src/univ/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        univ/combobox.cpp
   3 // Purpose:     wxComboControl and wxComboBox implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     15.12.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "univcombobox.h"
  22 #endif
  23
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #if wxUSE_COMBOBOX
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/log.h"
  34
  35     #include "wx/button.h"
  36     #include "wx/combobox.h"
  37     #include "wx/listbox.h"
  38     #include "wx/textctrl.h"
  39     #include "wx/bmpbuttn.h"
  40
  41     #include "wx/validate.h"
  42 #endif
  43
  44 #include "wx/tooltip.h"
  45 #include "wx/popupwin.h"
  46
  47 #include "wx/univ/renderer.h"
  48 #include "wx/univ/inphand.h"
  49 #include "wx/univ/theme.h"
  50
  51 /*
  52    The keyboard event flow:
  53
  54    1. they always come to the text ctrl
  55    2. it forwards the ones it doesn't process to the wxComboControl
  56    3. which passes them to the popup window if it is popped up
  57  */
  58
  59 // constants
  60 // ----------------------------------------------------------------------------
  61
  62 // the margin between the text control and the combo button
  63 static const wxCoord g_comboMargin = 2;
  64
  65 // ----------------------------------------------------------------------------
  66 // wxComboButton is just a normal button except that it sends commands to the
  67 // combobox and not its parent
  68 // ----------------------------------------------------------------------------
  69
  70 class wxComboButton : public wxBitmapButton
  71 {
  72 public:
  73     wxComboButton(wxComboControl *combo)
  74         : wxBitmapButton(combo->GetParent(), wxID_ANY, wxNullBitmap,
  75                          wxDefaultPosition, wxDefaultSize,
  76                          wxBORDER_NONE | wxBU_EXACTFIT)
  77     {
  78         m_combo = combo;
  79
  80         wxBitmap bmpNormal, bmpFocus, bmpPressed, bmpDisabled;
  81
  82         GetRenderer()->GetComboBitmaps(&bmpNormal,
  83                                        &bmpFocus,
  84                                        &bmpPressed,
  85                                        &bmpDisabled);
  86
  87         SetBitmapLabel(bmpNormal);
  88         SetBitmapFocus(bmpFocus.Ok() ? bmpFocus : bmpNormal);
  89         SetBitmapSelected(bmpPressed.Ok() ? bmpPressed : bmpNormal);
  90         SetBitmapDisabled(bmpDisabled.Ok() ? bmpDisabled : bmpNormal);
  91
  92         SetBestSize(wxDefaultSize);
  93     }
  94
  95 protected:
  96     void OnButton(wxCommandEvent& WXUNUSED(event)) { m_combo->ShowPopup(); }
  97
  98     virtual wxSize DoGetBestClientSize() const
  99     {
 100         const wxBitmap& bmp = GetBitmapLabel();
 101
 102         return wxSize(bmp.GetWidth(), bmp.GetHeight());
 103
 104     }
 105
 106 private:
 107     wxComboControl *m_combo;
 108
 109     DECLARE_EVENT_TABLE()
 110 };
 111
 112 // ----------------------------------------------------------------------------
 113 // wxComboListBox is a listbox modified to be used as a popup window in a
 114 // combobox
 115 // ----------------------------------------------------------------------------
 116
 117 class wxComboListBox : public wxListBox, public wxComboPopup
 118 {
 119 public:
 120     // ctor and dtor
 121     wxComboListBox(wxComboControl *combo, int style = 0);
 122     virtual ~wxComboListBox();
 123
 124     // implement wxComboPopup methods
 125     virtual bool SetSelection(const wxString& value);
 126     virtual void SetSelection(int n, bool select)
 127         { wxListBox::SetSelection( n, select); };
 128     virtual wxControl *GetControl() { return this; }
 129     virtual void OnShow();
 130     virtual wxCoord GetBestWidth() const;
 131
 132 protected:
 133     // we shouldn't return height too big from here
 134     virtual wxSize DoGetBestClientSize() const;
 135
 136     // filter mouse move events happening outside the list box
 137     void OnMouseMove(wxMouseEvent& event);
 138
 139     // set m_clicked value from here
 140     void OnLeftUp(wxMouseEvent& event);
 141
 142     // called whenever the user selects or activates a listbox item
 143     void OnSelect(wxCommandEvent& event);
 144
 145     // used to process wxUniv actions
 146     bool PerformAction(const wxControlAction& action,
 147                        long numArg,
 148                        const wxString& strArg);
 149
 150 private:
 151     // has the mouse been released on this control?
