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
 138     Show( TRUE );
 139
 140     return TRUE;
 141 }
 142
 143 wxComboBox::~wxComboBox()
 144 {
 145     wxNode *node = m_clientDataList.First();
 146     while (node)
 147     {
 148         wxClientData *cd = (wxClientData*)node->Data();
 149         if (cd) delete cd;
 150         node = node->Next();
 151     }
 152     m_clientDataList.Clear();
 153 }
 154
 155 void wxComboBox::AppendCommon( const wxString &item )
 156 {
 157     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 158
 159     GtkWidget *list = GTK_COMBO(m_widget)->list;
 160
 161     GtkWidget *list_item = gtk_list_item_new_with_label( item );
 162
 163     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 164       GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
 165
 166     gtk_container_add( GTK_CONTAINER(list), list_item );
 167
 168     if (m_widgetStyle) ApplyWidgetStyle();
 169
 170     gtk_widget_show( list_item );
 171 }
 172
 173 void wxComboBox::Append( const wxString &item )
 174 {
 175     m_clientDataList.Append( (wxObject*) NULL );
 176     m_clientObjectList.Append( (wxObject*) NULL );
 177
 178     AppendCommon( item );
 179 }
 180
 181 void wxComboBox::Append( const wxString &item, void *clientData )
 182 {
 183     m_clientDataList.Append( (wxObject*) clientData );
 184     m_clientObjectList.Append( (wxObject*)NULL );
 185
 186     AppendCommon( item );
 187 }
 188
 189 void wxComboBox::Append( const wxString &item, wxClientData *clientData )
 190 {
 191     m_clientDataList.Append( (wxObject*) NULL );
 192     m_clientObjectList.Append( (wxObject*) clientData );
 193
 194     AppendCommon( item );
 195 }
 196
 197 void wxComboBox::SetClientData( int n, void* clientData )
 198 {
 199     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 200
 201     wxNode *node = m_clientDataList.Nth( n );
 202     if (!node) return;
 203
 204     node->SetData( (wxObject*) clientData );
 205 }
 206
 207 void* wxComboBox::GetClientData( int n )
 208 {
 209     wxCHECK_MSG( m_widget != NULL, NULL, "invalid combobox" );
 210
 211     wxNode *node = m_clientDataList.Nth( n );
 212     if (!node) return NULL;
 213
 214     return node->Data();
 215 }
 216
 217 void wxComboBox::SetClientObject( int n, wxClientData* clientData )
 218 {
 219     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 220
 221     wxNode *node = m_clientObjectList.Nth( n );
 222     if (!node) return;
 223
 224     wxClientData *cd = (wxClientData*) node->Data();
 225     if (cd) delete cd;
 226
 227     node->SetData( (wxObject*) clientData );
 228 }
 229
 230 wxClientData* wxComboBox::GetClientObject( int n )
 231 {
 232     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, "invalid combobox" );
 233
 234     wxNode *node = m_clientDataList.Nth( n );
 235     if (!node) return (wxClientData*) NULL;
 236
 237     return (wxClientData*) node->Data();
 238 }
 239
 240 void wxComboBox::Clear()
 241 {
 242     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 243
 244     GtkWidget *list = GTK_COMBO(m_widget)->list;
 245     gtk_list_clear_items( GTK_LIST(list), 0, Number() );
 246
 247     wxNode *node = m_clientObjectList.First();
 248     while (node)
 249     {
 250         wxClientData *cd = (wxClientData*)node->Data();
 251         if (cd) delete cd;
 252         node = node->Next();
 253     }
 254     m_clientObjectList.Clear();
 255
 256     m_clientDataList.Clear();
 257 }
 258
 259 void wxComboBox::Delete( int n )
 260 {
 261     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 262
 263     GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 264
 265     GList *child = g_list_nth( listbox->children, n );
 266
 267     if (!child)
 268     {
 269         wxFAIL_MSG("wrong index");
 270         return;
 271     }
 272
 273     GList *list = g_list_append( (GList*) NULL, child->data );
 274     gtk_list_remove_items( listbox, list );
 275     g_list_free( list );
 276
 277     wxNode *node = m_clientObjectList.Nth( n );
 278     if (node)
 279     {
 280         wxClientData *cd = (wxClientData*)node->Data();
