<?php
/**
* File containing the JavaScriptHelper class and support functions
*
* (PHP 5)
*
* @package PHPonTrax
* @version $Id: javascript_helper.php 308 2009-03-19 16:40:34Z john $
* @copyright (c) 2005 John Peterson
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* @todo Document this class
* @package PHPonTrax
*/
class JavaScriptHelper extends Helpers {
/**
*
*
*/
function __construct() {
parent::__construct();
$this->javascript_callbacks = is_array($GLOBALS['JAVASCRIPT_CALLBACKS']) ? $GLOBALS['JAVASCRIPT_CALLBACKS'] : array('uninitialized', 'loading', 'loaded', 'interactive', 'complete', 'failure', 'success');
$this->ajax_options = array_merge(array('before', 'after', 'condition', 'url', 'asynchronous', 'method', 'insertion', 'position', 'form', 'with', 'update', 'script'), $this->javascript_callbacks);
$this->javascript_path = dirname(__FILE__).'/javascripts';
}
protected function options_for_javascript($options) {
$javascript = array();
if(is_array($options)) {
$javascript = array_map(create_function('$k, $v', 'return "{$k}:{$v}";'), array_keys($options), array_values($options));
sort($javascript);
}
return '{' . implode(', ', $javascript) . '}';
}
private function array_or_string_for_javascript($option) {
if(is_array($option)) {
$js_option = "['" . implode('\',\'', $option) . "']";
} elseif (!is_null($option)) {
$js_option = "'{$option}'";
}
return $js_option;
}
private function options_for_ajax($options) {
$js_options = $this->build_callbacks($options);
$js_options['asynchronous'] = ($options['type'] != 'synchronous') ? "true" : "false";
if($options['method']) {
$js_options['method'] = $this->method_option_to_s($options['method']);
}
if($options['position']) {
$js_options['insertion'] = "Insertion." . Inflector::camelize($options['position']);
}
$js_options['evalScripts'] = $options['script'] ? $options['script'] : "true";
if($options['form']) {
$js_options['parameters'] = "Form.serialize(this)";
} elseif($options['submit']) {
$js_options['parameters'] = "Form.serialize(document.getElementById('{$options['submit']}'))";
} elseif($options['with']) {
$js_options['parameters'] = $options['with'];
}
return $this->options_for_javascript($js_options);
}
private function method_option_to_s($method) {
return ((is_string($method) && !strstr($method, "'")) ? "'{$method}'" : $method);
}
private function build_observer($klass, $name, $options = array()) {
if($options['update']) {
if(!$options['with']) {
#$options['with'] = 'value';
$options['with'] = "'value=' + value";
}
}
$callback = $this->remote_function($options);
$javascript = "new {$klass}('{$name}', ";
if($options['frequency']) {
$javascript .= "{$options['frequency']}, ";
}
$javascript .= "function(element, value) {";
$javascript .= "{$callback}})";
return $this->javascript_tag($javascript);
}
private function build_callbacks($options) {
$callbacks = array();
foreach($options as $callback => $code) {
if(in_array($callback, $this->javascript_callbacks)) {
$name = 'on' . Inflector::capitalize($callback);
$callbacks[$name] = "function(request){{$code}}";
}
}
return $callbacks;
}
private function remove_ajax_options($options) {
if(is_array($options)) {
$GLOBALS['ajax_options'] = $this->ajax_options;
foreach($options as $option_key => $option_value) {
if(!in_array($option_key, $this->ajax_options)) {
$new_options[$option_key] = $option_value;
}
}
if(is_array($new_options)) {
$options = $new_options;
}
}
return $options;
