include/wx/generic/dataview.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/generic/dataview.h
   3 // Purpose:     wxDataViewCtrl generic implementation header
   4 // Author:      Robert Roebling
   5 // Modified By: Bo Yang
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef __GENERICDATAVIEWCTRLH__
  11 #define __GENERICDATAVIEWCTRLH__
  12
  13 #include "wx/defs.h"
  14 #include "wx/object.h"
  15 #include "wx/list.h"
  16 #include "wx/control.h"
  17 #include "wx/scrolwin.h"
  18 #include "wx/icon.h"
  19 #include "wx/vector.h"
  20
  21 class WXDLLIMPEXP_FWD_ADV wxDataViewMainWindow;
  22 class WXDLLIMPEXP_FWD_ADV wxDataViewHeaderWindow;
  23
  24 // ---------------------------------------------------------
  25 // wxDataViewColumn
  26 // ---------------------------------------------------------
  27
  28 class WXDLLIMPEXP_ADV wxDataViewColumn : public wxDataViewColumnBase
  29 {
  30 public:
  31     wxDataViewColumn(const wxString& title,
  32                      wxDataViewRenderer *renderer,
  33                      unsigned int model_column,
  34                      int width = wxDVC_DEFAULT_WIDTH,
  35                      wxAlignment align = wxALIGN_CENTER,
  36                      int flags = wxDATAVIEW_COL_RESIZABLE)
  37         : wxDataViewColumnBase(renderer, model_column),
  38           m_title(title)
  39     {
  40         Init(width, align, flags);
  41     }
  42
  43     wxDataViewColumn(const wxBitmap& bitmap,
  44                      wxDataViewRenderer *renderer,
  45                      unsigned int model_column,
  46                      int width = wxDVC_DEFAULT_WIDTH,
  47                      wxAlignment align = wxALIGN_CENTER,
  48                      int flags = wxDATAVIEW_COL_RESIZABLE)
  49         : wxDataViewColumnBase(bitmap, renderer, model_column)
  50     {
  51         Init(width, align, flags);
  52     }
  53
  54     // implement wxHeaderColumnBase methods
  55     virtual void SetTitle(const wxString& title) { m_title = title; UpdateDisplay(); }
  56     virtual wxString GetTitle() const { return m_title; }
  57
  58     virtual void SetWidth(int width) { m_width = width; UpdateDisplay(); }
  59     virtual int GetWidth() const;
  60
  61     virtual void SetMinWidth(int minWidth) { m_minWidth = minWidth; UpdateDisplay(); }
  62     virtual int GetMinWidth() const { return m_minWidth; }
  63
  64     virtual void SetAlignment(wxAlignment align) { m_align = align; UpdateDisplay(); }
  65     virtual wxAlignment GetAlignment() const { return m_align; }
  66
  67     virtual void SetFlags(int flags) { m_flags = flags; UpdateDisplay(); }
  68     virtual int GetFlags() const { return m_flags; }
  69
  70     virtual bool IsSortKey() const { return m_sort; }
  71
  72     virtual void UnsetAsSortKey();
  73
  74     virtual void SetSortOrder(bool ascending);
  75
  76     virtual bool IsSortOrderAscending() const { return m_sortAscending; }
  77
  78     virtual void SetBitmap( const wxBitmap& bitmap ) { wxDataViewColumnBase::SetBitmap(bitmap); UpdateDisplay(); }
  79
  80
  81 private:
  82     // common part of all ctors
  83     void Init(int width, wxAlignment align, int flags);
  84
  85     void UpdateDisplay();
  86
  87     wxString m_title;
  88     int m_width,
  89         m_minWidth;
  90     wxAlignment m_align;
  91     int m_flags;
  92     bool m_sort,
  93          m_sortAscending;
  94
  95     friend class wxDataViewHeaderWindowBase;
  96     friend class wxDataViewHeaderWindow;
  97     friend class wxDataViewHeaderWindowMSW;
  98 };
  99
 100 // ---------------------------------------------------------
 101 // wxDataViewCtrl
 102 // ---------------------------------------------------------
 103
 104 WX_DECLARE_LIST_WITH_DECL(wxDataViewColumn, wxDataViewColumnList,
 105                           class WXDLLIMPEXP_ADV);
