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) 1999-2003 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 WXDLLIMPEXP_HTML wxHtmlLinkInfo;
  29 class WXDLLIMPEXP_HTML wxHtmlCell;
  30 class WXDLLIMPEXP_HTML 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 WXDLLIMPEXP_HTML wxHtmlSelection
  37 {
  38 public:
  39     wxHtmlSelection()
  40         : m_fromPos(wxDefaultPosition), m_toPos(wxDefaultPosition),
  41           m_fromPrivPos(wxDefaultPosition), m_toPrivPos(wxDefaultPosition),
  42           m_fromCell(NULL), m_toCell(NULL) {}
  43
  44     void Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
  45              const wxPoint& toPos, const wxHtmlCell *toCell);
  46     void Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell);
  47
  48     const wxHtmlCell *GetFromCell() const { return m_fromCell; }
  49     const wxHtmlCell *GetToCell() const { return m_toCell; }
  50
  51     // these values are in absolute coordinates:
  52     const wxPoint& GetFromPos() const { return m_fromPos; }
  53     const wxPoint& GetToPos() const { return m_toPos; }
  54
  55     // these are From/ToCell's private data
  56     const wxPoint& GetFromPrivPos() const { return m_fromPrivPos; }
  57     const wxPoint& GetToPrivPos() const { return m_toPrivPos; }
  58     void SetFromPrivPos(const wxPoint& pos) { m_fromPrivPos = pos; }
  59     void SetToPrivPos(const wxPoint& pos) { m_toPrivPos = pos; }
  60     void ClearPrivPos() { m_toPrivPos = m_fromPrivPos = wxDefaultPosition; }
  61
  62     const bool IsEmpty() const
  63         { return m_fromPos == wxDefaultPosition &&
  64                  m_toPos == wxDefaultPosition; }
  65
  66 private:
  67     wxPoint m_fromPos, m_toPos;
  68     wxPoint m_fromPrivPos, m_toPrivPos;
  69     const wxHtmlCell *m_fromCell, *m_toCell;
  70 };
  71
  72
  73
  74 enum wxHtmlSelectionState
  75 {
  76     wxHTML_SEL_OUT,     // currently rendered cell is outside the selection
  77     wxHTML_SEL_IN,      // ... is inside selection
  78     wxHTML_SEL_CHANGING // ... is the cell on which selection state changes
  79 };
  80
  81 // Selection state is passed to wxHtmlCell::Draw so that it can render itself
  82 // differently e.g. when inside text selection or outside it.
  83 class WXDLLIMPEXP_HTML wxHtmlRenderingState
  84 {
  85 public:
  86     wxHtmlRenderingState() : m_selState(wxHTML_SEL_OUT) {}
  87
  88     void SetSelectionState(wxHtmlSelectionState s) { m_selState = s; }
  89     wxHtmlSelectionState GetSelectionState() const { return m_selState; }
  90
  91     void SetFgColour(const wxColour& c) { m_fgColour = c; }
  92     const wxColour& GetFgColour() const { return m_fgColour; }
  93     void SetBgColour(const wxColour& c) { m_bgColour = c; }
  94     const wxColour& GetBgColour() const { return m_bgColour; }
  95
  96 private:
  97     wxHtmlSelectionState  m_selState;
  98     wxColour              m_fgColour, m_bgColour;
  99 };
 100
 101
 102 // HTML rendering customization. This class is used when rendering wxHtmlCells
 103 // as a callback:
 104 class WXDLLIMPEXP_HTML wxHtmlRenderingStyle
 105 {
 106 public:
 107     virtual wxColour GetSelectedTextColour(const wxColour& clr) = 0;
 108     virtual wxColour GetSelectedTextBgColour(const wxColour& clr) = 0;
 109 };
 110
 111 // Standard style:
 112 class WXDLLIMPEXP_HTML wxDefaultHtmlRenderingStyle : public wxHtmlRenderingStyle
 113 {
 114 public:
 115     virtual wxColour GetSelectedTextColour(const wxColour& clr);
 116     virtual wxColour GetSelectedTextBgColour(const wxColour& clr);
 117 };
 118
 119
 120 // Information given to cells when drawing them. Contains rendering state,
 121 // selection information and rendering style object that can be used to
 122 // customize the output.