}
# Returns a link that'll trigger a javascript $function using the
# onclick handler and return false after the fact.
#
# Examples:
# link_to_function("Greeting", "alert('Hello world!')")
# link_to_function(image_tag("delete"), "if confirm('Really?'){ do_delete(); }")
function link_to_function($name, $function, $html_options = array()) {
return $this->content_tag("a", $name, array_merge(array('href' => "#", 'onclick' => "{$function}; return false;"), $html_options));
}
# Returns a link to a remote action defined by <tt>$options['url']</tt>
# (using the url_for() format) that's called in the background using
# XMLHttpRequest. The result of that request can then be inserted into a
# DOM object whose id can be specified with <tt>$options['update']</tt>.
# Usually, the result would be a partial prepared by the controller with
# render_partial.
#
# Examples:
# link_to_remote("Delete this post", array("update" => "posts", array("url" => array(":action" => "destroy", ":id" => $post->id)))
# link_to_remote(image_tag("refresh"), array("update" => "emails", "url" => array(":action" => "list_emails")))
# link_to_remote(image_tag("refresh"), array("update" => "emails", "url" => "/posts/list_emails"))
#
# You can also specify a hash for <tt>$options['update']</tt> to allow for
# easy redirection of output to an other DOM element if a server-side error occurs:
#
# Example:
# link_to_remote("Delete this post", array(
# "url" => array(":action" => "destroy", ":id" => $post->id),
# "update" => array("success" => "posts", "failure" => "error")
# ))
#
# Optionally, you can use the <tt>$options['position']</tt> parameter to influence
# how the target DOM element is updated. It must be one of
# <tt>before</tt>, <tt>top</tt>, <tt>bottom</tt>, or <tt>after</tt>.
#
# By default, these remote requests are processed asynchronous during
# which various JavaScript callbacks can be triggered (for progress indicators and
# the likes). All callbacks get access to the <tt>request</tt> object,
# which holds the underlying XMLHttpRequest.
#
# To access the server response, use <tt>request.responseText</tt>, to
# find out the HTTP status, use <tt>request.status</tt>.
#
# Example:
# link_to_remote($word, array(
# "url" => array(":action" => "undo", "n" => $word_counter ),
# "complete" => "undoRequestCompleted(request)"))
#
# The callbacks that may be specified are (in order):
#
# <tt>loading</tt>:: Called when the remote document is being
# loaded with data by the browser.
# <tt>loaded</tt>:: Called when the browser has finished loading
# the remote document.
# <tt>interactive</tt>:: Called when the user can interact with the
# remote document, even though it has not
# finished loading.
# <tt>success</tt>:: Called when the XMLHttpRequest is completed,
# and the HTTP status code is in the 2XX range.
# <tt>failure</tt>:: Called when the XMLHttpRequest is completed,
# and the HTTP status code is not in the 2XX
# range.
# <tt>complete</tt>:: Called when the XMLHttpRequest is complete
# (fires after success/failure if they are present).,
#
# You can further refine <tt>success</tt> and <tt>failure</tt> by adding additional
# callbacks for specific status codes:
#
# Example:
# link_to_remote($word,
# "url" => array(":action" => "action"),
# "failure" => "alert('HTTP Error ' + request.status + '!')")
#
# A status code callback overrides the success/failure handlers if present.
#
# If you for some reason or another need synchronous processing (that'll
# block the browser while the request is happening), you can specify
# <tt>$options['type'] = "synchronous"</tt>.
#
# You can customize further browser side call logic by passing
# in JavaScript code snippets via some optional parameters. In
# their order of use these are:
#
# <tt>confirm</tt>:: Adds confirmation dialog.
# <tt>condition</tt>:: Perform remote request conditionally
# by this expression. Use this to
# describe browser-side conditions when
# request should not be initiated.
# <tt>before</tt>:: Called before request is initiated.
# <tt>after</tt>:: Called immediately after request was
# initiated and before <tt>:loading</tt>.
# <tt>submit</tt>:: Specifies the DOM element ID that's used
# as the parent of the form elements. By
# default this is the current form, but
# it could just as well be the ID of a
# table row or any other DOM element.
function link_to_remote($name, $options = array(), $html_options = array()) {
return $this->link_to_function($name, $this->remote_function($options), $html_options);
}
# Periodically calls the specified url (<tt>$options['url']</tt>) every <tt>options[:frequency]</tt> seconds (default is 10).
