Na}{

File Content: `History.php`

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\BrowserKit;

/**
 * History.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class History
{
    protected $stack = array();
    protected $position = -1;

    /**
     * Clears the history.
     */
    public function clear()
    {
        $this->stack = array();
        $this->position = -1;
    }

    /**
     * Adds a Request to the history.
     *
     * @param Request $request A Request instance
     */
    public function add(Request $request)
    {
        $this->stack = array_slice($this->stack, 0, $this->position + 1);
        $this->stack[] = clone $request;
        $this->position = count($this->stack) - 1;
    }

    /**
     * Returns true if the history is empty.
     *
     * @return Boolean true if the history is empty, false otherwise
     */
    public function isEmpty()
    {
        return count($this->stack) == 0;
    }

    /**
     * Goes back in the history.
     *
     * @return Request A Request instance
     *
     * @throws \LogicException if the stack is already on the first page
     */
    public function back()
    {
        if ($this->position < 1) {
            throw new \LogicException('You are already on the first page.');
        }

        return clone $this->stack[--$this->position];
    }

    /**
     * Goes forward in the history.
     *
     * @return Request A Request instance
     *
     * @throws \LogicException if the stack is already on the last page
     */
    public function forward()
    {
        if ($this->position > count($this->stack) - 2) {
            throw new \LogicException('You are already on the last page.');
        }

        return clone $this->stack[++$this->position];
    }

    /**
     * Returns the current element in the history.
     *
     * @return Request A Request instance
     *
     * @throws \LogicException if the stack is empty
     */
    public function current()
    {
        if (-1 == $this->position) {
            throw new \LogicException('The page history is empty.');
        }

        return clone $this->stack[$this->position];
    }
}

Name	Size	Permission
Client.php	17180 bytes	0644
Cookie.php	8723 bytes	0644
CookieJar.php	7581 bytes	0644
History.php	2334 bytes	0644
Request.php	2803 bytes	0644
Response.php	3373 bytes	0644
autoloader.php	340 bytes	0644

File Content: History.php

File Content: `History.php`