<?php
	/**************************************************************************\
	* phpGroupWare - HTML creation class                                       *
	* http://www.phpgroupware.org                                              *
	* Written by Ralf Becker <RalfBecker@outdoor-training.de>                  *
	* --------------------------------------------                             *
	*  This program is free software; you can redistribute it and/or modify it *
	*  under the terms of the GNU General Public License as published by the   *
	*  Free Software Foundation; either version 2 of the License, or (at your  *
	*  option) any later version.                                              *
	\**************************************************************************/

	/* $Id$ */

class html
{
	var $prefered_img_title;

	function html()
	{
		global $HTTP_USER_AGENT;
																// should be Ok for all HTML 4 compatible browsers
		$this->prefered_img_title = stristr($HTTP_USER_AGENT,'konqueror') ? 'title' : 'alt';
	}

	function input_hidden($vars,$value='')
	{
		if (!is_array($vars))
		{
			$vars = array( $vars => $value );
		}
		while (list($name,$value) = each($vars))
		{
			if (is_array($value)) $value = serialize($value);
			$del = strchr($value,'"') ? "'" : '"';
			if ($value && !($name == 'filter' && $value == 'none'))	// dont need to send all the empty vars
			{
				$html .= "<INPUT TYPE=HIDDEN NAME=\"$name\" VALUE=$del$value$del>\n";
			}
		}
		return $html;
	}

	function textarea($name,$value='',$options='' )
	{
		return "<TEXTAREA name=\"$name\" $options>$value</TEXTAREA>\n";
	}

	function input($name,$value='',$type='',$options='' )
	{
		if ($type) $type = "TYPE=$type";

		return "<INPUT $type NAME=\"$name\" VALUE=\"$value\" $options>\n";
	}

	function submit_button($name,$lang,$onClick='',$no_lang=0,$options='')
	{
		if (!$no_lang) $lang = lang($lang);
		if ($onClick) $options .= " onClick=\"$onClick\"";
		return $this->input($name,$lang,'SUBMIT',$options);
	}

	/*!
	@function link
	@abstract creates an absolut link + the query / get-variables
	@param $url phpgw-relative link, may include query / get-vars
	@parm $vars query or array ('name' => 'value', ...) with query
	@example link('/index.php?menuaction=infolog.uiinfolog.get_list',array('info_id' => 123))
	@example  = 'http://domain/phpgw-path/index.php?menuaction=infolog.uiinfolog.get_list&info_id=123'
	@returns absolut link already run through $phpgw->link
	*/
	function link($url,$vars='')
	{
		if (is_array( $vars ))
		{
			$v = array( );
			while(list($name,$value) = each($vars))
			{
				if ($value && !($name == 'filter' && $value == 'none'))	// dont need to send all the empty vars
				{
					$v[] = "$name=$value";
				}
			}
			$vars = implode('&',$v);
		}
		list($url,$v) = explode('?',$url);	// url may contain additional vars
		if ($v)
			$vars .= ($vars ? '&' : '') . $v;

		return $GLOBALS['phpgw']->link($url,$vars);
	}

	function checkbox($name,$value='')
	{
		return "<input type=\"checkbox\" name=\"$name\" value=\"True\"" .($value ? ' checked' : '') . ">\n";
	}

	function form($content,$hidden_vars,$url,$url_vars='',$method='POST')
	{
		$html = "<form method=\"$method\" action=\"".$this->link($url,$url_vars)."\">\n";
		$html .= $this->input_hidden($hidden_vars);

		if ($content) {
			$html .= $content;
			$html .= "</form>\n";
		}
		return $html;
	}

	function form_1button($name,$lang,$hidden_vars,$url,$url_vars='',
								 $method='POST')
	{
		return $this->form($this->submit_button($name,$lang),
								 $hidden_vars,$url,$url_vars,$method);
	}

