IkiWiki/Plugin/remove.pm

   1 #!/usr/bin/perl
   2 package IkiWiki::Plugin::remove;
   3
   4 use warnings;
   5 use strict;
   6 use IkiWiki 2.00;
   7
   8 sub import { #{{{
   9         hook(type => "formbuilder_setup", id => "remove", call => \&formbuilder_setup);
  10         hook(type => "formbuilder", id => "remove", call => \&formbuilder);
  11         hook(type => "sessioncgi", id => "remove", call => \&sessioncgi);
  12
  13 } # }}}
  14
  15 sub formbuilder_setup (@) { #{{{
  16         my %params=@_;
  17         my $form=$params{form};
  18         my $q=$params{cgi};
  19
  20         if (defined $form->field("do") && $form->field("do") eq "edit") {
  21                 push @{$params{buttons}}, "Remove";
  22                 # TODO button for attachments
  23         }
  24 } #}}}
  25
  26 sub confirmation_form ($$) { #{{{
  27         my $q=shift;
  28         my $session=shift;
  29
  30         eval q{use CGI::FormBuilder};
  31         error($@) if $@;
  32         my @fields=qw(do page);
  33         my $f = CGI::FormBuilder->new(
  34                 title => "confirm removal",
  35                 name => "remove",
  36                 header => 0,
  37                 charset => "utf-8",
  38                 method => 'POST',
  39                 javascript => 0,
  40                 params => $q,
  41                 action => $config{cgiurl},
  42                 stylesheet => IkiWiki::baseurl()."style.css",
  43                 fields => \@fields,
  44         );
  45
  46         $f->field(name => "do", type => "hidden", value => "remove", force => 1);
  47         $f->field(name => "page", label => "Will remove:", size => 60,
  48                 validate => sub {
  49                 # Validate page by checking that the page exists, and that
  50                 # the user is allowed to edit(/delete) it.
  51                 my $page=IkiWiki::titlepage(shift);
  52                 if (! exists $pagesources{$page}) {
  53                         $f->field(name => "page", message => gettext("page does not exist"));
  54                         return 0;
  55                 }
  56                 else {
  57                         IkiWiki::check_canedit($page, $q, $session);
  58                         return 1;
  59                 }
  60         });
  61
  62         return $f, ["Remove", "Cancel"];
  63 } #}}}
  64
  65 sub formbuilder (@) { #{{{
  66         my %params=@_;
  67         my $form=$params{form};
  68
  69         if (defined $form->field("do") && $form->field("do") eq "edit" &&
  70             $form->submitted eq "Remove") {
  71                 my $q=$params{cgi};
  72                 my $session=$params{session};
  73
  74                 # Save current form state to allow returning to it later
  75                 # without losing any edits.
  76                 # (But don't save what button was submitted, to avoid
  77                 # looping back to here.)
  78                 # Note: "_submit" is CGI::FormBuilder internals.
  79                 $q->param(-name => "_submit", -value => "");
  80                 $session->param(postremove => scalar $q->Vars);
  81                 IkiWiki::cgi_savesession($session);
  82
  83                 # Display a small confirmation form.
  84                 my ($f, $buttons)=confirmation_form($q, $session);
  85                 $f->field(name => "page",
  86                         value => IkiWiki::pagetitle($form->field("page")),
  87                         force => 1);
  88                 IkiWiki::showform($f, $buttons, $session, $q);
  89                 exit 0;
  90         }
  91 } #}}}
  92
  93 sub sessioncgi ($$) { #{{{
  94         my $q=shift;
  95
  96         if ($q->param("do") eq 'remove') {
  97                 my $session=shift;
  98                 my ($form, $buttons)=confirmation_form($q, $session);
  99                 IkiWiki::decode_form_utf8($form);
 100                 if ($form->submitted eq 'Cancel') {
 101                         # Load saved form state and return to edit form.
 102                         my $postremove=CGI->new($session->param("postremove"));
 103                         $session->clear("postremove");
 104                         IkiWiki::cgi_savesession($session);
 105                         IkiWiki::cgi($postremove, $session);
 106                         exit 0;
 107                 }
 108                 elsif ($form->submitted eq 'Remove' && $form->validate) {
 109                         error("removal not yet implemented"); # TODO
 110                 }
 111                 else {
 112                         IkiWiki::showform($form, $buttons, $session, $q);
 113                         exit 0;
 114                 }
 115         }
 116 }
 117
 118 1