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 // "select" and "deselect"
  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 // wxListBox
  62 //-----------------------------------------------------------------------------
  63
  64 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
  65
  66 wxListBox::wxListBox(void)
  67 {
  68   m_list = (GtkList *) NULL;
  69 }
  70
  71 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
  72       const wxPoint &pos, const wxSize &size,
  73       int n, const wxString choices[],
  74       long style, const wxValidator& validator, const wxString &name )
  75 {
  76   m_needParent = TRUE;
  77
  78   PreCreation( parent, id, pos, size, style, name );
  79
  80   SetValidator( validator );
  81
  82   m_widget = gtk_scrolled_window_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
  83   gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
  84     GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
  85
  86   m_list = GTK_LIST( gtk_list_new() );
  87
  88   GtkSelectionMode mode = GTK_SELECTION_SINGLE;
  89   if (style & wxLB_MULTIPLE)
  90     mode = GTK_SELECTION_MULTIPLE;
  91   else if (style & wxLB_EXTENDED)
  92     mode = GTK_SELECTION_EXTENDED;
  93
  94   gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
  95
  96   gtk_container_add (GTK_CONTAINER(m_widget), GTK_WIDGET(m_list) );
  97   gtk_widget_show( GTK_WIDGET(m_list) );
  98
  99   for (int i = 0; i < n; i++)
 100   {
 101     GtkWidget *list_item;
 102     list_item = gtk_list_item_new_with_label( choices[i] );
 103
 104     gtk_container_add( GTK_CONTAINER(m_list), list_item );
 105
 106     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 107       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 108
 109     if (style & wxLB_MULTIPLE)
 110       gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 111         GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 112
 113     m_clientData.Append( (wxObject*)NULL );
 114
 115     gtk_widget_show( list_item );
 116   }
 117
 118   PostCreation();
 119
 120   gtk_widget_realize( GTK_WIDGET(m_list) );
 121
 122   Show( TRUE );
 123
 124   return TRUE;
 125 }
 126
 127 void wxListBox::Append( const wxString &item )
 128 {
 129   Append( item, (char*)NULL );
 130 }
 131
 132 void wxListBox::Append( const wxString &item, char *clientData )
 133 {
 134   GtkWidget *list_item = gtk_list_item_new_with_label( item );
 135
 136   if (m_hasOwnStyle)
 137   {
 138     GtkBin *bin = GTK_BIN( list_item );
 139     gtk_widget_set_style( bin->child,
 140       gtk_style_ref(
 141         gtk_widget_get_style( m_widget ) ) );
 142   }
 143
 144   gtk_signal_connect( GTK_OBJECT(list_item), "select",
 145     GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 146
 147   if (GetWindowStyleFlag() & wxLB_MULTIPLE)
 148     gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 149       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 150
 151   m_clientData.Append( (wxObject*)clientData );
 152
 153   gtk_container_add( GTK_CONTAINER(m_list), list_item );
 154
 155   gtk_widget_show( list_item );
 156
 157   ConnectWidget( list_item );
 158
 159   ConnectDnDWidget( list_item );
 160
 161 }
 162
 163 void wxListBox::Clear(void)
 164 {
 165   gtk_list_clear_items( m_list, 0, Number() );
 166
 167   m_clientData.Clear();
 168 }
 169
 170 void wxListBox::Delete( int n )
 171 {
 172   GList *child = g_list_nth( m_list->children, n );
 173
 174   if (!child)
 175   {
 176     wxFAIL_MSG("wrong listbox index");
 177     return;
 178   }
 179
 180   GList *list = g_list_append( NULL, child->data );
 181   gtk_list_remove_items( m_list, list );
 182   g_list_free( list );
 183
 184   wxNode *node = m_clientData.Nth( n );
 185   if (!node)
 186   {
 187     wxFAIL_MSG("wrong listbox index");
 188   }
 189   else
 190     m_clientData.DeleteNode( node );
 191 }
 192
 193 void wxListBox::Deselect( int n )
 194 {
 195   gtk_list_unselect_item( m_list, n );
 196 }
 197
 198 int wxListBox::FindString( const wxString &item ) const
 199 {
 200   GList *child = m_list->children;
 201   int count = 0;
 202   while (child)
 203   {
 204     GtkBin *bin = GTK_BIN( child->data );
 205     GtkLabel *label = GTK_LABEL( bin->child );
 206     if (item == label->label) return count;
 207     count++;
 208     child = child->next;
 209   }
 210   wxFAIL_MSG("wrong listbox index");
 211   return -1;
 212 }
 213
 214 char *wxListBox::GetClientData( int n ) const
 215 {
 216   wxNode *node = m_clientData.Nth( n );
 217   if (node) return ((char*)node->Data());
 218
 219   wxFAIL_MSG("wrong listbox index");
 220   return (char *) NULL;
 221 }
 222
 223 int wxListBox::GetSelection(void) const
 224 {
 225   GList *selection = m_list->selection;
 226   if (selection)
 227   {
 228     GList *child = m_list->children;
 229     int count = 0;
 230     while (child)
 231     {
 232       if (child->data == selection->data) return count;
