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			592 lines
		
	
	
	
		
			18 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			592 lines
		
	
	
	
		
			18 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
| <?php
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| /**
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|  * CakePHP :  Rapid Development Framework (http://cakephp.org)
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|  * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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|  *
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|  * Licensed under The MIT License
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|  * For full copyright and license information, please see the LICENSE.txt
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|  * Redistributions of files must retain the above copyright notice.
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|  *
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|  * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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|  * @link          http://cakephp.org CakePHP(tm) Project
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|  * @package       Cake.View.Helper
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|  * @since         CakePHP(tm) v 2.0
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|  * @license       http://www.opensource.org/licenses/mit-license.php MIT License
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|  */
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| 
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| App::uses('AppHelper', 'View/Helper');
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| 
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| /**
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|  * JsEngineBaseClass
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|  *
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|  * Abstract Base Class for All JsEngines to extend. Provides generic methods.
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|  *
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|  * @package       Cake.View.Helper
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|  */
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| abstract class JsBaseEngineHelper extends AppHelper {
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| 
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| /**
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|  * The js snippet for the current selection.
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|  *
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|  * @var string
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|  */
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| 	public $selection;
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| 
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| /**
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|  * Collection of option maps. Option maps allow other helpers to use generic names for engine
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|  * callbacks and options. Allowing uniform code access for all engine types. Their use is optional
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|  * for end user use though.
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|  *
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|  * @var array
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|  */
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| 	protected $_optionMap = array();
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| 
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| /**
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|  * An array of lowercase method names in the Engine that are buffered unless otherwise disabled.
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|  * This allows specific 'end point' methods to be automatically buffered by the JsHelper.
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|  *
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|  * @var array
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|  */
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| 	public $bufferedMethods = array('event', 'sortable', 'drag', 'drop', 'slider');
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| 
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| /**
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|  * Contains a list of callback names -> default arguments.
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|  *
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|  * @var array
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|  */
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| 	protected $_callbackArguments = array();
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| 
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| /**
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|  * Create an `alert()` message in JavaScript
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|  *
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|  * @param string $message Message you want to alter.
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|  * @return string completed alert()
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|  */
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| 	public function alert($message) {
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| 		return 'alert("' . $this->escape($message) . '");';
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| 	}
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| 
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| /**
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|  * Redirects to a URL. Creates a window.location modification snippet
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|  * that can be used to trigger 'redirects' from JavaScript.
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|  *
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|  * @param string|array $url URL
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|  * @return string completed redirect in javascript
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|  */
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| 	public function redirect($url = null) {
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| 		return 'window.location = "' . Router::url($url) . '";';
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| 	}
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| 
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| /**
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|  * Create a `confirm()` message
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|  *
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|  * @param string $message Message you want confirmed.
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|  * @return string completed confirm()
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|  */
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| 	public function confirm($message) {
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| 		return 'confirm("' . $this->escape($message) . '");';
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| 	}
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| 
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| /**
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|  * Generate a confirm snippet that returns false from the current
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|  * function scope.
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|  *
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|  * @param string $message Message to use in the confirm dialog.
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|  * @return string completed confirm with return script
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|  */
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| 	public function confirmReturn($message) {
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| 		$out = 'var _confirm = ' . $this->confirm($message);
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| 		$out .= "if (!_confirm) {\n\treturn false;\n}";
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| 		return $out;
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| 	}
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| 
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| /**
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|  * Create a `prompt()` JavaScript function
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|  *
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|  * @param string $message Message you want to prompt.
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|  * @param string $default Default message
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|  * @return string completed prompt()
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|  */
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| 	public function prompt($message, $default = '') {
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| 		return 'prompt("' . $this->escape($message) . '", "' . $this->escape($default) . '");';
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| 	}
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| 
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| /**
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|  * Generates a JavaScript object in JavaScript Object Notation (JSON)
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|  * from an array. Will use native JSON encode method if available, and $useNative == true
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|  *
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|  * ### Options:
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|  *
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|  * - `prefix` - String prepended to the returned data.
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|  * - `postfix` - String appended to the returned data.
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|  *
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|  * @param array $data Data to be converted.
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|  * @param array $options Set of options, see above.
