cakephp2-php8/cake/libs/view/helpers/js.php
mark_story 60981fcb4b Hardcoding 'app' in JsHelper
Applying patch from 'Jelle Henkens'.
Hardcoding this value fixes issues where the variable name
would change if you renamed your app directory.  Fixes environment
specific bugs.
Fixes #1981
2011-09-09 21:35:44 -04:00

1132 lines
34 KiB
PHP

<?php
/**
* Javascript Generator class file.
*
* PHP versions 4 and 5
*
* CakePHP : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2011, Cake Software Foundation, Inc.
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2011, Cake Software Foundation, Inc.
* @link http://cakephp.org CakePHP Project
* @package cake
* @subpackage cake.cake.libs.view.helpers
* @since CakePHP v 1.2
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
/**
* Javascript Generator helper class for easy use of JavaScript.
*
* JsHelper provides an abstract interface for authoring JavaScript with a
* given client-side library.
*
* @package cake
* @subpackage cake.cake.libs.view.helpers
*/
class JsHelper extends AppHelper {
/**
* Whether or not you want scripts to be buffered or output.
*
* @var boolean
* @access public
*/
var $bufferScripts = true;
/**
* helpers
*
* @var array
* @access public
*/
var $helpers = array('Html', 'Form');
/**
* Variables to pass to Javascript.
*
* @var array
* @see JsHelper::set()
* @access private
*/
var $__jsVars = array();
/**
* Scripts that are queued for output
*
* @var array
* @see JsHelper::buffer()
* @access private
*/
var $__bufferedScripts = array();
/**
* Current Javascript Engine that is being used
*
* @var string
* @access private
*/
var $__engineName;
/**
* The javascript variable created by set() variables.
*
* @var string
* @access public
*/
var $setVariable = 'app';
/**
* Constructor - determines engine helper
*
* @param array $settings Settings array contains name of engine helper.
* @return void
* @access public
*/
function __construct($settings = array()) {
$className = 'Jquery';
if (is_array($settings) && isset($settings[0])) {
$className = $settings[0];
} elseif (is_string($settings)) {
$className = $settings;
}
$engineName = $className;
list($plugin, $className) = pluginSplit($className);
$this->__engineName = $className . 'Engine';
$engineClass = $engineName . 'Engine';
$this->helpers[] = $engineClass;
parent::__construct();
}
/**
* call__ Allows for dispatching of methods to the Engine Helper.
* methods in the Engines bufferedMethods list will be automatically buffered.
* You can control buffering with the buffer param as well. By setting the last parameter to
* any engine method to a boolean you can force or disable buffering.
*
* e.g. `$js->get('#foo')->effect('fadeIn', array('speed' => 'slow'), true);`
*
* Will force buffering for the effect method. If the method takes an options array you may also add
* a 'buffer' param to the options array and control buffering there as well.
*
* e.g. `$js->get('#foo')->event('click', $functionContents, array('buffer' => true));`
*
* The buffer parameter will not be passed onto the EngineHelper.
*
* @param string $method Method to be called
* @param array $params Parameters for the method being called.
* @return mixed Depends on the return of the dispatched method, or it could be an instance of the EngineHelper
* @access public
*/
function call__($method, $params) {
if (isset($this->{$this->__engineName}) && method_exists($this->{$this->__engineName}, $method)) {
$buffer = false;
if (in_array(strtolower($method), $this->{$this->__engineName}->bufferedMethods)) {
$buffer = true;
}
if (count($params) > 0) {
$lastParam = $params[count($params) - 1];
$hasBufferParam = (is_bool($lastParam) || is_array($lastParam) && isset($lastParam['buffer']));
if ($hasBufferParam && is_bool($lastParam)) {
$buffer = $lastParam;
unset($params[count($params) - 1]);
} elseif ($hasBufferParam && is_array($lastParam)) {
$buffer = $lastParam['buffer'];
unset($params['buffer']);
}
}
$out = $this->{$this->__engineName}->dispatchMethod($method, $params);
if ($this->bufferScripts && $buffer && is_string($out)) {
$this->buffer($out);
return null;
}
if (is_object($out) && is_a($out, 'JsBaseEngineHelper')) {
return $this;
}
return $out;
}
if (method_exists($this, $method . '_')) {
return $this->dispatchMethod($method . '_', $params);
}
trigger_error(sprintf(__('JsHelper:: Missing Method %s is undefined', true), $method), E_USER_WARNING);
}
/**
* Workaround for Object::Object() existing. Since Object::object exists, it does not
* fall into call__ and is not passed onto the engine helper. See JsBaseEngineHelper::object() for
* more information on this method.
