<?php if (!defined('W3TC')) die(); ?>
<?php include W3TC_INC_DIR . '/options/common/header.php'; ?>

<?php function next_prime_event() { 
    $crons = _get_cron_array(); 
    foreach ($crons as $timestamp => $hooks) { 
        foreach ($hooks as $hook => $keys) { 
            if ($hook == 'w3_pgcache_prime') { 
                return $timestamp; 
            } 
        } 
    } 

    return null; 
} ?>
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    <tr>
     <th><label for="pgcache_prime_sitemap">Sitemap <acronym title="Uniform Resource Indicator">URL</acronym>:</label></th>
        <td>
          <input id="pgcache_prime_sitemap" type="text" name="pgcache.prime.sitemap" value="<?php echo $this->_config->get_string('pgcache.prime.sitemap'); ?>" size="100" /><br />
          <span class="description">A <a href="http://www.xml-sitemaps.com/validate-xml-sitemap.html" target="_blank">compliant</a> sitemap can be used to specify the pages to maintain in the primed cache. Pages will be cached according to the priorities specified in the <acronym title="Extensible Markup Language">XML</acronym> file. <a href="http://wordpress.org/extend/plugins/google-sitemap-generator/" target="_blank">Google <acronym title="Extensible Markup Language">XML</acronym> Sitemaps</a> is recommended for use with this feature.</span>
    	</td>
      </tr>
      <tr> 
         <th>Status:</th> 
          <td> 
            <span class="description">Next prime event <?php echo (next_prime_event()) ? date(DATE_RFC822,next_prime_event()) : 'is unknown'; ?> <br />Current time is <?php echo date(DATE_RFC822,time()); ?><br />View the recorded <a href="/w3tc_primetrace" target="_blank">Cache Prime Trace</a>.</span> 
         </td> 
      </tr>
    </table>

    <p class="submit">
      <?php echo $this->nonce_field('w3tc'); ?>
      <input type="submit" name="w3tc_save_options" class="w3tc-button-save button-primary" value="Save all settings" />
      <input type="submit" name="w3tc_prime_pgcache" value="Prime cache"<?php if (! $pgcache_enabled): ?> disabled="disabled"<?php endif; ?> class="button" /> <input type="submit" name="w3tc_prime_pgcache_stop" value="Stop prime"<?php if (! $pgcache_enabled): ?> disabled="disabled"<?php endif; ?> class="button" />      </p>
    <?php echo $this->postbox_footer(); ?>
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        $note_messages = array(
            'config_save' => 'Plugin configuration successfully updated.',
            'prime_pgcache' => 'Page cache prime is successfully scheduled.',
            'prime_pgcache_no' => 'Page cache prime is not scheduled.',
            'flush_all' => 'All caches successfully emptied.',
            'flush_memcached' => 'Memcached cache(s) successfully emptied.',
.
.
.
    /**
     * Latest widget control
     *
     * @param integer $widget_id
     * @param array $form_inputs
     * @return void
     */
    function widget_pagespeed_control($widget_id, $form_inputs = array()) {
        if ($_SERVER['REQUEST_METHOD'] == 'POST') {
            require_once W3TC_LIB_W3_DIR . '/Request.php';

            $this->_config->set('widget.pagespeed.key', W3_Request::get_string('w3tc_widget_pagespeed_key'));
            $this->_config->save();
        } else {
            include W3TC_INC_DIR . '/widget/pagespeed_control.php';
        }
    }

    /** 
     * Prime page cache action 
     * 
     * @return void 
     */ 
    function action_prime_pgcache() { 
        $this->prime_pgcache(); 
        if (wp_next_scheduled('w3_pgcache_prime')) { 
            $this->redirect(array( 'w3tc_note' => 'prime_pgcache' ), true); 
        } else { 
            $this->redirect(array( 'w3tc_note' => 'prime_pgcache_no' ), true); 
        } 
    } 

    /** 
     * Stop Prime page cache action 
     * 
     * @return void 
     */ 
    function action_prime_pgcache_stop() { 
        $this->prime_pgcache_stop(); 
        if (wp_next_scheduled('w3_pgcache_prime')) { 
            $this->redirect(array( 'w3tc_note' => 'prime_pgcache' ), true); 
        } else { 
            $this->redirect(array( 'w3tc_note' => 'prime_pgcache_no' ), true); 
        } 
    }
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            /**
             * Save blognames into file
             */
            if (w3_is_network() && !w3_is_subdomain_install()) {
                w3_save_blognames();
            }

            return true;
        }

        return false;
    }

    /** 
     * Prime page cache 
     * 
     * @return void 
     */ 
    function prime_pgcache() { 
        $w3_plugin_pgcache = & w3_instance('W3_Plugin_PgCacheAdmin'); 
        $w3_plugin_pgcache->schedule_prime(); 
    } 

    /** 
     * Stop Prime page cache 
     * 
     * @return void 
     */ 
    function prime_pgcache_stop() { 
        $crons = _get_cron_array(); 
        foreach ($crons as $timestamp => $hooks) { 
            foreach ($hooks as $hook => $keys) { 
                if ($hook == 'w3_pgcache_prime') { 
                    unset( $crons[$timestamp][$hook] ); 
                    if ( empty($crons[$timestamp]) ) { 
                        unset( $crons[$timestamp] ); 
                    } 
                } 
            } 
        } 
        _set_cron_array( $crons ); 
    }
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        /**
         * Do page cache logic
         */
        if ($this->_debug) {
            $this->_time_start = w3_microtime();
        }

	/** 
         * Is this cache prime trace output? 
         */ 
        if (strpos($this->_request_uri,'w3tc_primetrace') !== false) { 
            $cache = & $this->_get_cache(); 
            $prime_key = $this->_get_page_key('w3tc_primetrace'); 
            $tracedata = $cache->get($prime_key); 

            $this->_send_headers(false, time(), 0, false, array()); 

            if ($tracedata) { 
                echo "<h1>Cache Prime Trace</h1>" . nl2br($tracedata); 
            } else { 
                echo "<p>Cache prime trace information does not exist.</p>"; 
            } 
            exit();
        }
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