src/motif/combobox_native.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/combobox_native.cpp
   3 // Purpose:     wxComboBox class
   4 // Author:      Julian Smart, Ian Brown
   5 // Modified by:
   6 // Created:     01/02/03
   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 new, shiny combobox for Motif 2.x
  32 #if (XmVersion >= 2000)
  33
  34 #ifdef __VMS__
  35 #pragma message disable nosimpint
  36 #endif
  37 #include <Xm/ComboBox.h>
  38 #include <Xm/Text.h>
  39 #include <Xm/List.h>
  40 #ifdef __VMS__
  41 #pragma message enable nosimpint
  42 #endif
  43
  44 #include "wx/motif/private.h"
  45
  46 // utility
  47 static Widget GetXmList( const wxComboBox* cb )
  48 {
  49     Widget ret;
  50     XtVaGetValues( (Widget)cb->GetMainWidget(),
  51                    XmNlist, &ret,
  52                    NULL );
  53
  54     return ret;
  55 }
  56
  57 static Widget GetXmText( const wxComboBox* cb )
  58 {
  59     Widget ret;
  60     XtVaGetValues( (Widget)cb->GetMainWidget(),
  61                    XmNtextField, &ret,
  62                    NULL );
  63
  64     return ret;
  65 }
  66
  67 void  wxComboBoxCallback (Widget w, XtPointer clientData,
  68                           XmComboBoxCallbackStruct * cbs);
  69
  70 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
  71
  72 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
  73                         const wxString& value,
  74                         const wxPoint& pos,
  75                         const wxSize& size,
  76                         int n, const wxString choices[],
  77                         long style,
  78                         const wxValidator& validator,
  79                         const wxString& name)
  80 {
  81     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  82         return false;
  83     PreCreation();
  84
  85     Widget parentWidget = (Widget) parent->GetClientWidget();
  86
  87     int cb_type = ( style & wxCB_SIMPLE ) ? XmCOMBO_BOX :
  88                   ( style & wxCB_READONLY ) ? XmDROP_DOWN_LIST :
  89                   ( style & wxCB_DROPDOWN ) ? XmDROP_DOWN_COMBO_BOX :
  90     // default to wxCB_DROPDOWN
  91                                               XmDROP_DOWN_COMBO_BOX;
  92     if( cb_type == XmDROP_DOWN_COMBO_BOX )
  93         SetWindowStyle( style | wxCB_DROPDOWN );
  94
  95     Widget buttonWidget= XtVaCreateManagedWidget(name.c_str(),
  96         xmComboBoxWidgetClass, parentWidget,
  97         XmNcomboBoxType, cb_type,
  98         NULL);
  99
 100     m_mainWidget = (Widget) buttonWidget;
 101
 102     int i;
 103     for ( i = 0; i < n; ++i)
 104         Append( choices[i] );
 105
 106     XtManageChild (buttonWidget);
 107
 108     SetValue(value);
 109
 110     XtAddCallback (buttonWidget, XmNselectionCallback,
 111                    (XtCallbackProc) wxComboBoxCallback,
 112                    (XtPointer) this);
 113     XtAddCallback (GetXmText(this), XmNvalueChangedCallback,
 114                    (XtCallbackProc) wxComboBoxCallback,
 115                    (XtPointer) this);
 116
 117     wxSize best = GetBestSize();
 118     if( size.x != wxDefaultCoord ) best.x = size.x;
 119     if( size.y != wxDefaultCoord ) best.y = size.y;
 120
 121     PostCreation();
 122     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
 123                   pos.x, pos.y, best.x, best.y);
 124
 125     return true;
 126 }
 127
 128 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 129                         const wxString& value,
 130                         const wxPoint& pos,
 131                         const wxSize& size,
 132                         const wxArrayString& choices,
 133                         long style,
 134                         const wxValidator& validator,
 135                         const wxString& name)
 136 {
 137     wxCArrayString chs(choices);
 138     return Create(parent, id, value, pos, size, chs.GetCount(),
 139                   chs.GetStrings(), style, validator, name);
 140 }
 141
 142 void wxComboBox::AdjustDropDownListSize()
 143 {
 144     int newListCount = -1, itemCount = GetCount();
 145     const int MAX = 12;
 146
 147     if( !itemCount )
 148         newListCount = 1;
 149     else if( itemCount < MAX )
 150         newListCount = itemCount;
 151     else
 152         newListCount = MAX;
 153
 154     XtVaSetValues( GetXmList(this),
 155                    XmNvisibleItemCount, newListCount,
 156                    NULL );
 157 }
 158
 159 wxComboBox::~wxComboBox()
 160 {
 161     DetachWidget((Widget) m_mainWidget); // Removes event handlers
 162     XtDestroyWidget((Widget) m_mainWidget);
 163     m_mainWidget = (WXWidget) 0;
 164 }
 165
 166 void wxComboBox::DoSetSize(int x, int y, int width, int WXUNUSED(height), int sizeFlags)
 167 {
 168     // Necessary so it doesn't call wxChoice::SetSize
 169     wxWindow::DoSetSize(x, y, width, DoGetBestSize().y, sizeFlags);
 170 }
 171
 172 void wxComboBox::SetString(unsigned int n, const wxString& s)
 173 {
 174     wxXmString text(s);
 175     Widget listBox = GetXmList(this);
 176
 177     // delete the item and add it again.
