src/gtk/listbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        listbox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Id:
   7 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "listbox.h"
  14 #endif
  15
  16 #include "wx/dynarray.h"
  17 #include "wx/listbox.h"
  18 #include "wx/utils.h"
  19 #include <wx/intl.h>
  20
  21 //-----------------------------------------------------------------------------
  22 // data
  23 //-----------------------------------------------------------------------------
  24
  25 extern bool   g_blockEventsOnDrag;
  26
  27 //-----------------------------------------------------------------------------
  28 // wxListBox
  29 //-----------------------------------------------------------------------------
  30
  31 static void gtk_listitem_select_callback( GtkWidget *WXUNUSED(widget), wxListBox *listbox )
  32 {
  33   if (!listbox->HasVMT()) return;
  34   if (g_blockEventsOnDrag) return;
  35
  36   wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
  37
  38     wxArrayInt aSelections;
  39     int count = listbox->GetSelections(aSelections);
  40     if ( count > 0 )
  41     {
  42       event.m_commandInt = aSelections[0] ;
  43       event.m_clientData = listbox->GetClientData(event.m_commandInt);
  44       wxString str(listbox->GetString(event.m_commandInt));
  45       if (str != "")
  46         event.m_commandString = copystring((char *)(const char *)str);
  47     }
  48     else
  49     {
  50       event.m_commandInt = -1 ;
  51       event.m_commandString = copystring("") ;
  52     }
  53
  54   event.SetEventObject( listbox );
  55
  56   listbox->GetEventHandler()->ProcessEvent( event );
  57   if (event.m_commandString) delete[] event.m_commandString ;
  58 }
  59
  60 //-----------------------------------------------------------------------------
  61
  62 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
  63
  64 wxListBox::wxListBox(void)
  65 {
  66   m_list = (GtkList *) NULL;
  67 }
  68
  69 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
  70       const wxPoint &pos, const wxSize &size,
  71       int n, const wxString choices[],
  72       long style, const wxValidator& validator, const wxString &name )
  73 {
  74   m_needParent = TRUE;
  75
  76   PreCreation( parent, id, pos, size, style, name );
  77
  78   SetValidator( validator );
  79
  80   m_widget = gtk_scrolled_window_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
  81   gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
  82     GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
  83
  84   m_list = GTK_LIST( gtk_list_new() );
  85
  86   // @@ what's the difference between BROWSE and SINGLE?
  87   GtkSelectionMode mode = GTK_SELECTION_BROWSE;
  88   if ( style & wxLB_MULTIPLE )
  89     mode = GTK_SELECTION_MULTIPLE;
  90   else if ( style & wxLB_EXTENDED )
  91     mode = GTK_SELECTION_EXTENDED;
  92
  93   gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
  94
  95   gtk_container_add (GTK_CONTAINER(m_widget), GTK_WIDGET(m_list) );
  96   gtk_widget_show( GTK_WIDGET(m_list) );
  97
  98   for (int i = 0; i < n; i++)
  99   {
 100     GtkWidget *list_item;
 101     list_item = gtk_list_item_new_with_label( choices[i] );
 102
 103     gtk_container_add( GTK_CONTAINER(m_list), list_item );
 104
 105     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 106       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 107
 108     if ( style & wxLB_MULTIPLE )
 109       gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 110         GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 111
 112     m_clientData.Append( (wxObject*)NULL );
 113
 114     gtk_widget_show( list_item );
 115   }
 116
 117   PostCreation();
 118
 119   gtk_widget_realize( GTK_WIDGET(m_list) );
 120
 121   Show( TRUE );
 122
 123   return TRUE;
 124 }
 125
 126 void wxListBox::Append( const wxString &item )
 127 {
 128   Append( item, (char*)NULL );
 129 }
 130
 131 void wxListBox::Append( const wxString &item, char *clientData )
 132 {
 133   GtkWidget *list_item;
 134   list_item = gtk_list_item_new_with_label( item );
 135
 136   gtk_signal_connect( GTK_OBJECT(list_item), "select",
 137     GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 138
 139   if ( GetWindowStyleFlag() & wxLB_MULTIPLE )
 140     gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 141       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 142
 143   gtk_container_add( GTK_CONTAINER(m_list), list_item );
 144
 145   m_clientData.Append( (wxObject*)clientData );
 146
 147   gtk_widget_show( list_item );
 148 }
 149
 150 void wxListBox::Clear(void)
 151 {
 152   gtk_list_clear_items( m_list, 0, Number() );
 153
 154   m_clientData.Clear();
 155 }
 156
 157 void wxListBox::Delete( int n )
 158 {