*
* @param mixed $data Data to convert into JSON
* @param array $options Options to use for encoding JSON. See JsBaseEngineHelper::object() for more details.
* @return string encoded JSON
* @deprecated Remove when support for PHP4 and Object::object are removed.
* @access public
*/
function object($data = array(), $options = array()) {
return $this->{$this->__engineName}->object($data, $options);
}
/**
* Overwrite inherited Helper::value()
* See JsBaseEngineHelper::value() for more information on this method.
*
* @param mixed $val A PHP variable to be converted to JSON
* @param boolean $quoteStrings If false, leaves string values unquoted
* @return string a JavaScript-safe/JSON representation of $val
* @access public
**/
function value($val, $quoteString = true) {
return $this->{$this->__engineName}->value($val, $quoteString);
}
/**
* Writes all Javascript generated so far to a code block or
* caches them to a file and returns a linked script. If no scripts have been
* buffered this method will return null. If the request is an XHR(ajax) request
* onDomReady will be set to false. As the dom is already 'ready'.
*
* ### Options
*
* - `inline` - Set to true to have scripts output as a script block inline
* if `cache` is also true, a script link tag will be generated. (default true)
* - `cache` - Set to true to have scripts cached to a file and linked in (default false)
* - `clear` - Set to false to prevent script cache from being cleared (default true)
* - `onDomReady` - wrap cached scripts in domready event (default true)
* - `safe` - if an inline block is generated should it be wrapped in <![CDATA[ ... ]]> (default true)
*
* @param array $options options for the code block
* @return mixed Completed javascript tag if there are scripts, if there are no buffered
* scripts null will be returned.
* @access public
*/
function writeBuffer($options = array()) {
$domReady = isset($this->params['isAjax']) ? !$this->params['isAjax'] : true;
$defaults = array(
'onDomReady' => $domReady, 'inline' => true,
'cache' => false, 'clear' => true, 'safe' => true
);
$options = array_merge($defaults, $options);
$script = implode("\n", $this->getBuffer($options['clear']));
if (empty($script)) {
return null;
}
if ($options['onDomReady']) {
$script = $this->{$this->__engineName}->domReady($script);
}
$opts = $options;
unset($opts['onDomReady'], $opts['cache'], $opts['clear']);
if (!$options['cache'] && $options['inline']) {
return $this->Html->scriptBlock($script, $opts);
}
if ($options['cache'] && $options['inline']) {
$filename = md5($script);
if (!file_exists(JS . $filename . '.js')) {
cache(str_replace(WWW_ROOT, '', JS) . $filename . '.js', $script, '+999 days', 'public');
}
return $this->Html->script($filename);
}
$this->Html->scriptBlock($script, $opts);
return null;
}
/**
* Write a script to the buffered scripts.
*
* @param string $script Script string to add to the buffer.
* @param boolean $top If true the script will be added to the top of the
* buffered scripts array. If false the bottom.
* @return void
* @access public
*/
function buffer($script, $top = false) {
if ($top) {
array_unshift($this->__bufferedScripts, $script);
} else {
$this->__bufferedScripts[] = $script;
}
}
/**
* Get all the buffered scripts
*
* @param boolean $clear Whether or not to clear the script caches (default true)
* @return array Array of scripts added to the request.
* @access public
*/
function getBuffer($clear = true) {
$this->_createVars();
$scripts = $this->__bufferedScripts;
if ($clear) {
$this->__bufferedScripts = array();
$this->__jsVars = array();
}
return $scripts;
}
/**
* Generates the object string for variables passed to javascript.
*
* @return string Generated JSON object of all set vars
* @access protected
*/
function _createVars() {
if (!empty($this->__jsVars)) {
$setVar = (strpos($this->setVariable, '.')) ? $this->setVariable : 'window.' . $this->setVariable;
$this->buffer($setVar . ' = ' . $this->object($this->__jsVars) . ';', true);
}
}
/**
* Generate an 'Ajax' link. Uses the selected JS engine to create a link
* element that is enhanced with Javascript. Options can include
* both those for HtmlHelper::link() and JsBaseEngine::request(), JsBaseEngine::event();
*
* ### Options
*
* - `confirm` - Generate a confirm() dialog before sending the event.