# Usually used to update a specified div (<tt>$options['update']</tt>) with the results of the remote call.
# The options for specifying the target with 'url' and defining callbacks is the same as link_to_remote().
function periodically_call_remote($options = array()) {
$frequency = $options['frequency'] ? $options['frequency'] : 10; # every ten seconds by default
$code = "new PeriodicalExecuter(function() {" . $this->remote_function($options) . "}, {$frequency})";
return $this->javascript_tag($code);
}
# Returns a form tag that will submit using XMLHttpRequest in the background instead of the regular
# reloading POST arrangement. Even though it's using JavaScript to serialize the form elements, the form submission
# will work just like a regular submission as viewed by the receiving side (all elements available in $_REQUEST).
# The options for specifying the target with :url and defining callbacks is the same as link_to_remote().
#
# A "fall-through" target for browsers that doesn't do JavaScript can be specified with the :action/:method options on :html
#
# form_remote_tag("html" => array("action" => url_for(":controller" => "some", ":action" => "place")))
# The Hash passed to the 'html' key is equivalent to the options (2nd) argument in the FormTagHelper::form_tag() method.
#
# By default the fall-through action is the same as the one specified in the 'url' (and the default method is 'post').
function form_remote_tag($options = array()) {
$options['form'] = true;
if (!$options['html']) {
$options['html'] = array();
}
$options['html']['onsubmit'] = $this->remote_function($options) . "; return false;";
if($options['html']['action']) {
$url_for_options = $options['html']['action'];
} else {
$url_for_options = url_for($options['url']);
}
if(!$options['html']['method']) {
$options['html']['method'] = "post";
}
return $this->tag("form", $options['html'], true);
}
# Returns a button input tag that will submit form using XMLHttpRequest in the background instead of regular
# reloading POST arrangement. <tt>$options</tt> argument is the same as in <tt>form_remote_tag()</tt>
function submit_to_remote($name, $value, $options = array()) {
if(!isset($options['with'])) {
$options['with'] = 'Form.serialize(this.form)';
}
if(!$options['html']) {
$options['html'] = array();
}
$options['html']['type'] = 'button';
$options['html']['onclick'] = $this->remote_function($options) . "; return false;";
$options['html']['name'] = $name;
$options['html']['value'] = $value;
return $this->tag("input", $options['html']);
}
# Returns a Javascript function (or expression) that'll update a DOM element according to the options passed.
#
# * <tt>content</tt>: The content to use for updating. Can be left out if using block, see example.
# * <tt>action</tt>: Valid options are :update (assumed by default), :empty, :remove
# * <tt>position</tt> If the :action is :update, you can optionally specify one of the following positions: :before, :top, :bottom, :after.
