cakephp2-php8/cake/libs/view/helpers/js.php

<?php
/* SVN FILE: $Id$ */
/**
 * Javascript Generator class file.
 *
 * PHP versions 4 and 5
 *
 * CakePHP :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2006-2008, Cake Software Foundation, Inc.
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2006-2008, Cake Software Foundation, Inc.
 * @link          http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
 * @package       cake
 * @subpackage    cake.cake.libs.view.helpers
 * @since         CakePHP v 1.2
 * @version       $Revision$
 * @modifiedby    $LastChangedBy$
 * @lastmodified  $Date$
 * @license       http://www.opensource.org/licenses/mit-license.php The MIT License
 */
/**
 * Javascript Generator helper class for easy use of JavaScript.
 *
 * JsHelper provides an abstract interface for authoring JavaScript with a
 * given client-side library.
 *
 * @package       cake
 * @subpackage    cake.cake.libs.view.helpers
 */
class JsHelper extends AppHelper {
/**
 * Base URL
 *
 * @var string
 */
	var $base = null;
/**
 * Webroot path
 *
 * @var string
 */
	var $webroot = null;
/**
 * Theme name
 *
 * @var string
 */
	var $themeWeb = null;
/**
 * URL to current action.
 *
 * @var string
 */
	var $here = null;
/**
 * Parameter array.
 *
 * @var array
 */
	var $params = array();
/**
 * Current action.
 *
 * @var string
 */
	var $action = null;
/**
 * Plugin path
 *
 * @var string
 */
	var $plugin = null;
/**
 * POST data for models
 *
 * @var array
 */
	var $data = null;
/**
 * helpers
 *
 * @var array
 **/
	var $helpers = array();
/**
 * 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>'
	);
/**
 * Current Javascript Engine that is being used
 *
 * @var string
 * @access private
 **/
	var $__engineName;
/**
 * Scripts that have already been included once, prevents duplicate script insertion
 *
 * @var array
 * @access private
 **/
	var $__includedScriptNames = array();
/**
 * __objects
 *
 * @var array
 */
	var $__objects = array();

	var $effectMap = array(
		'Appear', 'Fade', 'Puff', 'BlindDown', 'BlindUp', 'SwitchOff', 'SlideDown', 'SlideUp',
		'DropOut', 'Shake', 'Pulsate', 'Squish', 'Fold', 'Grow', 'Shrink', 'Highlight', 'toggle'
	);
/**
 * output
 *
 * @var string
 */
	var $output = false;
/**
 * Constructor - determines engine helper
 *
 * @param array $settings Settings array contains name of engine helper.
 * @access public
 * @return void
 */
	function __construct($settings = array()) {
		$className = 'jquery';
		if (is_array($settings) && isset($settings[0])) {
			$className = $settings[0];
		} elseif (is_string($settings)) {
			$className = $settings;
		}
		$engineName = $className;
		if (strpos($className, '.') !== false) {
			list($plugin, $className) = explode('.', $className);
		}
		$this->__engineName = $className . 'Engine';
		$engineClass = $engineName . 'Engine';
		$this->helpers = array($engineClass);
		parent::__construct();
	}
/**
 * call__
 *
 * @param string $method Method to be called
 * @param array $params Parameters for the method being called.
 * @access public
 * @return void
 */
	function call__($method, $params) {
		if (isset($this->{$this->__engineName}) && method_exists($this->{$this->__engineName}, $method)) {
			return $this->{$this->__engineName}->dispatchMethod($method, $params);
		}
		if (method_exists($this, $method . '_')) {
			return $this->dispatchMethod($method . '_', $params);
		}
		trigger_error(sprintf(__('JsHelper:: Missing Method %s is undefined', true), $method), E_USER_WARNING);
	}
/**
 * Create an alert message in Javascript
 *
 * @param string $message Message you want to alter.
 * @access public
 * @return void
 */
	function alert_($message) {
		return 'alert("' . $this->escape($message) . '");';
	}
/**
 * Returns one or many <script> tags depending on the number of scripts given.
 *
 * 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.
 *
 * Can include one or many Javascript files. If there are .min.js or .pack.js files
 * and your debug level == 0 these files will be used instead of the non min/pack files.
 *
 * @param mixed $url String or array of javascript files to include
 * @param boolean $inline Whether script should be output inline or into scripts_for_layout.
 * @return mixed
 **/
	function uses($url, $inline = true) {
		if (is_array($url)) {
			$out = '';
			foreach ($url as $i) {
				$out .= "\n\t" . $this->uses($i, $inline);
			}
			if ($inline)  {
				return $out . "\n";
			}
			return;
		}

