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& s);
 126     virtual wxControl *GetControl() { return this; }
 127     virtual void OnShow();
 128     virtual wxCoord GetBestWidth() const;
 129
 130     // fix virtual function hiding
 131     virtual void SetSelection(int n) { DoSetSelection(n, true); }
 132     void SetSelection(int n, bool select) { DoSetSelection(n, select); }
 133
 134 protected:
 135     // we shouldn't return height too big from here
 136     virtual wxSize DoGetBestClientSize() const;
 137
 138     // filter mouse move events happening outside the list box
 139     void OnMouseMove(wxMouseEvent& event);
 140
 141     // set m_clicked value from here
 142     void OnLeftUp(wxMouseEvent& event);
 143
 144     // called whenever the user selects or activates a listbox item
 145     void OnSelect(wxCommandEvent& event);
 146
 147     // used to process wxUniv actions
 148     bool PerformAction(const wxControlAction& action,
 149                        long numArg,
 150                        const wxString& strArg);
 151
 152 private:
 153     // has the mouse been released on this control?
 154     bool m_clicked;
 155
 156     DECLARE_EVENT_TABLE()
 157 };
 158
 159 // ----------------------------------------------------------------------------
 160 // wxComboTextCtrl is a simple text ctrl which forwards
 161 // wxEVT_COMMAND_TEXT_UPDATED events and all key events to the combobox
 162 // ----------------------------------------------------------------------------
 163
 164 class wxComboTextCtrl : public wxTextCtrl
 165 {
 166 public:
 167     wxComboTextCtrl(wxComboControl *combo,
 168                     const wxString& value,
 169                     long style,
 170                     const wxValidator& validator);
 171
 172 protected:
 173     void OnKey(wxKeyEvent& event);
 174     void OnText(wxCommandEvent& event);
 175
 176 private:
 177     wxComboControl *m_combo;
 178
 179     DECLARE_EVENT_TABLE()
 180 };
 181
 182 // ----------------------------------------------------------------------------
 183 // event tables and such
 184 // ----------------------------------------------------------------------------
 185
 186 BEGIN_EVENT_TABLE(wxComboButton, wxButton)
 187     EVT_BUTTON(wxID_ANY, wxComboButton::OnButton)
 188 END_EVENT_TABLE()
 189
 190 BEGIN_EVENT_TABLE(wxComboListBox, wxListBox)
 191     EVT_LISTBOX(wxID_ANY, wxComboListBox::OnSelect)
 192     EVT_LISTBOX_DCLICK(wxID_ANY, wxComboListBox::OnSelect)
 193     EVT_MOTION(wxComboListBox::OnMouseMove)
 194     EVT_LEFT_UP(wxComboListBox::OnLeftUp)
 195 END_EVENT_TABLE()
 196
 197 BEGIN_EVENT_TABLE(wxComboControl, wxControl)
 198     EVT_KEY_DOWN(wxComboControl::OnKey)
 199     EVT_KEY_UP(wxComboControl::OnKey)
 200 END_EVENT_TABLE()
 201
 202 BEGIN_EVENT_TABLE(wxComboTextCtrl, wxTextCtrl)
 203     EVT_KEY_DOWN(wxComboTextCtrl::OnKey)
 204     EVT_KEY_UP(wxComboTextCtrl::OnKey)
 205     EVT_TEXT(wxID_ANY, wxComboTextCtrl::OnText)
 206 END_EVENT_TABLE()
 207
 208 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
 209
 210 // ============================================================================
 211 // implementation
 212 // ============================================================================
 213
 214 // ----------------------------------------------------------------------------
 215 // wxComboControl creation
 216 // ----------------------------------------------------------------------------
 217
 218 void wxComboControl::Init()
 219 {
 220     m_popup = (wxComboPopup *)NULL;
 221     m_winPopup = (wxPopupComboWindow *)NULL;
 222     m_isPopupShown = false;
 223     m_btn = NULL;
 224     m_text = NULL;
 225 }
 226
 227 bool wxComboControl::Create(wxWindow *parent,
 228                             wxWindowID id,
 229                             const wxString& value,
 230                             const wxPoint& pos,
 231                             const wxSize& size,
 232                             long style,