* - `id` - use a custom id.
* - `htmlAttributes` - additional non-standard htmlAttributes. Standard attributes are class, id,
* rel, title, escape, onblur and onfocus.
* - `buffer` - Disable the buffering and return a script tag in addition to the link.
*
* @param string $title Title for the link.
* @param mixed $url Mixed either a string URL or an cake url array.
* @param array $options Options for both the HTML element and Js::request()
* @return string Completed link. If buffering is disabled a script tag will be returned as well.
* @access public
*/
function link($title, $url = null, $options = array()) {
if (!isset($options['id'])) {
$options['id'] = 'link-' . intval(mt_rand());
}
list($options, $htmlOptions) = $this->_getHtmlOptions($options);
$out = $this->Html->link($title, $url, $htmlOptions);
$this->get('#' . $htmlOptions['id']);
$requestString = $event = '';
if (isset($options['confirm'])) {
$requestString = $this->confirmReturn($options['confirm']);
unset($options['confirm']);
}
$buffer = isset($options['buffer']) ? $options['buffer'] : null;
$safe = isset($options['safe']) ? $options['safe'] : true;
unset($options['buffer'], $options['safe']);
$requestString .= $this->request($url, $options);
if (!empty($requestString)) {
$event = $this->event('click', $requestString, $options + array('buffer' => $buffer));
}
if (isset($buffer) && !$buffer) {
$opts = array('safe' => $safe);
$out .= $this->Html->scriptBlock($event, $opts);
}
return $out;
}
/**
* Pass variables into Javascript. Allows you to set variables that will be
* output when the buffer is fetched with `JsHelper::getBuffer()` or `JsHelper::writeBuffer()`
* The Javascript variable used to output set variables can be controlled with `JsHelper::$setVariable`
*
* @param mixed $one Either an array of variables to set, or the name of the variable to set.
* @param mixed $two If $one is a string, $two is the value for that key.
* @return void
* @access public
*/
function set($one, $two = null) {
$data = null;
if (is_array($one)) {
if (is_array($two)) {
$data = array_combine($one, $two);
} else {
$data = $one;
}
} else {
$data = array($one => $two);
}
if ($data == null) {
return false;
}
$this->__jsVars = array_merge($this->__jsVars, $data);
}
/**
* Uses the selected JS engine to create a submit input
* element that is enhanced with Javascript. Options can include
* both those for FormHelper::submit() and JsBaseEngine::request(), JsBaseEngine::event();
*
* Forms submitting with this method, cannot send files. Files do not transfer over XmlHttpRequest
* and require an iframe or flash.
*
* ### Options
*
* - `url` The url you wish the XHR request to submit to.
* - `confirm` A string to use for a confirm() message prior to submitting the request.
* - `method` The method you wish the form to send by, defaults to POST
* - `buffer` Whether or not you wish the script code to be buffered, defaults to true.
* - Also see options for JsHelper::request() and JsHelper::event()
*
* @param string $title The display text of the submit button.
* @param array $options Array of options to use. See the options for the above mentioned methods.
* @return string Completed submit button.
* @access public
*/
function submit($caption = null, $options = array()) {
if (!isset($options['id'])) {
$options['id'] = 'submit-' . intval(mt_rand());
}
$formOptions = array('div');
list($options, $htmlOptions) = $this->_getHtmlOptions($options, $formOptions);
$out = $this->Form->submit($caption, $htmlOptions);
$this->get('#' . $htmlOptions['id']);
$options['data'] = $this->serializeForm(array('isForm' => false, 'inline' => true));
$requestString = $url = '';
if (isset($options['confirm'])) {
$requestString = $this->confirmReturn($options['confirm']);
unset($options['confirm']);
}
if (isset($options['url'])) {
$url = $options['url'];
unset($options['url']);
}
if (!isset($options['method'])) {
$options['method'] = 'post';
}
$options['dataExpression'] = true;
$buffer = isset($options['buffer']) ? $options['buffer'] : null;
$safe = isset($options['safe']) ? $options['safe'] : true;
unset($options['buffer'], $options['safe']);
$requestString .= $this->request($url, $options);
if (!empty($requestString)) {
$event = $this->event('click', $requestString, $options + array('buffer' => $buffer));
}
if (isset($buffer) && !$buffer) {
$opts = array('safe' => $safe);
$out .= $this->Html->scriptBlock($event, $opts);
}
return $out;
}
/**
* Parse a set of Options and extract the Html options.