 123 class WXDLLIMPEXP_HTML wxHtmlRenderingInfo
 124 {
 125 public:
 126     wxHtmlRenderingInfo() : m_selection(NULL), m_style(NULL) {}
 127
 128     void SetSelection(wxHtmlSelection *s) { m_selection = s; }
 129     wxHtmlSelection *GetSelection() const { return m_selection; }
 130
 131     void SetStyle(wxHtmlRenderingStyle *style) { m_style = style; }
 132     wxHtmlRenderingStyle& GetStyle() { return *m_style; }
 133
 134     wxHtmlRenderingState& GetState() { return m_state; }
 135
 136 protected:
 137     wxHtmlSelection      *m_selection;
 138     wxHtmlRenderingStyle *m_style;
 139     wxHtmlRenderingState m_state;
 140 };
 141
 142
 143 // Flags for wxHtmlCell::FindCellByPos
 144 enum
 145 {
 146     wxHTML_FIND_EXACT             = 1,
 147     wxHTML_FIND_NEAREST_BEFORE    = 2,
 148     wxHTML_FIND_NEAREST_AFTER     = 4
 149 };
 150
 151
 152
 153
 154 // ---------------------------------------------------------------------------
 155 // wxHtmlCell
 156 //                  Internal data structure. It represents fragments of parsed
 157 //                  HTML page - a word, picture, table, horizontal line and so
 158 //                  on.  It is used by wxHtmlWindow to represent HTML page in
 159 //                  memory.
 160 // ---------------------------------------------------------------------------
 161
 162
 163 class WXDLLIMPEXP_HTML wxHtmlCell : public wxObject
 164 {
 165 public:
 166     wxHtmlCell();
 167     virtual ~wxHtmlCell();
 168
 169     void SetParent(wxHtmlContainerCell *p) {m_Parent = p;}
 170     wxHtmlContainerCell *GetParent() const {return m_Parent;}
 171
 172     int GetPosX() const {return m_PosX;}
 173     int GetPosY() const {return m_PosY;}
 174     int GetWidth() const {return m_Width;}
 175     int GetHeight() const {return m_Height;}
 176     int GetDescent() const {return m_Descent;}
 177
 178     // Formatting cells are not visible on the screen, they only alter
 179     // renderer's state.
 180     bool IsFormattingCell() const { return m_Width == 0 && m_Height == 0; }
 181
 182     const wxString& GetId() const { return m_id; }
 183     void SetId(const wxString& id) { m_id = id; }
 184
 185     // returns the link associated with this cell. The position is position
 186     // within the cell so it varies from 0 to m_Width, from 0 to m_Height
 187     virtual wxHtmlLinkInfo* GetLink(int WXUNUSED(x) = 0,
 188                                     int WXUNUSED(y) = 0) const
 189         { return m_Link; }
 190
 191     // Returns cursor to be used when mouse is over the cell:
 192     virtual wxCursor GetCursor() const;
 193
 194     // return next cell among parent's cells
 195     wxHtmlCell *GetNext() const {return m_Next;}
 196     // returns first child cell (if there are any, i.e. if this is container):
 197     virtual wxHtmlCell* GetFirstChild() const { return NULL; }
 198
 199     // members writing methods
 200     virtual void SetPos(int x, int y) {m_PosX = x, m_PosY = y;}
 201     void SetLink(const wxHtmlLinkInfo& link);
 202     void SetNext(wxHtmlCell *cell) {m_Next = cell;}
 203
 204     // 1. adjust cell's width according to the fact that maximal possible width
 205     //    is w.  (this has sense when working with horizontal lines, tables
 206     //    etc.)
 207     // 2. prepare layout (=fill-in m_PosX, m_PosY (and sometime m_Height)
 208     //    members) = place items to fit window, according to the width w
 209     virtual void Layout(int w);
 210
 211     // renders the cell
 212     virtual void Draw(wxDC& WXUNUSED(dc),
 213                       int WXUNUSED(x), int WXUNUSED(y),
 214                       int WXUNUSED(view_y1), int WXUNUSED(view_y2),
 215                       wxHtmlRenderingInfo& WXUNUSED(info)) {}
 216
 217     // proceed drawing actions in case the cell is not visible (scrolled out of
 218     // screen).  This is needed to change fonts, colors and so on.
