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<?php
/**
* Prototype Engine Helper for JsHelper
*
* Provides Prototype specific Javascript for JsHelper. Requires at least
* Prototype 1.6
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2009, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2009, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package cake
* @subpackage cake.libs.view.helpers
* @since CakePHP(tm) v 1.3
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
App::import('Helper', 'Js');

class PrototypeEngineHelper extends JsBaseEngineHelper {
/**
* Is the current selection a multiple selection? or is it just a single element.
*
* @var boolean
*/
var $_multiple = false;
/**
* Option mappings for Prototype
*
* @var array
*/
var $_optionMap = array(
'request' => array(
'async' => 'asynchronous',
'data' => 'parameters',
'before' => 'onCreate',
'success' => 'onSuccess',
'complete' => 'onComplete',
'error' => 'onFailure'
),
'sortable' => array(
'start' => 'onStart',
'sort' => 'onChange',
'complete' => 'onUpdate',
'distance' => 'snap',
),
'drag' => array(
'snapGrid' => 'snap',
'container' => 'constraint',
'stop' => 'onEnd',
'start' => 'onStart',
'drag' => 'onDrag',
),
'drop' => array(
'hover' => 'onHover',
'drop' => 'onDrop',
'hoverClass' => 'hoverclass',
),
'slider' => array(
'direction' => 'axis',
'change' => 'onSlide',
'complete' => 'onChange',
'value' => 'sliderValue',
)
);

/**
* Contains a list of callback names -> default arguments.
*
* @var array
*/
var $_callbackArguments = array(
'slider' => array(
'onSlide' => 'value',
'onChange' => 'value',
),
'drag' => array(
'onStart' => 'event',
'onDrag' => 'event',
'change' => 'draggable',
'onEnd' => 'event',
),
'drop' => array(
'onHover' => 'draggable, droppable, event',
'onDrop' => 'draggable, droppable, event',
),
'request' => array(
'onCreate' => 'transport',
'onComplete' => 'transport',
'onFailure' => 'response, jsonHeader',
'onRequest' => 'transport',
'onSuccess' => 'response, jsonHeader'
),
'sortable' => array(
'onStart' => 'element',
'onChange' => 'element',
'onUpdate' => 'element',
),
);

/**
* Create javascript selector for a CSS rule
*
* @param string $selector The selector that is targeted
* @return object instance of $this. Allows chained methods.
*/
function get($selector) {
$this->_multiple = false;
if ($selector == 'window' || $selector == 'document') {
$this->selection = "$(" . $selector .")";
return $this;
}
if (preg_match('/^#[^\s.]+$/', $selector)) {
$this->selection = '$("' . substr($selector, 1) . '")';
return $this;
}
$this->_multiple = true;
$this->selection = '$$("' . $selector . '")';
return $this;
}
/**
* Add an event to the script cache. Operates on the currently selected elements.
*
* ### Options
*
* - 'wrap' - Whether you want the callback wrapped in an anonymous function. (defaults true)
* - 'stop' - Whether you want the event to stopped. (defaults true)
*
* @param string $type Type of event to bind to the current 946 id
* @param string $callback The Javascript function you wish to trigger or the function literal
* @param array $options Options for the event.
* @return string completed event handler
*/
function event($type, $callback, $options = array()) {
$defaults = array('wrap' => true, 'stop' => true);
$options = array_merge($defaults, $options);

