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Koha/C4/Output.pm
Joe Atzberger 70c6a9fdf3 Bug 3239 - Content-Script-Type and Content-Style-Type 
This adds headers to define the default script and style languages.
Please note that this output isn't 100% canonical from CGI yet, but
that is due to a bug in CGI:
  http://bugs.koha.org/cgi-bin/bugzilla3/show_bug.cgi?id=3243

So either CGI will perfect it's output, or we can switch to using
HTTP::Headers.  The latter may be desirable anyway, since then we
would not need a CGI $query argument at all.

Signed-off-by: Galen Charlton <galen.charlton@liblime.com>
2009-05-22 08:05:48 -05:00

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package C4::Output;
#package to deal with marking up output
#You will need to edit parts of this pm
#set the value of path to be where your html lives
# Copyright 2000-2002 Katipo Communications
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
# NOTE: I'm pretty sure this module is deprecated in favor of
# templates.
use strict;
use C4::Context;
use C4::Languages qw(getTranslatedLanguages get_bidi regex_lang_subtags language_get_description accept_language );
use HTML::Template::Pro;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
BEGIN {
# set the version for version checking
$VERSION = 3.03;
require Exporter;
@ISA = qw(Exporter);
@EXPORT_OK = qw(&is_ajax ajax_fail); # More stuff should go here instead
%EXPORT_TAGS = ( all =>[qw(&themelanguage &gettemplate setlanguagecookie pagination_bar
&output_with_http_headers &output_html_with_http_headers)],
ajax =>[qw(&output_with_http_headers is_ajax)],
html =>[qw(&output_with_http_headers &output_html_with_http_headers)]
);
push @EXPORT, qw(
&themelanguage &gettemplate setlanguagecookie pagination_bar
);
push @EXPORT, qw(
&output_html_with_http_headers &output_with_http_headers
);
}
=head1 NAME
C4::Output - Functions for managing templates
=head1 FUNCTIONS
=over 2
=cut
#FIXME: this is a quick fix to stop rc1 installing broken
#Still trying to figure out the correct fix.
my $path = C4::Context->config('intrahtdocs') . "/prog/en/includes/";
#---------------------------------------------------------------------------------------------------------
# FIXME - POD
sub gettemplate {
my ( $tmplbase, $interface, $query ) = @_;
($query) or warn "no query in gettemplate";
my $htdocs;
if ( $interface ne "intranet" ) {
$htdocs = C4::Context->config('opachtdocs');
}
else {
$htdocs = C4::Context->config('intrahtdocs');
}
my $path = C4::Context->preference('intranet_includes') || 'includes';
my ( $theme, $lang ) = themelanguage( $htdocs, $tmplbase, $interface, $query );
my $opacstylesheet = C4::Context->preference('opacstylesheet');
# if the template doesn't exist, load the English one as a last resort
my $filename = "$htdocs/$theme/$lang/modules/$tmplbase";
unless (-f $filename) {
$lang = 'en';
$filename = "$htdocs/$theme/$lang/modules/$tmplbase";
}
my $template = HTML::Template::Pro->new(
filename => $filename,
die_on_bad_params => 1,
global_vars => 1,
case_sensitive => 1,
loop_context_vars => 1, # enable: __first__, __last__, __inner__, __odd__, __counter__
path => ["$htdocs/$theme/$lang/$path"]
);
my $themelang=( $interface ne 'intranet' ? '/opac-tmpl' : '/intranet-tmpl' )
. "/$theme/$lang";
$template->param(
themelang => $themelang,
yuipath => (C4::Context->preference("yuipath") eq "local"?"$themelang/lib/yui":C4::Context->preference("yuipath")),
interface => ( $interface ne 'intranet' ? '/opac-tmpl' : '/intranet-tmpl' ),
theme => $theme,
opacstylesheet => $opacstylesheet,
opaccolorstylesheet => C4::Context->preference('opaccolorstylesheet'),
opacsmallimage => C4::Context->preference('opacsmallimage'),
lang => $lang
);
# Bidirectionality
my $current_lang = regex_lang_subtags($lang);
my $bidi;
$bidi = get_bidi($current_lang->{script}) if $current_lang->{script};
# Languages
my $languages_loop = getTranslatedLanguages($interface,$theme,$lang);
my $num_languages_enabled = 0;
foreach my $lang (@$languages_loop) {
foreach my $sublang (@{ $lang->{'sublanguages_loop'} }) {
