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<?php
// todo: test if an attribute is a url
// keep nonclosing tag only
// add more utility methods (e.g. render....)
// implment encoding (for text and url)
class THtmlWriter extends TComponent implements ITextWriter
{
const TAG_INLINE=0;
const TAG_NONCLOSING=1;
const TAG_OTHER=2;
const CHAR_NEWLINE="\n";
const CHAR_TAB="\t";
private static $_tagTypes=array(
'*'=>2,
'a'=>0,
'acronym'=>0,
'address'=>2,
'area'=>1,
'b'=>0,
'base'=>1,
'basefont'=>1,
'bdo'=>0,
'bgsound'=>1,
'big'=>0,
'blockquote'=>2,
'body'=>2,
'br'=>2,
'button'=>0,
'caption'=>2,
'center'=>2,
'cite'=>0,
'code'=>0,
'col'=>1,
'colgroup'=>2,
'del'=>0,
'dd'=>0,
'dfn'=>0,
'dir'=>2,
'div'=>2,
'dl'=>2,
'dt'=>0,
'em'=>0,
'embed'=>1,
'fieldset'=>2,
'font'=>0,
'form'=>2,
'frame'=>1,
'frameset'=>2,
'h1'=>2,
'h2'=>2,
'h3'=>2,
'h4'=>2,
'h5'=>2,
'h6'=>2,
'head'=>2,
'hr'=>1,
'html'=>2,
'i'=>0,
'iframe'=>2,
'img'=>1,
'input'=>1,
'ins'=>0,
'isindex'=>1,
'kbd'=>0,
'label'=>0,
'legend'=>2,
'li'=>0,
'link'=>1,
'map'=>2,
'marquee'=>2,
'menu'=>2,
'meta'=>1,
'nobr'=>0,
'noframes'=>2,
'noscript'=>2,
'object'=>2,
'ol'=>2,
'option'=>2,
'p'=>0,
'param'=>2,
'pre'=>2,
'ruby'=>2,
'rt'=>2,
'q'=>0,
's'=>0,
'samp'=>0,
'script'=>2,
'select'=>2,
'small'=>2,
'span'=>0,
'strike'=>0,
'strong'=>0,
'style'=>2,
'sub'=>0,
'sup'=>0,
'table'=>2,
'tbody'=>2,
'td'=>0,
'textarea'=>0,
'tfoot'=>2,
'th'=>0,
'thead'=>2,
'title'=>2,
'tr'=>2,
'tt'=>0,
'u'=>0,
'ul'=>2,
'var'=>0,
'wbr'=>1,
'xml'=>2
);
private static $_attrEncode=array(
'abbr'=>true,
'accesskey'=>true,
'alt'=>true,
'axis'=>true,
'background'=>true,
'class'=>true,
'content'=>true,
'headers'=>true,
'href'=>true,
'longdesc'=>true,
'onclick'=>true,
'onchange'=>true,
'src'=>true,
'title'=>true,
'value'=>true
);
private static $_styleEncode=array(
'background-image'=>true,
'list-style-image'=>true
);
private $_attributes=array();
private $_openTags=array();
private $_writer=null;
private $_styles=array();
public function __construct($writer)
{
$this->_writer=$writer;
}
public function isValidFormAttribute($name)
{
return true;
}
public function addAttributes($attrs)
{
foreach($attrs as $name=>$value)
$this->_attributes[$name]=isset(self::$_attrEncode[$name])?THttpUtility::htmlEncode($value):$value;
}
public function addAttribute($name,$value)
{
$this->_attributes[$name]=isset(self::$_attrEncode[$name])?THttpUtility::htmlEncode($value):$value;
}
public function addStyleAttribute($name,$value)
{
$this->_styles[$name]=isset(self::$_styleEncode[$name])?THttpUtility::htmlEncode($value):$value;
}
public function flush()
{
$this->_writer->flush();
}
public function write($str)
{
$this->_writer->write($str);
}
public function writeLine($str='')
{
$this->_writer->write($str.self::CHAR_NEWLINE);
}
public function writeBreak()
{
$this->_writer->write('<br/>');
}
public function writeAttribute($name,$value,$encode=false)
{
$this->_writer->write(' '.$name.='"'.($encode?THttpUtility::htmlEncode($value):$value).'"');
}
public function renderBeginTag($tagName)
{
$tagType=isset(self::$_tagTypes[$tagName])?self::$_tagTypes[$tagName]:self::TAG_OTHER;
$str='<'.$tagName;
foreach($this->_attributes as $name=>$value)
$str.=' '.$name.'="'.$value.'"';
if(!empty($this->_styles))
{
$str.=' style="';
foreach($this->_styles as $name=>$value)
$str.=$name.':'.$value.';';
$str.='"';
}
if($tagType===self::TAG_NONCLOSING)
{
$str.=' />';
array_push($this->_openTags,'');
}
else
{
$str.='>';
array_push($this->_openTags,$tagName);
}
$this->_writer->write($str);
$this->_attributes=array();
$this->_styles=array();
}
public function renderEndTag()
{
if(!empty($this->_openTags) && ($tagName=array_pop($this->_openTags))!=='')
$this->_writer->write('</'.$tagName.'>');
}
}
?>
|
