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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 3.0 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/3_0.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Tal Peer <tal@php.net> |
// | Pierre-Alain Joye <paj@pearfr.org> |
// +----------------------------------------------------------------------+
// $Id: Javascript.php 193835 2005-08-18 08:55:07Z alan_k $
/**
* A class for performing basic JavaScript operations
*
* Usage example:
* <code>
* echo "<html><head><title>JS Test</title></head><body>";
* $js = new HTML_Javascript();
* echo $js->startScript();
* echo $js->writeLine('foo',false);
* echo $js->writeLine('bar[0]', true);
* echo $js->writeLine('bar[3]', true);
* echo $js->endScript();
* echo "</body></html>";
* </code>
* TODO:
* - Error handler
* - Validation mechanism
* - Rollovers
* - Importation from external files
* - Themed popups
*
* @author Tal Peer <tal@php.net>
* @author Pierre-Alain Joye <paj@pearfr.org>
* @version 1.1.3
* @package HTML_Javascript
* @example examples/javascript.php Usage of HTML_Javascript
* @licence http://www.php.net/license/3_0.txt PHP Licence 3.0
* @access public
*/
//Error codes
/**
* No script started error
*/
define('HTML_JAVASCRIPT_ERROR_NOSTART', 500, true);
/**
* Unknown error
*/
define('HTML_JAVASCRIPT_ERROR_UNKNOWN', 599, true);
/**
* Last script was not ended error
*/
define('HTML_JAVASCRIPT_ERROR_NOEND', 501, true);
/**
* No file was specified for setOutputMode()
*/
define('HTML_JAVASCRIPT_ERROR_NOFILE', 505, true);
/**
* Cannot open file in write mode
*/
define('HTML_JAVASCRIPT_ERROR_WRITEFILE', 506, true);
//Output modes
/**
* Just return the results (default mode)
*/
define('HTML_JAVASCRIPT_OUTPUT_RETURN', 1);
/**
* Echo (print) the results directly to browser
*/
define('HTML_JAVASCRIPT_OUTPUT_ECHO', 2);
/**
* Print the results to a file
*/
define('HTML_JAVASCRIPT_OUTPUT_FILE', 3);
if(!defined('HTML_JAVASCRIPT_NL')){
/** Linefeed to use, default set to Unix linefeed.
* Define it before the include/require if you want to
* override it.
*/
define('HTML_JAVASCRIPT_NL', "\n");
}
/** Convertion tools */
require_once 'HTML/Javascript/Convert.php';
/**
* Main Javascript class
*
* Provides the basic function to output Javascript
* scripts, like start and end tags or set the output mode.
* @package HTML_Javascript
*/
class HTML_Javascript
{
/**
* Used to determaine if a script has been started
*
* @var boolean $_started
* @access private
*/
var $_started = false;
/**
* The output mode specified for the script
*
* @var integer $_mode
* @access private
*/
var $_mode = HTML_JAVASCRIPT_OUTPUT_RETURN;
/**
* The file to direct the output to
*
* @var string $_file
* @access private
*/
var $_file = '';
// {{{ setOutputMode
/**
* Set the output mode for the script
*
* @param integer $mode the chosen output mode, can be either
* {@link HTML_JAVASCRIPT_OUTPUT_RETURN},
* {@link HTML_JAVASCRIPT_OUTPUT_ECHO} or
* {@link HTML_JAVASCRIPT_OUTPUT_FILE}
* @param string $file the path to the file
* (if $mode is {@link HTML_JAVASCRIPT_OUTPUT_FILE})
* @see getOutputMode
* @access public
* @return mixed PEAR_Error or true
*/
function setOutputMode($mode = HTML_JAVASCRIPT_OUTPUT_RETURN, $file = NULL)
{
if($mode == HTML_JAVASCRIPT_OUTPUT_FILE ) {
if(isset($file)) {
$this->_file = $file;
} else {
$this->raiseError(HTML_JAVASCRIPT_ERROR_NOFILE);
}
}
$this->_mode = $mode;
return true;
}
// }}} setOutputMode
// {{{ setOutputMode
/**
* Get the output mode for the script
*
* @see setOutputMode
* @access public
* @return mixed PEAR_Error or true
*/
function getOutputMode()
{
return $this->_mode;
}
// }}} setOutputMode
// {{{ raiseError
/**
* A custom error handler
*
* @access private
* @param integer $code the error code
* @return mixed false if the error code is invalid,
* or a PEAR_Error otherwise
*/
function raiseError($code)
{
$ret = null;
require_once 'PEAR.php';
switch ($code) {
case HTML_JAVASCRIPT_ERROR_NOSTART:
$ret = PEAR::raiseError(
'No script started',
HTML_JAVASCRIPT_ERROR_NOSTART
);
break;
case HTML_JAVASCRIPT_ERROR_NOEND:
$ret = PEAR::raiseError(
'Last script was not ended',
HTML_JAVASCRIPT_ERROR_NOEND
);
break;
case HTML_JAVASCRIPT_ERROR_NOFILE:
$ret = PEAR::raiseError(
'A filename must be specified for setoutputMode()',
HTML_JAVASCRIPT_ERROR_NOFILE
);
break;
default:
return PEAR::raiseError(
'Unknown Error',
HTML_JAVASCRIPT_ERROR_UNKNOWN
);
break;
}
return $ret;
}
// }}} raiseError
// {{{ startScript
/**
* Starts a new script
*
* @param bool $defer whether to wait for the whole page to load
* before starting the script or no. Use defer only
* with script that does not change the document (i.e.