$num_languages_enabled++ if $sublang->{enabled};
}
}
$template->param(
languages_loop => $languages_loop,
bidi => $bidi,
one_language_enabled => ($num_languages_enabled <= 1) ? 1 : 0, # deal with zero enabled langs as well
) unless @$languages_loop<2;
return $template;
}
#---------------------------------------------------------------------------------------------------------
# FIXME - POD
sub themelanguage {
my ( $htdocs, $tmpl, $interface, $query ) = @_;
($query) or warn "no query in themelanguage";
# Set some defaults for language and theme
# First, check the user's preferences
my $lang;
my $http_accept_language = $ENV{ HTTP_ACCEPT_LANGUAGE };
$lang = accept_language( $http_accept_language,
getTranslatedLanguages($interface,'prog') )
if $http_accept_language;
# But, if there's a cookie set, obey it
$lang = $query->cookie('KohaOpacLanguage') if $query->cookie('KohaOpacLanguage');
# Fall back to English
my @languages;
if ($interface eq 'intranet') {
@languages = split ",", C4::Context->preference("language");
} else {
@languages = split ",", C4::Context->preference("opaclanguages");
}
if ($lang){
@languages=($lang,@languages);
} else {
$lang = $languages[0];
}
my $theme = 'prog'; # in the event of theme failure default to 'prog' -fbcit
my $dbh = C4::Context->dbh;
my @themes;
if ( $interface eq "intranet" ) {
@themes = split " ", C4::Context->preference("template");
}
else {
# we are in the opac here, what im trying to do is let the individual user
# set the theme they want to use.
# and perhaps the them as well.
#my $lang = $query->cookie('KohaOpacLanguage');
@themes = split " ", C4::Context->preference("opacthemes");
}
# searches through the themes and languages. First template it find it returns.
# Priority is for getting the theme right.
THEME:
foreach my $th (@themes) {
foreach my $la (@languages) {
#for ( my $pass = 1 ; $pass <= 2 ; $pass += 1 ) {
# warn "$htdocs/$th/$la/modules/$interface-"."tmpl";
#$la =~ s/([-_])/ $1 eq '-'? '_': '-' /eg if $pass == 2;
if ( -e "$htdocs/$th/$la/modules/$tmpl") {
#".($interface eq 'intranet'?"modules":"")."/$tmpl" ) {
$theme = $th;
$lang = $la;
last THEME;
}
last unless $la =~ /[-_]/;
#}
}
}
return ( $theme, $lang );
}
sub setlanguagecookie {
my ( $query, $language, $uri ) = @_;
my $cookie = $query->cookie(
-name => 'KohaOpacLanguage',
-value => $language,
-expires => ''
);
print $query->redirect(
-uri => $uri,
-cookie => $cookie
);
}
=item pagination_bar
pagination_bar($base_url, $nb_pages, $current_page, $startfrom_name)
Build an HTML pagination bar based on the number of page to display, the
current page and the url to give to each page link.
C<$base_url> is the URL for each page link. The
C<$startfrom_name>=page_number is added at the end of the each URL.
C<$nb_pages> is the total number of pages available.
C<$current_page> is the current page number. This page number won't become a
link.
This function returns HTML, without any language dependency.
=cut
sub pagination_bar {
my $base_url = (@_ ? shift : $ENV{SCRIPT_NAME} . $ENV{QUERY_STRING}) or return undef;
my $nb_pages = (@_) ? shift : 1;
my $current_page = (@_) ? shift : undef; # delay default until later
my $startfrom_name = (@_) ? shift : 'page';
# how many pages to show before and after the current page?
my $pages_around = 2;
my $delim = qr/\&(?:amp;)?|;/; # "non memory" cluster: no backreference
$base_url =~ s/$delim*\b$startfrom_name=(\d+)//g; # remove previous pagination var
unless (defined $current_page and $current_page > 0 and $current_page <= $nb_pages) {
$current_page = ($1) ? $1 : 1; # pull current page from param in URL, else default to 1
# $debug and # FIXME: use C4::Debug;
# warn "with QUERY_STRING:" .$ENV{QUERY_STRING}. "\ncurrent_page:$current_page\n1:$1 2:$2 3:$3";
}
$base_url =~ s/($delim)+/$1/g; # compress duplicate delims
$base_url =~ s/$delim;//g; # remove empties
$base_url =~ s/$delim$//; # remove trailing delim
my $url = $base_url . (($base_url =~ m/$delim/ or $base_url =~ m/\?/) ? '&amp;' : '?' ) . $startfrom_name . '=';
my $pagination_bar = '';