 281         if (cd) delete cd;
 282         m_clientObjectList.DeleteNode( node );
 283     }
 284
 285     node = m_clientDataList.Nth( n );
 286     if (node)
 287     {
 288         m_clientDataList.DeleteNode( node );
 289     }
 290 }
 291
 292 int wxComboBox::FindString( const wxString &item )
 293 {
 294     wxCHECK_MSG( m_widget != NULL, -1, "invalid combobox" );
 295
 296     GtkWidget *list = GTK_COMBO(m_widget)->list;
 297
 298     GList *child = GTK_LIST(list)->children;
 299     int count = 0;
 300     while (child)
 301     {
 302         GtkBin *bin = GTK_BIN( child->data );
 303         GtkLabel *label = GTK_LABEL( bin->child );
 304         if (item == label->label) return count;
 305         count++;
 306         child = child->next;
 307     }
 308
 309     wxFAIL_MSG( "wxComboBox: string not found" );
 310
 311     return -1;
 312 }
 313
 314 int wxComboBox::GetSelection() const
 315 {
 316     wxCHECK_MSG( m_widget != NULL, -1, "invalid combobox" );
 317
 318     GtkWidget *list = GTK_COMBO(m_widget)->list;
 319
 320     GList *selection = GTK_LIST(list)->selection;
 321     if (selection)
 322     {
 323         GList *child = GTK_LIST(list)->children;
 324         int count = 0;
 325         while (child)
 326         {
 327             if (child->data == selection->data) return count;
 328             count++;
 329             child = child->next;
 330         }
 331     }
 332
 333     wxFAIL_MSG( "wxComboBox: no selection" );
 334
 335     return -1;
 336 }
 337
 338 wxString wxComboBox::GetString( int n ) const
 339 {
 340     wxCHECK_MSG( m_widget != NULL, "", "invalid combobox" );
 341
 342     GtkWidget *list = GTK_COMBO(m_widget)->list;
 343
 344     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 345     if (child)
 346     {
 347         GtkBin *bin = GTK_BIN( child->data );
 348         GtkLabel *label = GTK_LABEL( bin->child );
 349         return label->label;
 350     }
 351
 352     wxFAIL_MSG( "wxComboBox: wrong index" );
 353
 354     return "";
 355 }
 356
 357 wxString wxComboBox::GetStringSelection() const
 358 {
 359     wxCHECK_MSG( m_widget != NULL, "", "invalid combobox" );
 360
 361     GtkWidget *list = GTK_COMBO(m_widget)->list;
 362
 363     GList *selection = GTK_LIST(list)->selection;
 364     if (selection)
 365     {
 366         GtkBin *bin = GTK_BIN( selection->data );
 367         wxString tmp = GTK_LABEL( bin->child )->label;
 368         return tmp;
 369     }
 370
 371     wxFAIL_MSG( "wxComboBox: no selection" );
 372
 373     return "";
 374 }
 375
 376 int wxComboBox::Number() const
 377 {
 378     wxCHECK_MSG( m_widget != NULL, 0, "invalid combobox" );
 379
 380     GtkWidget *list = GTK_COMBO(m_widget)->list;
 381
 382     GList *child = GTK_LIST(list)->children;
 383     int count = 0;
 384     while (child) { count++; child = child->next; }
 385     return count;
 386 }
 387
 388 void wxComboBox::SetSelection( int n )
 389 {
 390     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 391
 392     GtkWidget *list = GTK_COMBO(m_widget)->list;
 393     gtk_list_select_item( GTK_LIST(list), n );
 394 }
 395
 396 void wxComboBox::SetStringSelection( const wxString &string )
 397 {
 398     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 399
 400     int res = FindString( string );
 401     if (res == -1) return;
 402     SetSelection( res );
 403 }
 404
 405 wxString wxComboBox::GetValue() const
 406 {
 407     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 408     wxString tmp = gtk_entry_get_text( GTK_ENTRY(entry) );
 409     return tmp;
 410 }
 411
 412 void wxComboBox::SetValue( const wxString& value )
 413 {
 414     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 415
 416     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 417     wxString tmp = "";
 418     if (!value.IsNull()) tmp = value;
 419     gtk_entry_set_text( GTK_ENTRY(entry), tmp );
 420 }
 421
 422 void wxComboBox::Copy()
 423 {
 424     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 425
 426     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 427 #if (GTK_MINOR_VERSION == 1)
