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
  19 #ifndef WX_PRECOMP
  20     #include "wx/arrstr.h"
  21 #endif
  22
  23 #ifdef __VMS__
  24 #pragma message disable nosimpint
  25 #endif
  26 #include <Xm/Xm.h>
  27 #ifdef __VMS__
  28 #pragma message enable nosimpint
  29 #endif
  30
  31 // use the old, GPL'd combobox
  32 #if (XmVersion < 2000)
  33
  34 #include "xmcombo/xmcombo.h"
  35
  36 #include "wx/motif/private.h"
  37
  38 void  wxComboBoxCallback (Widget w, XtPointer clientData,
  39                           XmComboBoxSelectionCallbackStruct * cbs);
  40
  41 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  42
  43 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  44                         const wxString& value,
  45                         const wxPoint& pos,
  46                         const wxSize& size,
  47                         int n, const wxString choices[],
  48                         long style,
  49                         const wxValidator& validator,
  50                         const wxString& name)
  51 {
  52     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  53         return false;
  54     PreCreation();
  55
  56     m_noStrings = n;
  57
  58     Widget parentWidget = (Widget) parent->GetClientWidget();
  59
  60     Widget buttonWidget = XtVaCreateManagedWidget(name.c_str(),
  61         xmComboBoxWidgetClass, parentWidget,
  62         XmNmarginHeight, 0,
  63         XmNmarginWidth, 0,
  64         XmNshowLabel, False,
  65         XmNeditable, ((style & wxCB_READONLY) != wxCB_READONLY),
  66         XmNsorted, ((style & wxCB_SORT) == wxCB_SORT),
  67         XmNstaticList, ((style & wxCB_SIMPLE) == wxCB_SIMPLE),
  68         NULL);
  69
  70     int i;
  71     for (i = 0; i < n; i++)
  72     {
  73         wxXmString str( choices[i] );
  74         XmComboBoxAddItem(buttonWidget, str(), 0);
  75         m_stringList.Add(choices[i]);
  76     }
  77
  78     m_mainWidget = (Widget) buttonWidget;
  79
  80     XtManageChild (buttonWidget);
  81
  82     SetValue(value);
  83
  84     XtAddCallback (buttonWidget, XmNselectionCallback, (XtCallbackProc) wxComboBoxCallback,
  85         (XtPointer) this);
  86     XtAddCallback (buttonWidget, XmNvalueChangedCallback, (XtCallbackProc) wxComboBoxCallback,
  87         (XtPointer) this);
  88
  89     PostCreation();
  90     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
  91
  92     return true;
  93 }
  94
  95 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  96                         const wxString& value,
  97                         const wxPoint& pos,
  98                         const wxSize& size,
  99                         const wxArrayString& choices,
 100                         long style,
 101                         const wxValidator& validator,
 102                         const wxString& name)
 103 {
 104     wxCArrayString chs(choices);
 105     return Create(parent, id, value, pos, size, chs.GetCount(),
 106                   chs.GetStrings(), style, validator, name);
 107 }
 108
 109 wxComboBox::~wxComboBox()
 110 {
 111     DetachWidget((Widget) m_mainWidget); // Removes event handlers
 112     XtDestroyWidget((Widget) m_mainWidget);
 113     m_mainWidget = (WXWidget) 0;
 114 }
 115
 116 void wxComboBox::DoSetSize(int x, int y,
 117                            int width, int WXUNUSED(height),
 118                            int sizeFlags)
 119 {
 120     // Necessary so it doesn't call wxChoice::SetSize
 121     wxWindow::DoSetSize(x, y, width, DoGetBestSize().y, sizeFlags);
 122 }
 123
 124 #if 0
 125 // Already defined in include/motif/combobox.h
 126 wxString wxComboBox::GetValue() const
 127 {
 128     char *s = XmComboBoxGetString ((Widget) m_mainWidget);
 129     if (s)
 130     {
 131         wxString str(s);
 132         XtFree (s);
 133         return str;
 134     }
 135     else
 136         return wxEmptyString;
 137 }
 138 #endif
 139
 140 void wxComboBox::SetValue(const wxString& value)
 141 {
 142     if( !value.empty() )
 143     {
 144         m_inSetValue = true;
 145         XmComboBoxSetString((Widget)m_mainWidget, value.char_str());
 146         m_inSetValue = false;
 147     }
 148 }
 149
 150 void wxComboBox::SetString(unsigned int WXUNUSED(n), const wxString& WXUNUSED(s))
 151 {
 152     wxFAIL_MSG( wxT("wxComboBox::SetString only implemented for Motif 2.0") );
 153 }
 154
 155 // TODO auto-sorting is not supported by the code
 156 int wxComboBox::DoInsertItems(const wxArrayStringsAdapter& items,
 157                               unsigned int pos,
 158                               void **clientData,
 159                               wxClientDataType type)
 160 {
 161     const unsigned int numItems = items.GetCount();
 162
 163     AllocClientData(numItems);