# navigation bar useful only if more than one page to display !
if ( $nb_pages > 1 ) {
# link to first page?
if ( $current_page > 1 ) {
$pagination_bar .=
"\n" . '&nbsp;'
. '<a href="'
. $url
. '1" rel="start">'
. '&lt;&lt;' . '</a>';
}
else {
$pagination_bar .=
"\n" . '&nbsp;<span class="inactive">&lt;&lt;</span>';
}
# link on previous page ?
if ( $current_page > 1 ) {
my $previous = $current_page - 1;
$pagination_bar .=
"\n" . '&nbsp;'
. '<a href="'
. $url
. $previous
. '" rel="prev">' . '&lt;' . '</a>';
}
else {
$pagination_bar .=
"\n" . '&nbsp;<span class="inactive">&lt;</span>';
}
my $min_to_display = $current_page - $pages_around;
my $max_to_display = $current_page + $pages_around;
my $last_displayed_page = undef;
for my $page_number ( 1 .. $nb_pages ) {
if (
$page_number == 1
or $page_number == $nb_pages
or ( $page_number >= $min_to_display
and $page_number <= $max_to_display )
)
{
if ( defined $last_displayed_page
and $last_displayed_page != $page_number - 1 )
{
$pagination_bar .=
"\n" . '&nbsp;<span class="inactive">...</span>';
}
if ( $page_number == $current_page ) {
$pagination_bar .=
"\n" . '&nbsp;'
. '<span class="currentPage">'
. $page_number
. '</span>';
}
else {
$pagination_bar .=
"\n" . '&nbsp;'
. '<a href="'
. $url
. $page_number . '">'
. $page_number . '</a>';
}
$last_displayed_page = $page_number;
}
}
# link on next page?
if ( $current_page < $nb_pages ) {
my $next = $current_page + 1;
$pagination_bar .= "\n"
. '&nbsp;<a href="'
. $url
. $next
. '" rel="next">' . '&gt;' . '</a>';
}
else {
$pagination_bar .=
"\n" . '&nbsp;<span class="inactive">&gt;</span>';
}
# link to last page?
if ( $current_page != $nb_pages ) {
$pagination_bar .= "\n"
. '&nbsp;<a href="'
. $url
. $nb_pages
. '" rel="last">'
. '&gt;&gt;' . '</a>';
}
else {
$pagination_bar .=
"\n" . '&nbsp;<span class="inactive">&gt;&gt;</span>';
}
}
return $pagination_bar;
}
=item output_with_http_headers
&output_with_http_headers($query, $cookie, $data, $content_type[, $status])
Outputs $data with the appropriate HTTP headers,
the authentication cookie $cookie and a Content-Type specified in
$content_type.
If applicable, $cookie can be undef, and it will not be sent.
$content_type is one of the following: 'html', 'js', 'json', 'xml', 'rss', or 'atom'.
$status is an HTTP status message, like '403 Authentication Required'. It defaults to '200 OK'.
=cut
sub output_with_http_headers($$$$;$) {
my ( $query, $cookie, $data, $content_type, $status ) = @_;
$status ||= '200 OK';
my %content_type_map = (
'html' => 'text/html',
'js' => 'text/javascript',
'json' => 'application/json',
'xml' => 'text/xml',
# NOTE: not using application/atom+xml or application/rss+xml because of
# Internet Explorer 6; see bug 2078.
'rss' => 'text/xml',
'atom' => 'text/xml'
);
die "Unknown content type '$content_type'" if ( !defined( $content_type_map{$content_type} ) );
my $options = {
type => $content_type_map{$content_type},
status => $status,
charset => 'UTF-8',
Pragma => 'no-cache',
'Cache-Control' => 'no-cache',
};
$options->{cookie} = $cookie if $cookie;
if ($content_type eq 'html') { # guaranteed to be one of the content_type_map keys, else we'd have died
$options->{'Content-Style-Type' } = 'text/css';
$options->{'Content-Script-Type'} = 'text/javascript';
}
print $query->header($options), $data;
}
sub output_html_with_http_headers ($$$) {
my ( $query, $cookie, $data ) = @_;
output_with_http_headers( $query, $cookie, $data, 'html' );
}
sub is_ajax () {
my $x_req = $ENV{HTTP_X_REQUESTED_WITH};
return ( $x_req and $x_req =~ /XMLHttpRequest/i ) ? 1 : 0;
}
END { } # module clean-up code here (global destructor)
1;
__END__
=back
=head1 AUTHOR
Koha Developement team <info@koha.org>
=cut
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