src/motif/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        combobox.cpp
   3 // Purpose:     wxComboBox class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "combobox.h"
  14 #endif
  15
  16 #include "wx/setup.h"
  17
  18 #if wxUSE_COMBOBOX
  19
  20 #include "wx/combobox.h"
  21
  22 #ifdef __VMS__
  23 #pragma message disable nosimpint
  24 #endif
  25 #include <Xm/Xm.h>
  26 #ifdef __VMS__
  27 #pragma message enable nosimpint
  28 #endif
  29
  30 // use the old, GPL'd combobox
  31 #if (XmVersion < 2000)
  32
  33 #include "xmcombo/xmcombo.h"
  34
  35 #include "wx/motif/private.h"
  36
  37 void  wxComboBoxCallback (Widget w, XtPointer clientData,
  38                           XmComboBoxSelectionCallbackStruct * cbs);
  39
  40 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  41
  42 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  43                         const wxString& value,
  44                         const wxPoint& pos,
  45                         const wxSize& size,
  46                         int n, const wxString choices[],
  47                         long style,
  48                         const wxValidator& validator,
  49                         const wxString& name)
  50 {
  51     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  52         return FALSE;
  53
  54     m_noStrings = n;
  55
  56     Widget parentWidget = (Widget) parent->GetClientWidget();
  57
  58     Widget buttonWidget = XtVaCreateManagedWidget(name.c_str(),
  59         xmComboBoxWidgetClass, parentWidget,
  60         XmNmarginHeight, 0,
  61         XmNmarginWidth, 0,
  62         XmNshowLabel, False,
  63         XmNeditable, ((style & wxCB_READONLY) != wxCB_READONLY),
  64         XmNsorted, ((style & wxCB_SORT) == wxCB_SORT),
  65         XmNstaticList, ((style & wxCB_SIMPLE) == wxCB_SIMPLE),
  66         NULL);
  67
  68     int i;
  69     for (i = 0; i < n; i++)
  70     {
  71         wxXmString str( choices[i] );
  72         XmComboBoxAddItem(buttonWidget, str(), 0);
  73         m_stringList.Add(choices[i]);
  74     }
  75
  76     m_mainWidget = (Widget) buttonWidget;
  77
  78     XtManageChild (buttonWidget);
  79
  80     SetValue(value);
  81
  82     ChangeFont(FALSE);
  83
  84     XtAddCallback (buttonWidget, XmNselectionCallback, (XtCallbackProc) wxComboBoxCallback,
  85         (XtPointer) this);
  86     XtAddCallback (buttonWidget, XmNvalueChangedCallback, (XtCallbackProc) wxComboBoxCallback,
  87         (XtPointer) this);
  88
  89     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
  90
  91     ChangeBackgroundColour();
  92
  93     return TRUE;
  94 }
  95
  96 wxComboBox::~wxComboBox()
  97 {
  98     DetachWidget((Widget) m_mainWidget); // Removes event handlers
  99     XtDestroyWidget((Widget) m_mainWidget);
 100     m_mainWidget = (WXWidget) 0;
 101     if ( HasClientObjectData() )
 102         m_clientDataDict.DestroyData();
 103 }
 104
 105 void wxComboBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 106 {
 107     // Necessary so it doesn't call wxChoice::SetSize
 108     wxWindow::DoSetSize(x, y, width, DoGetBestSize().y, sizeFlags);
 109 }
 110
 111 wxString wxComboBox::GetValue() const
 112 {
 113     char *s = XmComboBoxGetString ((Widget) m_mainWidget);
 114     if (s)
 115     {
 116         wxString str(s);
 117         XtFree (s);
 118         return str;
 119     }
 120     else
 121         return wxEmptyString;
 122 }
 123
 124 void wxComboBox::SetValue(const wxString& value)
 125 {
 126     m_inSetValue = TRUE;
