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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_View
* @subpackage Helper
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @version $Id: HeadScript.php 16971 2009-07-22 18:05:45Z mikaelkael $
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/** Zend_View_Helper_Placeholder_Container_Standalone */
require_once 'Zend/View/Helper/Placeholder/Container/Standalone.php';
/**
* Helper for setting and retrieving script elements for HTML head section
*
* @uses Zend_View_Helper_Placeholder_Container_Standalone
* @package Zend_View
* @subpackage Helper
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_View_Helper_HeadScript extends Zend_View_Helper_Placeholder_Container_Standalone
{
/**#@+
* Script type contants
* @const string
*/
const FILE = 'FILE';
const SCRIPT = 'SCRIPT';
/**#@-*/
/**
* Registry key for placeholder
* @var string
*/
protected $_regKey = 'Zend_View_Helper_HeadScript';
/**
* Are arbitrary attributes allowed?
* @var bool
*/
protected $_arbitraryAttributes = false;
/**#@+
* Capture type and/or attributes (used for hinting during capture)
* @var string
*/
protected $_captureLock;
protected $_captureScriptType = null;
protected $_captureScriptAttrs = null;
protected $_captureType;
/**#@-*/
/**
* Optional allowed attributes for script tag
* @var array
*/
protected $_optionalAttributes = array(
'charset', 'defer', 'language', 'src'
);
/**
* Required attributes for script tag
* @var string
*/
protected $_requiredAttributes = array('type');
/**
* Whether or not to format scripts using CDATA; used only if doctype
* helper is not accessible
* @var bool
*/
public $useCdata = false;
/**
* Constructor
*
* Set separator to PHP_EOL.
*
* @return void
*/
public function __construct()
{
parent::__construct();
$this->setSeparator(PHP_EOL);
}
/**
* Return headScript object
*
* Returns headScript helper object; optionally, allows specifying a script
* or script file to include.
*
* @param string $mode Script or file
* @param string $spec Script/url
* @param string $placement Append, prepend, or set
* @param array $attrs Array of script attributes
* @param string $type Script type and/or array of script attributes
* @return Zend_View_Helper_HeadScript
*/
public function headScript($mode = Zend_View_Helper_HeadScript::FILE, $spec = null, $placement = 'APPEND', array $attrs = array(), $type = 'text/javascript')
{
if ((null !== $spec) && is_string($spec)) {
$action = ucfirst(strtolower($mode));
$placement = strtolower($placement);
switch ($placement) {
case 'set':
case 'prepend':
case 'append':
$action = $placement . $action;
break;
default:
$action = 'append' . $action;
break;
}
$this->$action($spec, $type, $attrs);
}
return $this;
}
/**
* Start capture action
*
* @param mixed $captureType
* @param string $typeOrAttrs
* @return void
*/
public function captureStart($captureType = Zend_View_Helper_Placeholder_Container_Abstract::APPEND, $type = 'text/javascript', $attrs = array())
{
if ($this->_captureLock) {
require_once 'Zend/View/Helper/Placeholder/Container/Exception.php';
throw new Zend_View_Helper_Placeholder_Container_Exception('Cannot nest headScript captures');
}
$this->_captureLock = true;
$this->_captureType = $captureType;
$this->_captureScriptType = $type;
$this->_captureScriptAttrs = $attrs;
ob_start();
}
/**
* End capture action and store
*
* @return void
*/
public function captureEnd()
{
$content = ob_get_clean();
$type = $this->_captureScriptType;
$attrs = $this->_captureScriptAttrs;
$this->_captureScriptType = null;
$this->_captureScriptAttrs = null;
$this->_captureLock = false;
switch ($this->_captureType) {
case Zend_View_Helper_Placeholder_Container_Abstract::SET:
case Zend_View_Helper_Placeholder_Container_Abstract::PREPEND:
case Zend_View_Helper_Placeholder_Container_Abstract::APPEND:
$action = strtolower($this->_captureType) . 'Script';
break;
default:
$action = 'appendScript';
break;
}
$this->$action($content, $type, $attrs);
}
/**
* Overload method access
*
* Allows the following method calls:
* - appendFile($src, $type = 'text/javascript', $attrs = array())
* - offsetSetFile($index, $src, $type = 'text/javascript', $attrs = array())
* - prependFile($src, $type = 'text/javascript', $attrs = array())
* - setFile($src, $type = 'text/javascript', $attrs = array())
* - appendScript($script, $type = 'text/javascript', $attrs = array())
* - offsetSetScript($index, $src, $type = 'text/javascript', $attrs = array())
* - prependScript($script, $type = 'text/javascript', $attrs = array())
* - setScript($script, $type = 'text/javascript', $attrs = array())
*
* @param string $method
* @param array $args
* @return Zend_View_Helper_HeadScript
* @throws Zend_View_Exception if too few arguments or invalid method
*/
public function __call($method, $args)
{
if (preg_match('/^(?P<action>set|(ap|pre)pend|offsetSet)(?P<mode>File|Script)$/', $method, $matches)) {
if (1 > count($args)) {
require_once 'Zend/View/Exception.php';
throw new Zend_View_Exception(sprintf('Method "%s" requires at least one argument', $method));
}
$action = $matches['action'];
$mode = strtolower($matches['mode']);
$type = 'text/javascript';
$attrs = array();
if ('offsetSet' == $action) {
$index = array_shift($args);
if (1 > count($args)) {
require_once 'Zend/View/Exception.php';
throw new Zend_View_Exception(sprintf('Method "%s" requires at least two arguments, an index and source', $method));
}
}
$content = $args[0];
if (isset($args[1])) {
$type = (string) $args[1];
}
if (isset($args[2])) {
$attrs = (array) $args[2];
}
switch ($mode) {
case 'script':
$item = $this->createData($type, $attrs, $content);
if ('offsetSet' == $action) {
$this->offsetSet($index, $item);
} else {
$this->$action($item);
}
break;
case 'file':
default:
if (!$this->_isDuplicate($content)) {
$attrs['src'] = $content;
$item = $this->createData($type, $attrs);
if ('offsetSet' == $action) {
$this->offsetSet($index, $item);
} else {
$this->$action($item);
}
}
break;
}
return $this;
}
return parent::__call($method, $args);
}
/**
* Is the file specified a duplicate?