#
# Examples:
# javascript_tag(update_element_function(
# "products", :position => :bottom, :content => "<p>New product!</p>"))
#
# replacement_function = update_element_function("products") do
# <p>Product 1</p>
# <p>Product 2</p>
# end
# javascript_tag(replacement_function)
#
# This method can also be used in combination with remote method call where the result is evaluated afterwards to cause
# multiple updates on a page. Example:
#
# # Calling view
# form_remote_tag(array("url" => array(":action" => "buy"), "complete" => evaluate_remote_response()))
# all the inputs here...
#
# # Controller action
# function buy() {
# $product = new Product;
# $this->product = $product->find(1);
# }
#
# # Returning view
# update_element_function(
# "cart", array(":action" => "update", "position" => "bottom",
# "content" => "<p>New Product: #{$product->name}</p>"))
# update_element_function("status", array("binding" => $binding) do
# You've bought a new product!
# end
#
function update_element_function($element_id, $options = array(), $block = null) {
$content = $this->escape_javascript(($options['content'] ? $options['content'] : null));
if(!is_null($block)) {
$content = $this->escape_javascript($this->capture($block));
}
switch((isset($options['action']) ? $options['action'] : 'update')) {
case 'update':
if($options['position']) {
$javascript_function = "new Insertion." . Inflector::camelize($options['position']) . "('{$element_id}','{$content}')";
} else {
$javascript_function = "$('{$element_id}').innerHTML = '{$content}'";
}
break;
case 'empty':
$javascript_function = "$('{$element_id}').innerHTML = ''";
break;
case 'remove':
$javascript_function = "Element.remove('{$element_id}')";
break;
default:
$this->controller_object->raise("Invalid action, choose one of 'update', 'remove', 'empty'", "ArgumentError");
}
$javascript_function .= ";\n";
return ($options['binding'] ? $javascript_function . $options['binding'] : $javascript_function);
}
# Returns 'eval(request.responseText)' which is the Javascript function that form_remote_tag can call in :complete to
# evaluate a multiple update return document using update_element_function calls.
function evaluate_remote_response() {
return "eval(request.responseText)";
}
/*
# Returns the javascript needed for a remote function.
# Takes the same arguments as link_to_remote.
#
# Example:
# <select id="options" onchange="<?= remote_function(array("update" => "options", "url" => array(":action" => "update_options"))) ?>">
# <option value="0">Hello</option>
# <option value="1">World</option>
# </select>
*/
function remote_function($options) {
$javascript_options = $this->options_for_ajax($options);
$update = '';
if(is_array($options['update'])) {
$update = array();
if(isset($options['update']['success'])) {
$update[] = "success:'{$options['update']['success']}'";
}
if($options['update']['failure']) {
$update[] = "failure:'{$options['update']['failure']}'";
}
$update = '{' . implode(',', $update) . '}';
} elseif($options['update']) {
$update .= "'{$options['update']}'";
}
$function = empty($update) ? "new Ajax.Request(" : "new Ajax.Updater({$update}, ";
$function .= "'" . url_for($options['url']) . "'";
$function .= ", " . $javascript_options . ")";
if($options['before']) {
$function = "{$options['before']}; {$function}";
}
if($options['after']) {
$function = "{$function}; {$options['after']}";
}
if($options['condition']) {
$function = "if ({$options['condition']}) { {$function}; }";
}
if($options['confirm']) {
$function = "if (confirm('" . $this->escape_javascript($options['confirm']) . "')) { {$function}; }";
}
return $function;
}
# Includes the Action Pack JavaScript libraries inside a single <script>
# tag. The function first includes prototype.js and then its core extensions,
# (determined by filenames starting with "prototype").
# Afterwards, any additional scripts will be included in random order.
#
# Note: The recommended approach is to copy the contents of
# action_view/helpers/javascripts/ into your application's
# public/javascripts/ directory, and use javascript_include_tag() to
# create remote <script> links.
function define_javascript_functions() {
$javascript = '<script type="text/javascript">';
# load prototype.js and all .js files
$prototype_libs = glob($this->javascript_path.'/*.js');
if(count($prototype_libs)) {
rsort($prototype_libs);
foreach($prototype_libs as $filename) {
$javascript .= "\n" . file_get_contents($filename);
}
}
return $javascript . '</script>';
