mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-15 19:38:26 +00:00
f7a4858503
git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@7220 3807eeeb-6ff5-0310-8944-8be069107fe0
581 lines
No EOL
17 KiB
PHP
581 lines
No EOL
17 KiB
PHP
<?php
|
|
/* SVN FILE: $Id$ */
|
|
|
|
/**
|
|
* Javascript Helper class file.
|
|
*
|
|
* PHP versions 4 and 5
|
|
*
|
|
* CakePHP(tm) : Rapid Development Framework <http://www.cakephp.org/>
|
|
* Copyright 2005-2008, Cake Software Foundation, Inc.
|
|
* 1785 E. Sahara Avenue, Suite 490-204
|
|
* Las Vegas, Nevada 89104
|
|
*
|
|
* Licensed under The MIT License
|
|
* Redistributions of files must retain the above copyright notice.
|
|
*
|
|
* @filesource
|
|
* @copyright Copyright 2005-2008, Cake Software Foundation, Inc.
|
|
* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
|
|
* @package cake
|
|
* @subpackage cake.cake.libs.view.helpers
|
|
* @since CakePHP(tm) v 0.10.0.1076
|
|
* @version $Revision$
|
|
* @modifiedby $LastChangedBy$
|
|
* @lastmodified $Date$
|
|
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
|
|
*/
|
|
|
|
/**
|
|
* Javascript Helper class for easy use of JavaScript.
|
|
*
|
|
* JavascriptHelper encloses all methods needed while working with JavaScript.
|
|
*
|
|
* @package cake
|
|
* @subpackage cake.cake.libs.view.helpers
|
|
*/
|
|
|
|
class JavascriptHelper extends AppHelper {
|
|
/**
|
|
* Determines whether native JSON extension is used for encoding. Set by object constructor.
|
|
*
|
|
* @var boolean
|
|
* @access public
|
|
*/
|
|
var $useNative = false;
|
|
/**
|
|
* If true, automatically writes events to the end of a script or to an external JavaScript file
|
|
* at the end of page execution
|
|
*
|
|
* @var boolean
|
|
* @access public
|
|
*/
|
|
var $enabled = true;
|
|
/**
|
|
* Indicates whether <script /> blocks should be written 'safely,' i.e. wrapped in CDATA blocks
|
|
*
|
|
* @var boolean
|
|
* @access public
|
|
*/
|
|
var $safe = false;
|
|
/**
|
|
* HTML tags used by this helper.
|
|
*
|
|
* @var array
|
|
* @access public
|
|
*/
|
|
var $tags = array(
|
|
'javascriptblock' => '<script type="text/javascript">%s</script>',
|
|
'javascriptstart' => '<script type="text/javascript">',
|
|
'javascriptlink' => '<script type="text/javascript" src="%s"></script>',
|
|
'javascriptend' => '</script>'
|
|
);
|
|
/**
|
|
* Holds options passed to codeBlock(), saved for when block is dumped to output
|
|
*
|
|
* @var array
|
|
* @access protected
|
|
* @see JavascriptHelper::codeBlock()
|
|
*/
|
|
var $_blockOptions = array();
|
|
/**
|
|
* Caches events written by event() for output at the end of page execution
|
|
*
|
|
* @var array
|
|
* @access protected
|
|
* @see JavascriptHelper::event()
|
|
*/
|
|
var $_cachedEvents = array();
|
|
/**
|
|
* Indicates whether generated events should be cached for later output (can be written at the end of the page,
|
|
* in the <head />, or to an external file).
|
|
*
|
|
* @var boolean
|
|
* @access protected
|
|
* @see JavascriptHelper::event()
|
|
* @see JavascriptHelper::writeEvents()
|
|
*/
|
|
var $_cacheEvents = false;
|
|
/**
|
|
* Indicates whether cached events should be written to an external file
|
|
*
|
|
* @var boolean
|
|
* @access protected
|
|
* @see JavascriptHelper::event()
|
|
* @see JavascriptHelper::writeEvents()
|
|
*/
|
|
var $_cacheToFile = false;
|
|
/**
|
|
* Indicates whether *all* generated JavaScript should be cached for later output
|
|
*
|
|
* @var boolean
|
|
* @access protected
|
|
* @see JavascriptHelper::codeBlock()
|
|
* @see JavascriptHelper::blockEnd()
|
|
*/
|
|
var $_cacheAll = false;
|
|
/**
|
|
* Contains event rules attached with CSS selectors. Used with the event:Selectors JavaScript library.
