/[webpac]/trunk2/lib/WebPAC/Tree.pm
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revision 441 by dpavlin, Tue Sep 14 17:07:59 2004 UTC revision 492 by dpavlin, Sat Oct 9 21:48:30 2004 UTC
# Line 5  use strict; Line 5  use strict;
5    
6  use Carp;  use Carp;
7  use Log::Log4perl qw(get_logger :levels);  use Log::Log4perl qw(get_logger :levels);
8  use locale;  use YAML;
9    
10  =head1 NAME  =head1 NAME
11    
# Line 23  of tree individually (so you can limit d Line 23  of tree individually (so you can limit d
23    
24   my @tree = ({   my @tree = ({
25          # level 0          # level 0
26          code_arr        => sub { @{$l->{$_[0]}} },          code_arr        => sub { @{$_[0]} },
27          filter_code     => sub { shift },          filter_code     => sub { shift },
28          lookup_v900     => sub {          lookup_v900     => sub {
29                                  my ($c,$p) = @_;                                  my ($c,$p) = @_;
# Line 32  of tree individually (so you can limit d Line 32  of tree individually (so you can limit d
32                          },                          },
33          lookup_term     => sub { shift @{$l->{"d:".$_[0]}} },          lookup_term     => sub { shift @{$l->{"d:".$_[0]}} },
34          lookup_mfn      => sub { shift @{$l->{"900_mfn:".$_[0]}} },          lookup_mfn      => sub { shift @{$l->{"900_mfn:".$_[0]}} },
35          have_children   => sub { defined($l->{$_[1]}) },          have_children   => sub { return $l->{$_[1]} },
         child_code      => sub { return $_[1] },  
36          },{          },{
37          # level 1          # level 1
38          code_arr        => sub { @{$l->{$_[0]}} },          code_arr        => sub { @{$_[0]} },
39          filter_code     => sub { shift },          filter_code     => sub { shift },
40          lookup_v900     => sub {          lookup_v900     => sub {
41                                  my ($c,$p) = @_;                                  my ($c,$p) = @_;
# Line 46  of tree individually (so you can limit d Line 45  of tree individually (so you can limit d
45          lookup_term     => sub { shift @{$l->{"d:".$_[0]}} },          lookup_term     => sub { shift @{$l->{"d:".$_[0]}} },
46          lookup_mfn      => sub { shift @{$l->{"900_mfn:".$_[0]}} },          lookup_mfn      => sub { shift @{$l->{"900_mfn:".$_[0]}} },
47          have_children   => sub { 0 },          have_children   => sub { 0 },
         child_code      => sub { 0 },  
48   )};   )};
49    
50    You can, however, create recursion with C<have_children_at_level> discussed
51    below, but you loose ability to limit tree depth or to specify different
52    style for each level.
53    
54  Documentation for each element of tree is little sparse, but here it is:  Documentation for each element of tree is little sparse, but here it is:
55    
56  =over 5  =over 5
# Line 74  Returns code or C<false> if code has to Line 76  Returns code or C<false> if code has to
76    
77  Lookup value which will be called C<$v900> from now on.  Lookup value which will be called C<$v900> from now on.
78    
79   my $v900 = $t->{'lookup_v900'}->($code,$start_code);   my $v900 = $t->{'lookup_v900'}->($code);
80    
81  =item lookup_term  =item lookup_term
82    
# Line 90  Lookup mfn value, used to create hyperli Line 92  Lookup mfn value, used to create hyperli
92    
93  =item have_children  =item have_children
94    
95  Returns C<true> or C<false> depending if current node have children.  Returns children for next iteration of tree generation or undef.
96    
97     my $next_lvl = $t->{'have_children'}->($code,$v900);
98    
99   if ($t->{'have_children'}->($code,$v900,$start_code)) { ... }  =item have_children_at_level
100    
101  =item child_code  Returns children for next iteration and next level.
