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 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #include "wx/setup.h"
  20
  21 #if wxUSE_COMBOBOX
  22
  23 #include "wx/combobox.h"
  24 #include "wx/arrstr.h"
  25
  26 #ifdef __VMS__
  27 #pragma message disable nosimpint
  28 #endif
  29 #include <Xm/Xm.h>
  30 #ifdef __VMS__
  31 #pragma message enable nosimpint
  32 #endif
  33
  34 // use the old, GPL'd combobox
  35 #if (XmVersion < 2000)
  36
  37 #include "xmcombo/xmcombo.h"
  38
  39 #include "wx/motif/private.h"
  40
  41 void  wxComboBoxCallback (Widget w, XtPointer clientData,
  42                           XmComboBoxSelectionCallbackStruct * cbs);
  43
  44 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  45
  46 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  47                         const wxString& value,
  48                         const wxPoint& pos,
  49                         const wxSize& size,
  50                         int n, const wxString choices[],
  51                         long style,
  52                         const wxValidator& validator,
  53                         const wxString& name)
  54 {
  55     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  56         return FALSE;
  57
  58     m_noStrings = n;
  59
  60     Widget parentWidget = (Widget) parent->GetClientWidget();
  61
  62     Widget buttonWidget = XtVaCreateManagedWidget(name.c_str(),
  63         xmComboBoxWidgetClass, parentWidget,
  64         XmNmarginHeight, 0,
  65         XmNmarginWidth, 0,
  66         XmNshowLabel, False,
  67         XmNeditable, ((style & wxCB_READONLY) != wxCB_READONLY),
  68         XmNsorted, ((style & wxCB_SORT) == wxCB_SORT),
  69         XmNstaticList, ((style & wxCB_SIMPLE) == wxCB_SIMPLE),
  70         NULL);
  71
  72     int i;
  73     for (i = 0; i < n; i++)
  74     {
  75         wxXmString str( choices[i] );
  76         XmComboBoxAddItem(buttonWidget, str(), 0);
  77         m_stringList.Add(choices[i]);
  78     }
  79
  80     m_mainWidget = (Widget) buttonWidget;
  81
  82     XtManageChild (buttonWidget);
  83
  84     SetValue(value);
  85
  86     ChangeFont(FALSE);
  87
  88     XtAddCallback (buttonWidget, XmNselectionCallback, (XtCallbackProc) wxComboBoxCallback,
  89         (XtPointer) this);
  90     XtAddCallback (buttonWidget, XmNvalueChangedCallback, (XtCallbackProc) wxComboBoxCallback,
  91         (XtPointer) this);
  92
  93     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
  94
  95     ChangeBackgroundColour();
  96
  97     return TRUE;
  98 }
  99
 100 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 101                         const wxString& value,
 102                         const wxPoint& pos,
 103                         const wxSize& size,
 104                         const wxArrayString& choices,
 105                         long style,
 106                         const wxValidator& validator,
 107                         const wxString& name)
 108 {
 109     wxCArrayString chs(choices);
 110     return Create(parent, id, value, pos, size, chs.GetCount(),
 111                   chs.GetStrings(), style, validator, name);
 112 }
 113
 114 wxComboBox::~wxComboBox()
 115 {
 116     DetachWidget((Widget) m_mainWidget); // Removes event handlers
 117     XtDestroyWidget((Widget) m_mainWidget);
 118     m_mainWidget = (WXWidget) 0;
 119     if ( HasClientObjectData() )
 120         m_clientDataDict.DestroyData();
 121 }
 122
 123 void wxComboBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 124 {
 125     // Necessary so it doesn't call wxChoice::SetSize
 126     wxWindow::DoSetSize(x, y, width, DoGetBestSize().y, sizeFlags);
 127 }
 128
