interface/html/htmltag.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        html/htmltag.h
   3 // Purpose:     interface of wxHtmlTag
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxHtmlTag
  11     @headerfile htmltag.h wx/html/htmltag.h
  12
  13     This class represents a single HTML tag.
  14     It is used by @ref overview_handlers "tag handlers".
  15
  16     @library{wxhtml}
  17     @category{FIXME}
  18 */
  19 class wxHtmlTag
  20 {
  21 public:
  22     /**
  23         Constructor. You will probably never have to construct a wxHtmlTag object
  24         yourself. Feel free to ignore the constructor parameters.
  25         Have a look at src/html/htmlpars.cpp if you're interested in creating it.
  26     */
  27     wxHtmlTag(wxHtmlTag* parent, const wxString& source, int pos,
  28               int end_pos, wxHtmlTagsCache* cache,
  29               wxHtmlEntitiesParser* entParser);
  30
  31     /**
  32         Returns a string containing all parameters.
  33         Example : tag contains @c FONT SIZE=+2 COLOR="#000000". Call to
  34         tag.GetAllParams() would return @c SIZE=+2 COLOR="#000000".
  35     */
  36     const wxString GetAllParams() const;
  37
  38     /**
  39         Returns beginning position of the text @e between this tag and paired
  40         ending tag.
  41         See explanation (returned position is marked with '|'):
  42     */
  43     int GetBeginPos() const;
  44
  45     /**
  46         Returns ending position of the text @e between this tag and paired
  47         ending tag.
  48         See explanation (returned position is marked with '|'):
  49     */
  50     int GetEndPos1() const;
  51
  52     /**
  53         Returns ending position 2 of the text @e between this tag and paired
  54         ending tag.
  55         See explanation (returned position is marked with '|'):
  56     */
  57     int GetEndPos2() const;
  58
  59     /**
  60         Returns tag's name. The name is always in uppercase and it doesn't contain
  61         " or '/' characters. (So the name of @c FONT SIZE=+2 tag is "FONT"
  62         and name of @c /table is "TABLE")
  63     */
  64     wxString GetName() const;
  65
  66     /**
  67         Returns the value of the parameter. You should check whether the
  68         parameter exists or not (use wxHtmlTag::HasParam) first.
  69
  70         @param par
  71             The parameter's name.
  72         @param with_quotes
  73             @true if you want to get quotes as well. See example.
  74     */
  75     wxString GetParam(const wxString& par, bool with_quotes = false) const;
  76
  77     /**
  78         Interprets tag parameter @a par as colour specification and saves its value
  79         into wxColour variable pointed by @e clr.
  80         Returns @true on success and @false if @a par is not colour specification or
  81         if the tag has no such parameter.
  82     */
  83     bool GetParamAsColour(const wxString& par, wxColour* clr) const;
  84
  85     /**
  86         Interprets tag parameter @a par as an integer and saves its value
  87         into int variable pointed by @e value.
  88         Returns @true on success and @false if @a par is not an integer or
  89         if the tag has no such parameter.
  90     */
  91     bool GetParamAsInt(const wxString& par, int* value) const;
  92
  93     /**
  94         Returns @true if this tag is paired with ending tag, @false otherwise.
  95         See the example of HTML document:
  96
  97         In this example tags HTML and BODY have ending tags, first P and BR
  98         doesn't have ending tag while the second P has. The third P tag (which
  99         is ending itself) of course doesn't have ending tag.
 100     */
 101     bool HasEnding() const;
 102
 103     /**
 104         Returns @true if the tag has a parameter of the given name.
 105         Example : @c FONT SIZE=+2 COLOR="#FF00FF" has two parameters named
 106         "SIZE" and "COLOR".
 107
 108         @param par
 109             the parameter you're looking for.
 110     */
 111     bool HasParam(const wxString& par) const;
 112
 113     /**
 114         This method scans the given parameter. Usage is exactly the same as sscanf's
 115         usage except that you don't pass a string but a parameter name as the first
 116         argument
 117         and you can only retrieve one value (i.e. you can use only one "%" element
 118         in @e format).
 119
 120         @param par
 121             The name of the tag you want to query
 122         @param format
 123             scanf()-like format string.
 124         @param value
 125             pointer to a variable to store the value in
 126     */
 127     wxString ScanParam(const wxString& par, const wxChar* format,
 128                        void* value) const;
 129 };
 130