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LibWeb: Parse transition style values

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This commit is contained in:
Matthew Olsson
2024-02-19 19:01:34 -07:00
committed by Andreas Kling
parent 911088278d
commit 5dce559ed8
8 changed files with 171 additions and 1 deletions
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78
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@@ -6,6 +6,7 @@
* Copyright (c) 2022, MacDue <macdue@dueutil.tech>
* Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
* Copyright (c) 2024, Tommy van der Vorst <tommy@pixelspark.nl>
* Copyright (c) 2024, Matthew Olsson <mattco@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@@ -73,6 +74,7 @@
#include <LibWeb/CSS/StyleValues/StyleValueList.h>
#include <LibWeb/CSS/StyleValues/TimeStyleValue.h>
#include <LibWeb/CSS/StyleValues/TransformationStyleValue.h>
#include <LibWeb/CSS/StyleValues/TransitionStyleValue.h>
#include <LibWeb/CSS/StyleValues/URLStyleValue.h>
#include <LibWeb/CSS/StyleValues/UnresolvedStyleValue.h>
#include <LibWeb/CSS/StyleValues/UnsetStyleValue.h>
@@ -5334,6 +5336,76 @@ RefPtr<StyleValue> Parser::parse_transform_origin_value(TokenStream<ComponentVal
return nullptr;
}
RefPtr<StyleValue> Parser::parse_transition_value(TokenStream<ComponentValue>& tokens)
{
if (contains_single_none_ident(tokens)) {
tokens.next_token(); // none
return IdentifierStyleValue::create(ValueID::None);
}
Vector<TransitionStyleValue::Transition> transitions;
auto transaction = tokens.begin_transaction();
while (tokens.has_next_token()) {
TransitionStyleValue::Transition transition;
auto time_value_count = 0;
while (tokens.has_next_token() && !tokens.peek_token().is(Token::Type::Comma)) {
if (auto time = parse_time(tokens); time.has_value()) {
switch (time_value_count) {
case 0:
transition.duration = time.release_value().value();
break;
case 1:
transition.delay = time.release_value().value();
break;
default:
dbgln_if(CSS_PARSER_DEBUG, "Transition property has more than two time values");
return {};
}
time_value_count++;
continue;
}
if (tokens.peek_token().is(Token::Type::Ident)) {
if (transition.property_name) {
dbgln_if(CSS_PARSER_DEBUG, "Transition property has multiple property identifiers");
return {};
}
auto ident = tokens.next_token().token().ident();
if (auto property = property_id_from_string(ident); property.has_value())
transition.property_name = CustomIdentStyleValue::create(ident);
}
if (auto easing = parse_easing_value(tokens)) {
if (transition.easing) {
dbgln_if(CSS_PARSER_DEBUG, "Transition property has multiple easing values");
return {};
}
transition.easing = easing->as_easing();
}
}
if (!transition.property_name)
transition.property_name = CustomIdentStyleValue::create("all"_fly_string);
if (!transition.easing)
transition.easing = EasingStyleValue::create(EasingFunction::Ease, {});
transitions.append(move(transition));
if (!tokens.peek_token().is(Token::Type::Comma))
break;
tokens.next_token();
}
transaction.commit();
return TransitionStyleValue::create(move(transitions));
}
RefPtr<StyleValue> Parser::parse_as_css_value(PropertyID property_id)
{
auto component_values = parse_a_list_of_component_values(m_token_stream);
@@ -6262,7 +6334,11 @@ Parser::ParseErrorOr<NonnullRefPtr<StyleValue>> Parser::parse_css_value(Property
case PropertyID::TransformOrigin:
if (auto parsed_value = parse_transform_origin_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
return ParseError ::SyntaxError;
return ParseError::SyntaxError;
case PropertyID::Transition:
if (auto parsed_value = parse_transition_value(tokens); parsed_value && !tokens.has_next_token())
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
default:
break;
}