<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Used to render the footer of PMA's pages
 *
 * @package PhpMyAdmin
 */
if (! defined('PHPMYADMIN')) {
    exit;
}

require_once 'libraries/Scripts.class.php';

/**
 * Class used to output the footer
 *
 * @package PhpMyAdmin
 */
class PMA_Footer
{
    /**
     * PMA_Scripts instance
     *
     * @access private
     * @var object
     */
    private $_scripts;
    /**
     * Whether we are servicing an ajax request.
     * We can't simply use $GLOBALS['is_ajax_request']
     * here since it may have not been initialised yet.
     *
     * @access private
     * @var bool
     */
    private $_isAjax;
    /**
     * Whether to only close the BODY and HTML tags
     * or also include scripts, errors and links
     *
     * @access private
     * @var bool
     */
    private $_isMinimal;
    /**
     * Whether to display anything
     *
     * @access private
     * @var bool
     */
    private $_isEnabled;

    /**
     * Creates a new class instance
     *
     * @return new PMA_Footer object
     */
    public function __construct()
    {
        $this->_isEnabled = true;
        $this->_scripts   = new PMA_Scripts();
        $this->_isMinimal = false;
        $this->_addDefaultScripts();
    }

    /**
     * Loads common scripts
     *
     * @return void
     */
    private function _addDefaultScripts()
    {
        if (empty($GLOBALS['error_message'])) {
            $this->_scripts->addCode("
                $(function() {
                // updates current settings
                if (window.parent.setAll) {
                    window.parent.setAll(
                        '" . PMA_escapeJsString($GLOBALS['lang']) . "',
                        '" . PMA_escapeJsString($GLOBALS['collation_connection']) . "',
                        '" . PMA_escapeJsString($GLOBALS['server']) . "',
                        '" . PMA_escapeJsString(PMA_ifSetOr($GLOBALS['db'], '')) . "',
                        '" . PMA_escapeJsString(PMA_ifSetOr($GLOBALS['table'], '')) . "',
                        '" . PMA_escapeJsString($_SESSION[' PMA_token ']) . "'
                    );
                }
                });
            ");
            if (! empty($GLOBALS['reload'])) {
                $this->_scripts->addCode("
                    // refresh navigation frame content
                    if (window.parent.refreshNavigation) {
                        window.parent.refreshNavigation();
                    }
                ");
            } else if (isset($_GET['reload_left_frame'])
                && $_GET['reload_left_frame'] == '1'
            ) {
                // reload left frame (used by user preferences)
                $this->_scripts->addCode("
                    if (window.parent && window.parent.frame_navigation) {
                        window.parent.frame_navigation.location.reload();
                    }
                ");
            }

            // set current db, table and sql query in the querywindow
            $query = '';
            if (isset($GLOBALS['sql_query']) && strlen($GLOBALS['sql_query']) > $GLOBALS['cfg']['MaxCharactersInDisplayedSQL']) {
                $query = PMA_escapeJsString($GLOBALS['sql_query']);
            }
            $this->_scripts->addCode("
                if (window.parent.reload_querywindow) {
                    window.parent.reload_querywindow(
                        '" . PMA_escapeJsString(PMA_ifSetOr($GLOBALS['db'], '')) . "',
                        '" . PMA_escapeJsString(PMA_ifSetOr($GLOBALS['table'], '')) . "',
                        '" . $query . "'
                    );
                }
            ");

            if (! empty($GLOBALS['focus_querywindow'])) {
                // set focus to the querywindow
                $this->_scripts->addCode("
                    if (parent.querywindow && !parent.querywindow.closed
                        && parent.querywindow.location
                    ) {
                        self.focus();
                    }
                ");
            }
            $this->_scripts->addCode("
                if (window.parent.frame_content) {
                    // reset content frame name, as querywindow needs
                    // to set a unique name before submitting form data,
                    // and navigation frame needs the original name
                    if (typeof(window.parent.frame_content.name) != 'undefined'
                     && window.parent.frame_content.name != 'frame_content') {
                        window.parent.frame_content.name = 'frame_content';
                    }
                    if (typeof(window.parent.frame_content.id) != 'undefined'
                     && window.parent.frame_content.id != 'frame_content') {
                        window.parent.frame_content.id = 'frame_content';
                    }
                    //window.parent.frame_content.setAttribute('name', 'frame_content');
                    //window.parent.frame_content.setAttribute('id', 'frame_content');
                }
            ");
        }
    }

    /**
     * Renders the debug messages
     *
     * @return string
     */
    private function _getDebugMessage()
    {
        $retval = '';
        if (! empty($_SESSION['debug'])) {
            $sum_time = 0;
            $sum_exec = 0;
            foreach ($_SESSION['debug']['queries'] as $query) {
                $sum_time += $query['count'] * $query['time'];
                $sum_exec += $query['count'];
            }