		if (strpos($url, '://') === false) {
			if ($url[0] !== '/') {
				$url = JS_URL . $url;
			}
			$url = $this->webroot($url);

			if (strpos($url, '?') === false) {
				if (Configure::read('debug') == 0) {
					$suffixes = array('.min.js', '.pack.js');
					foreach ($suffixes as $suffix) {
						if (file_exists(WWW_ROOT . $url . $suffix)) {
							$url .= $suffix;
							break;
						}
					}
				}
				if (strpos($url, '.js') === false) {
					$url .= '.js';
				}
			}

			$timestampEnabled = (
				(Configure::read('Asset.timestamp') === true && Configure::read() > 0) ||
				Configure::read('Asset.timestamp') === 'force'
			);

			if (strpos($url, '?') === false && $timestampEnabled) {
				$url .= '?' . @filemtime(WWW_ROOT . str_replace('/', DS, $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);
		}
	}

	function if_($if, $then, $else = null, $elseIf = array()) {
		$len = strlen($if) - 1;
		if ($if{$len} == ';') {
			$if{$len} = null;
		}

		$out = 'if (' . $if . ') { ' . $then . ' }';

		foreach ($elseIf as $cond => $exec) {
			//$out .=
		}

		if (!empty($else)) {
			$out .= ' else { ' . $else . ' }';
		}

		return $out;
	}
/**
 * Create a confirm() message
 *
 * @param string $message Message you want confirmed.
 * @access public
 * @return void
 */
	function confirm_($message) {
		return 'confirm("' . $this->escape($message) . '");';
	}
/**
 * Create a prompt() Javascript function
 *
 * @param string $message Message you want to prompt.
 * @param string $default Default message
 * @access public
 * @return void
 */
	function prompt_($message, $default = '') {
		return 'prompt("' . $this->escape($message) . '", "' . $this->escape($default) . '");';
	}
/*
 * Tries a series of expressions, and executes after first successful completion.
 * (See Prototype's Try.these).
 *
 * @return string
 */
	function tryThese_($expr1, $expr2, $expr3) {
	}
/**
 * Loads a remote URL
 *
 * @param  string $url
 * @param  array  $options
 * @return string
 */
	function load_($url = null, $options = array()) {

		if (isset($options['update'])) {
			if (!is_array($options['update'])) {
				$func = "new Ajax.Updater('{$options['update']}',";
			} else {
				$func = "new Ajax.Updater(document.createElement('div'),";
			}
			if (!isset($options['requestHeaders'])) {
				$options['requestHeaders'] = array();
			}
			if (is_array($options['update'])) {
				$options['update'] = join(' ', $options['update']);
			}
			$options['requestHeaders']['X-Update'] = $options['update'];
		} else {
			$func = "new Ajax.Request(";
		}

		$func .= "'" . Router::url($url) . "'";
		$ajax =& new AjaxHelper();
		$func .= ", " . $ajax->__optionsForAjax($options) . ")";

		if (isset($options['before'])) {
			$func = "{$options['before']}; $func";
		}
		if (isset($options['after'])) {
			$func = "$func; {$options['after']};";
		}
		if (isset($options['condition'])) {
			$func = "if ({$options['condition']}) { $func; }";
		}
		if (isset($options['confirm'])) {
			$func = "if (confirm('" . $this->Javascript->escapeString($options['confirm'])
				. "')) { $func; } else { return false; }";
		}
		return $func;
	}
/**
 * Redirects to a URL
 *
 * @param  mixed $url
 * @param  array  $options
 * @return string
 */
	function redirect_($url = null) {
		return 'window.location = "' . Router::url($url) . '";';
	}