|
|
*
|
|
* @var array
|
|
* @access protected
|
|
* @see JavascriptHelper::event()
|
|
* @link http://alternateidea.com/event-selectors/
|
|
*/
|
|
var $_rules = array();
|
|
/**
|
|
* @var string
|
|
* @access private
|
|
*/
|
|
var $__scriptBuffer = null;
|
|
/**
|
|
* Constructor. Checks for presence of native PHP JSON extension to use for object encoding
|
|
*
|
|
* @access public
|
|
*/
|
|
function __construct($options = array()) {
|
|
if (!empty($options)) {
|
|
foreach ($options as $key => $val) {
|
|
if (is_numeric($key)) {
|
|
$key = $val;
|
|
$val = true;
|
|
}
|
|
switch ($key) {
|
|
case 'cache':
|
|
|
|
break;
|
|
case 'safe':
|
|
$this->safe = $val;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
$this->useNative = function_exists('json_encode');
|
|
return parent::__construct($options);
|
|
}
|
|
/**
|
|
* Returns a JavaScript script tag.
|
|
*
|
|
* @param string $script The JavaScript to be wrapped in SCRIPT tags.
|
|
* @param array $options Set of options: allowCache, safe
|
|
* @param boolean $safe DEPRECATED. Use $options['safe'] instead
|
|
* @return string The full SCRIPT element, with the JavaScript inside it.
|
|
*/
|
|
function codeBlock($script = null, $options = array(), $safe = true) {
|
|
if (!empty($options) && !is_array($options)) {
|
|
$options = array('allowCache' => $options);
|
|
} else if (empty($options)) {
|
|
$options = array();
|
|
}
|
|
$defaultOptions = array('allowCache' => true, 'safe' => true, 'inline' => true);
|
|
$options = array_merge($defaultOptions, compact('safe'), $options);
|
|
|
|
if ($this->_cacheEvents && $this->_cacheAll && $options['allowCache'] && $script !== null) {
|
|
$this->_cachedEvents[] = $script;
|
|
} else {
|
|
$block = ($script !== null);
|
|
$safe = ($options['safe'] || $this->safe);
|
|
if ($safe && !($this->_cacheAll && $options['allowCache'])) {
|
|
$script = "\n" . '//<![CDATA[' . "\n" . $script;
|
|
if ($block) {
|
|
$script .= "\n" . '//]]>' . "\n";
|
|
}
|
|
}
|
|
|
|
if ($script === null) {
|
|
$this->__scriptBuffer = @ob_get_contents();
|
|
$this->_blockOptions = $options;
|
|
$this->inBlock = true;
|
|
@ob_end_clean();
|
|
ob_start();
|
|
return null;
|
|
} else if (!$block) {
|
|
$this->_blockOptions = $options;
|
|
}
|
|
|
|
if ($options['inline']) {
|
|
if ($block) {
|
|
return sprintf($this->tags['javascriptblock'], $script);
|
|
} else {
|
|
return sprintf($this->tags['javascriptstart']).ife($safe, "\n" . '//<![CDATA[' . "\n", '');
|
|
}
|
|
} elseif ($block) {
|
|
$view =& ClassRegistry::getObject('view');
|
|
$view->addScript(sprintf($this->tags['javascriptblock'], $script));
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* Ends a block of cached JavaScript code
|
|
*
|
|
* @return mixed
|
|
*/
|
|
function blockEnd() {
|
|
$script = @ob_get_contents();
|
|
@ob_end_clean();
|
|
ob_start();
|
|
echo $this->__scriptBuffer;
|
|
$this->__scriptBuffer = null;
|
|
$options = $this->_blockOptions;
|
|
$safe = ($options['safe'] || $this->safe);
|
|
$this->_blockOptions = array();
|
|
$this->inBlock = false;
|
|
|
|
if (isset($options['inline']) && !$options['inline']) {
|
|
$view =& ClassRegistry::getObject('view');
|
|
$view->addScript(sprintf($this->tags['javascriptblock'], $script));
|
|
}
|
|
|
|
if (!empty($script) && $this->_cacheAll && $options['allowCache']) {
|
|
$this->_cachedEvents[] = $script;
|
|
return null;
|
|
}
|
|
return ife($safe, "\n" . '//]]>' . "\n", '').$this->tags['javascriptend'];
|
|
}
|
|
/**
|
|
* Returns a JavaScript include tag (SCRIPT element). If the filename is prefixed with "/",
|
|
* the path will be relative to the base path of your application. Otherwise, the path will
|
|
* be relative to your JavaScript path, usually webroot/js.
