/[webpac]/trunk2/lib/WebPAC/Tree.pm
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revision 469 by dpavlin, Fri Sep 24 18:04:48 2004 UTC revision 575 by dpavlin, Mon Nov 1 18:00:26 2004 UTC
# Line 6  use strict; Line 6  use strict;
6  use Carp;  use Carp;
7  use Log::Log4perl qw(get_logger :levels);  use Log::Log4perl qw(get_logger :levels);
8  use YAML;  use YAML;
9    use Template;
10    
11  =head1 NAME  =head1 NAME
12    
# Line 14  WebPAC::Tree - create tree from lookup d Line 15  WebPAC::Tree - create tree from lookup d
15  =head1 DESCRIPTION  =head1 DESCRIPTION
16    
17  This module will create tree from lookup data. It requires quite complicated  This module will create tree from lookup data. It requires quite complicated
18  data structure, but once you get hang of that, it's peace of case :-)  data structure, but once you get hang of that, it's peace of cake :-)
19    
20  Data structure for tree definition is non-recursive, and defines each level  Data structure for tree definition is non-recursive, and defines each level
21  of tree individually (so you can limit depth of tree) like this:  of tree individually (so you can limit depth of tree) like this:
# Line 33  of tree individually (so you can limit d Line 34  of tree individually (so you can limit d
34          lookup_term     => sub { shift @{$l->{"d:".$_[0]}} },          lookup_term     => sub { shift @{$l->{"d:".$_[0]}} },
35          lookup_mfn      => sub { shift @{$l->{"900_mfn:".$_[0]}} },          lookup_mfn      => sub { shift @{$l->{"900_mfn:".$_[0]}} },
36          have_children   => sub { return $l->{$_[1]} },          have_children   => sub { return $l->{$_[1]} },
37            iframe          => 1,
38          },{          },{
39          # level 1          # level 1
40          code_arr        => sub { @{$_[0]} },          code_arr        => sub { @{$_[0]} },
# Line 45  of tree individually (so you can limit d Line 47  of tree individually (so you can limit d
47          lookup_term     => sub { shift @{$l->{"d:".$_[0]}} },          lookup_term     => sub { shift @{$l->{"d:".$_[0]}} },
48          lookup_mfn      => sub { shift @{$l->{"900_mfn:".$_[0]}} },          lookup_mfn      => sub { shift @{$l->{"900_mfn:".$_[0]}} },
49          have_children   => sub { 0 },          have_children   => sub { 0 },
50            style           => 'display: none',
51   )};   )};
52    
53  You can, however, create recursion with C<have_children_at_level> discussed  You can, however, create recursion with C<have_children_at_level> discussed
# Line 105  Returns children for next iteration and Line 108  Returns children for next iteration and
108  It's safe to return undef just for next level data (C<$next_lvl> in example  It's safe to return undef just for next level data (C<$next_lvl> in example
109  above) to stop recursion.  above) to stop recursion.
110    
111    =item iframe
112    
113    This optional option will create all children nodes in separate file, and iframe in tree html,
114    so that generated tee html will have resonable size with large number of nodes.
115    
116    =item style
117    
118    Optional option to specify style of this node.
119    
120  =back  =back
121    
122  =head1 METHODS  =head1 METHODS
# Line 114  above) to stop recursion. Line 126  above) to stop recursion.
126  Create new tree object  Create new tree object
127    
128   my $tree = new WebPAC::Tree(   my $tree = new WebPAC::Tree(
         dir => './out',  
         html => 'browse.html',  
         template => './output_template/tree.tt',  
         js => 'tree-ids.js',  
129          tree => \@tree,          tree => \@tree,
130          log => 'log4perl.conf',          log => 'log4perl.conf',
131            detail_url => sub {
132                    my $mfn = shift;
133                    my $path = "thes/${mfn}.html";
134                    return $path if (-e "./out/$path");
135            },
136            nodes_dir => 'nodes',
137   );   );
138    
 C<dir> is output directory in which html files and JavaScript files will be  
 created (think of it as C<public_html>).  
   
 C<html> is name of output html file.  
   
 C<template> is name of template. It uses Template Toolkit syntax [% var %],  
 but doesn't really use TT.  
   
 C<js> is name of JavaScript file with shown and hidden ids.  
   
139  C<tree> is tree array with levels of tree described above.  C<tree> is tree array with levels of tree described above.
140    
141  C<log> is optional parametar which specify filename of L<Log::Log4Perl>  C<log> is optional parametar which specify filename of L<Log::Log4Perl>
142  config file. Default is C<log.conf>.  config file. Default is C<log.conf>.