* Extracted Html Options are removed from the $options param.
*
* @param array $options Options to filter.
* @param array $additional Array of additional keys to extract and include in the return options array.
* @return array Array of js options and Htmloptions
* @access protected
*/
function _getHtmlOptions($options, $additional = array()) {
$htmlKeys = array_merge(
array('class', 'id', 'escape', 'onblur', 'onfocus', 'rel', 'title', 'style'),
$additional
);
$htmlOptions = array();
foreach ($htmlKeys as $key) {
if (isset($options[$key])) {
$htmlOptions[$key] = $options[$key];
}
unset($options[$key]);
}
if (isset($options['htmlAttributes'])) {
$htmlOptions = array_merge($htmlOptions, $options['htmlAttributes']);
unset($options['htmlAttributes']);
}
return array($options, $htmlOptions);
}
}
/**
* JsEngineBaseClass
*
* Abstract Base Class for All JsEngines to extend. Provides generic methods.
*
* @package cake.view.helpers
*/
class JsBaseEngineHelper extends AppHelper {
/**
* Determines whether native JSON extension is used for encoding. Set by object constructor.
*
* @var boolean
* @access public
*/
var $useNative = false;
/**
* The js snippet for the current selection.
*
* @var string
* @access public
*/
var $selection;
/**
* Collection of option maps. Option maps allow other helpers to use generic names for engine
* callbacks and options. Allowing uniform code access for all engine types. Their use is optional
* for end user use though.
*
* @var array
* @access protected
*/
var $_optionMap = array();
/**
* An array of lowercase method names in the Engine that are buffered unless otherwise disabled.
* This allows specific 'end point' methods to be automatically buffered by the JsHelper.
*
* @var array
* @access public
*/
var $bufferedMethods = array('event', 'sortable', 'drag', 'drop', 'slider');
/**
* Contains a list of callback names -> default arguments.
*
* @var array
* @access protected
*/
var $_callbackArguments = array();
/**
* Constructor.
*
* @return void
*/
function __construct() {
parent::__construct();
$this->useNative = function_exists('json_encode');
}
/**
* Create an `alert()` message in Javascript
*
* @param string $message Message you want to alter.
* @return string completed alert()
* @access public
*/
function alert($message) {
return 'alert("' . $this->escape($message) . '");';
}
/**
* Redirects to a URL. Creates a window.location modification snippet
* that can be used to trigger 'redirects' from Javascript.
*
* @param mixed $url
* @param array $options
* @return string completed redirect in javascript
* @access public
*/
function redirect($url = null) {
return 'window.location = "' . Router::url($url) . '";';
}
/**
* Create a `confirm()` message
*
* @param string $message Message you want confirmed.
* @return string completed confirm()
* @access public
*/
function confirm($message) {
return 'confirm("' . $this->escape($message) . '");';
}
/**
* Generate a confirm snippet that returns false from the current
* function scope.
*
* @param string $message Message to use in the confirm dialog.
* @return string completed confirm with return script
* @access public
*/
function confirmReturn($message) {
$out = 'var _confirm = ' . $this->confirm($message);
$out .= "if (!_confirm) {\n\treturn false;\n}";
return $out;
}
/**
* Create a `prompt()` Javascript function
*
* @param string $message Message you want to prompt.
* @param string $default Default message
* @return string completed prompt()
* @access public
*/
function prompt($message, $default = '') {
return 'prompt("' . $this->escape($message) . '", "' . $this->escape($default) . '");';
}
/**
* Generates a JavaScript object in JavaScript Object Notation (JSON)
* from an array. Will use native JSON encode method if available, and $useNative == true
*
* ### Options:
*
* - `prefix` - String prepended to the returned data.
* - `postfix` - String appended to the returned data.
*
* @param array $data Data to be converted.
* @param array $options Set of options, see above.
