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<?php
/* SVN FILE: $Id$ */
/**
* Helper for AJAX operations.
*
* Helps doing AJAX using the Prototype library.
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework (http://www.cakephp.org)
* Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @copyright Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.libs.view.helpers
* @since CakePHP(tm) v 0.10.0.1076
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
/**
* AjaxHelper helper library.
*
* Helps doing AJAX using the Prototype library.
*
* @package cake
* @subpackage cake.cake.libs.view.helpers
*/
class AjaxHelper extends AppHelper {
/**
* Included helpers.
*
* @var array
*/
var $helpers = array('Html', 'Javascript', 'Form');
/**
* HtmlHelper instance
*
* @var HtmlHelper
* @access public
*/
var $Html = null;
/**
* JavaScriptHelper instance
*
* @var JavaScriptHelper
* @access public
*/
var $Javascript = null;
/**
* Names of Javascript callback functions.
*
* @var array
*/
var $callbacks = array(
'complete', 'create', 'exception', 'failure', 'interactive', 'loading',
'loaded', 'success', 'uninitialized'
);
/**
* Names of AJAX options.
*
* @var array
*/
var $ajaxOptions = array(
'after', 'asynchronous', 'before', 'confirm', 'condition', 'contentType', 'encoding',
'evalScripts', 'failure', 'fallback', 'form', 'indicator', 'insertion', 'interactive',
'loaded', 'loading', 'method', 'onCreate', 'onComplete', 'onException', 'onFailure',
'onInteractive', 'onLoaded', 'onLoading', 'onSuccess', 'onUninitialized', 'parameters',
'position', 'postBody', 'requestHeaders', 'success', 'type', 'update', 'with'
);
/**
* Options for draggable.
*
* @var array
*/
var $dragOptions = array(
'handle', 'revert', 'snap', 'zindex', 'constraint', 'change', 'ghosting',
'starteffect', 'reverteffect', 'endeffect', 'scroll', 'scrollSensitivity',
'onStart', 'onDrag', 'onEnd'
);
/**
* Options for droppable.
*
* @var array
*/
var $dropOptions = array(
'accept', 'containment', 'greedy', 'hoverclass', 'onHover', 'onDrop', 'overlap'
);
/**
* Options for sortable.
*
* @var array
*/
var $sortOptions = array(
'constraint', 'containment', 'dropOnEmpty', 'ghosting', 'handle', 'hoverclass', 'onUpdate',
'onChange', 'only', 'overlap', 'scroll', 'scrollSensitivity', 'scrollSpeed', 'tag', 'tree',
'treeTag', 'update'
);
/**
* Options for slider.
*
* @var array
*/
var $sliderOptions = array(
'alignX', 'alignY', 'axis', 'disabled', 'handleDisabled', 'handleImage', 'increment',
'maximum', 'minimum', 'onChange', 'onSlide', 'range', 'sliderValue', 'values'
);
/**
* Options for in-place editor.
*
* @var array
*/
var $editorOptions = array(
'okText', 'cancelText', 'savingText', 'formId', 'externalControl', 'rows', 'cols', 'size',
'highlightcolor', 'highlightendcolor', 'savingClassName', 'formClassName', 'loadTextURL',
'loadingText', 'callback', 'ajaxOptions', 'clickToEditText', 'collection', 'okControl',
'cancelControl', 'submitOnBlur'
);
/**
* Options for auto-complete editor.
*
* @var array
*/
var $autoCompleteOptions = array(
'afterUpdateElement', 'callback', 'frequency', 'indicator', 'minChars', 'onShow', 'onHide',
'parameters', 'paramName', 'tokens', 'updateElement'
);
/**
* Output buffer for Ajax update content
*
* @var array
*/
var $__ajaxBuffer = array();
/**
* Returns link to remote action
*
* Returns a link to a remote action defined by <i>options[url]</i>
* (using the url() format) that's called in the background using
* XMLHttpRequest. The result of that request can then be inserted into a
* DOM object whose id can be specified with <i>options[update]</i>.
*
* Examples:
* <code>
* link("Delete this post",
* array("update" => "posts", "url" => "delete/{$postid->id}"));
* link(imageTag("refresh"),
* array("update" => "emails", "url" => "list_emails" ));
* </code>
*
* By default, these remote requests are processed asynchronous during
* which various callbacks can be triggered (for progress indicators and
* the likes).
