include/wx/html/htmlcell.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        htmlcell.h
   3 // Purpose:     wxHtmlCell class is used by wxHtmlWindow/wxHtmlWinParser
   4 //              as a basic visual element of HTML page
   5 // Author:      Vaclav Slavik
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 1999 Vaclav Slavik
   8 // Licence:     wxWindows Licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11
  12 #ifndef _WX_HTMLCELL_H_
  13 #define _WX_HTMLCELL_H_
  14
  15 #if defined(__GNUG__) && !defined(__APPLE__)
  16 #pragma interface "htmlcell.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #if wxUSE_HTML
  22
  23 #include "wx/html/htmltag.h"
  24 #include "wx/html/htmldefs.h"
  25 #include "wx/window.h"
  26
  27
  28 class WXDLLEXPORT wxHtmlLinkInfo;
  29 class WXDLLEXPORT wxHtmlCell;
  30 class WXDLLEXPORT wxHtmlContainerCell;
  31
  32
  33 // wxHtmlSelection is data holder with information about text selection.
  34 // Selection is defined by two positions (beginning and end of the selection)
  35 // and two leaf(!) cells at these positions.
  36 class WXDLLEXPORT wxHtmlSelection
  37 {
  38 public:
  39     wxHtmlSelection()
  40         : m_fromPos(wxDefaultPosition), m_toPos(wxDefaultPosition),
  41           m_fromCell(NULL), m_toCell(NULL) {}
  42
  43     void Set(const wxPoint& fromPos, wxHtmlCell *fromCell,
  44              const wxPoint& toPos, wxHtmlCell *toCell);
  45     void Set(wxHtmlCell *fromCell, wxHtmlCell *toCell);
  46
  47     const wxHtmlCell *GetFromCell() const { return m_fromCell; }
  48     const wxHtmlCell *GetToCell() const { return m_toCell; }
  49
  50     // these values are *relative* to From/To cell's origin:
  51     const wxPoint& GetFromPos() const { return m_fromPos; }
  52     const wxPoint& GetToPos() const { return m_toPos; }
  53
  54     const bool IsEmpty() const
  55         { return m_fromPos == wxDefaultPosition &&
  56                  m_toPos == wxDefaultPosition; }
  57
  58 private:
  59     wxPoint     m_fromPos,   m_toPos;
  60     wxHtmlCell *m_fromCell, *m_toCell;
  61 };
  62
  63
  64
  65 enum wxHtmlSelectionState
  66 {
  67     wxHTML_SEL_OUT,     // currently rendered cell is outside the selection
  68     wxHTML_SEL_IN,      // ... is inside selection
  69     wxHTML_SEL_CHANGING // ... is the cell on which selection state changes
  70 };
  71
  72 // Selection state is passed to wxHtmlCell::Draw so that it can render itself
  73 // differently e.g. when inside text selection or outside it.
  74 class WXDLLEXPORT wxHtmlRenderingState
  75 {
  76 public:
  77     wxHtmlRenderingState() : m_selState(wxHTML_SEL_OUT) {}
  78
  79     void SetSelectionState(wxHtmlSelectionState s) { m_selState = s; }
  80     wxHtmlSelectionState GetSelectionState() const { return m_selState; }
  81
  82     void SetFgColour(const wxColour& c) { m_fgColour = c; }
  83     const wxColour& GetFgColour() const { return m_fgColour; }
  84     void SetBgColour(const wxColour& c) { m_bgColour = c; }
  85     const wxColour& GetBgColour() const { return m_bgColour; }
  86
  87 private:
  88     wxHtmlSelectionState  m_selState;
  89     wxColour              m_fgColour, m_bgColour;
  90 };
  91
  92
  93 // HTML rendering customization. This class is used when rendering wxHtmlCells
  94 // as a callback .
