src/common/rearrangectrl.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/rearrangectrl.cpp
   3 // Purpose:     implementation of classes in wx/rearrangectrl.h
   4 // Author:      Vadim Zeitlin
   5 // Created:     2008-12-15
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // for compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_REARRANGECTRL
  27
  28 #ifndef WX_PRECOMP
  29     #include "wx/button.h"
  30     #include "wx/stattext.h"
  31     #include "wx/sizer.h"
  32 #endif // WX_PRECOMP
  33
  34 #include "wx/rearrangectrl.h"
  35
  36 // ============================================================================
  37 // wxRearrangeList implementation
  38 // ============================================================================
  39
  40 extern
  41 WXDLLIMPEXP_DATA_CORE(const char) wxRearrangeListNameStr[] = "wxRearrangeList";
  42
  43 BEGIN_EVENT_TABLE(wxRearrangeList, wxCheckListBox)
  44     EVT_CHECKLISTBOX(wxID_ANY, wxRearrangeList::OnCheck)
  45 END_EVENT_TABLE()
  46
  47 bool wxRearrangeList::Create(wxWindow *parent,
  48                              wxWindowID id,
  49                              const wxPoint& pos,
  50                              const wxSize& size,
  51                              const wxArrayInt& order,
  52                              const wxArrayString& items,
  53                              long style,
  54                              const wxValidator& validator,
  55                              const wxString& name)
  56 {
  57     // construct the array of items in the order in which they should appear in
  58     // the control
  59     const size_t count = items.size();
  60     wxCHECK_MSG( order.size() == count, false, "arrays not in sync" );
  61
  62     wxArrayString itemsInOrder;
  63     itemsInOrder.reserve(count);
  64     size_t n;
  65     for ( n = 0; n < count; n++ )
  66     {
  67         int idx = order[n];
  68         if ( idx < 0 )
  69             idx = -idx - 1;
  70         itemsInOrder.push_back(items[idx]);
  71     }
  72
  73     // do create the real control
  74     if ( !wxCheckListBox::Create(parent, id, pos, size, itemsInOrder,
  75                                  style, validator, name) )
  76         return false;
  77
  78     // and now check all the items which should be initially checked
  79     for ( n = 0; n < count; n++ )
  80     {
  81         if ( order[n] >= 0 )
  82             Check(n);
  83     }
  84
  85     m_order = order;
  86
  87     return true;
  88 }
  89
  90 bool wxRearrangeList::CanMoveCurrentUp() const
  91 {
  92     const int sel = GetSelection();
  93     return sel != wxNOT_FOUND && sel != 0;
  94 }
  95
  96 bool wxRearrangeList::CanMoveCurrentDown() const
  97 {
  98     const int sel = GetSelection();
  99     return sel != wxNOT_FOUND && static_cast<unsigned>(sel) != GetCount() - 1;
 100 }
 101
 102 bool wxRearrangeList::MoveCurrentUp()
 103 {
 104     const int sel = GetSelection();
 105     if ( sel == wxNOT_FOUND || sel == 0 )
 106         return false;
 107
 108     Swap(sel, sel - 1);
 109     SetSelection(sel - 1);
 110
 111     return true;
 112 }
 113
 114 bool wxRearrangeList::MoveCurrentDown()
 115 {
 116     const int sel = GetSelection();
 117     if ( sel == wxNOT_FOUND || static_cast<unsigned>(sel) == GetCount() - 1 )
 118         return false;
 119
 120     Swap(sel, sel + 1);
 121     SetSelection(sel + 1);
 122
 123     return true;
 124 }
 125
 126 void wxRearrangeList::Swap(int pos1, int pos2)
 127 {
 128     // update the internally stored order
 129     wxSwap(m_order[pos1], m_order[pos2]);
 130
 131
 132     // and now also swap all the attributes of the items
