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936 lines
23 KiB
936 lines
23 KiB
<?php
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/**
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* Part of the Fuel framework.
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*
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* @package Fuel
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* @version 1.8
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* @author Fuel Development Team
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* @license MIT License
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* @copyright 2010 - 2016 Fuel Development Team
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* @link http://fuelphp.com
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*/
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namespace Fuel\Core;
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class ThemeException extends \FuelException {}
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/**
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* Handles loading theme views and assets.
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*/
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class Theme
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{
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/**
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* All the Theme instances
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*
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* @var array
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*/
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protected static $instances = array();
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/**
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* Acts as a Multiton. Will return the requested instance, or will create
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* a new named one if it does not exist.
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*
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* @param string $name The instance name
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* @param array $config
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* @return Theme
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*/
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public static function instance($name = '_default_', array $config = array())
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{
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if ( ! \array_key_exists($name, static::$instances))
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{
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static::$instances[$name] = static::forge($config);
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}
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return static::$instances[$name];
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}
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/**
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* Gets a new instance of the Theme class.
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*
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* @param array $config Optional config override
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* @return Theme
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*/
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public static function forge(array $config = array())
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{
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return new static($config);
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}
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/**
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* @var Asset_Instance $asset Asset instance for this theme instance
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*/
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public $asset = null;
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/**
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* @var array $paths Possible locations for themes
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*/
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protected $paths = array();
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/**
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* @var View $template View instance for this theme instance template
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*/
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public $template = null;
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/**
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* @var array $active Currently active theme
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*/
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protected $active = array(
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'name' => null,
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'path' => null,
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'asset_base' => false,
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'asset_path' => false,
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'info' => array(),
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);
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/**
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* @var array $fallback Fallback theme
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*/
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protected $fallback = array(
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'name' => null,
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'path' => null,
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'asset_base' => false,
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'asset_path' => false,
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'info' => array(),
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);
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/**
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* @var array $config Theme config
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*/
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protected $config = array(
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'active' => 'default',
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'fallback' => 'default',
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'paths' => array(),
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'assets_folder' => 'themes',
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'view_ext' => '.html',
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'require_info_file' => false,
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'info_file_name' => 'themeinfo.php',
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'use_modules' => false,
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);
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/**
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* @var array $partials Storage for defined template partials
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*/
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protected $partials = array();
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/**
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* @var array $chrome Storage for defined partial chrome
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*/
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protected $chrome = array();
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/**
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* @var array $order Order in which partial sections should be rendered
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*/
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protected $order = array();
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/**
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* Sets up the theme object. If a config is given, it will not use the config
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* file.
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*
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* @param array $config Optional config override
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*/
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public function __construct(array $config = array())
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{
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if (empty($config))
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{
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\Config::load('theme', true, false, true);
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$config = \Config::get('theme', array());
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}
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// Order of this addition is important, do not change this.
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$this->config = $config + $this->config;
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// define the default theme paths...
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$this->add_paths($this->config['paths']);
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// create a unique asset instance for this theme instance...
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$this->asset = \Asset::forge('theme_'.spl_object_hash($this), array('paths' => array()));
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// and set the active and the fallback theme
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$this->active($this->config['active']);
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$this->fallback($this->config['fallback']);
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}
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/**
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* Magic method, returns the output of [static::render].
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*
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* @return string
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* @uses Theme::render
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*/
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public function __toString()
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{
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try
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{
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return (string) $this->render();
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}
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catch (\Exception $e)
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{
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\Errorhandler::exception_handler($e);
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return '';
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}
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}
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/**
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* Sets the currently active theme. Will return the currently active
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* theme. It will throw a \ThemeException if it cannot locate the theme.
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*
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* @param string $theme Theme name to set active
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* @return array The theme array
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* @throws \ThemeException
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*/
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public function active($theme = null)
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{
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return $this->set_theme($theme, 'active');
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}
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/**
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* Sets the fallback theme. This theme will be used if a view or asset
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* cannot be found in the active theme. Will return the fallback
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* theme. It will throw a \ThemeException if it cannot locate the theme.
