src/generic/choicbkg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/choicbkg.cpp
   3 // Purpose:     generic implementation of wxChoicebook
   4 // Author:      Vadim Zeitlin
   5 // Modified by: Wlodzimierz ABX Skiba from generic/listbkg.cpp
   6 // Created:     15.09.04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin, Wlodzimierz Skiba
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_CHOICEBOOK
  28
  29 #include "wx/choice.h"
  30 #include "wx/choicebk.h"
  31 #include "wx/imaglist.h"
  32 #include "wx/settings.h"
  33 #include "wx/sizer.h"
  34
  35 // ----------------------------------------------------------------------------
  36 // various wxWidgets macros
  37 // ----------------------------------------------------------------------------
  38
  39 // check that the page index is valid
  40 #define IS_VALID_PAGE(nPage) ((nPage) < GetPageCount())
  41
  42 // ----------------------------------------------------------------------------
  43 // event table
  44 // ----------------------------------------------------------------------------
  45
  46 IMPLEMENT_DYNAMIC_CLASS(wxChoicebook, wxBookCtrlBase)
  47 IMPLEMENT_DYNAMIC_CLASS(wxChoicebookEvent, wxNotifyEvent)
  48
  49 const wxEventType wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGING = wxNewEventType();
  50 const wxEventType wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGED = wxNewEventType();
  51 const int wxID_CHOICEBOOKCHOICE = wxNewId();
  52
  53 BEGIN_EVENT_TABLE(wxChoicebook, wxBookCtrlBase)
  54     EVT_CHOICE(wxID_CHOICEBOOKCHOICE, wxChoicebook::OnChoiceSelected)
  55 END_EVENT_TABLE()
  56
  57 // ============================================================================
  58 // wxChoicebook implementation
  59 // ============================================================================
  60
  61 // ----------------------------------------------------------------------------
  62 // wxChoicebook creation
  63 // ----------------------------------------------------------------------------
  64
  65 void wxChoicebook::Init()
  66 {
  67     m_selection = wxNOT_FOUND;
  68 }
  69
  70 bool
  71 wxChoicebook::Create(wxWindow *parent,
  72                      wxWindowID id,
  73                      const wxPoint& pos,
  74                      const wxSize& size,
  75                      long style,
  76                      const wxString& name)
  77 {
  78     if ( (style & wxBK_ALIGN_MASK) == wxBK_DEFAULT )
  79     {
  80         style |= wxBK_TOP;
  81     }
  82
  83     // no border for this control, it doesn't look nice together with
  84     // wxChoice border
  85     style &= ~wxBORDER_MASK;
  86     style |= wxBORDER_NONE;
  87
  88     if ( !wxControl::Create(parent, id, pos, size, style,
  89                             wxDefaultValidator, name) )
  90         return false;
  91
  92     m_bookctrl = new wxChoice
  93                  (
  94                     this,
  95                     wxID_CHOICEBOOKCHOICE,
  96                     wxDefaultPosition,
  97                     wxDefaultSize
  98                  );
  99
 100     wxSizer* mainSizer = new wxBoxSizer(IsVertical() ? wxVERTICAL : wxHORIZONTAL);
 101
 102     if (style & wxCHB_RIGHT || style & wxCHB_BOTTOM)
 103         mainSizer->Add(0, 0, 1, wxEXPAND, 0);
 104
 105     m_controlSizer = new wxBoxSizer(IsVertical() ? wxHORIZONTAL : wxVERTICAL);
 106     m_controlSizer->Add(m_bookctrl, 1, (IsVertical() ? wxALIGN_CENTRE_VERTICAL : wxALIGN_CENTRE) |wxGROW, 0);
 107     mainSizer->Add(m_controlSizer, 0, wxGROW|wxALL, m_controlMargin);
 108     SetSizer(mainSizer);
 109     return true;
 110 }
 111
 112 // ----------------------------------------------------------------------------
 113 // wxChoicebook geometry management
 114 // ----------------------------------------------------------------------------
 115
 116 wxSize wxChoicebook::GetControllerSize() const
 117 {
 118     const wxSize sizeClient = GetClientSize(),
 119                  // sizeChoice = m_bookctrl->GetBestFittingSize();
 120                  sizeChoice = m_controlSizer->CalcMin();
 121
 122     wxSize size;
 123     if ( IsVertical() )
 124     {
 125         size.x = sizeClient.x;
 126         size.y = sizeChoice.y;
 127     }
 128     else // left/right aligned
 129     {
 130         size.x = sizeChoice.x;
 131         size.y = sizeClient.y;
 132     }
 133
 134     return size;
 135 }
 136
 137 wxSize wxChoicebook::CalcSizeFromPage(const wxSize& sizePage) const
 138 {
 139     // we need to add the size of the choice control and the border between
 140     const wxSize sizeChoice = GetControllerSize();
 141
 142     wxSize size = sizePage;
 143     if ( IsVertical() )
 144     {
 145         size.y += sizeChoice.y + GetInternalBorder();
 146     }
 147     else // left/right aligned
 148     {
 149         size.x += sizeChoice.x + GetInternalBorder();
 150     }
 151
 152     return size;
 153 }
 154
 155
 156 // ----------------------------------------------------------------------------
 157 // accessing the pages
 158 // ----------------------------------------------------------------------------
 159
 160 bool wxChoicebook::SetPageText(size_t n, const wxString& strText)
 161 {
 162     GetChoiceCtrl()->SetString(n, strText);
 163
 164     return true;
 165 }
 166
 167 wxString wxChoicebook::GetPageText(size_t n) const
 168 {
 169     return GetChoiceCtrl()->GetString(n);
 170 }
 171
 172 int wxChoicebook::GetPageImage(size_t WXUNUSED(n)) const
 173 {
 174     wxFAIL_MSG( _T("wxChoicebook::GetPageImage() not implemented") );
