src/gtk1/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
  20 //-----------------------------------------------------------------------------
  21 // data
  22 //-----------------------------------------------------------------------------
  23
  24 extern bool   g_blockEventsOnDrag;
  25
  26 //-----------------------------------------------------------------------------
  27 // wxListBox
  28 //-----------------------------------------------------------------------------
  29
  30 static void gtk_listitem_select_callback( GtkWidget *WXUNUSED(widget), wxListBox *listbox )
  31 {
  32   if (!listbox->HasVMT()) return;
  33   if (g_blockEventsOnDrag) return;
  34
  35   wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
  36
  37     wxArrayInt aSelections;
  38     int count = listbox->GetSelections(aSelections);
  39     if ( count > 0 )
  40     {
  41       event.m_commandInt = aSelections[0] ;
  42       event.m_clientData = listbox->GetClientData(event.m_commandInt);
  43       wxString str(listbox->GetString(event.m_commandInt));
  44       if (str != "")
  45         event.m_commandString = copystring((char *)(const char *)str);
  46     }
  47     else
  48     {
  49       event.m_commandInt = -1 ;
  50       event.m_commandString = copystring("") ;
  51     }
  52
  53   event.SetEventObject( listbox );
  54   listbox->GetEventHandler()->ProcessEvent( event );
  55   if (event.m_commandString) delete[] event.m_commandString ;
  56 };
  57
  58 //-----------------------------------------------------------------------------
  59
  60 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
  61
  62 wxListBox::wxListBox(void)
  63 {
  64   m_list = NULL;
  65 };
  66
  67 wxListBox::wxListBox( wxWindow *parent, wxWindowID id,
  68       const wxPoint &pos, const wxSize &size,
  69       int n, const wxString choices[],
  70       long style, const wxString &name )
  71 {
  72   Create( parent, id, pos, size, n, choices, style, name );
  73 };
  74
  75 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
  76       const wxPoint &pos, const wxSize &size,
  77       int n, const wxString choices[],
  78       long style, const wxString &name )
  79 {
  80   m_needParent = TRUE;
  81
  82   PreCreation( parent, id, pos, size, style, name );
  83
  84   m_widget = gtk_scrolled_window_new( NULL, NULL );
  85   gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
  86     GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
  87
  88   m_list = GTK_LIST( gtk_list_new() );
  89
  90   // @@ what's the difference between BROWSE and SINGLE?
  91   GtkSelectionMode mode = GTK_SELECTION_BROWSE;
  92   if ( style & wxLB_MULTIPLE )
  93     mode = GTK_SELECTION_MULTIPLE;
  94   else if ( style & wxLB_EXTENDED )
  95     mode = GTK_SELECTION_EXTENDED;
  96
  97   gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
  98
  99   gtk_container_add (GTK_CONTAINER(m_widget), GTK_WIDGET(m_list) );
 100   gtk_widget_show( GTK_WIDGET(m_list) );
 101
 102   for (int i = 0; i < n; i++)
 103   {
 104     GtkWidget *list_item;
 105     list_item = gtk_list_item_new_with_label( choices[i] );
 106
 107     gtk_container_add( GTK_CONTAINER(m_list), list_item );
 108
 109     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 110       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 111
 112     if ( style & wxLB_MULTIPLE )
 113       gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 114         GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 115
 116     m_clientData.Append( (wxObject*)NULL );
 117
 118     gtk_widget_show( list_item );
 119   };
 120
 121   PostCreation();
 122
 123   gtk_widget_realize( GTK_WIDGET(m_list) );
 124
 125   Show( TRUE );
 126
 127   return TRUE;
 128 };
 129
 130 void wxListBox::Append( const wxString &item )
 131 {
 132   Append( item, (char*)NULL );
 133 };
 134
 135 void wxListBox::Append( const wxString &item, char *clientData )
 136 {
 137   GtkWidget *list_item;
 138   list_item = gtk_list_item_new_with_label( item );
 139
 140   gtk_signal_connect( GTK_OBJECT(list_item), "select",
 141     GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 142
 143   if ( GetWindowStyleFlag() & wxLB_MULTIPLE )
 144     gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 145       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 146
 147   gtk_container_add( GTK_CONTAINER(m_list), list_item );
 148
 149   m_clientData.Append( (wxObject*)clientData );
 150
 151   gtk_widget_show( list_item );
 152 };
 153
 154 void wxListBox::Clear(void)
 155 {
 156   gtk_list_clear_items( m_list, 0, Number() );
 157
 158   m_clientData.Clear();
 159 };
 160
 161 void wxListBox::Delete( int n )
 162 {
 163   gtk_list_clear_items( m_list, n, n );
 164
