src/gtk/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        combobox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "combobox.h"
  12 #endif
  13
  14
  15 #include "wx/combobox.h"
  16
  17 #include <wx/intl.h>
  18
  19 #include "gdk/gdk.h"
  20 #include "gtk/gtk.h"
  21
  22 //-----------------------------------------------------------------------------
  23 // data
  24 //-----------------------------------------------------------------------------
  25
  26 extern bool   g_blockEventsOnDrag;
  27
  28 //-----------------------------------------------------------------------------
  29 // "select"
  30 //-----------------------------------------------------------------------------
  31
  32 static void gtk_combo_clicked_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  33 {
  34     if (!combo->HasVMT()) return;
  35     if (g_blockEventsOnDrag) return;
  36
  37     if (combo->m_alreadySent)
  38     {
  39         combo->m_alreadySent = FALSE;
  40         return;
  41     }
  42
  43     combo->m_alreadySent = TRUE;
  44
  45     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId());
  46     event.SetInt( combo->GetSelection() );
  47     wxString tmp( combo->GetStringSelection() );
  48     event.SetString( WXSTRINGCAST(tmp) );
  49     event.SetEventObject(combo);
  50     combo->GetEventHandler()->ProcessEvent(event);
  51 }
  52
  53 //-----------------------------------------------------------------------------
  54 //  "changed"
  55 //-----------------------------------------------------------------------------
  56
  57 static void
  58 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  59 {
  60     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->m_windowId );
  61     event.SetString( copystring(combo->GetValue()) );
  62     event.SetEventObject( combo );
  63     combo->GetEventHandler()->ProcessEvent( event );
  64     delete[] event.GetString();
  65 }
  66
  67 //-----------------------------------------------------------------------------
  68 // wxComboBox
  69 //-----------------------------------------------------------------------------
  70
  71 IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
  72
  73 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
  74     EVT_SIZE(wxComboBox::OnSize)
  75 END_EVENT_TABLE()
  76
  77 bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
  78                          const wxPoint& pos, const wxSize& size,
  79                          int n, const wxString choices[],
  80                          long style, const wxValidator& validator,
  81                          const wxString& name )
  82 {
  83     m_alreadySent = FALSE;
  84     m_needParent = TRUE;
  85     m_acceptsFocus = TRUE;
  86
  87     PreCreation( parent, id, pos, size, style, name );
  88
  89     SetValidator( validator );
  90
  91     m_widget = gtk_combo_new();
  92
  93     wxSize newSize = size;
  94     if (newSize.x == -1) newSize.x = 100;
  95     if (newSize.y == -1) newSize.y = 26;
  96     SetSize( newSize.x, newSize.y );
  97
  98     GtkWidget *list = GTK_COMBO(m_widget)->list;
  99
 100     for (int i = 0; i < n; i++)
 101     {
 102         GtkWidget *list_item = gtk_list_item_new_with_label( choices[i] );
 103
 104         m_clientDataList.Append( (wxObject*)NULL );
 105         m_clientObjectList.Append( (wxObject*)NULL );
 106
 107         gtk_container_add( GTK_CONTAINER(list), list_item );
 108
 109         gtk_widget_realize( list_item );
 110         gtk_widget_realize( GTK_BIN(list_item)->child );
 111
 112         gtk_widget_show( list_item );
 113
 114         gtk_signal_connect( GTK_OBJECT(list_item), "select",
 115         GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
 116     }
 117
 118     m_parent->AddChild( this );
 119
 120     (m_parent->m_insertCallback)( m_parent, this );
 121
 122     PostCreation();
 123
 124     ConnectWidget( GTK_COMBO(m_widget)->button );
 125
 126     if (!value.IsNull()) SetValue( value );
 127
 128     gtk_widget_realize( GTK_COMBO(m_widget)->list );
 129     gtk_widget_realize( GTK_COMBO(m_widget)->entry );
 130     gtk_widget_realize( GTK_COMBO(m_widget)->button );
 131
