<?php namespace CodeIgniter\View;

/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2016, British Columbia Institute of Technology
 *
 * 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.
 *
 * @package	CodeIgniter
 * @author	CodeIgniter Dev Team
 * @copyright	Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/)
 * @license	http://opensource.org/licenses/MIT	MIT License
 * @link	http://codeigniter.com
 * @since	Version 3.0.0
 * @filesource
 */

/**
 * Interface RendererInterface
 *
 * The interface used for displaying Views and/or theme files.
 *
 * @package CodeIgniter\View
 */
interface RendererInterface {

	/**
	 * Builds the output based upon a file name and any
	 * data that has already been set.
	 *
	 * @param string $view
	 * @param array  $options  Reserved for 3rd-party uses since
	 *                         it might be needed to pass additional info
	 *                         to other template engines.
	 * @param bool   $saveData If true, will save data for use with any other calls,
	 *                         if false, will clean the data after displaying the view.
	 *
	 * @return string
	 */
	public function render(string $view, array $options=null, $saveData=false): string;

	//--------------------------------------------------------------------

	/**
	 * Builds the output based upon a string and any
	 * data that has already been set.
	 *
	 * @param string $view	The view contents
	 * @param array  $options  Reserved for 3rd-party uses since
	 *                         it might be needed to pass additional info
	 *                         to other template engines.
	 * @param bool   $saveData If true, will save data for use with any other calls,
	 *                         if false, will clean the data after displaying the view.
	 *
	 * @return string
	 */
	public function renderString(string $view, array $options=null, bool $saveData=false): string;

	//--------------------------------------------------------------------

	/**
	 * Sets several pieces of view data at once.
	 *
	 * @param array $data
	 * @param string $context The context to escape it for: html, css, js, url
	 *                        If 'raw', no escaping will happen
	 *
	 * @return RendererInterface
	 */
	public function setData(array $data=[], string $context=null);

	//--------------------------------------------------------------------

	/**
	 * Sets a single piece of view data.
	 *
	 * @param string $name
	 * @param mixed   $value
	 * @param string $context The context to escape it for: html, css, js, url
	 *                        If 'raw' no escaping will happen
	 *
	 * @return RendererInterface
	 */
	public function setVar(string $name, $value=null, string $context=null);

	//--------------------------------------------------------------------

	/**
	 * Removes all of the view data from the system.
	 *
	 * @return RendererInterface
	 */
	public function resetData();

	//--------------------------------------------------------------------

}