 152     bool m_clicked;
 153
 154     DECLARE_EVENT_TABLE()
 155 };
 156
 157 // ----------------------------------------------------------------------------
 158 // wxComboTextCtrl is a simple text ctrl which forwards
 159 // wxEVT_COMMAND_TEXT_UPDATED events and all key events to the combobox
 160 // ----------------------------------------------------------------------------
 161
 162 class wxComboTextCtrl : public wxTextCtrl
 163 {
 164 public:
 165     wxComboTextCtrl(wxComboControl *combo,
 166                     const wxString& value,
 167                     long style,
 168                     const wxValidator& validator);
 169
 170 protected:
 171     void OnKey(wxKeyEvent& event);
 172     void OnText(wxCommandEvent& event);
 173
 174 private:
 175     wxComboControl *m_combo;
 176
 177     DECLARE_EVENT_TABLE()
 178 };
 179
 180 // ----------------------------------------------------------------------------
 181 // event tables and such
 182 // ----------------------------------------------------------------------------
 183
 184 BEGIN_EVENT_TABLE(wxComboButton, wxButton)
 185     EVT_BUTTON(wxID_ANY, wxComboButton::OnButton)
 186 END_EVENT_TABLE()
 187
 188 BEGIN_EVENT_TABLE(wxComboListBox, wxListBox)
 189     EVT_LISTBOX(wxID_ANY, wxComboListBox::OnSelect)
 190     EVT_LISTBOX_DCLICK(wxID_ANY, wxComboListBox::OnSelect)
 191     EVT_MOTION(wxComboListBox::OnMouseMove)
 192     EVT_LEFT_UP(wxComboListBox::OnLeftUp)
 193 END_EVENT_TABLE()
 194
 195 BEGIN_EVENT_TABLE(wxComboControl, wxControl)
 196     EVT_KEY_DOWN(wxComboControl::OnKey)
 197     EVT_KEY_UP(wxComboControl::OnKey)
 198 END_EVENT_TABLE()
 199
 200 BEGIN_EVENT_TABLE(wxComboTextCtrl, wxTextCtrl)
 201     EVT_KEY_DOWN(wxComboTextCtrl::OnKey)
 202     EVT_KEY_UP(wxComboTextCtrl::OnKey)
 203     EVT_TEXT(wxID_ANY, wxComboTextCtrl::OnText)
 204 END_EVENT_TABLE()
 205
 206 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
 207
 208 // ============================================================================
 209 // implementation
 210 // ============================================================================
 211
 212 // ----------------------------------------------------------------------------
 213 // wxComboControl creation
 214 // ----------------------------------------------------------------------------
 215
 216 void wxComboControl::Init()
 217 {
 218     m_popup = (wxComboPopup *)NULL;
 219     m_winPopup = (wxPopupComboWindow *)NULL;
 220     m_isPopupShown = false;
 221     m_btn = NULL;
 222     m_text = NULL;
 223 }
 224
 225 bool wxComboControl::Create(wxWindow *parent,
 226                             wxWindowID id,
 227                             const wxString& value,
 228                             const wxPoint& pos,
 229                             const wxSize& size,
 230                             long style,
 231                             const wxValidator& validator,
 232                             const wxString& name)
 233 {
 234     // first create our own window, i.e. the one which will contain all
 235     // subcontrols
 236     style &= ~wxBORDER_NONE;
 237     style |= wxBORDER_SUNKEN;
 238     if ( !wxControl::Create(parent, id, pos, size, style, validator, name) )
 239         return false;
 240
 241     // create the text control and the button as our siblings (*not* children),
 242     // don't care about size/position here - they will be set in DoMoveWindow()
 243     m_btn = new wxComboButton(this);
 244     m_text = new wxComboTextCtrl(this,
 245                                  value,
 246                                  style & wxCB_READONLY ? wxTE_READONLY : 0,
 247                                  validator);
 248
 249     // for compatibility with the other ports, the height specified is the
 250     // combined height of the combobox itself and the popup
 251     if ( size.y == wxDefaultCoord )
 252     {
 253         // ok, use default height for popup too
 254         m_heightPopup = wxDefaultCoord;
 255     }
 256     else
 257     {
 258         m_heightPopup = size.y - DoGetBestSize().y;
 259     }
 260
 261     SetBestSize(size);
 262     Move(pos);
 263
 264     // create the popup window immediately here to allow creating the controls
 265     // with parent == GetPopupWindow() from the derived class ctor
 266     m_winPopup = new wxPopupComboWindow(this);
 267
 268     // have to disable this window to avoid interfering it with message
 269     // processing to the text and the button... but pretend it is enabled to
 270     // make IsEnabled() return true
 271     wxControl::Enable(false); // don't use non virtual Disable() here!