*
* @param string $file
* @return bool
*/
protected function _isDuplicate($file)
{
foreach ($this->getContainer() as $item) {
if (($item->source === null)
&& array_key_exists('src', $item->attributes)
&& ($file == $item->attributes['src']))
{
return true;
}
}
return false;
}
/**
* Is the script provided valid?
*
* @param mixed $value
* @param string $method
* @return bool
*/
protected function _isValid($value)
{
if ((!$value instanceof stdClass)
|| !isset($value->type)
|| (!isset($value->source) && !isset($value->attributes)))
{
return false;
}
return true;
}
/**
* Override append
*
* @param string $value
* @return void
*/
public function append($value)
{
if (!$this->_isValid($value)) {
require_once 'Zend/View/Exception.php';
throw new Zend_View_Exception('Invalid argument passed to append(); please use one of the helper methods, appendScript() or appendFile()');
}
return $this->getContainer()->append($value);
}
/**
* Override prepend
*
* @param string $value
* @return void
*/
public function prepend($value)
{
if (!$this->_isValid($value)) {
require_once 'Zend/View/Exception.php';
throw new Zend_View_Exception('Invalid argument passed to prepend(); please use one of the helper methods, prependScript() or prependFile()');
}
return $this->getContainer()->prepend($value);
}
/**
* Override set
*
* @param string $value
* @return void
*/
public function set($value)
{
if (!$this->_isValid($value)) {
require_once 'Zend/View/Exception.php';
throw new Zend_View_Exception('Invalid argument passed to set(); please use one of the helper methods, setScript() or setFile()');
}
return $this->getContainer()->set($value);
}
/**
* Override offsetSet
*
* @param string|int $index
* @param mixed $value
* @return void
*/
public function offsetSet($index, $value)
{
if (!$this->_isValid($value)) {
require_once 'Zend/View/Exception.php';
throw new Zend_View_Exception('Invalid argument passed to offsetSet(); please use one of the helper methods, offsetSetScript() or offsetSetFile()');
}
$this->_isValid($value);
return $this->getContainer()->offsetSet($index, $value);
}
/**
* Set flag indicating if arbitrary attributes are allowed
*
* @param bool $flag
* @return Zend_View_Helper_HeadScript
*/
public function setAllowArbitraryAttributes($flag)
{
$this->_arbitraryAttributes = (bool) $flag;
return $this;
}
/**
* Are arbitrary attributes allowed?
*
* @return bool
*/
public function arbitraryAttributesAllowed()
{
return $this->_arbitraryAttributes;
}
/**
* Create script HTML
*
* @param string $type
* @param array $attributes
* @param string $content
* @param string|int $indent
* @return string
*/
public function itemToString($item, $indent, $escapeStart, $escapeEnd)
{
$attrString = '';
if (!empty($item->attributes)) {
foreach ($item->attributes as $key => $value) {
if (!$this->arbitraryAttributesAllowed()
&& !in_array($key, $this->_optionalAttributes))
{
continue;
}
if ('defer' == $key) {
$value = 'defer';
}
$attrString .= sprintf(' %s="%s"', $key, ($this->_autoEscape) ? $this->_escape($value) : $value);
}
}
$type = ($this->_autoEscape) ? $this->_escape($item->type) : $item->type;
$html = $indent . '<script type="' . $type . '"' . $attrString . '>';
if (!empty($item->source)) {
$html .= PHP_EOL . $indent . ' ' . $escapeStart . PHP_EOL . $item->source . $indent . ' ' . $escapeEnd . PHP_EOL . $indent;
}
$html .= '</script>';
if (isset($item->attributes['conditional'])
&& !empty($item->attributes['conditional'])
&& is_string($item->attributes['conditional']))
{
$html = '<!--[if ' . $item->attributes['conditional'] . ']> ' . $html . '<![endif]-->';
}
return $html;
}
/**
* Retrieve string representation
*
* @param string|int $indent
* @return string
*/
public function toString($indent = null)
{
$indent = (null !== $indent)
? $this->getWhitespace($indent)
: $this->getIndent();
if ($this->view) {
$useCdata = $this->view->doctype()->isXhtml() ? true : false;
} else {
$useCdata = $this->useCdata ? true : false;
}
$escapeStart = ($useCdata) ? '//<![CDATA[' : '//<!--';
$escapeEnd = ($useCdata) ? '//]]>' : '//-->';
$items = array();
$this->getContainer()->ksort();
foreach ($this as $item) {
if (!$this->_isValid($item)) {
continue;
}
$items[] = $this->itemToString($item, $indent, $escapeStart, $escapeEnd);
}
$return = implode($this->getSeparator(), $items);
return $return;
}
/**
* Create data item containing all necessary components of script
*
* @param string $type
* @param array $attributes
* @param string $content
* @return stdClass
*/
public function createData($type, array $attributes, $content = null)
{
$data = new stdClass();
$data->type = $type;
$data->attributes = $attributes;
$data->source = $content;
return $data;
}
}
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