 233                             const wxValidator& validator,
 234                             const wxString& name)
 235 {
 236     // first create our own window, i.e. the one which will contain all
 237     // subcontrols
 238     style &= ~wxBORDER_NONE;
 239     style |= wxBORDER_SUNKEN;
 240     if ( !wxControl::Create(parent, id, pos, size, style, validator, name) )
 241         return false;
 242
 243     // create the text control and the button as our siblings (*not* children),
 244     // don't care about size/position here - they will be set in DoMoveWindow()
 245     m_btn = new wxComboButton(this);
 246     m_text = new wxComboTextCtrl(this,
 247                                  value,
 248                                  style & wxCB_READONLY ? wxTE_READONLY : 0,
 249                                  validator);
 250
 251     // for compatibility with the other ports, the height specified is the
 252     // combined height of the combobox itself and the popup
 253     if ( size.y == wxDefaultCoord )
 254     {
 255         // ok, use default height for popup too
 256         m_heightPopup = wxDefaultCoord;
 257     }
 258     else
 259     {
 260         m_heightPopup = size.y - DoGetBestSize().y;
 261     }
 262
 263     SetBestSize(size);
 264     Move(pos);
 265
 266     // create the popup window immediately here to allow creating the controls
 267     // with parent == GetPopupWindow() from the derived class ctor
 268     m_winPopup = new wxPopupComboWindow(this);
 269
 270     // have to disable this window to avoid interfering it with message
 271     // processing to the text and the button... but pretend it is enabled to
 272     // make IsEnabled() return true
 273     wxControl::Enable(false); // don't use non virtual Disable() here!
 274     m_isEnabled = true;
 275
 276     CreateInputHandler(wxINP_HANDLER_COMBOBOX);
 277
 278     return true;
 279 }
 280
 281 wxComboControl::~wxComboControl()
 282 {
 283     // as the button and the text control are the parent's children and not
 284     // ours, we have to delete them manually - they are not deleted
 285     // automatically by wxWidgets when we're deleted
 286     delete m_btn;
 287     delete m_text;
 288
 289     delete m_winPopup;
 290 }
 291
 292 // ----------------------------------------------------------------------------
 293 // geometry stuff
 294 // ----------------------------------------------------------------------------
 295
 296 void wxComboControl::DoSetSize(int x, int y,
 297                                int width, int WXUNUSED(height),
 298                                int sizeFlags)
 299 {
 300     // combo height is always fixed
 301     wxControl::DoSetSize(x, y, width, DoGetBestSize().y, sizeFlags);
 302 }
 303
 304 wxSize wxComboControl::DoGetBestClientSize() const
 305 {
 306     wxSize sizeBtn = m_btn->GetBestSize(),
 307            sizeText = m_text->GetBestSize();
 308     wxCoord widthPopup = 0;
 309
 310     if (m_popup)
 311     {
 312         widthPopup = m_popup->GetBestWidth();
 313     }
 314
 315     return wxSize(wxMax(sizeText.x + g_comboMargin + sizeBtn.x, widthPopup),
 316                   wxMax(sizeBtn.y, sizeText.y));
 317 }
 318
 319 void wxComboControl::DoMoveWindow(int x, int y, int width, int height)
 320 {
 321     wxControl::DoMoveWindow(x, y, width, height);
 322
 323     // position the subcontrols inside the client area
 324     wxRect rectBorders = GetRenderer()->GetBorderDimensions(GetBorder());
 325     x += rectBorders.x;
 326     y += rectBorders.y;
 327     width -= rectBorders.x + rectBorders.width;
 328     height -= rectBorders.y + rectBorders.height;
 329
 330     wxSize sizeBtn = m_btn->GetBestSize();
 331
 332     wxCoord wText = width - sizeBtn.x;
 333     wxPoint p = GetParent() ? GetParent()->GetClientAreaOrigin() : wxPoint(0,0);
 334     m_text->SetSize(x - p.x, y - p.y, wText, height);
 335     m_btn->SetSize(x - p.x + wText, y - p.y, sizeBtn.x, height);
 336 }
 337
