C4/Output.pm

   1 package C4::Output;
   2
   3 #package to deal with marking up output
   4 #You will need to edit parts of this pm
   5 #set the value of path to be where your html lives
   6
   7 # Copyright 2000-2002 Katipo Communications
   8 #
   9 # This file is part of Koha.
  10 #
  11 # Koha is free software; you can redistribute it and/or modify it under the
  12 # terms of the GNU General Public License as published by the Free Software
  13 # Foundation; either version 2 of the License, or (at your option) any later
  14 # version.
  15 #
  16 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  17 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  18 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License along with
  21 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  22 # Suite 330, Boston, MA  02111-1307 USA
  23
  24
  25 # NOTE: I'm pretty sure this module is deprecated in favor of
  26 # templates.
  27
  28 use strict;
  29
  30 use C4::Context;
  31 use C4::Languages qw(getTranslatedLanguages get_bidi regex_lang_subtags language_get_description accept_language );
  32
  33 use HTML::Template::Pro;
  34 use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
  35
  36 BEGIN {
  37     # set the version for version checking
  38     $VERSION = 3.03;
  39     require Exporter;
  40     @ISA    = qw(Exporter);
  41         @EXPORT_OK = qw(&output_ajax_with_http_headers &is_ajax); # More stuff should go here instead
  42         %EXPORT_TAGS = ( all =>[qw(&themelanguage &gettemplate setlanguagecookie pagination_bar
  43                                                                 &output_ajax_with_http_headers &output_html_with_http_headers)],
  44                                         ajax =>[qw(&output_ajax_with_http_headers is_ajax)],
  45                                         html =>[qw(&output_html_with_http_headers)]
  46                                 );
  47     push @EXPORT, qw(
  48         &themelanguage &gettemplate setlanguagecookie pagination_bar
  49     );
  50     push @EXPORT, qw(
  51         &output_html_with_http_headers
  52     );
  53 }
  54
  55 =head1 NAME
  56
  57 C4::Output - Functions for managing templates
  58
  59 =head1 FUNCTIONS
  60
  61 =over 2
  62
  63 =cut
  64
  65 #FIXME: this is a quick fix to stop rc1 installing broken
  66 #Still trying to figure out the correct fix.
  67 my $path = C4::Context->config('intrahtdocs') . "/prog/en/includes/";
  68
  69 #---------------------------------------------------------------------------------------------------------
  70 # FIXME - POD
  71 sub gettemplate {
  72     my ( $tmplbase, $interface, $query ) = @_;
  73     ($query) or warn "no query in gettemplate";
  74     my $htdocs;
  75     if ( $interface ne "intranet" ) {
  76         $htdocs = C4::Context->config('opachtdocs');
  77     }
  78     else {
  79         $htdocs = C4::Context->config('intrahtdocs');
  80     }
  81     my $path = C4::Context->preference('intranet_includes') || 'includes';
  82     my ( $theme, $lang ) = themelanguage( $htdocs, $tmplbase, $interface, $query );
  83     my $opacstylesheet = C4::Context->preference('opacstylesheet');
  84
  85     # if the template doesn't exist, load the English one as a last resort
  86     my $filename = "$htdocs/$theme/$lang/modules/$tmplbase";
  87     unless (-f $filename) {
  88         $lang = 'en';
  89         $filename = "$htdocs/$theme/$lang/modules/$tmplbase";
  90     }
  91     my $template       = HTML::Template::Pro->new(
  92         filename          => $filename,
  93         die_on_bad_params => 1,
  94         global_vars       => 1,
  95         case_sensitive    => 1,
  96             loop_context_vars => 1,             # enable: __first__, __last__, __inner__, __odd__, __counter__
  97         path              => ["$htdocs/$theme/$lang/$path"]
  98     );
  99     my $themelang=( $interface ne 'intranet' ? '/opac-tmpl' : '/intranet-tmpl' )
 100           . "/$theme/$lang";
 101     $template->param(
 102         themelang => $themelang,
 103         yuipath => (C4::Context->preference("yuipath") eq "local"?"$themelang/lib/yui":C4::Context->preference("yuipath")),