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*
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* @param string $theme Theme name to set active
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* @return array The theme array
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* @throws \ThemeException
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*/
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public function fallback($theme = null)
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{
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return $this->set_theme($theme, 'fallback');
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}
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/**
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* Loads a view from the currently active theme, the fallback theme, or
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* via the standard FuelPHP cascading file system for views
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*
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* @param string $view View name
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* @param array $data View data
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* @param bool $auto_filter Auto filter the view data
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* @return View New View object
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* @throws \ThemeException
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*/
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public function view($view, $data = array(), $auto_filter = null)
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{
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if ($this->active['path'] === null)
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{
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throw new \ThemeException('You must set an active theme.');
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}
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return \View::forge($this->find_file($view), $data, $auto_filter);
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}
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/**
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* Loads a viewmodel, and have it use the view from the currently active theme,
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* the fallback theme, or the standard FuelPHP cascading file system
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*
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* @param string $view ViewModel classname without View_ prefix or full classname
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* @param string $method Method to execute
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* @param bool $auto_filter Auto filter the view data
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* @return View New View object
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*
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* @deprecated 1.8
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*/
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public function viewmodel($view, $method = 'view', $auto_filter = null)
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{
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return \Viewmodel::forge($view, $method, $auto_filter, $this->find_file($view));
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}
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/**
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* Loads a presenter, and have it use the view from the currently active theme,
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* the fallback theme, or the standard FuelPHP cascading file system
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*
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* @param string $presenter Presenter classname without View_ prefix or full classname
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* @param string $method Method to execute
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* @param bool $auto_filter Auto filter the view data
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* @param string $view Custom View to associate with this persenter
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* @return Presenter
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*/
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public function presenter($presenter, $method = 'view', $auto_filter = null, $view = null)
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{
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// if no custom view is given, make it equal to the presenter name
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if (is_null($view))
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{
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// loading from a specific namespace?
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if (strpos($presenter, '::') !== false)
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{
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$split = explode('::', $presenter, 2);
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if (isset($split[1]))
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{
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// remove the namespace from the view name
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$view = $split[1];
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}
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}
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else
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{
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$view = $presenter;
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}
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}
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return \Presenter::forge($presenter, $method, $auto_filter, $this->find_file($view));
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}
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/**
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* Loads an asset from the currently loaded theme.
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*
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* @param string $path Relative path to the asset
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* @return string Full asset URL or path if outside docroot
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* @throws \ThemeException
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*/
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public function asset_path($path)
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{
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if ($this->active['path'] === null)
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{
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throw new \ThemeException('You must set an active theme.');
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}
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if ($this->active['asset_base'])
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{
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return $this->active['asset_base'].$path;
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}
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else
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{
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return $this->active['path'].$path;
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}
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}
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/**
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* Sets a template for a theme
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*
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* @param string $template Name of the template view
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* @return View
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*/
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public function set_template($template)
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{
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// make sure the template is a View
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if (is_string($template))
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{
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$this->template = $this->view($template);
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}
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else
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{
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$this->template = $template;
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}
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// return the template view for chaining
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return $this->template;
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}
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/**
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* Get the template view so it can be manipulated
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*
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* @return string|View
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* @throws \ThemeException
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*/
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public function get_template()
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{
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// make sure the partial entry exists
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if (empty($this->template))
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{
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throw new \ThemeException('No valid template could be found. Use set_template() to define a page template.');
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}
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// return the template
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return $this->template;
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}
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/**
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* Define a custom order for a partial section
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*
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* @param string $section name of the partial section
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* @param mixed $order
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* @throws \ThemeException
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*/
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public function set_order($section, $order)
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{
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$this->order[$section] = $order;
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}
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/**
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* Render the partials and the theme template
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*
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* @return string|View
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* @throws \ThemeException
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*/
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public function render()
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{
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// make sure the template to be rendered is defined
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if (empty($this->template))
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{
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throw new \ThemeException('No valid template could be found. Use set_template() to define a page template.');
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}
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// storage for rendered results
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$rendered = array();
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// make sure we have a render ordering for all defined partials
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foreach ($this->partials as $key => $partials)
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{
