Class: Nokogiri::HTML4::ElementDescription

Inherits:
Object
  • Object
show all
Defined in:
lib/nokogiri/html4/element_description.rb,
lib/nokogiri/html4/element_description_defaults.rb,
ext/nokogiri/html4_element_description.c

Defined Under Namespace

Classes: Desc

Constant Summary collapse

DefaultDescriptions =

This is filled in down below.

{}
FONTSTYLE =

Attributes defined and categorized

["tt", "i", "b", "u", "s", "strike", "big", "small"]
PHRASE = 
["em", "strong", "dfn", "code", "samp",
"kbd", "var", "cite", "abbr", "acronym",]
SPECIAL = 
["a", "img", "applet", "embed", "object", "font", "basefont",
"br", "script", "map", "q", "sub", "sup", "span", "bdo",
"iframe",]
PCDATA = 
[]
HEADING = 
["h1", "h2", "h3", "h4", "h5", "h6"]
LIST = 
["ul", "ol", "dir", "menu"]
FORMCTRL = 
["input", "select", "textarea", "label", "button"]
BLOCK = 
[HEADING, LIST, "pre", "p", "dl", "div", "center", "noscript",
"noframes", "blockquote", "form", "isindex", "hr", "table",
"fieldset", "address",]
INLINE = 
[PCDATA, FONTSTYLE, PHRASE, SPECIAL, FORMCTRL]
FLOW = 
[BLOCK, INLINE]
MODIFIER = 
[]
EMPTY = 
[]
HTML_FLOW = 
FLOW
HTML_INLINE = 
INLINE
HTML_PCDATA = 
PCDATA
HTML_CDATA = 
HTML_PCDATA
COREATTRS = 
["id", "class", "style", "title"]
I18N = 
["lang", "dir"]
EVENTS = 
["onclick", "ondblclick", "onmousedown", "onmouseup",
"onmouseover", "onmouseout", "onkeypress", "onkeydown",
"onkeyup",]
ATTRS = 
[COREATTRS, I18N, EVENTS]
CELLHALIGN = 
["align", "char", "charoff"]
CELLVALIGN = 
["valign"]
HTML_ATTRS = 
ATTRS
CORE_I18N_ATTRS = 
[COREATTRS, I18N]
CORE_ATTRS = 
COREATTRS
I18N_ATTRS = 
I18N
A_ATTRS = 
[ATTRS, "charset", "type", "name",
"href", "hreflang", "rel", "rev", "accesskey", "shape",
"coords", "tabindex", "onfocus", "onblur",]
TARGET_ATTR = 
["target"]
ROWS_COLS_ATTR = 
["rows", "cols"]
ALT_ATTR = 
["alt"]
SRC_ALT_ATTRS = 
["src", "alt"]
HREF_ATTRS = 
["href"]
CLEAR_ATTRS = 
["clear"]
INLINE_P = 
[INLINE, "p"]
FLOW_PARAM = 
[FLOW, "param"]
APPLET_ATTRS = 
[COREATTRS, "codebase",
"archive", "alt", "name", "height", "width", "align",
"hspace", "vspace",]
AREA_ATTRS = 
["shape", "coords", "href", "nohref",
"tabindex", "accesskey", "onfocus", "onblur",]
BASEFONT_ATTRS = 
["id", "size", "color", "face"]
QUOTE_ATTRS = 
[ATTRS, "cite"]
BODY_CONTENTS = 
[FLOW, "ins", "del"]
BODY_ATTRS = 
[ATTRS, "onload", "onunload"]
BODY_DEPR = 
["background", "bgcolor", "text",
"link", "vlink", "alink",]
BUTTON_ATTRS = 
[ATTRS, "name", "value", "type",
"disabled", "tabindex", "accesskey", "onfocus", "onblur",]
COL_ATTRS = 
[ATTRS, "span", "width", CELLHALIGN, CELLVALIGN]
COL_ELT = 
["col"]
EDIT_ATTRS = 
[ATTRS, "datetime", "cite"]
COMPACT_ATTRS = 
[ATTRS, "compact"]
DL_CONTENTS = 
["dt", "dd"]
COMPACT_ATTR = 
["compact"]
LABEL_ATTR = 
["label"]
FIELDSET_CONTENTS = 
[FLOW, "legend"]
FONT_ATTRS = 
[COREATTRS, I18N, "size", "color", "face"]
FORM_CONTENTS = 
[HEADING, LIST, INLINE, "pre", "p", "div", "center",
"noscript", "noframes", "blockquote", "isindex", "hr",
"table", "fieldset", "address",]
FORM_ATTRS = 
[ATTRS, "method", "enctype", "accept", "name", "onsubmit",
"onreset", "accept-charset",]
FRAME_ATTRS = 
[COREATTRS, "longdesc", "name", "src", "frameborder",
"marginwidth", "marginheight", "noresize", "scrolling",]
FRAMESET_ATTRS = 
[COREATTRS, "rows", "cols", "onload", "onunload"]
FRAMESET_CONTENTS = 
["frameset", "frame", "noframes"]
HEAD_ATTRS = 
[I18N, "profile"]
HEAD_CONTENTS = 
["title", "isindex", "base", "script", "style", "meta",
"link", "object",]
HR_DEPR = 