143    
144    C<detail_url> code ref to check if detail html exists (and return URL if
145    it does).
146    
147    C<nodes_dir> is relative path from output directory where tree nodes for
148    iframes will be created.
149    
150  =cut  =cut
151    
152  sub new {  sub new {
# Line 149  sub new { Line 159  sub new {
159    
160          my $log = $self->_get_logger();          my $log = $self->_get_logger();
161    
162          foreach my $p (qw(dir html template js tree)) {          $log->logconfess("need tree") unless ($self->{'tree'});
                 $log->logconfess("need $p") unless ($self->{$p});  
         }  
163    
164          $self->{'show_ids'} = [];          $self->{'show_ids'} = [];
165          $self->{'hide_ids'} = [];          $self->{'hide_ids'} = [];
166    
167          my $html = $self->unroll(0,());          # figure out relative URL to other content from nodes_dir
168            my $iframe_base = $self->{'nodes_dir'};
169            if ($iframe_base) {
170                    $iframe_base = s#[^/]*##g;
171                    $iframe_base = '../' x ( length($iframe_base) );
172                    $self->{'iframe_base'} = $iframe_base;
173                    $log->debug("nodes dir is '",$self->{'nodes_dir'},"' so iframe_base is '",$self->{'iframe_base'},"'");
174            }
175    
176            $self->{'tree_html'} = $self->unroll(0,());
177    
178            if (! $self->{'tree_html'}) {
179                    $log->warn("no html generated by unroll...");
180                    return;
181            }
182    
183            return $self;
184    }
185    
186    =head2 output
187    
188    Create output files from tree object
189    
190     $tree->output(
191            dir => './out',
192            html => 'browse.html',
193            template_dir => './output_template/',
194            template_tree => 'tree.tt',
195            template_node => 'node.tt',
196            js => 'tree-ids.js',
197     );
198    
199    C<dir> is output directory in which html files and JavaScript files will be
200    created (think of it as C<public_html>).
201    
202    C<html> is name of output html file.
203    
204    C<template_dir> is directory with Template Toolkit templates.
205    
206    C<template_tree> is name of template to produce tree.
207    
208    C<template_node> is (optional) name of template for node (if C<iframe>
209    options is used within tree definition).
210    
211          my $html_file = $self->{'dir'}.'/'.$self->{'html'};  C<js> is name of JavaScript file with shown and hidden ids.
212    
213    =cut
214    
215    sub output {
216            my $self = shift;
217    
218            my $args = {@_};
219    
220          open(TEMPLATE, $self->{'template'}) || $log->logdie("can't open '",$self->{'template'},": $!");          my $log = $self->_get_logger();
221          my $tmpl;  
222          while(<TEMPLATE>) {          foreach my $p (qw(dir html template_dir template_tree js)) {
223                  $tmpl .= $_;                  $log->logconfess("need $p") unless ($args->{$p});
224            }
225    
226            my $html = $self->{'tree_html'};
227            unless ($html) {
228                    $log->warn("no html, output aborted");
229                    return;
230          }          }
         close(TEMPLATE);  
231    
232          $log->info("creating '$html_file' with tree");          my $html_file = $args->{'dir'}.'/'.$args->{'html'};
233    
234          my $js_arr_file = $self->{'js'};          $log->debug("templates are in ",$args->{'template_dir'});
         $tmpl =~ s/\[%\s+js\s+%\]/$js_arr_file/gi;  
         $tmpl =~ s/\[%\s+tree\s+%\]/$html/gi;  
235    
236          open(HTML, ">", $html_file) || $log->logdie("can't open '$html_file': $!");          my $tt = Template->new(
237          print HTML $tmpl;                  INCLUDE_PATH => $args->{'template_dir'},
238          close(HTML);          );
239    
240          $self->generate_js();          my $var = {
241                    js => $args->{'dir'}.'/'.$args->{'js'},
242                    tree => $html,
243            };
244    
245            $log->info("creating '$html_file' with tree from ",$args->{'template_tree'});
246    
247            $tt->process($args->{'template_tree'}, $var, $html_file) || $log->logdie("template error: ",$tt->error());
248    
249            my $js_file = $args->{'dir'}."/".$args->{'js'};
250            $log->info("creating '$js_file' with tree data");
251            $self->generate_js(
252                    file => $js_file,
253            );
254    
255            if (! $self->{'nodes_dir'}) {
256                    $log->warn("skipping node creation");
257                    return $self;
258            }
259    
260            foreach my $mfn (keys %{$self->{'node_html'}}) {
261    
262                    my $html_file = $args->{'dir'}."/".$self->{'nodes_dir'}."/${mfn}.html";
263    
264                    $log->debug("creating tree node $html_file");
265    
266                    $var = {
267                            node => $self->{'node_html'}->{$mfn},
268                    };
269    
270                    $tt->process($args->{'template_node'}, $var, $html_file) || $log->logdie("template error: ",$tt->error());
271            }
272    
273          return $self;          return $self;