 272     m_isEnabled = true;
 273
 274     CreateInputHandler(wxINP_HANDLER_COMBOBOX);
 275
 276     return true;
 277 }
 278
 279 wxComboControl::~wxComboControl()
 280 {
 281     // as the button and the text control are the parent's children and not
 282     // ours, we have to delete them manually - they are not deleted
 283     // automatically by wxWidgets when we're deleted
 284     delete m_btn;
 285     delete m_text;
 286
 287     delete m_winPopup;
 288 }
 289
 290 // ----------------------------------------------------------------------------
 291 // geometry stuff
 292 // ----------------------------------------------------------------------------
 293
 294 void wxComboControl::DoSetSize(int x, int y,
 295                                int width, int WXUNUSED(height),
 296                                int sizeFlags)
 297 {
 298     // combo height is always fixed
 299     wxControl::DoSetSize(x, y, width, DoGetBestSize().y, sizeFlags);
 300 }
 301
 302 wxSize wxComboControl::DoGetBestClientSize() const
 303 {
 304     wxSize sizeBtn = m_btn->GetBestSize(),
 305            sizeText = m_text->GetBestSize();
 306     wxCoord widthPopup = 0;
 307
 308     if (m_popup)
 309     {
 310         widthPopup = m_popup->GetBestWidth();
 311     }
 312
 313     return wxSize(wxMax(sizeText.x + g_comboMargin + sizeBtn.x, widthPopup),
 314                   wxMax(sizeBtn.y, sizeText.y));
 315 }
 316
 317 void wxComboControl::DoMoveWindow(int x, int y, int width, int height)
 318 {
 319     wxControl::DoMoveWindow(x, y, width, height);
 320
 321     // position the subcontrols inside the client area
 322     wxRect rectBorders = GetRenderer()->GetBorderDimensions(GetBorder());
 323     x += rectBorders.x;
 324     y += rectBorders.y;
 325     width -= rectBorders.x + rectBorders.width;
 326     height -= rectBorders.y + rectBorders.height;
 327
 328     wxSize sizeBtn = m_btn->GetBestSize();
 329
 330     wxCoord wText = width - sizeBtn.x;
 331     wxPoint p = GetParent() ? GetParent()->GetClientAreaOrigin() : wxPoint(0,0);
 332     m_text->SetSize(x - p.x, y - p.y, wText, height);
 333     m_btn->SetSize(x - p.x + wText, y - p.y, sizeBtn.x, height);
 334 }
 335
 336 // ----------------------------------------------------------------------------
 337 // operations
 338 // ----------------------------------------------------------------------------
 339
 340 bool wxComboControl::Enable(bool enable)
 341 {
 342     if ( !wxControl::Enable(enable) )
 343         return false;
 344
 345     m_btn->Enable(enable);
 346     m_text->Enable(enable);
 347
 348     return true;
 349 }
 350
 351 bool wxComboControl::Show(bool show)
 352 {
 353     if ( !wxControl::Show(show) )
 354         return false;
 355
 356     if (m_btn)
 357         m_btn->Show(show);
 358
 359     if (m_text)
 360         m_text->Show(show);
 361
 362     return true;
 363 }
 364
 365 #if wxUSE_TOOLTIPS
 366 void wxComboControl::DoSetToolTip(wxToolTip *tooltip)
 367 {
 368     wxControl::DoSetToolTip(tooltip);
 369
 370     // Set tool tip for button and text box
 371     if (m_text && m_btn)
 372     {
 373         if (tooltip)
 374         {
 375             const wxString &tip = tooltip->GetTip();
 376             m_text->SetToolTip(tip);
 377             m_btn->SetToolTip(tip);
 378         }
 379         else
 380         {
 381             m_text->SetToolTip(NULL);
 382             m_btn->SetToolTip(NULL);
 383         }
 384     }
 385 }
 386 #endif // wxUSE_TOOLTIPS
 387
 388 // ----------------------------------------------------------------------------
 389 // popup window handling