  95 class WXDLLEXPORT wxHtmlRenderingStyle
  96 {
  97 public:
  98     virtual wxColour GetSelectedTextColour(const wxColour& clr) = 0;
  99     virtual wxColour GetSelectedTextBgColour(const wxColour& clr) = 0;
 100 };
 101
 102 class WXDLLEXPORT wxDefaultHtmlRenderingStyle : public wxHtmlRenderingStyle
 103 {
 104 public:
 105     virtual wxColour GetSelectedTextColour(const wxColour& clr);
 106     virtual wxColour GetSelectedTextBgColour(const wxColour& clr);
 107 };
 108
 109
 110 // Information given to cells when drawing them. Contains rendering state,
 111 // selection information and rendering style object that can be used to
 112 // customize the output.
 113 class WXDLLEXPORT wxHtmlRenderingInfo
 114 {
 115 public:
 116     wxHtmlRenderingInfo() : m_selection(NULL), m_style(NULL) {}
 117
 118     void SetSelection(wxHtmlSelection *s) { m_selection = s; }
 119     wxHtmlSelection *GetSelection() const { return m_selection; }
 120
 121     void SetStyle(wxHtmlRenderingStyle *style) { m_style = style; }
 122     wxHtmlRenderingStyle& GetStyle() { return *m_style; }
 123
 124     wxHtmlRenderingState& GetState() { return m_state; }
 125
 126 protected:
 127     wxHtmlSelection      *m_selection;
 128     wxHtmlRenderingStyle *m_style;
 129     wxHtmlRenderingState m_state;
 130 };
 131
 132
 133 // Flags for wxHtmlCell::FindCellByPos
 134 enum
 135 {
 136     wxHTML_FIND_EXACT             = 1,
 137     wxHTML_FIND_NEAREST_BEFORE    = 2,
 138     wxHTML_FIND_NEAREST_AFTER     = 4,
 139 };
 140
 141
 142
 143
 144 // ---------------------------------------------------------------------------
 145 // wxHtmlCell
 146 //                  Internal data structure. It represents fragments of parsed
 147 //                  HTML page - a word, picture, table, horizontal line and so
 148 //                  on.  It is used by wxHtmlWindow to represent HTML page in
 149 //                  memory.
 150 // ---------------------------------------------------------------------------
 151
 152
 153 class WXDLLEXPORT wxHtmlCell : public wxObject
 154 {
 155 public:
 156     wxHtmlCell();
 157     virtual ~wxHtmlCell();
 158
 159     void SetParent(wxHtmlContainerCell *p) {m_Parent = p;}
 160     wxHtmlContainerCell *GetParent() const {return m_Parent;}
 161
 162     int GetPosX() const {return m_PosX;}
 163     int GetPosY() const {return m_PosY;}
 164     int GetWidth() const {return m_Width;}
 165     int GetHeight() const {return m_Height;}
 166     int GetDescent() const {return m_Descent;}
 167
 168     const wxString& GetId() const { return m_id; }
 169     void SetId(const wxString& id) { m_id = id; }
 170
 171     // returns the link associated with this cell. The position is position
 172     // within the cell so it varies from 0 to m_Width, from 0 to m_Height
 173     virtual wxHtmlLinkInfo* GetLink(int WXUNUSED(x) = 0,
 174                                     int WXUNUSED(y) = 0) const
 175         { return m_Link; }
 176
 177     // return next cell among parent's cells
 178     wxHtmlCell *GetNext() const {return m_Next;}
 179     // returns first child cell (if there are any, i.e. if this is container):
 180     virtual wxHtmlCell* GetFirstChild() const { return NULL; }
 181
 182     // members writing methods
 183     virtual void SetPos(int x, int y) {m_PosX = x, m_PosY = y;}
 184     void SetLink(const wxHtmlLinkInfo& link);
 185     void SetNext(wxHtmlCell *cell) {m_Next = cell;}
 186
 187     // 1. adjust cell's width according to the fact that maximal possible width
 188     //    is w.  (this has sense when working with horizontal lines, tables
 189     //    etc.)
 190     // 2. prepare layout (=fill-in m_PosX, m_PosY (and sometime m_Height)
 191     //    members) = place items to fit window, according to the width w
 192     virtual void Layout(int w);
 193
 194     // renders the cell
 195     virtual void Draw(wxDC& WXUNUSED(dc),
 196                       int WXUNUSED(x), int WXUNUSED(y),
 197                       int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 198                       wxHtmlRenderingInfo& WXUNUSED(info)) {}
 199
 200     // proceed drawing actions in case the cell is not visible (scrolled out of
 201     // screen).  This is needed to change fonts, colors and so on.