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if ( ! isset($this->order[$key]))
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{
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$this->order[$key] = 0;
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}
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}
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// determine the rendering sequence
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asort($this->order, SORT_NUMERIC);
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// pre-process all defined partials in defined order
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foreach ($this->order as $key => $order)
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{
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$output = '';
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if (isset($this->partials[$key]))
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{
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foreach ($this->partials[$key] as $index => $partial)
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{
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// render the partial
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if (is_callable(array($partial, 'render')))
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{
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$output .= $partial->render();
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}
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else
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{
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$output .= $partial;
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}
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}
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}
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// store the rendered output
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if ( ! empty($output) and array_key_exists($key, $this->chrome))
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{
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// encapsulate the partial in the chrome template
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$rendered[$key] = $this->chrome[$key]['view']->set($this->chrome[$key]['var'], $output, false);
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}
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else
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{
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// store the partial output
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$rendered[$key] = $output;
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}
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}
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// assign the partials to the template
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$this->template->set('partials', $rendered, false);
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// return the template
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return $this->template;
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}
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/**
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* Sets a partial for the current template
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*
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* @param string $section Name of the partial section in the template
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* @param string|View|ViewModel|Presenter $view View, or name of the view
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* @param bool $overwrite If true overwrite any already defined partials for this section
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* @return View
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*/
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public function set_partial($section, $view, $overwrite = false)
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{
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// make sure the partial entry exists
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array_key_exists($section, $this->partials) or $this->partials[$section] = array();
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// make sure the partial is a view
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if (is_string($view))
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{
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$name = $view;
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$view = $this->view($view);
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}
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else
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{
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$name = 'partial_'.count($this->partials[$section]);
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}
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// store the partial
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if ($overwrite)
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{
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$this->partials[$section] = array($name => $view);
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}
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else
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{
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$this->partials[$section][$name] = $view;
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}
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// return the partial view object for chaining
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return $this->partials[$section][$name];
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}
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/**
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* Get a partial so it can be manipulated
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*
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* @param string $section Name of the partial section in the template
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* @param string $view name of the view
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* @return View
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* @throws \ThemeException
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*/
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public function get_partial($section, $view)
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{
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// make sure the partial entry exists
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if ( ! array_key_exists($section, $this->partials) or ! array_key_exists($view, $this->partials[$section]))
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{
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throw new \ThemeException(sprintf('No partial named "%s" can be found in the "%s" section.', $view, $section));
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}
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return $this->partials[$section][$view];
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}
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/**
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* Returns whether or not a section has partials defined
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*
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* @param string $section Name of the partial section in the template
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* @return bool
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*/
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public function has_partials($section)
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{
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return $this->partial_count($section) > 0;
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}
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/**
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* Returns the number of partials defined for a section
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*
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* @param string $section Name of the partial section in the template
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* @return int
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*/
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public function partial_count($section)
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{
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// return the defined partial count
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return array_key_exists($section, $this->partials) ? count($this->partials[$section]) : 0;
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}
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/**
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* Sets a chrome for a partial
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*
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* @param string $section Name of the partial section in the template
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* @param string|View|ViewModel|Presenter $view chrome View, or name of the view
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* @param string $var Name of the variable in the chrome that will output the partial
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*
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* @return View|ViewModel|Presenter, the view partial
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*/
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public function set_chrome($section, $view, $var = 'content')
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{
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// make sure the chrome is a view
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if (is_string($view))
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{
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$view = $this->view($view);
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}
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$this->chrome[$section] = array('var' => $var, 'view' => $view);
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return $view;
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}
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/**
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* Get a set chrome view
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*
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* @param string $section Name of the partial section in the template
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* @return mixed
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* @throws \ThemeException
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*/
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public function get_chrome($section)
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{
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// make sure the partial entry exists
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if ( ! array_key_exists($section, $this->chrome))
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{
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throw new \ThemeException(sprintf('No chrome for a partial named "%s" can be found.', $section));
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}
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return $this->chrome[$section]['view'];
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}
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|
|
/**
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* Adds the given path to the theme search path.
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*
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* @param string $path Path to add
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* @return void
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*/
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public function add_path($path)
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{
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$this->paths[] = rtrim($path, DS).DS;
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}
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|
|
|
/**
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* Adds the given paths to the theme search path.
