include/wx/headerctrl.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/headerctrl.h
   3 // Purpose:     wxHeaderCtrlBase class: interface of wxHeaderCtrl
   4 // Author:      Vadim Zeitlin
   5 // Created:     2008-12-01
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_HEADERCTRL_H_
  12 #define _WX_HEADERCTRL_H_
  13
  14 #include "wx/control.h"
  15
  16 #include "wx/vector.h"
  17
  18 #include "wx/headercol.h"
  19
  20 // notice that the classes in this header are defined in the core library even
  21 // although currently they're only used by wxGrid which is in wxAdv because we
  22 // plan to use it in wxListCtrl which is in core too in the future
  23
  24 // ----------------------------------------------------------------------------
  25 // constants
  26 // ----------------------------------------------------------------------------
  27
  28 enum
  29 {
  30     // allow column drag and drop
  31     wxHD_DRAGDROP = 0x0001,
  32
  33     // style used by default when creating the control
  34     wxHD_DEFAULT_STYLE = wxHD_DRAGDROP
  35 };
  36
  37 extern WXDLLIMPEXP_DATA_CORE(const char) wxHeaderCtrlNameStr[];
  38
  39 // ----------------------------------------------------------------------------
  40 // wxHeaderCtrlBase defines the interface of a header control
  41 // ----------------------------------------------------------------------------
  42
  43 class WXDLLIMPEXP_CORE wxHeaderCtrlBase : public wxControl
  44 {
  45 public:
  46     /*
  47         Derived classes must provide default ctor as well as a ctor and
  48         Create() function with the following signatures:
  49
  50     wxHeaderCtrl(wxWindow *parent,
  51                  wxWindowID winid = wxID_ANY,
  52                  const wxPoint& pos = wxDefaultPosition,
  53                  const wxSize& size = wxDefaultSize,
  54                  long style = wxHD_DEFAULT_STYLE,
  55                  const wxString& name = wxHeaderCtrlNameStr);
  56
  57     bool Create(wxWindow *parent,
  58                 wxWindowID winid = wxID_ANY,
  59                 const wxPoint& pos = wxDefaultPosition,
  60                 const wxSize& size = wxDefaultSize,
  61                 long style = wxHD_DEFAULT_STYLE,
  62                 const wxString& name = wxHeaderCtrlNameStr);
  63      */
  64
  65     // column-related methods
  66     // ----------------------
  67
  68     // set the number of columns in the control
  69     //
  70     // this also calls UpdateColumn() for all columns
  71     void SetColumnCount(unsigned int count) { DoSetCount(count); }
  72
  73     // return the number of columns in the control as set by SetColumnCount()
  74     unsigned int GetColumnCount() const { return DoGetCount(); }
  75
  76     // return whether the control has any columns
  77     bool IsEmpty() const { return DoGetCount() == 0; }
  78
  79     // update the column with the given index
  80     void UpdateColumn(unsigned int idx)
  81     {
  82         wxCHECK_RET( idx < GetColumnCount(), "invalid column index" );
  83
  84         DoUpdate(idx);
  85     }
  86
  87
  88     // implementation only from now on
  89     // -------------------------------
  90
  91     // the user doesn't need to TAB to this control
  92     virtual bool AcceptsFocusFromKeyboard() const { return false; }
  93
  94     // this method is only overridden in order to synchronize the control with
  95     // the main window when it is scrolled, the derived class must implement
  96     // DoScrollHorz()
  97     virtual void ScrollWindow(int dx, int dy, const wxRect *rect = NULL);
  98
  99 protected:
 100     // this method must be implemented by the derived classes to return the
 101     // information for the given column
 102     virtual wxHeaderColumnBase& GetColumn(unsigned int idx) = 0;
 103
 104 private:
 105     // methods implementing our public API and defined in platform-specific
 106     // implementations
 107     virtual void DoSetCount(unsigned int count) = 0;
 108     virtual unsigned int DoGetCount() const = 0;
 109     virtual void DoUpdate(unsigned int idx) = 0;
 110
 111     virtual void DoScrollHorz(int dx) = 0;
 112
 113     // this window doesn't look nice with the border so don't use it by default
 114     virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
 115 };
