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 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #include "wx/setup.h"
  16
  17 #if wxUSE_COMBOBOX
  18
  19 #include "wx/combobox.h"
  20 #include "wx/arrstr.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 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  97                         const wxString& value,
  98                         const wxPoint& pos,
  99                         const wxSize& size,
 100                         const wxArrayString& choices,
 101                         long style,
 102                         const wxValidator& validator,
 103                         const wxString& name)
 104 {
 105     wxCArrayString chs(choices);
 106     return Create(parent, id, value, pos, size, chs.GetCount(),
 107                   chs.GetStrings(), style, validator, name);
 108 }
 109
 110 wxComboBox::~wxComboBox()
 111 {
 112     DetachWidget((Widget) m_mainWidget); // Removes event handlers
 113     XtDestroyWidget((Widget) m_mainWidget);
 114     m_mainWidget = (WXWidget) 0;
 115     if ( HasClientObjectData() )
 116         m_clientDataDict.DestroyData();
 117 }
 118
 119 void wxComboBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 120 {
 121     // Necessary so it doesn't call wxChoice::SetSize
 122     wxWindow::DoSetSize(x, y, width, DoGetBestSize().y, sizeFlags);
 123 }
 124
 125 wxString wxComboBox::GetValue() const
 126 {
 127     char *s = XmComboBoxGetString ((Widget) m_mainWidget);
 128     if (s)
 129     {
 130         wxString str(s);
 131         XtFree (s);
 132         return str;
 133     }
 134     else
 135         return wxEmptyString;
 136 }
 137
 138 void wxComboBox::SetValue(const wxString& value)
 139 {
 140     m_inSetValue = true;
 141     if( !value.empty() )
 142         XmComboBoxSetString( (Widget)m_mainWidget,
 143                              wxConstCast(value.c_str(), char) );
 144     m_inSetValue = false;
 145 }
 146
 147 void wxComboBox::SetString(int n, const wxString& s)
 148 {
 149     wxFAIL_MSG( wxT("wxComboBox::SetString only implemented for Motif 2.0") );
 150 }
 151
 152 int wxComboBox::DoAppend(const wxString& item)
 153 {
 154     wxXmString str( item.c_str() );
 155     XmComboBoxAddItem((Widget) m_mainWidget, str(), 0);
 156     m_stringList.Add(item);
 157     m_noStrings ++;
 158
 159     return GetCount() - 1;
 160 }
 161
 162 int wxComboBox::DoInsert(const wxString& item, int pos)
 163 {
 164     wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
 165     wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
 166
 167     if (pos == GetCount())
 168         return DoAppend(item);
 169
 170     wxXmString str( item.c_str() );
 171     XmComboBoxAddItem((Widget) m_mainWidget, str(), pos+1);
 172     wxChar* copy = wxStrcpy(new wxChar[item.length() + 1], item.c_str());
 173     m_stringList.Insert(pos, copy);
 174     m_noStrings ++;
 175
 176     return pos;
 177 }
 178
 179 void wxComboBox::Delete(int n)
 180 {
 181     XmComboBoxDeletePos((Widget) m_mainWidget, n+1);
 182     wxStringList::Node *node = m_stringList.Item(n);
 183     if (node)
 184     {
 185         delete[] node->GetData();
 186         delete node;
 187     }
 188     m_clientDataDict.Delete(n, HasClientObjectData());
 189     m_noStrings--;
 190 }
 191
 192 void wxComboBox::Clear()
 193 {
 194     XmComboBoxDeleteAllItems((Widget) m_mainWidget);
 195     m_stringList.Clear();
 196
 197     if ( HasClientObjectData() )
 198         m_clientDataDict.DestroyData();
 199     m_noStrings = 0;
 200 }
 201
 202 void wxComboBox::SetSelection (int n)
 203 {
 204     XmComboBoxSelectPos((Widget) m_mainWidget, n+1, False);
 205 }
 206
 207 int wxComboBox::GetSelection (void) const
 208 {
 209     int sel = XmComboBoxGetSelectedPos((Widget) m_mainWidget);
 210     if (sel == 0)
 211         return -1;
 212     else
 213         return sel - 1;
 214 }
 215
 216 wxString wxComboBox::GetString(int n) const
 217 {
 218     wxStringList::Node *node = m_stringList.Item(n);
 219     if (node)
 220         return wxString(node->GetData ());
 221     else
 222         return wxEmptyString;
 223 }
 224
 225 int wxComboBox::FindString(const wxString& s) const
 226 {
 227     int *pos_list = NULL;
 228     int count = 0;
 229     wxXmString text( s );
 230     bool found = (XmComboBoxGetMatchPos((Widget) m_mainWidget,
 231         text(), &pos_list, &count) != 0);