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*
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* @param array $paths Paths to add
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* @return void
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*/
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public function add_paths(array $paths)
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{
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array_walk($paths, array($this, 'add_path'));
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}
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|
|
/**
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* Finds the given theme by searching through all of the theme paths. If
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* found it will return the path, else it will return `false`.
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*
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* @param string $theme Theme to find
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* @return string|false Path or false if not found
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*/
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public function find($theme)
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{
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foreach ($this->paths as $path)
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{
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if (is_dir($path.$theme))
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{
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return $path.$theme.DS;
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}
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}
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return false;
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}
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|
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/**
|
|
* Gets an array of all themes in all theme paths, sorted alphabetically.
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*
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* @return array
|
|
*/
|
|
public function all()
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|
{
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$themes = array();
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foreach ($this->paths as $path)
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{
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$iterator = new \GlobIterator($path.'*');
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foreach($iterator as $theme)
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{
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$themes[] = $theme->getFilename();
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}
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}
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sort($themes);
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return $themes;
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}
|
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|
|
/**
|
|
* Get a value from the info array
|
|
*
|
|
* @param mixed $var
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|
* @param mixed $default
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* @param mixed $theme
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* @return mixed
|
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* @throws \ThemeException
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|
*/
|
|
public function get_info($var = null, $default = null, $theme = null)
|
|
{
|
|
// if no theme is given
|
|
if ($theme === null)
|
|
{
|
|
// if no var to search is given return the entire active info array
|
|
if ($var === null)
|
|
{
|
|
return $this->active['info'];
|
|
}
|
|
|
|
// find the value in the active theme info
|
|
if (($value = \Arr::get($this->active['info'], $var, null)) !== null)
|
|
{
|
|
return $value;
|
|
}
|
|
|
|
// and if not found, check the fallback
|
|
elseif (($value = \Arr::get($this->fallback['info'], $var, null)) !== null)
|
|
{
|
|
return $value;
|
|
}
|
|
}
|
|
|
|
// or if we have a specific theme
|
|
else
|
|
{
|
|
// fetch the info from that theme
|
|
$info = $this->load_info($theme);
|
|
|
|
// and return the requested value
|
|
return $var === null ? $info : \Arr::get($info, $var, $default);
|
|
}
|
|
|
|
// not found, return the given default value
|
|
return $default;
|
|
}
|
|
|
|
/**
|
|
* Set a value in the info array
|
|
*
|
|
* @return Theme
|
|
*/
|
|
public function set_info($var, $value = null, $type = 'active')
|
|
{
|
|
if ($type == 'active')
|
|
{
|
|
\Arr::set($this->active['info'], $var, $value);
|
|
}
|
|
elseif ($type == 'fallback')
|
|
{
|
|
\Arr::set($this->fallback['info'], $var, $value);
|
|
}
|
|
|
|
// return for chaining
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Load in the theme.info file for the given (or active) theme.
|
|
*
|
|
* @param string $theme Name of the theme (null for active)
|
|
* @return array Theme info array
|
|
* @throws \ThemeException
|
|
*/
|
|
public function load_info($theme = null)
|
|
{
|
|
if ($theme === null)
|
|
{
|
|
$theme = $this->active;
|
|
}
|
|
|
|
if (is_array($theme))
|
|
{
|
|
$path = $theme['path'];
|
|
$name = $theme['name'];
|
|
}
|
|
else
|
|
{
|
|
$path = $this->find($theme);
|
|
$name = $theme;
|
|
$theme = array(
|
|
'name' => $name,
|
|
'path' => $path,
|
|
);
|
|
}
|
|
|
|
if ( ! $path)
|
|
{
|
|
throw new \ThemeException(sprintf('Could not find theme "%s".', $theme));
|
|
}
|
|
|
|
if (($file = $this->find_file($this->config['info_file_name'], array($theme))) == $this->config['info_file_name'])
|
|
{
|
|
if ($this->config['require_info_file'])
|
|
{
|
|
throw new \ThemeException(sprintf('Theme "%s" is missing "%s".', $name, $this->config['info_file_name']));
|
|
}
|
|
else
|
|
{
|
|
return array();
|
|
}
|
|
}
|
|
|
|
return \Config::load($file, false, true);
|
|
}
|
|
|
|
/**
|
|
* Save the theme.info file for the active (or fallback) theme.
