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