 232
 233     if (found && count > 0)
 234     {
 235         int pos = pos_list[0] - 1;
 236         free(pos_list);
 237         return pos;
 238     }
 239
 240     return -1;
 241 }
 242
 243 // Clipboard operations
 244 void wxComboBox::Copy()
 245 {
 246     XmComboBoxCopy((Widget) m_mainWidget, CurrentTime);
 247 }
 248
 249 void wxComboBox::Cut()
 250 {
 251     XmComboBoxCut((Widget) m_mainWidget, CurrentTime);
 252 }
 253
 254 void wxComboBox::Paste()
 255 {
 256     XmComboBoxPaste((Widget) m_mainWidget);
 257 }
 258
 259 void wxComboBox::SetEditable(bool WXUNUSED(editable))
 260 {
 261     // TODO
 262 }
 263
 264 void wxComboBox::SetInsertionPoint(long pos)
 265 {
 266     XmComboBoxSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) pos);
 267 }
 268
 269 void wxComboBox::SetInsertionPointEnd()
 270 {
 271     XmTextPosition pos = XmComboBoxGetLastPosition ((Widget) m_mainWidget);
 272     XmComboBoxSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) (pos + 1));
 273 }
 274
 275 long wxComboBox::GetInsertionPoint() const
 276 {
 277     return (long) XmComboBoxGetInsertionPosition ((Widget) m_mainWidget);
 278 }
 279
 280 wxTextPos wxComboBox::GetLastPosition() const
 281 {
 282     return (wxTextPos) XmComboBoxGetLastPosition ((Widget) m_mainWidget);
 283 }
 284
 285 void wxComboBox::Replace(long from, long to, const wxString& value)
 286 {
 287     XmComboBoxReplace ((Widget) m_mainWidget, (XmTextPosition) from,
 288                        (XmTextPosition) to,
 289                        wxConstCast(value.c_str(), char));
 290 }
 291
 292 void wxComboBox::Remove(long from, long to)
 293 {
 294     XmComboBoxSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 295                       (Time) 0);
 296     XmComboBoxRemove ((Widget) m_mainWidget);
 297 }
 298
 299 void wxComboBox::SetSelection(long from, long to)
 300 {
 301     XmComboBoxSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 302                       (Time) 0);
 303 }
 304
 305 void  wxComboBoxCallback (Widget WXUNUSED(w), XtPointer clientData,
 306                           XmComboBoxSelectionCallbackStruct * cbs)
 307 {
 308     wxComboBox *item = (wxComboBox *) clientData;
 309
 310     switch (cbs->reason)
 311     {
 312     case XmCR_SINGLE_SELECT:
 313     case XmCR_BROWSE_SELECT:
 314         {
 315             wxCommandEvent event (wxEVT_COMMAND_COMBOBOX_SELECTED,
 316                                   item->GetId());
 317             event.SetInt(cbs->index - 1);
 318             event.SetString( item->GetString ( event.GetInt() ) );
 319             if ( item->HasClientObjectData() )
 320                 event.SetClientObject( item->GetClientObject(cbs->index - 1) );
 321             else if ( item->HasClientUntypedData() )
 322                 event.SetClientData( item->GetClientData(cbs->index - 1) );
 323             event.SetExtraLong(true);
 324             event.SetEventObject(item);
 325             item->ProcessCommand (event);
 326             break;
 327         }
 328     case XmCR_VALUE_CHANGED:
 329         {
 330             wxCommandEvent event (wxEVT_COMMAND_TEXT_UPDATED, item->GetId());
 331             event.SetInt(-1);
 332             event.SetString( item->GetValue() );
 333             event.SetExtraLong(true);
 334             event.SetEventObject(item);
 335             item->ProcessCommand (event);
 336             break;
 337         }
 338     default:
 339         break;
 340     }
 341 }
 342
 343 void wxComboBox::ChangeFont(bool keepOriginalSize)
 344 {
 345     // Don't use the base class wxChoice's ChangeFont
 346     wxWindow::ChangeFont(keepOriginalSize);
 347 }
 348
 349 void wxComboBox::ChangeBackgroundColour()
 350 {
 351     wxWindow::ChangeBackgroundColour();
 352 }
 353
 354 void wxComboBox::ChangeForegroundColour()
 355 {
 356     wxWindow::ChangeForegroundColour();
 357 }
 358
 359 wxSize wxComboBox::DoGetBestSize() const
 360 {
 361     if( (GetWindowStyle() & wxCB_DROPDOWN) == wxCB_DROPDOWN ||
 362         (GetWindowStyle() & wxCB_READONLY) == wxCB_READONLY )
 363     {
 364         wxSize items = GetItemsSize();
 365         // FIXME arbitrary constants
 366         return wxSize( ( items.x ? items.x + 50 : 120 ),
 367                          items.y + 10 );
 368     }
 369     else
 370         return wxWindow::DoGetBestSize();
 371 }
 372
 373 #endif // XmVersion < 2000
 374
 375 #endif // wxUSE_COMBOBOX