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 #include <Xm/Xm.h>
  21 #include "xmcombo/xmcombo.h"
  22
  23 void  wxComboBoxCallback (Widget w, XtPointer clientData,
  24                           XmComboBoxSelectionCallbackStruct * cbs);
  25
  26 #if !USE_SHARED_LIBRARY
  27 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  28 #endif
  29
  30 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  31                         const wxString& value,
  32                         const wxPoint& pos,
  33                         const wxSize& size,
  34                         int n, const wxString choices[],
  35                         long style,
  36                         const wxValidator& validator,
  37                         const wxString& name)
  38 {
  39     SetName(name);
  40     SetValidator(validator);
  41     m_noStrings = n;
  42     m_windowStyle = style;
  43     //    m_backgroundColour = parent->GetBackgroundColour();
  44     m_backgroundColour = * wxWHITE;
  45     m_foregroundColour = parent->GetForegroundColour();
  46
  47     if (parent) parent->AddChild(this);
  48
  49     if ( id == -1 )
  50         m_windowId = (int)NewControlId();
  51     else
  52         m_windowId = id;
  53
  54     Widget parentWidget = (Widget) parent->GetClientWidget();
  55
  56     Widget buttonWidget = XtVaCreateManagedWidget((char*) (const char*) name,
  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     XtAddCallback (buttonWidget, XmNselectionCallback, (XtCallbackProc) wxComboBoxCallback,
  67         (XtPointer) this);
  68     XtAddCallback (buttonWidget, XmNvalueChangedCallback, (XtCallbackProc) wxComboBoxCallback,
  69         (XtPointer) this);
  70
  71     int i;
  72     for (i = 0; i < n; i++)
  73     {
  74         XmString str = XmStringCreateLtoR((char*) (const char*) choices[i], XmSTRING_DEFAULT_CHARSET);
  75         XmComboBoxAddItem(buttonWidget, str, 0);
  76         XmStringFree(str);
  77         m_stringList.Add(choices[i]);
  78     }
  79     m_noStrings = n;
  80
  81     m_mainWidget = (Widget) buttonWidget;
  82
  83     XtManageChild (buttonWidget);
  84
  85     SetValue(value);
  86
  87     m_windowFont = parent->GetFont();
  88     ChangeFont(FALSE);
  89
  90     SetCanAddEventHandler(TRUE);
  91     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
  92
  93     ChangeBackgroundColour();
  94
  95     return TRUE;
  96 }
  97
  98 wxComboBox::~wxComboBox()
  99 {
 100     DetachWidget((Widget) m_mainWidget); // Removes event handlers
 101     XtDestroyWidget((Widget) m_mainWidget);
 102     m_mainWidget = (WXWidget) 0;
 103 }
 104
 105 void wxComboBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 106 {
 107     // Necessary so it doesn't call wxChoice::SetSize
 108     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
 109 }
 110
 111 wxString wxComboBox::GetValue() const
 112 {
 113     char *s = XmComboBoxGetString ((Widget) m_mainWidget);
 114     if (s)
 115     {
 116         wxString str(s);
 117         XtFree (s);
 118         return str;
 119     }
 120     else
 121         return wxEmptyString;
 122 }
 123
 124 void wxComboBox::SetValue(const wxString& value)
 125 {
 126     m_inSetValue = TRUE;
 127     if (!value.IsNull())
 128         XmComboBoxSetString ((Widget) m_mainWidget, (char*) (const char*) value);
 129     m_inSetValue = FALSE;
 130 }
 131
 132 void wxComboBox::Append(const wxString& item)
 133 {
 134     XmString str = XmStringCreateLtoR((char*) (const char*) item, XmSTRING_DEFAULT_CHARSET);
 135     XmComboBoxAddItem((Widget) m_mainWidget, str, 0);
 136     m_stringList.Add(item);
 137     XmStringFree(str);
 138     m_noStrings ++;
 139 }
 140
 141 void wxComboBox::Delete(int n)
 142 {
 143     XmComboBoxDeletePos((Widget) m_mainWidget, n-1);
 144     wxNode *node = m_stringList.Nth(n);
 145     if (node)
 146     {
 147         delete[] (char *)node->Data();
 148         delete node;
 149     }
 150     m_noStrings--;
 151 }
 152
 153 void wxComboBox::Clear()
 154 {
 155     XmComboBoxDeleteAllItems((Widget) m_mainWidget);
 156     m_stringList.Clear();
 157 }
 158
 159 void wxComboBox::SetSelection (int n)
 160 {
 161     XmComboBoxSelectPos((Widget) m_mainWidget, n+1, False);
 162 }
 163
 164 int wxComboBox::GetSelection (void) const
 165 {
 166     int sel = XmComboBoxGetSelectedPos((Widget) m_mainWidget);
 167     if (sel == 0)
 168         return -1;
 169     else
 170         return sel - 1;
 171 }
 172
 173 wxString wxComboBox::GetString(int n) const
 174 {
