# Selima Website Content Management System
# ListFunc.pm: The subroutines for the lists.

#  Copyright (c) 2006-2018 imacat.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

# Author: imacat <imacat@mail.imacat.idv.tw>
# First written: 2006-11-17

package Selima::ListFunc;
use 5.008;
use strict;
use warnings;
use base qw(Exporter);
use vars qw(@EXPORT @EXPORT_OK);
BEGIN {
@EXPORT = qw(list_type);
@EXPORT_OK = @EXPORT;
# Prototype declaration
sub list_type(;$);
}

use Selima::Cache qw(:listfunc);
use Selima::FormFunc;

# list_type: Return the list name
sub list_type(;$) {
    local ($_, %_);
    my $type;
    $type = $_[0];
    
    # Set the form type
    return ($ListFunc_listtype = $type) if defined $type;
    
    # Return the cache
    return $ListFunc_listtype if defined $ListFunc_listtype;
    
    # Obtain the current form
    $_ = curform;
    # Form type specified in arguments
    return ($ListFunc_listtype = $_->param("list"))
        if defined $_->param("list");
    # No form source is found
    return ($ListFunc_listtype = -1);
}

return 1;