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83d2c3f2f5
I initially had it in Node just because, but then saw it was part of ParentNode in the spec.
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
/*
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* Copyright (c) 2020, Luke Wilde <luke.wilde@live.co.uk>
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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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#include <LibWeb/CSS/Parser/DeprecatedCSSParser.h>
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#include <LibWeb/CSS/SelectorEngine.h>
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#include <LibWeb/DOM/ParentNode.h>
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#include <LibWeb/Dump.h>
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namespace Web::DOM {
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RefPtr<Element> ParentNode::query_selector(const StringView& selector_text)
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{
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auto selector = parse_selector(CSS::ParsingContext(*this), selector_text);
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if (!selector.has_value())
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return {};
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dump_selector(selector.value());
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RefPtr<Element> result;
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for_each_in_inclusive_subtree_of_type<Element>([&](auto& element) {
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if (SelectorEngine::matches(selector.value(), element)) {
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result = 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 result;
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}
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NonnullRefPtrVector<Element> ParentNode::query_selector_all(const StringView& selector_text)
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{
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auto selector = parse_selector(CSS::ParsingContext(*this), selector_text);
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if (!selector.has_value())
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return {};
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dump_selector(selector.value());
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NonnullRefPtrVector<Element> elements;
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for_each_in_inclusive_subtree_of_type<Element>([&](auto& element) {
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if (SelectorEngine::matches(selector.value(), element)) {
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elements.append(element);
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}
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return IterationDecision::Continue;
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});
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return elements;
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}
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RefPtr<Element> ParentNode::first_element_child()
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{
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return first_child_of_type<Element>();
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}
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RefPtr<Element> ParentNode::last_element_child()
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{
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return last_child_of_type<Element>();
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}
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// https://dom.spec.whatwg.org/#dom-parentnode-childelementcount
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u32 ParentNode::child_element_count() const
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{
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u32 count = 0;
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for (auto* child = first_child(); child; child = child->next_sibling()) {
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if (is<Element>(child))
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++count;
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}
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return count;
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}
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}
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