include/wx/listbase.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/listctrl.h
   3 // Purpose:     wxListCtrl class
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     04.12.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_LISTBASE_H_BASE_
  13 #define _WX_LISTBASE_H_BASE_
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_LISTCTRL
  18
  19 #include "wx/colour.h"
  20 #include "wx/font.h"
  21 #include "wx/gdicmn.h"
  22
  23 #include "wx/event.h"
  24
  25 // ----------------------------------------------------------------------------
  26 // types
  27 // ----------------------------------------------------------------------------
  28
  29 // type of compare function for wxListCtrl sort operation
  30 typedef int (wxCALLBACK *wxListCtrlCompare)(long item1, long item2, long sortData);
  31
  32 // ----------------------------------------------------------------------------
  33 // wxListCtrl constants
  34 // ----------------------------------------------------------------------------
  35
  36 // style flags
  37 #define wxLC_VRULES          0x0001
  38 #define wxLC_HRULES          0x0002
  39
  40 #define wxLC_ICON            0x0004
  41 #define wxLC_SMALL_ICON      0x0008
  42 #define wxLC_LIST            0x0010
  43 #define wxLC_REPORT          0x0020
  44
  45 #define wxLC_ALIGN_TOP       0x0040
  46 #define wxLC_ALIGN_LEFT      0x0080
  47 #define wxLC_AUTOARRANGE     0x0100
  48 #define wxLC_VIRTUAL         0x0200
  49 #define wxLC_EDIT_LABELS     0x0400
  50 #define wxLC_NO_HEADER       0x0800
  51 #define wxLC_NO_SORT_HEADER  0x1000
  52 #define wxLC_SINGLE_SEL      0x2000
  53 #define wxLC_SORT_ASCENDING  0x4000
  54 #define wxLC_SORT_DESCENDING 0x8000
  55
  56 #define wxLC_MASK_TYPE       (wxLC_ICON | wxLC_SMALL_ICON | wxLC_LIST | wxLC_REPORT)
  57 #define wxLC_MASK_ALIGN      (wxLC_ALIGN_TOP | wxLC_ALIGN_LEFT)
  58 #define wxLC_MASK_SORT       (wxLC_SORT_ASCENDING | wxLC_SORT_DESCENDING)
  59
  60 // for compatibility only
  61 #define wxLC_USER_TEXT       wxLC_VIRTUAL
  62
  63 // Omitted because
  64 //  (a) too much detail
  65 //  (b) not enough style flags
  66 //  (c) not implemented anyhow in the generic version
  67 //
  68 // #define wxLC_NO_SCROLL
  69 // #define wxLC_NO_LABEL_WRAP
  70 // #define wxLC_OWNERDRAW_FIXED
  71 // #define wxLC_SHOW_SEL_ALWAYS
  72
  73 // Mask flags to tell app/GUI what fields of wxListItem are valid
  74 #define wxLIST_MASK_STATE           0x0001
  75 #define wxLIST_MASK_TEXT            0x0002
  76 #define wxLIST_MASK_IMAGE           0x0004
  77 #define wxLIST_MASK_DATA            0x0008
  78 #define wxLIST_SET_ITEM             0x0010
  79 #define wxLIST_MASK_WIDTH           0x0020
  80 #define wxLIST_MASK_FORMAT          0x0040
  81
  82 // State flags for indicating the state of an item
  83 #define wxLIST_STATE_DONTCARE       0x0000
  84 #define wxLIST_STATE_DROPHILITED    0x0001      // MSW only
  85 #define wxLIST_STATE_FOCUSED        0x0002
  86 #define wxLIST_STATE_SELECTED       0x0004
  87 #define wxLIST_STATE_CUT            0x0008      // MSW only
  88 #define wxLIST_STATE_DISABLED       0x0010      // OS2 only
  89 #define wxLIST_STATE_FILTERED       0x0020      // OS2 only
  90 #define wxLIST_STATE_INUSE          0x0040      // OS2 only
  91 #define wxLIST_STATE_PICKED         0x0080      // OS2 only
  92 #define wxLIST_STATE_SOURCE         0x0100      // OS2 only
  93
  94 // Hit test flags, used in HitTest
  95 #define wxLIST_HITTEST_ABOVE            0x0001  // Above the client area.