 202     virtual void DrawInvisible(wxDC& WXUNUSED(dc),
 203                                int WXUNUSED(x), int WXUNUSED(y),
 204                                wxHtmlRenderingInfo& WXUNUSED(info)) {}
 205
 206     // This method returns pointer to the FIRST cell for that
 207     // the condition
 208     // is true. It first checks if the condition is true for this
 209     // cell and then calls m_Next->Find(). (Note: it checks
 210     // all subcells if the cell is container)
 211     // Condition is unique condition identifier (see htmldefs.h)
 212     // (user-defined condition IDs should start from 10000)
 213     // and param is optional parameter
 214     // Example : m_Cell->Find(wxHTML_COND_ISANCHOR, "news");
 215     //   returns pointer to anchor news
 216     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 217
 218     // This function is called when mouse button is clicked over the cell.
 219     //
 220     // Parent is pointer to wxHtmlWindow that generated the event
 221     // HINT: if this handling is not enough for you you should use
 222     //       wxHtmlWidgetCell
 223     virtual void OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event);
 224
 225     // This method used to adjust pagebreak position. The parameter is variable
 226     // that contains y-coordinate of page break (= horizontal line that should
 227     // not be crossed by words, images etc.). If this cell cannot be divided
 228     // into two pieces (each one on another page) then it moves the pagebreak
 229     // few pixels up.
 230     //
 231     // Returned value : true if pagebreak was modified, false otherwise
 232     // Usage : while (container->AdjustPagebreak(&p)) {}
 233     virtual bool AdjustPagebreak(int *pagebreak,
 234                                  int *known_pagebreaks = NULL,
 235                                  int number_of_pages = 0) const;
 236
 237     // Sets cell's behaviour on pagebreaks (see AdjustPagebreak). Default
 238     // is true - the cell can be split on two pages
 239     void SetCanLiveOnPagebreak(bool can) { m_CanLiveOnPagebreak = can; }
 240
 241     // Returns y-coordinates that contraint the cell, i.e. left is highest
 242     // and right lowest coordinate such that the cell lays between then.
 243     // Note: this method does not return meaningful values if you haven't
 244     //       called Layout() before!
 245     virtual void GetHorizontalConstraints(int *left, int *right) const;
 246
 247     // Returns true for simple == terminal cells, i.e. not composite ones.
 248     // This if for internal usage only and may disappear in future versions!
 249     virtual bool IsTerminalCell() const { return TRUE; }
 250
 251     // Find a cell inside this cell positioned at the given coordinates
 252     // (relative to this's positions). Returns NULL if no such cell exists.
 253     // The flag can be used to specify whether to look for terminal or
 254     // nonterminal cells or both. In either case, returned cell is deepest
 255     // cell in cells tree that contains [x,y].
 256     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 257                                   unsigned flags = wxHTML_FIND_EXACT) const;
 258
 259     // Returns absolute position of the cell on HTML canvas
 260     wxPoint GetAbsPos() const;
 261
 262     // Returns first (last) terminal cell inside this cell. It may return NULL,
 263     // but it is rare -- only if there are no terminals in the tree.
 264     virtual wxHtmlCell *GetFirstTerminal() const
 265         { return wxConstCast(this, wxHtmlCell); }
 266     virtual wxHtmlCell *GetLastTerminal() const
 267         { return wxConstCast(this, wxHtmlCell); }
 268
 269     // Returns cell's depth, i.e. how far under the root cell it is
 270     // (if it is the root, depth is 0)
 271     unsigned GetDepth() const;
 272
 273     // Returns true if the cell appears before 'cell' in natural order of
 274     // cells (= as they are read). If cell A is (grand)parent of cell B,
 275     // then both A.IsBefore(B) and B.IsBefore(A) always return true.
 276     bool IsBefore(wxHtmlCell *cell) const;
 277
 278     // Converts the cell into text representation. If sel != NULL then
 279     // only part of the cell inside the selection is converted.