274  }  }
# Line 193  Generate tree recursively. Line 284  Generate tree recursively.
284  sub unroll {  sub unroll {
285          my $self = shift;          my $self = shift;
286    
287          my ($level,$data_arr) = @_;          my ($level,$data_arr, $base_path) = @_;
288    
289            $base_path ||= '';
290    
291          my $log = $self->_get_logger();          my $log = $self->_get_logger();
292    
# Line 214  sub unroll { Line 307  sub unroll {
307          # all levels passed?          # all levels passed?
308          return if (! defined($tree->[$level]));          return if (! defined($tree->[$level]));
309    
310          $log->debug("unroll level $level");          $log->debug("unroll level $level base path ",($base_path || "none"));
311    
312          my $html;          my $html;
313    
# Line 227  sub unroll { Line 320  sub unroll {
320                          my $v900 = $tree->[$level]->{'lookup_v900'}->($code) || $log->warn("can't lookup_v900($code)") && return;                          my $v900 = $tree->[$level]->{'lookup_v900'}->($code) || $log->warn("can't lookup_v900($code)") && return;
321                          $log->debug("# $level lookup_v900($code) = $v900");                          $log->debug("# $level lookup_v900($code) = $v900");
322    
323                          my $term = $tree->[$level]->{'lookup_term'}->($code,$v900) || $log->warn("can't lookup_term($code,$v900)") && return;                          my $term = $tree->[$level]->{'lookup_term'}->($code,$v900) || $log->warn("can't lookup_term($code,$v900)") && next;
324                          $log->debug("# $level lookup_term($code,$v900) = $term");                          $log->debug("# $level lookup_term($code,$v900) = $term");
325    
326                          my $mfn  = $tree->[$level]->{'lookup_mfn'}->($code,$v900)  || $log->warn("can't lookup_mfn($code,$v900)") && return;                          my $mfn  = $tree->[$level]->{'lookup_mfn'}->($code,$v900)  || $log->warn("can't lookup_mfn($code,$v900)") && next;
327                          $log->debug("# $level lookup_mfn($code,$v900) = $mfn");                          $log->debug("# $level lookup_mfn($code,$v900) = $mfn");
328    
329                          $log->debug("$code -> $v900 : $term [$mfn]");                          $log->debug("$code -> $v900 : $term [$mfn]");
330    
331                          my ($link_start,$link_end) = ('<a name="mfn'.$mfn.'"></a>','');                          my ($link_start,$link_end) = ('','');
332                    
333                          my $have_children = $tree->[$level]->{'have_children'}->($code,$v900);                          my $have_children = $tree->[$level]->{'have_children'}->($code,$v900);
334    
# Line 246  sub unroll { Line 339  sub unroll {
339    
340                          }                          }
341    
342                          ($link_start,$link_end) = (qq{<a href="#mfn$mfn" onClick="return toggle_display('id$mfn');">},qq{</a>}) if ($have_children);                          my $iframe = $tree->[$level]->{'iframe'};
343    
344                            if ($have_children) {
345                                    ($link_start,$link_end) = (qq{<a href="#mfn$mfn" onClick="return toggle_display('id$mfn');">},qq{</a>});
346                                    if ($iframe) {
347                                            my $url = $self->{'nodes_dir'} || $log->logdie("no nodes_dir?");
348                                            $url .= "/${mfn}.html";
349                                            $link_start = qq{<a href="#mfn$mfn" onClick="iframe_load('i$mfn','$url'); return toggle_display('id$mfn');">};
350                                    }
351                            }
352    
353                            my $mfn_link;
354                            $mfn_link = $self->{'detail_url'}->($mfn) if ($self->{'detail_url'});
355    
356                          my $mfn_link = "thes/$mfn.html";                          if ($mfn_link) {
357                          if (-e "out/$mfn_link") {                                  $term =~ s/ *#C# */ <img src="${base_path}img\/crovoc.png" border="0">/;
358                                  $html .= " " x $level .                                  $html .= " " x $level .
359                                          qq{<li>${link_start}<span id="o$mfn">${term}</span>${link_end}}.                                          qq{<li>${link_start}<span id="o$mfn">${term}</span>${link_end}}.
