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