 280     virtual wxString ConvertToText(wxHtmlSelection *WXUNUSED(sel)) const
 281         { return wxEmptyString; }
 282
 283 protected:
 284     wxHtmlCell *m_Next;
 285             // pointer to the next cell
 286     wxHtmlContainerCell *m_Parent;
 287             // pointer to parent cell
 288     long m_Width, m_Height, m_Descent;
 289             // dimensions of fragment
 290             // m_Descent is used to position text&images..
 291     long m_PosX, m_PosY;
 292             // position where the fragment is drawn
 293     wxHtmlLinkInfo *m_Link;
 294             // destination address if this fragment is hypertext link, NULL otherwise
 295     bool m_CanLiveOnPagebreak;
 296             // true if this cell can be placed on pagebreak, false otherwise
 297     wxString m_id;
 298             // unique identifier of the cell, generated from "id" property of tags
 299
 300     DECLARE_NO_COPY_CLASS(wxHtmlCell)
 301 };
 302
 303
 304
 305
 306 // ----------------------------------------------------------------------------
 307 // Inherited cells:
 308 // ----------------------------------------------------------------------------
 309
 310
 311 // ----------------------------------------------------------------------------
 312 // wxHtmlWordCell
 313 //                  Single word in input stream.
 314 // ----------------------------------------------------------------------------
 315
 316 class WXDLLEXPORT wxHtmlWordCell : public wxHtmlCell
 317 {
 318 public:
 319     wxHtmlWordCell(const wxString& word, wxDC& dc);
 320     void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 321               wxHtmlRenderingInfo& info);
 322     wxString ConvertToText(wxHtmlSelection *sel) const;
 323
 324 protected:
 325     void Split(wxDC& dc,
 326                const wxPoint& selFrom, const wxPoint& selTo,
 327                wxString& s1, wxString& s2, wxString& s3,
 328                unsigned& pos1, unsigned& pos2);
 329
 330     wxString m_Word;
 331 };
 332
 333
 334
 335
 336
 337 // Container contains other cells, thus forming tree structure of rendering
 338 // elements. Basic code of layout algorithm is contained in this class.
 339 class WXDLLEXPORT wxHtmlContainerCell : public wxHtmlCell
 340 {
 341 public:
 342     wxHtmlContainerCell(wxHtmlContainerCell *parent);
 343     ~wxHtmlContainerCell();
 344
 345     virtual void Layout(int w);
 346     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 347                       wxHtmlRenderingInfo& info);
 348     virtual void DrawInvisible(wxDC& dc, int x, int y,
 349                                wxHtmlRenderingInfo& info);
 350     virtual bool AdjustPagebreak(int *pagebreak, int *known_pagebreaks = NULL, int number_of_pages = 0) const;
 351
 352     // insert cell at the end of m_Cells list
 353     void InsertCell(wxHtmlCell *cell);
 354
 355     // sets horizontal/vertical alignment
 356     void SetAlignHor(int al) {m_AlignHor = al; m_LastLayout = -1;}
 357     int GetAlignHor() const {return m_AlignHor;}
 358     void SetAlignVer(int al) {m_AlignVer = al; m_LastLayout = -1;}
 359     int GetAlignVer() const {return m_AlignVer;}
 360
 361     // sets left-border indentation. units is one of wxHTML_UNITS_* constants
 362     // what is combination of wxHTML_INDENT_*
 363     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 364     // returns the indentation. ind is one of wxHTML_INDENT_* constants
 365     int GetIndent(int ind) const;
 366     // returns type of value returned by GetIndent(ind)
 367     int GetIndentUnits(int ind) const;
 368
 369     // sets alignment info based on given tag's params
 370     void SetAlign(const wxHtmlTag& tag);
 371     // sets floating width adjustment
 372     // (examples : 32 percent of parent container,
 373     // -15 pixels percent (this means 100 % - 15 pixels)
 374     void SetWidthFloat(int w, int units) {m_WidthFloat = w; m_WidthFloatUnits = units; m_LastLayout = -1;}
 375     void SetWidthFloat(const wxHtmlTag& tag, double pixel_scale = 1.0);
 376     // sets minimal height of this container.