 129 wxString wxComboBox::GetValue() const
 130 {
 131     char *s = XmComboBoxGetString ((Widget) m_mainWidget);
 132     if (s)
 133     {
 134         wxString str(s);
 135         XtFree (s);
 136         return str;
 137     }
 138     else
 139         return wxEmptyString;
 140 }
 141
 142 void wxComboBox::SetValue(const wxString& value)
 143 {
 144     m_inSetValue = TRUE;
 145     if( !value.empty() )
 146         XmComboBoxSetString( (Widget)m_mainWidget,
 147                              wxConstCast(value.c_str(), char) );
 148     m_inSetValue = FALSE;
 149 }
 150
 151 void wxComboBox::SetString(int n, const wxString& s)
 152 {
 153     wxFAIL_MSG( wxT("wxComboBox::SetString only implemented for Motif 2.0") );
 154 }
 155
 156 int wxComboBox::DoAppend(const wxString& item)
 157 {
 158     wxXmString str( item.c_str() );
 159     XmComboBoxAddItem((Widget) m_mainWidget, str(), 0);
 160     m_stringList.Add(item);
 161     m_noStrings ++;
 162
 163     return GetCount() - 1;
 164 }
 165
 166 int wxComboBox::DoInsert(const wxString& item, int pos)
 167 {
 168     wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
 169     wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
 170
 171     if (pos == GetCount())
 172         return DoAppend(item);
 173
 174     wxXmString str( item.c_str() );
 175     XmComboBoxAddItem((Widget) m_mainWidget, str(), pos+1);
 176     wxChar* copy = wxStrcpy(new wxChar[item.length() + 1], item.c_str());
 177     m_stringList.Insert(pos, copy);
 178     m_noStrings ++;
 179
 180     return pos;
 181 }
 182
 183 void wxComboBox::Delete(int n)
 184 {
 185     XmComboBoxDeletePos((Widget) m_mainWidget, n+1);
 186     wxStringList::Node *node = m_stringList.Item(n);
 187     if (node)
 188     {
 189         delete[] node->GetData();
 190         delete node;
 191     }
 192     m_clientDataDict.Delete(n, HasClientObjectData());
 193     m_noStrings--;
 194 }
 195
 196 void wxComboBox::Clear()
 197 {
 198     XmComboBoxDeleteAllItems((Widget) m_mainWidget);
 199     m_stringList.Clear();
 200
 201     if ( HasClientObjectData() )
 202         m_clientDataDict.DestroyData();
 203     m_noStrings = 0;
 204 }
 205
 206 void wxComboBox::SetSelection (int n)
 207 {
 208     XmComboBoxSelectPos((Widget) m_mainWidget, n+1, False);
 209 }
 210
 211 int wxComboBox::GetSelection (void) const
 212 {
 213     int sel = XmComboBoxGetSelectedPos((Widget) m_mainWidget);
 214     if (sel == 0)
 215         return -1;
 216     else
 217         return sel - 1;
 218 }
 219
 220 wxString wxComboBox::GetString(int n) const
 221 {
 222     wxStringList::Node *node = m_stringList.Item(n);
 223     if (node)
 224         return wxString(node->GetData ());
 225     else
 226         return wxEmptyString;
 227 }
 228
 229 int wxComboBox::FindString(const wxString& s) const
 230 {
 231     int *pos_list = NULL;
 232     int count = 0;
 233     wxXmString text( s );
 234     bool found = (XmComboBoxGetMatchPos((Widget) m_mainWidget,
 235         text(), &pos_list, &count) != 0);
 236
 237     if (found && count > 0)
 238     {
 239         int pos = pos_list[0] - 1;
 240         free(pos_list);
 241         return pos;
 242     }
 243
 244     return -1;
 245 }
 246
 247 // Clipboard operations
 248 void wxComboBox::Copy()
 249 {
 250     XmComboBoxCopy((Widget) m_mainWidget, CurrentTime);
 251 }
 252
 253 void wxComboBox::Cut()
 254 {
 255     XmComboBoxCut((Widget) m_mainWidget, CurrentTime);
 256 }
 257
 258 void wxComboBox::Paste()
 259 {
 260     XmComboBoxPaste((Widget) m_mainWidget);
 261 }
 262
 263 void wxComboBox::SetEditable(bool WXUNUSED(editable))
 264 {
 265     // TODO
 266 }
 267
 268 void wxComboBox::SetInsertionPoint(long pos)
 269 {
