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