src/motif/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/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 #if wxUSE_COMBOBOX
  16
  17 #include "wx/combobox.h"
  18 #include "wx/arrstr.h"
  19
  20 #ifdef __VMS__
  21 #pragma message disable nosimpint
  22 #endif
  23 #include <Xm/Xm.h>
  24 #ifdef __VMS__
  25 #pragma message enable nosimpint
  26 #endif
  27
  28 // use the old, GPL'd combobox
  29 #if (XmVersion < 2000)
  30
  31 #include "xmcombo/xmcombo.h"
  32
  33 #include "wx/motif/private.h"
  34
  35 void  wxComboBoxCallback (Widget w, XtPointer clientData,
  36                           XmComboBoxSelectionCallbackStruct * cbs);
  37
  38 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  39
  40 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  41                         const wxString& value,
  42                         const wxPoint& pos,
  43                         const wxSize& size,
  44                         int n, const wxString choices[],
  45                         long style,
  46                         const wxValidator& validator,
  47                         const wxString& name)
  48 {
  49     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  50         return false;
  51
  52     m_noStrings = n;
  53
  54     Widget parentWidget = (Widget) parent->GetClientWidget();
  55
  56     Widget buttonWidget = XtVaCreateManagedWidget(name.c_str(),
  57         xmComboBoxWidgetClass, parentWidget,
  58         XmNmarginHeight, 0,
  59         XmNmarginWidth, 0,
  60         XmNshowLabel, False,
  61         XmNeditable, ((style & wxCB_READONLY) != wxCB_READONLY),
  62         XmNsorted, ((style & wxCB_SORT) == wxCB_SORT),
  63         XmNstaticList, ((style & wxCB_SIMPLE) == wxCB_SIMPLE),
  64         NULL);
  65
  66     int i;
  67     for (i = 0; i < n; i++)
  68     {
  69         wxXmString str( choices[i] );
  70         XmComboBoxAddItem(buttonWidget, str(), 0);
  71         m_stringList.Add(choices[i]);
  72     }
  73
  74     m_mainWidget = (Widget) buttonWidget;
  75
  76     XtManageChild (buttonWidget);
  77
  78     SetValue(value);
  79
  80     ChangeFont(false);
  81
  82     XtAddCallback (buttonWidget, XmNselectionCallback, (XtCallbackProc) wxComboBoxCallback,
  83         (XtPointer) this);
  84     XtAddCallback (buttonWidget, XmNvalueChangedCallback, (XtCallbackProc) wxComboBoxCallback,
  85         (XtPointer) this);
  86
  87     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
  88
  89     ChangeBackgroundColour();
  90
  91     return true;
  92 }
  93
  94 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  95                         const wxString& value,
  96                         const wxPoint& pos,
  97                         const wxSize& size,
  98                         const wxArrayString& choices,
  99                         long style,
 100                         const wxValidator& validator,
 101                         const wxString& name)
 102 {
 103     wxCArrayString chs(choices);
 104     return Create(parent, id, value, pos, size, chs.GetCount(),
 105                   chs.GetStrings(), style, validator, name);
 106 }
 107
 108 wxComboBox::~wxComboBox()
 109 {
 110     DetachWidget((Widget) m_mainWidget); // Removes event handlers
 111     XtDestroyWidget((Widget) m_mainWidget);
 112     m_mainWidget = (WXWidget) 0;
 113     if ( HasClientObjectData() )
 114         m_clientDataDict.DestroyData();
 115 }
 116
 117 void wxComboBox::DoSetSize(int x, int y,
 118                            int width, int WXUNUSED(height),
 119                            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 WXUNUSED(n), const wxString& WXUNUSED(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, bool WXUNUSED(bCase)) const
 226 {
 227     // FIXME: back to base class for not supported value of bCase
 228
 229     int *pos_list = NULL;
 230     int count = 0;
 231     wxXmString text( s );
 232     bool found = (XmComboBoxGetMatchPos((Widget) m_mainWidget,
 233         text(), &pos_list, &count) != 0);
 234
 235     if (found && count > 0)
 236     {
 237         int pos = pos_list[0] - 1;
 238         free(pos_list);
 239         return pos;
 240     }
 241
 242     return wxNOT_FOUND;