 132     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
 133       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 134
 135     SetBackgroundColour( parent->GetBackgroundColour() );
 136     SetForegroundColour( parent->GetForegroundColour() );
 137     SetFont( parent->GetFont() );
 138
 139     Show( TRUE );
 140
 141     return TRUE;
 142 }
 143
 144 wxComboBox::~wxComboBox()
 145 {
 146     wxNode *node = m_clientDataList.First();
 147     while (node)
 148     {
 149         wxClientData *cd = (wxClientData*)node->Data();
 150         if (cd) delete cd;
 151         node = node->Next();
 152     }
 153     m_clientDataList.Clear();
 154 }
 155
 156 void wxComboBox::AppendCommon( const wxString &item )
 157 {
 158     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 159
 160     GtkWidget *list = GTK_COMBO(m_widget)->list;
 161
 162     GtkWidget *list_item = gtk_list_item_new_with_label( item );
 163
 164     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 165       GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
 166
 167     gtk_container_add( GTK_CONTAINER(list), list_item );
 168
 169     if (m_widgetStyle) ApplyWidgetStyle();
 170
 171     gtk_widget_show( list_item );
 172 }
 173
 174 void wxComboBox::Append( const wxString &item )
 175 {
 176     m_clientDataList.Append( (wxObject*) NULL );
 177     m_clientObjectList.Append( (wxObject*) NULL );
 178
 179     AppendCommon( item );
 180 }
 181
 182 void wxComboBox::Append( const wxString &item, void *clientData )
 183 {
 184     m_clientDataList.Append( (wxObject*) clientData );
 185     m_clientObjectList.Append( (wxObject*)NULL );
 186
 187     AppendCommon( item );
 188 }
 189
 190 void wxComboBox::Append( const wxString &item, wxClientData *clientData )
 191 {
 192     m_clientDataList.Append( (wxObject*) NULL );
 193     m_clientObjectList.Append( (wxObject*) clientData );
 194
 195     AppendCommon( item );
 196 }
 197
 198 void wxComboBox::SetClientData( int n, void* clientData )
 199 {
 200     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 201
 202     wxNode *node = m_clientDataList.Nth( n );
 203     if (!node) return;
 204
 205     node->SetData( (wxObject*) clientData );
 206 }
 207
 208 void* wxComboBox::GetClientData( int n )
 209 {
 210     wxCHECK_MSG( m_widget != NULL, NULL, "invalid combobox" );
 211
 212     wxNode *node = m_clientDataList.Nth( n );
 213     if (!node) return NULL;
 214
 215     return node->Data();
 216 }
 217
 218 void wxComboBox::SetClientObject( int n, wxClientData* clientData )
 219 {
 220     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 221
 222     wxNode *node = m_clientObjectList.Nth( n );
 223     if (!node) return;
 224
 225     wxClientData *cd = (wxClientData*) node->Data();
 226     if (cd) delete cd;
 227
 228     node->SetData( (wxObject*) clientData );
 229 }
 230
 231 wxClientData* wxComboBox::GetClientObject( int n )
 232 {
 233     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, "invalid combobox" );
 234
 235     wxNode *node = m_clientDataList.Nth( n );
 236     if (!node) return (wxClientData*) NULL;
 237
 238     return (wxClientData*) node->Data();
 239 }
 240
 241 void wxComboBox::Clear()
 242 {
 243     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 244
 245     GtkWidget *list = GTK_COMBO(m_widget)->list;
 246     gtk_list_clear_items( GTK_LIST(list), 0, Number() );
 247
 248     wxNode *node = m_clientObjectList.First();
 249     while (node)
 250     {
 251         wxClientData *cd = (wxClientData*)node->Data();
 252         if (cd) delete cd;
 253         node = node->Next();
 254     }
 255     m_clientObjectList.Clear();
 256
 257     m_clientDataList.Clear();
 258 }
 259
 260 void wxComboBox::Delete( int n )
 261 {
 262     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 263
 264     GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 265
 266     GList *child = g_list_nth( listbox->children, n );
 267
 268     if (!child)
 269     {
 270         wxFAIL_MSG("wrong index");
 271         return;
 272     }
 273
 274     GList *list = g_list_append( (GList*) NULL, child->data );
 275     gtk_list_remove_items( listbox, list );
 276     g_list_free( list );
