/**
* Generates datagrid headrer.
* @return Html
*/
protected function generateHeaderRow()
{
$row = $this->getWrapper('row.header container');
// checker
if ($this->dataGrid->hasOperations()) {
$cell = $this->getWrapper('row.header cell container');
$cell->addClass('checker');
if ($this->dataGrid->hasFilters()) {
$cell->rowspan(2);
}
$row->add($cell);
}
// headers
foreach ($this->dataGrid->getColumns() as $column) {
$value = $text = $column->caption;
if ($column->isOrderable()) {
$i = 1;
parse_str($this->dataGrid->order, $list);
foreach ($list as $field => $dir) {
$list[$field] = array($dir, $i++);
}
if (isset($list[$column->getName()])) {
$a = $list[$column->getName()][0] === 'a';
$d = $list[$column->getName()][0] === 'd';
} else {
$a = $d = FALSE;
}
if (count($list) > 1 && isset($list[$column->getName()])) {
$text .= Html::el('span')->setHtml($list[$column->getName()][1]);
}
$up = clone $down = Html::el('a')->addClass(Columns\Column::$ajaxClass);
$up->addClass($a ? 'active' : '')->href($column->getOrderLink('a'))->add(Html::el('span')->class('up'));
$down->addClass($d ? 'active' : '')->href($column->getOrderLink('d'))->add(Html::el('span')->class('down'));
$positioner = Html::el('span')->class('positioner')->add($up)->add($down);
$active = $a || $d;
$value = (string) Html::el('a')->href($column->getOrderLink())->addClass(Columns\Column::$ajaxClass)->setHtml($text) . $positioner;
} else {
$value = (string) Html::el('p')->setText($value);
}
$cell = $this->getWrapper('row.header cell container')->setHtml($value);
$cell->attrs = $column->getHeaderPrototype()->attrs;
$cell->addClass(isset($active) && $active == TRUE ? $this->getValue('row.header cell .active') : NULL);
if ($column instanceof Columns\ActionColumn) {
$cell->addClass('actions');
}
$row->add($cell);
}
return $row;
}