 428     gtk_editable_copy_clipboard( GTK_EDITABLE(entry) );
 429 #else
 430     gtk_editable_copy_clipboard( GTK_EDITABLE(entry), 0 );
 431 #endif
 432 }
 433
 434 void wxComboBox::Cut()
 435 {
 436     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 437
 438     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 439 #if (GTK_MINOR_VERSION == 1)
 440     gtk_editable_cut_clipboard( GTK_EDITABLE(entry) );
 441 #else
 442     gtk_editable_cut_clipboard( GTK_EDITABLE(entry), 0 );
 443 #endif
 444 }
 445
 446 void wxComboBox::Paste()
 447 {
 448     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 449
 450     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 451 #if (GTK_MINOR_VERSION == 1)
 452     gtk_editable_paste_clipboard( GTK_EDITABLE(entry) );
 453 #else
 454     gtk_editable_paste_clipboard( GTK_EDITABLE(entry), 0 );
 455 #endif
 456 }
 457
 458 void wxComboBox::SetInsertionPoint( long pos )
 459 {
 460     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 461
 462     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 463     gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
 464 }
 465
 466 void wxComboBox::SetInsertionPointEnd()
 467 {
 468     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 469
 470     SetInsertionPoint( -1 );
 471 }
 472
 473 long wxComboBox::GetInsertionPoint() const
 474 {
 475     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 476     return (long) GTK_EDITABLE(entry)->current_pos;
 477 }
 478
 479 long wxComboBox::GetLastPosition() const
 480 {
 481     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 482     int pos = GTK_ENTRY(entry)->text_length;
 483     return (long) pos-1;
 484 }
 485
 486 void wxComboBox::Replace( long from, long to, const wxString& value )
 487 {
 488     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 489
 490     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 491     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 492     if (value.IsNull()) return;
 493     gint pos = (gint)to;
 494     gtk_editable_insert_text( GTK_EDITABLE(entry), value, value.Length(), &pos );
 495 }
 496
 497 void wxComboBox::Remove(long from, long to)
 498 {
 499     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 500
 501     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 502     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 503 }
 504
 505 void wxComboBox::SetSelection( long WXUNUSED(from), long WXUNUSED(to) )
 506 {
 507     wxFAIL_MSG( "wxComboBox::SetSelection not implemented" );
 508 }
 509
 510 void wxComboBox::SetEditable( bool WXUNUSED(editable) )
 511 {
 512     wxFAIL_MSG( "wxComboBox::SetEditable not implemented" );
 513 }
 514
 515 void wxComboBox::OnSize( wxSizeEvent &event )
 516 {
 517     wxControl::OnSize( event );
 518
 519     int w = 21;
 520     gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
 521
 522     gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
 523     gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
 524 }
 525
 526 void wxComboBox::ApplyWidgetStyle()
 527 {
 528     SetWidgetStyle();
 529
 530     gtk_widget_set_style( GTK_COMBO(m_widget)->button, m_widgetStyle );
 531     gtk_widget_set_style( GTK_COMBO(m_widget)->entry, m_widgetStyle );
 532     gtk_widget_set_style( GTK_COMBO(m_widget)->list, m_widgetStyle );
 533
 534     GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
 535     GList *child = list->children;
 536     while (child)
 537     {
 538         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 539
 540         GtkBin *bin = GTK_BIN(child->data);
 541         gtk_widget_set_style( bin->child, m_widgetStyle );
 542
 543         child = child->next;
 544     }
 545 }
 546
 547 GtkWidget* wxComboBox::GetConnectWidget()
 548 {
 549     return GTK_COMBO(m_widget)->entry;
 550 }
 551
 552 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
 553 {
 554     return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
 555              (window == GTK_COMBO(m_widget)->button->window ) );
 556 }
 557