* alert does not change it).
*
* @access public
* @return mixed a PEAR_Error if a script has been already started
* or a string (HTML tag <script>)
*/
function startScript($defer = true)
{
$this->_started = true;
$s = $defer ? 'defer="defer"' : '';
$ret = "<script type=\"text/javascript\" ".$s.">".
HTML_JAVASCRIPT_NL;
return $ret;
}
// }}} startScript
// {{{ endScript
/**
* Used to end the script (</script>)
*
* @return mixed PEAR_Error if no script has been started
* or the end tag for the script
* @access public
*/
function endScript()
{
if ($this->_started) {
$this->_started = false;
$ret = "</script>".HTML_JAVASCRIPT_NL;
} else {
$ret = HTML_Javascript::raiseError(HTML_JAVASCRIPT_ERROR_NOSTART);
}
return $ret;
}
// }}} endScript
//{{{ _out
/**
* Checks the output mode and acts according to it
*
* @param string $str the string returned from the calling function
* @return mixed depends on the output mode,
* $str if it's HTML_JAVASCRIPT_OUTPUT_RETURN, true otherwise
* @access private
*/
function _out($str)
{
static $fp;
if( isset($this) ){
$mode = $this->_mode;
$file = $this->_file;
} else {
return $str;
}
switch($mode) {
case HTML_JAVASCRIPT_OUTPUT_RETURN:
return $str;
break;
case HTML_JAVASCRIPT_OUTPUT_ECHO:
echo $str;
return true;
break;
case HTML_JAVASCRIPT_OUTPUT_FILE:
if ($fp = @fopen($file, 'ab')){
fwrite($fp, $str);
} else {
HTML_Javascript::raiseError(HTML_JAVASCRIPT_ERROR_WRITEFILE);
}
return true;
break;
default:
HTML_Javascript::raiseError('Invalid output mode');
break;
}
}
// }}} _out
// {{{ write
/**
* A wrapper for document.writeln
*
* @access public
* @param string $str the string to output
* @param boolean $var set to true if $str is a variable name
* @return mixed PEAR_Error if no script was started or the processed string
*/
function write($str, $var = false)
{
if ($var) {
$ret = HTML_Javascript::_out(
'document.writeln('.$str.')'.HTML_JAVASCRIPT_NL
);
} else {
$ret = HTML_Javascript::_out(
'document.writeln("'.
HTML_Javascript_Convert::escapeString($str).'")'.
HTML_JAVASCRIPT_NL
);
}
return $ret;
}
// }}} write
// {{{ writeLine
/**
* A wrapper for document.writeln with an addtional <br /> tag
*
* @access public
* @param string $str the string to output
* @param boolean $var set to true if $str is a variable name
* @return mixed PEAR_Error if no script was started *
* or the processed string
*/
function writeLine($str, $var = false)
{
if ($var) {
return HTML_Javascript::_out(
'document.writeln('.$str.'+"<br />")'.HTML_JAVASCRIPT_NL
);
}
return HTML_Javascript::_out(
'document.writeln("'.
HTML_Javascript_Convert::escapeString($str).
'"+"<br />")'.HTML_JAVASCRIPT_NL
);
}
// }}} writeLine
// {{{ alert
/**
* A wrapper for alert
*
* @access public
* @param string $str the string to output
* @param boolean $var set to true if $str is a variable name
* @return mixed PEAR_Error if no script was started
* or the processed string
*/
function alert($str, $var = false)
{
$alert = 'alert(';
$alert .= $var?
$str:
'"' . HTML_Javascript_Convert::escapeString($str) . '"';
$ret = HTML_Javascript::_out($alert.')'.HTML_JAVASCRIPT_NL);
return $ret;
}
// {{{ alert
// {{{ confirm
/**
* Create a box with yes and no buttons.
* In futur releases, the 1st arg will change, $str will always be the 1st
* argument, $assign the 2nd.
