samples/widgets/choice.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        choice.cpp
   4 // Purpose:     Part of the widgets sample showing wxChoice
   5 // Created:     23.07.07
   6 // Id:          $Id$
   7 // License:     wxWindows license
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // ============================================================================
  11 // declarations
  12 // ============================================================================
  13
  14 // ----------------------------------------------------------------------------
  15 // headers
  16 // ----------------------------------------------------------------------------
  17
  18 // for compilers that support precompilation, includes "wx/wx.h".
  19 #include "wx/wxprec.h"
  20
  21 #ifdef __BORLANDC__
  22     #pragma hdrstop
  23 #endif
  24
  25 #if wxUSE_CHOICE
  26
  27 // for all others, include the necessary headers
  28 #ifndef WX_PRECOMP
  29     #include "wx/log.h"
  30
  31     #include "wx/bitmap.h"
  32     #include "wx/button.h"
  33     #include "wx/checkbox.h"
  34     #include "wx/choice.h"
  35     #include "wx/combobox.h"
  36     #include "wx/radiobox.h"
  37     #include "wx/statbox.h"
  38     #include "wx/textctrl.h"
  39 #endif
  40
  41 #include "wx/sizer.h"
  42
  43 #include "wx/checklst.h"
  44
  45 #include "itemcontainer.h"
  46 #include "widgets.h"
  47
  48 #include "icons/choice.xpm"
  49
  50 // ----------------------------------------------------------------------------
  51 // constants
  52 // ----------------------------------------------------------------------------
  53
  54 // control ids
  55 enum
  56 {
  57     ChoicePage_Reset = wxID_HIGHEST,
  58     ChoicePage_Add,
  59     ChoicePage_AddText,
  60     ChoicePage_AddSeveral,
  61     ChoicePage_AddMany,
  62     ChoicePage_Clear,
  63     ChoicePage_Change,
  64     ChoicePage_ChangeText,
  65     ChoicePage_Delete,
  66     ChoicePage_DeleteText,
  67     ChoicePage_DeleteSel,
  68     ChoicePage_Choice,
  69     ChoicePage_ContainerTests
  70 };
  71
  72 // ----------------------------------------------------------------------------
  73 // ChoiceWidgetsPage
  74 // ----------------------------------------------------------------------------
  75
  76 class ChoiceWidgetsPage : public ItemContainerWidgetsPage
  77 {
  78 public:
  79     ChoiceWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist);
  80
  81     virtual wxControl *GetWidget() const { return m_choice; }
  82     virtual wxItemContainer* GetContainer() const { return m_choice; }
  83     virtual void RecreateWidget() { CreateChoice(); }
  84
  85     // lazy creation of the content
  86     virtual void CreateContent();
  87
  88 protected:
  89     // event handlers
  90     void OnButtonReset(wxCommandEvent& event);
  91     void OnButtonChange(wxCommandEvent& event);
  92     void OnButtonDelete(wxCommandEvent& event);
  93     void OnButtonDeleteSel(wxCommandEvent& event);
  94     void OnButtonClear(wxCommandEvent& event);
  95     void OnButtonAdd(wxCommandEvent& event);
  96     void OnButtonAddSeveral(wxCommandEvent& event);
  97     void OnButtonAddMany(wxCommandEvent& event);
  98
  99     void OnChoice(wxCommandEvent& event);
 100
 101     void OnCheckOrRadioBox(wxCommandEvent& event);
 102
 103     void OnUpdateUIAddSeveral(wxUpdateUIEvent& event);
 104     void OnUpdateUIClearButton(wxUpdateUIEvent& event);
 105     void OnUpdateUIDeleteButton(wxUpdateUIEvent& event);
 106     void OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event);
 107     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
 108
 109     // reset the choice parameters
 110     void Reset();
 111
 112     // (re)create the choice
 113     void CreateChoice();
 114
 115     // should it be sorted?
