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     XtVaSetValues( GetXmText(this),
 183                    XmNvalue, wxConstCast(value.c_str(), char),
 184                    NULL);
 185
 186     m_inSetValue = false;
 187 }
 188
 189 int wxComboBox::DoAppend(const wxString& item)
 190 {
 191     wxXmString str( item.c_str() );
 192     XmComboBoxAddItem((Widget) m_mainWidget, str(), 0, False);
 193     m_noStrings ++;
 194     AdjustDropDownListSize();
 195
 196     return GetCount() - 1;
 197 }
 198
 199 void wxComboBox::Delete(int n)
 200 {
 201 #ifdef LESSTIF_VERSION
 202     XmListDeletePos (GetXmList(this), n + 1);
 203 #else
 204     XmComboBoxDeletePos((Widget) m_mainWidget, n+1);
 205 #endif
 206
 207     m_clientDataDict.Delete(n, HasClientObjectData());
 208     m_noStrings--;
 209
 210     AdjustDropDownListSize();
 211 }
 212
 213 void wxComboBox::Clear()
 214 {
 215 #ifdef LESSTIF_VERSION
 216     XmListDeleteAllItems (GetXmList(this));
 217 #else
 218     while(m_noStrings > 0)
 219     {
 220         XmComboBoxDeletePos((Widget) m_mainWidget, m_noStrings--);
 221     }
 222 #endif
 223
 224     if ( HasClientObjectData() )
 225         m_clientDataDict.DestroyData();
 226     m_noStrings = 0;
 227     AdjustDropDownListSize();
 228 }
 229
 230 void wxComboBox::SetSelection (int n)
 231 {
 232 #if wxCHECK_LESSTIF()
 233     XmListSelectPos (GetXmList(this), n + 1, false);
 234     SetValue(GetString(n));
 235 #else
 236 #if 0
 237     wxXmString str( GetString(n).c_str() );
 238     XmComboBoxSelectItem((Widget) m_mainWidget, str());
 239 #endif
 240     XtVaSetValues( (Widget)m_mainWidget,
 241                    XmNselectedPosition, n,
 242                    NULL );
 243 #endif
 244 }
 245
 246 int wxComboBox::GetSelection (void) const
 247 {
 248     return wxDoGetSelectionInList( GetXmList( this ) );
 249 }
 250
 251 wxString wxComboBox::GetString(int n) const
 252 {
 253     return wxDoGetStringInList( GetXmList(this), n );
 254 }
 255
 256 int wxComboBox::FindString(const wxString& s) const
 257 {
 258     return wxDoFindStringInList( GetXmList( this ), s );
 259 }
 260
 261 // Clipboard operations
 262 void wxComboBox::Copy()
 263 {
 264     XmTextCopy( GetXmText(this), CurrentTime );
 265 }
 266
 267 void wxComboBox::Cut()
 268 {
 269     XmTextCut( GetXmText(this), CurrentTime );
 270 }
 271
 272 void wxComboBox::Paste()
 273 {
 274     XmTextPaste( GetXmText(this) );
 275 }
 276
 277 void wxComboBox::SetEditable(bool WXUNUSED(editable))
 278 {
 279     // TODO
 280 }
 281
 282 void wxComboBox::SetInsertionPoint(long pos)
 283 {
 284     XmTextSetInsertionPosition( GetXmText(this), (XmTextPosition)pos );
 285 }
 286
 287 void wxComboBox::SetInsertionPointEnd()
 288 {
 289     SetInsertionPoint( GetLastPosition() );
 290 }
 291
 292 long wxComboBox::GetInsertionPoint() const
 293 {
 294     return (long)XmTextGetInsertionPosition( GetXmText(this) );
 295 }
 296
 297 long wxComboBox::GetLastPosition() const
 298 {
 299     XmTextPosition pos = XmTextGetLastPosition( GetXmText(this) );
 300     return (long)pos;
 301 }
 302
 303 void wxComboBox::Replace(long from, long to, const wxString& value)
 304 {
 305     XmTextReplace( GetXmText(this), (XmTextPosition)from, (XmTextPosition)to,
 306                    wxConstCast(value.c_str(), char) );
 307 }
 308
 309 void wxComboBox::Remove(long from, long to)
 310 {
 311     SetSelection( from, to );
 312     XmTextRemove( GetXmText(this) );
 313 }
 314
 315 void wxComboBox::SetSelection(long from, long to)
 316 {
 317     if( to == -1 )
 318         to = GetLastPosition();
 319
