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