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