 377     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP) {m_MinHeight = h; m_MinHeightAlign = align; m_LastLayout = -1;}
 378
 379     void SetBackgroundColour(const wxColour& clr) {m_UseBkColour = TRUE; m_BkColour = clr;}
 380     // returns background colour (of wxNullColour if none set), so that widgets can
 381     // adapt to it:
 382     wxColour GetBackgroundColour();
 383     void SetBorder(const wxColour& clr1, const wxColour& clr2) {m_UseBorder = TRUE; m_BorderColour1 = clr1, m_BorderColour2 = clr2;}
 384     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 385     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 386     virtual void OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event);
 387     virtual void GetHorizontalConstraints(int *left, int *right) const;
 388
 389     virtual wxHtmlCell* GetFirstChild() const { return m_Cells; }
 390 #if WXWIN_COMPATIBILITY_2_4
 391     wxDEPRECATED( wxHtmlCell* GetFirstCell() const );
 392 #endif
 393
 394     // see comment in wxHtmlCell about this method
 395     virtual bool IsTerminalCell() const { return FALSE; }
 396
 397     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 398                                   unsigned flags = wxHTML_FIND_EXACT) const;
 399
 400     virtual wxHtmlCell *GetFirstTerminal() const;
 401     virtual wxHtmlCell *GetLastTerminal() const;
 402
 403 protected:
 404     void UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 405                                  wxHtmlCell *cell) const;
 406     void UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 407                                   wxHtmlCell *cell) const;
 408
 409 protected:
 410     int m_IndentLeft, m_IndentRight, m_IndentTop, m_IndentBottom;
 411             // indentation of subcells. There is always m_Indent pixels
 412             // big space between given border of the container and the subcells
 413             // it m_Indent < 0 it is in PERCENTS, otherwise it is in pixels
 414     int m_MinHeight, m_MinHeightAlign;
 415         // minimal height.
 416     wxHtmlCell *m_Cells, *m_LastCell;
 417             // internal cells, m_Cells points to the first of them, m_LastCell to the last one.
 418             // (LastCell is needed only to speed-up InsertCell)
 419     int m_AlignHor, m_AlignVer;
 420             // alignment horizontal and vertical (left, center, right)
 421     int m_WidthFloat, m_WidthFloatUnits;
 422             // width float is used in adjustWidth
 423     bool m_UseBkColour;
 424     wxColour m_BkColour;
 425             // background color of this container
 426     bool m_UseBorder;
 427     wxColour m_BorderColour1, m_BorderColour2;
 428             // borders color of this container
 429     int m_LastLayout;
 430             // if != -1 then call to Layout may be no-op
 431             // if previous call to Layout has same argument
 432
 433     DECLARE_NO_COPY_CLASS(wxHtmlContainerCell)
 434 };
 435
 436 #if WXWIN_COMPATIBILITY_2_4
 437 inline wxHtmlCell* wxHtmlContainerCell::GetFirstCell() const
 438     { return GetFirstChild(); }
 439 #endif
 440
 441
 442
 443
 444 // ---------------------------------------------------------------------------
 445 // wxHtmlColourCell
 446 //                  Color changer.
 447 // ---------------------------------------------------------------------------
 448
 449 class WXDLLEXPORT wxHtmlColourCell : public wxHtmlCell
 450 {
 451 public:
 452     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND) : wxHtmlCell() {m_Colour = clr; m_Flags = flags;}
 453     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 454                       wxHtmlRenderingInfo& info);
 455     virtual void DrawInvisible(wxDC& dc, int x, int y,
 456                                wxHtmlRenderingInfo& info);
 457
 458 protected:
 459     wxColour m_Colour;
 460     unsigned m_Flags;
 461 };
 462
 463
 464
 465
 466 //--------------------------------------------------------------------------------
 467 // wxHtmlFontCell
 468 //                  Sets actual font used for text rendering
 469 //--------------------------------------------------------------------------------
 470
 471 class WXDLLEXPORT wxHtmlFontCell : public wxHtmlCell
 472 {
 473 public:
 474     wxHtmlFontCell(wxFont *font) : wxHtmlCell() { m_Font = (*font); }
 475     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 476                       wxHtmlRenderingInfo& info);
 477     virtual void DrawInvisible(wxDC& dc, int x, int y,
 478                                wxHtmlRenderingInfo& info);
 479
 480 protected:
 481     wxFont m_Font;
 482 };
 483
 484
 485
 486
 487
 488
 489 //--------------------------------------------------------------------------------
 490 // wxHtmlwidgetCell
 491 //                  This cell is connected with wxWindow object
 492 //                  You can use it to insert windows into HTML page
 493 //                  (buttons, input boxes etc.)