*
* Example:
* <code>
* link (word,
* array("url" => "undo", "n" => word_counter),
* array("complete" => "undoRequestCompleted(request)"));
* </code>
*
* The callbacks that may be specified are:
*
* - <i>loading</i>:: Called when the remote document is being
* loaded with data by the browser.
* - <i>loaded</i>:: Called when the browser has finished loading
* the remote document.
* - <i>interactive</i>:: Called when the user can interact with the
* remote document, even though it has not
* finished loading.
* - <i>complete</i>:: Called when the XMLHttpRequest is complete.
*
* If you for some reason or another need synchronous processing (that'll
* block the browser while the request is happening), you can specify
* <i>options[type] = synchronous</i>.
*
* 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:
*
* - <i>confirm</i>:: Adds confirmation dialog.
* -<i>condition</i>:: Perform remote request conditionally
* by this expression. Use this to
* describe browser-side conditions when
* request should not be initiated.
* - <i>before</i>:: Called before request is initiated.
* - <i>after</i>:: Called immediately after request was
* initiated and before <i>loading</i>.
*
* @param string $title Title of link
* @param string $href Href string "/products/view/12"
* @param array $options Options for JavaScript function
* @param string $confirm Confirmation message. Calls up a JavaScript confirm() message.
* @param boolean $escapeTitle Escaping the title string to HTML entities
*
* @return string HTML code for link to remote action
*/
function link($title, $href = null, $options = array(), $confirm = null, $escapeTitle = true) {
if (!isset($href)) {
$href = $title;
}
if (!isset($options['url'])) {
$options['url'] = $href;
}
if (isset($confirm)) {
$options['confirm'] = $confirm;
unset($confirm);
}
$htmlOptions = $this->__getHtmlOptions($options, array('url'));
if (empty($options['fallback']) || !isset($options['fallback'])) {
$options['fallback'] = $href;
}
$htmlDefaults = array('id' => 'link' . intval(mt_rand()), 'onclick' => '');
$htmlOptions = array_merge($htmlDefaults, $htmlOptions);
$htmlOptions['onclick'] .= ' event.returnValue = false; return false;';
$return = $this->Html->link($title, $href, $htmlOptions, null, $escapeTitle);
$callback = $this->remoteFunction($options);
$script = $this->Javascript->event("'{$htmlOptions['id']}'", "click", $callback);
if (is_string($script)) {
$return .= $script;
}
return $return;
}
/**
* Creates JavaScript function for remote AJAX call
*
* This function creates the javascript needed to make a remote call
* it is primarily used as a helper for AjaxHelper::link.
*
* @param array $options options for javascript
* @return string html code for link to remote action
* @see AjaxHelper::link() for docs on options parameter.
*/
function remoteFunction($options) {
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 .= "'" . $this->url(isset($options['url']) ? $options['url'] : "") . "'";
$func .= ", " . $this->__optionsForAjax($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 { event.returnValue = false; return false; }";
}
return $func;
}
/**
* Periodically call remote url via AJAX.
*
* Periodically calls the specified url (<i>options[url]</i>) every <i>options[frequency]</i>
* seconds (default is 10). Usually used to update a specified div (<i>options[update]</i>) with
* the results of the remote call. The options for specifying the target with url and defining
* callbacks is the same as AjaxHelper::link().
*
* @param array $options Callback options
* @return string Javascript code
* @see AjaxHelper::link()
*/
function remoteTimer($options = null) {
$frequency = (isset($options['frequency'])) ? $options['frequency'] : 10;
$callback = $this->remoteFunction($options);
$code = "new PeriodicalExecuter(function() {{$callback}}, $frequency)";
return $this->Javascript->codeBlock($code);
}
/**
* Returns form tag that will submit using Ajax.
*
* 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 params). The options for defining callbacks is the same
* as AjaxHelper::link().
*
* @param mixed $params Either a string identifying the form target, or an array of method parameters, including:
* - 'params' => Acts as the form target
* - 'type' => 'post' or 'get'
* - 'options' => An array containing all HTML and script options used to
* generate the form tag and Ajax request.