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|  * @return string A JSON code block
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|  */
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| 	public function object($data = array(), $options = array()) {
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| 		$defaultOptions = array(
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| 			'prefix' => '', 'postfix' => '',
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| 		);
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| 		$options += $defaultOptions;
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| 
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| 		return $options['prefix'] . json_encode($data) . $options['postfix'];
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| 	}
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| 
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| /**
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|  * Converts a PHP-native variable of any type to a JSON-equivalent representation
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|  *
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|  * @param mixed $val A PHP variable to be converted to JSON
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|  * @param bool $quoteString If false, leaves string values unquoted
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|  * @param string $key Key name.
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|  * @return string a JavaScript-safe/JSON representation of $val
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|  */
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| 	public function value($val = array(), $quoteString = null, $key = 'value') {
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| 		if ($quoteString === null) {
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| 			$quoteString = true;
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| 		}
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| 		switch (true) {
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| 			case (is_array($val) || is_object($val)):
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| 				$val = $this->object($val);
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| 				break;
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| 			case ($val === null):
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| 				$val = 'null';
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| 				break;
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| 			case (is_bool($val)):
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| 				$val = ($val === true) ? 'true' : 'false';
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| 				break;
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| 			case (is_int($val)):
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| 				$val = $val;
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| 				break;
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| 			case (is_float($val)):
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| 				$val = sprintf("%.11f", $val);
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| 				break;
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| 			default:
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| 				$val = $this->escape($val);
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| 				if ($quoteString) {
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| 					$val = '"' . $val . '"';
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| 				}
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| 		}
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| 		return $val;
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| 	}
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| 
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| /**
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|  * Escape a string to be JSON friendly.
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|  *
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|  * List of escaped elements:
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|  *
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|  * - "\r" => '\n'
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|  * - "\n" => '\n'
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|  * - '"' => '\"'
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|  *
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|  * @param string $string String that needs to get escaped.
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|  * @return string Escaped string.
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|  */
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| 	public function escape($string) {
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| 		return $this->_utf8ToHex($string);
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| 	}
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| 
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| /**
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|  * Encode a string into JSON. Converts and escapes necessary characters.
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|  *
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|  * @param string $string The string that needs to be utf8->hex encoded
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|  * @return void
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|  */
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| 	protected function _utf8ToHex($string) {
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| 		$length = strlen($string);
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| 		$return = '';
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| 		for ($i = 0; $i < $length; ++$i) {
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| 			$ord = ord($string{$i});
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| 			switch (true) {
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| 				case $ord == 0x08:
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| 					$return .= '\b';
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| 					break;
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| 				case $ord == 0x09:
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| 					$return .= '\t';
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| 					break;
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| 				case $ord == 0x0A:
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| 					$return .= '\n';
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| 					break;
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| 				case $ord == 0x0C:
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| 					$return .= '\f';
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| 					break;
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| 				case $ord == 0x0D:
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| 					$return .= '\r';
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| 					break;
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| 				case $ord == 0x22:
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| 				case $ord == 0x2F:
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| 				case $ord == 0x5C:
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| 					$return .= '\\' . $string{$i};
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| 					break;
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| 				case (($ord >= 0x20) && ($ord <= 0x7F)):
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| 					$return .= $string{$i};
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| 					break;
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| 				case (($ord & 0xE0) == 0xC0):
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| 					if ($i + 1 >= $length) {
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| 						$i += 1;
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| 						$return .= '?';
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| 						break;
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| 					}
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| 					$charbits = $string{$i} . $string{$i + 1};
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| 					$char = Multibyte::utf8($charbits);
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| 					$return .= sprintf('\u%04s', dechex($char[0]));
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| 					$i += 1;
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| 					break;
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| 				case (($ord & 0xF0) == 0xE0):
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| 					if ($i + 2 >= $length) {
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| 						$i += 2;
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| 						$return .= '?';
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| 						break;
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| 					}
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| 					$charbits = $string{$i} . $string{$i + 1} . $string{$i + 2};
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| 					$char = Multibyte::utf8($charbits);
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| 					$return .= sprintf('\u%04s', dechex($char[0]));
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| 					$i += 2;
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| 					break;
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| 				case (($ord & 0xF8) == 0xF0):
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| 					if ($i + 3 >= $length) {
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| 						$i += 3;
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| 						$return .= '?';
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| 						break;
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| 					}
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| 					$charbits = $string{$i} . $string{$i + 1} . $string{$i + 2} . $string{$i + 3};
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| 					$char = Multibyte::utf8($charbits);
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| 					$return .= sprintf('\u%04s', dechex($char[0]));
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| 					$i += 3;
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| 					break;
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| 				case (($ord & 0xFC) == 0xF8):
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| 					if ($i + 4 >= $length) {
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| 						$i += 4;
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| 						$return .= '?';
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| 						break;
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| 					}
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| 					$charbits = $string{$i} . $string{$i + 1} . $string{$i + 2} . $string{$i + 3} . $string{$i + 4};
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| 					$char = Multibyte::utf8($charbits);
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| 					$return .= sprintf('\u%04s', dechex($char[0]));
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| 					$i += 4;
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| 					break;
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| 				case (($ord & 0xFE) == 0xFC):
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| 					if ($i + 5 >= $length) {
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| 						$i += 5;
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| 						$return .= '?';
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| 						break;
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| 					}
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| 					$charbits = $string{$i} . $string{$i + 1} . $string{$i + 2} . $string{$i + 3} . $string{$i + 4} . $string{$i + 5};
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| 					$char = Multibyte::utf8($charbits);
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| 					$return .= sprintf('\u%04s', dechex($char[0]));
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| 					$i += 5;
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| 					break;
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| 			}
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| 		}
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| 		return $return;
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| 	}
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| 
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| /**
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|  * Create javascript selector for a CSS rule
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|  *
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|  * @param string $selector The selector that is targeted
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|  * @return JsBaseEngineHelper instance of $this. Allows chained methods.