 164     for( unsigned int i = 0; i < numItems; ++i, ++pos )
 165     {
 166         wxXmString str( items[i].c_str() );
 167         XmComboBoxAddItem((Widget) m_mainWidget, str(), GetMotifPosition(pos));
 168         wxChar* copy = wxStrcpy(new wxChar[items[i].length() + 1], items[i].c_str());
 169         m_stringList.Insert(pos, copy);
 170         m_noStrings ++;
 171         InsertNewItemClientData(pos, clientData, i, type);
 172     }
 173
 174     return pos - 1;
 175 }
 176
 177 void wxComboBox::DoDeleteOneItem(unsigned int n)
 178 {
 179     XmComboBoxDeletePos((Widget) m_mainWidget, n+1);
 180     wxStringList::Node *node = m_stringList.Item(n);
 181     if (node)
 182     {
 183         delete[] node->GetData();
 184         delete node;
 185     }
 186     wxControlWithItems::DoDeleteOneItem(n);
 187     m_noStrings--;
 188 }
 189
 190 void wxComboBox::Clear()
 191 {
 192     XmComboBoxDeleteAllItems((Widget) m_mainWidget);
 193     m_stringList.Clear();
 194
 195     wxControlWithItems::DoClear();
 196     m_noStrings = 0;
 197 }
 198
 199 void wxComboBox::SetSelection (int n)
 200 {
 201     XmComboBoxSelectPos((Widget) m_mainWidget, n+1, False);
 202 }
 203
 204 int wxComboBox::GetSelection (void) const
 205 {
 206     int sel = XmComboBoxGetSelectedPos((Widget) m_mainWidget);
 207     if (sel == 0)
 208         return -1;
 209     else
 210         return sel - 1;
 211 }
 212
 213 wxString wxComboBox::GetString(unsigned int n) const
 214 {
 215     wxStringList::Node *node = m_stringList.Item(n);
 216     if (node)
 217         return wxString(node->GetData ());
 218     else
 219         return wxEmptyString;
 220 }
 221
 222 int wxComboBox::FindString(const wxString& s, bool WXUNUSED(bCase)) const
 223 {
 224     // FIXME: back to base class for not supported value of bCase
 225
 226     int *pos_list = NULL;
 227     int count = 0;
 228     wxXmString text( s );
 229     bool found = (XmComboBoxGetMatchPos((Widget) m_mainWidget,
 230         text(), &pos_list, &count) != 0);
 231
 232     if (found && count > 0)
 233     {
 234         int pos = pos_list[0] - 1;
 235         free(pos_list);
 236         return pos;
 237     }
 238
 239     return wxNOT_FOUND;
 240 }
 241
 242 void  wxComboBoxCallback (Widget WXUNUSED(w), XtPointer clientData,
 243                           XmComboBoxSelectionCallbackStruct * cbs)
 244 {
 245     wxComboBox *item = (wxComboBox *) clientData;
 246
 247     switch (cbs->reason)
 248     {
 249     case XmCR_SINGLE_SELECT:
 250     case XmCR_BROWSE_SELECT:
 251         {
 252             wxCommandEvent event (wxEVT_COMMAND_COMBOBOX_SELECTED,
 253                                   item->GetId());
 254             event.SetInt(cbs->index - 1);
 255             event.SetString( item->GetString ( event.GetInt() ) );
 256             if ( item->HasClientObjectData() )
 257                 event.SetClientObject( item->GetClientObject(cbs->index - 1) );
 258             else if ( item->HasClientUntypedData() )
 259                 event.SetClientData( item->GetClientData(cbs->index - 1) );
 260             event.SetExtraLong(true);
 261             event.SetEventObject(item);
 262             item->ProcessCommand (event);
 263             break;
 264         }
 265     case XmCR_VALUE_CHANGED:
 266         {
 267             wxCommandEvent event (wxEVT_COMMAND_TEXT_UPDATED, item->GetId());
 268             event.SetInt(-1);
 269             event.SetString( item->GetValue() );
 270             event.SetExtraLong(true);
 271             event.SetEventObject(item);
 272             item->ProcessCommand (event);
 273             break;
 274         }
 275     default:
 276         break;
 277     }
 278 }
 279
 280 void wxComboBox::ChangeFont(bool keepOriginalSize)
 281 {
 282     // Don't use the base class wxChoice's ChangeFont
 283     wxWindow::ChangeFont(keepOriginalSize);
 284 }
 285
 286 void wxComboBox::ChangeBackgroundColour()
 287 {
 288     wxWindow::ChangeBackgroundColour();
 289 }
 290
 291 void wxComboBox::ChangeForegroundColour()
 292 {
 293     wxWindow::ChangeForegroundColour();
 294 }
 295
 296 wxSize wxComboBox::DoGetBestSize() const
 297 {
 298     if( (GetWindowStyle() & wxCB_DROPDOWN) == wxCB_DROPDOWN ||
 299         (GetWindowStyle() & wxCB_READONLY) == wxCB_READONLY )
 300     {
 301         wxSize items = GetItemsSize();
 302         // FIXME arbitrary constants
 303         return wxSize( ( items.x ? items.x + 50 : 120 ),
 304                          items.y + 10 );
 305     }
 306     else
 307         return wxWindow::DoGetBestSize();
 308 }
 309
 310 WXWidget wxComboBox::GetTextWidget() const
 311 {
 312     return (WXWidget)XmComboBoxGetEditWidget((Widget) m_mainWidget);
 313 }
 314
 315 #endif // XmVersion < 2000
 316
 317 #endif // wxUSE_COMBOBOX