|
|
*
|
|
* @param mixed $url String URL to JavaScript file, or an array of URLs.
|
|
* @param boolean $inline If true, the <script /> tag will be printed inline,
|
|
* otherwise it will be printed in the <head />, using $scripts_for_layout
|
|
* @see JS_URL
|
|
* @return string
|
|
*/
|
|
function link($url, $inline = true) {
|
|
if (is_array($url)) {
|
|
$out = '';
|
|
foreach ($url as $i) {
|
|
$out .= "\n\t" . $this->link($i, $inline);
|
|
}
|
|
if ($inline) {
|
|
return $out . "\n";
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (strpos($url, '://') === false) {
|
|
if ($url{0} !== '/') {
|
|
$url = JS_URL . $url;
|
|
}
|
|
if (strpos($url, '?') === false) {
|
|
if (strpos($url, '.js') === false) {
|
|
$url .= '.js';
|
|
}
|
|
if ((Configure::read('Asset.timestamp') === true && Configure::read() > 0) || Configure::read('Asset.timestamp') === 'force') {
|
|
$url .= '?' . @filemtime(WWW_ROOT . str_replace('/', DS, $url));
|
|
}
|
|
}
|
|
$url = $this->webroot($url);
|
|
|
|
if (Configure::read('Asset.filter.js')) {
|
|
$url = str_replace(JS_URL, 'cjs/', $url);
|
|
}
|
|
}
|
|
$out = $this->output(sprintf($this->tags['javascriptlink'], $url));
|
|
|
|
if ($inline) {
|
|
return $out;
|
|
} else {
|
|
$view =& ClassRegistry::getObject('view');
|
|
$view->addScript($out);
|
|
}
|
|
}
|
|
/**
|
|
* Escape carriage returns and single and double quotes for JavaScript segments.
|
|
*
|
|
* @param string $script string that might have javascript elements
|
|
* @return string escaped string
|
|
*/
|
|
function escapeScript($script) {
|
|
$script = str_replace(array("\r\n", "\n", "\r"), '\n', $script);
|
|
$script = str_replace(array('"', "'"), array('\"', "\\'"), $script);
|
|
return $script;
|
|
}
|
|
/**
|
|
* Escape a string to be JavaScript friendly.
|
|
*
|
|
* List of escaped ellements:
|
|
* + "\r\n" => '\n'
|
|
* + "\r" => '\n'
|
|
* + "\n" => '\n'
|
|
* + '"' => '\"'
|
|
* + "'" => "\\'"
|
|
*
|
|
* @param string $script String that needs to get escaped.
|
|
* @return string Escaped string.
|
|
*/
|
|
function escapeString($string) {
|
|
$escape = array("\r\n" => '\n', "\r" => '\n', "\n" => '\n', '"' => '\"', "'" => "\\'");
|
|
return str_replace(array_keys($escape), array_values($escape), $string);
|
|
}
|
|
/**
|
|
* Attach an event to an element. Used with the Prototype library.
|
|
*
|
|
* @param string $object Object to be observed
|
|
* @param string $event event to observe
|
|
* @param string $observer function to call
|
|
* @param array $options Set options: useCapture, allowCache, safe
|
|
* @return boolean true on success
|
|
*/
|
|
function event($object, $event, $observer = null, $options = array()) {
|
|
if (!empty($options) && !is_array($options)) {
|
|
$options = array('useCapture' => $options);
|
|
} else if (empty($options)) {
|
|
$options = array();
|
|
}
|
|
|
|
$defaultOptions = array('useCapture' => false);
|
|
$options = array_merge($defaultOptions, $options);
|
|
|
|
if ($options['useCapture'] == true) {
|
|
$options['useCapture'] = 'true';
|
|
} else {
|
|
$options['useCapture'] = 'false';
|
|
}
|
|
|
|
if (strpos($object, 'window') !== false || strpos($object, 'document') !== false || strpos($object, '$(') !== false || strpos($object, '"') !== false || strpos($object, '\'') !== false) {
|
|
