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LibWeb: Parse background-size
property
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parent
ae2a3bf185
commit
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5 changed files with 71 additions and 0 deletions
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@ -2751,6 +2751,41 @@ RefPtr<StyleValue> Parser::parse_background_repeat_value(ParsingContext const& c
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return parse_single_background_repeat_value(context, tokens);
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}
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RefPtr<StyleValue> Parser::parse_single_background_size_value(ParsingContext const& context, TokenStream<StyleComponentValueRule>& tokens)
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{
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auto start_position = tokens.position();
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auto error = [&]() {
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tokens.rewind_to_position(start_position);
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return nullptr;
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};
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auto maybe_x_value = parse_css_value(context, tokens.next_token());
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if (!maybe_x_value || !property_accepts_value(PropertyID::BackgroundSize, *maybe_x_value))
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return error();
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auto x_value = maybe_x_value.release_nonnull();
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if (x_value->to_identifier() == ValueID::Cover || x_value->to_identifier() == ValueID::Contain)
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return x_value;
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auto maybe_y_value = parse_css_value(context, tokens.peek_token());
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if (!maybe_y_value || !property_accepts_value(PropertyID::BackgroundSize, *maybe_y_value))
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return BackgroundSizeStyleValue::create(x_value->to_length(), x_value->to_length());
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tokens.next_token();
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auto y_value = maybe_y_value.release_nonnull();
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if (x_value->has_length() && y_value->has_length())
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return BackgroundSizeStyleValue::create(x_value->to_length(), y_value->to_length());
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return error();
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}
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RefPtr<StyleValue> Parser::parse_background_size_value(ParsingContext const& context, Vector<StyleComponentValueRule> const& component_values)
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{
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auto tokens = TokenStream { component_values };
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// FIXME: Handle multiple sets of comma-separated values.
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return parse_single_background_size_value(context, tokens);
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}
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RefPtr<StyleValue> Parser::parse_border_value(ParsingContext const& context, Vector<StyleComponentValueRule> const& component_values)
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{
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if (component_values.size() > 3)
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@ -3473,6 +3508,10 @@ Result<NonnullRefPtr<StyleValue>, Parser::ParsingResult> Parser::parse_css_value
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if (auto parsed_value = parse_background_repeat_value(m_context, component_values))
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return parsed_value.release_nonnull();
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return ParsingResult::SyntaxError;
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case PropertyID::BackgroundSize:
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if (auto parsed_value = parse_background_size_value(m_context, component_values))
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return parsed_value.release_nonnull();
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return ParsingResult::SyntaxError;
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case PropertyID::Border:
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case PropertyID::BorderBottom:
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case PropertyID::BorderLeft:
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