 104         interface => ( $interface ne 'intranet' ? '/opac-tmpl' : '/intranet-tmpl' ),
 105         theme => $theme,
 106         opacstylesheet      => $opacstylesheet,
 107         opaccolorstylesheet => C4::Context->preference('opaccolorstylesheet'),
 108         opacsmallimage      => C4::Context->preference('opacsmallimage'),
 109         lang                => $lang
 110     );
 111
 112     # Bidirectionality
 113     my $current_lang = regex_lang_subtags($lang);
 114     my $bidi;
 115     $bidi = get_bidi($current_lang->{script}) if $current_lang->{script};
 116     # Languages
 117     my $languages_loop = getTranslatedLanguages($interface,$theme,$lang);
 118     $template->param(
 119             languages_loop => $languages_loop,
 120             bidi => $bidi
 121     ) unless @$languages_loop<2;
 122
 123     return $template;
 124 }
 125
 126 #---------------------------------------------------------------------------------------------------------
 127 # FIXME - POD
 128 sub themelanguage {
 129     my ( $htdocs, $tmpl, $interface, $query ) = @_;
 130     ($query) or warn "no query in themelanguage";
 131
 132     # Set some defaults for language and theme
 133     # First, check the user's preferences
 134     my $lang;
 135         my $http_env = $ENV{HTTP_ACCEPT_LANGUAGE};
 136         $http_env =~ m/(\w+-*\w*),/;
 137         my $language_preference = $1;
 138     my $http_accept_language = regex_lang_subtags($language_preference)->{language};
 139     if ($http_accept_language) {
 140         $lang = accept_language($http_accept_language,getTranslatedLanguages($interface,'prog'));
 141     }
 142     # But, if there's a cookie set, obey it
 143     $lang = $query->cookie('KohaOpacLanguage') if $query->cookie('KohaOpacLanguage');
 144     # Fall back to English
 145     my @languages;
 146     if ($interface eq 'intranet') {
 147         @languages = split ",", C4::Context->preference("language");
 148     } else {
 149         @languages = split ",", C4::Context->preference("opaclanguages");
 150     }
 151     if ($lang){
 152         @languages=($lang,@languages);
 153     } else {
 154         $lang = $languages[0];
 155     }
 156     my $theme = 'prog'; # in the event of theme failure default to 'prog' -fbcit
 157     my $dbh = C4::Context->dbh;
 158     my @themes;
 159     if ( $interface eq "intranet" ) {
 160         @themes    = split " ", C4::Context->preference("template");
 161     }
 162     else {
 163       # we are in the opac here, what im trying to do is let the individual user
 164       # set the theme they want to use.
 165       # and perhaps the them as well.
 166         #my $lang = $query->cookie('KohaOpacLanguage');
 167         @themes = split " ", C4::Context->preference("opacthemes");
 168     }
 169
 170  # searches through the themes and languages. First template it find it returns.
 171  # Priority is for getting the theme right.
 172     THEME:
 173     foreach my $th (@themes) {
 174         foreach my $la (@languages) {
 175             #for ( my $pass = 1 ; $pass <= 2 ; $pass += 1 ) {
 176                 # warn "$htdocs/$th/$la/modules/$interface-"."tmpl";
 177                 #$la =~ s/([-_])/ $1 eq '-'? '_': '-' /eg if $pass == 2;
 178                                 if ( -e "$htdocs/$th/$la/modules/$tmpl") {
 179                 #".($interface eq 'intranet'?"modules":"")."/$tmpl" ) {
 180                     $theme = $th;
 181                     $lang  = $la;
 182                     last THEME;
 183                 }
 184                 last unless $la =~ /[-_]/;
 185             #}
 186         }
 187     }
 188     return ( $theme, $lang );
 189 }
 190
 191 sub setlanguagecookie {
 192     my ( $query, $language, $uri ) = @_;
 193     my $cookie = $query->cookie(
 194         -name    => 'KohaOpacLanguage',
 195         -value   => $language,
 196         -expires => ''
 197     );
 198     print $query->redirect(
 199         -uri    => $uri,
 200         -cookie => $cookie
 201     );
 202 }
 203
 204 =item pagination_bar
 205
 206    pagination_bar($base_url, $nb_pages, $current_page, $startfrom_name)
 207
 208 Build an HTML pagination bar based on the number of page to display, the
 209 current page and the url to give to each page link.
