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87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/Node.h>
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#include <LibWeb/DOM/Range.h>
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#include <LibWeb/DOM/Window.h>
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namespace Web::DOM {
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NonnullRefPtr<Range> Range::create(Window& window)
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{
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return Range::create(window.associated_document());
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}
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NonnullRefPtr<Range> Range::create(Document& document)
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{
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return adopt_ref(*new Range(document));
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}
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NonnullRefPtr<Range> Range::create(Node& start_container, size_t start_offset, Node& end_container, size_t end_offset)
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{
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return adopt_ref(*new Range(start_container, start_offset, end_container, end_offset));
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}
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NonnullRefPtr<Range> Range::create_with_global_object(Bindings::WindowObject& window)
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{
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return Range::create(window.impl());
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}
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Range::Range(Document& document)
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: Range(document, 0, document, 0)
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{
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}
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Range::Range(Node& start_container, size_t start_offset, Node& end_container, size_t end_offset)
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: m_start_container(start_container)
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, m_start_offset(start_offset)
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, m_end_container(end_container)
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, m_end_offset(end_offset)
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{
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}
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NonnullRefPtr<Range> Range::clone_range() const
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{
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return adopt_ref(*new Range(const_cast<Node&>(*m_start_container), m_start_offset, const_cast<Node&>(*m_end_container), m_end_offset));
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}
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NonnullRefPtr<Range> Range::inverted() const
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{
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return adopt_ref(*new Range(const_cast<Node&>(*m_end_container), m_end_offset, const_cast<Node&>(*m_start_container), m_start_offset));
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}
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NonnullRefPtr<Range> Range::normalized() const
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{
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if (m_start_container.ptr() == m_end_container.ptr()) {
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if (m_start_offset <= m_end_offset)
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return clone_range();
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return inverted();
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}
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if (m_start_container->is_before(m_end_container))
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return clone_range();
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return inverted();
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}
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// https://dom.spec.whatwg.org/#dom-range-commonancestorcontainer
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NonnullRefPtr<Node> Range::common_ancestor_container() const
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{
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// 1. Let container be start node.
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auto container = m_start_container;
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// 2. While container is not an inclusive ancestor of end node, let container be container’s parent.
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while (!container->is_inclusive_ancestor_of(m_end_container)) {
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VERIFY(container->parent());
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container = *container->parent();
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}
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// 3. Return container.
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return container;
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}
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}
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