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<?php
/**
* @package com_zoo
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/*
Class: Element
The Element abstract class
*/
abstract class Element {
/*
Variable: $identifier
Element identifier.
*/
public $identifier;
/*
Variable: app
App instance.
*/
public $app;
/*
Variable: $config
Config AppData object.
*/
public $config;
/*
Variable: $_type
Elements related type object.
*/
protected $_type;
/*
Variable: $_item
Elements related item object.
*/
protected $_item;
/*
Variable: $_callbacks
Element callbacks.
*/
protected $_callbacks = array();
/*
Function: Constructor
*/
public function __construct() {
// set app
$this->app = App::getInstance('zoo');
$this->config = $this->app->data->create();
}
/*
Function: getElementType
Gets the elements type.
Returns:
string - the elements type
*/
public function getElementType() {
return strtolower(str_replace('Element', '', get_class($this)));
}
/*
Function: get
Gets the elements data.
Returns:
Mixed - the elements data
*/
public function get($key, $default = null) {
return $this->_item->elements->find("{$this->identifier}.{$key}", $default);
}
/*
Function: set
Sets the elements data.
Returns:
Element - this
*/
public function set($key, $value) {
$this->_item->elements[$this->identifier][$key] = $value;
return $this;
}
/*
Function: bindData
Set data through data array.
Parameters:
$data - array
Returns:
Void
*/
public function bindData($data = array()) {
if (isset($this->_item)) {
$this->_item->elements->set($this->identifier, $data);
}
}
/*
Function: data
Gets data array.
Returns:
Array - data
*/
public function data() {
if (isset($this->_item)) {
return $this->_item->elements->get($this->identifier);
}
return array();
}
/* @deprecated as of version 2.5 beta */
public function getElementData() {
return $this->app->data->create($this->data());
}
/* @deprecated as of version 2.5 beta */
public function getConfig() {
return $this->config;
}
/*
Function: getLayout
Get element layout path and use override if exists.
Returns:
String - Layout path
*/
public function getLayout($layout = null) {
// init vars
$type = $this->getElementType();
// set default
if ($layout == null) {
$layout = "{$type}.php";
}
// find layout
return $this->app->path->path("elements:{$type}/tmpl/{$layout}");
}
/*
Function: getSearchData
Get elements search data.
Returns:
String - Search data
*/
public function getSearchData() {
return null;
}
/*
Function: getItem
Get related item object.
Returns:
Item - item object
*/
public function getItem() {
return $this->_item;
}
/*
Function: getType
Get related type object.
Returns:
Type - type object
*/
public function getType() {
return $this->_type;
}
/*
Function: getGroup
Get element group.
Returns:
string - group
*/
public function getGroup() {
return $this->getMetadata('group');
}
/*
Function: setItem
Set related item object.
Parameters:
$item - item object
Returns:
Void
*/
public function setItem($item) {
$this->_item = $item;
}
/*
Function: setType
Set related type object.
Parameters:
$type - type object
Returns:
Void
*/
public function setType($type) {
$this->_type = $type;
}
/*
Function: hasValue
Checks if the element's value is set.
Parameters:
$params - render parameter
Returns:
Boolean - true, on success
*/
public function hasValue($params = array()) {
$value = $this->get('value', $this->config->get('default'));
return !empty($value);
}
/*
Function: render
Renders the element.
Parameters:
$params - render parameter
Returns:
String - html
*/
public function render($params = array()) {
// render layout
if ($layout = $this->getLayout()) {
return $this->renderLayout($layout, array('value' => $this->get('value')));
}
return $this->get('value');
}
/*
Function: renderLayout
Renders the element using template layout file.
Parameters:
$__layout - layouts template file
$__args - layouts template file args
Returns:
String - html
*/
protected function renderLayout($__layout, $__args = array()) {
// init vars
if (is_array($__args)) {
foreach ($__args as $__var => $__value) {
$$__var = $__value;
}
}
// render layout
$__html = '';
ob_start();
include($__layout);
$__html = ob_get_contents();
ob_end_clean();
return $__html;
}
/*
Function: edit
Renders the edit form field.
Must be overloaded by the child class.
Returns:
String - html
*/
abstract public function edit();
/*
Function: loadAssets
Load elements css/js assets.
Returns:
Void
*/
public function loadAssets() {
return $this;
}
/*
Function: loadConfigAssets
Load elements css/js config assets.
Returns:
Element
*/
public function loadConfigAssets() {
return $this;
}
/*
Function: registerCallback
Register a callback function.
Returns:
Void
*/
public function registerCallback($method) {
if (!in_array(strtolower($method), $this->_callbacks)) {
$this->_callbacks[] = strtolower($method);
}
}
/*
Function: callback
Execute elements callback function.
