
 323 {
 324     return (long)XmTextGetInsertionPosition( GetXmText(this) );
 325 }
 326
 327 wxTextPos wxComboBox::GetLastPosition() const
 328 {
 329     XmTextPosition pos = XmTextGetLastPosition( GetXmText(this) );
 330     return (long)pos;
 331 }
 332
 333 void wxComboBox::Replace(long from, long to, const wxString& value)
 334 {
 335     XmTextReplace( GetXmText(this), (XmTextPosition)from, (XmTextPosition)to,
 336                    value.char_str() );
 337 }
 338
 339 void wxComboBox::Remove(long from, long to)
 340 {
 341     SetSelection( from, to );
 342     XmTextRemove( GetXmText(this) );
 343 }
 344
 345 void wxComboBox::SetSelection(long from, long to)
 346 {
 347     if( to == -1 )
 348         to = GetLastPosition();
 349
 350     XmTextSetSelection( GetXmText(this), (XmTextPosition)from,
 351                         (XmTextPosition)to, (Time)0 );
 352 }
 353
 354 void  wxComboBoxCallback (Widget WXUNUSED(w), XtPointer clientData,
 355                           XmComboBoxCallbackStruct * cbs)
 356 {
 357     wxComboBox *item = (wxComboBox *) clientData;
 358
 359     if( item->m_inSetSelection ) return;
 360
 361     switch (cbs->reason)
 362     {
 363     case XmCR_SELECT:
 364 #if 0
 365     case XmCR_SINGLE_SELECT:
 366     case XmCR_BROWSE_SELECT:
 367 #endif
 368         {
 369             wxCommandEvent event (wxEVT_COMMAND_COMBOBOX_SELECTED,
 370                                   item->GetId());
 371             int idx = cbs->item_position;
 372             event.SetInt(idx);
 373             event.SetString( item->GetString (idx) );
 374             if ( item->HasClientObjectData() )
 375                 event.SetClientObject( item->GetClientObject(idx) );
 376             else if ( item->HasClientUntypedData() )
 377                 event.SetClientData( item->GetClientData(idx) );
 378             event.SetExtraLong(true);
 379             event.SetEventObject(item);
 380             item->GetEventHandler()->ProcessEvent(event);
 381             break;
 382         }
 383     case XmCR_VALUE_CHANGED:
 384         {
 385             wxCommandEvent event (wxEVT_COMMAND_TEXT_UPDATED, item->GetId());
 386             event.SetInt(-1);
 387             event.SetString( item->GetValue() );
 388             event.SetExtraLong(true);
 389             event.SetEventObject(item);
 390             item->GetEventHandler()->ProcessEvent(event);
 391             break;
 392         }
 393     default:
 394         break;
 395     }
 396 }
 397
 398 void wxComboBox::ChangeFont(bool keepOriginalSize)
 399 {
 400     if( m_font.Ok() && m_mainWidget != NULL )
 401     {
 402         wxDoChangeFont( GetXmText(this), m_font );
 403         wxDoChangeFont( GetXmList(this), m_font );
 404     }
 405
 406     // Don't use the base class wxChoice's ChangeFont
 407     wxWindow::ChangeFont(keepOriginalSize);
 408 }
 409
 410 void wxComboBox::ChangeBackgroundColour()
 411 {
 412     wxWindow::ChangeBackgroundColour();
 413 }
 414
 415 void wxComboBox::ChangeForegroundColour()
 416 {
 417     wxWindow::ChangeForegroundColour();
 418 }
 419
 420 wxSize wxComboBox::DoGetBestSize() const
 421 {
 422     if( (GetWindowStyle() & wxCB_DROPDOWN) == wxCB_DROPDOWN ||
 423         (GetWindowStyle() & wxCB_READONLY) == wxCB_READONLY )
 424     {
 425         Dimension arrowW, arrowS, highlight, xmargin, ymargin, shadow;
 426
 427         XtVaGetValues( (Widget)m_mainWidget,
 428                        XmNarrowSize, &arrowW,
 429                        XmNarrowSpacing, &arrowS,
 430                        XmNhighlightThickness, &highlight,
 431                        XmNmarginWidth, &xmargin,
 432                        XmNmarginHeight, &ymargin,
 433                        XmNshadowThickness, &shadow,
 434                        NULL );
 435
 436         wxSize listSize = wxDoGetListBoxBestSize( GetXmList(this), this );
 437         wxSize textSize = wxDoGetSingleTextCtrlBestSize( GetXmText(this),
 438                                                          this );
 439
 440         // FIXME arbitrary constants
 441         return wxSize( listSize.x + arrowW + arrowS + 2 * highlight
 442                                   + 2 * shadow + 2 * xmargin ,
 443                        textSize.y + 2 * highlight + 2 * ymargin + 2 * shadow );
 444     }
 445     else
 446         return wxWindow::DoGetBestSize();
 447 }
 448
 449 #endif // XmVersion >= 2000
 450
 451 #endif // wxUSE_COMBOBOX