private $cache_exact_date = array();
    private $cache_time_limit = array();
    public function get_view_args_for_view( Ai1ec_Abstract_Query $request ) {
        global $ai1ec_events_helper, $ai1ec_settings;
        // Define arguments for specific calendar sub-view (month, agenda,
        // posterboard, etc.)
        // Preprocess action.
        // Allow action w/ or w/o ai1ec_ prefix. Remove ai1ec_ if provided.
        $action = $request->get( 'action' );

        if ( 0 === strncmp( $action, 'ai1ec_', 6 ) ) {
            $action = substr( $action, 6 );
        }
        $view_args = $request->get_dict( array(
            'post_ids',
            'cat_ids',
            'tag_ids',
        ) );
        $add_defaults = array(
            'cat_ids' => 'default_categories',
            'tag_ids' => 'default_tags',
        );
        foreach ( $add_defaults as $query => $default ) {
            if ( empty( $view_args[$query] ) ) {
                $view_args[$query] = $ai1ec_settings->{$default};
            }
        }

        $type = $request->get( 'request_type' );

        $view_args['data_type'] = $this->return_data_type_for_request_type( $type );


        $exact_date = $request->get( 'exact_date' );
        if( false !== $exact_date ) {
            if( ! isset( $this->cache_exact_date[$exact_date] ) ) {
                $this->cache_exact_date[$exact_date] = $this->get_exact_date( $request );
            }
            $exact_date = $this->cache_exact_date[$exact_date];
        }
        $view_args['no_navigation'] = $request->get( 'no_navigation' ) === 'true' ? true : false;

        // Find out which view of the calendar page was requested, and render it
        // accordingly.
        $view_args['action'] = $action;
        switch( $action ) {
            case 'posterboard':
            case 'stream':
            case 'agenda':
                $view_args += $request->get_dict( array(
                'page_offset',
                'time_limit',
                ) );
                if( false !== $exact_date ) {
                    if( ! isset( $this->cache_time_limit[$exact_date] ) ) {
                        $this->cache_time_limit[$exact_date] = $ai1ec_events_helper->local_to_gmt( $exact_date ) - 1;
                    }
                    $view_args['time_limit'] = $this->cache_time_limit[$exact_date];
                }

                break;

            case 'month':
            case 'oneday':
            case 'week':
                $view_args["{$action}_offset"] = $request->get( "{$action}_offset" );
                if( false !== $exact_date ) {
                    $view_args['exact_date'] = $exact_date;
                }
                break;
        }
        $view_args['request'] = $request;
        return $view_args;
    }