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|  */
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| 	abstract public function get($selector);
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| 
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| /**
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|  * Add an event to the script cache. Operates on the currently selected elements.
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|  *
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|  * ### Options
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|  *
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|  * - `wrap` - Whether you want the callback wrapped in an anonymous function. (defaults to true)
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|  * - `stop` - Whether you want the event to stopped. (defaults to true)
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|  *
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|  * @param string $type Type of event to bind to the current dom id
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|  * @param string $callback The JavaScript function you wish to trigger or the function literal
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|  * @param array $options Options for the event.
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|  * @return string completed event handler
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|  */
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| 	abstract public function event($type, $callback, $options = array());
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| 
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| /**
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|  * Create a domReady event. This is a special event in many libraries
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|  *
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|  * @param string $functionBody The code to run on domReady
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|  * @return string completed domReady method
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|  */
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| 	abstract public function domReady($functionBody);
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| 
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| /**
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|  * Create an iteration over the current selection result.
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|  *
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|  * @param string $callback The function body you wish to apply during the iteration.
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|  * @return string completed iteration
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|  */
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| 	abstract public function each($callback);
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| 
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| /**
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|  * Trigger an Effect.
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|  *
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|  * ### Supported Effects
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|  *
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|  * The following effects are supported by all core JsEngines
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|  *
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|  * - `show` - reveal an element.
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|  * - `hide` - hide an element.
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|  * - `fadeIn` - Fade in an element.
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|  * - `fadeOut` - Fade out an element.
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|  * - `slideIn` - Slide an element in.
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|  * - `slideOut` - Slide an element out.
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|  *
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|  * ### Options
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|  *
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|  * - `speed` - Speed at which the animation should occur. Accepted values are 'slow', 'fast'. Not all effects use
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|  *   the speed option.
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|  *
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|  * @param string $name The name of the effect to trigger.
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|  * @param array $options Array of options for the effect.
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|  * @return string completed string with effect.
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|  */
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| 	abstract public function effect($name, $options = array());
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| 
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| /**
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|  * Make an XHR request
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|  *
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|  * ### Event Options
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|  *
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|  * - `complete` - Callback to fire on complete.
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|  * - `success` - Callback to fire on success.
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|  * - `before` - Callback to fire on request initialization.
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|  * - `error` - Callback to fire on request failure.
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|  *
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|  * ### Options
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|  *
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|  * - `method` - The method to make the request with defaults to GET in more libraries
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|  * - `async` - Whether or not you want an asynchronous request.
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|  * - `data` - Additional data to send.
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|  * - `update` - Dom id to update with the content of the request.
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|  * - `type` - Data type for response. 'json' and 'html' are supported. Default is html for most libraries.
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|  * - `evalScripts` - Whether or not <script> tags should be eval'ed.
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|  * - `dataExpression` - Should the `data` key be treated as a callback. Useful for supplying `$options['data']` as
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|  *    another JavaScript expression.
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|  *
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|  * @param string|array $url Array or String URL to target with the request.
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|  * @param array $options Array of options. See above for cross library supported options
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|  * @return string XHR request.
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|  */
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| 	abstract public function request($url, $options = array());
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| 
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| /**
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|  * Create a draggable element. Works on the currently selected element.