}
# Observes the field with the DOM ID specified by +field_id+ and makes
# an AJAX call when its contents have changed.
#
# Required $options are:
# <tt>url</tt>:: +url_for+-style options for the action to call
# when the field has changed.
#
# Additional options are:
# <tt>frequency</tt>:: The frequency (in seconds) at which changes to
# this field will be detected. Not setting this
# option at all or to a value equal to or less than
# zero will use event based observation instead of
# time based observation.
# <tt>update</tt>:: Specifies the DOM ID of the element whose
# innerHTML should be updated with the
# XMLHttpRequest response text.
# <tt>with</tt>:: A JavaScript expression specifying the
# parameters for the XMLHttpRequest. This defaults
# to 'value', which in the evaluated context
# refers to the new field value.
#
# Additionally, you may specify any of the options documented in
# link_to_remote().
function observe_field($field_id, $options = array()) {
if($options['frequency'] > 0) {
return $this->build_observer('Form.Element.Observer', $field_id, $options);
} else {
return $this->build_observer('Form.Element.EventObserver', $field_id, $options);
}
}
# Like observe_field(), but operates on an entire form identified by the
# DOM ID $form_id. $options are the same as observe_field(), except
# the default value of the <tt>with</tt> option evaluates to the
# serialized (request string) value of the form.
function observe_form($form_id, $options = array()) {
if($options['frequency']) {
return $this->build_observer('Form.Observer', $form_id, $options);
} else {
return $this->build_observer('Form.EventObserver', $form_id, $options);
}
}
# Returns a JavaScript snippet to be used on the AJAX callbacks for starting
# visual effects.
#
# This method requires the inclusion of the script.aculo.us JavaScript library.
#
# Example:
# link_to_remote("Reload", array("update" => "posts",
# "url" => array(":action" => "reload"),
# "complete" => visual_effect("highlight", "posts", array("duration" => 0.5)))
#
# If no element_id is given, it assumes "element" which should be a local
# variable in the generated JavaScript execution context. This can be used
# for example with drop_receiving_element:
#
# drop_receving_element (...), "loading" => visual_effect("fade")
#
# This would fade the element that was dropped on the drop receiving element.
#
# You can change the behaviour with various options, see
# http://script.aculo.us for more documentation.
function visual_effect($name, $element_id = false, $js_options = array()) {
$element = ($element_id ? "'{$element_id}'" : "element");
if($js_options['queue']) {
$js_options['queue'] = "'{$js_options['queue']}'";
}
return "new Effect." . Inflector::camelize($name) . "({$element}," . $this->options_for_javascript($js_options) . ");";
}
# Makes the element with the DOM ID specified by +element_id+ sortable
# by drag-and-drop and make an AJAX call whenever the sort order has
# changed. By default, the action called gets the serialized sortable
# element as parameters.
#
# This method requires the inclusion of the script.aculo.us JavaScript library.
#
# Example:
# sortable_element("my_list", array("url" => array(":action" => "order")))
#
# In the example, the action gets a "my_list" array parameter
# containing the values of the ids of elements the sortable consists
# of, in the current order.
#
# You can change the behaviour with various options, see
# http://script.aculo.us for more documentation.
function sortable_element($element_id, $options = array()) {
if(!$options['with']) {
$options['with'] = "Sortable.serialize('{$element_id}')";
}
if(!$options['onDrop']) {
$options['onDrop'] = "function(){" . $this->remote_function($options) . "}";
}
$options = $this->remove_ajax_options($options);
foreach(array('tag', 'overlap', 'constraint', 'handle') as $option) {
if($options[$option]) {
$options[$option] = "'{$options[$option]}'";
}
}
if($options['containment']) {
$options['containment'] = $this->array_or_string_for_javascript($options['containment']);
}
if($options['only']) {
$options['only'] = $this->array_or_string_for_javascript($options['only']);
}
return $this->javascript_tag("Sortable.create('{$element_id}', " . $this->options_for_javascript($options) . ")");
}
# Makes the element with the DOM ID specified by $element_id draggable.
#
# This method requires the inclusion of the script.aculo.us JavaScript library.
#
# Example:
# draggable_element("my_image", array("revert" => true))
#
# You can change the behaviour with various options, see
# http://script.aculo.us for more documentation.
function draggable_element($element_id, $options = array()) {
return $this->javascript_tag("new Draggable('{$element_id}', " . $this->options_for_javascript($options) . ")");