  96 #define wxLIST_HITTEST_BELOW            0x0002  // Below the client area.
  97 #define wxLIST_HITTEST_NOWHERE          0x0004  // In the client area but below the last item.
  98 #define wxLIST_HITTEST_ONITEMICON       0x0020  // On the bitmap associated with an item.
  99 #define wxLIST_HITTEST_ONITEMLABEL      0x0080  // On the label (string) associated with an item.
 100 #define wxLIST_HITTEST_ONITEMRIGHT      0x0100  // In the area to the right of an item.
 101 #define wxLIST_HITTEST_ONITEMSTATEICON  0x0200  // On the state icon for a tree view item that is in a user-defined state.
 102 #define wxLIST_HITTEST_TOLEFT           0x0400  // To the left of the client area.
 103 #define wxLIST_HITTEST_TORIGHT          0x0800  // To the right of the client area.
 104
 105 #define wxLIST_HITTEST_ONITEM (wxLIST_HITTEST_ONITEMICON | wxLIST_HITTEST_ONITEMLABEL | wxLIST_HITTEST_ONITEMSTATEICON)
 106
 107 // Flags for GetNextItem (MSW only except wxLIST_NEXT_ALL)
 108 enum
 109 {
 110     wxLIST_NEXT_ABOVE,          // Searches for an item above the specified item
 111     wxLIST_NEXT_ALL,            // Searches for subsequent item by index
 112     wxLIST_NEXT_BELOW,          // Searches for an item below the specified item
 113     wxLIST_NEXT_LEFT,           // Searches for an item to the left of the specified item
 114     wxLIST_NEXT_RIGHT           // Searches for an item to the right of the specified item
 115 };
 116
 117 // Alignment flags for Arrange (MSW only except wxLIST_ALIGN_LEFT)
 118 enum
 119 {
 120     wxLIST_ALIGN_DEFAULT,
 121     wxLIST_ALIGN_LEFT,
 122     wxLIST_ALIGN_TOP,
 123     wxLIST_ALIGN_SNAP_TO_GRID
 124 };
 125
 126 // Column format (MSW only except wxLIST_FORMAT_LEFT)
 127 enum wxListColumnFormat
 128 {
 129     wxLIST_FORMAT_LEFT,
 130     wxLIST_FORMAT_RIGHT,
 131     wxLIST_FORMAT_CENTRE,
 132     wxLIST_FORMAT_CENTER = wxLIST_FORMAT_CENTRE
 133 };
 134
 135 // Autosize values for SetColumnWidth
 136 enum
 137 {
 138     wxLIST_AUTOSIZE = -1,
 139     wxLIST_AUTOSIZE_USEHEADER = -2      // partly supported by generic version
 140 };
 141
 142 // Flag values for GetItemRect
 143 enum
 144 {
 145     wxLIST_RECT_BOUNDS,
 146     wxLIST_RECT_ICON,
 147     wxLIST_RECT_LABEL
 148 };
 149
 150 // Flag values for FindItem (MSW only)
 151 enum
 152 {
 153     wxLIST_FIND_UP,
 154     wxLIST_FIND_DOWN,
 155     wxLIST_FIND_LEFT,
 156     wxLIST_FIND_RIGHT
 157 };
 158
 159 // ----------------------------------------------------------------------------
 160 // wxListItemAttr: a structure containing the visual attributes of an item
 161 // ----------------------------------------------------------------------------
 162
 163 class WXDLLEXPORT wxListItemAttr
 164 {
 165 public:
 166     // ctors
 167     wxListItemAttr() { }
 168     wxListItemAttr(const wxColour& colText,
 169                    const wxColour& colBack,
 170                    const wxFont& font)
 171         : m_colText(colText), m_colBack(colBack), m_font(font) { }
 172
 173     // setters
 174     void SetTextColour(const wxColour& colText) { m_colText = colText; }
 175     void SetBackgroundColour(const wxColour& colBack) { m_colBack = colBack; }
 176     void SetFont(const wxFont& font) { m_font = font; }
 177
 178     // accessors
 179     bool HasTextColour() const { return m_colText.Ok(); }
