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