| // Copyright 2015 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "cobalt/css_parser/transition_shorthand_property_parse_structures.h" |
| |
| #include "cobalt/cssom/css_declared_style_data.h" |
| |
| namespace cobalt { |
| namespace css_parser { |
| |
| namespace { |
| |
| // While the initial values for transition_duration, transition_timing_function |
| // and transition_delay are well defined, they are lists of single objects, |
| // and right here what we really need are those single objects. These wrapper |
| // functions extract the single element out of the initial list values for |
| // each different optional transition property. |
| cssom::PropertyKey GetInitialProperty() { |
| return base::polymorphic_downcast<const cssom::PropertyKeyListValue*>( |
| cssom::GetPropertyInitialValue(cssom::kTransitionPropertyProperty) |
| .get()) |
| ->value()[0]; |
| } |
| |
| base::TimeDelta GetInitialDuration() { |
| return base::polymorphic_downcast<const cssom::TimeListValue*>( |
| cssom::GetPropertyInitialValue(cssom::kTransitionDurationProperty) |
| .get()) |
| ->value()[0]; |
| } |
| |
| scoped_refptr<cssom::TimingFunction> GetInitialTimingFunction() { |
| return base::polymorphic_downcast<const cssom::TimingFunctionListValue*>( |
| cssom::GetPropertyInitialValue( |
| cssom::kTransitionTimingFunctionProperty) |
| .get()) |
| ->value()[0]; |
| } |
| |
| base::TimeDelta GetInitialDelay() { |
| return base::polymorphic_downcast<const cssom::TimeListValue*>( |
| cssom::GetPropertyInitialValue(cssom::kTransitionDelayProperty) |
| .get()) |
| ->value()[0]; |
| } |
| |
| } // namespace |
| |
| void SingleTransitionShorthand::ReplaceNullWithInitialValues() { |
| if (!property) { |
| property = GetInitialProperty(); |
| } |
| |
| if (!duration) { |
| duration = GetInitialDuration(); |
| } |
| |
| if (!timing_function) { |
| timing_function = GetInitialTimingFunction(); |
| } |
| |
| if (!delay) { |
| delay = GetInitialDelay(); |
| } |
| } |
| |
| } // namespace css_parser |
| } // namespace cobalt |