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<table width="100%">
  <tr>
    <td valign="top" width="50%">
      <h3><&|/l&>Current Links</&></h3>
<table>
  <tr>
    <td class="labeltop"><&|/l&>Depends on</&>:</td>
    <td class="value">
% if ( $hash{DependsOn} ) {
% for my $link ( values %{$hash{DependsOn}} ) {
      <input type="checkbox" class="checkbox" name="DeleteLink--<%$link->Type%>-<%$link->Target%>" value="1" />
        <& /Elements/ShowLink, URI => $link->TargetURI &><br />
% } }
    </td>
  </tr>
  <tr>
    <td class="labeltop"><&|/l&>Depended on by</&>:</td>
    <td class="value">
% if ( $hash{DependedOnBy} ) {
% for my $link ( values %{$hash{DependedOnBy}} ) {
      <input type="checkbox" class="checkbox" name="DeleteLink-<%$link->Base%>-<%$link->Type%>-" value="1" />
        <& /Elements/ShowLink, URI => $link->BaseURI &><br />
% } }
    </td>
  </tr>
  <tr>
    <td class="labeltop"><&|/l&>Parents</&>:</td>
    <td class="value">
% if ( $hash{MemberOf} ) {
% for my $link ( values %{$hash{MemberOf}} ) {
      <input type="checkbox" class="checkbox" name="DeleteLink--<%$link->Type%>-<%$link->Target%>" value="1" />
        <& /Elements/ShowLink, URI => $link->TargetURI &><br />
% } }
    </td>
  </tr>
  <tr>
    <td class="labeltop"><&|/l&>Children</&>:</td>
    <td class="value">
% if ( $hash{Members} ) {
% for my $link ( values %{$hash{Members}} ) {
      <input type="checkbox" class="checkbox" name="DeleteLink-<%$link->Base%>-<%$link->Type%>-" value="1" />
        <& /Elements/ShowLink, URI => $link->BaseURI &><br />
% } }
    </td>
  </tr>
  <tr>
    <td class="labeltop"><&|/l&>Refers to</&>:</td>
    <td class="value">
% if ( $hash{RefersTo} ) {
% for my $link ( values %{$hash{RefersTo}} ) {
      <input type="checkbox" class="checkbox" name="DeleteLink--<%$link->Type%>-<%$link->Target%>" value="1" />
        <& /Elements/ShowLink, URI => $link->TargetURI &><br />
% } }
    </td>
  </tr>
  <tr>
    <td class="labeltop"><&|/l&>Referred to by</&>:</td>
    <td class="value">
% if ( $hash{ReferredToBy} ) {
% for my $link ( values %{$hash{ReferredToBy}} ) {
% # Skip reminders
% next if (UNIVERSAL::isa($link->BaseObj, 'RT::Ticket')  && $link->BaseObj->Type eq 'reminder');
      <input type="checkbox" class="checkbox" name="DeleteLink-<%$link->Base%>-<%$link->Type%>-" value="1" />
        <& /Elements/ShowLink, URI => $link->BaseURI &><br />
% } }
    </td>
  </tr>
  <tr>
    <td></td>
    <td><i><&|/l&>(Check box to delete)</&></i></td>
  </tr>
</table>
</td>
<td valign="top">
<h3><&|/l&>New Links</&></h3>
<i><&|/l&>Enter tickets or URIs to link tickets to. Separate multiple entries with spaces.</&>
</i><br />
<table>
  <tr>
    <td class="label"><&|/l&>Merge into</&>:</td>
    <td class="entry"><input name="Ticket-MergeInto" value="<% $ARGS{'Ticket-MergeInto'} || '' %>" /> <i><&|/l&>(only one ticket)</&></i></td>
  </tr>
  <tr>
    <td class="label"><&|/l&>Depends on</&>:</td>
    <td class="entry"><input name="Ticket-DependsOn" value="<% $ARGS{'Ticket-DependsOn'} || '' %>" /></td>
  </tr>
  <tr>
    <td class="label"><&|/l&>Depended on by</&>:</td>
    <td class="entry"><input name="DependsOn-Ticket" value="<% $ARGS{'DependsOn-Ticket'} || '' %>" /></td>
  </tr>
  <tr>
    <td class="label"><&|/l&>Parents</&>:</td>
    <td class="entry"><input name="Ticket-MemberOf" value="<% $ARGS{'Ticket-MemberOf'} || '' %>" /></td>
  </tr>
  <tr>
    <td class="label"><&|/l&>Children</&>:</td>
    <td class="entry"> <input name="MemberOf-Ticket" value="<% $ARGS{'MemberOf-Ticket'} || '' %>" /></td>
  </tr>
  <tr>
    <td class="label"><&|/l&>Refers to</&>:</td>
    <td class="entry"><input name="Ticket-RefersTo" value="<% $ARGS{'Ticket-RefersTo'} || '' %>" /></td>
  </tr>
  <tr>
    <td class="label"><&|/l&>Referred to by</&>:</td>
    <td class="entry"> <input name="RefersTo-Ticket" value="<% $ARGS{'RefersTo-Ticket'} || '' %>" /></td>
  </tr>
</table>
</td>
</tr>
</table>

<%ARGS>
$Tickets => undef
</%ARGS>

<%INIT>
my %hash;
if ( $Tickets && $Tickets->Count ) {
    my $first_ticket = $Tickets->Next or last; #avoid errors on bulk delete
    # we only show current links that eixst on all the tickets
    for my $type ( qw/DependsOn DependedOnBy Members MemberOf RefersTo
            ReferredToBy/ ) {
        my $target_or_base =
            $type =~ /DependsOn|MemberOf|RefersTo/ ? 'Target' : 'Base';
        while ( my $link = $first_ticket->$type->Next ) {
            $hash{$type}{$link->$target_or_base} = $link;
        }
    }

    while ( my $ticket = $Tickets->Next ) {
        for my $type ( qw/DependsOn DependedOnBy Members MemberOf RefersTo
                ReferredToBy/ ) {
            my $target_or_base =
                $type =~ /DependsOn|MemberOf|RefersTo/ ? 'Target' : 'Base';
            # if $hash{$type} is empty, no need to check any more
            next unless $hash{$type} && keys %{$hash{$type}};
            my %exists;
            while ( my $link = $ticket->$type->Next ) {
                $exists{$link->$target_or_base}++;
            }

            for ( keys %{$hash{$type}} ) {
                delete $hash{$type}{$_} unless $exists{$_};
            }
        }
    }
}
</%INIT>