 390 // ----------------------------------------------------------------------------
 391
 392 void wxComboControl::SetPopupControl(wxComboPopup *popup)
 393 {
 394     m_popup = popup;
 395 }
 396
 397 void wxComboControl::ShowPopup()
 398 {
 399     wxCHECK_RET( m_popup, _T("no popup to show in wxComboControl") );
 400     wxCHECK_RET( !IsPopupShown(), _T("popup window already shown") );
 401
 402     wxControl *control = m_popup->GetControl();
 403
 404     // size and position the popup window correctly
 405     m_winPopup->SetSize(GetSize().x,
 406                         m_heightPopup == wxDefaultCoord ? control->GetBestSize().y
 407                                             : m_heightPopup);
 408     wxSize sizePopup = m_winPopup->GetClientSize();
 409     control->SetSize(0, 0, sizePopup.x, sizePopup.y);
 410
 411     // some controls don't accept the size we give then: e.g. a listbox may
 412     // require more space to show its last row
 413     wxSize sizeReal = control->GetSize();
 414     if ( sizeReal != sizePopup )
 415     {
 416         m_winPopup->SetClientSize(sizeReal);
 417     }
 418
 419     m_winPopup->PositionNearCombo();
 420
 421     // show it
 422     m_popup->OnShow();
 423     m_winPopup->Popup(m_text);
 424     m_text->SelectAll();
 425     m_popup->SetSelection(m_text->GetValue());
 426
 427     m_isPopupShown = true;
 428 }
 429
 430 void wxComboControl::HidePopup()
 431 {
 432     wxCHECK_RET( m_popup, _T("no popup to hide in wxComboControl") );
 433     wxCHECK_RET( IsPopupShown(), _T("popup window not shown") );
 434
 435     m_winPopup->Dismiss();
 436
 437     m_isPopupShown = false;
 438 }
 439
 440 void wxComboControl::OnSelect(const wxString& value)
 441 {
 442     m_text->SetValue(value);
 443     m_text->SelectAll();
 444
 445     OnDismiss();
 446 }
 447
 448 void wxComboControl::OnDismiss()
 449 {
 450     HidePopup();
 451     m_text->SetFocus();
 452 }
 453
 454 // ----------------------------------------------------------------------------
 455 // wxComboTextCtrl
 456 // ----------------------------------------------------------------------------
 457
 458 wxComboTextCtrl::wxComboTextCtrl(wxComboControl *combo,
 459                                  const wxString& value,
 460                                  long style,
 461                                  const wxValidator& validator)
 462                : wxTextCtrl(combo->GetParent(), wxID_ANY, value,
 463                             wxDefaultPosition, wxDefaultSize,
 464                             wxBORDER_NONE | style,
 465                             validator)
 466 {
 467     m_combo = combo;
 468 }
 469
 470 void wxComboTextCtrl::OnText(wxCommandEvent& event)
 471 {
 472     if ( m_combo->IsPopupShown() )
 473     {
 474         m_combo->GetPopupControl()->SetSelection(GetValue());
 475     }
 476
 477     // we need to make a copy of the event to have the correct originating
 478     // object and id
 479     wxCommandEvent event2 = event;
 480     event2.SetEventObject(m_combo);
 481     event2.SetId(m_combo->GetId());
 482
 483     // there is a small incompatibility with wxMSW here: the combobox gets the
 484     // event before the text control in our case which corresponds to SMW
 485     // CBN_EDITUPDATE notification and not CBN_EDITCHANGE one wxMSW currently
 486     // uses
 487     //
 488     // if this is really a problem, we can play games with the event handlers
 489     // to circumvent this
 490     (void)m_combo->ProcessEvent(event2);
 491
 492     event.Skip();
 493 }
 494
 495 // pass the keys we don't process to the combo first
 496 void wxComboTextCtrl::OnKey(wxKeyEvent& event)
 497 {