102    
103  Returns child code for next iteration of tree generation.   my ($level,$next_lvl) = $t->{'have_children_at_level'}->($code,$v900);
104    
105   my $child_code = $t->{'child_code'}->($code,$v900,$start_code);  It's safe to return undef just for next level data (C<$next_lvl> in example
106    above) to stop recursion.
107    
108  =back  =back
109    
# Line 151  sub new { Line 156  sub new {
156          $self->{'show_ids'} = [];          $self->{'show_ids'} = [];
157          $self->{'hide_ids'} = [];          $self->{'hide_ids'} = [];
158    
159          my $html = $self->unroll(0,'');          my $html = $self->unroll(0,());
160    
161            if (! $html) {
162                    $log->warn("no html generated by unroll...");
163                    return;
164            }
165    
166          my $html_file = $self->{'dir'}.'/'.$self->{'html'};          my $html_file = $self->{'dir'}.'/'.$self->{'html'};
167    
# Line 181  sub new { Line 191  sub new {
191    
192  Generate tree recursively.  Generate tree recursively.
193    
194   my $html = $tree->unroll($level,$start_code);   my $html = $tree->unroll($level,$data_arr);
195    
196  =cut  =cut
197    
198  sub unroll {  sub unroll {
199          my $self = shift;          my $self = shift;
200    
201          my ($level,$start_code) = @_;          my ($level,$data_arr) = @_;
202    
203          my $log = $self->_get_logger();          my $log = $self->_get_logger();
204    
205            if (! defined($level)) {
206                    $log->warn("level is undef, stoping recursion...");
207                    return;
208            }
209    
210            my $next_level = $level + 1;
211    
212          $log->logconfess("need level") unless (defined($level));          $log->logconfess("need level") unless (defined($level));
213          $log->logconfess("need start_code") unless (defined($start_code));          #$log->logconfess("need data_arr") unless (defined($data_arr));
214    
215          my $tree = $self->{'tree'};          my $tree = $self->{'tree'};
216    
# Line 202  sub unroll { Line 219  sub unroll {
219          # all levels passed?          # all levels passed?
220          return if (! defined($tree->[$level]));          return if (! defined($tree->[$level]));
221    
222          $log->debug("unroll level $level, start code $start_code");          $log->debug("unroll level $level");
223    
224          my $html;          my $html;
225    
226          foreach my $code ($tree->[$level]->{'code_arr'}->($start_code)) {          foreach my $code ($tree->[$level]->{'code_arr'}->($data_arr)) {
227    
228                  if ($code = $tree->[$level]->{'filter_code'}->($code)) {                  if ($code = $tree->[$level]->{'filter_code'}->($code)) {
229                                    
230                          $log->debug("# $level filter passed code $code");                          $log->debug("# $level filter passed code $code");
231    
232                          my $v900 = $tree->[$level]->{'lookup_v900'}->($code,$start_code) || $log->warn("can't lookup_v900($code,$start_code)");                          my $v900 = $tree->[$level]->{'lookup_v900'}->($code) || $log->warn("can't lookup_v900($code)") && return;
233                          $log->debug("# $level lookup_v900($code,$start_code) = $v900");                          $log->debug("# $level lookup_v900($code) = $v900");
234    
235                          my $term = $tree->[$level]->{'lookup_term'}->($code,$v900) || $log->warn("can't lookup_term($code,$v900)");                          my $term = $tree->[$level]->{'lookup_term'}->($code,$v900) || $log->warn("can't lookup_term($code,$v900)") && next;
236                          $log->debug("# $level lookup_term($code,$v900) = $term");                          $log->debug("# $level lookup_term($code,$v900) = $term");
237    
238                          my $mfn  = $tree->[$level]->{'lookup_mfn'}->($code,$v900)  || $log->warn("can't lookup_mfn($code,$v900)");                          my $mfn  = $tree->[$level]->{'lookup_mfn'}->($code,$v900)  || $log->warn("can't lookup_mfn($code,$v900)") && next;
239                          $log->debug("# $level lookup_mfn($code,$v900) = $mfn");                          $log->debug("# $level lookup_mfn($code,$v900) = $mfn");
240    
241                          $log->debug("$code -> $v900 : $term [$mfn]");                          $log->debug("$code -> $v900 : $term [$mfn]");
