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     gtk_widget_show( list_item );
  96   };
  97
  98   PostCreation();
  99
 100   Show( TRUE );
 101
 102   return TRUE;
 103 };
 104
 105 void wxListBox::Append( const wxString &item )
 106 {
 107   GtkWidget *list_item;
 108   list_item = gtk_list_item_new_with_label( item );
 109
 110  gtk_signal_connect( GTK_OBJECT(list_item), "select",
 111     GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 112
 113   gtk_container_add( GTK_CONTAINER(m_list), list_item );
 114
 115   gtk_widget_show( list_item );
 116 };
 117
 118 void wxListBox::Append( const wxString &WXUNUSED(item), char *WXUNUSED(clientData) )
 119 {
 120   wxFAIL_MSG("wxListBox::Append(clientdata) not implemented");
 121 };
 122
 123 void wxListBox::Clear(void)
 124 {
 125   gtk_list_clear_items( m_list, 0, Number() );
 126 };
 127
 128 void wxListBox::Delete( int n )
 129 {
 130   gtk_list_clear_items( m_list, n, n );
 131 };
 132
 133 void wxListBox::Deselect( int n )
 134 {
 135   gtk_list_unselect_item( m_list, n );
 136 };
 137
 138 int wxListBox::FindString( const wxString &item ) const
 139 {
 140   GList *child = m_list->children;
 141   int count = 0;
 142   while (child)
 143   {
 144     GtkBin *bin = GTK_BIN( child->data );
 145     GtkLabel *label = GTK_LABEL( bin->child );
 146     if (item == label->label) return count;
 147     count++;
 148     child = child->next;
 149   };
 150   return -1;
 151 };
 152
 153 char *wxListBox::GetClientData( int WXUNUSED(n) ) const
 154 {
 155   wxFAIL_MSG("wxListBox::GetClientData not implemented");
 156
 157   return NULL;
 158 };
 159
 160 int wxListBox::GetSelection(void) const
 161 {
 162   GList *selection = m_list->selection;
 163   if (selection)
 164   {
 165     GList *child = m_list->children;
 166     int count = 0;
 167     while (child)
 168     {
 169       if (child->data == selection->data) return count;
 170       count++;
 171       child = child->next;
 172     };
 173   };
 174   return -1;
 175 };
 176
 177 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 178 {
 179   // get the number of selected items first
 180   GList *child = m_list->children;
 181   int count = 0;
 182   for ( child = m_list->children; child != NULL; child = child->next ) {
 183     if ( GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED )
 184       count++;
 185   }
 186
 187   aSelections.Empty();
 188
 189   if ( count > 0 ) {
 190     // now fill the list
 191     aSelections.Alloc(count); // optimization attempt
 192     int i = 0;
 193     for ( child = m_list->children; child != NULL; child = child->next, i++ ) {
 194       if ( GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED )
 195         aSelections.Add(i);
 196     }
 197   }
 198
 199   return count;
 200 };
 201
 202 wxString wxListBox::GetString( int n ) const
 203 {
 204   GList *child = g_list_nth( m_list->children, n );
 205   if (child)
 206   {
 207     GtkBin *bin = GTK_BIN( child->data );
 208     GtkLabel *label = GTK_LABEL( bin->child );
 209     return label->label;
 210   };
 211   return "";
 212 };
 213
 214 wxString wxListBox::GetStringSelection(void) const
 215 {
 216   GList *selection = m_list->selection;
 217   if (selection)
 218   {
 219     GtkBin *bin = GTK_BIN( selection->data );
 220     wxString tmp = GTK_LABEL( bin->child )->label;
 221     return tmp;
 222   };
 223   return "";
 224 };
 225
 226 int wxListBox::Number(void)
 227 {
 228   GList *child = m_list->children;
 229   int count = 0;
 230   while (child) { count++; child = child->next; };
 231   return count;
 232 };
 233
 234 bool wxListBox::Selected( int n )
 235 {
 236   GList *target = g_list_nth( m_list->children, n );
 237   if (target)
 238   {
 239     GList *child = m_list->selection;
 240     while (child)
 241     {
 242       if (child->data == target->data) return TRUE;
 243       child = child->next;
 244     };
 245   };
 246   return FALSE;
 247 };
 248
 249 void wxListBox::Set( int WXUNUSED(n), const wxString *WXUNUSED(choices) )
 250 {
 251 };
 252
 253 void wxListBox::SetClientData( int WXUNUSED(n), char *WXUNUSED(clientData) )
 254 {
 255 };
 256
 257 void wxListBox::SetFirstItem( int WXUNUSED(n) )
 258 {
 259 };
 260
 261 void wxListBox::SetFirstItem( const wxString &WXUNUSED(item) )
 262 {
 263 };
 264
 265 void wxListBox::SetSelection( int n, bool select )
 266 {
 267   if (select)
 268     gtk_list_select_item( m_list, n );
 269   else
 270     gtk_list_unselect_item( m_list, n );
 271 };
 272
 273 void wxListBox::SetString( int WXUNUSED(n), const wxString &WXUNUSED(string) )
 274 {
 275 };
 276
 277 void wxListBox::SetStringSelection( const wxString &string, bool select )
 278 {
 279   SetSelection( FindString(string), select );
 280 };
 281
 282 int wxListBox::GetIndex( GtkWidget *item ) const
 283 {
 284   if (item)
 285   {
 286     GList *child = m_list->children;
 287     int count = 0;
 288     while (child)
 289     {
 290       if (GTK_WIDGET(child->data) == item) return count;
 291       count++;
 292       child = child->next;
 293     };
 294   };
 295   return -1;
 296 };
 297
 298