*
* @param string $assign the JS variable to assign the confirmation box to
* @param string $str the string that will appear in the confirmation box
* @param bool $var whether $str is a JS var or not
* @return string the processed string
*/
function confirm($str,$assign, $var = false)
{
if($var) {
$confirm = 'confirm(' . $str . ')' . HTML_JAVASCRIPT_NL;
} else {
$confirm = 'confirm("' .
HTML_Javascript_Convert::escapeString($str) . '")' .
HTML_JAVASCRIPT_NL;
}
$ret = HTML_Javascript::_out($assign . ' = ' . $confirm);
return $ret;
}
// }}} confirm
// {{{ prompt
/**
* Open a propmt (input box)
*
* @param string $str the string that will appear in the prompt
* @param string $assign the JS var that the input will be assigned to
* @param string $default the default value
* @param string $var wether $str is a JS var or not
* @return mixed PEAR_Error or the processed string
*/
function prompt($str, $assign, $default = '', $var = false)
{
if ($var) {
$prompt = 'prompt('.$str.', "'.$default.')"'.HTML_JAVASCRIPT_NL;
} else {
$prompt = 'prompt("'.
HTML_Javascript_Convert::escapeString($str).
'", "'.$default.
'")'.HTML_JAVASCRIPT_NL;
}
$ret = HTML_Javascript::_out($assign .' = ' . $prompt);
return $ret;
}
// }}} prompt
// {{{ popup
/**
* A method for easy generation of popup windows
*
* @param string $assign the JS var to assign the window to
* @param string $file the file that will appear in the new window
* @param string $title the title of the new window
* @param int $width the width of the window
* @param int $height the height of the window
* @param mixed $attr an array containing the attributes for the new
* window, each cell can contain either the ints 1/0
* or the strings 'yes'/'no'.
* The order of attributes:
* resizable, scrollbars, menubar, toolbar,
* status, location.
* Can be also a boolean, and then all the attributes
* are set to yes or no, according to the boolean value.
* @param int $top the distance from the top, in pixels (only used if attr=false|true).
* @param int $left the distance from the left, in pixels (only used if attr=false|true).
* @return mixed PEAR_Error on error or the processed string.
*/
function popup(
$assign, $file, $title, $width, $height, $attr, $top = 300, $left = 300
)
{
if(!is_array($attr)) {
if(!is_bool($attr)) {
PEAR::raiseError('$attr should be either an array or a boolean');
} else {
if($attr) {
$attr = array('yes', 'yes', 'yes', 'yes', 'yes', 'yes', $top, $left);
} else {
$attr = array('no', 'no', 'no', 'no', 'no', 'no', $top, $left);
}
}
}
$ret = HTML_Javascript::_out(
$assign .
"= window.open(".
"\"$file\", \"$title\",".
" \"width=$width, height=$height,".
"resizable=$attr[0], scrollbars=$attr[1],".
" menubar=$attr[2], toolbar=$attr[3], status=$attr[4],".
" location=$attr[5], top=$attr[6], left=$attr[7]\")".
HTML_JAVASCRIPT_NL);
return $ret;
}
// }}} popup
// {{{ popupWrite
/**
* Creates a new popup window containing a string. Inside the popup windows
* you can access the opener window with the opener var.
*
* @param string $assign the JS variable to assign the window to
* @param string $str the string that will appear in the new window
* (HTML tags would be parsed by the browser, of course)
* @param string $title the title of the window
* @param int $width the width of the window
* @param int $height the height of the window
* @param mixed $attr see popup()
* @param int $top distance from the top (in pixels
* @param int $left distance from the left (in pixels)
* @see popup()
* @return the processed string
*/
function popupWrite(
$assign, $str, $title, $width, $height, $attr, $top = 300, $left = 300
)
{
static $cnt_popup;
$str = HTML_Javascript_Convert::escapeString($str);
$assign = strlen($assign)==0?'pearpopup'.$cnt_popup++:$assign;
if($attr) {
$attr = array('yes', 'yes', 'yes', 'yes', 'yes', 'yes', $top, $left);
} else {
$attr = array('no', 'no', 'no', 'no', 'no', 'no', $top, $height);
}
$windows = $assign . "= window.open(\"\",".
" \"$title\",".
" \"width=$width, height=$height,".
" resizable=$attr[0], scrollbars=$attr[1],".
" menubar=$attr[2], toolbar=$attr[3],".
" status=$attr[4], location=$attr[5],".
" top=$attr[6], left=$attr[7]\")".HTML_JAVASCRIPT_NL;
$windows .= "
if ($assign){
$assign.focus();
$assign.document.open();
$assign.document.write('$str');
$assign.document.close();
if ($assign.opener == null) $assign.opener = self;
}
";
$ret = HTML_Javascript::_out($windows);
return $ret;
}
// }}} popupWrite
}
?>
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