 498     switch ( event.GetKeyCode() )
 499     {
 500         case WXK_RETURN:
 501             // the popup control gets it first but only if it is shown
 502             if ( !m_combo->IsPopupShown() )
 503                 break;
 504             //else: fall through
 505
 506         case WXK_UP:
 507         case WXK_DOWN:
 508         case WXK_ESCAPE:
 509         case WXK_PAGEDOWN:
 510         case WXK_PAGEUP:
 511         case WXK_PRIOR:
 512         case WXK_NEXT:
 513             (void)m_combo->ProcessEvent(event);
 514             return;
 515     }
 516
 517     event.Skip();
 518 }
 519
 520 // ----------------------------------------------------------------------------
 521 // wxComboListBox
 522 // ----------------------------------------------------------------------------
 523
 524 wxComboListBox::wxComboListBox(wxComboControl *combo, int style)
 525               : wxListBox(combo->GetPopupWindow(), wxID_ANY,
 526                           wxDefaultPosition, wxDefaultSize,
 527                           0, NULL,
 528                           wxBORDER_SIMPLE | wxLB_INT_HEIGHT | style),
 529                 wxComboPopup(combo)
 530 {
 531     // we don't react to the mouse events outside the window at all
 532     StopAutoScrolling();
 533 }
 534
 535 wxComboListBox::~wxComboListBox()
 536 {
 537 }
 538
 539 bool wxComboListBox::SetSelection(const wxString& value)
 540 {
 541     // FindItem() would just find the current item for an empty string (it
 542     // always matches), but we want to show the first one in such case
 543     if ( value.empty() )
 544     {
 545         if ( GetCount() )
 546         {
 547             wxListBox::SetSelection(0);
 548         }
 549         //else: empty listbox - nothing to do
 550     }
 551     else if ( !FindItem(value) )
 552     {
 553         // no match att all
 554         return false;
 555     }
 556
 557     return true;
 558 }
 559
 560 void wxComboListBox::OnSelect(wxCommandEvent& event)
 561 {
 562     if ( m_clicked )
 563     {
 564         // first update the combo and close the listbox
 565         m_combo->OnSelect(event.GetString());
 566
 567         // next let the user code have the event
 568
 569         // all fields are already filled by the listbox, just change the event
 570         // type and send it to the combo
 571         wxCommandEvent event2 = event;
 572         event2.SetEventType(wxEVT_COMMAND_COMBOBOX_SELECTED);
 573         event2.SetEventObject(m_combo);
 574         event2.SetId(m_combo->GetId());
 575         m_combo->ProcessEvent(event2);
 576     }
 577     //else: ignore the events resultign from just moving the mouse initially
 578 }
 579
 580 void wxComboListBox::OnShow()
 581 {
 582     // nobody clicked us yet
 583     m_clicked = false;
 584 }
 585
 586 bool wxComboListBox::PerformAction(const wxControlAction& action,
 587                                    long numArg,
 588                                    const wxString& strArg)
 589
 590 {
 591     if ( action == wxACTION_LISTBOX_FIND )
 592     {
 593         // we don't let the listbox handle this as instead of just using the
 594         // single key presses, as usual, we use the text ctrl value as prefix
 595         // and this is done by wxComboControl itself
 596         return true;
 597     }
 598
 599     return wxListBox::PerformAction(action, numArg, strArg);
 600 }
 601
 602 void wxComboListBox::OnLeftUp(wxMouseEvent& event)
 603 {
 604     // we should dismiss the combo now
 605     m_clicked = true;
 606
 607     event.Skip();
 608 }
 609
 610 void wxComboListBox::OnMouseMove(wxMouseEvent& event)
 611 {