* @return string A JSON code block
* @access public
*/
function object($data = array(), $options = array()) {
$defaultOptions = array(
'prefix' => '', 'postfix' => '',
);
$options = array_merge($defaultOptions, $options);
if (is_object($data)) {
$data = get_object_vars($data);
}
$out = $keys = array();
$numeric = true;
if ($this->useNative && function_exists('json_encode')) {
$rt = json_encode($data);
} else {
if (is_null($data)) {
return 'null';
}
if (is_bool($data)) {
return $data ? 'true' : 'false';
}
if (is_array($data)) {
$keys = array_keys($data);
}
if (!empty($keys)) {
$numeric = (array_values($keys) === array_keys(array_values($keys)));
}
foreach ($data as $key => $val) {
if (is_array($val) || is_object($val)) {
$val = $this->object($val);
} else {
$val = $this->value($val);
}
if (!$numeric) {
$val = '"' . $this->value($key, false) . '":' . $val;
}
$out[] = $val;
}
if (!$numeric) {
$rt = '{' . join(',', $out) . '}';
} else {
$rt = '[' . join(',', $out) . ']';
}
}
$rt = $options['prefix'] . $rt . $options['postfix'];
return $rt;
}
/**
* Converts a PHP-native variable of any type to a JSON-equivalent representation
*
* @param mixed $val A PHP variable to be converted to JSON
* @param boolean $quoteStrings If false, leaves string values unquoted
* @return string a JavaScript-safe/JSON representation of $val
* @access public
*/
function value($val, $quoteString = true) {
switch (true) {
case (is_array($val) || is_object($val)):
$val = $this->object($val);
break;
case ($val === null):
$val = 'null';
break;
case (is_bool($val)):
$val = ($val === true) ? 'true' : 'false';
break;
case (is_int($val)):
$val = $val;
break;
case (is_float($val)):
$val = sprintf("%.11f", $val);
break;
default:
$val = $this->escape($val);
if ($quoteString) {
$val = '"' . $val . '"';
}
break;
}
return $val;
}
/**
* Escape a string to be JSON friendly.
*
* List of escaped elements:
*
* - "\r" => '\n'
* - "\n" => '\n'
* - '"' => '\"'
*
* @param string $script String that needs to get escaped.
* @return string Escaped string.
* @access public
*/
function escape($string) {
App::import('Core', 'Multibyte');
return $this->_utf8ToHex($string);
}
/**
* Encode a string into JSON. Converts and escapes necessary characters.
*
* @param string $string The string that needs to be utf8->hex encoded
* @return void
* @access protected
*/
function _utf8ToHex($string) {
$length = strlen($string);
$return = '';
for ($i = 0; $i < $length; ++$i) {
$ord = ord($string{$i});
switch (true) {
case $ord == 0x08:
$return .= '\b';
break;
case $ord == 0x09:
$return .= '\t';
break;
case $ord == 0x0A:
$return .= '\n';
break;
case $ord == 0x0C:
$return .= '\f';
break;
case $ord == 0x0D:
$return .= '\r';
break;
case $ord == 0x22:
case $ord == 0x2F:
case $ord == 0x5C:
$return .= '\\' . $string{$i};
break;
case (($ord >= 0x20) && ($ord <= 0x7F)):
$return .= $string{$i};
break;
case (($ord & 0xE0) == 0xC0):
if ($i + 1 >= $length) {
$i += 1;
$return .= '?';
break;
}
$charbits = $string{$i} . $string{$i + 1};
$char = Multibyte::utf8($charbits);
$return .= sprintf('\u%04s', dechex($char[0]));
$i += 1;
break;
case (($ord & 0xF0) == 0xE0):
if ($i + 2 >= $length) {
$i += 2;
$return .= '?';
break;
}
$charbits = $string{$i} . $string{$i + 1} . $string{$i + 2};
$char = Multibyte::utf8($charbits);
$return .= sprintf('\u%04s', dechex($char[0]));
$i += 2;
break;
case (($ord & 0xF8) == 0xF0):
if ($i + 3 >= $length) {
$i += 3;
$return .= '?';
break;
}
$charbits = $string{$i} . $string{$i + 1} . $string{$i + 2} . $string{$i + 3};
$char = Multibyte::utf8($charbits);
$return .= sprintf('\u%04s', dechex($char[0]));
$i += 3;
break;
case (($ord & 0xFC) == 0xF8):
if ($i + 4 >= $length) {
$i += 4;
$return .= '?';
break;
}
$charbits = $string{$i} . $string{$i + 1} . $string{$i + 2} . $string{$i + 3} . $string{$i + 4};
$char = Multibyte::utf8($charbits);
$return .= sprintf('\u%04s', dechex($char[0]));
$i += 4;
break;
case (($ord & 0xFE) == 0xFC):
if ($i + 5 >= $length) {
$i += 5;
$return .= '?';
break;
}
$charbits = $string{$i} . $string{$i + 1} . $string{$i + 2} . $string{$i + 3} . $string{$i + 4} . $string{$i + 5};
$char = Multibyte::utf8($charbits);
$return .= sprintf('\u%04s', dechex($char[0]));
$i += 5;
break;
}
}
return $return;
}
/**
* Create javascript selector for a CSS rule
*
* @param string $selector The selector that is targeted
* @return object instance of $this. Allows chained methods.
