path: root/IkiWiki/Plugin/remove.pm

#!/usr/bin/perl
package IkiWiki::Plugin::remove;

use warnings;
use strict;
use IkiWiki 2.00;

sub import { #{{{
    hook(type => "formbuilder_setup", id => "remove", call => \&formbuilder_setup);
    hook(type => "formbuilder", id => "remove", call => \&formbuilder);
    hook(type => "sessioncgi", id => "remove", call => \&sessioncgi);

} # }}}

sub formbuilder_setup (@) { #{{{
    my %params=@_;
    my $form=$params{form};
    my $q=$params{cgi};

    if (defined $form->field("do") && $form->field("do") eq "edit") {
        push @{$params{buttons}}, "Remove";
        # TODO button for attachments
    }
} #}}}

sub confirmation_form ($$) { #{{{ 
    my $q=shift;
    my $session=shift;

    eval q{use CGI::FormBuilder};
    error($@) if $@;
    my @fields=qw(do page);
    my $f = CGI::FormBuilder->new(
        title => "confirm removal",
        name => "remove",
        header => 0,
        charset => "utf-8",
        method => 'POST',
        javascript => 0,
        params => $q,
        action => $config{cgiurl},
        stylesheet => IkiWiki::baseurl()."style.css",
        fields => \@fields,
    );
    
    $f->field(name => "do", type => "hidden", value => "remove", force => 1);
    $f->field(name => "page", label => "Will remove:", size => 60,
        validate => sub {
        # Validate page by checking that the page exists, and that
        # the user is allowed to edit(/remove) it.
        my $page=IkiWiki::titlepage(shift);
        if (! exists $pagesources{$page}) {
            $f->field(name => "page", message => gettext("page does not exist"));
            return 0;
        }
        else {
            IkiWiki::check_canedit($page, $q, $session);
            return 1;
        }
    });

    return $f, ["Remove", "Cancel"];
} #}}}

sub formbuilder (@) { #{{{
    my %params=@_;
    my $form=$params{form};

    if (defined $form->field("do") && $form->field("do") eq "edit" &&
        $form->submitted eq "Remove") {
        my $q=$params{cgi};
        my $session=$params{session};

            # Save current form state to allow returning to it later
        # without losing any edits.
        # (But don't save what button was submitted, to avoid
        # looping back to here.)
        # Note: "_submit" is CGI::FormBuilder internals.
        $q->param(-name => "_submit", -value => "");
        $session->param(postremove => scalar $q->Vars);
        IkiWiki::cgi_savesession($session);

        # Display a small confirmation form.
        my ($f, $buttons)=confirmation_form($q, $session);
        $f->field(name => "page", 
            value => IkiWiki::pagetitle($form->field("page")),
            force => 1);
        IkiWiki::showform($f, $buttons, $session, $q);
        exit 0;
    }
} #}}}

sub sessioncgi ($$) { #{{{
        my $q=shift;

    if ($q->param("do") eq 'remove') {
            my $session=shift;
        my ($form, $buttons)=confirmation_form($q, $session);
        IkiWiki::decode_form_utf8($form);

        if ($form->submitted eq 'Cancel') {
            # Load saved form state and return to edit form.
            my $postremove=CGI->new($session->param("postremove"));
            $session->clear("postremove");
            IkiWiki::cgi_savesession($session);
            IkiWiki::cgi($postremove, $session);
        }
        elsif ($form->submitted eq 'Remove' && $form->validate) {
            my $page=IkiWiki::titlepage($form->field("page"));
            my $file=$pagesources{$page};

            # Do removal, and update the wiki.
            require IkiWiki::Render;
            if ($config{rcs}) {
                IkiWiki::rcs_remove($file);
                IkiWiki::disable_commit_hook();
                IkiWiki::rcs_commit($file, gettext("removed"),
                    IkiWiki::rcs_prepedit($file),
                    $session->param("name"), $ENV{REMOTE_ADDR});
                IkiWiki::enable_commit_hook();
                IkiWiki::rcs_update();
            }
            IkiWiki::prune("$config{srcdir}/$file");
            IkiWiki::refresh();
            IkiWiki::saveindex();

            # Redirect to parent of the page.
            my $parent=IkiWiki::dirname($page);
            if (! exists $pagesources{$parent}) {
                $parent="index";
            }
            IkiWiki::redirect($q, $config{url}."/".htmlpage($parent));
        }
        else {
            IkiWiki::showform($form, $buttons, $session, $q);
        }

        exit 0;
    }
}

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