242    
243                          my ($link_start,$link_end) = ('','');                          my ($link_start,$link_end) = ('','');
244                    
245                          my $have_children = $tree->[$level]->{'have_children'}->($code,$v900,$start_code);                          my $have_children = $tree->[$level]->{'have_children'}->($code,$v900);
246                          if ($have_children) {  
247                                  ($link_start,$link_end) = (qq{<a href="#mfn$mfn" onClick="return toggle_display('id$mfn');">},qq{</a>});                          if (! $have_children) {
248                          } else {                                  $log->debug("# $level doesn't have_children($code,$v900)");
249                                  $log->debug("# $level doesn't have_children($code,$v900,$start_code)");                                  ($next_level,$have_children) = $tree->[$level]->{'have_children_at_level'}->($code,$v900) if ($tree->[$level]->{'have_children_at_level'});
250                                    $log->debug("# $level have_children($code,$v900) on level $next_level") if ($have_children);
251    
252                          }                          }
253    
254                            ($link_start,$link_end) = (qq{<a href="#mfn$mfn" onClick="return toggle_display('id$mfn');">},qq{</a>}) if ($have_children);
255    
256                          my $mfn_link = "thes/$mfn.html";                          my $mfn_link = "thes/$mfn.html";
257                          if (-e "out/$mfn_link") {                          if (-e "out/$mfn_link") {
258                                  $html .= " " x $level .                                  $html .= " " x $level .
259                                          qq{<li>${link_start}${term}${link_end}}.                                          qq{<li><a name="mfn${mfn}"></a>${link_start}<span id="o$mfn">${term}</span>${link_end}}.
260                                          qq{&nbsp;<a href="$mfn_link">&raquo;</a></li>\n};                                          qq{&nbsp;<a href="$mfn_link" onClick="javascript:return popup(this);">&raquo;</a></li>\n};
261                          } else {                          } else {
262                                  $log->warn("file 'out/$mfn_link' doesn't exist, skipping");                                  $log->warn("file 'out/$mfn_link' doesn't exist, skipping");
263                          }                          }
# Line 247  sub unroll { Line 268  sub unroll {
268                          my $style = $tree->[$level]->{'style'};                          my $style = $tree->[$level]->{'style'};
269    
270                          $html .= " " x $level .                          $html .= " " x $level .
271                                  qq{<a name="mfn$mfn"></a>\n <ul id="id$mfn"}.                                  qq{<ul id="id$mfn"}.
272                                  ($style ? ' style="'.$style.'"' : '').                                  ($style ? ' style="'.$style.'"' : '').
273                                  qq{>\n};                                  qq{>\n};
274    
# Line 262  sub unroll { Line 283  sub unroll {
283                                  push @{$self->{'show_ids'}}, "id$mfn";                                  push @{$self->{'show_ids'}}, "id$mfn";
284                          }                          }
285    
286                          $html .= $self->unroll($level+1, $tree->[$level]->{'child_code'}->($code,$v900,$start_code));                          $html .= $self->unroll($next_level, $have_children);
287                                                    
288                          $html .= " " x $level . qq{</ul>\n};                          $html .= " " x $level . qq{</ul>\n};
289    
# Line 294  sub generate_js { Line 315  sub generate_js {
315          print JS "var hide = ['",join("','",@{$self->{'hide_ids'}}),"'];\n";          print JS "var hide = ['",join("','",@{$self->{'hide_ids'}}),"'];\n";
316          close(JS);          close(JS);
317    
318          $log->debug("stored ",@{$self->{'show_ids'}}," shown and ",@{$self->{'hide_ids'}}," hidden elements");          $log->debug("stored ",scalar @{$self->{'show_ids'}}," shown and ",scalar @{$self->{'hide_ids'}}," hidden elements");
319    
320  }  }
321    
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