 133
 134     // first the label
 135     const wxString stringTmp = GetString(pos1);
 136     SetString(pos1, GetString(pos2));
 137     SetString(pos2, stringTmp);
 138
 139     // then the checked state
 140     const bool checkedTmp = IsChecked(pos1);
 141     Check(pos1, IsChecked(pos2));
 142     Check(pos2, checkedTmp);
 143
 144     // and finally the client data, if necessary
 145     switch ( GetClientDataType() )
 146     {
 147         case wxClientData_None:
 148             // nothing to do
 149             break;
 150
 151         case wxClientData_Object:
 152             {
 153                 wxClientData * const dataTmp = DetachClientObject(pos1);
 154                 SetClientObject(pos1, DetachClientObject(pos2));
 155                 SetClientObject(pos2, dataTmp);
 156             }
 157             break;
 158
 159         case wxClientData_Void:
 160             {
 161                 void * const dataTmp = GetClientData(pos1);
 162                 SetClientData(pos1, GetClientData(pos2));
 163                 SetClientData(pos2, dataTmp);
 164             }
 165             break;
 166     }
 167 }
 168
 169 void wxRearrangeList::OnCheck(wxCommandEvent& event)
 170 {
 171     // update the internal state to match the new item state
 172     const int n = event.GetInt();
 173
 174     m_order[n] = ~m_order[n];
 175
 176     wxASSERT_MSG( (m_order[n] >= 0) == IsChecked(n),
 177                   "discrepancy between internal state and GUI" );
 178 }
 179
 180 // ============================================================================
 181 // wxRearrangeCtrl implementation
 182 // ============================================================================
 183
 184 BEGIN_EVENT_TABLE(wxRearrangeCtrl, wxPanel)
 185     EVT_UPDATE_UI(wxID_UP, wxRearrangeCtrl::OnUpdateButtonUI)
 186     EVT_UPDATE_UI(wxID_DOWN, wxRearrangeCtrl::OnUpdateButtonUI)
 187
 188     EVT_BUTTON(wxID_UP, wxRearrangeCtrl::OnButton)
 189     EVT_BUTTON(wxID_DOWN, wxRearrangeCtrl::OnButton)
 190 END_EVENT_TABLE()
 191
 192 void wxRearrangeCtrl::Init()
 193 {
 194     m_list = NULL;
 195 }
 196
 197 bool
 198 wxRearrangeCtrl::Create(wxWindow *parent,
 199                         wxWindowID id,
 200                         const wxPoint& pos,
 201                         const wxSize& size,
 202                         const wxArrayInt& order,
 203                         const wxArrayString& items,
 204                         long style,
 205                         const wxValidator& validator,
 206                         const wxString& name)
 207 {
 208     // create all the windows
 209     if ( !wxPanel::Create(parent, id, pos, size, wxTAB_TRAVERSAL, name) )
 210         return false;
 211
 212     m_list = new wxRearrangeList(this, wxID_ANY,
 213                                  wxDefaultPosition, wxDefaultSize,
 214                                  order, items,
 215                                  style, validator);
 216     wxButton * const btnUp = new wxButton(this, wxID_UP);
 217     wxButton * const btnDown = new wxButton(this, wxID_DOWN);
 218
 219     // arrange them in a sizer
 220     wxSizer * const sizerBtns = new wxBoxSizer(wxVERTICAL);
 221     sizerBtns->Add(btnUp, wxSizerFlags().Centre().Border(wxBOTTOM));
 222     sizerBtns->Add(btnDown, wxSizerFlags().Centre().Border(wxTOP));
 223
 224     wxSizer * const sizerTop = new wxBoxSizer(wxHORIZONTAL);
 225     sizerTop->Add(m_list, wxSizerFlags(1).Expand().Border(wxRIGHT));
 226     sizerTop->Add(sizerBtns, wxSizerFlags(0).Centre().Border(wxLEFT));
 227     SetSizer(sizerTop);
 228
 229     m_list->SetFocus();
 230
 231     return true;
 232 }
 233