 219     virtual void DrawInvisible(wxDC& WXUNUSED(dc),
 220                                int WXUNUSED(x), int WXUNUSED(y),
 221                                wxHtmlRenderingInfo& WXUNUSED(info)) {}
 222
 223     // This method returns pointer to the FIRST cell for that
 224     // the condition
 225     // is true. It first checks if the condition is true for this
 226     // cell and then calls m_Next->Find(). (Note: it checks
 227     // all subcells if the cell is container)
 228     // Condition is unique condition identifier (see htmldefs.h)
 229     // (user-defined condition IDs should start from 10000)
 230     // and param is optional parameter
 231     // Example : m_Cell->Find(wxHTML_COND_ISANCHOR, "news");
 232     //   returns pointer to anchor news
 233     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 234
 235     // This function is called when mouse button is clicked over the cell.
 236     //
 237     // Parent is pointer to wxHtmlWindow that generated the event
 238     // HINT: if this handling is not enough for you you should use
 239     //       wxHtmlWidgetCell
 240     virtual void OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event);
 241
 242     // This method used to adjust pagebreak position. The parameter is variable
 243     // that contains y-coordinate of page break (= horizontal line that should
 244     // not be crossed by words, images etc.). If this cell cannot be divided
 245     // into two pieces (each one on another page) then it moves the pagebreak
 246     // few pixels up.
 247     //
 248     // Returned value : true if pagebreak was modified, false otherwise
 249     // Usage : while (container->AdjustPagebreak(&p)) {}
 250     virtual bool AdjustPagebreak(int *pagebreak,
 251                                  int *known_pagebreaks = NULL,
 252                                  int number_of_pages = 0) const;
 253
 254     // Sets cell's behaviour on pagebreaks (see AdjustPagebreak). Default
 255     // is true - the cell can be split on two pages
 256     void SetCanLiveOnPagebreak(bool can) { m_CanLiveOnPagebreak = can; }
 257
 258     // Can the line be broken before this cell?
 259     virtual bool IsLinebreakAllowed() const
 260         { return !IsFormattingCell(); }
 261
 262     // Returns y-coordinates that contraint the cell, i.e. left is highest
 263     // and right lowest coordinate such that the cell lays between then.
 264     // Note: this method does not return meaningful values if you haven't
 265     //       called Layout() before!
 266     virtual void GetHorizontalConstraints(int *left, int *right) const;
 267
 268     // Returns true for simple == terminal cells, i.e. not composite ones.
 269     // This if for internal usage only and may disappear in future versions!
 270     virtual bool IsTerminalCell() const { return TRUE; }
 271
 272     // Find a cell inside this cell positioned at the given coordinates
 273     // (relative to this's positions). Returns NULL if no such cell exists.
 274     // The flag can be used to specify whether to look for terminal or
 275     // nonterminal cells or both. In either case, returned cell is deepest
 276     // cell in cells tree that contains [x,y].
 277     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 278                                   unsigned flags = wxHTML_FIND_EXACT) const;
 279
 280     // Returns absolute position of the cell on HTML canvas
 281     wxPoint GetAbsPos() const;
 282
 283     // Returns first (last) terminal cell inside this cell. It may return NULL,
 284     // but it is rare -- only if there are no terminals in the tree.
 285     virtual wxHtmlCell *GetFirstTerminal() const
 286         { return wxConstCast(this, wxHtmlCell); }
 287     virtual wxHtmlCell *GetLastTerminal() const
 288         { return wxConstCast(this, wxHtmlCell); }
 289
 290     // Returns cell's depth, i.e. how far under the root cell it is
 291     // (if it is the root, depth is 0)
 292     unsigned GetDepth() const;
 293
 294     // Returns true if the cell appears before 'cell' in natural order of
 295     // cells (= as they are read). If cell A is (grand)parent of cell B,
 296     // then both A.IsBefore(B) and B.IsBefore(A) always return true.
 297     bool IsBefore(wxHtmlCell *cell) const;
 298
 299     // Converts the cell into text representation. If sel != NULL then
 300     // only part of the cell inside the selection is converted.
 301     virtual wxString ConvertToText(wxHtmlSelection *WXUNUSED(sel)) const
 302         { return wxEmptyString; }
 303
 304 protected:
 305     wxHtmlCell *m_Next;
 306             // pointer to the next cell
 307     wxHtmlContainerCell *m_Parent;
 308             // pointer to parent cell
 309     long m_Width, m_Height, m_Descent;
 310             // dimensions of fragment
 311             // m_Descent is used to position text&images..