["align", "noshade", "size", "width"]
VERSION_ATTR = 
["version"]
HTML_CONTENT = 
["head", "body", "frameset"]
IFRAME_ATTRS = 
[COREATTRS, "longdesc", "name", "src", "frameborder",
"marginwidth", "marginheight", "scrolling", "align",
"height", "width",]
IMG_ATTRS = 
[ATTRS, "longdesc", "name", "height", "width", "usemap",
"ismap",]
EMBED_ATTRS = 
[COREATTRS, "align", "alt", "border", "code", "codebase",
"frameborder", "height", "hidden", "hspace", "name",
"palette", "pluginspace", "pluginurl", "src", "type",
"units", "vspace", "width",]
INPUT_ATTRS = 
[ATTRS, "type", "name", "value", "checked", "disabled",
"readonly", "size", "maxlength", "src", "alt", "usemap",
"ismap", "tabindex", "accesskey", "onfocus", "onblur",
"onselect", "onchange", "accept",]
PROMPT_ATTRS = 
[COREATTRS, I18N, "prompt"]
LABEL_ATTRS = 
[ATTRS, "for", "accesskey", "onfocus", "onblur"]
LEGEND_ATTRS = 
[ATTRS, "accesskey"]
ALIGN_ATTR = 
["align"]
[ATTRS, "charset", "href", "hreflang", "type", "rel", "rev",
"media",]
MAP_CONTENTS = 
[BLOCK, "area"]
NAME_ATTR = 
["name"]
ACTION_ATTR = 
["action"]
BLOCKLI_ELT = 
[BLOCK, "li"]
META_ATTRS = 
[I18N, "http-equiv", "name", "scheme"]
CONTENT_ATTR = 
["content"]
TYPE_ATTR = 
["type"]
NOFRAMES_CONTENT = 
["body", FLOW, MODIFIER]
OBJECT_CONTENTS = 
[FLOW, "param"]
OBJECT_ATTRS = 
[ATTRS, "declare", "classid", "codebase", "data", "type",
"codetype", "archive", "standby", "height", "width",
"usemap", "name", "tabindex",]
OBJECT_DEPR = 
["align", "border", "hspace", "vspace"]
OL_ATTRS = 
["type", "compact", "start"]
OPTION_ELT = 
["option"]
OPTGROUP_ATTRS = 
[ATTRS, "disabled"]
OPTION_ATTRS = 
[ATTRS, "disabled", "label", "selected", "value"]
PARAM_ATTRS = 
["id", "value", "valuetype", "type"]
WIDTH_ATTR = 
["width"]
PRE_CONTENT = 
[PHRASE, "tt", "i", "b", "u", "s", "strike", "a", "br",
"script", "map", "q", "span", "bdo", "iframe",]
SCRIPT_ATTRS = 
["charset", "src", "defer", "event", "for"]
LANGUAGE_ATTR = 
["language"]
SELECT_CONTENT = 
["optgroup", "option"]
SELECT_ATTRS = 
[ATTRS, "name", "size", "multiple", "disabled", "tabindex",
"onfocus", "onblur", "onchange",]
STYLE_ATTRS = 
[I18N, "media", "title"]
TABLE_ATTRS = 
[ATTRS, "summary", "width", "border", "frame", "rules",
"cellspacing", "cellpadding", "datapagesize",]
TABLE_DEPR = 
["align", "bgcolor"]
TABLE_CONTENTS = 
["caption", "col", "colgroup", "thead", "tfoot", "tbody",
"tr",]
TR_ELT = 
["tr"]
TALIGN_ATTRS = 
[ATTRS, CELLHALIGN, CELLVALIGN]
TH_TD_DEPR = 
["nowrap", "bgcolor", "width", "height"]
TH_TD_ATTR = 
[ATTRS, "abbr", "axis", "headers", "scope", "rowspan",
"colspan", CELLHALIGN, CELLVALIGN,]
TEXTAREA_ATTRS = 
[ATTRS, "name", "disabled", "readonly", "tabindex",
"accesskey", "onfocus", "onblur", "onselect",
"onchange",]
TR_CONTENTS = 
["th", "td"]
BGCOLOR_ATTR = 
["bgcolor"]
LI_ELT = 
["li"]
UL_DEPR = 
["type", "compact"]
DIR_ATTR = 
["dir"]

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.[](tag_name) ⇒ Object

Get ElemementDescription for tag_name



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# File 'ext/nokogiri/html4_element_description.c', line 261

static VALUE
get_description(VALUE klass, VALUE tag_name)
{
  const htmlElemDesc *description = htmlTagLookup(
                                      (const xmlChar *)StringValueCStr(tag_name)
                                    );

  if (NULL == description) { return Qnil; }
  return Data_Wrap_Struct(klass, 0, 0, DISCARD_CONST_QUAL(void *, description));
}

Instance Method Details

#block? ⇒ Boolean

Is this element a block element?