/*	function get__($name) {
		return $this->__object($name, 'id');
	}
*/
	function select($pattern) {
		return $this->__object($pattern, 'pattern');
	}

	function real($var) {
		return $this->__object($var, 'real');
	}

	function __object($name, $var) {
		if (!isset($this->__objects[$name])) {
			$this->__objects[$name] = new JsHelperObject($this);
			$this->__objects[$name]->{$var} = $name;
		}
		return $this->__objects[$name];
	}


}

/**
 * JsEngineBaseClass 
 * 
 * Abstract Base Class for All JsEngines to extend. Provides generic methods.
 *
 * @package cake.view.helpers
 */
class JsBaseEngineHelper extends AppHelper {
/**
 * Determines whether native JSON extension is used for encoding.  Set by object constructor.
 *
 * @var boolean
 * @access public
 */
	var $useNative = false;
/**
 * Constructor.
 *
 * @return void
 **/
	function __construct() {
		$this->useNative = function_exists('json_encode');
	}
/**
 * Generates a JavaScript object in JavaScript Object Notation (JSON)
 * from an array
 *
 * Options:
 *  - prefix - String prepended to the returned data.
 *  - postfix - String appended to the returned data.
 *  - stringKeys - A list of array keys to be treated as a string
 *  - quoteKeys - If false treats $options['stringKeys'] as a list of keys **not** to be quoted.
 *  - q - Type of quote to use.
 * 
 * @param array $data Data to be converted.
 * @param array $options Set of options, see above.
 * @return string A JSON code block
 */
	function object($data = array(), $options = array()) {
		$defaultOptions = array(
			'block' => false, 'prefix' => '', 'postfix' => '',
			'stringKeys' => array(), 'quoteKeys' => true, 'q' => '"'
		);
		$options = array_merge($defaultOptions, $options);

		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, array_merge($options, array('block' => false)));
				} else {
					$quoteStrings = (
						!count($options['stringKeys']) ||
						($options['quoteKeys'] && in_array($key, $options['stringKeys'], true)) ||
						(!$options['quoteKeys'] && !in_array($key, $options['stringKeys'], true))
					);
					$val = $this->value($val, $quoteStrings);
				}
				if (!$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)):
				$val = ($val === true) ? 'true' : 'false';
			break;
			case (is_int($val)):
				$val = $val;
			break;
			case (is_float($val)):
				$val = sprintf("%.11f", $val);
			break;
			default:
				$val = $this->escape($val);
				if ($quoteStrings) {
					$val = '"' . $val . '"';
				}
			break;
		}
		return $val;
	}
/**
 * Escape a string to be JavaScript friendly.
 *
 * List of escaped ellements:
 *	+ "\r\n" => '\n'
 *	+ "\r" => '\n'
 *	+ "\n" => '\n'
 *	+ '"' => '\"'
 *	+ "'" => "\\'"
 *
 * @param  string $script String that needs to get escaped.
 * @return string Escaped string.
 */
	function escape($string) {
		$escape = array("\r\n" => '\n', "\r" => '\n', "\n" => '\n', '"' => '\"', "'" => "\\'");
		return str_replace(array_keys($escape), array_values($escape), $string);
	}