 106
 107 class WXDLLIMPEXP_ADV wxDataViewCtrl : public wxDataViewCtrlBase,
 108                                        public wxScrollHelper
 109 {
 110     friend class wxDataViewMainWindow;
 111     friend class wxDataViewHeaderWindowBase;
 112     friend class wxDataViewHeaderWindow;
 113     friend class wxDataViewHeaderWindowMSW;
 114     friend class wxDataViewColumn;
 115
 116 public:
 117     wxDataViewCtrl() : wxScrollHelper(this)
 118     {
 119         Init();
 120     }
 121
 122     wxDataViewCtrl( wxWindow *parent, wxWindowID id,
 123            const wxPoint& pos = wxDefaultPosition,
 124            const wxSize& size = wxDefaultSize, long style = 0,
 125            const wxValidator& validator = wxDefaultValidator,
 126            const wxString& name = wxDataViewCtrlNameStr )
 127              : wxScrollHelper(this)
 128     {
 129         Create(parent, id, pos, size, style, validator, name);
 130     }
 131
 132     virtual ~wxDataViewCtrl();
 133
 134     void Init();
 135
 136     bool Create(wxWindow *parent, wxWindowID id,
 137                 const wxPoint& pos = wxDefaultPosition,
 138                 const wxSize& size = wxDefaultSize, long style = 0,
 139                 const wxValidator& validator = wxDefaultValidator,
 140                 const wxString& name = wxDataViewCtrlNameStr);
 141
 142     virtual bool AssociateModel( wxDataViewModel *model );
 143
 144     virtual bool AppendColumn( wxDataViewColumn *col );
 145     virtual bool PrependColumn( wxDataViewColumn *col );
 146     virtual bool InsertColumn( unsigned int pos, wxDataViewColumn *col );
 147
 148     virtual void DoSetExpanderColumn();
 149     virtual void DoSetIndent();
 150
 151     virtual unsigned int GetColumnCount() const;
 152     virtual wxDataViewColumn* GetColumn( unsigned int pos ) const;
 153     virtual bool DeleteColumn( wxDataViewColumn *column );
 154     virtual bool ClearColumns();
 155     virtual int GetColumnPosition( const wxDataViewColumn *column ) const;
 156
 157     virtual wxDataViewColumn *GetSortingColumn() const;
 158
 159     virtual int GetSelectedItemsCount() const;
 160     virtual int GetSelections( wxDataViewItemArray & sel ) const;
 161     virtual void SetSelections( const wxDataViewItemArray & sel );
 162     virtual void Select( const wxDataViewItem & item );
 163     virtual void Unselect( const wxDataViewItem & item );
 164     virtual bool IsSelected( const wxDataViewItem & item ) const;
 165
 166     virtual void SelectAll();
 167     virtual void UnselectAll();
 168
 169     virtual void EnsureVisible( const wxDataViewItem & item,
 170                                 const wxDataViewColumn *column = NULL );
 171     virtual void HitTest( const wxPoint & point, wxDataViewItem & item,
 172                           wxDataViewColumn* &column ) const;
 173     virtual wxRect GetItemRect( const wxDataViewItem & item,
 174                                 const wxDataViewColumn *column = NULL ) const;
 175
 176     virtual bool SetRowHeight( int rowHeight );
 177
 178     virtual void Expand( const wxDataViewItem & item );
 179     virtual void Collapse( const wxDataViewItem & item );
 180     virtual bool IsExpanded( const wxDataViewItem & item ) const;
 181
 182     virtual void SetFocus();
 183
 184     virtual bool SetFont(const wxFont & font);
 185
 186 #if wxUSE_DRAG_AND_DROP
 187     virtual bool EnableDragSource( const wxDataFormat &format );
 188     virtual bool EnableDropTarget( const wxDataFormat &format );
 189 #endif // wxUSE_DRAG_AND_DROP
 190
 191     virtual wxBorder GetDefaultBorder() const;
 192
 193     virtual void EditItem(const wxDataViewItem& item, const wxDataViewColumn *column);
 194
 195     // These methods are specific to generic wxDataViewCtrl implementation and
 196     // should not be used in portable code.