* @param array $type How form data is posted: 'get' or 'post'
* @param array $options Callback/HTML options
* @return string JavaScript/HTML code
* @see AjaxHelper::link()
*/
function form($params = null, $type = 'post', $options = array()) {
$model = false;
if (is_array($params)) {
extract($params, EXTR_OVERWRITE);
}
if (empty($options['url'])) {
$options['url'] = array('action' => $params);
}
$htmlDefaults = array(
'id' => 'form' . intval(mt_rand()),
'onsubmit' => "event.returnValue = false; return false;",
'type' => $type
);
$htmlOptions = $this->__getHtmlOptions($options, array('model', 'with'));
$htmlOptions = array_merge($htmlDefaults, $htmlOptions);
$defaults = array('model' => $model, 'with' => "Form.serialize('{$htmlOptions['id']}')");
$options = array_merge($defaults, $options);
$callback = $this->remoteFunction($options);
$form = $this->Form->create($options['model'], $htmlOptions);
$script = $this->Javascript->event("'" . $htmlOptions['id']. "'", 'submit', $callback);
return $form . $script;
}
/**
* Returns a button input tag that will submit using Ajax
*
* Returns a button input tag that will submit form using XMLHttpRequest in the background instead
* of regular reloading POST arrangement. <i>options</i> argument is the same as
* in AjaxHelper::form().
*
* @param string $title Input button title
* @param array $options Callback options
* @return string Ajaxed input button
* @see AjaxHelper::form()
*/
function submit($title = 'Submit', $options = array()) {
$htmlOptions = $this->__getHtmlOptions($options);
$htmlOptions['value'] = $title;
if (!isset($options['with'])) {
$options['with'] = 'Form.serialize(Event.element(event).form)';
}
if (!isset($htmlOptions['id'])) {
$htmlOptions['id'] = 'submit' . intval(mt_rand());
}
$htmlOptions['onclick'] = "event.returnValue = false; return false;";
$callback = $this->remoteFunction($options);
$form = $this->Form->submit($title, $htmlOptions);
$script = $this->Javascript->event('"' . $htmlOptions['id'] . '"', 'click', $callback);
return $form . $script;
}
/**
* Observe field and call ajax on change.
*
* Observes the field with the DOM ID specified by <i>field</i> and makes
* an Ajax when its contents have changed.
*
* Required +options+ are:
* - <i>frequency</i>:: The frequency (in seconds) at which changes to
* this field will be detected.
* - <i>url</i>:: @see url() -style options for the action to call
* when the field has changed.
*
* Additional options are:
* - <i>update</i>:: Specifies the DOM ID of the element whose
* innerHTML should be updated with the
* XMLHttpRequest response text.
* - <i>with</i>:: A Javascript expression specifying the
* parameters for the XMLHttpRequest. This defaults
* to Form.Element.serialize('$field'), which can be
* accessed from params['form']['field_id'].
*
* Additionally, you may specify any of the options documented in
* @see linkToRemote().
*
* @param string $field DOM ID of field to observe
* @param array $options ajax options
* @return string ajax script
*/
function observeField($field, $options = array()) {
if (!isset($options['with'])) {
$options['with'] = 'Form.Element.serialize(\'' . $field . '\')';
}
$observer = 'Observer';
if (!isset($options['frequency']) || intval($options['frequency']) == 0) {
$observer = 'EventObserver';
}
return $this->Javascript->codeBlock(
$this->_buildObserver('Form.Element.' . $observer, $field, $options)
);
}
/**
* Observe entire form and call ajax on change.
*
* Like @see observeField(), but operates on an entire form identified by the
* DOM ID <b>form</b>. <b>options</b> are the same as <b>observeField</b>, except
* the default value of the <i>with</i> option evaluates to the
* serialized (request string) value of the form.
*
* @param string $form DOM ID of form to observe
* @param array $options ajax options
* @return string ajax script
*/
function observeForm($form, $options = array()) {
if (!isset($options['with'])) {
$options['with'] = 'Form.serialize(\'' . $form . '\')';
}
$observer = 'Observer';
if (!isset($options['frequency']) || intval($options['frequency']) == 0) {
$observer = 'EventObserver';
}
return $this->Javascript->codeBlock(
$this->_buildObserver('Form.' . $observer, $form, $options)
);
}
/**
* Create a text field with Autocomplete.
