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<?php
/**
* Slim - a micro PHP 5 framework
*
* @author Josh Lockhart <info@slimframework.com>
* @copyright 2011 Josh Lockhart
* @link http://www.slimframework.com
* @license http://www.slimframework.com/license
* @version 2.0.0
* @package Slim
*
* MIT LICENSE
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
namespace Slim;
/**
* View
*
* The view is responsible for rendering a template. The view
* should subclass \Slim\View and implement this interface:
*
* public render(string $template);
*
* This method should render the specified template and return
* the resultant string.
*
* @package Slim
* @author Josh Lockhart
* @since 1.0.0
*/
class View
{
/**
* @var string Absolute or relative filesystem path to a specific template
*
* DEPRECATION WARNING!
* This variable will be removed in the near future
*/
protected $templatePath = '';
/**
* @var array Associative array of template variables
*/
protected $data = array();
/**
* @var string Absolute or relative path to the application's templates directory
*/
protected $templatesDirectory;
/**
* Constructor
*
* This is empty but may be implemented in a subclass
*/
public function __construct()
{
}
/**
* Get data
* @param string|null $key
* @return mixed If key is null, array of template data;
* If key exists, value of datum with key;
* If key does not exist, null;
*/
public function getData($key = null)
{
if (!is_null($key)) {
return isset($this->data[$key]) ? $this->data[$key] : null;
} else {
return $this->data;
}
}
/**
* Set data
*
* If two arguments:
* A single datum with key is assigned value;
*
* $view->setData('color', 'red');
*
* If one argument:
* Replace all data with provided array keys and values;
*
* $view->setData(array('color' => 'red', 'number' => 1));
*
* @param mixed
* @param mixed
* @throws InvalidArgumentException If incorrect method signature
*/
public function setData()
{
$args = func_get_args();
if (count($args) === 1 && is_array($args[0])) {
$this->data = $args[0];
} elseif (count($args) === 2) {
$this->data[(string) $args[0]] = $args[1];
} else {
throw new \InvalidArgumentException('Cannot set View data with provided arguments. Usage: `View::setData( $key, $value );` or `View::setData([ key => value, ... ]);`');
}
}
/**
* Append new data to existing template data
* @param array
* @throws InvalidArgumentException If not given an array argument
*/
public function appendData($data)
{
if (!is_array($data)) {
throw new \InvalidArgumentException('Cannot append view data. Expected array argument.');
}
$this->data = array_merge($this->data, $data);
}
/**
* Get templates directory
* @return string|null Path to templates directory without trailing slash;
* Returns null if templates directory not set;
*/
public function getTemplatesDirectory()
{
return $this->templatesDirectory;
}
/**
* Set templates directory
* @param string $dir
*/
public function setTemplatesDirectory($dir)
{
$this->templatesDirectory = rtrim($dir, '/');
}
/**
* Set template
* @param string $template
* @throws RuntimeException If template file does not exist
*
* DEPRECATION WARNING!
* This method will be removed in the near future.
*/
public function setTemplate($template)
{
$this->templatePath = $this->getTemplatesDirectory() . '/' . ltrim($template, '/');
if (!file_exists($this->templatePath)) {
throw new \RuntimeException('View cannot render template `' . $this->templatePath . '`. Template does not exist.');
}
}
/**
* Display template
*
* This method echoes the rendered template to the current output buffer
*
* @param string $template Pathname of template file relative to templates directoy
*/
public function display($template)
{
echo $this->fetch($template);
}
/**
* Fetch rendered template
*
* This method returns the rendered template
*
* @param string $template Pathname of template file relative to templates directory
* @return string
*/
public function fetch($template)
{
return $this->render($template);
}
/**
* Render template
*
* @param string $template Pathname of template file relative to templates directory
* @return string
*
* DEPRECATION WARNING!
* Use `\Slim\View::fetch` to return a rendered template instead of `\Slim\View::render`.
*/
public function render($template)
{
$this->setTemplate($template);
extract($this->data);
ob_start();
require $this->templatePath;
return ob_get_clean();
}
}