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<?php |
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namespace Goetas\Twital\Attribute; |
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use Goetas\Twital\Attribute as AttributeBase; |
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use Goetas\Twital\Compiler; |
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use Goetas\Twital\Helper\DOMHelper; |
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use Goetas\Twital\Twital; |
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/** |
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* @author Asmir Mustafic <[email protected]> |
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*/ |
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class ExtendsAttribute implements AttributeBase |
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{ |
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public function visit(\DOMAttr $att, Compiler $context) |
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{ |
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$node = $att->ownerElement; |
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$filename = '"' . $att->value . '"'; |
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$xp = new \DOMXPath($att->ownerDocument); |
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$xp->registerNamespace("t", Twital::NS); |
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$candidates = array(); |
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foreach ($xp->query(".//*[@t:block-inner or @t:block-outer]|.//t:*", $node) as $blockNode) { |
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$ancestors = $xp->query("ancestor::*[@t:block-inner or @t:block-outer or @t:extends]", $blockNode); |
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if ($ancestors->length === 1) { |
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$candidates[] = $blockNode; |
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} |
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} |
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// having block-inner makes no sense when child of an t:extends (t:extend can have only t:block child) |
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// so lets convert them to t:block nodes |
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$candidates = $this->convertBlockInnerIntoBlock($candidates, $node); |
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foreach ($candidates as $candidate) { |
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if ($candidate->parentNode !== $node) { |
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$candidate->parentNode->removeChild($candidate); |
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$node->appendChild($candidate); |
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} |
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} |
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if ($candidates) { |
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foreach (iterator_to_array($node->childNodes) as $k => $item) { |
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if (!in_array($item, $candidates, true)) { |
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$node->removeChild($item); |
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} |
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} |
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} |
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$context->compileChilds($node); |
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$set = iterator_to_array($node->childNodes); |
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if (count($set)) { |
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$n = $node->ownerDocument->createTextNode("\n"); |
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array_unshift($set, $n); |
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} |
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$ext = $context->createControlNode("extends {$filename}"); |
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array_unshift($set, $ext); |
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DOMHelper::replaceWithSet($node, $set); |
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} |
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/** |
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* @param array $candidates |
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* @param \DOMNode $node |
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* @return array |
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*/ |
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private function convertBlockInnerIntoBlock(array $candidates, \DOMNode $node) |
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{ |
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/** |
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* @var $candidate \DOMElement |
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*/ |
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foreach ($candidates as $k => $candidate) { |
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if ($candidate->hasAttributeNS(Twital::NS, "block-inner")) { |
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$blockName = $candidate->getAttributeNS(Twital::NS, "block-inner"); |
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$block = $node->ownerDocument->createElementNS(Twital::NS, "block"); |
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$block->setAttribute("name", $blockName); |
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$candidate->parentNode->insertBefore($block, $candidate); |
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// move all child to the new block node |
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while ($candidate->firstChild) { |
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$child = $candidate->removeChild($candidate->firstChild); |
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$block->appendChild($child); |
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} |
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$candidate->parentNode->removeChild($candidate); |
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$candidates[$k] = $block; |
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} |
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} |
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return $candidates; |
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} |
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} |
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goetas /
twital