*
* Creates an autocomplete field with the given ID and options.
*
* options['with'] defaults to "Form.Element.serialize('$field')",
* but can be any valid javascript expression defining the additional fields.
*
* @param string $field DOM ID of field to observe
* @param string $url URL for the autocomplete action
* @param array $options Ajax options
* @return string Ajax script
*/
function autoComplete($field, $url = "", $options = array()) {
$var = '';
if (isset($options['var'])) {
$var = 'var ' . $options['var'] . ' = ';
unset($options['var']);
}
if (!isset($options['id'])) {
$options['id'] = Inflector::camelize(str_replace(".", "_", $field));
}
$divOptions = array(
'id' => $options['id'] . "_autoComplete",
'class' => isset($options['class']) ? $options['class'] : 'auto_complete'
);
if (isset($options['div_id'])) {
$divOptions['id'] = $options['div_id'];
unset($options['div_id']);
}
$htmlOptions = $this->__getHtmlOptions($options);
$htmlOptions['autocomplete'] = "off";
foreach ($this->autoCompleteOptions as $opt) {
unset($htmlOptions[$opt]);
}
if (isset($options['tokens'])) {
if (is_array($options['tokens'])) {
$options['tokens'] = $this->Javascript->object($options['tokens']);
} else {
$options['tokens'] = '"' . $options['tokens'] . '"';
}
}
$options = $this->_optionsToString($options, array('paramName', 'indicator'));
$options = $this->_buildOptions($options, $this->autoCompleteOptions);
$text = $this->Form->text($field, $htmlOptions);
$div = $this->Html->div(null, '', $divOptions);
$script = "{$var}new Ajax.Autocompleter('{$htmlOptions['id']}', '{$divOptions['id']}', '";
$script .= $this->Html->url($url) . "', {$options});";
return "{$text}\n{$div}\n" . $this->Javascript->codeBlock($script);
}
/**
* Creates an Ajax-updateable DIV element
*
* @param string $id options for javascript
* @return string HTML code
*/
function div($id, $options = array()) {
if (env('HTTP_X_UPDATE') != null) {
$this->Javascript->enabled = false;
$divs = explode(' ', env('HTTP_X_UPDATE'));
if (in_array($id, $divs)) {
@ob_end_clean();
ob_start();
return '';
}
}
$attr = $this->_parseAttributes(array_merge($options, array('id' => $id)));
return $this->output(sprintf($this->Html->tags['blockstart'], $attr));
}
/**
* Closes an Ajax-updateable DIV element
*
* @param string $id The DOM ID of the element
* @return string HTML code
*/
function divEnd($id) {
if (env('HTTP_X_UPDATE') != null) {
$divs = explode(' ', env('HTTP_X_UPDATE'));
if (in_array($id, $divs)) {
$this->__ajaxBuffer[$id] = ob_get_contents();
ob_end_clean();
ob_start();
return '';
}
}
return $this->output($this->Html->tags['blockend']);
}
/**
* Detects Ajax requests
*
* @return boolean True if the current request is a Prototype Ajax update call
*/
function isAjax() {
return (isset($this->params['isAjax']) && $this->params['isAjax'] === true);
}
/**
* Creates a draggable element. For a reference on the options for this function,
* check out http://github.com/madrobby/scriptaculous/wikis/draggable
*
* @param unknown_type $id
* @param array $options
* @return unknown
*/
function drag($id, $options = array()) {
$var = '';
if (isset($options['var'])) {
$var = 'var ' . $options['var'] . ' = ';
unset($options['var']);
}
$options = $this->_buildOptions(
$this->_optionsToString($options, array('handle', 'constraint')), $this->dragOptions
);
return $this->Javascript->codeBlock("{$var}new Draggable('$id', " .$options . ");");
}
/**
* For a reference on the options for this function, check out
* http://github.com/madrobby/scriptaculous/wikis/droppables
*
* @param unknown_type $id
* @param array $options
* @return string
*/
function drop($id, $options = array()) {
$optionsString = array('overlap', 'hoverclass');
if (!isset($options['accept']) || !is_array($options['accept'])) {
$optionsString[] = 'accept';
} else if (isset($options['accept'])) {
$options['accept'] = $this->Javascript->object($options['accept']);
}
$options = $this->_buildOptions(
$this->_optionsToString($options, $optionsString), $this->dropOptions
);
return $this->Javascript->codeBlock("Droppables.add('{$id}', {$options});");
}
/**
* Make an element with the given $id droppable, and trigger an Ajax call when a draggable is
* dropped on it.