 234 void wxRearrangeCtrl::OnUpdateButtonUI(wxUpdateUIEvent& event)
 235 {
 236     event.Enable( event.GetId() == wxID_UP ? m_list->CanMoveCurrentUp()
 237                                            : m_list->CanMoveCurrentDown() );
 238 }
 239
 240 void wxRearrangeCtrl::OnButton(wxCommandEvent& event)
 241 {
 242     if ( event.GetId() == wxID_UP )
 243         m_list->MoveCurrentUp();
 244     else
 245         m_list->MoveCurrentDown();
 246 }
 247
 248 // ============================================================================
 249 // wxRearrangeDialog implementation
 250 // ============================================================================
 251
 252 extern
 253 WXDLLIMPEXP_DATA_CORE(const char) wxRearrangeDialogNameStr[] = "wxRearrangeDlg";
 254
 255 namespace
 256 {
 257
 258 enum wxRearrangeDialogSizerPositions
 259 {
 260     Pos_Label,
 261     Pos_Ctrl,
 262     Pos_Buttons,
 263     Pos_Max
 264 };
 265
 266 } // anonymous namespace
 267
 268 bool wxRearrangeDialog::Create(wxWindow *parent,
 269                                const wxString& message,
 270                                const wxString& title,
 271                                const wxArrayInt& order,
 272                                const wxArrayString& items,
 273                                const wxPoint& pos,
 274                                const wxString& name)
 275 {
 276     if ( !wxDialog::Create(parent, wxID_ANY, title,
 277                            pos, wxDefaultSize,
 278                            wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER,
 279                            name) )
 280         return false;
 281
 282     m_ctrl = new wxRearrangeCtrl(this, wxID_ANY, wxDefaultPosition, wxDefaultSize,
 283                                  order, items);
 284
 285     // notice that the items in this sizer should be inserted accordingly to
 286     // wxRearrangeDialogSizerPositions order
 287     wxSizer * const sizerTop = new wxBoxSizer(wxVERTICAL);
 288
 289     if ( !message.empty() )
 290     {
 291         sizerTop->Add(new wxStaticText(this, wxID_ANY, message),
 292                       wxSizerFlags().Border());
 293     }
 294     else
 295     {
 296         // for convenience of other wxRearrangeDialog code that depends on
 297         // positions of sizer items, insert a dummy zero-sized item
 298         sizerTop->AddSpacer(0);
 299     }
 300
 301     sizerTop->Add(m_ctrl,
 302                   wxSizerFlags(1).Expand().Border());
 303     sizerTop->Add(CreateSeparatedButtonSizer(wxOK | wxCANCEL),
 304                   wxSizerFlags().Expand().Border());
 305     SetSizerAndFit(sizerTop);
 306
 307     return true;
 308 }
 309
 310 void wxRearrangeDialog::AddExtraControls(wxWindow *win)
 311 {
 312     wxSizer * const sizer = GetSizer();
 313     wxCHECK_RET( sizer, "the dialog must be created first" );
 314
 315     wxASSERT_MSG( sizer->GetChildren().GetCount() == Pos_Max,
 316                   "calling AddExtraControls() twice?" );
 317
 318     sizer->Insert(Pos_Buttons, win, wxSizerFlags().Expand().Border());
 319
 320     win->MoveAfterInTabOrder(m_ctrl);
 321
 322     // we need to update the initial/minimal window size
 323     sizer->SetSizeHints(this);
 324 }
 325
 326 wxRearrangeList *wxRearrangeDialog::GetList() const
 327 {
 328     wxCHECK_MSG( m_ctrl, NULL, "the dialog must be created first" );
 329
 330     return m_ctrl->GetList();
 331 }
 332
 333 wxArrayInt wxRearrangeDialog::GetOrder() const
 334 {
 335     wxCHECK_MSG( m_ctrl, wxArrayInt(), "the dialog must be created first" );
 336
 337     return m_ctrl->GetList()->GetCurrentOrder();
 338 }
 339
 340 #endif // wxUSE_REARRANGECTRL