 338 // ----------------------------------------------------------------------------
 339 // operations
 340 // ----------------------------------------------------------------------------
 341
 342 bool wxComboControl::Enable(bool enable)
 343 {
 344     if ( !wxControl::Enable(enable) )
 345         return false;
 346
 347     m_btn->Enable(enable);
 348     m_text->Enable(enable);
 349
 350     return true;
 351 }
 352
 353 bool wxComboControl::Show(bool show)
 354 {
 355     if ( !wxControl::Show(show) )
 356         return false;
 357
 358     if (m_btn)
 359         m_btn->Show(show);
 360
 361     if (m_text)
 362         m_text->Show(show);
 363
 364     return true;
 365 }
 366
 367 #if wxUSE_TOOLTIPS
 368 void wxComboControl::DoSetToolTip(wxToolTip *tooltip)
 369 {
 370     wxControl::DoSetToolTip(tooltip);
 371
 372     // Set tool tip for button and text box
 373     if (m_text && m_btn)
 374     {
 375         if (tooltip)
 376         {
 377             const wxString &tip = tooltip->GetTip();
 378             m_text->SetToolTip(tip);
 379             m_btn->SetToolTip(tip);
 380         }
 381         else
 382         {
 383             m_text->SetToolTip(NULL);
 384             m_btn->SetToolTip(NULL);
 385         }
 386     }
 387 }
 388 #endif // wxUSE_TOOLTIPS
 389
 390 // ----------------------------------------------------------------------------
 391 // popup window handling
 392 // ----------------------------------------------------------------------------
 393
 394 void wxComboControl::SetPopupControl(wxComboPopup *popup)
 395 {
 396     m_popup = popup;
 397 }
 398
 399 void wxComboControl::ShowPopup()
 400 {
 401     wxCHECK_RET( m_popup, _T("no popup to show in wxComboControl") );
 402     wxCHECK_RET( !IsPopupShown(), _T("popup window already shown") );
 403
 404     wxControl *control = m_popup->GetControl();
 405
 406     // size and position the popup window correctly
 407     m_winPopup->SetSize(GetSize().x,
 408                         m_heightPopup == wxDefaultCoord ? control->GetBestSize().y
 409                                             : m_heightPopup);
 410     wxSize sizePopup = m_winPopup->GetClientSize();
 411     control->SetSize(0, 0, sizePopup.x, sizePopup.y);
 412
 413     // some controls don't accept the size we give then: e.g. a listbox may
 414     // require more space to show its last row
 415     wxSize sizeReal = control->GetSize();
 416     if ( sizeReal != sizePopup )
 417     {
 418         m_winPopup->SetClientSize(sizeReal);
 419     }
 420
 421     m_winPopup->PositionNearCombo();
 422
 423     // show it
 424     m_popup->OnShow();
 425     m_winPopup->Popup(m_text);
 426     m_text->SelectAll();
 427     m_popup->SetSelection(m_text->GetValue());
 428
 429     m_isPopupShown = true;
 430 }
 431
 432 void wxComboControl::HidePopup()
 433 {
 434     wxCHECK_RET( m_popup, _T("no popup to hide in wxComboControl") );
 435     wxCHECK_RET( IsPopupShown(), _T("popup window not shown") );
 436
 437     m_winPopup->Dismiss();
 438
 439     m_isPopupShown = false;
 440 }
 441
 442 void wxComboControl::OnSelect(const wxString& value)
 443 {
 444     m_text->SetValue(value);
 445     m_text->SelectAll();
 446
 447     OnDismiss();
 448 }
 449
 450 void wxComboControl::OnDismiss()
 451 {
 452     HidePopup();
 453     m_text->SetFocus();
 454 }
 455
 456 // ----------------------------------------------------------------------------
 457 // wxComboTextCtrl
 458 // ----------------------------------------------------------------------------
 459
 460 wxComboTextCtrl::wxComboTextCtrl(wxComboControl *combo,
 461                                  const wxString& value,
 462                                  long style,
 463                                  const wxValidator& validator)
 464                : wxTextCtrl(combo->GetParent(), wxID_ANY, value,
 465                             wxDefaultPosition, wxDefaultSize,
 466                             wxBORDER_NONE | style,
 467                             validator)
 468 {