*
* For a reference on the options for this function, check out
* http://wiki.script.aculo.us/scriptaculous/show/Droppables.add
*
* @param string $id
* @param array $options
* @param array $ajaxOptions
* @return string JavaScript block to create a droppable element
*/
function dropRemote($id, $options = array(), $ajaxOptions = array()) {
$callback = $this->remoteFunction($ajaxOptions);
$options['onDrop'] = "function(element, droppable, event) {{$callback}}";
$optionsString = array('overlap', 'hoverclass');
if (!isset($options['accept']) || !is_array($options['accept'])) {
$optionsString[] = 'accept';
} else if (isset($options['accept'])) {
$options['accept'] = $this->Javascript->object($options['accept']);
}
$options = $this->_buildOptions(
$this->_optionsToString($options, $optionsString),
$this->dropOptions
);
return $this->Javascript->codeBlock("Droppables.add('{$id}', {$options});");
}
/**
* Makes a slider control.
*
* @param string $id DOM ID of slider handle
* @param string $trackId DOM ID of slider track
* @param array $options Array of options to control the slider
* @link http://github.com/madrobby/scriptaculous/wikis/slider
*/
function slider($id, $trackId, $options = array()) {
if (isset($options['var'])) {
$var = 'var ' . $options['var'] . ' = ';
unset($options['var']);
} else {
$var = 'var ' . $id . ' = ';
}
$options = $this->_optionsToString($options, array(
'axis', 'handleImage', 'handleDisabled'
));
$callbacks = array('change', 'slide');
foreach ($callbacks as $callback) {
if (isset($options[$callback])) {
$call = $options[$callback];
$options['on' . ucfirst($callback)] = "function(value) {{$call}}";
unset($options[$callback]);
}
}
if (isset($options['values']) && is_array($options['values'])) {
$options['values'] = $this->Javascript->object($options['values']);
}
$options = $this->_buildOptions($options, $this->sliderOptions);
$script = "{$var}new Control.Slider('$id', '$trackId', $options);";
return $this->Javascript->codeBlock($script);
}
/**
* Makes an Ajax In Place editor control.
*
* @param string $id DOM ID of input element
* @param string $url Postback URL of saved data
* @param array $options Array of options to control the editor, including ajaxOptions (see link).
* @link http://github.com/madrobby/scriptaculous/wikis/ajax-inplaceeditor
*/
function editor($id, $url, $options = array()) {
$url = $this->url($url);
$options['ajaxOptions'] = $this->__optionsForAjax($options);
foreach ($this->ajaxOptions as $opt) {
if (isset($options[$opt])) {
unset($options[$opt]);
}
}
if (isset($options['callback'])) {
$options['callback'] = 'function(form, value) {' . $options['callback'] . '}';
}
$type = 'InPlaceEditor';
if (isset($options['collection']) && is_array($options['collection'])) {
$options['collection'] = $this->Javascript->object($options['collection']);
$type = 'InPlaceCollectionEditor';
}
$var = '';
if (isset($options['var'])) {
$var = 'var ' . $options['var'] . ' = ';
unset($options['var']);
}
$options = $this->_optionsToString($options, array(
'okText', 'cancelText', 'savingText', 'formId', 'externalControl', 'highlightcolor',
'highlightendcolor', 'savingClassName', 'formClassName', 'loadTextURL', 'loadingText',
'clickToEditText', 'okControl', 'cancelControl'
));
$options = $this->_buildOptions($options, $this->editorOptions);
$script = "{$var}new Ajax.{$type}('{$id}', '{$url}', {$options});";
return $this->Javascript->codeBlock($script);
}
/**
* Makes a list or group of floated objects sortable.
*
* @param string $id DOM ID of parent
* @param array $options Array of options to control sort.