 127     if( !value.empty() )
 128         XmComboBoxSetString( (Widget)m_mainWidget,
 129                              wxConstCast(value.c_str(), char) );
 130     m_inSetValue = FALSE;
 131 }
 132
 133 void wxComboBox::SetString(int n, const wxString& s)
 134 {
 135     wxFAIL_MSG( wxT("wxComboBox::SetString only implemented for Motif 2.0") );
 136 }
 137
 138 int wxComboBox::DoAppend(const wxString& item)
 139 {
 140     wxXmString str( item.c_str() );
 141     XmComboBoxAddItem((Widget) m_mainWidget, str(), 0);
 142     m_stringList.Add(item);
 143     m_noStrings ++;
 144
 145     return GetCount() - 1;
 146 }
 147
 148 int wxComboBox::DoInsert(const wxString& item, int pos)
 149 {
 150     wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
 151     wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
 152
 153     if (pos == GetCount())
 154         return DoAppend(item);
 155
 156     wxXmString str( item.c_str() );
 157     XmComboBoxAddItem((Widget) m_mainWidget, str(), pos+1);
 158     wxChar* copy = wxStrcpy(new wxChar[item.length() + 1], item.c_str());
 159     m_stringList.Insert(pos, copy);
 160     m_noStrings ++;
 161
 162     return pos;
 163 }
 164
 165 void wxComboBox::Delete(int n)
 166 {
 167     XmComboBoxDeletePos((Widget) m_mainWidget, n+1);
 168     wxStringList::Node *node = m_stringList.Item(n);
 169     if (node)
 170     {
 171         delete[] node->GetData();
 172         delete node;
 173     }
 174     m_clientDataDict.Delete(n, HasClientObjectData());
 175     m_noStrings--;
 176 }
 177
 178 void wxComboBox::Clear()
 179 {
 180     XmComboBoxDeleteAllItems((Widget) m_mainWidget);
 181     m_stringList.Clear();
 182
 183     if ( HasClientObjectData() )
 184         m_clientDataDict.DestroyData();
 185     m_noStrings = 0;
 186 }
 187
 188 void wxComboBox::SetSelection (int n)
 189 {
 190     XmComboBoxSelectPos((Widget) m_mainWidget, n+1, False);
 191 }
 192
 193 int wxComboBox::GetSelection (void) const
 194 {
 195     int sel = XmComboBoxGetSelectedPos((Widget) m_mainWidget);
 196     if (sel == 0)
 197         return -1;
 198     else
 199         return sel - 1;
 200 }
 201
 202 wxString wxComboBox::GetString(int n) const
 203 {
 204     wxStringList::Node *node = m_stringList.Item(n);
 205     if (node)
 206         return wxString(node->GetData ());
 207     else
 208         return wxEmptyString;
 209 }
 210
 211 int wxComboBox::FindString(const wxString& s) const
 212 {
 213     int *pos_list = NULL;
 214     int count = 0;
 215     wxXmString text( s );
 216     bool found = (XmComboBoxGetMatchPos((Widget) m_mainWidget,
 217         text(), &pos_list, &count) != 0);
 218
 219     if (found && count > 0)
 220     {
 221         int pos = pos_list[0] - 1;
 222         free(pos_list);
 223         return pos;
 224     }
 225
 226     return -1;
 227 }
 228
 229 // Clipboard operations
 230 void wxComboBox::Copy()
 231 {
 232     XmComboBoxCopy((Widget) m_mainWidget, CurrentTime);
 233 }
 234
 235 void wxComboBox::Cut()
 236 {
 237     XmComboBoxCut((Widget) m_mainWidget, CurrentTime);
 238 }
 239
 240 void wxComboBox::Paste()
 241 {
 242     XmComboBoxPaste((Widget) m_mainWidget);
 243 }
 244
 245 void wxComboBox::SetEditable(bool WXUNUSED(editable))
 246 {
 247     // TODO
 248 }
 249
 250 void wxComboBox::SetInsertionPoint(long pos)
 251 {
 252     XmComboBoxSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) pos);
 253 }
 254
 255 void wxComboBox::SetInsertionPointEnd()
 256 {
 257     XmTextPosition pos = XmComboBoxGetLastPosition ((Widget) m_mainWidget);