 469     m_combo = combo;
 470 }
 471
 472 void wxComboTextCtrl::OnText(wxCommandEvent& event)
 473 {
 474     if ( m_combo->IsPopupShown() )
 475     {
 476         m_combo->GetPopupControl()->SetSelection(GetValue());
 477     }
 478
 479     // we need to make a copy of the event to have the correct originating
 480     // object and id
 481     wxCommandEvent event2 = event;
 482     event2.SetEventObject(m_combo);
 483     event2.SetId(m_combo->GetId());
 484
 485     // there is a small incompatibility with wxMSW here: the combobox gets the
 486     // event before the text control in our case which corresponds to SMW
 487     // CBN_EDITUPDATE notification and not CBN_EDITCHANGE one wxMSW currently
 488     // uses
 489     //
 490     // if this is really a problem, we can play games with the event handlers
 491     // to circumvent this
 492     (void)m_combo->ProcessEvent(event2);
 493
 494     event.Skip();
 495 }
 496
 497 // pass the keys we don't process to the combo first
 498 void wxComboTextCtrl::OnKey(wxKeyEvent& event)
 499 {
 500     switch ( event.GetKeyCode() )
 501     {
 502         case WXK_RETURN:
 503             // the popup control gets it first but only if it is shown
 504             if ( !m_combo->IsPopupShown() )
 505                 break;
 506             //else: fall through
 507
 508         case WXK_UP:
 509         case WXK_DOWN:
 510         case WXK_ESCAPE:
 511         case WXK_PAGEDOWN:
 512         case WXK_PAGEUP:
 513         case WXK_PRIOR:
 514         case WXK_NEXT:
 515             (void)m_combo->ProcessEvent(event);
 516             return;
 517     }
 518
 519     event.Skip();
 520 }
 521
 522 // ----------------------------------------------------------------------------
 523 // wxComboListBox
 524 // ----------------------------------------------------------------------------
 525
 526 wxComboListBox::wxComboListBox(wxComboControl *combo, int style)
 527               : wxListBox(combo->GetPopupWindow(), wxID_ANY,
 528                           wxDefaultPosition, wxDefaultSize,
 529                           0, NULL,
 530                           wxBORDER_SIMPLE | wxLB_INT_HEIGHT | style),
 531                 wxComboPopup(combo)
 532 {
 533     // we don't react to the mouse events outside the window at all
 534     StopAutoScrolling();
 535 }
 536
 537 wxComboListBox::~wxComboListBox()
 538 {
 539 }
 540
 541 bool wxComboListBox::SetSelection(const wxString& value)
 542 {
 543     // FindItem() would just find the current item for an empty string (it
 544     // always matches), but we want to show the first one in such case
 545     if ( value.empty() )
 546     {
 547         if ( GetCount() )
 548         {
 549             wxListBox::SetSelection(0);
 550         }
 551         //else: empty listbox - nothing to do
 552     }
 553     else if ( !FindItem(value) )
 554     {
 555         // no match att all
 556         return false;
 557     }
 558
 559     return true;
 560 }
 561
 562 void wxComboListBox::OnSelect(wxCommandEvent& event)
 563 {
 564     if ( m_clicked )
 565     {
 566         // first update the combo and close the listbox
 567         m_combo->OnSelect(event.GetString());
 568
 569         // next let the user code have the event
 570
 571         // all fields are already filled by the listbox, just change the event
 572         // type and send it to the combo
 573         wxCommandEvent event2 = event;
 574         event2.SetEventType(wxEVT_COMMAND_COMBOBOX_SELECTED);
 575         event2.SetEventObject(m_combo);
 576         event2.SetId(m_combo->GetId());
 577         m_combo->ProcessEvent(event2);
 578     }
 579     //else: ignore the events resultign from just moving the mouse initially
 580 }
 581
 582 void wxComboListBox::OnShow()
 583 {
 584     // nobody clicked us yet
 585     m_clicked = false;
 586 }
 587
 588 bool wxComboListBox::PerformAction(const wxControlAction& action,
 589                                    long numArg,