 180     bool HasBackgroundColour() const { return m_colBack.Ok(); }
 181     bool HasFont() const { return m_font.Ok(); }
 182
 183     const wxColour& GetTextColour() const { return m_colText; }
 184     const wxColour& GetBackgroundColour() const { return m_colBack; }
 185     const wxFont& GetFont() const { return m_font; }
 186
 187 private:
 188     wxColour m_colText,
 189              m_colBack;
 190     wxFont   m_font;
 191 };
 192
 193 // ----------------------------------------------------------------------------
 194 // wxListItem: the item or column info, used to exchange data with wxListCtrl
 195 // ----------------------------------------------------------------------------
 196
 197 class WXDLLEXPORT wxListItem : public wxObject
 198 {
 199 public:
 200     wxListItem() { Init(); m_attr = NULL; }
 201     wxListItem(const wxListItem& item)
 202         : wxObject(),
 203           m_mask(item.m_mask),
 204           m_itemId(item.m_itemId),
 205           m_col(item.m_col),
 206           m_state(item.m_state),
 207           m_stateMask(item.m_stateMask),
 208           m_text(item.m_text),
 209           m_image(item.m_image),
 210           m_data(item.m_data),
 211           m_format(item.m_format),
 212           m_width(item.m_width),
 213           m_attr(NULL)
 214     {
 215         // copy list item attributes
 216         if( item.HasAttributes() )
 217             m_attr = new wxListItemAttr(*item.GetAttributes());
 218     }
 219     virtual ~wxListItem() { delete m_attr; }
 220
 221     // resetting
 222     void Clear() { Init(); m_text.clear(); ClearAttributes(); }
 223     void ClearAttributes() { if ( m_attr ) { delete m_attr; m_attr = NULL; } }
 224
 225     // setters
 226     void SetMask(long mask)
 227         { m_mask = mask; }
 228     void SetId(long id)
 229         { m_itemId = id; }
 230     void SetColumn(int col)
 231         { m_col = col; }
 232     void SetState(long state)
 233         { m_mask |= wxLIST_MASK_STATE; m_state = state; m_stateMask |= state; }
 234     void SetStateMask(long stateMask)
 235         { m_stateMask = stateMask; }
 236     void SetText(const wxString& text)
 237         { m_mask |= wxLIST_MASK_TEXT; m_text = text; }
 238     void SetImage(int image)
 239         { m_mask |= wxLIST_MASK_IMAGE; m_image = image; }
 240     void SetData(long data)
 241         { m_mask |= wxLIST_MASK_DATA; m_data = data; }
 242     void SetData(void *data)
 243         { m_mask |= wxLIST_MASK_DATA; m_data = wxPtrToUInt(data); }
 244
 245     void SetWidth(int width)
 246         { m_mask |= wxLIST_MASK_WIDTH; m_width = width; }
 247     void SetAlign(wxListColumnFormat align)
 248         { m_mask |= wxLIST_MASK_FORMAT; m_format = align; }
 249
 250     void SetTextColour(const wxColour& colText)
 251         { Attributes().SetTextColour(colText); }
 252     void SetBackgroundColour(const wxColour& colBack)
 253         { Attributes().SetBackgroundColour(colBack); }
 254     void SetFont(const wxFont& font)
 255         { Attributes().SetFont(font); }
 256
 257     // accessors
 258     long GetMask() const { return m_mask; }
 259     long GetId() const { return m_itemId; }
 260     int GetColumn() const { return m_col; }
 261     long GetState() const { return m_state & m_stateMask; }
 262     const wxString& GetText() const { return m_text; }
 263     int GetImage() const { return m_image; }