* @link http://github.com/madrobby/scriptaculous/wikis/sortable
*/
function sortable($id, $options = array()) {
if (!empty($options['url'])) {
if (empty($options['with'])) {
$options['with'] = "Sortable.serialize('$id')";
}
$options['onUpdate'] = 'function(sortable) {' . $this->remoteFunction($options) . '}';
}
$block = true;
if (isset($options['block'])) {
$block = $options['block'];
unset($options['block']);
}
$strings = array(
'tag', 'constraint', 'only', 'handle', 'hoverclass', 'tree',
'treeTag', 'update', 'overlap'
);
$scrollIsObject = (
isset($options['scroll']) &&
$options['scroll'] != 'window' &&
strpos($options['scroll'], '$(') !== 0
);
if ($scrollIsObject) {
$strings[] = 'scroll';
}
$options = $this->_optionsToString($options, $strings);
$options = array_merge($options, $this->_buildCallbacks($options));
$options = $this->_buildOptions($options, $this->sortOptions);
$result = "Sortable.create('$id', $options);";
if (!$block) {
return $result;
}
return $this->Javascript->codeBlock($result);
}
/**
* Private helper function for Javascript.
*
* @param array $options Set of options
* @access private
*/
function __optionsForAjax($options) {
if (isset($options['indicator'])) {
if (isset($options['loading'])) {
$loading = $options['loading'];
if (!empty($loading) && substr(trim($loading), -1, 1) != ';') {
$options['loading'] .= '; ';
}
$options['loading'] .= "Element.show('{$options['indicator']}');";
} else {
$options['loading'] = "Element.show('{$options['indicator']}');";
}
if (isset($options['complete'])) {
$complete = $options['complete'];
if (!empty($complete) && substr(trim($complete), -1, 1) != ';') {
$options['complete'] .= '; ';
}
$options['complete'] .= "Element.hide('{$options['indicator']}');";
} else {
$options['complete'] = "Element.hide('{$options['indicator']}');";
}
unset($options['indicator']);
}
$jsOptions = array_merge(
array('asynchronous' => 'true', 'evalScripts' => 'true'),
$this->_buildCallbacks($options)
);
$options = $this->_optionsToString($options, array(
'contentType', 'encoding', 'fallback', 'method', 'postBody', 'update', 'url'
));
$jsOptions = array_merge($jsOptions, array_intersect_key($options, array_flip(array(
'contentType', 'encoding', 'method', 'postBody'
))));
foreach ($options as $key => $value) {
switch ($key) {
case 'type':
$jsOptions['asynchronous'] = ($value == 'synchronous') ? 'false' : 'true';
break;
case 'evalScripts':
$jsOptions['evalScripts'] = ($value) ? 'true' : 'false';
break;
case 'position':
$pos = Inflector::camelize($options['position']);
$jsOptions['insertion'] = "Insertion.{$pos}";
break;
case 'with':
$jsOptions['parameters'] = $options['with'];
break;
case 'form':
$jsOptions['parameters'] = 'Form.serialize(this)';
break;
case 'requestHeaders':
$keys = array();
foreach ($value as $key => $val) {
$keys[] = "'" . $key . "'";
$keys[] = "'" . $val . "'";
}
$jsOptions['requestHeaders'] = '[' . join(', ', $keys) . ']';
break;
}
}
return $this->_buildOptions($jsOptions, $this->ajaxOptions);
}
/**
* Private Method to return a string of html options
* option data as a JavaScript options hash.
*
* @param array $options Options in the shape of keys and values
* @param array $extra Array of legal keys in this options context
* @return array Array of html options
* @access private
*/
function __getHtmlOptions($options, $extra = array()) {
foreach (array_merge($this->ajaxOptions, $this->callbacks, $extra) as $key) {
if (isset($options[$key])) {
unset($options[$key]);
}
}
return $options;
}
/**
* Returns a string of JavaScript with the given option data as a JavaScript options hash.