* @access public
*/
function get($selector) {
trigger_error(sprintf(__('%s does not have get() implemented', true), get_class($this)), E_USER_WARNING);
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 to true)
* - `stop` - Whether you want the event to stopped. (defaults to true)
*
* @param string $type Type of event to bind to the current dom id
* @param string $callback The Javascript function you wish to trigger or the function literal
* @param array $options Options for the event.
* @return string completed event handler
* @access public
*/
function event($type, $callback, $options = array()) {
trigger_error(sprintf(__('%s does not have event() implemented', true), get_class($this)), E_USER_WARNING);
}
/**
* Create a domReady event. This is a special event in many libraries
*
* @param string $functionBody The code to run on domReady
* @return string completed domReady method
* @access public
*/
function domReady($functionBody) {
trigger_error(sprintf(__('%s does not have domReady() implemented', true), get_class($this)), E_USER_WARNING);
}
/**
* Create an iteration over the current selection result.
*
* @param string $callback The function body you wish to apply during the iteration.
* @return string completed iteration
*/
function each($callback) {
trigger_error(sprintf(__('%s does not have each() implemented', true), get_class($this)), E_USER_WARNING);
}
/**
* Trigger an Effect.
*
* ### Supported Effects
*
* The following effects are supported by all core JsEngines
*
* - `show` - reveal an element.
* - `hide` - hide an element.
* - `fadeIn` - Fade in an element.
* - `fadeOut` - Fade out an element.
* - `slideIn` - Slide an element in.
* - `slideOut` - Slide an element out.
*
* ### Options
*
* - `speed` - Speed at which the animation should occur. Accepted values are 'slow', 'fast'. Not all effects use
* the speed option.
*
* @param string $name The name of the effect to trigger.
* @param array $options Array of options for the effect.
* @return string completed string with effect.
* @access public
*/
function effect($name, $options) {
trigger_error(sprintf(__('%s does not have effect() implemented', true), get_class($this)), E_USER_WARNING);
}
/**
* Make an XHR request
*
* ### Event Options
*
* - `complete` - Callback to fire on complete.
* - `success` - Callback to fire on success.
* - `before` - Callback to fire on request initialization.
* - `error` - Callback to fire on request failure.
*
* ### Options
*
* - `method` - The method to make the request with defaults to GET in more libraries
* - `async` - Whether or not you want an asynchronous request.
* - `data` - Additional data to send.
* - `update` - Dom id to update with the content of the request.
* - `type` - Data type for response. 'json' and 'html' are supported. Default is html for most libraries.
* - `evalScripts` - Whether or not <script> tags should be eval'ed.
* - `dataExpression` - Should the `data` key be treated as a callback. Useful for supplying `$options['data']` as
* another Javascript expression.
*
* @param mixed $url Array or String URL to target with the request.
* @param array $options Array of options. See above for cross library supported options
* @return string XHR request.
* @access public
*/
function request($url, $options = array()) {
trigger_error(sprintf(__('%s does not have request() implemented', true), get_class($this)), E_USER_WARNING);
}
/**
* Create a draggable element. Works on the currently selected element.
* Additional options may be supported by the library implementation.
*
* ### Options
*
* - `handle` - selector to the handle element.
* - `snapGrid` - The pixel grid that movement snaps to, an array(x, y)
* - `container` - The element that acts as a bounding box for the draggable element.
*
* ### Event Options
*
* - `start` - Event fired when the drag starts
* - `drag` - Event fired on every step of the drag
* - `stop` - Event fired when dragging stops (mouse release)
*
* @param array $options Options array see above.