 165   wxNode *node = m_clientData.Nth( n );
 166   if (!node)
 167   {
 168     wxFAIL_MSG("wxListBox::Delete wrong index");
 169   }
 170   else
 171     m_clientData.DeleteNode( node );
 172 };
 173
 174 void wxListBox::Deselect( int n )
 175 {
 176   gtk_list_unselect_item( m_list, n );
 177 };
 178
 179 int wxListBox::FindString( const wxString &item ) const
 180 {
 181   GList *child = m_list->children;
 182   int count = 0;
 183   while (child)
 184   {
 185     GtkBin *bin = GTK_BIN( child->data );
 186     GtkLabel *label = GTK_LABEL( bin->child );
 187     if (item == label->label) return count;
 188     count++;
 189     child = child->next;
 190   };
 191   return -1;
 192 };
 193
 194 char *wxListBox::GetClientData( int n ) const
 195 {
 196   wxNode *node = m_clientData.Nth( n );
 197   if (node) return ((char*)node->Data());
 198   return NULL;
 199 };
 200
 201 int wxListBox::GetSelection(void) const
 202 {
 203   GList *selection = m_list->selection;
 204   if (selection)
 205   {
 206     GList *child = m_list->children;
 207     int count = 0;
 208     while (child)
 209     {
 210       if (child->data == selection->data) return count;
 211       count++;
 212       child = child->next;
 213     };
 214   };
 215   return -1;
 216 };
 217
 218 int wxListBox::GetSelections(wxArrayInt& aSelections) const
 219 {
 220   // get the number of selected items first
 221   GList *child = m_list->children;
 222   int count = 0;
 223   for ( child = m_list->children; child != NULL; child = child->next ) {
 224     if ( GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED )
 225       count++;
 226   }
 227
 228   aSelections.Empty();
 229
 230   if ( count > 0 ) {
 231     // now fill the list
 232     aSelections.Alloc(count); // optimization attempt
 233     int i = 0;
 234     for ( child = m_list->children; child != NULL; child = child->next, i++ ) {
 235       if ( GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED )
 236         aSelections.Add(i);
 237     }
 238   }
 239
 240   return count;
 241 };
 242
 243 wxString wxListBox::GetString( int n ) const
 244 {
 245   GList *child = g_list_nth( m_list->children, n );
 246   if (child)
 247   {
 248     GtkBin *bin = GTK_BIN( child->data );
 249     GtkLabel *label = GTK_LABEL( bin->child );
 250     return label->label;
 251   };
 252   return "";
 253 };
 254
 255 wxString wxListBox::GetStringSelection(void) const
 256 {
 257   GList *selection = m_list->selection;
 258   if (selection)
 259   {
 260     GtkBin *bin = GTK_BIN( selection->data );
 261     wxString tmp = GTK_LABEL( bin->child )->label;
 262     return tmp;
 263   };
 264   return "";
 265 };
 266
 267 int wxListBox::Number(void)
 268 {
 269   GList *child = m_list->children;
 270   int count = 0;
 271   while (child) { count++; child = child->next; };
 272   return count;
 273 };
 274
 275 bool wxListBox::Selected( int n )
 276 {
 277   GList *target = g_list_nth( m_list->children, n );
 278   if (target)
 279   {
 280     GList *child = m_list->selection;
 281     while (child)
 282     {
 283       if (child->data == target->data) return TRUE;
 284       child = child->next;
 285     };
 286   };
 287   return FALSE;
 288 };
 289
 290 void wxListBox::Set( int WXUNUSED(n), const wxString *WXUNUSED(choices) )
 291 {
 292 };
 293
 294 void wxListBox::SetClientData( int n, char *clientData )
 295 {
 296   wxNode *node = m_clientData.Nth( n );
 297   if (node) node->SetData( (wxObject*)clientData );
 298 };
 299
 300 void wxListBox::SetFirstItem( int WXUNUSED(n) )
 301 {
 302 };
 303
 304 void wxListBox::SetFirstItem( const wxString &WXUNUSED(item) )
 305 {
 306 };
 307
 308 void wxListBox::SetSelection( int n, bool select )
 309 {
 310   if (select)
 311     gtk_list_select_item( m_list, n );
 312   else
 313     gtk_list_unselect_item( m_list, n );
 314 };
 315
 316 void wxListBox::SetString( int n, const wxString &string )
 317 {
 318   GList *child = g_list_nth( m_list->children, n );
 319   if (child)
 320   {
 321     GtkBin *bin = GTK_BIN( child->data );
 322     GtkLabel *label = GTK_LABEL( bin->child );
 323     gtk_label_set( label, string );
 324   };
 325 };
 326
 327 void wxListBox::SetStringSelection( const wxString &string, bool select )
 328 {
 329   SetSelection( FindString(string), select );
 330 };
 331
 332 int wxListBox::GetIndex( GtkWidget *item ) const
 333 {
 334   if (item)
 335   {
 336     GList *child = m_list->children;
 337     int count = 0;
 338     while (child)
 339     {
 340       if (GTK_WIDGET(child->data) == item) return count;
 341       count++;
 342       child = child->next;
 343     };
 344   };
 345   return -1;
 346 };
 347
 348 GtkWidget *wxListBox::GetDropTargetWidget(void)
 349 {
 350   return GTK_WIDGET(m_list);
 351 };
 352
 353
 354