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<?php
/**
* @package dompdf
* @link https://github.com/dompdf/dompdf
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
namespace Dompdf\Frame;
use Dompdf\Dompdf;
use Dompdf\Exception;
use Dompdf\Frame;
use Dompdf\FrameDecorator\AbstractFrameDecorator;
use Dompdf\FrameDecorator\Page as PageFrameDecorator;
use Dompdf\FrameReflower\Page as PageFrameReflower;
use Dompdf\Positioner\AbstractPositioner;
use DOMXPath;
/**
* Contains frame decorating logic
*
* This class is responsible for assigning the correct {@link AbstractFrameDecorator},
* {@link AbstractPositioner}, and {@link AbstractFrameReflower} objects to {@link Frame}
* objects. This is determined primarily by the Frame's display type, but
* also by the Frame's node's type (e.g. DomElement vs. #text)
*
* @package dompdf
*/
class Factory
{
/**
* Array of positioners for specific frame types
*
* @var AbstractPositioner[]
*/
protected static $_positioners;
/**
* Decorate the root Frame
*
* @param Frame $root The frame to decorate
* @param Dompdf $dompdf The dompdf instance
*
* @return PageFrameDecorator
*/
public static function decorate_root(Frame $root, Dompdf $dompdf): PageFrameDecorator
{
$frame = new PageFrameDecorator($root, $dompdf);
$frame->set_reflower(new PageFrameReflower($frame));
$root->set_decorator($frame);
return $frame;
}
/**
* Decorate a Frame
*
* @param Frame $frame The frame to decorate
* @param Dompdf $dompdf The dompdf instance
* @param Frame|null $root The root of the frame
*
* @throws Exception
* @return AbstractFrameDecorator|null
* FIXME: this is admittedly a little smelly...
*/
public static function decorate_frame(Frame $frame, Dompdf $dompdf, ?Frame $root = null): ?AbstractFrameDecorator
{
$style = $frame->get_style();
$display = $style->display;
switch ($display) {
case "block":
$positioner = "Block";
$decorator = "Block";
$reflower = "Block";
break;
case "inline-block":
$positioner = "Inline";
$decorator = "Block";
$reflower = "Block";
break;
case "inline":
$positioner = "Inline";
if ($frame->is_text_node()) {
$decorator = "Text";
$reflower = "Text";
} else {
$decorator = "Inline";
$reflower = "Inline";
}
break;
case "table":
$positioner = "Block";
$decorator = "Table";
$reflower = "Table";
break;
case "inline-table":
$positioner = "Inline";
$decorator = "Table";
$reflower = "Table";
break;
case "table-row-group":
case "table-header-group":
case "table-footer-group":
$positioner = "NullPositioner";
$decorator = "TableRowGroup";
$reflower = "TableRowGroup";
break;
case "table-row":
$positioner = "NullPositioner";
$decorator = "TableRow";
$reflower = "TableRow";
break;
case "table-cell":
$positioner = "TableCell";
$decorator = "TableCell";
$reflower = "TableCell";
break;
case "list-item":
$positioner = "Block";
$decorator = "Block";
$reflower = "Block";
break;
case "-dompdf-list-bullet":
if ($style->list_style_position === "inside") {
$positioner = "Inline";
} else {
$positioner = "ListBullet";
}
if ($style->list_style_image !== "none") {
$decorator = "ListBulletImage";
} else {
$decorator = "ListBullet";
}
$reflower = "ListBullet";
break;
case "-dompdf-image":
$positioner = "Inline";
$decorator = "Image";
$reflower = "Image";
break;
case "-dompdf-br":
$positioner = "Inline";
$decorator = "Inline";
$reflower = "Inline";
break;
default:
case "none":
if ($style->_dompdf_keep !== "yes") {
// Remove the node and the frame
$frame->get_parent()->remove_child($frame);
return null;
}
$positioner = "NullPositioner";
$decorator = "NullFrameDecorator";
$reflower = "NullFrameReflower";
break;
}
// Handle CSS position
$position = $style->position;
if ($position === "absolute") {
$positioner = "Absolute";
} elseif ($position === "fixed") {
$positioner = "Fixed";
}
$node = $frame->get_node();
// Handle nodeName
if ($node->nodeName === "img") {
$style->set_prop("display", "-dompdf-image");
$decorator = "Image";
$reflower = "Image";
}
$decorator = "Dompdf\\FrameDecorator\\$decorator";
$reflower = "Dompdf\\FrameReflower\\$reflower";
/** @var AbstractFrameDecorator $deco */
$deco = new $decorator($frame, $dompdf);
$deco->set_positioner(self::getPositionerInstance($positioner));
$deco->set_reflower(new $reflower($deco, $dompdf->getFontMetrics()));
if ($root) {
$deco->set_root($root);
}
if ($display === "list-item") {
// Insert a list-bullet frame
$xml = $dompdf->getDom();
$bullet_node = $xml->createElement("bullet"); // arbitrary choice
$b_f = new Frame($bullet_node);
$node = $frame->get_node();
$parent_node = $node->parentNode;
if ($parent_node && $parent_node instanceof \DOMElement) {
if (!$parent_node->hasAttribute("dompdf-children-count")) {
$xpath = new DOMXPath($xml);
$count = $xpath->query("li", $parent_node)->length;
$parent_node->setAttribute("dompdf-children-count", $count);
}
if (is_numeric($node->getAttribute("value"))) {
$index = intval($node->getAttribute("value"));
} else {
if (!$parent_node->hasAttribute("dompdf-counter")) {
$index = ($parent_node->hasAttribute("start") ? $parent_node->getAttribute("start") : 1);
} else {
$index = (int)$parent_node->getAttribute("dompdf-counter") + 1;
}
}
$parent_node->setAttribute("dompdf-counter", $index);
$bullet_node->setAttribute("dompdf-counter", $index);
}
$new_style = $dompdf->getCss()->create_style();
$new_style->set_prop("display", "-dompdf-list-bullet");
$new_style->inherit($style);
$b_f->set_style($new_style);
$deco->prepend_child(Factory::decorate_frame($b_f, $dompdf, $root));
}
return $deco;
}
/**
* Creates Positioners
*
* @param string $type Type of positioner to use
*
* @return AbstractPositioner
*/
protected static function getPositionerInstance(string $type): AbstractPositioner
{
if (!isset(self::$_positioners[$type])) {
$class = '\\Dompdf\\Positioner\\'.$type;
self::$_positioners[$type] = new $class();
}
return self::$_positioners[$type];
}
}
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