 243 }
 244
 245 // Clipboard operations
 246 void wxComboBox::Copy()
 247 {
 248     XmComboBoxCopy((Widget) m_mainWidget, CurrentTime);
 249 }
 250
 251 void wxComboBox::Cut()
 252 {
 253     XmComboBoxCut((Widget) m_mainWidget, CurrentTime);
 254 }
 255
 256 void wxComboBox::Paste()
 257 {
 258     XmComboBoxPaste((Widget) m_mainWidget);
 259 }
 260
 261 void wxComboBox::SetEditable(bool WXUNUSED(editable))
 262 {
 263     // TODO
 264 }
 265
 266 void wxComboBox::SetInsertionPoint(long pos)
 267 {
 268     XmComboBoxSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) pos);
 269 }
 270
 271 void wxComboBox::SetInsertionPointEnd()
 272 {
 273     XmTextPosition pos = XmComboBoxGetLastPosition ((Widget) m_mainWidget);
 274     XmComboBoxSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) (pos + 1));
 275 }
 276
 277 long wxComboBox::GetInsertionPoint() const
 278 {
 279     return (long) XmComboBoxGetInsertionPosition ((Widget) m_mainWidget);
 280 }
 281
 282 wxTextPos wxComboBox::GetLastPosition() const
 283 {
 284     return (wxTextPos) XmComboBoxGetLastPosition ((Widget) m_mainWidget);
 285 }
 286
 287 void wxComboBox::Replace(long from, long to, const wxString& value)
 288 {
 289     XmComboBoxReplace ((Widget) m_mainWidget, (XmTextPosition) from,
 290                        (XmTextPosition) to,
 291                        wxConstCast(value.c_str(), char));
 292 }
 293
 294 void wxComboBox::Remove(long from, long to)
 295 {
 296     XmComboBoxSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 297                       (Time) 0);
 298     XmComboBoxRemove ((Widget) m_mainWidget);
 299 }
 300
 301 void wxComboBox::SetSelection(long from, long to)
 302 {
 303     XmComboBoxSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 304                       (Time) 0);
 305 }
 306
 307 void  wxComboBoxCallback (Widget WXUNUSED(w), XtPointer clientData,
 308                           XmComboBoxSelectionCallbackStruct * cbs)
 309 {
 310     wxComboBox *item = (wxComboBox *) clientData;
 311
 312     switch (cbs->reason)
 313     {
 314     case XmCR_SINGLE_SELECT:
 315     case XmCR_BROWSE_SELECT:
 316         {
 317             wxCommandEvent event (wxEVT_COMMAND_COMBOBOX_SELECTED,
 318                                   item->GetId());
 319             event.SetInt(cbs->index - 1);
 320             event.SetString( item->GetString ( event.GetInt() ) );
 321             if ( item->HasClientObjectData() )
 322                 event.SetClientObject( item->GetClientObject(cbs->index - 1) );
 323             else if ( item->HasClientUntypedData() )
 324                 event.SetClientData( item->GetClientData(cbs->index - 1) );
 325             event.SetExtraLong(true);
 326             event.SetEventObject(item);
 327             item->ProcessCommand (event);
 328             break;
 329         }
 330     case XmCR_VALUE_CHANGED:
 331         {
 332             wxCommandEvent event (wxEVT_COMMAND_TEXT_UPDATED, item->GetId());
 333             event.SetInt(-1);
 334             event.SetString( item->GetValue() );
 335             event.SetExtraLong(true);
 336             event.SetEventObject(item);
 337             item->ProcessCommand (event);
 338             break;
 339         }
 340     default:
 341         break;
 342     }
 343 }
 344
 345 void wxComboBox::ChangeFont(bool keepOriginalSize)
 346 {
 347     // Don't use the base class wxChoice's ChangeFont
 348     wxWindow::ChangeFont(keepOriginalSize);
 349 }
 350
 351 void wxComboBox::ChangeBackgroundColour()
 352 {
 353     wxWindow::ChangeBackgroundColour();
 354 }
 355
 356 void wxComboBox::ChangeForegroundColour()
 357 {
 358     wxWindow::ChangeForegroundColour();
 359 }
 360
 361 wxSize wxComboBox::DoGetBestSize() const
 362 {
 363     if( (GetWindowStyle() & wxCB_DROPDOWN) == wxCB_DROPDOWN ||
 364         (GetWindowStyle() & wxCB_READONLY) == wxCB_READONLY )
 365     {
 366         wxSize items = GetItemsSize();
 367         // FIXME arbitrary constants
 368         return wxSize( ( items.x ? items.x + 50 : 120 ),
 369                          items.y + 10 );
 370     }
 371     else
 372         return wxWindow::DoGetBestSize();
 373 }
 374
 375 #endif // XmVersion < 2000
 376
 377 #endif // wxUSE_COMBOBOX