 312     long m_PosX, m_PosY;
 313             // position where the fragment is drawn
 314     wxHtmlLinkInfo *m_Link;
 315             // destination address if this fragment is hypertext link, NULL otherwise
 316     bool m_CanLiveOnPagebreak;
 317             // true if this cell can be placed on pagebreak, false otherwise
 318     wxString m_id;
 319             // unique identifier of the cell, generated from "id" property of tags
 320
 321     DECLARE_NO_COPY_CLASS(wxHtmlCell)
 322 };
 323
 324
 325
 326
 327 // ----------------------------------------------------------------------------
 328 // Inherited cells:
 329 // ----------------------------------------------------------------------------
 330
 331
 332 // ----------------------------------------------------------------------------
 333 // wxHtmlWordCell
 334 //                  Single word in input stream.
 335 // ----------------------------------------------------------------------------
 336
 337 class WXDLLIMPEXP_HTML wxHtmlWordCell : public wxHtmlCell
 338 {
 339 public:
 340     wxHtmlWordCell(const wxString& word, wxDC& dc);
 341     void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 342               wxHtmlRenderingInfo& info);
 343     wxCursor GetCursor() const;
 344     wxString ConvertToText(wxHtmlSelection *sel) const;
 345     bool IsLinebreakAllowed() const { return m_allowLinebreak; }
 346
 347     void SetPreviousWord(wxHtmlWordCell *cell);
 348
 349 protected:
 350     void SetSelectionPrivPos(wxDC& dc, wxHtmlSelection *s) const;
 351     void Split(wxDC& dc,
 352                const wxPoint& selFrom, const wxPoint& selTo,
 353                unsigned& pos1, unsigned& pos2) const;
 354
 355     wxString m_Word;
 356     bool     m_allowLinebreak;
 357 };
 358
 359
 360
 361
 362
 363 // Container contains other cells, thus forming tree structure of rendering
 364 // elements. Basic code of layout algorithm is contained in this class.
 365 class WXDLLIMPEXP_HTML wxHtmlContainerCell : public wxHtmlCell
 366 {
 367 public:
 368     wxHtmlContainerCell(wxHtmlContainerCell *parent);
 369     ~wxHtmlContainerCell();
 370
 371     virtual void Layout(int w);
 372     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 373                       wxHtmlRenderingInfo& info);
 374     virtual void DrawInvisible(wxDC& dc, int x, int y,
 375                                wxHtmlRenderingInfo& info);
 376     virtual bool AdjustPagebreak(int *pagebreak, int *known_pagebreaks = NULL, int number_of_pages = 0) const;
 377
 378     // insert cell at the end of m_Cells list
 379     void InsertCell(wxHtmlCell *cell);
 380
 381     // sets horizontal/vertical alignment
 382     void SetAlignHor(int al) {m_AlignHor = al; m_LastLayout = -1;}
 383     int GetAlignHor() const {return m_AlignHor;}
 384     void SetAlignVer(int al) {m_AlignVer = al; m_LastLayout = -1;}
 385     int GetAlignVer() const {return m_AlignVer;}
 386
 387     // sets left-border indentation. units is one of wxHTML_UNITS_* constants
 388     // what is combination of wxHTML_INDENT_*
 389     void SetIndent(int i, int what, int units = wxHTML_UNITS_PIXELS);
 390     // returns the indentation. ind is one of wxHTML_INDENT_* constants
 391     int GetIndent(int ind) const;
 392     // returns type of value returned by GetIndent(ind)
 393     int GetIndentUnits(int ind) const;
 394
 395     // sets alignment info based on given tag's params
 396     void SetAlign(const wxHtmlTag& tag);
 397     // sets floating width adjustment
 398     // (examples : 32 percent of parent container,
 399     // -15 pixels percent (this means 100 % - 15 pixels)
 400     void SetWidthFloat(int w, int units) {m_WidthFloat = w; m_WidthFloatUnits = units; m_LastLayout = -1;}
 401     void SetWidthFloat(const wxHtmlTag& tag, double pixel_scale = 1.0);
 402     // sets minimal height of this container.