 264     wxUIntPtr GetData() const { return m_data; }
 265
 266     int GetWidth() const { return m_width; }
 267     wxListColumnFormat GetAlign() const { return (wxListColumnFormat)m_format; }
 268
 269     wxListItemAttr *GetAttributes() const { return m_attr; }
 270     bool HasAttributes() const { return m_attr != NULL; }
 271
 272     wxColour GetTextColour() const
 273         { return HasAttributes() ? m_attr->GetTextColour() : wxNullColour; }
 274     wxColour GetBackgroundColour() const
 275         { return HasAttributes() ? m_attr->GetBackgroundColour()
 276                                  : wxNullColour; }
 277     wxFont GetFont() const
 278         { return HasAttributes() ? m_attr->GetFont() : wxNullFont; }
 279
 280     // this conversion is necessary to make old code using GetItem() to
 281     // compile
 282     operator long() const { return m_itemId; }
 283
 284     // these members are public for compatibility
 285
 286     long            m_mask;     // Indicates what fields are valid
 287     long            m_itemId;   // The zero-based item position
 288     int             m_col;      // Zero-based column, if in report mode
 289     long            m_state;    // The state of the item
 290     long            m_stateMask;// Which flags of m_state are valid (uses same flags)
 291     wxString        m_text;     // The label/header text
 292     int             m_image;    // The zero-based index into an image list
 293     wxUIntPtr       m_data;     // App-defined data
 294
 295     // For columns only
 296     int             m_format;   // left, right, centre
 297     int             m_width;    // width of column
 298
 299 #ifdef __WXPM__
 300     int             m_miniImage; // handle to the mini image for OS/2
 301 #endif
 302
 303 protected:
 304     // creates m_attr if we don't have it yet
 305     wxListItemAttr& Attributes()
 306     {
 307         if ( !m_attr )
 308             m_attr = new wxListItemAttr;
 309
 310         return *m_attr;
 311     }
 312
 313     void Init()
 314     {
 315         m_mask = 0;
 316         m_itemId = 0;
 317         m_col = 0;
 318         m_state = 0;
 319         m_stateMask = 0;
 320         m_image = 0;
 321         m_data = 0;
 322
 323         m_format = wxLIST_FORMAT_CENTRE;
 324         m_width = 0;
 325     }
 326
 327     wxListItemAttr *m_attr;     // optional pointer to the items style
 328
 329 private:
 330     // VZ: this is strange, we have a copy ctor but not operator=(), why?
 331     wxListItem& operator=(const wxListItem& item);
 332
 333     DECLARE_DYNAMIC_CLASS(wxListItem)
 334 };
 335
 336 // ----------------------------------------------------------------------------
 337 // wxListEvent - the event class for the wxListCtrl notifications
 338 // ----------------------------------------------------------------------------
 339
 340 class WXDLLEXPORT wxListEvent : public wxNotifyEvent
 341 {
 342 public:
 343     wxListEvent(wxEventType commandType = wxEVT_NULL, int winid = 0)
 344         : wxNotifyEvent(commandType, winid)
 345         , m_code(0)
 346         , m_oldItemIndex(0)
 347         , m_itemIndex(0)
 348         , m_col(0)
 349         , m_pointDrag()
 350         , m_item()
 351         , m_editCancelled(false)
 352         { }
 353
 354     wxListEvent(const wxListEvent& event)
 355         : wxNotifyEvent(event)