 258     XmComboBoxSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) (pos + 1));
 259 }
 260
 261 long wxComboBox::GetInsertionPoint() const
 262 {
 263     return (long) XmComboBoxGetInsertionPosition ((Widget) m_mainWidget);
 264 }
 265
 266 long wxComboBox::GetLastPosition() const
 267 {
 268     return (long) XmComboBoxGetLastPosition ((Widget) m_mainWidget);
 269 }
 270
 271 void wxComboBox::Replace(long from, long to, const wxString& value)
 272 {
 273     XmComboBoxReplace ((Widget) m_mainWidget, (XmTextPosition) from,
 274                        (XmTextPosition) to,
 275                        wxConstCast(value.c_str(), char));
 276 }
 277
 278 void wxComboBox::Remove(long from, long to)
 279 {
 280     XmComboBoxSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 281                       (Time) 0);
 282     XmComboBoxRemove ((Widget) m_mainWidget);
 283 }
 284
 285 void wxComboBox::SetSelection(long from, long to)
 286 {
 287     XmComboBoxSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 288                       (Time) 0);
 289 }
 290
 291 void  wxComboBoxCallback (Widget WXUNUSED(w), XtPointer clientData,
 292                           XmComboBoxSelectionCallbackStruct * cbs)
 293 {
 294     wxComboBox *item = (wxComboBox *) clientData;
 295
 296     switch (cbs->reason)
 297     {
 298     case XmCR_SINGLE_SELECT:
 299     case XmCR_BROWSE_SELECT:
 300         {
 301             wxCommandEvent event (wxEVT_COMMAND_COMBOBOX_SELECTED,
 302                                   item->GetId());
 303             event.m_commandInt = cbs->index - 1;
 304             event.m_commandString = item->GetString (event.m_commandInt);
 305             if ( item->HasClientObjectData() )
 306                 event.SetClientObject( item->GetClientObject(cbs->index - 1) );
 307             else if ( item->HasClientUntypedData() )
 308                 event.SetClientData( item->GetClientData(cbs->index - 1) );
 309             event.m_extraLong = TRUE;
 310             event.SetEventObject(item);
 311             item->ProcessCommand (event);
 312             break;
 313         }
 314     case XmCR_VALUE_CHANGED:
 315         {
 316             wxCommandEvent event (wxEVT_COMMAND_TEXT_UPDATED, item->GetId());
 317             event.m_commandInt = -1;
 318             event.m_commandString = item->GetValue();
 319             event.m_extraLong = TRUE;
 320             event.SetEventObject(item);
 321             item->ProcessCommand (event);
 322             break;
 323         }
 324     default:
 325         break;
 326     }
 327 }
 328
 329 void wxComboBox::ChangeFont(bool keepOriginalSize)
 330 {
 331     // Don't use the base class wxChoice's ChangeFont
 332     wxWindow::ChangeFont(keepOriginalSize);
 333 }
 334
 335 void wxComboBox::ChangeBackgroundColour()
 336 {
 337     wxWindow::ChangeBackgroundColour();
 338 }
 339
 340 void wxComboBox::ChangeForegroundColour()
 341 {
 342     wxWindow::ChangeForegroundColour();
 343 }
 344
 345 wxSize wxComboBox::DoGetBestSize() const
 346 {
 347     if( (GetWindowStyle() & wxCB_DROPDOWN) == wxCB_DROPDOWN ||
 348         (GetWindowStyle() & wxCB_READONLY) == wxCB_READONLY )
 349     {
 350         wxSize items = GetItemsSize();
 351         // FIXME arbitrary constants
 352         return wxSize( ( items.x ? items.x + 50 : 120 ),
 353                          items.y + 10 );
 354     }
 355     else
 356         return wxWindow::DoGetBestSize();
 357 }
 358
 359 #endif // XmVersion < 2000
 360
 361 #endif // wxUSE_COMBOBOX