}


class JsHelperObject {
	var $__parent = null;

	var $id = null;

	var $pattern = null;

	var $real = null;

	function __construct(&$parent) {
		if (is_object($parent)) {
			$this->setParent($parent);
		}
	}

	function toString() {
		return $this->__toString();
	}

	function __toString() {
		return $this->literal;
	}

	function ref($ref = null) {
		if ($ref == null) {
			foreach (array('id', 'pattern', 'real') as $ref) {
				if ($this->{$ref} !== null) {
					return $this->{$ref};
				}
			}
		} else {
			return ($this->{$ref} !== null);
		}
		return null;
	}

	function literal($append = null) {
		if (!empty($this->id)) {
			$data = '$("' . $this->id . '")';
		}
		if (!empty($this->pattern)) {
			$data = '$$("' . $this->pattern . '")';
		}
		if (!empty($this->real)) {
			$data = $this->real;
		}
		if (!empty($append)) {
			$data .= '.' . $append;
		}
		return $data;
	}

	function __call($name, $args) {
		$data = '';

		if (isset($this->__parent->effectMap[strtolower($name)])) {
			array_unshift($args, $this->__parent->effectMap[strtolower($name)]);
			$name = 'effect';
		}

		switch ($name) {
			case 'effect':
			case 'visualEffect':

				if (strpos($args[0], '_') || $args[0]{0} != strtoupper($args[0]{0})) {
					$args[0] = Inflector::camelize($args[0]);
				}

				if (strtolower($args[0]) == 'highlight') {
					$data .= 'new ';
				}
				if ($this->pattern == null) {
					$data .= 'Effect.' . $args[0] . '(' . $this->literal();
				} else {
					$data .= 'Effect.' . $args[0] . '(item';
				}

				if (isset($args[1]) && is_array($args[1])) {
					$data .= ', {' . $this->__options($args[1]) . '}';
				}
				$data .= ');';

				if ($this->pattern !== null) {
					$data = $this->each($data);
				}
			break;
			case 'remove':
			case 'toggle':
			case 'show':
			case 'hide':
				if (empty($args)) {
					$obj = 'Element';
					$params = '';
				} else {
					$obj = 'Effect';
					$params = ', "' . $args[0] . '"';
				}

				if ($this->pattern != null) {
					$data = $this->each($obj . ".{$name}(item);");
				} else {
					$data = $obj . ".{$name}(" . $this->literal() . ');';
				}
			break;
			case 'visible':
				$data = $this->literal() . '.visible();';
			break;
			case 'update':
				$data = $this->literal() . ".update({$args[0]});";
			break;
			case 'load':
				$data = 'new Ajax.Updater("' . $this->id . '", "' . $args[0] . '"';
				if (isset($args[1]) && is_array($args[1])) {
					$data .= ', {' . $this->__options($args[1]) . '}';
				}
				$data .= ');';
			break;
			case 'each':
			case 'all':
			case 'any':
			case 'detect':
			case 'findAll':
				if ($this->pattern != null) {
					$data = $this->__iterate($name, $args[0]);
				}
			break;
			case 'addClass':
			case 'removeClass':
			case 'hasClass':
			case 'toggleClass':
				$data = $this->literal() . ".{$name}Name(\"{$args[0]}\");";
			break;
			case 'clone':
			case 'inspect':
			case 'keys':
			case 'values':
				$data = "Object.{$name}(" . $this->literal() . ");";
			break;
			case 'extend':
				$data = "Object.extend(" . $this->literal() . ", {$args[0]});";
			break;
			case '...':
				// Handle other methods here
				// including interfaces to load other files on-the-fly
				// that add support for additional methods/replacing existing methods
			break;
			default:
				$data = $this->literal() . '.' . $name . '();';
			break;
		}

		if ($this->__parent->output) {
			echo $data;
		} else {
			return $data;
		}
	}

	function __iterate($method, $data) {
		return '$$("' . $this->pattern . '").' . $method . '(function(item) {' . $data . '});';
	}

	function setParent(&$parent) {
		$this->__parent =& $parent;
	}

	function __options($opts) {
		$options = array();
		foreach ($opts as $key => $val) {
			if (!is_int($val)) {
				$val = '"' . $val . '"';
			}
			$options[] = $key . ':' . $val;
		}
		return join(', ', $options);
	}
}
?>