 612     // while a wxComboListBox is shown, it always has capture, so if it doesn't
 613     // we're about to go away anyhow (normally this shouldn't happen at all,
 614     // but I don't put assert here as it just might do on other platforms and
 615     // it doesn't break anythign anyhow)
 616     if ( this == wxWindow::GetCapture() )
 617     {
 618         if ( HitTest(event.GetPosition()) == wxHT_WINDOW_INSIDE )
 619         {
 620             event.Skip();
 621         }
 622         //else: popup shouldn't react to the mouse motions outside it, it only
 623         //      captures the mouse to be able to detect when it must be
 624         //      dismissed, so don't call Skip()
 625     }
 626 }
 627
 628 wxCoord wxComboListBox::GetBestWidth() const
 629 {
 630     wxSize size = wxListBox::GetBestSize();
 631     return size.x;
 632 }
 633
 634 wxSize wxComboListBox::DoGetBestClientSize() const
 635 {
 636     // don't return size too big or we risk to not fit on the screen
 637     wxSize size = wxListBox::DoGetBestClientSize();
 638     wxCoord hChar = GetCharHeight();
 639
 640     int nLines = size.y / hChar;
 641
 642     // 10 is the same limit as used by wxMSW
 643     if ( nLines > 10 )
 644     {
 645         size.y = 10*hChar;
 646     }
 647
 648     return size;
 649 }
 650
 651 // ----------------------------------------------------------------------------
 652 // wxComboBox
 653 // ----------------------------------------------------------------------------
 654
 655 void wxComboBox::Init()
 656 {
 657     m_lbox = (wxListBox *)NULL;
 658 }
 659
 660 wxComboBox::wxComboBox(wxWindow *parent,
 661                        wxWindowID id,
 662                        const wxString& value,
 663                        const wxPoint& pos,
 664                        const wxSize& size,
 665                        const wxArrayString& choices,
 666                        long style,
 667                        const wxValidator& validator,
 668                        const wxString& name)
 669 {
 670     Init();
 671
 672     Create(parent, id, value, pos, size, choices, style, validator, name);
 673 }
 674
 675 bool wxComboBox::Create(wxWindow *parent,
 676                         wxWindowID id,
 677                         const wxString& value,
 678                         const wxPoint& pos,
 679                         const wxSize& size,
 680                         const wxArrayString& choices,
 681                         long style,
 682                         const wxValidator& validator,
 683                         const wxString& name)
 684 {
 685     wxCArrayString chs(choices);
 686
 687     return Create(parent, id, value, pos, size, chs.GetCount(),
 688                   chs.GetStrings(), style, validator, name);
 689 }
 690
 691 bool wxComboBox::Create(wxWindow *parent,
 692                         wxWindowID id,
 693                         const wxString& value,
 694                         const wxPoint& pos,
 695                         const wxSize& size,
 696                         int n,
 697                         const wxString choices[],
 698                         long style,
 699                         const wxValidator& validator,
 700                         const wxString& name)
 701 {
 702     if ( !wxComboControl::Create(parent, id, value, pos, size, style,
 703                                  validator, name) )
 704     {
 705         return false;
 706     }
 707
 708     wxComboListBox *combolbox =
 709         new wxComboListBox(this, style & wxCB_SORT ? wxLB_SORT : 0);
 710     m_lbox = combolbox;
 711     m_lbox->Set(n, choices);
 712