 116     bool m_sorted;
 117
 118     // the controls
 119     // ------------
 120
 121     // the checkboxes
 122     wxCheckBox *m_chkSort;
 123
 124     // the choice itself and the sizer it is in
 125 #ifdef __WXWINCE__
 126     wxChoiceBase
 127 #else
 128     wxChoice
 129 #endif
 130                   *m_choice;
 131
 132     wxSizer *m_sizerChoice;
 133
 134     // the text entries for "Add/change string" and "Delete" buttons
 135     wxTextCtrl *m_textAdd,
 136                *m_textChange,
 137                *m_textDelete;
 138
 139 private:
 140     DECLARE_EVENT_TABLE()
 141     DECLARE_WIDGETS_PAGE(ChoiceWidgetsPage)
 142 };
 143
 144 // ----------------------------------------------------------------------------
 145 // event tables
 146 // ----------------------------------------------------------------------------
 147
 148 BEGIN_EVENT_TABLE(ChoiceWidgetsPage, WidgetsPage)
 149     EVT_BUTTON(ChoicePage_Reset, ChoiceWidgetsPage::OnButtonReset)
 150     EVT_BUTTON(ChoicePage_Change, ChoiceWidgetsPage::OnButtonChange)
 151     EVT_BUTTON(ChoicePage_Delete, ChoiceWidgetsPage::OnButtonDelete)
 152     EVT_BUTTON(ChoicePage_DeleteSel, ChoiceWidgetsPage::OnButtonDeleteSel)
 153     EVT_BUTTON(ChoicePage_Clear, ChoiceWidgetsPage::OnButtonClear)
 154     EVT_BUTTON(ChoicePage_Add, ChoiceWidgetsPage::OnButtonAdd)
 155     EVT_BUTTON(ChoicePage_AddSeveral, ChoiceWidgetsPage::OnButtonAddSeveral)
 156     EVT_BUTTON(ChoicePage_AddMany, ChoiceWidgetsPage::OnButtonAddMany)
 157     EVT_BUTTON(ChoicePage_ContainerTests, ItemContainerWidgetsPage::OnButtonTestItemContainer)
 158
 159     EVT_TEXT_ENTER(ChoicePage_AddText, ChoiceWidgetsPage::OnButtonAdd)
 160     EVT_TEXT_ENTER(ChoicePage_DeleteText, ChoiceWidgetsPage::OnButtonDelete)
 161
 162     EVT_UPDATE_UI(ChoicePage_Reset, ChoiceWidgetsPage::OnUpdateUIResetButton)
 163     EVT_UPDATE_UI(ChoicePage_AddSeveral, ChoiceWidgetsPage::OnUpdateUIAddSeveral)
 164     EVT_UPDATE_UI(ChoicePage_Clear, ChoiceWidgetsPage::OnUpdateUIClearButton)
 165     EVT_UPDATE_UI(ChoicePage_DeleteText, ChoiceWidgetsPage::OnUpdateUIClearButton)
 166     EVT_UPDATE_UI(ChoicePage_Delete, ChoiceWidgetsPage::OnUpdateUIDeleteButton)
 167     EVT_UPDATE_UI(ChoicePage_Change, ChoiceWidgetsPage::OnUpdateUIDeleteSelButton)
 168     EVT_UPDATE_UI(ChoicePage_ChangeText, ChoiceWidgetsPage::OnUpdateUIDeleteSelButton)
 169     EVT_UPDATE_UI(ChoicePage_DeleteSel, ChoiceWidgetsPage::OnUpdateUIDeleteSelButton)
 170
 171     EVT_CHOICE(ChoicePage_Choice, ChoiceWidgetsPage::OnChoice)
 172
 173     EVT_CHECKBOX(wxID_ANY, ChoiceWidgetsPage::OnCheckOrRadioBox)
 174     EVT_RADIOBOX(wxID_ANY, ChoiceWidgetsPage::OnCheckOrRadioBox)
 175 END_EVENT_TABLE()
 176
 177 // ============================================================================
 178 // implementation
 179 // ============================================================================
 180
 181 #if defined(__WXUNIVERSAL__)
 182     #define FAMILY_CTRLS UNIVERSAL_CTRLS
 183 #else
 184     #define FAMILY_CTRLS NATIVE_CTRLS
 185 #endif
 186
 187 IMPLEMENT_WIDGETS_PAGE(ChoiceWidgetsPage, _T("Choice"),
 188                        FAMILY_CTRLS | WITH_ITEMS_CTRLS
 189                        );
 190
 191 ChoiceWidgetsPage::ChoiceWidgetsPage(WidgetsBookCtrl *book,
 192                                      wxImageList *imaglist)
 193                   : ItemContainerWidgetsPage(book, imaglist, choice_xpm)
 194 {
 195     // init everything
 196
 197     m_chkSort = (wxCheckBox *)NULL;
 198
 199     m_choice = NULL;
 200     m_sizerChoice = (wxSizer *)NULL;
 201
 202 }
 203
 204 void ChoiceWidgetsPage::CreateContent()
 205 {
 206     /*
 207        What we create here is a frame having 3 panes: style pane is the
 208        leftmost one, in the middle the pane with buttons allowing to perform
 209        miscellaneous choice operations and the pane containing the choice
 210        itself to the right
 211     */
 212     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 213
 214     // left pane
 215     wxStaticBox *box = new wxStaticBox(this, wxID_ANY,