	/*!
	@function table
	@abstracts creates table from array with rows
	@discussion abstract the html stuff
	@param $rows array with rows, each row is an array of the cols
	@param $options options for the table-tag
	@example $rows = array ( '1'  => array( 1 => 'cell1', '.1' => 'colspan=3',
	@example                                2 => 'cell2', 3 => 'cell3', '.3' => 'width="10%"' ),
	@example                 '.1' => 'BGCOLOR="#0000FF"' );
	@example table($rows,'WIDTH="100%"') = '<table WIDTH="100%"><tr><td colspan=3>cell1</td><td>cell2</td><td width="10%">cell3</td></tr></table>'
	@returns string with html-code of the table
	*/
	function table($rows,$options = '')
	{
		$html = "<TABLE $options>\n";

		while (list($key,$row) = each($rows)) {
			if (!is_array($row))
				continue;					// parameter
			$html .= "\t<TR ".$rows['.'.$key].">\n";
			while (list($key,$cell) = each($row)) {
				if ($key[0] == '.')
					continue;				// parameter
				$html .= "\t\t<TD ".$row['.'.$key].">$cell</TD>\n";
			}
			$html .= "\t</TR>\n";
		}
		$html .= "</TABLE>\n";
		
		return $html;
	}
	
	function sbox_submit( $sbox,$no_script=0 )
	{
		$html = str_replace('<select','<select onChange="this.form.submit()" ',
								  $sbox);
		if ($no_script)
		{
			$html .= '<noscript>'.$this->submit_button('send','>').'</noscript>';
		}
		return $html;
	}

	function image( $app,$name,$title='',$options='' )
	{
		if (!($path = $GLOBALS['phpgw']->common->image($app,$name)))
			$path = $name;		// name may already contain absolut path

		if ($title)
		{
			$options .= " $this->prefered_img_title=\"$title\"";
		}
		return "<IMG SRC=\"$path\" $options>";
	}

	function a_href( $content,$url,$vars='',$options='')
	{
		if (!strstr($url,'/') && count(explode('.',$url)) == 3)
			$url = "/index.php?menuaction=$url";

		return '<a href="'.$this->link($url,$vars).'" '.$options.'>'.$content.'</a>';
	}

	function bold($content)
	{
		return '<b>'.$content.'</b>';
	}

	function italic($content)
	{
		return '<i>'.$content.'</i>';
	}

	function hr($width,$options='')
	{
		if ($width)
			$options .= " WIDTH=$width";
		return "<hr $options>\n";
	}

	/*!
	@function formatOptions
	@abstract formats option-string for most of the above functions
	@param $options String (or Array) with option-values eg. '100%,,1'
	@param $names String (or Array) with the option-names eg. 'WIDTH,HEIGHT,BORDER'
	@example formatOptions('100%,,1','WIDTH,HEIGHT,BORDER') = ' WIDTH="100%" BORDER="1"'
	@returns option string
	*/
	function formatOptions($options,$names)
	{
		if (!is_array($options)) $options = explode(',',$options);
		if (!is_array($names))   $names   = explode(',',$names);

		while (list($n,$val) = each($options))
			if ($val != '' && $names[$n] != '')
				$html .= ' '.$names[$n].'="'.$val.'"';

		return $html;
	}

	/*!
	@function nextMatchStyles
	@abstract returns simple stylesheet for nextmatch row-colors
	@returns the classes 'nmh' = nextmatch header, 'nmr0'+'nmr1' = alternating rows
	*/
	function nextMatchStyles()
	{
		return $this->style(
			".nmh { background: ".$GLOBALS['phpgw_info']['theme']['th_bg']."; }\n".
			".nmr1 { background: ".$GLOBALS['phpgw_info']['theme']['row_on']."; }\n".
			".nmr0 { background: ".$GLOBALS['phpgw_info']['theme']['row_off']."; }\n"
		);
	}

	function style($styles)
	{
		return $styles ? "<STYLE type=\"text/css\">\n<!--\n$styles\n-->\n</STYLE>" : '';
	}

	function label($content,$options='')
	{
		return "<LABEL $options>$content</LABEL>";
	}
}