 403     void SetMinHeight(int h, int align = wxHTML_ALIGN_TOP) {m_MinHeight = h; m_MinHeightAlign = align; m_LastLayout = -1;}
 404
 405     void SetBackgroundColour(const wxColour& clr) {m_UseBkColour = TRUE; m_BkColour = clr;}
 406     // returns background colour (of wxNullColour if none set), so that widgets can
 407     // adapt to it:
 408     wxColour GetBackgroundColour();
 409     void SetBorder(const wxColour& clr1, const wxColour& clr2) {m_UseBorder = TRUE; m_BorderColour1 = clr1, m_BorderColour2 = clr2;}
 410     virtual wxHtmlLinkInfo* GetLink(int x = 0, int y = 0) const;
 411     virtual const wxHtmlCell* Find(int condition, const void* param) const;
 412     virtual void OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event);
 413     virtual void GetHorizontalConstraints(int *left, int *right) const;
 414
 415     virtual wxHtmlCell* GetFirstChild() const { return m_Cells; }
 416 #if WXWIN_COMPATIBILITY_2_4
 417     wxDEPRECATED( wxHtmlCell* GetFirstCell() const );
 418 #endif
 419
 420     // see comment in wxHtmlCell about this method
 421     virtual bool IsTerminalCell() const { return FALSE; }
 422
 423     virtual wxHtmlCell *FindCellByPos(wxCoord x, wxCoord y,
 424                                   unsigned flags = wxHTML_FIND_EXACT) const;
 425
 426     virtual wxHtmlCell *GetFirstTerminal() const;
 427     virtual wxHtmlCell *GetLastTerminal() const;
 428
 429 protected:
 430     void UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
 431                                  wxHtmlCell *cell) const;
 432     void UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
 433                                   wxHtmlCell *cell) const;
 434
 435 protected:
 436     int m_IndentLeft, m_IndentRight, m_IndentTop, m_IndentBottom;
 437             // indentation of subcells. There is always m_Indent pixels
 438             // big space between given border of the container and the subcells
 439             // it m_Indent < 0 it is in PERCENTS, otherwise it is in pixels
 440     int m_MinHeight, m_MinHeightAlign;
 441         // minimal height.
 442     wxHtmlCell *m_Cells, *m_LastCell;
 443             // internal cells, m_Cells points to the first of them, m_LastCell to the last one.
 444             // (LastCell is needed only to speed-up InsertCell)
 445     int m_AlignHor, m_AlignVer;
 446             // alignment horizontal and vertical (left, center, right)
 447     int m_WidthFloat, m_WidthFloatUnits;
 448             // width float is used in adjustWidth
 449     bool m_UseBkColour;
 450     wxColour m_BkColour;
 451             // background color of this container
 452     bool m_UseBorder;
 453     wxColour m_BorderColour1, m_BorderColour2;
 454             // borders color of this container
 455     int m_LastLayout;
 456             // if != -1 then call to Layout may be no-op
 457             // if previous call to Layout has same argument
 458
 459     DECLARE_NO_COPY_CLASS(wxHtmlContainerCell)
 460 };
 461
 462 #if WXWIN_COMPATIBILITY_2_4
 463 inline wxHtmlCell* wxHtmlContainerCell::GetFirstCell() const
 464     { return GetFirstChild(); }
 465 #endif
 466
 467
 468
 469
 470 // ---------------------------------------------------------------------------
 471 // wxHtmlColourCell
 472 //                  Color changer.
 473 // ---------------------------------------------------------------------------
 474
 475 class WXDLLIMPEXP_HTML wxHtmlColourCell : public wxHtmlCell
 476 {
 477 public:
 478     wxHtmlColourCell(const wxColour& clr, int flags = wxHTML_CLR_FOREGROUND) : wxHtmlCell() {m_Colour = clr; m_Flags = flags;}
 479     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 480                       wxHtmlRenderingInfo& info);
 481     virtual void DrawInvisible(wxDC& dc, int x, int y,
 482                                wxHtmlRenderingInfo& info);
 483
 484 protected:
 485     wxColour m_Colour;
 486     unsigned m_Flags;
 487 };
 488
 489
 490
 491
 492 //--------------------------------------------------------------------------------
 493 // wxHtmlFontCell
 494 //                  Sets actual font used for text rendering
 495 //--------------------------------------------------------------------------------
 496
 497 class WXDLLIMPEXP_HTML wxHtmlFontCell : public wxHtmlCell
 498 {
 499 public:
 500     wxHtmlFontCell(wxFont *font) : wxHtmlCell() { m_Font = (*font); }
 501     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 502                       wxHtmlRenderingInfo& info);
 503     virtual void DrawInvisible(wxDC& dc, int x, int y,
 504                                wxHtmlRenderingInfo& info);
 505
 506 protected:
 507     wxFont m_Font;
 508 };
 509
 510
 511
 512
 513
 514
 515 //--------------------------------------------------------------------------------
 516 // wxHtmlwidgetCell
 517 //                  This cell is connected with wxWindow object
 518 //                  You can use it to insert windows into HTML page
 519 //                  (buttons, input boxes etc.)