 216         _T("&Set choice parameters"));
 217     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 218
 219     static const wxString modes[] =
 220     {
 221         _T("single"),
 222         _T("extended"),
 223         _T("multiple"),
 224     };
 225
 226     m_chkSort = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Sort items"));
 227
 228     wxButton *btn = new wxButton(this, ChoicePage_Reset, _T("&Reset"));
 229     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 230
 231     // middle pane
 232     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY,
 233         _T("&Change choice contents"));
 234     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 235
 236     wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
 237     btn = new wxButton(this, ChoicePage_Add, _T("&Add this string"));
 238     m_textAdd = new wxTextCtrl(this, ChoicePage_AddText, _T("test item 0"));
 239     sizerRow->Add(btn, 0, wxRIGHT, 5);
 240     sizerRow->Add(m_textAdd, 1, wxLEFT, 5);
 241     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 242
 243     btn = new wxButton(this, ChoicePage_AddSeveral, _T("&Insert a few strings"));
 244     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 245
 246     btn = new wxButton(this, ChoicePage_AddMany, _T("Add &many strings"));
 247     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 248
 249     sizerRow = new wxBoxSizer(wxHORIZONTAL);
 250     btn = new wxButton(this, ChoicePage_Change, _T("C&hange current"));
 251     m_textChange = new wxTextCtrl(this, ChoicePage_ChangeText, wxEmptyString);
 252     sizerRow->Add(btn, 0, wxRIGHT, 5);
 253     sizerRow->Add(m_textChange, 1, wxLEFT, 5);
 254     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 255
 256     sizerRow = new wxBoxSizer(wxHORIZONTAL);
 257     btn = new wxButton(this, ChoicePage_Delete, _T("&Delete this item"));
 258     m_textDelete = new wxTextCtrl(this, ChoicePage_DeleteText, wxEmptyString);
 259     sizerRow->Add(btn, 0, wxRIGHT, 5);
 260     sizerRow->Add(m_textDelete, 1, wxLEFT, 5);
 261     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 262
 263     btn = new wxButton(this, ChoicePage_DeleteSel, _T("Delete &selection"));
 264     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 265
 266     btn = new wxButton(this, ChoicePage_Clear, _T("&Clear"));
 267     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 268
 269     btn = new wxButton(this, ChoicePage_ContainerTests, _T("Run &tests"));
 270     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 271
 272     // right pane
 273     wxSizer *sizerRight = new wxBoxSizer(wxVERTICAL);
 274     m_choice = new wxChoice(this, ChoicePage_Choice);
 275     sizerRight->Add(m_choice, 1, wxGROW | wxALL, 5);
 276     sizerRight->SetMinSize(150, 0);
 277     m_sizerChoice = sizerRight; // save it to modify it later
 278
 279     // the 3 panes panes compose the window
 280     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 281     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 282     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 283
 284     // final initializations
 285     Reset();
 286
 287     SetSizer(sizerTop);
 288 }
 289
 290 // ----------------------------------------------------------------------------
 291 // operations
 292 // ----------------------------------------------------------------------------
 293
 294 void ChoiceWidgetsPage::Reset()
 295 {
 296     m_chkSort->SetValue(false);
 297 }
 298
 299 void ChoiceWidgetsPage::CreateChoice()
 300 {
 301     int flags = ms_defaultFlags;
 302
 303     if ( m_chkSort->GetValue() )
 304         flags |= wxCB_SORT;
 305
 306     wxArrayString items;
 307     if ( m_choice )
 308     {
 309         int count = m_choice->GetCount();
 310         for ( int n = 0; n < count; n++ )
 311         {
 312             items.Add(m_choice->GetString(n));
 313         }
 314
 315         m_sizerChoice->Detach( m_choice );
 316         delete m_choice;
 317     }
 318
 319     m_choice = new wxChoice(this, ChoicePage_Choice,