$b = "Event.observe({$object}, '{$event}', function(event) { {$observer} }, {$options['useCapture']});";
|
|
} elseif ($object[0] == '\'') {
|
|
$b = "Event.observe(" . substr($object, 1) . ", '{$event}', function(event) { {$observer} }, {$options['useCapture']});";
|
|
} else {
|
|
$chars = array('#', ' ', ', ', '.', ':');
|
|
$found = false;
|
|
foreach ($chars as $char) {
|
|
if (strpos($object, $char) !== false) {
|
|
$found = true;
|
|
break;
|
|
}
|
|
}
|
|
if ($found) {
|
|
$this->_rules[$object] = $event;
|
|
} else {
|
|
$b = "Event.observe(\$('{$object}'), '{$event}', function(event) { {$observer} }, {$options['useCapture']});";
|
|
}
|
|
}
|
|
|
|
if (isset($b) && !empty($b)) {
|
|
if ($this->_cacheEvents === true) {
|
|
$this->_cachedEvents[] = $b;
|
|
return;
|
|
} else {
|
|
return $this->codeBlock($b, array_diff_key($options, $defaultOptions));
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* Cache JavaScript events created with event()
|
|
*
|
|
* @param boolean $file If true, code will be written to a file
|
|
* @param boolean $all If true, all code written with JavascriptHelper will be sent to a file
|
|
* @return null
|
|
*/
|
|
function cacheEvents($file = false, $all = false) {
|
|
$this->_cacheEvents = true;
|
|
$this->_cacheToFile = $file;
|
|
$this->_cacheAll = $all;
|
|
}
|
|
/**
|
|
* Gets (and clears) the current JavaScript event cache
|
|
*
|
|
* @param boolean $clear
|
|
* @return string
|
|
*/
|
|
function getCache($clear = true) {
|
|
$out = '';
|
|
$rules = array();
|
|
|
|
if (!empty($this->_rules)) {
|
|
foreach ($this->_rules as $sel => $event) {
|
|
$rules[] = "\t'{$sel}': function(element, event) {\n\t\t{$event}\n\t}";
|
|
}
|
|
}
|
|
$data = implode("\n", $this->_cachedEvents);
|
|
|
|
if (!empty($rules)) {
|
|
$data .= "\nvar Rules = {\n" . implode(",\n\n", $rules) . "\n}";
|
|
$data .= "\nEventSelectors.start(Rules);\n";
|
|
}
|
|
if ($clear) {
|
|
$this->_rules = array();
|
|
$this->_cacheEvents = false;
|
|
$this->_cachedEvents = array();
|
|
}
|
|
return $data;
|
|
}
|
|
/**
|
|
* Write cached JavaScript events
|
|
*
|
|
* @param boolean $inline If true, returns JavaScript event code. Otherwise it is added to the
|
|
* output of $scripts_for_layout in the layout.
|
|
* @param array $options Set options for codeBlock
|
|
* @return string
|
|
*/
|
|
function writeEvents($inline = true, $options = array()) {
|
|
$out = '';
|
|
$rules = array();
|
|
|
|
if ($this->_cacheEvents) {
|
|
$data = $this->getCache();
|
|
|
|
if (!empty($data)) {
|
|
if ($this->_cacheToFile) {
|
|
$filename = md5($data);
|
|
if (!file_exists(JS . $filename . '.js')) {
|
|
cache(str_replace(WWW_ROOT, '', JS) . $filename . '.js', $data, '+999 days', 'public');
|
|
}
|
|
$out = $this->link($filename);
|
|
} else {
|
|
$out = $this->codeBlock("\n" . $data . "\n", $options);
|
|
}
|
|
if ($inline) {
|
|
return $out;
|
|
} else {
|
|
$view =& ClassRegistry::getObject('view');
|
|
$view->addScript($out);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* Includes the Prototype Javascript library (and anything else) inside a single script tag.
|
|
*
|
|
* Note: The recommended approach is to copy the contents of
|
|
* javascripts into your application's
|
|
* public/javascripts/ directory, and use @see javascriptIncludeTag() to
|
|
* create remote script links.