}
# Makes the element with the DOM ID specified by $element_id receive
# dropped draggable elements (created by draggable_element).
# and make an AJAX call By default, the action called gets the DOM ID of the
# element as parameter.
#
# This method requires the inclusion of the script.aculo.us JavaScript library.
#
# Example:
# drop_receiving_element("my_cart", array("url" => array(":controller" => "cart", ":action" => "add")))
#
# You can change the behaviour with various options, see
# http://script.aculo.us for more documentation.
function drop_receiving_element($element_id, $options = array()) {
if(!$options['with']) {
$options['with'] = "'id=' + encodeURIComponent(element.id)";
}
if(!$options['onUpdate']) {
$options['onUpdate'] = "function(element){" . $this->remote_function($options) . "}";
}
$options = $this->remove_ajax_options($options);
if($options['accept']) {
$options['accept'] = $this->array_or_string_for_javascript($options['accept']);
}
if($options['hoverclass']) {
$options['hoverclass'] = "'{$options['hoverclass']}'";
}
return $this->javascript_tag("Droppables.add('{$element_id}', " . $this->options_for_javascript($options) . ")");
}
# Escape carrier returns and single and double quotes for JavaScript segments.
function escape_javascript($javascript) {
$escape = array(
"\r\n" => '\n',
"\r" => '\n',
"\n" => '\n',
'"' => '\"',
"'" => "\\'"
);
return str_replace(array_keys($escape), array_values($escape), $javascript);
#return preg_replace('/\r\n|\n|\r/', "\\n",
# preg_replace_callback('/["\']/', create_function('$m', 'return "\\{$m}";'),
# (!is_null($javascript) ? $javascript : '')));
}
# Returns a JavaScript tag with the $content inside. Example:
# javascript_tag("alert('All is good')") => <script type="text/javascript">alert('All is good')</script>
function javascript_tag($content) {
return $this->content_tag("script", $this->javascript_cdata_section($content), array('type' => "text/javascript"));
}
function javascript_cdata_section($content) {
return "\n//" . $this->cdata_section("\n{$content}\n//") . "\n";
}
}
/**
* Avialble functions for use in views
* link_to_remote($name, $options = array(), $html_options = array())
*/
function link_to_remote() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'link_to_remote'), $args);
}
/**
* link_to_function($name, $function, $html_options = array())
*/
function link_to_function() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'link_to_function'), $args);
}
/**
* periodically_call_remote($options = array())
*/
function periodically_call_remote() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'periodically_call_remote'), $args);
}
/**
* form_remote_tag($options = array())
*/
function form_remote_tag() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'form_remote_tag'), $args);
}
/**
* submit_to_remote($name, $value, $options = array())
*/
function submit_to_remote() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'submit_to_remote'), $args);
}
/**
* update_element_function($element_id, $options = array(), $block = null)
*/
function update_element_function() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'update_element_function'), $args);
}
/**
* evaluate_remote_response()
*/
function evaluate_remote_response() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'evaluate_remote_response'), $args);
}
/**
* remote_function($options)
*/
function remote_function() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'remote_function'), $args);
}
/**
* observe_field($field_id, $options = array())
*/
function observe_field() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'observe_field'), $args);
}
/**
* observe_form($form_id, $options = array())
*/
function observe_form() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'observe_form'), $args);
}
/**
* visual_effect($name, $element_id = false, $js_options = array())
*/
function visual_effect() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'visual_effect'), $args);
}
/**
* sortable_element($element_id, $options = array())
*/
function sortable_element() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'sortable_element'), $args);
}
/**
* draggable_element($element_id, $options = array())
*/
function draggable_element() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'draggable_element'), $args);
}
/**
* drop_receiving_element($element_id, $options = array())
*/
function drop_receiving_element() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'drop_receiving_element'), $args);
}
/**
* escape_javascript($javascript)
*/
function escape_javascript() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'escape_javascript'), $args);
}
/**
* javascript_tag($content)
*/
function javascript_tag() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'javascript_tag'), $args);
}
/**
* javascript_cdata_section($content)
*/
function javascript_cdata_section() {
$javascript_helper = new JavaScriptHelper();
$args = func_get_args();
return call_user_func_array(array($javascript_helper, 'javascript_cdata_section'), $args);
}
?>