 590                                    const wxString& strArg)
 591
 592 {
 593     if ( action == wxACTION_LISTBOX_FIND )
 594     {
 595         // we don't let the listbox handle this as instead of just using the
 596         // single key presses, as usual, we use the text ctrl value as prefix
 597         // and this is done by wxComboControl itself
 598         return true;
 599     }
 600
 601     return wxListBox::PerformAction(action, numArg, strArg);
 602 }
 603
 604 void wxComboListBox::OnLeftUp(wxMouseEvent& event)
 605 {
 606     // we should dismiss the combo now
 607     m_clicked = true;
 608
 609     event.Skip();
 610 }
 611
 612 void wxComboListBox::OnMouseMove(wxMouseEvent& event)
 613 {
 614     // while a wxComboListBox is shown, it always has capture, so if it doesn't
 615     // we're about to go away anyhow (normally this shouldn't happen at all,
 616     // but I don't put assert here as it just might do on other platforms and
 617     // it doesn't break anythign anyhow)
 618     if ( this == wxWindow::GetCapture() )
 619     {
 620         if ( HitTest(event.GetPosition()) == wxHT_WINDOW_INSIDE )
 621         {
 622             event.Skip();
 623         }
 624         //else: popup shouldn't react to the mouse motions outside it, it only
 625         //      captures the mouse to be able to detect when it must be
 626         //      dismissed, so don't call Skip()
 627     }
 628 }
 629
 630 wxCoord wxComboListBox::GetBestWidth() const
 631 {
 632     wxSize size = wxListBox::GetBestSize();
 633     return size.x;
 634 }
 635
 636 wxSize wxComboListBox::DoGetBestClientSize() const
 637 {
 638     // don't return size too big or we risk to not fit on the screen
 639     wxSize size = wxListBox::DoGetBestClientSize();
 640     wxCoord hChar = GetCharHeight();
 641
 642     int nLines = size.y / hChar;
 643
 644     // 10 is the same limit as used by wxMSW
 645     if ( nLines > 10 )
 646     {
 647         size.y = 10*hChar;
 648     }
 649
 650     return size;
 651 }
 652
 653 // ----------------------------------------------------------------------------
 654 // wxComboBox
 655 // ----------------------------------------------------------------------------
 656
 657 void wxComboBox::Init()
 658 {
 659     m_lbox = (wxListBox *)NULL;
 660 }
 661
 662 wxComboBox::wxComboBox(wxWindow *parent,
 663                        wxWindowID id,
 664                        const wxString& value,
 665                        const wxPoint& pos,
 666                        const wxSize& size,
 667                        const wxArrayString& choices,
 668                        long style,
 669                        const wxValidator& validator,
 670                        const wxString& name)
 671 {
 672     Init();
 673
 674     Create(parent, id, value, pos, size, choices, style, validator, name);
 675 }
 676
 677 bool wxComboBox::Create(wxWindow *parent,
 678                         wxWindowID id,
 679                         const wxString& value,
 680                         const wxPoint& pos,
 681                         const wxSize& size,
 682                         const wxArrayString& choices,
 683                         long style,
 684                         const wxValidator& validator,
 685                         const wxString& name)
 686 {
 687     wxCArrayString chs(choices);
 688
 689     return Create(parent, id, value, pos, size, chs.GetCount(),
 690                   chs.GetStrings(), style, validator, name);
 691 }
 692
 693 bool wxComboBox::Create(wxWindow *parent,
 694                         wxWindowID id,
 695                         const wxString& value,
 696                         const wxPoint& pos,
 697                         const wxSize& size,
 698                         int n,
 699                         const wxString choices[],
 700                         long style,
 701                         const wxValidator& validator,
 702                         const wxString& name)
 703 {