 713     SetPopupControl(combolbox);
 714
 715     return true;
 716 }
 717
 718 wxComboBox::~wxComboBox()
 719 {
 720 }
 721
 722 // ----------------------------------------------------------------------------
 723 // wxComboBox methods forwarded to wxTextCtrl
 724 // ----------------------------------------------------------------------------
 725
 726 wxString wxComboBox::GetValue() const
 727 {
 728     return GetText()->GetValue();
 729 }
 730
 731 void wxComboBox::SetValue(const wxString& value)
 732 {
 733     GetText()->SetValue(value);
 734 }
 735
 736 void wxComboBox::Copy()
 737 {
 738     GetText()->Copy();
 739 }
 740
 741 void wxComboBox::Cut()
 742 {
 743     GetText()->Cut();
 744 }
 745
 746 void wxComboBox::Paste()
 747 {
 748     GetText()->Paste();
 749 }
 750
 751 void wxComboBox::SetInsertionPoint(long pos)
 752 {
 753     GetText()->SetInsertionPoint(pos);
 754 }
 755
 756 void wxComboBox::SetInsertionPointEnd()
 757 {
 758     GetText()->SetInsertionPointEnd();
 759 }
 760
 761 long wxComboBox::GetInsertionPoint() const
 762 {
 763     return GetText()->GetInsertionPoint();
 764 }
 765
 766 long wxComboBox::GetLastPosition() const
 767 {
 768     return GetText()->GetLastPosition();
 769 }
 770
 771 void wxComboBox::Replace(long from, long to, const wxString& value)
 772 {
 773     GetText()->Replace(from, to, value);
 774 }
 775
 776 void wxComboBox::Remove(long from, long to)
 777 {
 778     GetText()->Remove(from, to);
 779 }
 780
 781 void wxComboBox::SetSelection(long from, long to)
 782 {
 783     GetText()->SetSelection(from, to);
 784 }
 785
 786 void wxComboBox::SetEditable(bool editable)
 787 {
 788     GetText()->SetEditable(editable);
 789 }
 790
 791 // ----------------------------------------------------------------------------
 792 // wxComboBox methods forwarded to wxListBox
 793 // ----------------------------------------------------------------------------
 794
 795 void wxComboBox::Clear()
 796 {
 797     GetLBox()->Clear();
 798     GetText()->SetValue(wxEmptyString);
 799 }
 800
 801 void wxComboBox::Delete(int n)
 802 {
 803     wxCHECK_RET( (n >= 0) && (n < GetCount()), _T("invalid index in wxComboBox::Delete") );
 804
 805     if (GetSelection() == n)
 806         GetText()->SetValue(wxEmptyString);
 807
 808     GetLBox()->Delete(n);
 809 }
 810
 811 int wxComboBox::GetCount() const
 812 {
 813     return GetLBox()->GetCount();
 814 }
 815
 816 wxString wxComboBox::GetString(int n) const
 817 {
 818     wxCHECK_MSG( (n >= 0) && (n < GetCount()), wxEmptyString, _T("invalid index in wxComboBox::GetString") );
 819
 820     return GetLBox()->GetString(n);
 821 }
 822
 823 void wxComboBox::SetString(int n, const wxString& s)
 824 {
 825     wxCHECK_RET( (n >= 0) && (n < GetCount()), _T("invalid index in wxComboBox::SetString") );
 826
 827     GetLBox()->SetString(n, s);
 828 }
 829
 830 int wxComboBox::FindString(const wxString& s) const
 831 {
 832     return GetLBox()->FindString(s);
 833 }
 834
 835 void wxComboBox::Select(int n)
 836 {
 837     wxCHECK_RET( (n >= 0) && (n < GetCount()), _T("invalid index in wxComboBox::Select") );
 838
 839     GetLBox()->SetSelection(n);
 840     GetText()->SetValue(GetLBox()->GetString(n));
 841 }
 842
 843 int wxComboBox::GetSelection() const
 844 {
 845 #if 1 // FIXME:: What is the correct behavior?
 846     // if the current value isn't one of the listbox strings, return -1
 847     return GetLBox()->GetSelection();
 848 #else
 849     // Why oh why is this done this way?
 850     // It is not because the value displayed in the text can be found
 851     // in the list that it is the item that is selected!
