Basic implementation event signup

lib/dompdf/src/FrameDecorator/TableRowGroup.php

@@ -0,0 +1,70 @@
+<?php
+/**
+ * @package dompdf
+ * @link    http://dompdf.github.com/
+ * @author  Benj Carson <benjcarson@digitaljunkies.ca>
+ * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
+ */
+namespace Dompdf\FrameDecorator;
+
+use Dompdf\Dompdf;
+use Dompdf\Frame;
+
+/**
+ * Table row group decorator
+ *
+ * Overrides split() method for tbody, thead & tfoot elements
+ *
+ * @package dompdf
+ */
+class TableRowGroup extends AbstractFrameDecorator
+{
+
+    /**
+     * Class constructor
+     *
+     * @param Frame $frame   Frame to decorate
+     * @param Dompdf $dompdf Current dompdf instance
+     */
+    function __construct(Frame $frame, Dompdf $dompdf)
+    {
+        parent::__construct($frame, $dompdf);
+    }
+
+    /**
+     * Override split() to remove all child rows and this element from the cellmap
+     *
+     * @param Frame $child
+     * @param bool $force_pagebreak
+     *
+     * @return void
+     */
+    function split(Frame $child = null, $force_pagebreak = false)
+    {
+        if (is_null($child)) {
+            parent::split();
+            return;
+        }
+
+        // Remove child & all subsequent rows from the cellmap
+        $cellmap = $this->get_parent()->get_cellmap();
+        $iter = $child;
+
+        while ($iter) {
+            $cellmap->remove_row($iter);
+            $iter = $iter->get_next_sibling();
+        }
+
+        // If we are splitting at the first child remove the
+        // table-row-group from the cellmap as well
+        if ($child === $this->get_first_child()) {
+            $cellmap->remove_row_group($this);
+            parent::split();
+            return;
+        }
+
+        $cellmap->update_row_group($this, $child->get_prev_sibling());
+        parent::split($child);
+    }
+}
+