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   GList *child = g_list_nth( m_list->children, n );
 160
 161   if (!child)
 162   {
 163     wxFAIL_MSG("wrong listbox index");
 164     return;
 165   }
 166
 167   GList *list = g_list_append( NULL, child->data );
 168   gtk_list_remove_items( m_list, list );
 169   g_list_free( list );
 170
 171   wxNode *node = m_clientData.Nth( n );
 172   if (!node)
 173   {
 174     wxFAIL_MSG("wrong listbox index");
 175   }
 176   else
 177     m_clientData.DeleteNode( node );
 178 }
 179
 180 void wxListBox::Deselect( int n )
 181 {
 182   gtk_list_unselect_item( m_list, n );
 183 }
 184
 185 int wxListBox::FindString( const wxString &item ) const
 186 {
 187   GList *child = m_list->children;
 188   int count = 0;
 189   while (child)
 190   {
 191     GtkBin *bin = GTK_BIN( child->data );
 192     GtkLabel *label = GTK_LABEL( bin->child );
 193     if (item == label->label) return count;
 194     count++;
 195     child = child->next;
 196   }
 197   wxFAIL_MSG("wrong listbox index");
 198   return -1;
 199 }
 200
 201 char *wxListBox::GetClientData( int n ) const
 202 {
 203   wxNode *node = m_clientData.Nth( n );
 204   if (node) return ((char*)node->Data());
 205
 206   wxFAIL_MSG("wrong listbox index");
 207   return (char *) NULL;
 208 }
 209
 210 int wxListBox::GetSelection(void) const
 211 {
 212   GList *selection = m_list->selection;
 213   if (selection)
 214   {
 215     GList *child = m_list->children;
 216     int count = 0;
 217     while (child)
 218     {
 219       if (child->data == selection->data) return count;
 220       count++;
 221       child = child->next;
 222     }
 223   }
 224   wxFAIL_MSG("wrong listbox index");
 225   return -1;
 226 }
 227
 228 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 229 {
 230   // get the number of selected items first
 231   GList *child = m_list->children;
 232   int count = 0;
 233   for ( child = m_list->children; child != NULL; child = child->next ) {
 234     if ( GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED )
 235       count++;
 236   }
 237
 238   aSelections.Empty();
 239
 240   if ( count > 0 ) {
 241     // now fill the list
 242     aSelections.Alloc(count); // optimization attempt
 243     int i = 0;
 244     for ( child = m_list->children; child != NULL; child = child->next, i++ ) {
 245       if ( GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED )
 246         aSelections.Add(i);
 247     }
 248   }
 249
 250   return count;
 251 }
 252
 253 wxString wxListBox::GetString( int n ) const
 254 {
 255   GList *child = g_list_nth( m_list->children, n );
 256   if (child)
 257   {
 258     GtkBin *bin = GTK_BIN( child->data );
 259     GtkLabel *label = GTK_LABEL( bin->child );
 260     return label->label;
 261   }
 262   wxFAIL_MSG("wrong listbox index");
 263   return "";
 264 }
 265
 266 wxString wxListBox::GetStringSelection(void) const
 267 {
 268   GList *selection = m_list->selection;
 269   if (selection)
 270   {
 271     GtkBin *bin = GTK_BIN( selection->data );
 272     wxString tmp = GTK_LABEL( bin->child )->label;
 273     return tmp;
 274   }
 275   wxFAIL_MSG("no listbox selection available");
 276   return "";
 277 }
 278
 279 int wxListBox::Number(void)
 280 {
 281   GList *child = m_list->children;
 282   int count = 0;
 283   while (child) { count++; child = child->next; }
 284   return count;
 285 }
 286
 287 bool wxListBox::Selected( int n )
 288 {
 289   GList *target = g_list_nth( m_list->children, n );
 290   if (target)
 291   {
 292     GList *child = m_list->selection;
 293     while (child)
 294     {
 295       if (child->data == target->data) return TRUE;
 296       child = child->next;
 297     }
 298   }
 299   wxFAIL_MSG("wrong listbox index");
 300   return FALSE;
 301 }
 302
 303 void wxListBox::Set( int WXUNUSED(n), const wxString *WXUNUSED(choices) )
 304 {
 305   wxFAIL_MSG("wxListBox::Set not implemented");
 306 }
 307
 308 void wxListBox::SetClientData( int n, char *clientData )
 309 {
 310   wxNode *node = m_clientData.Nth( n );
 311   if (node)
 312   {
 313     node->SetData( (wxObject*)clientData );
 314   }
 315   else
 316   {
 317     wxFAIL_MSG("wrong listbox index");
 318   }
 319 }
 320
 321 void wxListBox::SetFirstItem( int WXUNUSED(n) )
 322 {
 323   wxFAIL_MSG("wxListBox::SetFirstItem not implemented");
 324 }
 325
 326 void wxListBox::SetFirstItem( const wxString &WXUNUSED(item) )
 327 {
 328   wxFAIL_MSG("wxListBox::SetFirstItem not implemented");
 329 }
 330
 331 void wxListBox::SetSelection( int n, bool select )
 332 {
 333   if (select)
 334     gtk_list_select_item( m_list, n );
 335   else
 336     gtk_list_unselect_item( m_list, n );
 337 }
 338
 339 void wxListBox::SetString( int n, const wxString &string )
 340 {
 341   GList *child = g_list_nth( m_list->children, n );
 342   if (child)
 343   {
 344     GtkBin *bin = GTK_BIN( child->data );
 345     GtkLabel *label = GTK_LABEL( bin->child );
 346     gtk_label_set( label, string );
 347   }
 348   else
 349   {
 350     wxFAIL_MSG("wrong listbox index");
 351   }
 352 }
 353
 354 void wxListBox::SetStringSelection( const wxString &string, bool select )
 355 {
 356   SetSelection( FindString(string), select );
 357 }
 358
 359 int wxListBox::GetIndex( GtkWidget *item ) const
 360 {
 361   if (item)
 362   {
 363     GList *child = m_list->children;
 364     int count = 0;
 365     while (child)
 366     {
 367       if (GTK_WIDGET(child->data) == item) return count;
 368       count++;
 369       child = child->next;
 370     }
 371   }
 372   return -1;
 373 }
 374
 375 GtkWidget *wxListBox::GetConnectWidget(void)
 376 {
 377   return GTK_WIDGET(m_list);
 378 }
 379
 380
 381