|
|
*
|
|
* @param string $type Name of the theme (null for active)
|
|
* @return array Theme info array
|
|
* @throws \ThemeException
|
|
*/
|
|
public function save_info($type = 'active')
|
|
{
|
|
if ($type == 'active')
|
|
{
|
|
$theme = $this->active;
|
|
}
|
|
elseif ($type == 'fallback')
|
|
{
|
|
$theme = $this->fallback;
|
|
}
|
|
else
|
|
{
|
|
throw new \ThemeException('No location found to save the info file to.');
|
|
}
|
|
|
|
if ( ! $theme['path'])
|
|
{
|
|
throw new \ThemeException(sprintf('Could not find theme "%s".', $theme['name']));
|
|
}
|
|
|
|
if ( ! ($file = $this->find_file($this->config['info_file_name'], array($theme))))
|
|
{
|
|
throw new \ThemeException(sprintf('Theme "%s" is missing "%s".', $theme['name'], $this->config['info_file_name']));
|
|
}
|
|
|
|
return \Config::save($file, $theme['info']);
|
|
}
|
|
|
|
/**
|
|
* Enable or disable the use of modules. If enabled, every theme view loaded
|
|
* will be prefixed with the module name, so you don't have to hardcode the
|
|
* module name as a view file prefix
|
|
*
|
|
* @param bool|string $enable enable if true or string, disable if false
|
|
* @return Theme
|
|
*/
|
|
public function use_modules($enable = true)
|
|
{
|
|
$this->config['use_modules'] = $enable;
|
|
|
|
// return for chaining
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Find the absolute path to a file in a set of Themes. You can optionally
|
|
* send an array of themes to search. If you do not, it will search active
|
|
* then fallback (in that order).
|
|
*
|
|
* @param string $view name of the view to find
|
|
* @param array $themes optional array of themes to search
|
|
* @return string absolute path to the view
|
|
* @throws \ThemeException when not found
|
|
*/
|
|
protected function find_file($view, $themes = null)
|
|
{
|
|
if ($themes === null)
|
|
{
|
|
$themes = array($this->active, $this->fallback);
|
|
}
|
|
|
|
// determine the path prefix and optionally the module path
|
|
$path_prefix = '';
|
|
$module_path = null;
|
|
if ($this->config['use_modules'] and class_exists('Request', false) and $request = \Request::active() and $module = $request->module)
|
|
{
|
|
// we're using module name prefixing
|
|
$path_prefix = $module.DS;
|
|
|
|
// and modules are in a separate path
|
|
is_string($this->config['use_modules']) and $path_prefix = trim($this->config['use_modules'], '\\/').DS.$path_prefix;
|
|
|
|
// do we need to check the module too?
|
|
$this->config['use_modules'] === true and $module_path = \Module::exists($module).'themes'.DS;
|
|
}
|
|
|
|
foreach ($themes as $theme)
|
|
{
|
|
$ext = pathinfo($view, PATHINFO_EXTENSION)
|
|
? ('.'.pathinfo($view, PATHINFO_EXTENSION))
|
|
: $this->config['view_ext'];
|
|
|
|
$file = pathinfo($view, PATHINFO_DIRNAME)
|
|
? (str_replace(array('/', DS), DS, pathinfo($view, PATHINFO_DIRNAME)).DS)
|
|
: '';
|
|
$file .= pathinfo($view, PATHINFO_FILENAME);
|
|
|
|
if (empty($theme['find_file']))
|
|
{
|
|
if ($module_path and ! empty($theme['name']) and is_file($path = $module_path.$theme['name'].DS.$file.$ext))
|
|
{
|
|
return $path;
|
|
}
|
|
elseif (is_file($path = $theme['path'].$path_prefix.$file.$ext))
|
|
{
|
|
return $path;
|
|
}
|
|
elseif (is_file($path = $theme['path'].$file.$ext))
|
|
{
|
|
return $path;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ($path = \Finder::search($theme['path'].$path_prefix, $file, $ext))
|
|
{
|
|
return $path;
|
|
}
|
|
}
|
|
}
|
|
|
|
// not found, return the viewname to fall back to the standard View processing
|
|
return $view;
|
|
}
|
|
|
|
/**
|
|
* Sets a theme.