|
|
*
|
|
* @param string $script Script file to include
|
|
* @param array $options Set options for codeBlock
|
|
* @return string script with all javascript in/javascripts folder
|
|
*/
|
|
function includeScript($script = "", $options = array()) {
|
|
if ($script == "") {
|
|
$files = scandir(JS);
|
|
$javascript = '';
|
|
|
|
foreach ($files as $file) {
|
|
if (substr($file, -3) == '.js') {
|
|
$javascript .= file_get_contents(JS . "{$file}") . "\n\n";
|
|
}
|
|
}
|
|
} else {
|
|
$javascript = file_get_contents(JS . "$script.js") . "\n\n";
|
|
}
|
|
return $this->codeBlock("\n\n" . $javascript, $options);
|
|
}
|
|
/**
|
|
* Generates a JavaScript object in JavaScript Object Notation (JSON)
|
|
* from an array
|
|
*
|
|
* @param array $data Data to be converted
|
|
* @param array $options Set of options: block, prefix, postfix, stringKeys, quoteKeys, q
|
|
* @param string $prefix DEPRECATED, use $options['prefix'] instead. Prepends the string to the returned data
|
|
* @param string $postfix DEPRECATED, use $options['postfix'] instead. Appends the string to the returned data
|
|
* @param array $stringKeys DEPRECATED, use $options['stringKeys'] instead. A list of array keys to be treated as a string
|
|
* @param boolean $quoteKeys DEPRECATED, use $options['quoteKeys'] instead. If false, treats $stringKey as a list of keys *not* to be quoted
|
|
* @param string $q DEPRECATED, use $options['q'] instead. The type of quote to use
|
|
* @return string A JSON code block
|
|
*/
|
|
function object($data = array(), $options = array(), $prefix = null, $postfix = null, $stringKeys = null, $quoteKeys = null, $q = null) {
|
|
if (!empty($options) && !is_array($options)) {
|
|
$options = array('block' => $options);
|
|
} else if (empty($options)) {
|
|
$options = array();
|
|
}
|
|
|
|
$defaultOptions = array('block' => false, 'prefix' => '', 'postfix' => '', 'stringKeys' => array(), 'quoteKeys' => true, 'q' => '"');
|
|
$options = array_merge($defaultOptions, $options, array_filter(compact(array_keys($defaultOptions))));
|
|
|
|
if (is_object($data)) {
|
|
$data = get_object_vars($data);
|
|
}
|
|
|
|
$out = $keys = array();
|
|
$numeric = true;
|
|
|
|
if ($this->useNative) {
|
|
$rt = json_encode($data);
|
|
} else {
|
|
if (is_array($data)) {
|
|
$keys = array_keys($data);
|
|
}
|
|
|
|
if (!empty($keys)) {
|
|
$numeric = (array_values($keys) === array_keys(array_values($keys)));
|
|
}
|
|
|
|
foreach ($data as $key => $val) {
|
|
if (is_array($val) || is_object($val)) {
|
|
$val = $this->object($val, am($options, array('block' => false)));
|
|
} else {
|
|
$val = $this->value($val, (!count($options['stringKeys']) || ($options['quoteKeys'] && in_array($key, $options['stringKeys'], true)) || (!$options['quoteKeys'] && !in_array($key, $options['stringKeys'], true))));
|
|
}
|
|
if (!$numeric) {
|
|
$val = $options['q'] . $this->value($key, false) . $options['q'] . ':' . $val;
|
|
}
|
|
$out[] = $val;
|
|
}
|
|
|
|
if (!$numeric) {
|
|
$rt = '{' . join(',', $out) . '}';
|
|
} else {
|
|
$rt = '[' . join(',', $out) . ']';
|
|
}
|
|
}
|
|
$rt = $options['prefix'] . $rt . $options['postfix'];
|
|
|
|
if ($options['block']) {
|
|
$rt = $this->codeBlock($rt, array_diff_key($options, $defaultOptions));
|
|
}
|
|
|
|
return $rt;
|
|
}
|
|
/**
|
|
* Converts a PHP-native variable of any type to a JSON-equivalent representation
|
|
*
|
|
* @param mixed $val A PHP variable to be converted to JSON
|
|
* @param boolean $quoteStrings If false, leaves string values unquoted
|
|
* @return string a JavaScript-safe/JSON representation of $val
|
|
*/
|
|
function value($val, $quoteStrings = true) {
|
|
switch (true) {
|
|
case (is_array($val) || is_object($val)):
|
|
$val = $this->object($val);
|
|
break;
|
|
case ($val === null):
|
|
$val = 'null';
|
|
break;
|
|
case (is_bool($val)):
|
|
$val = ife($val, 'true', 'false');
|
|
break;
|
|
case (is_int($val)):
|
|
$val = $val;
|
|
break;
|
|
case (is_float($val)):
|
|
$val = sprintf("%.11f", $val);
|
|
break;
|
|
default:
|
|
$val = $this->escapeString($val);
|
|
if ($quoteStrings) {
|
|
$val = '"' . $val . '"';
|
|
}
|
|
break;
|
|
}
|
|
return $val;
|
|
}
|
|
/**
|
|
* AfterRender callback. Writes any cached events to the view, or to a temp file.
|
|
*
|
|
* @return null
|
|
*/
|
|
function afterRender() {
|
|
if (!$this->enabled) {
|
|
return;
|
|
}
|
|
echo $this->writeEvents(true);
|
|
}
|
|
}
|
|
|
|
?>
|