 175
 176     return wxNOT_FOUND;
 177 }
 178
 179 bool wxChoicebook::SetPageImage(size_t WXUNUSED(n), int WXUNUSED(imageId))
 180 {
 181     wxFAIL_MSG( _T("wxChoicebook::SetPageImage() not implemented") );
 182
 183     return false;
 184 }
 185
 186 // ----------------------------------------------------------------------------
 187 // image list stuff
 188 // ----------------------------------------------------------------------------
 189
 190 void wxChoicebook::SetImageList(wxImageList *imageList)
 191 {
 192     // TODO: can be implemented in form of static bitmap near choice control
 193
 194     wxBookCtrlBase::SetImageList(imageList);
 195 }
 196
 197 // ----------------------------------------------------------------------------
 198 // selection
 199 // ----------------------------------------------------------------------------
 200
 201 int wxChoicebook::GetSelection() const
 202 {
 203     return m_selection;
 204 }
 205
 206 int wxChoicebook::SetSelection(size_t n)
 207 {
 208     wxCHECK_MSG( IS_VALID_PAGE(n), wxNOT_FOUND,
 209                  wxT("invalid page index in wxChoicebook::SetSelection()") );
 210
 211     const int oldSel = m_selection;
 212
 213     if ( int(n) != m_selection )
 214     {
 215         wxChoicebookEvent event(wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGING, m_windowId);
 216         event.SetSelection(n);
 217         event.SetOldSelection(m_selection);
 218         event.SetEventObject(this);
 219         if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
 220         {
 221             if ( m_selection != wxNOT_FOUND )
 222                 m_pages[m_selection]->Hide();
 223
 224             wxWindow *page = m_pages[n];
 225             page->SetSize(GetPageRect());
 226             page->Show();
 227
 228             // change m_selection now to ignore the selection change event
 229             m_selection = n;
 230             GetChoiceCtrl()->Select(n);
 231
 232             // program allows the page change
 233             event.SetEventType(wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGED);
 234             (void)GetEventHandler()->ProcessEvent(event);
 235         }
 236     }
 237
 238     return oldSel;
 239 }
 240
 241 // ----------------------------------------------------------------------------
 242 // adding/removing the pages
 243 // ----------------------------------------------------------------------------
 244
 245 bool
 246 wxChoicebook::InsertPage(size_t n,
 247                          wxWindow *page,
 248                          const wxString& text,
 249                          bool bSelect,
 250                          int imageId)
 251 {
 252     if ( !wxBookCtrlBase::InsertPage(n, page, text, bSelect, imageId) )
 253         return false;
 254
 255     GetChoiceCtrl()->Insert(text, n);
 256
 257     // if the inserted page is before the selected one, we must update the
 258     // index of the selected page
 259     if ( int(n) <= m_selection )
 260     {
 261         // one extra page added
 262         m_selection++;
 263         GetChoiceCtrl()->Select(m_selection);
 264     }
 265
 266     // some page should be selected: either this one or the first one if there
 267     // is still no selection
 268     int selNew = wxNOT_FOUND;
 269     if ( bSelect )
 270         selNew = n;
 271     else if ( m_selection == wxNOT_FOUND )
 272         selNew = 0;
 273
 274     if ( selNew != m_selection )
 275         page->Hide();
 276
 277     if ( selNew != wxNOT_FOUND )
 278         SetSelection(selNew);
 279
 280     InvalidateBestSize();
 281     return true;
 282 }
 283
 284 wxWindow *wxChoicebook::DoRemovePage(size_t page)
 285 {
 286     const size_t page_count = GetPageCount();
 287     wxWindow *win = wxBookCtrlBase::DoRemovePage(page);
 288
 289     if ( win )
 290     {
 291         GetChoiceCtrl()->Delete(page);
 292
 293         if (m_selection >= (int)page)
 294         {
 295             // force new sel valid if possible
 296             int sel = m_selection - 1;
 297             if (page_count == 1)
 298                 sel = wxNOT_FOUND;
 299             else if ((page_count == 2) || (sel == -1))
 300                 sel = 0;
 301
 302             // force sel invalid if deleting current page - don't try to hide it
 303             m_selection = (m_selection == (int)page) ? wxNOT_FOUND : m_selection - 1;
 304
 305             if ((sel != wxNOT_FOUND) && (sel != m_selection))
 306                 SetSelection(sel);
 307            }
 308     }
 309
 310     return win;
 311 }
 312
 313
 314 bool wxChoicebook::DeleteAllPages()
 315 {
 316     GetChoiceCtrl()->Clear();
 317     return wxBookCtrlBase::DeleteAllPages();
 318 }
 319
 320 // ----------------------------------------------------------------------------
 321 // wxChoicebook events
 322 // ----------------------------------------------------------------------------
 323
 324 void wxChoicebook::OnChoiceSelected(wxCommandEvent& eventChoice)
 325 {
 326     const int selNew = eventChoice.GetSelection();
 327
 328     if ( selNew == m_selection )
 329     {
 330         // this event can only come from our own Select(m_selection) below
 331         // which we call when the page change is vetoed, so we should simply
 332         // ignore it
 333         return;
 334     }
 335
 336     SetSelection(selNew);
 337
 338     // change wasn't allowed, return to previous state
 339     if (m_selection != selNew)
 340         GetChoiceCtrl()->Select(m_selection);
 341 }
 342
 343 #endif // wxUSE_CHOICEBOOK