 210
 211 C<$base_url> is the URL for each page link. The
 212 C<$startfrom_name>=page_number is added at the end of the each URL.
 213
 214 C<$nb_pages> is the total number of pages available.
 215
 216 C<$current_page> is the current page number. This page number won't become a
 217 link.
 218
 219 This function returns HTML, without any language dependency.
 220
 221 =cut
 222
 223 sub pagination_bar {
 224         my $base_url = (@_ ? shift : $ENV{SCRIPT_NAME} . $ENV{QUERY_STRING}) or return undef;
 225     my $nb_pages       = (@_) ? shift : 1;
 226     my $current_page   = (@_) ? shift : undef;  # delay default until later
 227     my $startfrom_name = (@_) ? shift : 'page';
 228
 229     # how many pages to show before and after the current page?
 230     my $pages_around = 2;
 231
 232         my $delim = qr/\&(?:amp;)?|;/;          # "non memory" cluster: no backreference
 233         $base_url =~ s/$delim*\b$startfrom_name=(\d+)//g; # remove previous pagination var
 234     unless (defined $current_page and $current_page > 0 and $current_page <= $nb_pages) {
 235         $current_page = ($1) ? $1 : 1;  # pull current page from param in URL, else default to 1
 236                 # $debug and    # FIXME: use C4::Debug;
 237                 # warn "with QUERY_STRING:" .$ENV{QUERY_STRING}. "\ncurrent_page:$current_page\n1:$1  2:$2  3:$3";
 238     }
 239         $base_url =~ s/($delim)+/$1/g;  # compress duplicate delims
 240         $base_url =~ s/$delim;//g;              # remove empties
 241         $base_url =~ s/$delim$//;               # remove trailing delim
 242
 243     my $url = $base_url . (($base_url =~ m/$delim/ or $base_url =~ m/\?/) ? '&amp;' : '?' ) . $startfrom_name . '=';
 244     my $pagination_bar = '';
 245
 246     # navigation bar useful only if more than one page to display !
 247     if ( $nb_pages > 1 ) {
 248
 249         # link to first page?
 250         if ( $current_page > 1 ) {
 251             $pagination_bar .=
 252                 "\n" . '&nbsp;'
 253               . '<a href="'
 254               . $url
 255               . '1" rel="start">'
 256               . '&lt;&lt;' . '</a>';
 257         }
 258         else {
 259             $pagination_bar .=
 260               "\n" . '&nbsp;<span class="inactive">&lt;&lt;</span>';
 261         }
 262
 263         # link on previous page ?