            $retval .= '<div>';
            $retval .= count($_SESSION['debug']['queries']) . ' queries executed ';
            $retval .= $sum_exec . ' times in ' . $sum_time . ' seconds';
            $retval .= '<pre>';

            ob_start();
            print_r($_SESSION['debug']);
            $retval .= ob_get_contents();
            ob_end_clean();

            $retval .= '</pre>';
            $retval .= '</div>';
            $_SESSION['debug'] = array();
        }
        return $retval;
    }

    /**
     * Renders the link to open a new page
     *
     * @param string $url_params URL paramater string
     *
     * @return string
     */
    private function _getSelfLink($url_params)
    {
        $retval  = '';
        $retval .= '<div id="selflink" class="print_ignore">';
        $retval .= '<a href="index.php' . PMA_generate_common_url($url_params) . '"'
            . ' title="' . __('Open new phpMyAdmin window') . '" target="_blank">';
        if ($GLOBALS['cfg']['NavigationBarIconic']) {
            $retval .= PMA_CommonFunctions::getInstance()->getImage(
                'window-new.png',
                __('Open new phpMyAdmin window')
            );
        } else {
            $retval .=  __('Open new phpMyAdmin window');
        }
        $retval .= '</a>';
        $retval .= '</div>';
        return $retval;
    }

    /**
     * Renders the link to open a new page
     *
     * @return string
     */
    private function _getErrorMessages()
    {
        $retval = '';
        if ($GLOBALS['error_handler']->hasDisplayErrors()) {
            $retval .= '<div class="clearfloat">';
            $retval .= $GLOBALS['error_handler']->getDispErrors();
            $retval .= '</div>';
        }
        return $retval;
    }

    /**
     * Saves query in history
     *
     * @return void
     */
    private function _setHistory()
    {
        if (! PMA_isValid($_REQUEST['no_history'])
            && empty($GLOBALS['error_message'])
            && ! empty($GLOBALS['sql_query'])
        ) {
            PMA_setHistory(
                PMA_ifSetOr($GLOBALS['db'], ''),
                PMA_ifSetOr($GLOBALS['table'], ''),
                $GLOBALS['cfg']['Server']['user'],
                $GLOBALS['sql_query']
            );
        }
    }

    /**
     * Disables the rendering of the footer
     *
     * @return void
     */
    public function disable()
    {
        $this->_isEnabled = false;
    }

    /**
     * Set the ajax flag to indicate whether
     * we are sevicing an ajax request
     *
     * @param bool $isAjax Whether we are sevicing an ajax request
     *
     * @return void
     */
    public function setAjax($isAjax)
    {
        $this->_isAjax = ($isAjax == true);
    }

    /**
     * Turn on minimal display mode
     *
     * @return void
     */
    public function setMinimal()
    {
        $this->_isMinimal = true;
    }

    /**
     * Returns the PMA_Scripts object
     *
     * @return PMA_Scripts object
     */
    public function getScripts()
    {
        return $this->_scripts;
    }

    /**
     * Renders the footer
     *
     * @return string
     */
    public function getDisplay()
    {
        $retval = '';
        $this->_setHistory();
        if ($this->_isEnabled) {
            if (! $this->_isAjax && ! $this->_isMinimal) {
                // Link to itself to replicate windows including frameset
                if (! isset($GLOBALS['checked_special'])) {
                    $GLOBALS['checked_special'] = false;
                }
                if (PMA_getenv('SCRIPT_NAME')
                    && empty($_POST)
                    && ! $GLOBALS['checked_special']
                    && ! $this->_isAjax
                ) {
                    $url_params['target'] = basename(PMA_getenv('SCRIPT_NAME'));
                    $url = PMA_generate_common_url($url_params, 'text', '');
                    $this->_scripts->addCode("
                        // Store current location in hash part
                        // of URL to allow direct bookmarking
                        setURLHash('$url');
                    ");
                    $retval .= $this->_getSelfLink($url_params);
                }
                $retval .= $this->_getDebugMessage();
                $retval .= $this->_getErrorMessages();
                $retval .= $this->_scripts->getDisplay();
                // Include possible custom footers
                if (file_exists(CUSTOM_FOOTER_FILE)) {
                    ob_start();
                    include CUSTOM_FOOTER_FILE;
                    $retval .= ob_get_contents();
                    ob_end_clean();
                }
            }
            if (! $this->_isAjax) {
                $retval .= "</body></html>";
            }
        }

        return $retval;
    }
}