 356         , m_code(event.m_code)
 357         , m_oldItemIndex(event.m_oldItemIndex)
 358         , m_itemIndex(event.m_itemIndex)
 359         , m_col(event.m_col)
 360         , m_pointDrag(event.m_pointDrag)
 361         , m_item(event.m_item)
 362         , m_editCancelled(event.m_editCancelled)
 363         { }
 364
 365     int GetKeyCode() const { return m_code; }
 366     long GetIndex() const { return m_itemIndex; }
 367     int GetColumn() const { return m_col; }
 368     wxPoint GetPoint() const { return m_pointDrag; }
 369     const wxString& GetLabel() const { return m_item.m_text; }
 370     const wxString& GetText() const { return m_item.m_text; }
 371     int GetImage() const { return m_item.m_image; }
 372     long GetData() const { return wx_static_cast(long, m_item.m_data); }
 373     long GetMask() const { return m_item.m_mask; }
 374     const wxListItem& GetItem() const { return m_item; }
 375
 376     // for wxEVT_COMMAND_LIST_CACHE_HINT only
 377     long GetCacheFrom() const { return m_oldItemIndex; }
 378     long GetCacheTo() const { return m_itemIndex; }
 379
 380     // was label editing canceled? (for wxEVT_COMMAND_LIST_END_LABEL_EDIT only)
 381     bool IsEditCancelled() const { return m_editCancelled; }
 382     void SetEditCanceled(bool editCancelled) { m_editCancelled = editCancelled; }
 383
 384 #if WXWIN_COMPATIBILITY_2_2
 385     // these methods don't do anything at all
 386     long GetOldIndex() const { return 0; }
 387     long GetOldItem() const { return 0; }
 388
 389     // this one is superseded by GetKeyCode()
 390     int GetCode() const { return GetKeyCode(); }
 391 #endif // WXWIN_COMPATIBILITY_2_2
 392
 393     virtual wxEvent *Clone() const { return new wxListEvent(*this); }
 394
 395 //protected: -- not for backwards compatibility
 396     int           m_code;
 397     long          m_oldItemIndex; // only for wxEVT_COMMAND_LIST_CACHE_HINT
 398     long          m_itemIndex;
 399     int           m_col;
 400     wxPoint       m_pointDrag;
 401
 402     wxListItem    m_item;
 403
 404 protected:
 405     bool          m_editCancelled;
 406
 407 private:
 408     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxListEvent)
 409 };
 410
 411 // ----------------------------------------------------------------------------
 412 // wxListCtrl event macros
 413 // ----------------------------------------------------------------------------
 414
 415 BEGIN_DECLARE_EVENT_TYPES()
 416     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_BEGIN_DRAG, 700)
 417     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_BEGIN_RDRAG, 701)
 418     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_BEGIN_LABEL_EDIT, 702)
 419     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_END_LABEL_EDIT, 703)
 420     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_DELETE_ITEM, 704)
 421     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_DELETE_ALL_ITEMS, 705)
 422 #if WXWIN_COMPATIBILITY_2_4
 423     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_GET_INFO, 706)
 424     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_SET_INFO, 707)
 425 #endif
 426     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_ITEM_SELECTED, 708)
 427     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_ITEM_DESELECTED, 709)