Returns:
Mixed
*/
public function callback($method, $args = array()) {
// try to call a elements class method
if (in_array(strtolower($method), $this->_callbacks) && method_exists($this, $method)) {
// call method
$res = call_user_func_array(array($this, $method), $args);
// output if method returns a string
if (is_string($res)) {
echo $res;
}
}
}
/*
Function: getConfigForm
Get parameter form object to render input form.
Returns:
Parameter Object
*/
public function getConfigForm() {
// get form
$form = $this->app->parameterform->create();
// get config xml files
$params = array();
$class = new ReflectionClass($this);
while ($class !== false) {
$type = $class->getName() == 'Element' ? 'element' : strtolower(str_replace('Element', '', $class->getName()));
if ($xml = $this->app->path->path("elements:$type/$type.xml")) {
array_unshift($params, $xml);
}
$class = $class->getParentClass();
}
// trigger configparams event
$params = $this->app->event->dispatcher->notify($this->app->event->create($this, 'element:configparams')->setReturnValue($params))->getReturnValue();
// skip if there are no config files
if (empty($params)) {
return null;
}
// add config xml files
foreach ($params as $xml) {
$form->addXML($xml);
}
// set values
$form->setValues($this->config);
// add reference to element
$form->element = $this;
// trigger configform event
$this->app->event->dispatcher->notify($this->app->event->create($this, 'element:configform', compact('form')));
return $form;
}
/*
Function: getMetaData
Get elements xml meta data.
Returns:
Array - Meta information
*/
public function getMetaData($key = null) {
$data = array();
$type = $this->getElementType();
$xml = $this->loadXML();
if (!$xml) {
return false;
}
$data['type'] = $xml->attributes()->type ? (string) $xml->attributes()->type : 'Unknown';
$data['group'] = $xml->attributes()->group ? (string) $xml->attributes()->group : 'Unknown';
$data['hidden'] = $xml->attributes()->hidden ? (string) $xml->attributes()->hidden : 'false';
$data['trusted'] = $xml->attributes()->trusted ? (string) $xml->attributes()->trusted : 'false';
$data['orderable'] = $xml->attributes()->orderable ? (string) $xml->attributes()->orderable : 'false';
$data['name'] = (string) $xml->name;
$data['creationdate'] = $xml->creationDate ? (string) $xml->creationDate : 'Unknown';
$data['author'] = $xml->author ? (string) $xml->author : 'Unknown';
$data['copyright'] = (string) $xml->copyright;
$data['authorEmail'] = (string) $xml->authorEmail;
$data['authorUrl'] = (string) $xml->authorUrl;
$data['version'] = (string) $xml->version;
$data['description'] = (string) $xml->description;
$data = $this->app->data->create($data);
return $key == null ? $data : $data->get($key);
}
/**
* Retrieve Element XML file info
*
* @return Object the XML loaded file
*
* @since 3.0.9
*/
public function loadXML() {
$type = $this->getElementType();
return simplexml_load_file($this->app->path->path("elements:$type/$type.xml"));
}
/*
Function: getControlName
Gets the controle name for given name.
Returns:
String - the control name
*/
public function getControlName($name, $array = false) {
return "elements[{$this->identifier}][{$name}]" . ($array ? "[]":"");
}
/*
Function: canAccess
Check if element is accessible with users access rights.
Returns:
Boolean - True, if access granted
*/
public function canAccess($user = null) {
return $this->app->user->canAccess($user, $this->config->get('access', $this->app->joomla->getDefaultAccess()));
}
/*
Function: getPath
Get path to element's base directory.
Returns:
String - Path
*/
public function getPath() {
return $this->app->path->path("elements:".$this->getElementType());
}
/*
Function: __get
Magic getter for deprecated _data and _config properties
Returns:
misc
*/
public function __get($name) {
switch ($name) {
case '_data':
return $this->getElementData();
case '_config':
return $this->config;
}
}
}
// Declare the interface 'iSubmittable'
interface iSubmittable {
/*
Function: renderSubmission
Renders the element in submission.
Parameters:
$params - AppData submission parameters
Returns:
String - html
*/
public function renderSubmission($params = array());
/*
Function: validateSubmission
Validates the submitted element
Parameters:
$value - AppData value
$params - AppData submission parameters
Returns:
Array - cleaned value
*/
public function validateSubmission($value, $params);
}
// deprecated as of version 2.5.7
interface iSubmissionUpload {
// deprecated as of version 2.5.7 use beforeSubmissionSave callback instead
public function doUpload();
}
/*
Class: ElementException
*/
class ElementException extends AppException {}