* @return string Completed drag script
* @access public
*/
function drag($options = array()) {
trigger_error(sprintf(__('%s does not have drag() implemented', true), get_class($this)), E_USER_WARNING);
}
/**
* Create a droppable element. Allows for draggable elements to be dropped on it.
* Additional options may be supported by the library implementation.
*
* ### Options
*
* - `accept` - Selector for elements this droppable will accept.
* - `hoverclass` - Class to add to droppable when a draggable is over.
*
* ### Event Options
*
* - `drop` - Event fired when an element is dropped into the drop zone.
* - `hover` - Event fired when a drag enters a drop zone.
* - `leave` - Event fired when a drag is removed from a drop zone without being dropped.
*
* @return string Completed drop script
* @access public
*/
function drop($options = array()) {
trigger_error(sprintf(__('%s does not have drop() implemented', true), get_class($this)), E_USER_WARNING);
}
/**
* Create a sortable element.
* Additional options may be supported by the library implementation.
*
* ### Options
*
* - `containment` - Container for move action
* - `handle` - Selector to handle element. Only this element will start sort action.
* - `revert` - Whether or not to use an effect to move sortable into final position.
* - `opacity` - Opacity of the placeholder
* - `distance` - Distance a sortable must be dragged before sorting starts.
*
* ### Event Options
*
* - `start` - Event fired when sorting starts
* - `sort` - Event fired during sorting
* - `complete` - Event fired when sorting completes.
*
* @param array $options Array of options for the sortable. See above.
* @return string Completed sortable script.
* @access public
*/
function sortable() {
trigger_error(sprintf(__('%s does not have sortable() implemented', true), get_class($this)), E_USER_WARNING);
}
/**
* Create a slider UI widget. Comprised of a track and knob.
* Additional options may be supported by the library implementation.
*
* ### Options
*
* - `handle` - The id of the element used in sliding.
* - `direction` - The direction of the slider either 'vertical' or 'horizontal'
* - `min` - The min value for the slider.
* - `max` - The max value for the slider.
* - `step` - The number of steps or ticks the slider will have.
* - `value` - The initial offset of the slider.
*
* ### Events
*
* - `change` - Fired when the slider's value is updated
* - `complete` - Fired when the user stops sliding the handle
*
* @return string Completed slider script
* @access public
*/
function slider() {
trigger_error(sprintf(__('%s does not have slider() implemented', true), get_class($this)), E_USER_WARNING);
}
/**
* Serialize the form attached to $selector.
* Pass `true` for $isForm if the current selection is a form element.
* Converts the form or the form element attached to the current selection into a string/json object
* (depending on the library implementation) for use with XHR operations.
*
* ### Options
*
* - `isForm` - is the current selection a form, or an input? (defaults to false)
* - `inline` - is the rendered statement going to be used inside another JS statement? (defaults to false)
*
* @param array $options options for serialization generation.
* @return string completed form serialization script
* @access public
*/
function serializeForm() {
trigger_error(
sprintf(__('%s does not have serializeForm() implemented', true), get_class($this)), E_USER_WARNING
);
}
/**
* Parse an options assoc array into an Javascript object literal.
* Similar to object() but treats any non-integer value as a string,
* does not include `{ }`
*
* @param array $options Options to be converted
* @param array $safeKeys Keys that should not be escaped.
* @return string Parsed JSON options without enclosing { }.
* @access protected
*/
function _parseOptions($options, $safeKeys = array()) {
$out = array();
$safeKeys = array_flip($safeKeys);
foreach ($options as $key => $value) {
if (!is_int($value) && !isset($safeKeys[$key])) {
$value = $this->value($value);
}
$out[] = $key . ':' . $value;
}
sort($out);
return join(', ', $out);
}
/**
* 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 $options Array of options to map.
* @return array Array of mapped options.
* @access protected
*/
function _mapOptions($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 string $callbacks Additional Keys that contain callbacks
* @return array Array of options with callbacks added.
* @access protected
*/
function _prepareCallbacks($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;
}
/**
* Conveinence 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 $options Array of options to process.
* @return string Parsed options string.
* @access protected
*/
function _processOptions($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 $parameters Array of parameters to convert to a query string
* @return string Querystring fragment
* @access protected
*/
function _toQuerystring($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;
}
}