 520 //--------------------------------------------------------------------------------
 521
 522 class WXDLLIMPEXP_HTML wxHtmlWidgetCell : public wxHtmlCell
 523 {
 524 public:
 525     // !!! wnd must have correct parent!
 526     // if w != 0 then the m_Wnd has 'floating' width - it adjust
 527     // it's width according to parent container's width
 528     // (w is percent of parent's width)
 529     wxHtmlWidgetCell(wxWindow *wnd, int w = 0);
 530     ~wxHtmlWidgetCell() { m_Wnd->Destroy(); }
 531     virtual void Draw(wxDC& dc, int x, int y, int view_y1, int view_y2,
 532                       wxHtmlRenderingInfo& info);
 533     virtual void DrawInvisible(wxDC& dc, int x, int y,
 534                                wxHtmlRenderingInfo& info);
 535     virtual void Layout(int w);
 536
 537 protected:
 538     wxWindow* m_Wnd;
 539     int m_WidthFloat;
 540             // width float is used in adjustWidth (it is in percents)
 541
 542     DECLARE_NO_COPY_CLASS(wxHtmlWidgetCell)
 543 };
 544
 545
 546
 547 //--------------------------------------------------------------------------------
 548 // wxHtmlLinkInfo
 549 //                  Internal data structure. It represents hypertext link
 550 //--------------------------------------------------------------------------------
 551
 552 class WXDLLIMPEXP_HTML wxHtmlLinkInfo : public wxObject
 553 {
 554 public:
 555     wxHtmlLinkInfo() : wxObject()
 556           { m_Href = m_Target = wxEmptyString; m_Event = NULL, m_Cell = NULL; }
 557     wxHtmlLinkInfo(const wxString& href, const wxString& target = wxEmptyString) : wxObject()
 558           { m_Href = href; m_Target = target; m_Event = NULL, m_Cell = NULL; }
 559     wxHtmlLinkInfo(const wxHtmlLinkInfo& l) : wxObject()
 560           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 561             m_Cell = l.m_Cell; }
 562     wxHtmlLinkInfo& operator=(const wxHtmlLinkInfo& l)
 563           { m_Href = l.m_Href, m_Target = l.m_Target, m_Event = l.m_Event;
 564             m_Cell = l.m_Cell; return *this; }
 565
 566     void SetEvent(const wxMouseEvent *e) { m_Event = e; }
 567     void SetHtmlCell(const wxHtmlCell *e) { m_Cell = e; }
 568
 569     wxString GetHref() const { return m_Href; }
 570     wxString GetTarget() const { return m_Target; }
 571     const wxMouseEvent* GetEvent() const { return m_Event; }
 572     const wxHtmlCell* GetHtmlCell() const { return m_Cell; }
 573
 574 private:
 575     wxString m_Href, m_Target;
 576     const wxMouseEvent *m_Event;
 577     const wxHtmlCell *m_Cell;
 578 };
 579
 580
 581
 582 // ----------------------------------------------------------------------------
 583 // wxHtmlTerminalCellsInterator
 584 // ----------------------------------------------------------------------------
 585
 586 class WXDLLIMPEXP_HTML wxHtmlTerminalCellsInterator
 587 {
 588 public:
 589     wxHtmlTerminalCellsInterator(const wxHtmlCell *from, const wxHtmlCell *to)
 590         : m_to(to), m_pos(from) {}
 591
 592     operator bool() const { return m_pos != NULL; }
 593     const wxHtmlCell* operator++();
 594     const wxHtmlCell* operator->() const { return m_pos; }
 595     const wxHtmlCell* operator*() const { return m_pos; }
 596
 597 private:
 598     const wxHtmlCell *m_to, *m_pos;
 599 };
 600
 601
 602
 603 #endif // wxUSE_HTML
 604
 605 #endif // _WX_HTMLCELL_H_
 606