$function = 'function (event) {%s}';
if ($options['wrap'] && $options['stop']) {
$callback = "event.stop();\n" . $callback;
}
if ($options['wrap']) {
$callback = sprintf($function, $callback);
}
$out = $this->selection . ".observe(\"{$type}\", $callback);";
return $out;
}
/**
* Create a domReady event. This is a special event in many libraries
*
* @param string $functionBody The code to run on domReady
* @return string completed domReady method
*/
function domReady($functionBody) {
$this->selection = 'document';
return $this->event('dom:loaded', $functionBody, array('stop' => false));
}
/**
* Create an iteration over the current selection result.
*
* @param string $method The method you want to apply to the selection
* @param string $callback The function body you wish to apply during the iteration.
* @return string completed iteration
*/
function each($callback) {
return $this->selection . '.each(function (item, index) {' . $callback . '});';
}
/**
* Trigger an Effect.
*
* #### Note: Effects require Scriptaculous to be loaded.
*
* @param string $name The name of the effect to trigger.
* @param array $options Array of options for the effect.
* @return string completed string with effect.
* @see JsBaseEngineHelper::effect()
*/
function effect($name, $options = array()) {
$effect = '';
$optionString = null;
if (isset($options['speed'])) {
if ($options['speed'] == 'fast') {
$options['duration'] = 0.5;
} elseif ($options['speed'] == 'slow') {
$options['duration'] = 2;
} else {
$options['duration'] = 1;
}
unset($options['speed']);
}
if (!empty($options)) {
$optionString = ', {' . $this->_parseOptions($options) . '}';
}
switch ($name) {
case 'hide':
case 'show':
$effect = $this->selection . '.' . $name . '();';
break;
case 'slideIn':
case 'slideOut':
$name = ($name == 'slideIn') ? 'slideDown' : 'slideUp';
$effect = 'Effect.' . $name . '(' . $this->selection . $optionString . ');';
break;
case 'fadeIn':
case 'fadeOut':
$name = ($name == 'fadeIn') ? 'appear' : 'fade';
$effect = $this->selection . '.' . $name .'(' . substr($optionString, 2) . ');';
break;
}
return $effect;
}
/**
* Create an Ajax or Ajax.Updater call.
*
* @param mixed $url
* @param array $options
* @return string The completed ajax call.
*/
function request($url, $options = array()) {
$url = '"'. $this->url($url) . '"';
$options = $this->_mapOptions('request', $options);
$type = '.Request';
$data = null;
if (isset($options['type']) && strtolower($options['type']) == 'json') {
unset($options['type']);
}
if (isset($options['update'])) {
$url = '"' . str_replace('#', '', $options['update']) . '", ' . $url;
$type = '.Updater';
unset($options['update'], $options['type']);
}
$safe = array_keys($this->_callbackArguments['request']);
$options = $this->_prepareCallbacks('request', $options, $safe);
if (isset($options['dataExpression'])) {
$safe[] = 'parameters';
unset($options['dataExpression']);
}
$options = $this->_parseOptions($options, $safe);
if (!empty($options)) {
$options = ', {' . $options . '}';
}
return "var jsRequest = new Ajax$type($url$options);";
}
/**
* Create a sortable element.
*
* #### Note: Requires scriptaculous to be loaded.
*
* @param array $options Array of options for the sortable.
* @return string Completed sortable script.
* @see JsHelper::sortable() for options list.
*/
function sortable($options = array()) {
$options = $this->_processOptions('sortable', $options);
if (!empty($options)) {
$options = ', {' . $options . '}';
}
return 'var jsSortable = Sortable.create(' . $this->selection . $options . ');';
}
/**
* Create a Draggable element.
*
* #### Note: Requires scriptaculous to be loaded.
*
* @param array $options Array of options for the draggable.
* @return string Completed draggable script.
* @see JsHelper::draggable() for options list.
*/
function drag($options = array()) {
$options = $this->_processOptions('drag', $options);
if (!empty($options)) {
$options = ', {' . $options . '}';
}
if ($this->_multiple) {
return $this->each('new Draggable(item' . $options . ');');
}
return 'var jsDrag = new Draggable(' . $this->selection . $options . ');';
}
/**
* Create a Droppable element.
*
* #### Note: Requires scriptaculous to be loaded.
*
* @param array $options Array of options for the droppable.
* @return string Completed droppable script.
* @see JsHelper::droppable() for options list.
*/
function drop($options = array()) {
$options = $this->_processOptions('drop', $options);
if (!empty($options)) {
$options = ', {' . $options . '}';
}
return 'Droppables.add(' . $this->selection . $options . ');';
}
/**
* Creates a slider control widget.
*
* ### Note: Requires scriptaculous to be loaded.
*
* @param array $options Array of options for the slider.
* @return string Completed slider script.
* @see JsHelper::slider() for options list.
*/
function slider($options = array()) {
$slider = $this->selection;
$this->get($options['handle']);
unset($options['handle']);

if (isset($options['min']) && isset($options['max'])) {
$options['range'] = array($options['min'], $options['max']);
unset($options['min'], $options['max']);
}
$optionString = $this->_processOptions('slider', $options);
if (!empty($optionString)) {
$optionString = ', {' . $optionString . '}';
}
$out = 'var jsSlider = new Control.Slider(' . $this->selection . ', ' . $slider . $optionString . ');';
$this->selection = $slider;
return $out;
}
/**
* Serialize the form attached to $selector.
*
* @param array $options Array of options.
* @return string Completed serializeForm() snippet
* @see JsHelper::serializeForm()
*/
function serializeForm($options = array()) {
$options = array_merge(array('isForm' => false, 'inline' => false), $options);
$selection = $this->selection;
if (!$options['isForm']) {
$selection = '$(' . $this->selection . '.form)';
}
$method = '.serialize()';
if (!$options['inline']) {
$method .= ';';
}
return $selection . $method;
}
}
?>
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