 494 //--------------------------------------------------------------------------------
 495
 496 class WXDLLEXPORT wxHtmlWidgetCell : public wxHtmlCell
 497 {
 498 public:
 499     // !!! wnd must have correct parent!
 500     // if w != 0 then the m_Wnd has 'floating' width - it adjust
 501     // it's width according to parent container's width
 502     // (w is percent of parent's width)
 503     wxHtmlWidgetCell(wxWindow *wnd, int w = 0);
 504     ~wxHtmlWidgetCell() { m_Wnd->Destroy(); }
 505     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 506                       wxHtmlRenderingInfo& info);
 507     virtual void DrawInvisible(wxDC& dc, int x, int y,
 508                                wxHtmlRenderingInfo& info);
 509     virtual void Layout(int w);
 510
 511 protected:
 512     wxWindow* m_Wnd;
 513     int m_WidthFloat;
 514             // width float is used in adjustWidth (it is in percents)
 515
 516     DECLARE_NO_COPY_CLASS(wxHtmlWidgetCell)
 517 };
 518
 519
 520
 521 //--------------------------------------------------------------------------------
 522 // wxHtmlLinkInfo
 523 //                  Internal data structure. It represents hypertext link
 524 //--------------------------------------------------------------------------------
 525
 526 class WXDLLEXPORT wxHtmlLinkInfo : public wxObject
 527 {
 528 public:
 529     wxHtmlLinkInfo() : wxObject()
 530           { m_Href = m_Target = wxEmptyString; m_Event = NULL, m_Cell = NULL; }
 531     wxHtmlLinkInfo(const wxString& href, const wxString& target = wxEmptyString) : wxObject()
 532           { m_Href = href; m_Target = target; m_Event = NULL, m_Cell = NULL; }
 533     wxHtmlLinkInfo(const wxHtmlLinkInfo& l) : wxObject()
 534           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 535             m_Cell = l.m_Cell; }
 536     wxHtmlLinkInfo& operator=(const wxHtmlLinkInfo& l)
 537           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 538             m_Cell = l.m_Cell; return *this; }
 539
 540     void SetEvent(const wxMouseEvent *e) { m_Event = e; }
 541     void SetHtmlCell(const wxHtmlCell *e) { m_Cell = e; }
 542
 543     wxString GetHref() const { return m_Href; }
 544     wxString GetTarget() const { return m_Target; }
 545     const wxMouseEvent* GetEvent() const { return m_Event; }
 546     const wxHtmlCell* GetHtmlCell() const { return m_Cell; }
 547
 548 private:
 549     wxString m_Href, m_Target;
 550     const wxMouseEvent *m_Event;
 551     const wxHtmlCell *m_Cell;
 552 };
 553
 554
 555
 556 // ----------------------------------------------------------------------------
 557 // wxHtmlTerminalCellsInterator
 558 // ----------------------------------------------------------------------------
 559
 560 class WXDLLEXPORT wxHtmlTerminalCellsInterator
 561 {
 562 public:
 563     wxHtmlTerminalCellsInterator(const wxHtmlCell *from, const wxHtmlCell *to)
 564         : m_to(to), m_pos(from) {}
 565
 566     operator bool() const { return m_pos != NULL; }
 567     const wxHtmlCell* operator++();
 568     const wxHtmlCell* operator->() const { return m_pos; }
 569     const wxHtmlCell* operator*() const { return m_pos; }
 570
 571 private:
 572     const wxHtmlCell *m_to, *m_pos;
 573 };
 574
 575
 576
 577 #endif // wxUSE_HTML
 578
 579 #endif // _WX_HTMLCELL_H_
 580