 270     XmComboBoxSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) pos);
 271 }
 272
 273 void wxComboBox::SetInsertionPointEnd()
 274 {
 275     XmTextPosition pos = XmComboBoxGetLastPosition ((Widget) m_mainWidget);
 276     XmComboBoxSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) (pos + 1));
 277 }
 278
 279 long wxComboBox::GetInsertionPoint() const
 280 {
 281     return (long) XmComboBoxGetInsertionPosition ((Widget) m_mainWidget);
 282 }
 283
 284 long wxComboBox::GetLastPosition() const
 285 {
 286     return (long) XmComboBoxGetLastPosition ((Widget) m_mainWidget);
 287 }
 288
 289 void wxComboBox::Replace(long from, long to, const wxString& value)
 290 {
 291     XmComboBoxReplace ((Widget) m_mainWidget, (XmTextPosition) from,
 292                        (XmTextPosition) to,
 293                        wxConstCast(value.c_str(), char));
 294 }
 295
 296 void wxComboBox::Remove(long from, long to)
 297 {
 298     XmComboBoxSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 299                       (Time) 0);
 300     XmComboBoxRemove ((Widget) m_mainWidget);
 301 }
 302
 303 void wxComboBox::SetSelection(long from, long to)
 304 {
 305     XmComboBoxSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 306                       (Time) 0);
 307 }
 308
 309 void  wxComboBoxCallback (Widget WXUNUSED(w), XtPointer clientData,
 310                           XmComboBoxSelectionCallbackStruct * cbs)
 311 {
 312     wxComboBox *item = (wxComboBox *) clientData;
 313
 314     switch (cbs->reason)
 315     {
 316     case XmCR_SINGLE_SELECT:
 317     case XmCR_BROWSE_SELECT:
 318         {
 319             wxCommandEvent event (wxEVT_COMMAND_COMBOBOX_SELECTED,
 320                                   item->GetId());
 321             event.m_commandInt = cbs->index - 1;
 322             event.m_commandString = item->GetString (event.m_commandInt);
 323             if ( item->HasClientObjectData() )
 324                 event.SetClientObject( item->GetClientObject(cbs->index - 1) );
 325             else if ( item->HasClientUntypedData() )
 326                 event.SetClientData( item->GetClientData(cbs->index - 1) );
 327             event.m_extraLong = TRUE;
 328             event.SetEventObject(item);
 329             item->ProcessCommand (event);
 330             break;
 331         }
 332     case XmCR_VALUE_CHANGED:
 333         {
 334             wxCommandEvent event (wxEVT_COMMAND_TEXT_UPDATED, item->GetId());
 335             event.m_commandInt = -1;
 336             event.m_commandString = item->GetValue();
 337             event.m_extraLong = TRUE;
 338             event.SetEventObject(item);
 339             item->ProcessCommand (event);
 340             break;
 341         }
 342     default:
 343         break;
 344     }
 345 }
 346
 347 void wxComboBox::ChangeFont(bool keepOriginalSize)
 348 {
 349     // Don't use the base class wxChoice's ChangeFont
 350     wxWindow::ChangeFont(keepOriginalSize);
 351 }
 352
 353 void wxComboBox::ChangeBackgroundColour()
 354 {
 355     wxWindow::ChangeBackgroundColour();
 356 }
 357
 358 void wxComboBox::ChangeForegroundColour()
 359 {
 360     wxWindow::ChangeForegroundColour();
 361 }
 362
 363 wxSize wxComboBox::DoGetBestSize() const
 364 {
 365     if( (GetWindowStyle() & wxCB_DROPDOWN) == wxCB_DROPDOWN ||
 366         (GetWindowStyle() & wxCB_READONLY) == wxCB_READONLY )
 367     {
 368         wxSize items = GetItemsSize();
 369         // FIXME arbitrary constants
 370         return wxSize( ( items.x ? items.x + 50 : 120 ),
 371                          items.y + 10 );
 372     }
 373     else
 374         return wxWindow::DoGetBestSize();
 375 }
 376
 377 #endif // XmVersion < 2000
 378
 379 #endif // wxUSE_COMBOBOX