 320                             wxDefaultPosition, wxDefaultSize,
 321                             0, NULL,
 322                             flags);
 323
 324     m_choice->Set(items);
 325     m_sizerChoice->Add(m_choice, 1, wxGROW | wxALL, 5);
 326     m_sizerChoice->Layout();
 327 }
 328
 329 // ----------------------------------------------------------------------------
 330 // event handlers
 331 // ----------------------------------------------------------------------------
 332
 333 void ChoiceWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 334 {
 335     Reset();
 336
 337     CreateChoice();
 338 }
 339
 340 void ChoiceWidgetsPage::OnButtonChange(wxCommandEvent& WXUNUSED(event))
 341 {
 342     int selection = m_choice->GetSelection();
 343     if(selection != wxNOT_FOUND)
 344     {
 345         m_choice->SetString(selection, m_textChange->GetValue());
 346     }
 347 }
 348
 349 void ChoiceWidgetsPage::OnButtonDelete(wxCommandEvent& WXUNUSED(event))
 350 {
 351     unsigned long n;
 352     if ( !m_textDelete->GetValue().ToULong(&n) ||
 353             (n >= (unsigned)m_choice->GetCount()) )
 354     {
 355         return;
 356     }
 357
 358     m_choice->Delete(n);
 359 }
 360
 361 void ChoiceWidgetsPage::OnButtonDeleteSel(wxCommandEvent& WXUNUSED(event))
 362 {
 363     int selection = m_choice->GetSelection();
 364     if(selection != wxNOT_FOUND)
 365     {
 366         m_choice->Delete(selection);
 367     }
 368 }
 369
 370 void ChoiceWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 371 {
 372     m_choice->Clear();
 373 }
 374
 375 void ChoiceWidgetsPage::OnButtonAdd(wxCommandEvent& WXUNUSED(event))
 376 {
 377     static unsigned int s_item = 0;
 378
 379     wxString s = m_textAdd->GetValue();
 380     if ( !m_textAdd->IsModified() )
 381     {
 382         // update the default string
 383         m_textAdd->SetValue(wxString::Format(_T("test item %u"), ++s_item));
 384     }
 385
 386     m_choice->Append(s);
 387 }
 388
 389 void ChoiceWidgetsPage::OnButtonAddMany(wxCommandEvent& WXUNUSED(event))
 390 {
 391     // "many" means 1000 here
 392     wxArrayString strings;
 393     for ( unsigned int n = 0; n < 1000; n++ )
 394     {
 395         strings.Add(wxString::Format(_T("item #%u"), n));
 396     }
 397     m_choice->Append(strings);
 398 }
 399
 400 void ChoiceWidgetsPage::OnButtonAddSeveral(wxCommandEvent& WXUNUSED(event))
 401 {
 402     wxArrayString items;
 403     items.Add(_T("First"));
 404     items.Add(_T("another one"));
 405     items.Add(_T("and the last (very very very very very very very very very very long) one"));
 406     m_choice->Insert(items, 0);
 407 }
 408
 409 void ChoiceWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 410 {
 411     event.Enable( m_chkSort->GetValue() );
 412 }
 413
 414 void ChoiceWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event)
 415 {
 416     unsigned long n;
 417     event.Enable(m_textDelete->GetValue().ToULong(&n) &&
 418                     (n < (unsigned)m_choice->GetCount()));
 419 }
 420
 421 void ChoiceWidgetsPage::OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event)
 422 {
 423     wxArrayInt selections;
 424     event.Enable(m_choice->GetSelection() != wxNOT_FOUND);
 425 }
 426
 427 void ChoiceWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 428 {
 429     event.Enable(m_choice->GetCount() != 0);
 430 }
 431
 432 void ChoiceWidgetsPage::OnUpdateUIAddSeveral(wxUpdateUIEvent& event)
 433 {
 434     event.Enable(!m_choice->HasFlag(wxCB_SORT));
 435 }
 436
 437 void ChoiceWidgetsPage::OnChoice(wxCommandEvent& event)
 438 {
 439     long sel = event.GetSelection();
 440     m_textDelete->SetValue(wxString::Format(_T("%ld"), sel));
 441
 442     if (event.IsSelection())
 443         wxLogMessage(_T("Choice item %ld selected"), sel);
 444     else
 445         wxLogMessage(_T("Choice item %ld deselected"), sel);
 446 }
 447
 448 void ChoiceWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 449 {
 450     CreateChoice();
 451 }
 452
 453 #endif // wxUSE_CHOICE