 852     return FindString(GetText()->GetValue());
 853 #endif
 854 }
 855
 856 int wxComboBox::DoAppend(const wxString& item)
 857 {
 858     return GetLBox()->Append(item);
 859 }
 860
 861 int wxComboBox::DoInsert(const wxString& item, int pos)
 862 {
 863     wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
 864     wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
 865
 866     if (pos == GetCount())
 867         return DoAppend(item);
 868
 869     GetLBox()->Insert(item, pos);
 870     return pos;
 871 }
 872
 873 void wxComboBox::DoSetItemClientData(int n, void* clientData)
 874 {
 875     GetLBox()->SetClientData(n, clientData);
 876 }
 877
 878 void *wxComboBox::DoGetItemClientData(int n) const
 879 {
 880     return GetLBox()->GetClientData(n);
 881 }
 882
 883 void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData)
 884 {
 885     GetLBox()->SetClientObject(n, clientData);
 886 }
 887
 888 wxClientData* wxComboBox::DoGetItemClientObject(int n) const
 889 {
 890     return GetLBox()->GetClientObject(n);
 891 }
 892
 893 bool wxComboBox::IsEditable() const
 894 {
 895         return GetText() != NULL && (!HasFlag(wxCB_READONLY) || GetText()->IsEditable());
 896 }
 897
 898 void wxComboBox::Undo()
 899 {
 900     if (IsEditable())
 901         GetText()->Undo();
 902 }
 903
 904 void wxComboBox::Redo()
 905 {
 906     if (IsEditable())
 907         GetText()->Redo();
 908 }
 909
 910 void wxComboBox::SelectAll()
 911 {
 912     GetText()->SelectAll();
 913 }
 914
 915 bool wxComboBox::CanCopy() const
 916 {
 917     if (GetText() != NULL)
 918         return GetText()->CanCopy();
 919     else
 920         return false;
 921 }
 922
 923 bool wxComboBox::CanCut() const
 924 {
 925     if (GetText() != NULL)
 926         return GetText()->CanCut();
 927     else
 928         return false;
 929 }
 930
 931 bool wxComboBox::CanPaste() const
 932 {
 933     if (IsEditable())
 934         return GetText()->CanPaste();
 935     else
 936         return false;
 937 }
 938
 939 bool wxComboBox::CanUndo() const
 940 {
 941     if (IsEditable())
 942         return GetText()->CanUndo();
 943     else
 944         return false;
 945 }
 946
 947 bool wxComboBox::CanRedo() const
 948 {
 949     if (IsEditable())
 950         return GetText()->CanRedo();
 951     else
 952         return false;
 953 }
 954
 955
 956 // ----------------------------------------------------------------------------
 957 // input handling
 958 // ----------------------------------------------------------------------------
 959
 960 void wxComboControl::OnKey(wxKeyEvent& event)
 961 {
 962     if ( m_isPopupShown )
 963     {
 964         // pass it to the popped up control
 965         (void)m_popup->GetControl()->ProcessEvent(event);
 966     }
 967     else // no popup
 968     {
 969         event.Skip();
 970     }
 971 }
 972
 973 bool wxComboControl::PerformAction(const wxControlAction& action,
 974                                    long numArg,
 975                                    const wxString& strArg)
 976 {
 977     bool processed = false;
 978     if ( action == wxACTION_COMBOBOX_POPUP )
 979     {
 980         if ( !m_isPopupShown )
 981         {
 982             ShowPopup();
 983
 984             processed = true;
 985         }
 986     }
 987     else if ( action == wxACTION_COMBOBOX_DISMISS )
 988     {
 989         if ( m_isPopupShown )
 990         {
 991             HidePopup();
 992
 993             processed = true;
 994         }
 995     }
 996
 997     if ( !processed )
 998     {
 999         // pass along
1000         return wxControl::PerformAction(action, numArg, strArg);
1001     }
1002
1003     return true;
1004 }
1005
1006 // ----------------------------------------------------------------------------
1007 // wxStdComboBoxInputHandler
1008 // ----------------------------------------------------------------------------
1009
1010 wxStdComboBoxInputHandler::wxStdComboBoxInputHandler(wxInputHandler *inphand)
1011                          : wxStdInputHandler(inphand)
1012 {
1013 }
1014
1015 bool wxStdComboBoxInputHandler::HandleKey(wxInputConsumer *consumer,
1016                                           const wxKeyEvent& event,
1017                                           bool pressed)
1018 {
1019     if ( pressed )
1020     {
1021         wxControlAction action;
1022         switch ( event.GetKeyCode() )
1023         {
1024             case WXK_DOWN:
1025                 action = wxACTION_COMBOBOX_POPUP;
1026                 break;
1027
1028             case WXK_ESCAPE:
1029                 action = wxACTION_COMBOBOX_DISMISS;
1030                 break;
1031         }
1032
1033         if ( !action.IsEmpty() )
1034         {
1035             consumer->PerformAction(action);
1036
1037             return true;
1038         }
1039     }
1040
1041     return wxStdInputHandler::HandleKey(consumer, event, pressed);
1042 }
1043
1044 #endif // wxUSE_COMBOBOX