 320     XmTextSetSelection( GetXmText(this), (XmTextPosition)from,
 321                         (XmTextPosition)to, (Time)0 );
 322 }
 323
 324 void  wxComboBoxCallback (Widget WXUNUSED(w), XtPointer clientData,
 325                           XmComboBoxCallbackStruct * cbs)
 326 {
 327     wxComboBox *item = (wxComboBox *) clientData;
 328
 329     switch (cbs->reason)
 330     {
 331     case XmCR_SELECT:
 332 #if 0
 333     case XmCR_SINGLE_SELECT:
 334     case XmCR_BROWSE_SELECT:
 335 #endif
 336         {
 337             wxCommandEvent event (wxEVT_COMMAND_COMBOBOX_SELECTED,
 338                                   item->GetId());
 339             int idx = cbs->item_position - 1;
 340             event.m_commandInt = idx;
 341             event.m_commandString = item->GetString (idx);
 342             if ( item->HasClientObjectData() )
 343                 event.SetClientObject( item->GetClientObject(idx) );
 344             else if ( item->HasClientUntypedData() )
 345                 event.SetClientData( item->GetClientData(idx) );
 346             event.m_extraLong = true;
 347             event.SetEventObject(item);
 348             item->ProcessCommand (event);
 349             break;
 350         }
 351     case XmCR_VALUE_CHANGED:
 352         {
 353             wxCommandEvent event (wxEVT_COMMAND_TEXT_UPDATED, item->GetId());
 354             event.m_commandInt = -1;
 355             event.m_commandString = item->GetValue();
 356             event.m_extraLong = true;
 357             event.SetEventObject(item);
 358             item->ProcessCommand (event);
 359             break;
 360         }
 361     default:
 362         break;
 363     }
 364 }
 365
 366 void wxComboBox::ChangeFont(bool keepOriginalSize)
 367 {
 368     if( m_font.Ok() )
 369     {
 370         wxDoChangeFont( GetXmText(this), m_font );
 371         wxDoChangeFont( GetXmList(this), m_font );
 372     }
 373
 374     // Don't use the base class wxChoice's ChangeFont
 375     wxWindow::ChangeFont(keepOriginalSize);
 376 }
 377
 378 void wxComboBox::ChangeBackgroundColour()
 379 {
 380     wxWindow::ChangeBackgroundColour();
 381 }
 382
 383 void wxComboBox::ChangeForegroundColour()
 384 {
 385     wxWindow::ChangeForegroundColour();
 386 }
 387
 388 wxSize wxComboBox::DoGetBestSize() const
 389 {
 390     if( (GetWindowStyle() & wxCB_DROPDOWN) == wxCB_DROPDOWN ||
 391         (GetWindowStyle() & wxCB_READONLY) == wxCB_READONLY )
 392     {
 393         Dimension arrowW, arrowS, highlight, xmargin, ymargin, shadow;
 394
 395         XtVaGetValues( (Widget)m_mainWidget,
 396                        XmNarrowSize, &arrowW,
 397                        XmNarrowSpacing, &arrowS,
 398                        XmNhighlightThickness, &highlight,
 399                        XmNmarginWidth, &xmargin,
 400                        XmNmarginHeight, &ymargin,
 401                        XmNshadowThickness, &shadow,
 402                        NULL );
 403
 404         wxSize listSize = wxDoGetListBoxBestSize( GetXmList(this), this );
 405         wxSize textSize = wxDoGetSingleTextCtrlBestSize( GetXmText(this),
 406                                                          this );
 407
 408         // FIXME arbitrary constants
 409         return wxSize( listSize.x + arrowW + arrowS + 2 * highlight
 410                                   + 2 * shadow + 2 * xmargin ,
 411                        textSize.y + 2 * highlight + 2 * ymargin + 2 * shadow );
 412     }
 413     else
 414         return wxWindow::DoGetBestSize();
 415 }
 416
 417 #endif // XmVersion >= 2000
 418
 419 #endif // wxUSE_COMBOBOX