 175     wxNode *node = m_stringList.Nth (n);
 176     if (node)
 177         return wxString((char *) node->Data ());
 178     else
 179         return wxEmptyString;
 180 }
 181
 182 wxString wxComboBox::GetStringSelection() const
 183 {
 184     int sel = GetSelection();
 185     if (sel == -1)
 186         return wxEmptyString;
 187     else
 188         return GetString(sel);
 189 }
 190
 191 bool wxComboBox::SetStringSelection(const wxString& sel)
 192 {
 193     int n = FindString(sel);
 194     if (n == -1)
 195         return FALSE;
 196     else
 197     {
 198         SetSelection(n);
 199         return TRUE;
 200     }
 201 }
 202
 203 int wxComboBox::FindString(const wxString& s) const
 204 {
 205     int *pos_list = NULL;
 206     int count = 0;
 207     XmString text = XmStringCreateSimple ((char*) (const char*) s);
 208     bool found = (XmComboBoxGetMatchPos((Widget) m_mainWidget,
 209         text, &pos_list, &count) != 0);
 210
 211     XmStringFree(text);
 212
 213     if (found && count > 0)
 214     {
 215         int pos = pos_list[0] - 1;
 216         free(pos_list);
 217         return pos;
 218     }
 219
 220     return -1;
 221 }
 222
 223 // Clipboard operations
 224 void wxComboBox::Copy()
 225 {
 226     XmComboBoxCopy((Widget) m_mainWidget, CurrentTime);
 227 }
 228
 229 void wxComboBox::Cut()
 230 {
 231     XmComboBoxCut((Widget) m_mainWidget, CurrentTime);
 232 }
 233
 234 void wxComboBox::Paste()
 235 {
 236     XmComboBoxPaste((Widget) m_mainWidget);
 237 }
 238
 239 void wxComboBox::SetEditable(bool WXUNUSED(editable))
 240 {
 241     // TODO
 242 }
 243
 244 void wxComboBox::SetInsertionPoint(long pos)
 245 {
 246     XmComboBoxSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) pos);
 247 }
 248
 249 void wxComboBox::SetInsertionPointEnd()
 250 {
 251     XmTextPosition pos = XmComboBoxGetLastPosition ((Widget) m_mainWidget);
 252     XmComboBoxSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) (pos + 1));
 253 }
 254
 255 long wxComboBox::GetInsertionPoint() const
 256 {
 257     return (long) XmComboBoxGetInsertionPosition ((Widget) m_mainWidget);
 258 }
 259
 260 long wxComboBox::GetLastPosition() const
 261 {
 262     return (long) XmComboBoxGetLastPosition ((Widget) m_mainWidget);
 263 }
 264
 265 void wxComboBox::Replace(long from, long to, const wxString& value)
 266 {
 267     XmComboBoxReplace ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 268         (char*) (const char*) value);
 269 }
 270
 271 void wxComboBox::Remove(long from, long to)
 272 {
 273     XmComboBoxSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 274                       (Time) 0);
 275     XmComboBoxRemove ((Widget) m_mainWidget);
 276 }
 277
 278 void wxComboBox::SetSelection(long from, long to)
 279 {
 280     XmComboBoxSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 281                       (Time) 0);
 282 }
 283
 284 void  wxComboBoxCallback (Widget WXUNUSED(w), XtPointer clientData,
 285                           XmComboBoxSelectionCallbackStruct * cbs)
 286 {
 287     wxComboBox *item = (wxComboBox *) clientData;
 288
 289     switch (cbs->reason)
 290     {
 291     case XmCR_SINGLE_SELECT:
 292     case XmCR_BROWSE_SELECT:
 293         {
 294             wxCommandEvent event (wxEVT_COMMAND_COMBOBOX_SELECTED, item->GetId());
 295             event.m_commandInt = cbs->index - 1;
 296             //          event.m_commandString = item->GetString (event.m_commandInt);
 297             event.m_extraLong = TRUE;
 298             event.SetEventObject(item);
 299             item->ProcessCommand (event);
 300             break;
 301         }
 302     case XmCR_VALUE_CHANGED:
 303         {
 304             wxCommandEvent event (wxEVT_COMMAND_TEXT_UPDATED, item->GetId());
 305             event.m_commandInt = -1;
 306             //          event.m_commandString = item->GetValue();
 307             event.m_extraLong = TRUE;
 308             event.SetEventObject(item);
 309             item->ProcessCommand (event);
 310             break;
 311         }
 312     default:
 313         break;
 314     }
 315 }
 316
 317 void wxComboBox::ChangeFont(bool keepOriginalSize)
 318 {
 319     // Don't use the base class wxChoice's ChangeFont
 320     wxWindow::ChangeFont(keepOriginalSize);
 321 }
 322
 323 void wxComboBox::ChangeBackgroundColour()
 324 {
 325     wxWindow::ChangeBackgroundColour();
 326 }
 327
 328 void wxComboBox::ChangeForegroundColour()
 329 {
 330     wxWindow::ChangeBackgroundColour();
 331 }
 332
 333 #endif
 334