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|  * Additional options may be supported by the library implementation.
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|  *
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|  * ### Options
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|  *
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|  * - `handle` - selector to the handle element.
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|  * - `snapGrid` - The pixel grid that movement snaps to, an array(x, y)
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|  * - `container` - The element that acts as a bounding box for the draggable element.
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|  *
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|  * ### Event Options
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|  *
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|  * - `start` - Event fired when the drag starts
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|  * - `drag` - Event fired on every step of the drag
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|  * - `stop` - Event fired when dragging stops (mouse release)
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|  *
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|  * @param array $options Options array see above.
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|  * @return string Completed drag script
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|  */
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| 	abstract public function drag($options = array());
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| 
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| /**
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|  * Create a droppable element. Allows for draggable elements to be dropped on it.
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|  * Additional options may be supported by the library implementation.
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|  *
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|  * ### Options
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|  *
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|  * - `accept` - Selector for elements this droppable will accept.
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|  * - `hoverclass` - Class to add to droppable when a draggable is over.
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|  *
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|  * ### Event Options
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|  *
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|  * - `drop` - Event fired when an element is dropped into the drop zone.
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|  * - `hover` - Event fired when a drag enters a drop zone.
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|  * - `leave` - Event fired when a drag is removed from a drop zone without being dropped.
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|  *
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|  * @param array $options Array of options for the drop. See above.
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|  * @return string Completed drop script
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|  */
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| 	abstract public function drop($options = array());
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| 
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| /**
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|  * Create a sortable element.
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|  * Additional options may be supported by the library implementation.
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|  *
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|  * ### Options
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|  *
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|  * - `containment` - Container for move action
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|  * - `handle` - Selector to handle element. Only this element will start sort action.
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|  * - `revert` - Whether or not to use an effect to move sortable into final position.
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|  * - `opacity` - Opacity of the placeholder
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|  * - `distance` - Distance a sortable must be dragged before sorting starts.
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|  *
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|  * ### Event Options
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|  *
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|  * - `start` - Event fired when sorting starts
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|  * - `sort` - Event fired during sorting
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|  * - `complete` - Event fired when sorting completes.
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|  *
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|  * @param array $options Array of options for the sortable. See above.
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|  * @return string Completed sortable script.
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|  */
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| 	abstract public function sortable($options = array());
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| 
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| /**
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|  * Create a slider UI widget. Comprised of a track and knob.
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|  * Additional options may be supported by the library implementation.
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|  *
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|  * ### Options
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|  *
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|  * - `handle` - The id of the element used in sliding.
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|  * - `direction` - The direction of the slider either 'vertical' or 'horizontal'
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|  * - `min` - The min value for the slider.
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|  * - `max` - The max value for the slider.
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|  * - `step` - The number of steps or ticks the slider will have.
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|  * - `value` - The initial offset of the slider.
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|  *
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|  * ### Events
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|  *
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|  * - `change` - Fired when the slider's value is updated
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|  * - `complete` - Fired when the user stops sliding the handle
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|  *
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|  * @param array $options Array of options for the slider. See above.
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|  * @return string Completed slider script
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|  */
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| 	abstract public function slider($options = array());
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| 
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| /**
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|  * Serialize the form attached to $selector.
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|  * Pass `true` for $isForm if the current selection is a form element.
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|  * Converts the form or the form element attached to the current selection into a string/json object
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|  * (depending on the library implementation) for use with XHR operations.
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|  *
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|  * ### Options
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|  *
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|  * - `isForm` - is the current selection a form, or an input? (defaults to false)
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|  * - `inline` - is the rendered statement going to be used inside another JS statement? (defaults to false)
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|  *
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|  * @param array $options options for serialization generation.
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|  * @return string completed form serialization script
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|  */
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| 	abstract public function serializeForm($options = array());
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| 
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| /**
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|  * Parse an options assoc array into an JavaScript object literal.
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|  * Similar to object() but treats any non-integer value as a string,
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|  * does not include `{ }`
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|  *
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|  * @param array $options Options to be converted
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|  * @param array $safeKeys Keys that should not be escaped.
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|  * @return string Parsed JSON options without enclosing { }.