 264         if ( $current_page > 1 ) {
 265             my $previous = $current_page - 1;
 266
 267             $pagination_bar .=
 268                 "\n" . '&nbsp;'
 269               . '<a href="'
 270               . $url
 271               . $previous
 272               . '" rel="prev">' . '&lt;' . '</a>';
 273         }
 274         else {
 275             $pagination_bar .=
 276               "\n" . '&nbsp;<span class="inactive">&lt;</span>';
 277         }
 278
 279         my $min_to_display      = $current_page - $pages_around;
 280         my $max_to_display      = $current_page + $pages_around;
 281         my $last_displayed_page = undef;
 282
 283         for my $page_number ( 1 .. $nb_pages ) {
 284             if (
 285                    $page_number == 1
 286                 or $page_number == $nb_pages
 287                 or (    $page_number >= $min_to_display
 288                     and $page_number <= $max_to_display )
 289               )
 290             {
 291                 if ( defined $last_displayed_page
 292                     and $last_displayed_page != $page_number - 1 )
 293                 {
 294                     $pagination_bar .=
 295                       "\n" . '&nbsp;<span class="inactive">...</span>';
 296                 }
 297
 298                 if ( $page_number == $current_page ) {
 299                     $pagination_bar .=
 300                         "\n" . '&nbsp;'
 301                       . '<span class="currentPage">'
 302                       . $page_number
 303                       . '</span>';
 304                 }
 305                 else {
 306                     $pagination_bar .=
 307                         "\n" . '&nbsp;'
 308                       . '<a href="'
 309                       . $url
 310                       . $page_number . '">'
 311                       . $page_number . '</a>';
 312                 }
 313                 $last_displayed_page = $page_number;
 314             }
 315         }
 316
 317         # link on next page?
 318         if ( $current_page < $nb_pages ) {
 319             my $next = $current_page + 1;
 320
 321             $pagination_bar .= "\n"
 322               . '&nbsp;<a href="'
 323               . $url
 324               . $next
 325               . '" rel="next">' . '&gt;' . '</a>';
 326         }
 327         else {
 328             $pagination_bar .=
 329               "\n" . '&nbsp;<span class="inactive">&gt;</span>';
 330         }
 331
 332         # link to last page?
 333         if ( $current_page != $nb_pages ) {
 334             $pagination_bar .= "\n"
 335               . '&nbsp;<a href="'
 336               . $url
 337               . $nb_pages
 338               . '" rel="last">'
 339               . '&gt;&gt;' . '</a>';
 340         }
 341         else {
 342             $pagination_bar .=
 343               "\n" . '&nbsp;<span class="inactive">&gt;&gt;</span>';
 344         }
 345     }
 346
 347     return $pagination_bar;
 348 }
 349
 350 =item output_html_with_http_headers
 351
 352    &output_html_with_http_headers($query, $cookie, $html[, $content_type])
 353
 354 Outputs the HTML page $html with the appropriate HTTP headers,
 355 with the authentication cookie $cookie and a Content-Type that
 356 corresponds to the HTML page $html.
 357
 358 If the optional C<$content_type> parameter is called, set the
 359 response's Content-Type to that value instead of "text/html".
 360
 361 =cut
 362
 363 sub output_html_with_http_headers ($$$;$) {
 364     my $query = shift;
 365     my $cookie = shift;
 366     my $html = shift;
 367     my $content_type = @_ ? shift : "text/html";
 368     $content_type = "text/html" unless $content_type =~ m!/!; # very basic sanity check
 369     print $query->header(
 370         -type    => $content_type,
 371         -charset => 'UTF-8',
 372         -cookie  => $cookie,
 373         -Pragma => 'no-cache',
 374         -'Cache-Control' => 'no-cache',
 375     ), $html;
 376 }
 377
 378 sub output_ajax_with_http_headers ($$) {
 379     my ($query, $js) = @_;
 380     print $query->header(
 381         -type    => 'text/javascript',
 382         -charset => 'UTF-8',
 383         -Pragma  => 'no-cache',
 384         -'Cache-Control' => 'no-cache',
 385                 -expires =>'-1d',
 386     ), $js;
 387 }
 388
 389 sub is_ajax () {
 390         my $x_req = $ENV{HTTP_X_REQUESTED_WITH};
 391         return ($x_req and $x_req =~ /XMLHttpRequest/i) ? 1 : 0;
 392 }
 393
 394 END { }    # module clean-up code here (global destructor)
 395
 396 1;
 397 __END__
 398
 399 =back
 400
 401 =head1 AUTHOR
 402
 403 Koha Developement team <info@koha.org>
 404
 405 =cut