function handle(&$params)
{
$app =& Dataface_Application::getInstance();
if (!@$_GET['history__id']) {
return PEAR::raiseError('No history id supplied', DATAFACE_E_ERROR);
}
$historyid = $_GET['history__id'];
$query =& $app->getQuery();
$table = $query['-table'];
$r = $app->getRecord();
import('Dataface/HistoryTool.php');
$ht = new Dataface_HistoryTool();
if (@$_GET['-fromcurrent']) {
$record = $ht->getDiffs($table, $historyid);
$record->escapeOutput = false;
} else {
if (@$_GET['-show_changes']) {
$thisVersion = $ht->getRecordById($table, $historyid);
if (PEAR::isError($thisVersion)) {
return $thisVersion;
} else {
if (!$thisVersion) {
return PEAR::raiseError('No history record found', DATAFACE_E_ERROR);
}
}
$mdate = $thisVersion->strval("history__modified");
//echo "mdate: ".$mdate;
$prevDate = date('Y-m-d H:i:s', strtotime('-1 second', strtotime($mdate)));
//echo " prevdate: ".$prevDate.' ';
$prevVersionId = $ht->getPreviousVersion($r, $prevDate, $thisVersion->val('history__language'), null, true);
//echo "Prev: $prevVersionId";
if (!$prevVersionId) {
$record = new Dataface_Record($table . '__history', array());
} else {
$record = $ht->getDiffs($table, $prevVersionId, $historyid);
}
$record->escapeOutput = false;
} else {
$record = $ht->getRecordById($table, $historyid);
}
}
if (!$record) {
return PEAR::raiseError("No history record for table {$table} with history id {$historyid} could be found", DATAFACE_E_ERROR);
}
if (PEAR::isError($record)) {
return $record;
}
$record->secureDisplay = false;
$context = array('history_record' => &$record);
$context['source_record'] = $app->getRecord();
$t =& Dataface_Table::loadTable($table);
$numfields = count($t->fields());
$pts = 0;
$ppf = array();
$fields = $t->fields();
$tmp = array();
foreach ($fields as $k => $f) {
if ($r->checkPermission('view', array('field' => $k))) {
$tmp[$k] = $fields[$k];
}
}
$fields = $tmp;
$context['fields'] = $fields;
foreach ($fields as $field) {
if ($t->isText($field['name'])) {
$pts += 5;
$ppf[$field['name']] = $pts;
} else {
$pts++;
$ppf[$field['name']] = $pts;
}
}
$firstField = null;
$threshold = floatval(floatval($pts) / floatval(2));
foreach ($fields as $field) {
if ($ppf[$field['name']] >= $threshold) {
$firstField = $field['name'];
break;
}
}
$context['first_field_second_col'] = $firstField;
$context['changes'] = @$_GET['-show_changes'];
$context['table'] =& $t;
df_display($context, 'Dataface_HistoryRecordDetails.html');
}
