mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 09:52:44 +00:00
75 lines
3.3 KiB
C++
75 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 2020, Linus Groh <mail@linusgroh.de>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <LibWeb/CSS/CSSStyleRule.h>
|
|
#include <LibWeb/CSS/StyleInvalidator.h>
|
|
#include <LibWeb/DOM/Document.h>
|
|
#include <LibWeb/DOM/Element.h>
|
|
|
|
namespace Web::CSS {
|
|
|
|
StyleInvalidator::StyleInvalidator(DOM::Document& document)
|
|
: m_document(document)
|
|
{
|
|
if (!m_document.should_invalidate_styles_on_attribute_changes())
|
|
return;
|
|
auto& style_resolver = m_document.style_resolver();
|
|
m_document.for_each_in_subtree_of_type<DOM::Element>([&](auto& element) {
|
|
m_elements_and_matching_rules_before.set(&element, style_resolver.collect_matching_rules(element));
|
|
return IterationDecision::Continue;
|
|
});
|
|
}
|
|
|
|
StyleInvalidator::~StyleInvalidator()
|
|
{
|
|
if (!m_document.should_invalidate_styles_on_attribute_changes())
|
|
return;
|
|
auto& style_resolver = m_document.style_resolver();
|
|
m_document.for_each_in_subtree_of_type<DOM::Element>([&](auto& element) {
|
|
auto maybe_matching_rules_before = m_elements_and_matching_rules_before.get(&element);
|
|
if (!maybe_matching_rules_before.has_value()) {
|
|
element.set_needs_style_update(true);
|
|
return IterationDecision::Continue;
|
|
}
|
|
auto& matching_rules_before = maybe_matching_rules_before.value();
|
|
auto matching_rules_after = style_resolver.collect_matching_rules(element);
|
|
if (matching_rules_before.size() != matching_rules_after.size()) {
|
|
element.set_needs_style_update(true);
|
|
return IterationDecision::Continue;
|
|
}
|
|
style_resolver.sort_matching_rules(matching_rules_before);
|
|
style_resolver.sort_matching_rules(matching_rules_after);
|
|
for (size_t i = 0; i < matching_rules_before.size(); ++i) {
|
|
if (matching_rules_before[i].rule != matching_rules_after[i].rule) {
|
|
element.set_needs_style_update(true);
|
|
break;
|
|
}
|
|
}
|
|
return IterationDecision::Continue;
|
|
});
|
|
}
|
|
|
|
}
|