 116
 117 // ----------------------------------------------------------------------------
 118 // wxHeaderCtrl: port-specific header control implementation, notice that this
 119 //               is still an ABC which is meant to be used as part of another
 120 //               control, see wxHeaderCtrlSimple for a standalone version
 121 // ----------------------------------------------------------------------------
 122
 123 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 124     #include "wx/msw/headerctrl.h"
 125 #else
 126     #define wxHAS_GENERIC_HEADERCTRL
 127     #include "wx/generic/headerctrlg.h"
 128 #endif // platform
 129
 130 // ----------------------------------------------------------------------------
 131 // wxHeaderCtrlSimple: concrete header control which can be used standalone
 132 // ----------------------------------------------------------------------------
 133
 134 class WXDLLIMPEXP_CORE wxHeaderCtrlSimple : public wxHeaderCtrl
 135 {
 136 public:
 137     // control creation
 138     // ----------------
 139
 140     wxHeaderCtrlSimple() { Init(); }
 141     wxHeaderCtrlSimple(wxWindow *parent,
 142                        wxWindowID winid = wxID_ANY,
 143                        const wxPoint& pos = wxDefaultPosition,
 144                        const wxSize& size = wxDefaultSize,
 145                        long style = wxHD_DEFAULT_STYLE,
 146                        const wxString& name = wxHeaderCtrlNameStr)
 147     {
 148         Init();
 149
 150         Create(parent, winid, pos, size, style, name);
 151     }
 152
 153     // managing the columns
 154     // --------------------
 155
 156     // insert the column at the given position, using GetColumnCount() as
 157     // position appends it at the end
 158     void InsertColumn(const wxHeaderColumnSimple& col, unsigned int idx)
 159     {
 160         wxCHECK_RET( idx <= GetColumnCount(), "invalid column index" );
 161
 162         DoInsert(col, idx);
 163     }
 164
 165     // append the column to the end of the control
 166     void AppendColumn(const wxHeaderColumnSimple& col)
 167     {
 168         DoInsert(col, GetColumnCount());
 169     }
 170
 171     // delete the column at the given index
 172     void DeleteColumn(unsigned int idx)
 173     {
 174         wxCHECK_RET( idx < GetColumnCount(), "invalid column index" );
 175
 176         DoDelete(idx);
 177     }
 178
 179     // delete all the existing columns
 180     void DeleteAllColumns();
 181
 182
 183     // modifying columns
 184     // -----------------
 185
 186     // show or hide the column, notice that even when a column is hidden we
 187     // still account for it when using indices
 188     void ShowColumn(unsigned int idx, bool show = true)
 189     {
 190         wxCHECK_RET( idx < GetColumnCount(), "invalid column index" );
 191
 192         DoShowColumn(idx, show);
 193     }
 194
 195     void HideColumn(unsigned int idx)
 196     {
 197         ShowColumn(idx, false);
 198     }
 199
 200     // indicate that the column is used for sorting
 201     void ShowSortIndicator(unsigned int idx, bool ascending = true)
 202     {
 203         wxCHECK_RET( idx < GetColumnCount(), "invalid column index" );
 204
 205         DoShowSortIndicator(idx, ascending);
 206     }
 207
 208     // remove the sort indicator completely
 209     void RemoveSortIndicator();
 210
 211 protected:
 212     virtual wxHeaderColumnBase& GetColumn(unsigned int idx);
 213
 214 private:
 215     // functions implementing our public API
 216     void DoInsert(const wxHeaderColumnSimple& col, unsigned int idx);
 217     void DoDelete(unsigned int idx);
 218     void DoShowColumn(unsigned int idx, bool show);
 219     void DoShowSortIndicator(unsigned int idx, bool ascending);
 220
 221     // common part of all ctors
 222     void Init();
 223
 224     // bring the column count in sync with the number of columns we store
 225     void UpdateColumnCount() { SetColumnCount(m_cols.size()); }
 226
 227
 228     // all our current columns
 229     typedef wxVector<wxHeaderColumnSimple> Columns;
 230     Columns m_cols;
 231
 232     // the column currently used for sorting or -1 if none
 233     unsigned int m_sortKey;
 234
 235
 236     DECLARE_NO_COPY_CLASS(wxHeaderCtrlSimple)
 237 };
 238
 239 #endif // _WX_HEADERCTRL_H_