 277
 278     wxNode *node = m_clientObjectList.Nth( n );
 279     if (node)
 280     {
 281         wxClientData *cd = (wxClientData*)node->Data();
 282         if (cd) delete cd;
 283         m_clientObjectList.DeleteNode( node );
 284     }
 285
 286     node = m_clientDataList.Nth( n );
 287     if (node)
 288     {
 289         m_clientDataList.DeleteNode( node );
 290     }
 291 }
 292
 293 int wxComboBox::FindString( const wxString &item )
 294 {
 295     wxCHECK_MSG( m_widget != NULL, -1, "invalid combobox" );
 296
 297     GtkWidget *list = GTK_COMBO(m_widget)->list;
 298
 299     GList *child = GTK_LIST(list)->children;
 300     int count = 0;
 301     while (child)
 302     {
 303         GtkBin *bin = GTK_BIN( child->data );
 304         GtkLabel *label = GTK_LABEL( bin->child );
 305         if (item == label->label) return count;
 306         count++;
 307         child = child->next;
 308     }
 309
 310     wxFAIL_MSG( "wxComboBox: string not found" );
 311
 312     return -1;
 313 }
 314
 315 int wxComboBox::GetSelection() const
 316 {
 317     wxCHECK_MSG( m_widget != NULL, -1, "invalid combobox" );
 318
 319     GtkWidget *list = GTK_COMBO(m_widget)->list;
 320
 321     GList *selection = GTK_LIST(list)->selection;
 322     if (selection)
 323     {
 324         GList *child = GTK_LIST(list)->children;
 325         int count = 0;
 326         while (child)
 327         {
 328             if (child->data == selection->data) return count;
 329             count++;
 330             child = child->next;
 331         }
 332     }
 333
 334     wxFAIL_MSG( "wxComboBox: no selection" );
 335
 336     return -1;
 337 }
 338
 339 wxString wxComboBox::GetString( int n ) const
 340 {
 341     wxCHECK_MSG( m_widget != NULL, "", "invalid combobox" );
 342
 343     GtkWidget *list = GTK_COMBO(m_widget)->list;
 344
 345     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 346     if (child)
 347     {
 348         GtkBin *bin = GTK_BIN( child->data );
 349         GtkLabel *label = GTK_LABEL( bin->child );
 350         return label->label;
 351     }
 352
 353     wxFAIL_MSG( "wxComboBox: wrong index" );
 354
 355     return "";
 356 }
 357
 358 wxString wxComboBox::GetStringSelection() const
 359 {
 360     wxCHECK_MSG( m_widget != NULL, "", "invalid combobox" );
 361
 362     GtkWidget *list = GTK_COMBO(m_widget)->list;
 363
 364     GList *selection = GTK_LIST(list)->selection;
 365     if (selection)
 366     {
 367         GtkBin *bin = GTK_BIN( selection->data );
 368         wxString tmp = GTK_LABEL( bin->child )->label;
 369         return tmp;
 370     }
 371
 372     wxFAIL_MSG( "wxComboBox: no selection" );
 373
 374     return "";
 375 }
 376
 377 int wxComboBox::Number() const
 378 {
 379     wxCHECK_MSG( m_widget != NULL, 0, "invalid combobox" );
 380
 381     GtkWidget *list = GTK_COMBO(m_widget)->list;
 382
 383     GList *child = GTK_LIST(list)->children;
 384     int count = 0;
 385     while (child) { count++; child = child->next; }
 386     return count;
 387 }
 388
 389 void wxComboBox::SetSelection( int n )
 390 {
 391     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 392
 393     GtkWidget *list = GTK_COMBO(m_widget)->list;
 394     gtk_list_select_item( GTK_LIST(list), n );
 395 }
 396
 397 void wxComboBox::SetStringSelection( const wxString &string )
 398 {
 399     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 400
 401     int res = FindString( string );
 402     if (res == -1) return;
 403     SetSelection( res );
 404 }
 405
 406 wxString wxComboBox::GetValue() const
 407 {
 408     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 409     wxString tmp = gtk_entry_get_text( GTK_ENTRY(entry) );
 410     return tmp;
 411 }
 412
 413 void wxComboBox::SetValue( const wxString& value )
 414 {
 415     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 416
 417     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 418     wxString tmp = "";
 419     if (!value.IsNull()) tmp = value;
 420     gtk_entry_set_text( GTK_ENTRY(entry), tmp );
 421 }
 422
 423 void wxComboBox::Copy()
 424 {
 425     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 426
