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LibWeb: Move get_element_by_id() to a NonElementParentNode mixin class
This matches the current version of the DOM spec. And since C++ doesn't have mixins this is actually a CRTP class.
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5 changed files with 68 additions and 17 deletions
59
Libraries/LibWeb/DOM/NonElementParentNode.h
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59
Libraries/LibWeb/DOM/NonElementParentNode.h
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/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/Forward.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/TreeNode.h>
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namespace Web {
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template<typename NodeType>
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class NonElementParentNode {
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public:
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const Element* get_element_by_id(const FlyString& id) const
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{
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const Element* found_element = nullptr;
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static_cast<const NodeType*>(this)->template for_each_in_subtree_of_type<Element>([&](auto& element) {
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if (element.attribute("id") == id) {
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found_element = &element;
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return IterationDecision::Break;
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}
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return IterationDecision::Continue;
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});
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return found_element;
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}
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Element* get_element_by_id(const FlyString& id)
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{
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return const_cast<Element*>(const_cast<const NonElementParentNode*>(this)->get_element_by_id(id));
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}
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protected:
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NonElementParentNode() {}
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};
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}
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