|
|
*
|
|
* @param string $theme Theme name to set active
|
|
* @param string $type name of the internal theme array to set
|
|
* @return array The theme array
|
|
* @throws \ThemeException
|
|
*/
|
|
protected function set_theme($theme = null, $type = 'active')
|
|
{
|
|
// set the theme if given
|
|
if ($theme !== null)
|
|
{
|
|
// remove the defined theme asset paths from the asset instance
|
|
empty($this->active['asset_path']) or $this->asset->remove_path($this->active['asset_path']);
|
|
empty($this->fallback['asset_path']) or $this->asset->remove_path($this->fallback['asset_path']);
|
|
|
|
$this->{$type} = $this->create_theme_array($theme);
|
|
|
|
// add the asset paths to the asset instance
|
|
empty($this->fallback['asset_path']) or $this->asset->add_path($this->fallback['asset_path']);
|
|
empty($this->active['asset_path']) or $this->asset->add_path($this->active['asset_path']);
|
|
}
|
|
|
|
// and return the theme config
|
|
return $this->{$type};
|
|
}
|
|
|
|
/**
|
|
* Creates a theme array by locating the given theme and setting all of the
|
|
* option. It will throw a \ThemeException if it cannot locate the theme.
|
|
*
|
|
* @param string $theme Theme name to set active
|
|
* @return array The theme array
|
|
* @throws \ThemeException
|
|
*/
|
|
protected function create_theme_array($theme)
|
|
{
|
|
if ( ! is_array($theme))
|
|
{
|
|
if ( ! $path = $this->find($theme))
|
|
{
|
|
throw new \ThemeException(sprintf('Theme "%s" could not be found.', $theme));
|
|
}
|
|
|
|
$theme = array(
|
|
'name' => $theme,
|
|
'path' => $path,
|
|
);
|
|
}
|
|
else
|
|
{
|
|
if ( ! isset($theme['name']) or ! isset($theme['path']))
|
|
{
|
|
throw new \ThemeException('Theme name and path must be given in array config.');
|
|
}
|
|
}
|
|
|
|
// load the theme info file
|
|
if ( ! isset($theme['info']))
|
|
{
|
|
$theme['info'] = $this->load_info($theme);
|
|
}
|
|
|
|
if ( ! isset($theme['asset_base']))
|
|
{
|
|
// determine the asset location and base URL
|
|
$assets_folder = rtrim($this->config['assets_folder'], DS).'/';
|
|
|
|
// all theme files are inside the docroot
|
|
if (strpos($path, DOCROOT) === 0 and is_dir($path.$assets_folder))
|
|
{
|
|
$theme['asset_path'] = $path.$assets_folder;
|
|
$theme['asset_base'] = str_replace(DOCROOT, '', $theme['asset_path']);
|
|
}
|
|
|
|
// theme views and templates are outside the docroot
|
|
else
|
|
{
|
|
$theme['asset_base'] = $assets_folder.$theme['name'].'/';
|
|
}
|
|
}
|
|
|
|
if ( ! isset($theme['asset_path']) and strpos($theme['asset_base'], '://') === false)
|
|
{
|
|
$theme['asset_path'] = DOCROOT.$theme['asset_base'];
|
|
}
|
|
|
|
// always uses forward slashes for the asset base and path
|
|
$theme['asset_base'] = str_replace(DS, '/', $theme['asset_base']);
|
|
$theme['asset_path'] = str_replace(DS, '/', $theme['asset_path']);
|
|
|
|
// but if on windows, file paths require a backslash
|
|
if (strpos($theme['asset_base'], '://') === false and DS !== '/')
|
|
{
|
|
$theme['asset_path'] = str_replace('/', DS, $theme['asset_path']);
|
|
}
|
|
|
|
return $theme;
|
|
}
|
|
}
|