 159   gtk_list_clear_items( m_list, n, n );
 160
 161   wxNode *node = m_clientData.Nth( n );
 162   if (!node)
 163   {
 164     wxFAIL_MSG("wxListBox::Delete wrong index");
 165   }
 166   else
 167     m_clientData.DeleteNode( node );
 168 }
 169
 170 void wxListBox::Deselect( int n )
 171 {
 172   gtk_list_unselect_item( m_list, n );
 173 }
 174
 175 int wxListBox::FindString( const wxString &item ) const
 176 {
 177   GList *child = m_list->children;
 178   int count = 0;
 179   while (child)
 180   {
 181     GtkBin *bin = GTK_BIN( child->data );
 182     GtkLabel *label = GTK_LABEL( bin->child );
 183     if (item == label->label) return count;
 184     count++;
 185     child = child->next;
 186   }
 187   return -1;
 188 }
 189
 190 char *wxListBox::GetClientData( int n ) const
 191 {
 192   wxNode *node = m_clientData.Nth( n );
 193   if (node) return ((char*)node->Data());
 194   return (char *) NULL;
 195 }
 196
 197 int wxListBox::GetSelection(void) const
 198 {
 199   GList *selection = m_list->selection;
 200   if (selection)
 201   {
 202     GList *child = m_list->children;
 203     int count = 0;
 204     while (child)
 205     {
 206       if (child->data == selection->data) return count;
 207       count++;
 208       child = child->next;
 209     }
 210   }
 211   return -1;
 212 }
 213
 214 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 215 {
 216   // get the number of selected items first
 217   GList *child = m_list->children;
 218   int count = 0;
 219   for ( child = m_list->children; child != NULL; child = child->next ) {
 220     if ( GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED )
 221       count++;
 222   }
 223
 224   aSelections.Empty();
 225
 226   if ( count > 0 ) {
 227     // now fill the list
 228     aSelections.Alloc(count); // optimization attempt
 229     int i = 0;
 230     for ( child = m_list->children; child != NULL; child = child->next, i++ ) {
 231       if ( GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED )
 232         aSelections.Add(i);
 233     }
 234   }
 235
 236   return count;
 237 }
 238
 239 wxString wxListBox::GetString( int n ) const
 240 {
 241   GList *child = g_list_nth( m_list->children, n );
 242   if (child)
 243   {
 244     GtkBin *bin = GTK_BIN( child->data );
 245     GtkLabel *label = GTK_LABEL( bin->child );
 246     return label->label;
 247   }
 248   return "";
 249 }
 250
 251 wxString wxListBox::GetStringSelection(void) const
 252 {
 253   GList *selection = m_list->selection;
 254   if (selection)
 255   {
 256     GtkBin *bin = GTK_BIN( selection->data );
 257     wxString tmp = GTK_LABEL( bin->child )->label;
 258     return tmp;
 259   }
 260   return "";
 261 }
 262
 263 int wxListBox::Number(void)
 264 {
 265   GList *child = m_list->children;
 266   int count = 0;
 267   while (child) { count++; child = child->next; }
 268   return count;
 269 }
 270
 271 bool wxListBox::Selected( int n )
 272 {
 273   GList *target = g_list_nth( m_list->children, n );
 274   if (target)
 275   {
 276     GList *child = m_list->selection;
 277     while (child)
 278     {
 279       if (child->data == target->data) return TRUE;
 280       child = child->next;
 281     }
 282   }
 283   return FALSE;
 284 }
 285
 286 void wxListBox::Set( int WXUNUSED(n), const wxString *WXUNUSED(choices) )
 287 {
 288 }
 289
 290 void wxListBox::SetClientData( int n, char *clientData )
 291 {
 292   wxNode *node = m_clientData.Nth( n );
 293   if (node) node->SetData( (wxObject*)clientData );
 294 }
 295
 296 void wxListBox::SetFirstItem( int WXUNUSED(n) )
 297 {
 298 }
 299
 300 void wxListBox::SetFirstItem( const wxString &WXUNUSED(item) )
 301 {
 302 }
 303
 304 void wxListBox::SetSelection( int n, bool select )
 305 {
 306   if (select)
 307     gtk_list_select_item( m_list, n );
 308   else
 309     gtk_list_unselect_item( m_list, n );
 310 }
 311
 312 void wxListBox::SetString( int n, const wxString &string )
 313 {
 314   GList *child = g_list_nth( m_list->children, n );
 315   if (child)
 316   {
 317     GtkBin *bin = GTK_BIN( child->data );
 318     GtkLabel *label = GTK_LABEL( bin->child );
 319     gtk_label_set( label, string );
 320   }
 321 }
 322
 323 void wxListBox::SetStringSelection( const wxString &string, bool select )
 324 {
 325   SetSelection( FindString(string), select );
 326 }
 327
 328 int wxListBox::GetIndex( GtkWidget *item ) const
 329 {
 330   if (item)
 331   {
 332     GList *child = m_list->children;
 333     int count = 0;
 334     while (child)
 335     {
 336       if (GTK_WIDGET(child->data) == item) return count;
 337       count++;
 338       child = child->next;
 339     }
 340   }
 341   return -1;
 342 }
 343
 344 GtkWidget *wxListBox::GetConnectWidget(void)
 345 {
 346   return GTK_WIDGET(m_list);
 347 }
 348
 349
 350