 178     // FIXME isn't there a way to change it in place?
 179     XmListDeletePos (listBox, n+1);
 180     XmListAddItem (listBox, text(), n+1);
 181 }
 182
 183 void wxComboBox::SetValue(const wxString& value)
 184 {
 185     m_inSetValue = true;
 186
 187     XtVaSetValues( GetXmText(this),
 188                    XmNvalue, (const char*)value.mb_str(),
 189                    NULL);
 190
 191     m_inSetValue = false;
 192 }
 193
 194 int wxComboBox::DoInsertItems(const wxArrayStringsAdapter & items,
 195                               unsigned int pos,
 196                               void **clientData, wxClientDataType type)
 197 {
 198     const unsigned int numItems = items.GetCount();
 199
 200     AllocClientData(numItems);
 201     for ( unsigned int i = 0; i < numItems; ++i, ++pos )
 202     {
 203         wxXmString str( items[i].c_str() );
 204         XmComboBoxAddItem((Widget) m_mainWidget, str(),
 205                           GetMotifPosition(pos), False);
 206         m_noStrings ++;
 207         InsertNewItemClientData(pos, clientData, i, type);
 208     }
 209
 210     AdjustDropDownListSize();
 211
 212     return pos - 1;
 213 }
 214
 215 void wxComboBox::DoDeleteOneItem(unsigned int n)
 216 {
 217 #ifdef LESSTIF_VERSION
 218     XmListDeletePos (GetXmList(this), n + 1);
 219 #else
 220     XmComboBoxDeletePos((Widget) m_mainWidget, n+1);
 221 #endif
 222
 223     wxControlWithItems::DoDeleteOneItem(n);
 224     m_noStrings--;
 225
 226     AdjustDropDownListSize();
 227 }
 228
 229 void wxComboBox::DoClear()
 230 {
 231 #ifdef LESSTIF_VERSION
 232     XmListDeleteAllItems (GetXmList(this));
 233 #else
 234     while(m_noStrings > 0)
 235     {
 236         XmComboBoxDeletePos((Widget) m_mainWidget, m_noStrings--);
 237     }
 238 #endif
 239
 240     wxControlWithItems::DoClear();
 241     m_noStrings = 0;
 242     AdjustDropDownListSize();
 243 }
 244
 245 void wxComboBox::SetSelection (int n)
 246 {
 247     m_inSetSelection = true;
 248
 249 #if wxCHECK_LESSTIF()
 250     XmListSelectPos (GetXmList(this), n + 1, false);
 251     SetValue(GetString(n));
 252 #else
 253 #if 0
 254     wxXmString str(GetString(n).c_str());
 255     XmComboBoxSelectItem((Widget) m_mainWidget, str());
 256 #endif
 257     XtVaSetValues( (Widget)m_mainWidget,
 258                    XmNselectedPosition, n,
 259                    NULL );
 260 #endif
 261
 262     m_inSetSelection = false;
 263 }
 264
 265 int wxComboBox::GetSelection (void) const
 266 {
 267     return wxDoGetSelectionInList( GetXmList( this ) );
 268 }
 269
 270 wxString wxComboBox::GetString(unsigned int n) const
 271 {
 272     return wxDoGetStringInList( GetXmList(this), n );
 273 }
 274
 275 int wxComboBox::FindString(const wxString& s, bool WXUNUSED(bCase)) const
 276 {
 277     // FIXME: back to base class for not supported value of bCase
 278
 279     return wxDoFindStringInList( GetXmList( this ), s );
 280 }
 281
 282 void wxComboBox::SetEditable(bool WXUNUSED(editable))
 283 {
 284     // TODO
 285 }
 286
 287 void  wxComboBoxCallback (Widget WXUNUSED(w), XtPointer clientData,
 288                           XmComboBoxCallbackStruct * cbs)
 289 {
 290     wxComboBox *item = (wxComboBox *) clientData;
 291
 292     if( item->m_inSetSelection ) return;
 293
 294     switch (cbs->reason)
 295     {
 296     case XmCR_SELECT:
