/**
* Render the row
*
* @param array $columnWidths Width of all columns
* @param \Zend\Text\Table\Decorator $decorator Decorator for the row borders
* @param integer $padding Padding for the columns
* @throws \Zend\Text\Table\Exception\OverflowException When there are too many columns
* @return string
*/
public function render(array $columnWidths, Decorator $decorator, $padding = 0)
{
// Prepare an array to store all column widths
$this->_columnWidths = array();
// If there is no single column, create a column which spans over the
// entire row
if (count($this->_columns) === 0) {
$this->appendColumn(new Column(null, null, count($columnWidths)));
}
// First we have to render all columns, to get the maximum height
$renderedColumns = array();
$maxHeight = 0;
$colNum = 0;
foreach ($this->_columns as $column) {
// Get the colspan of the column
$colSpan = $column->getColSpan();
// Verify if there are enough column widths defined
if ($colNum + $colSpan > count($columnWidths)) {
throw new Exception\OverflowException('Too many columns');
}
// Calculate the column width
$columnWidth = $colSpan - 1 + array_sum(array_slice($columnWidths, $colNum, $colSpan));
// Render the column and split it's lines into an array
$result = explode("\n", $column->render($columnWidth, $padding));
// Store the width of the rendered column
$this->_columnWidths[] = $columnWidth;
// Store the rendered column and calculate the new max height
$renderedColumns[] = $result;
$maxHeight = max($maxHeight, count($result));
// Set up the internal column number
$colNum += $colSpan;
}
// If the row doesnt contain enough columns to fill the entire row, fill
// it with an empty column
if ($colNum < count($columnWidths)) {
$remainingWidth = count($columnWidths) - $colNum - 1 + array_sum(array_slice($columnWidths, $colNum));
$renderedColumns[] = array(str_repeat(' ', $remainingWidth));
$this->_columnWidths[] = $remainingWidth;
}
// Add each single column line to the result
$result = '';
for ($line = 0; $line < $maxHeight; $line++) {
$result .= $decorator->getVertical();
foreach ($renderedColumns as $renderedColumn) {
if (isset($renderedColumn[$line]) === true) {
$result .= $renderedColumn[$line];
} else {
$result .= str_repeat(' ', strlen($renderedColumn[0]));
}
$result .= $decorator->getVertical();
}
$result .= "\n";
}
return $result;
}