 704     if ( !wxComboControl::Create(parent, id, value, pos, size, style,
 705                                  validator, name) )
 706     {
 707         return false;
 708     }
 709
 710     wxComboListBox *combolbox =
 711         new wxComboListBox(this, style & wxCB_SORT ? wxLB_SORT : 0);
 712     m_lbox = combolbox;
 713     m_lbox->Set(n, choices);
 714
 715     SetPopupControl(combolbox);
 716
 717     return true;
 718 }
 719
 720 wxComboBox::~wxComboBox()
 721 {
 722 }
 723
 724 // ----------------------------------------------------------------------------
 725 // wxComboBox methods forwarded to wxTextCtrl
 726 // ----------------------------------------------------------------------------
 727
 728 wxString wxComboBox::GetValue() const
 729 {
 730     return GetText()->GetValue();
 731 }
 732
 733 void wxComboBox::SetValue(const wxString& value)
 734 {
 735     GetText()->SetValue(value);
 736 }
 737
 738 void wxComboBox::Copy()
 739 {
 740     GetText()->Copy();
 741 }
 742
 743 void wxComboBox::Cut()
 744 {
 745     GetText()->Cut();
 746 }
 747
 748 void wxComboBox::Paste()
 749 {
 750     GetText()->Paste();
 751 }
 752
 753 void wxComboBox::SetInsertionPoint(long pos)
 754 {
 755     GetText()->SetInsertionPoint(pos);
 756 }
 757
 758 void wxComboBox::SetInsertionPointEnd()
 759 {
 760     GetText()->SetInsertionPointEnd();
 761 }
 762
 763 long wxComboBox::GetInsertionPoint() const
 764 {
 765     return GetText()->GetInsertionPoint();
 766 }
 767
 768 wxTextPos wxComboBox::GetLastPosition() const
 769 {
 770     return GetText()->GetLastPosition();
 771 }
 772
 773 void wxComboBox::Replace(long from, long to, const wxString& value)
 774 {
 775     GetText()->Replace(from, to, value);
 776 }
 777
 778 void wxComboBox::Remove(long from, long to)
 779 {
 780     GetText()->Remove(from, to);
 781 }
 782
 783 void wxComboBox::SetSelection(long from, long to)
 784 {
 785     GetText()->SetSelection(from, to);
 786 }
 787
 788 void wxComboBox::SetEditable(bool editable)
 789 {
 790     GetText()->SetEditable(editable);
 791 }
 792
 793 // ----------------------------------------------------------------------------
 794 // wxComboBox methods forwarded to wxListBox
 795 // ----------------------------------------------------------------------------
 796
 797 void wxComboBox::Clear()
 798 {
 799     GetLBox()->Clear();
 800     GetText()->SetValue(wxEmptyString);
 801 }
 802
 803 void wxComboBox::Delete(int n)
 804 {
 805     wxCHECK_RET( (n >= 0) && (n < GetCount()), _T("invalid index in wxComboBox::Delete") );
 806
 807     if (GetSelection() == n)
 808         GetText()->SetValue(wxEmptyString);
 809
 810     GetLBox()->Delete(n);
 811 }
 812
 813 int wxComboBox::GetCount() const
 814 {
 815     return GetLBox()->GetCount();
 816 }
 817
 818 wxString wxComboBox::GetString(int n) const
 819 {
 820     wxCHECK_MSG( (n >= 0) && (n < GetCount()), wxEmptyString, _T("invalid index in wxComboBox::GetString") );
 821
 822     return GetLBox()->GetString(n);
 823 }
 824
 825 void wxComboBox::SetString(int n, const wxString& s)
 826 {
 827     wxCHECK_RET( (n >= 0) && (n < GetCount()), _T("invalid index in wxComboBox::SetString") );
 828
 829     GetLBox()->SetString(n, s);
 830 }
 831
 832 int wxComboBox::FindString(const wxString& s) const
 833 {
 834     return GetLBox()->FindString(s);
 835 }
 836
 837 void wxComboBox::SetSelection(int n)
 838 {
 839     wxCHECK_RET( (n >= 0) && (n < GetCount()), _T("invalid index in wxComboBox::Select") );
 840
 841     GetLBox()->SetSelection(n);
 842     GetText()->SetValue(GetLBox()->GetString(n));
 843 }
 844
 845 int wxComboBox::GetSelection() const
 846 {
 847 #if 1 // FIXME:: What is the correct behavior?
 848     // if the current value isn't one of the listbox strings, return -1
 849     return GetLBox()->GetSelection();
 850 #else
 851     // Why oh why is this done this way?
 852     // It is not because the value displayed in the text can be found
 853     // in the list that it is the item that is selected!