*
* @param array $options Options in the shape of keys and values
* @param array $acceptable Array of legal keys in this options context
* @return string String of Javascript array definition
*/
function _buildOptions($options, $acceptable) {
if (is_array($options)) {
$out = array();
foreach ($options as $k => $v) {
if (in_array($k, $acceptable)) {
if ($v === true) {
$v = 'true';
} elseif ($v === false) {
$v = 'false';
}
$out[] = "$k:$v";
} elseif ($k === 'with' && in_array('parameters', $acceptable)) {
$out[] = "parameters:${v}";
}
}
$out = join(', ', $out);
$out = '{' . $out . '}';
return $out;
} else {
return false;
}
}
/**
* Return JavaScript text for an observer...
*
* @param string $klass Name of JavaScript class
* @param string $name
* @param array $options Ajax options
* @return string Formatted JavaScript
*/
function _buildObserver($klass, $name, $options = null) {
if (!isset($options['with']) && isset($options['update'])) {
$options['with'] = 'value';
}
$callback = $this->remoteFunction($options);
$hasFrequency = !(!isset($options['frequency']) || intval($options['frequency']) == 0);
$frequency = $hasFrequency ? $options['frequency'] . ', ' : '';
return "new $klass('$name', {$frequency}function(element, value) {{$callback}})";
}
/**
* Return Javascript text for callbacks.
*
* @param array $options Option array where a callback is specified
* @return array Options with their callbacks properly set
* @access protected
*/
function _buildCallbacks($options) {
$callbacks = array();
foreach ($this->callbacks as $callback) {
if (isset($options[$callback])) {
$name = 'on' . ucfirst($callback);
$code = $options[$callback];
switch ($name) {
case 'onComplete':
$callbacks[$name] = "function(request, json) {" . $code . "}";
break;
case 'onCreate':
$callbacks[$name] = "function(request, xhr) {" . $code . "}";
break;
case 'onException':
$callbacks[$name] = "function(request, exception) {" . $code . "}";
break;
default:
$callbacks[$name] = "function(request) {" . $code . "}";
break;
}
if (isset($options['bind'])) {
$bind = $options['bind'];
$hasBinding = (
(is_array($bind) && in_array($callback, $bind)) ||
(is_string($bind) && strpos($bind, $callback) !== false)
);
if ($hasBinding) {
$callbacks[$name] .= ".bind(this)";
}
}
}
}
return $callbacks;
}
/**
* Returns a string of JavaScript with a string representation of given options array.
*
* @param array $options Ajax options array
* @param array $stringOpts Options as strings in an array
* @access private
* @return array
*/
function _optionsToString($options, $stringOpts = array()) {
foreach ($stringOpts as $option) {
$hasOption = (
isset($options[$option]) && !empty($options[$option]) &&
is_string($options[$option]) && $options[$option][0] != "'"
);
if ($hasOption) {
if ($options[$option] === true || $options[$option] === 'true') {
$options[$option] = 'true';
} elseif ($options[$option] === false || $options[$option] === 'false') {
$options[$option] = 'false';
} else {
$options[$option] = "'{$options[$option]}'";
}
}
}
return $options;
}
/**
* Executed after a view has rendered, used to include bufferred code
* blocks.
*
* @access public
*/
function afterRender() {
if (env('HTTP_X_UPDATE') != null && !empty($this->__ajaxBuffer)) {
@ob_end_clean();
$data = array();
$divs = explode(' ', env('HTTP_X_UPDATE'));
$keys = array_keys($this->__ajaxBuffer);
if (count($divs) == 1 && in_array($divs[0], $keys)) {
echo $this->__ajaxBuffer[$divs[0]];
} else {
foreach ($this->__ajaxBuffer as $key => $val) {
if (in_array($key, $divs)) {
$data[] = $key . ':"' . rawurlencode($val) . '"';
}
}
$out = 'var __ajaxUpdater__ = {' . join(", \n", $data) . '};' . "\n";
$out .= 'for (n in __ajaxUpdater__) { if (typeof __ajaxUpdater__[n] == "string"';
$out .= ' && $(n)) Element.update($(n), unescape(decodeURIComponent(';
$out .= '__ajaxUpdater__[n]))); }';
echo $this->Javascript->codeBlock($out, false);
}
$scripts = $this->Javascript->getCache();
if (!empty($scripts)) {
echo $this->Javascript->codeBlock($scripts, false);
}
$this->_stop();
}
}
}
?>
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