 197     wxColour GetAlternateRowColour() const { return m_alternateRowColour; }
 198     void SetAlternateRowColour(const wxColour& colour);
 199
 200 protected:
 201     virtual void EnsureVisible( int row, int column );
 202
 203     // Notice that row here may be invalid (i.e. >= GetRowCount()), this is not
 204     // an error and this function simply returns an invalid item in this case.
 205     virtual wxDataViewItem GetItemByRow( unsigned int row ) const;
 206     virtual int GetRowByItem( const wxDataViewItem & item ) const;
 207
 208     int GetSortingColumnIndex() const { return m_sortingColumnIdx; }
 209     void SetSortingColumnIndex(int idx) { m_sortingColumnIdx = idx; }
 210
 211 public:     // utility functions not part of the API
 212
 213     // returns the "best" width for the idx-th column
 214     unsigned int GetBestColumnWidth(int idx) const;
 215
 216     // called by header window after reorder
 217     void ColumnMoved( wxDataViewColumn* col, unsigned int new_pos );
 218
 219     // update the display after a change to an individual column
 220     void OnColumnChange(unsigned int idx);
 221
 222     // update after a change to the number of columns
 223     void OnColumnsCountChanged();
 224
 225     wxWindow *GetMainWindow() { return (wxWindow*) m_clientArea; }
 226
 227     // return the index of the given column in m_cols
 228     int GetColumnIndex(const wxDataViewColumn *column) const;
 229
 230     // return the column displayed at the given position in the control
 231     wxDataViewColumn *GetColumnAt(unsigned int pos) const;
 232
 233     virtual wxDataViewColumn *GetCurrentColumn() const;
 234
 235     virtual void OnInternalIdle();
 236
 237 private:
 238     virtual wxDataViewItem DoGetCurrentItem() const;
 239     virtual void DoSetCurrentItem(const wxDataViewItem& item);
 240
 241     void InvalidateColBestWidths();
 242     void InvalidateColBestWidth(int idx);
 243     void UpdateColWidths();
 244
 245     wxDataViewColumnList      m_cols;
 246     // cached column best widths information, values are for
 247     // respective columns from m_cols and the arrays have same size
 248     struct CachedColWidthInfo
 249     {
 250         CachedColWidthInfo() : width(0), dirty(true) {}
 251         int width;  // cached width or 0 if not computed
 252         bool dirty; // column was invalidated, header needs updating
 253     };
 254     wxVector<CachedColWidthInfo> m_colsBestWidths;
 255     // This indicates that at least one entry in m_colsBestWidths has 'dirty'
 256     // flag set. It's cheaper to check one flag in OnInternalIdle() than to
 257     // iterate over m_colsBestWidths to check if anything needs to be done.
 258     bool                      m_colsDirty;
 259
 260     wxDataViewModelNotifier  *m_notifier;
 261     wxDataViewMainWindow     *m_clientArea;
 262     wxDataViewHeaderWindow   *m_headerArea;
 263
 264     // user defined color to draw row lines, may be invalid
 265     wxColour m_alternateRowColour;
 266
 267     // the index of the column currently used for sorting or -1
 268     int m_sortingColumnIdx;
 269
 270 private:
 271     void OnSize( wxSizeEvent &event );
 272     virtual wxSize GetSizeAvailableForScrollTarget(const wxSize& size);
 273
 274     // we need to return a special WM_GETDLGCODE value to process just the
 275     // arrows but let the other navigation characters through
 276 #ifdef __WXMSW__
 277     virtual WXLRESULT MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 278 #endif // __WXMSW__
 279
 280     WX_FORWARD_TO_SCROLL_HELPER()
 281
 282 private:
 283     DECLARE_DYNAMIC_CLASS(wxDataViewCtrl)
 284     wxDECLARE_NO_COPY_CLASS(wxDataViewCtrl);
 285     DECLARE_EVENT_TABLE()
 286 };
 287
 288
 289 #endif // __GENERICDATAVIEWCTRLH__