 854     return FindString(GetText()->GetValue());
 855 #endif
 856 }
 857
 858 int wxComboBox::DoAppend(const wxString& item)
 859 {
 860     return GetLBox()->Append(item);
 861 }
 862
 863 int wxComboBox::DoInsert(const wxString& item, int pos)
 864 {
 865     wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
 866     wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
 867
 868     if (pos == GetCount())
 869         return DoAppend(item);
 870
 871     GetLBox()->Insert(item, pos);
 872     return pos;
 873 }
 874
 875 void wxComboBox::DoSetItemClientData(int n, void* clientData)
 876 {
 877     GetLBox()->SetClientData(n, clientData);
 878 }
 879
 880 void *wxComboBox::DoGetItemClientData(int n) const
 881 {
 882     return GetLBox()->GetClientData(n);
 883 }
 884
 885 void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData)
 886 {
 887     GetLBox()->SetClientObject(n, clientData);
 888 }
 889
 890 wxClientData* wxComboBox::DoGetItemClientObject(int n) const
 891 {
 892     return GetLBox()->GetClientObject(n);
 893 }
 894
 895 bool wxComboBox::IsEditable() const
 896 {
 897     return GetText() != NULL && (!HasFlag(wxCB_READONLY) || GetText()->IsEditable());
 898 }
 899
 900 void wxComboBox::Undo()
 901 {
 902     if (IsEditable())
 903         GetText()->Undo();
 904 }
 905
 906 void wxComboBox::Redo()
 907 {
 908     if (IsEditable())
 909         GetText()->Redo();
 910 }
 911
 912 void wxComboBox::SelectAll()
 913 {
 914     GetText()->SelectAll();
 915 }
 916
 917 bool wxComboBox::CanCopy() const
 918 {
 919     if (GetText() != NULL)
 920         return GetText()->CanCopy();
 921     else
 922         return false;
 923 }
 924
 925 bool wxComboBox::CanCut() const
 926 {
 927     if (GetText() != NULL)
 928         return GetText()->CanCut();
 929     else
 930         return false;
 931 }
 932
 933 bool wxComboBox::CanPaste() const
 934 {
 935     if (IsEditable())
 936         return GetText()->CanPaste();
 937     else
 938         return false;
 939 }
 940
 941 bool wxComboBox::CanUndo() const
 942 {
 943     if (IsEditable())
 944         return GetText()->CanUndo();
 945     else
 946         return false;
 947 }
 948
 949 bool wxComboBox::CanRedo() const
 950 {
 951     if (IsEditable())
 952         return GetText()->CanRedo();
 953     else
 954         return false;
 955 }
 956
 957
 958 // ----------------------------------------------------------------------------
 959 // input handling
 960 // ----------------------------------------------------------------------------
 961
 962 void wxComboControl::OnKey(wxKeyEvent& event)
 963 {
 964     if ( m_isPopupShown )
 965     {
 966         // pass it to the popped up control
 967         (void)m_popup->GetControl()->ProcessEvent(event);
 968     }
 969     else // no popup
 970     {
 971         event.Skip();
 972     }
 973 }
 974
 975 bool wxComboControl::PerformAction(const wxControlAction& action,
 976                                    long numArg,
 977                                    const wxString& strArg)
 978 {
 979     bool processed = false;
 980     if ( action == wxACTION_COMBOBOX_POPUP )
 981     {
 982         if ( !m_isPopupShown )
 983         {
 984             ShowPopup();
 985
 986             processed = true;
 987         }
 988     }
 989     else if ( action == wxACTION_COMBOBOX_DISMISS )
 990     {
 991         if ( m_isPopupShown )
 992         {
 993             HidePopup();
 994
 995             processed = true;
 996         }
 997     }
 998
 999     if ( !processed )
1000     {
1001         // pass along
1002         return wxControl::PerformAction(action, numArg, strArg);
1003     }
1004
1005     return true;
1006 }
1007
1008 // ----------------------------------------------------------------------------
1009 // wxStdComboBoxInputHandler
1010 // ----------------------------------------------------------------------------
1011
1012 wxStdComboBoxInputHandler::wxStdComboBoxInputHandler(wxInputHandler *inphand)
1013                          : wxStdInputHandler(inphand)
1014 {
1015 }
1016
1017 bool wxStdComboBoxInputHandler::HandleKey(wxInputConsumer *consumer,
1018                                           const wxKeyEvent& event,
1019                                           bool pressed)
1020 {
1021     if ( pressed )
1022     {
1023         wxControlAction action;
1024         switch ( event.GetKeyCode() )
1025         {
1026             case WXK_DOWN:
1027                 action = wxACTION_COMBOBOX_POPUP;
1028                 break;
1029
1030             case WXK_ESCAPE:
1031                 action = wxACTION_COMBOBOX_DISMISS;
1032                 break;
1033         }
1034
1035         if ( !action.IsEmpty() )
1036         {
1037             consumer->PerformAction(action);
1038
1039             return true;
1040         }
1041     }
1042
1043     return wxStdInputHandler::HandleKey(consumer, event, pressed);
1044 }
1045
1046 #endif // wxUSE_COMBOBOX