* @since 2.0
 */
class LogPanel extends Panel
{
	public function getName()
	{
		return 'Logs';
	}
	public function getSummary()
	{
		$output = array('' . count($this->data['messages']) . '');
		$title = 'Logged ' . count($this->data['messages']) . ' messages';
		$errorCount = count(Target::filterMessages($this->data['messages'], Logger::LEVEL_ERROR));
		if ($errorCount) {
			$output[] = '' . $errorCount . '';
			$title .= ", $errorCount errors";
		}
		$warningCount = count(Target::filterMessages($this->data['messages'], Logger::LEVEL_WARNING));
		if ($warningCount) {
			$output[] = '' . $warningCount . '';
			$title .= ", $warningCount warnings";
		}
		$log = implode(' ', $output);
		$url = $this->getUrl();
		return <<
	Log $log
EOD;
	}
	public function getDetail()
	{
		$rows = array();
		foreach ($this->data['messages'] as $log) {
			list ($message, $level, $category, $time, $traces) = $log;
			$time = date('H:i:s.', $time) . sprintf('%03d', (int)(($time - (int)$time) * 1000));
			$message = nl2br(Html::encode($message));
			if (!empty($traces)) {
				$message .= Html::ul($traces, array(
					'class' => 'trace',
					'item' => function ($trace) {
						return "{$trace['file']}({$trace['line']})";
					},
				));
			}
			if ($level == Logger::LEVEL_ERROR) {
				$class = ' class="danger"';
			} elseif ($level == Logger::LEVEL_WARNING) {
				$class = ' class="warning"';
			} elseif ($level == Logger::LEVEL_INFO) {
				$class = ' class="success"';
			} else {
				$class = '';
			}
			$level = Logger::getLevelName($level);
			$rows[] = "| $time | $level | $category | $message | 
";
		}
		$rows = implode("\n", $rows);
		return <<Log Messages
	| Time | Level | Category | Message | 
$rows
EOD;
	}
	public function save()
	{
		$target = $this->module->logTarget;
		$messages = $target->filterMessages($target->messages, Logger::LEVEL_ERROR | Logger::LEVEL_INFO | Logger::LEVEL_WARNING | Logger::LEVEL_TRACE);
		return array(
			'messages' => $messages,
		);
	}
}