 297 #if 0
 298     case XmCR_SINGLE_SELECT:
 299     case XmCR_BROWSE_SELECT:
 300 #endif
 301         {
 302             wxCommandEvent event (wxEVT_COMMAND_COMBOBOX_SELECTED,
 303                                   item->GetId());
 304             int idx = cbs->item_position;
 305             event.SetInt(idx);
 306             event.SetString( item->GetString (idx) );
 307             if ( item->HasClientObjectData() )
 308                 event.SetClientObject( item->GetClientObject(idx) );
 309             else if ( item->HasClientUntypedData() )
 310                 event.SetClientData( item->GetClientData(idx) );
 311             event.SetExtraLong(true);
 312             event.SetEventObject(item);
 313             item->GetEventHandler()->ProcessEvent(event);
 314             break;
 315         }
 316     case XmCR_VALUE_CHANGED:
 317         {
 318             wxCommandEvent event (wxEVT_COMMAND_TEXT_UPDATED, item->GetId());
 319             event.SetInt(-1);
 320             event.SetString( item->GetValue() );
 321             event.SetExtraLong(true);
 322             event.SetEventObject(item);
 323             item->GetEventHandler()->ProcessEvent(event);
 324             break;
 325         }
 326     default:
 327         break;
 328     }
 329 }
 330
 331 void wxComboBox::ChangeFont(bool keepOriginalSize)
 332 {
 333     if( m_font.Ok() && m_mainWidget != NULL )
 334     {
 335         wxDoChangeFont( GetXmText(this), m_font );
 336         wxDoChangeFont( GetXmList(this), m_font );
 337     }
 338
 339     // Don't use the base class wxChoice's ChangeFont
 340     wxWindow::ChangeFont(keepOriginalSize);
 341 }
 342
 343 void wxComboBox::ChangeBackgroundColour()
 344 {
 345     wxWindow::ChangeBackgroundColour();
 346 }
 347
 348 void wxComboBox::ChangeForegroundColour()
 349 {
 350     wxWindow::ChangeForegroundColour();
 351 }
 352
 353 wxSize wxComboBox::DoGetBestSize() const
 354 {
 355     if( (GetWindowStyle() & wxCB_DROPDOWN) == wxCB_DROPDOWN ||
 356         (GetWindowStyle() & wxCB_READONLY) == wxCB_READONLY )
 357     {
 358         Dimension arrowW, arrowS, highlight, xmargin, ymargin, shadow;
 359
 360         XtVaGetValues( (Widget)m_mainWidget,
 361                        XmNarrowSize, &arrowW,
 362                        XmNarrowSpacing, &arrowS,
 363                        XmNhighlightThickness, &highlight,
 364                        XmNmarginWidth, &xmargin,
 365                        XmNmarginHeight, &ymargin,
 366                        XmNshadowThickness, &shadow,
 367                        NULL );
 368
 369         wxSize listSize = wxDoGetListBoxBestSize( GetXmList(this), this );
 370         wxSize textSize = wxDoGetSingleTextCtrlBestSize( GetXmText(this),
 371                                                          this );
 372
 373         // FIXME arbitrary constants
 374         return wxSize( listSize.x + arrowW + arrowS + 2 * highlight
 375                                   + 2 * shadow + 2 * xmargin ,
 376                        textSize.y + 2 * highlight + 2 * ymargin + 2 * shadow );
 377     }
 378     else
 379         return wxWindow::DoGetBestSize();
 380 }
 381
 382 WXWidget wxComboBox::GetTextWidget() const
 383 {
 384     return (WXWidget)GetXmText(this);
 385 }
 386
 387 #endif // XmVersion >= 2000
 388
 389 #endif // wxUSE_COMBOBOX