Returns:

  • (Boolean) 


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# File 'lib/nokogiri/html4/element_description.rb', line 8

def block?
  !inline?
end

#default_sub_element ⇒ Object

The default sub element for this element



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# File 'ext/nokogiri/html4_element_description.c', line 89

def default_sub_element
  d = default_desc
  d ? d.defaultsubelt : nil
end

#deprecated? ⇒ Boolean

Is this element deprecated?

Returns:

  • (Boolean) 


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# File 'ext/nokogiri/html4_element_description.c', line 165

def deprecated?
  d = default_desc
  d ? d.depr : nil
end

#deprecated_attributes ⇒ Object

A list of deprecated attributes for this element



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# File 'ext/nokogiri/html4_element_description.c', line 37

def deprecated_attributes
  d = default_desc
  d ? d.attrs_depr : []
end

#description ⇒ Object

The description for this element



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# File 'ext/nokogiri/html4_element_description.c', line 134

def description
  d = default_desc
  d ? d.desc : nil
end

#empty? ⇒ Boolean

Is this an empty element?

Returns:

  • (Boolean) 


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# File 'ext/nokogiri/html4_element_description.c', line 181

static VALUE
empty_eh(VALUE self)
{
  const htmlElemDesc *description;
  Data_Get_Struct(self, htmlElemDesc, description);

  if (description->empty) { return Qtrue; }
  return Qfalse;
}

#implied_end_tag? ⇒ Boolean

Can the end tag be implied for this tag?

Returns:

  • (Boolean) 


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# File 'ext/nokogiri/html4_element_description.c', line 213

def implied_end_tag?
  d = default_desc
  d ? d.endTag : nil
end

#implied_start_tag? ⇒ Boolean

Can the start tag be implied for this tag?

Returns:

  • (Boolean) 


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# File 'ext/nokogiri/html4_element_description.c', line 229

def implied_start_tag?
  d = default_desc
  d ? d.startTag : nil
end

#inline? ⇒ Boolean

Is this element an inline element?

Returns:

  • (Boolean) 


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# File 'ext/nokogiri/html4_element_description.c', line 149

static VALUE
inline_eh(VALUE self)
{
  const htmlElemDesc *description;
  Data_Get_Struct(self, htmlElemDesc, description);

  if (description->isinline) { return Qtrue; }
  return Qfalse;
}

#inspect ⇒ Object

Inspection information



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# File 'lib/nokogiri/html4/element_description.rb', line 20

def inspect
  "#<#{self.class.name}: #{name} #{description}>"
end

#name ⇒ Object

Get the tag name for this ElemementDescription



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# File 'ext/nokogiri/html4_element_description.c', line 245

static VALUE
name(VALUE self)
{
  const htmlElemDesc *description;
  Data_Get_Struct(self, htmlElemDesc, description);

  if (NULL == description->name) { return Qnil; }
  return NOKOGIRI_STR_NEW2(description->name);
}

#optional_attributes ⇒ Object

A list of optional attributes for this element



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# File 'ext/nokogiri/html4_element_description.c', line 63

def optional_attributes
  d = default_desc
  d ? d.attrs_opt : []
end

#required_attributes ⇒ Object

A list of required attributes for this element



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# File 'ext/nokogiri/html4_element_description.c', line 11

def required_attributes
  d = default_desc
  d ? d.attrs_req : []
end

#save_end_tag? ⇒ Boolean

Should the end tag be saved?

Returns:

  • (Boolean) 


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# File 'ext/nokogiri/html4_element_description.c', line 197

def save_end_tag?
  d = default_desc
  d ? d.saveEndTag : nil
end

#sub_elements ⇒ Object

A list of allowed sub elements for this element.



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# File 'ext/nokogiri/html4_element_description.c', line 108

static VALUE
sub_elements(VALUE self)
{
  const htmlElemDesc *description;
  VALUE list;
  int i;

  Data_Get_Struct(self, htmlElemDesc, description);

  list = rb_ary_new();

  if (NULL == description->subelts) { return list; }

  for (i = 0; description->subelts[i]; i++) {
    rb_ary_push(list, NOKOGIRI_STR_NEW2(description->subelts[i]));
  }

  return list;
}

#to_s ⇒ Object

Convert this description to a string



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# File 'lib/nokogiri/html4/element_description.rb', line 14

def to_s
  "#{name}: #{description}"
end