360                                          qq{&nbsp;<a href="$mfn_link">&raquo;</a></li>\n};                                          qq{&nbsp;<a href="${base_path}${mfn_link}" onClick="javascript:return popup(this);"><img src="${base_path}img/listic.png" border="0"></a></li>\n};
361                                    $log->debug("linked details to $mfn_link");
362                          } else {                          } else {
363                                  $log->warn("file 'out/$mfn_link' doesn't exist, skipping");                                  $log->warn("file 'out/$mfn_link' doesn't exist, skipping");
364                          }                          }
365    
366                            # save mfn for iframe
367                            push @{$self->{'mfn_arr'}}, $mfn;
368    
369                          unless ($have_children) {                          unless ($have_children) {
370                                  next;                                  next;
371                          }                          }
372                          my $style = $tree->[$level]->{'style'};                          my $style = $tree->[$level]->{'style'};
373    
374                          $html .= " " x $level .                          $html .= " " x $level .
375                                  qq{<a name="mfn$mfn"></a>\n <ul id="id$mfn"}.                                  qq{<ul id="id$mfn"}.
376                                  ($style ? ' style="'.$style.'"' : '').                                  ($style ? ' style="'.$style.'"' : '').
377                                  qq{>\n};                                  qq{>\n};
378    
# Line 278  sub unroll { Line 387  sub unroll {
387                                  push @{$self->{'show_ids'}}, "id$mfn";                                  push @{$self->{'show_ids'}}, "id$mfn";
388                          }                          }
389    
390                          $html .= $self->unroll($next_level, $have_children);  
391                                                    if ($iframe) {
392    
393                                    # reset list of current mfns
394                                    $self->{'mfn_arr'} = ();
395    
396                                    # unroll to separate file
397                                    $self->{'node_html'}->{$mfn} = $self->unroll($next_level, $have_children, $self->{'iframe_base'});
398                                    $html .= " " x $level .
399                                    qq{<iframe id="i$mfn" name="i$mfn" width="100%" height="0" frameborder="0" border="0" onLoad="iframe_resize(this.name);"></iframe>};
400                                    @{$self->{'iframe_mfn'}->{$mfn}} = @{$self->{'mfn_arr'}};
401    
402                            } else {
403                                    # unroll at base HTML
404                                    $html .= $self->unroll($next_level, $have_children, $base_path);
405                            }
406    
407                          $html .= " " x $level . qq{</ul>\n};                          $html .= " " x $level . qq{</ul>\n};
408    
409                  }                  }
# Line 292  sub unroll { Line 416  sub unroll {
416  Generate JavaScript arrays C<show> and C<hide> used to toggle display of  Generate JavaScript arrays C<show> and C<hide> used to toggle display of
417  elements.  elements.
418    
419   $tree->generate_js();   $tree->generate_js(
420            file = "./out/tree-ids.js",
421     );
422    
423  =cut  =cut
424    
425  sub generate_js {  sub generate_js {
426          my $self = shift;          my $self = shift;
427    
428            my $args = {@_};
429    
430          my $log = $self->_get_logger();          my $log = $self->_get_logger();
431    
432          my $js_file = $self->{'dir'}.'/'.$self->{'js'};          my $js_file = $args->{'file'};
433            $log->die("need file") unless ($args->{'file'});
434    
435          $log->info("creating '$js_file' with arrays of shown and hidden ids");          $log->info("creating '$js_file' with arrays of shown and hidden ids");
436    
437          open(JS, ">", $js_file) || $log->logdie("can't open '$js_file': $!");          open(JS, ">", $js_file) || $log->logdie("can't open '$js_file': $!");
438          print JS "var show = ['",join("','",@{$self->{'show_ids'}}),"'];\n";          print JS "var show = ['",join("','",@{$self->{'show_ids'}}),"'];\n";
439          print JS "var hide = ['",join("','",@{$self->{'hide_ids'}}),"'];\n";          print JS "var hide = ['",join("','",@{$self->{'hide_ids'}}),"'];\n";
440    
441            print JS "var mfn_iframe = [\n";
442            foreach my $if (keys %{$self->{'iframe_mfn'}}) {
443    #               print JS " ",join(",",map { "[$_:$if]" } @{$self->{'iframe_mfn'}->{$if}}),",\n";
444            }
445            print JS " null\n]\n";
446    
447          close(JS);          close(JS);
448    
449          $log->debug("stored ",scalar @{$self->{'show_ids'}}," shown and ",scalar @{$self->{'hide_ids'}}," hidden elements");          $log->debug("stored ",scalar @{$self->{'show_ids'}}," shown and ",scalar @{$self->{'hide_ids'}}," hidden elements");
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