 233       count++;
 234       child = child->next;
 235     }
 236   }
 237   wxFAIL_MSG("wrong listbox index");
 238   return -1;
 239 }
 240
 241 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 242 {
 243   // get the number of selected items first
 244   GList *child = m_list->children;
 245   int count = 0;
 246   for ( child = m_list->children; child != NULL; child = child->next )
 247   {
 248     if ( GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED )
 249       count++;
 250   }
 251
 252   aSelections.Empty();
 253
 254   if ( count > 0 ) {
 255     // now fill the list
 256     aSelections.Alloc(count); // optimization attempt
 257     int i = 0;
 258     for ( child = m_list->children; child != NULL; child = child->next, i++ )
 259     {
 260       if ( GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED )
 261         aSelections.Add(i);
 262     }
 263   }
 264
 265   return count;
 266 }
 267
 268 wxString wxListBox::GetString( int n ) const
 269 {
 270   GList *child = g_list_nth( m_list->children, n );
 271   if (child)
 272   {
 273     GtkBin *bin = GTK_BIN( child->data );
 274     GtkLabel *label = GTK_LABEL( bin->child );
 275     return label->label;
 276   }
 277   wxFAIL_MSG("wrong listbox index");
 278   return "";
 279 }
 280
 281 wxString wxListBox::GetStringSelection(void) const
 282 {
 283   GList *selection = m_list->selection;
 284   if (selection)
 285   {
 286     GtkBin *bin = GTK_BIN( selection->data );
 287     wxString tmp = GTK_LABEL( bin->child )->label;
 288     return tmp;
 289   }
 290   wxFAIL_MSG("no listbox selection available");
 291   return "";
 292 }
 293
 294 int wxListBox::Number(void)
 295 {
 296   GList *child = m_list->children;
 297   int count = 0;
 298   while (child) { count++; child = child->next; }
 299   return count;
 300 }
 301
 302 bool wxListBox::Selected( int n )
 303 {
 304   GList *target = g_list_nth( m_list->children, n );
 305   if (target)
 306   {
 307     GList *child = m_list->selection;
 308     while (child)
 309     {
 310       if (child->data == target->data) return TRUE;
 311       child = child->next;
 312     }
 313   }
 314   wxFAIL_MSG("wrong listbox index");
 315   return FALSE;
 316 }
 317
 318 void wxListBox::Set( int WXUNUSED(n), const wxString *WXUNUSED(choices) )
 319 {
 320   wxFAIL_MSG("wxListBox::Set not implemented");
 321 }
 322
 323 void wxListBox::SetClientData( int n, char *clientData )
 324 {
 325   wxNode *node = m_clientData.Nth( n );
 326   if (node)
 327   {
 328     node->SetData( (wxObject*)clientData );
 329   }
 330   else
 331   {
 332     wxFAIL_MSG("wrong listbox index");
 333   }
 334 }
 335
 336 void wxListBox::SetFirstItem( int WXUNUSED(n) )
 337 {
 338   wxFAIL_MSG("wxListBox::SetFirstItem not implemented");
 339 }
 340
 341 void wxListBox::SetFirstItem( const wxString &WXUNUSED(item) )
 342 {
 343   wxFAIL_MSG("wxListBox::SetFirstItem not implemented");
 344 }
 345
 346 void wxListBox::SetSelection( int n, bool select )
 347 {
 348   if (select)
 349     gtk_list_select_item( m_list, n );
 350   else
 351     gtk_list_unselect_item( m_list, n );
 352 }
 353
 354 void wxListBox::SetString( int n, const wxString &string )
 355 {
 356   GList *child = g_list_nth( m_list->children, n );
 357   if (child)
 358   {
 359     GtkBin *bin = GTK_BIN( child->data );
 360     GtkLabel *label = GTK_LABEL( bin->child );
 361     gtk_label_set( label, string );
 362   }
 363   else
 364   {
 365     wxFAIL_MSG("wrong listbox index");
 366   }
 367 }
 368
 369 void wxListBox::SetStringSelection( const wxString &string, bool select )
 370 {
 371   SetSelection( FindString(string), select );
 372 }
 373
 374 int wxListBox::GetIndex( GtkWidget *item ) const
 375 {
 376   if (item)
 377   {
 378     GList *child = m_list->children;
 379     int count = 0;
 380     while (child)
 381     {
 382       if (GTK_WIDGET(child->data) == item) return count;
 383       count++;
 384       child = child->next;
 385     }
 386   }
 387   return -1;
 388 }
 389
 390 void wxListBox::SetDropTarget( wxDropTarget *dropTarget )
 391 {
 392   GList *child = m_list->children;
 393   while (child)
 394   {
 395     DisconnectDnDWidget( GTK_WIDGET( child->data ) );
 396     child = child->next;
 397   }
 398
 399   wxWindow::SetDropTarget( dropTarget  );
 400
 401   child = m_list->children;
 402   while (child)
 403   {
 404     ConnectDnDWidget( GTK_WIDGET( child->data ) );
 405     child = child->next;
 406   }
 407 }
 408
 409 GtkWidget *wxListBox::GetConnectWidget(void)
 410 {
 411   return GTK_WIDGET(m_list);
 412 }
 413
 414 void wxListBox::SetFont( const wxFont &font )
 415 {
 416   wxWindow::SetFont( font );
 417
 418   GList *child = m_list->children;
 419   while (child)
 420   {
 421     GtkBin *bin = (GtkBin*) child->data;
 422     gtk_widget_set_style( bin->child,
 423       gtk_style_ref(
 424         gtk_widget_get_style( m_widget ) ) );
 425     child = child->next;
 426   }
 427 }
 428
 429