 428     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_KEY_DOWN, 710)
 429     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_INSERT_ITEM, 711)
 430     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_COL_CLICK, 712)
 431     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_ITEM_RIGHT_CLICK, 713)
 432     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_ITEM_MIDDLE_CLICK, 714)
 433     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_ITEM_ACTIVATED, 715)
 434     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_CACHE_HINT, 716)
 435     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_COL_RIGHT_CLICK, 717)
 436     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_COL_BEGIN_DRAG, 718)
 437     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_COL_DRAGGING, 719)
 438     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_COL_END_DRAG, 720)
 439     DECLARE_EVENT_TYPE(wxEVT_COMMAND_LIST_ITEM_FOCUSED, 721)
 440 END_DECLARE_EVENT_TYPES()
 441
 442 typedef void (wxEvtHandler::*wxListEventFunction)(wxListEvent&);
 443
 444 #define wxListEventHandler(func) \
 445     (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxListEventFunction, &func)
 446
 447 #define wx__DECLARE_LISTEVT(evt, id, fn) \
 448     wx__DECLARE_EVT1(wxEVT_COMMAND_LIST_ ## evt, id, wxListEventHandler(fn))
 449
 450 #define EVT_LIST_BEGIN_DRAG(id, fn) wx__DECLARE_LISTEVT(BEGIN_DRAG, id, fn)
 451 #define EVT_LIST_BEGIN_RDRAG(id, fn) wx__DECLARE_LISTEVT(BEGIN_RDRAG, id, fn)
 452 #define EVT_LIST_BEGIN_LABEL_EDIT(id, fn) wx__DECLARE_LISTEVT(BEGIN_LABEL_EDIT, id, fn)
 453 #define EVT_LIST_END_LABEL_EDIT(id, fn) wx__DECLARE_LISTEVT(END_LABEL_EDIT, id, fn)
 454 #define EVT_LIST_DELETE_ITEM(id, fn) wx__DECLARE_LISTEVT(DELETE_ITEM, id, fn)
 455 #define EVT_LIST_DELETE_ALL_ITEMS(id, fn) wx__DECLARE_LISTEVT(DELETE_ALL_ITEMS, id, fn)
 456 #define EVT_LIST_KEY_DOWN(id, fn) wx__DECLARE_LISTEVT(KEY_DOWN, id, fn)
 457 #define EVT_LIST_INSERT_ITEM(id, fn) wx__DECLARE_LISTEVT(INSERT_ITEM, id, fn)
 458
 459 #define EVT_LIST_COL_CLICK(id, fn) wx__DECLARE_LISTEVT(COL_CLICK, id, fn)
 460 #define EVT_LIST_COL_RIGHT_CLICK(id, fn) wx__DECLARE_LISTEVT(COL_RIGHT_CLICK, id, fn)
 461 #define EVT_LIST_COL_BEGIN_DRAG(id, fn) wx__DECLARE_LISTEVT(COL_BEGIN_DRAG, id, fn)
 462 #define EVT_LIST_COL_DRAGGING(id, fn) wx__DECLARE_LISTEVT(COL_DRAGGING, id, fn)
 463 #define EVT_LIST_COL_END_DRAG(id, fn) wx__DECLARE_LISTEVT(COL_END_DRAG, id, fn)
 464
 465 #define EVT_LIST_ITEM_SELECTED(id, fn) wx__DECLARE_LISTEVT(ITEM_SELECTED, id, fn)
 466 #define EVT_LIST_ITEM_DESELECTED(id, fn) wx__DECLARE_LISTEVT(ITEM_DESELECTED, id, fn)
 467 #define EVT_LIST_ITEM_RIGHT_CLICK(id, fn) wx__DECLARE_LISTEVT(ITEM_RIGHT_CLICK, id, fn)
 468 #define EVT_LIST_ITEM_MIDDLE_CLICK(id, fn) wx__DECLARE_LISTEVT(ITEM_MIDDLE_CLICK, id, fn)
 469 #define EVT_LIST_ITEM_ACTIVATED(id, fn) wx__DECLARE_LISTEVT(ITEM_ACTIVATED, id, fn)
 470 #define EVT_LIST_ITEM_FOCUSED(id, fn) wx__DECLARE_LISTEVT(ITEM_FOCUSED, id, fn)
 471
 472 #define EVT_LIST_CACHE_HINT(id, fn) wx__DECLARE_LISTEVT(CACHE_HINT, id, fn)
 473
 474
 475 #if WXWIN_COMPATIBILITY_2_4
 476 #define EVT_LIST_GET_INFO(id, fn) wx__DECLARE_LISTEVT(GET_INFO, id, fn)
 477 #define EVT_LIST_SET_INFO(id, fn) wx__DECLARE_LISTEVT(SET_INFO, id, fn)
 478 #endif
 479
 480 #endif // wxUSE_LISTCTRL
 481
 482 #endif
 483     // _WX_LISTCTRL_H_BASE_