 427     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 428 #if (GTK_MINOR_VERSION == 1)
 429     gtk_editable_copy_clipboard( GTK_EDITABLE(entry) );
 430 #else
 431     gtk_editable_copy_clipboard( GTK_EDITABLE(entry), 0 );
 432 #endif
 433 }
 434
 435 void wxComboBox::Cut()
 436 {
 437     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 438
 439     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 440 #if (GTK_MINOR_VERSION == 1)
 441     gtk_editable_cut_clipboard( GTK_EDITABLE(entry) );
 442 #else
 443     gtk_editable_cut_clipboard( GTK_EDITABLE(entry), 0 );
 444 #endif
 445 }
 446
 447 void wxComboBox::Paste()
 448 {
 449     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 450
 451     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 452 #if (GTK_MINOR_VERSION == 1)
 453     gtk_editable_paste_clipboard( GTK_EDITABLE(entry) );
 454 #else
 455     gtk_editable_paste_clipboard( GTK_EDITABLE(entry), 0 );
 456 #endif
 457 }
 458
 459 void wxComboBox::SetInsertionPoint( long pos )
 460 {
 461     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 462
 463     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 464     gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
 465 }
 466
 467 void wxComboBox::SetInsertionPointEnd()
 468 {
 469     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 470
 471     SetInsertionPoint( -1 );
 472 }
 473
 474 long wxComboBox::GetInsertionPoint() const
 475 {
 476     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 477     return (long) GTK_EDITABLE(entry)->current_pos;
 478 }
 479
 480 long wxComboBox::GetLastPosition() const
 481 {
 482     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 483     int pos = GTK_ENTRY(entry)->text_length;
 484     return (long) pos-1;
 485 }
 486
 487 void wxComboBox::Replace( long from, long to, const wxString& value )
 488 {
 489     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 490
 491     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 492     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 493     if (value.IsNull()) return;
 494     gint pos = (gint)to;
 495     gtk_editable_insert_text( GTK_EDITABLE(entry), value, value.Length(), &pos );
 496 }
 497
 498 void wxComboBox::Remove(long from, long to)
 499 {
 500     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 501
 502     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 503     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 504 }
 505
 506 void wxComboBox::SetSelection( long from, long to )
 507 {
 508     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 509     gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
 510 }
 511
 512 void wxComboBox::SetEditable( bool editable )
 513 {
 514     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 515     gtk_entry_set_editable( GTK_ENTRY(entry), editable );
 516 }
 517
 518 void wxComboBox::OnSize( wxSizeEvent &event )
 519 {
 520     wxControl::OnSize( event );
 521
 522     int w = 21;
 523     gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
 524
 525     gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
 526     gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
 527 }
 528
 529 void wxComboBox::ApplyWidgetStyle()
 530 {
 531     SetWidgetStyle();
 532
 533     gtk_widget_set_style( GTK_COMBO(m_widget)->button, m_widgetStyle );
 534     gtk_widget_set_style( GTK_COMBO(m_widget)->entry, m_widgetStyle );
 535     gtk_widget_set_style( GTK_COMBO(m_widget)->list, m_widgetStyle );
 536
 537     GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
 538     GList *child = list->children;
 539     while (child)
 540     {
 541         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 542
 543         GtkBin *bin = GTK_BIN(child->data);
 544         gtk_widget_set_style( bin->child, m_widgetStyle );
 545
 546         child = child->next;
 547     }
 548 }
 549
 550 GtkWidget* wxComboBox::GetConnectWidget()
 551 {
 552     return GTK_COMBO(m_widget)->entry;
 553 }
 554
 555 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
 556 {
 557     return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
 558              (window == GTK_COMBO(m_widget)->button->window ) );
 559 }
 560