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|  */
 | |
| 	protected function _parseOptions($options, $safeKeys = array()) {
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| 		$out = array();
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| 		$safeKeys = array_flip($safeKeys);
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| 		foreach ($options as $key => $value) {
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| 			if (!is_int($value) && !isset($safeKeys[$key])) {
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| 				$value = $this->value($value);
 | |
| 			}
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| 			$out[] = $key . ':' . $value;
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| 		}
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| 		sort($out);
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| 		return implode(', ', $out);
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| 	}
 | |
| 
 | |
| /**
 | |
|  * Maps Abstract options to engine specific option names.
 | |
|  * If attributes are missing from the map, they are not changed.
 | |
|  *
 | |
|  * @param string $method Name of method whose options are being worked with.
 | |
|  * @param array $options Array of options to map.
 | |
|  * @return array Array of mapped options.
 | |
|  */
 | |
| 	protected function _mapOptions($method, $options) {
 | |
| 		if (!isset($this->_optionMap[$method])) {
 | |
| 			return $options;
 | |
| 		}
 | |
| 		foreach ($this->_optionMap[$method] as $abstract => $concrete) {
 | |
| 			if (isset($options[$abstract])) {
 | |
| 				$options[$concrete] = $options[$abstract];
 | |
| 				unset($options[$abstract]);
 | |
| 			}
 | |
| 		}
 | |
| 		return $options;
 | |
| 	}
 | |
| 
 | |
| /**
 | |
|  * Prepare callbacks and wrap them with function ([args]) { } as defined in
 | |
|  * _callbackArgs array.
 | |
|  *
 | |
|  * @param string $method Name of the method you are preparing callbacks for.
 | |
|  * @param array $options Array of options being parsed
 | |
|  * @param array $callbacks Additional Keys that contain callbacks
 | |
|  * @return array Array of options with callbacks added.
 | |
|  */
 | |
| 	protected function _prepareCallbacks($method, $options, $callbacks = array()) {
 | |
| 		$wrapCallbacks = true;
 | |
| 		if (isset($options['wrapCallbacks'])) {
 | |
| 			$wrapCallbacks = $options['wrapCallbacks'];
 | |
| 		}
 | |
| 		unset($options['wrapCallbacks']);
 | |
| 		if (!$wrapCallbacks) {
 | |
| 			return $options;
 | |
| 		}
 | |
| 		$callbackOptions = array();
 | |
| 		if (isset($this->_callbackArguments[$method])) {
 | |
| 			$callbackOptions = $this->_callbackArguments[$method];
 | |
| 		}
 | |
| 		$callbacks = array_unique(array_merge(array_keys($callbackOptions), (array)$callbacks));
 | |
| 
 | |
| 		foreach ($callbacks as $callback) {
 | |
| 			if (empty($options[$callback])) {
 | |
| 				continue;
 | |
| 			}
 | |
| 			$args = null;
 | |
| 			if (!empty($callbackOptions[$callback])) {
 | |
| 				$args = $callbackOptions[$callback];
 | |
| 			}
 | |
| 			$options[$callback] = 'function (' . $args . ') {' . $options[$callback] . '}';
 | |
| 		}
 | |
| 		return $options;
 | |
| 	}
 | |
| 
 | |
| /**
 | |
|  * Convenience wrapper method for all common option processing steps.
 | |
|  * Runs _mapOptions, _prepareCallbacks, and _parseOptions in order.
 | |
|  *
 | |
|  * @param string $method Name of method processing options for.
 | |
|  * @param array $options Array of options to process.
 | |
|  * @return string Parsed options string.
 | |
|  */
 | |
| 	protected function _processOptions($method, $options) {
 | |
| 		$options = $this->_mapOptions($method, $options);
 | |
| 		$options = $this->_prepareCallbacks($method, $options);
 | |
| 		$options = $this->_parseOptions($options, array_keys($this->_callbackArguments[$method]));
 | |
| 		return $options;
 | |
| 	}
 | |
| 
 | |
| /**
 | |
|  * Convert an array of data into a query string
 | |
|  *
 | |
|  * @param array $parameters Array of parameters to convert to a query string
 | |
|  * @return string Querystring fragment
 | |
|  */
 | |
| 	protected function _toQuerystring($parameters) {
 | |
| 		$out = '';
 | |
| 		$keys = array_keys($parameters);
 | |
| 		$count = count($parameters);
 | |
| 		for ($i = 0; $i < $count; $i++) {
 | |
| 			$out .= $keys[$i] . '=' . $parameters[$keys[$i]];
 | |
| 			if ($i < $count - 1) {
 | |
| 				$out .= '&';
 | |
| 			}
 | |
| 		}
 | |
| 		return $out;
 | |
| 	}
 | |
| 
 | |
| }
 | 
