| // 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/border_shorthand_property_parse_structures.h" |
| |
| #include "cobalt/base/polymorphic_downcast.h" |
| #include "cobalt/cssom/property_list_value.h" |
| |
| namespace cobalt { |
| namespace css_parser { |
| |
| void BorderShorthandToLonghand::Assign4BordersBasedOnPropertyList( |
| const scoped_refptr<cssom::PropertyValue>& property_list) { |
| DCHECK(property_list); |
| DCHECK(property_list->GetTypeId() == |
| base::GetTypeId<cssom::PropertyListValue>()); |
| |
| const cssom::PropertyListValue* list = |
| base::polymorphic_downcast<cssom::PropertyListValue*>( |
| property_list.get()); |
| switch (list->value().size()) { |
| case 1: { |
| // If right is missing, it is the same as top. A missing left is the same |
| // as right. A missing bottom is the same as top. |
| border_top = list->value()[0]; |
| border_right = list->value()[0]; |
| border_bottom = list->value()[0]; |
| border_left = list->value()[0]; |
| break; |
| } |
| case 2: { |
| // If left is mising, it is the same as right; If bottom is missing, it is |
| // the same as top. |
| border_top = list->value()[0]; |
| border_right = list->value()[1]; |
| border_bottom = list->value()[0]; |
| border_left = list->value()[1]; |
| break; |
| } |
| case 3: { |
| // A missing left is the same as right. |
| border_top = list->value()[0]; |
| border_right = list->value()[1]; |
| border_bottom = list->value()[2]; |
| border_left = list->value()[1]; |
| break; |
| } |
| case 4: { |
| border_top = list->value()[0]; |
| border_right = list->value()[1]; |
| border_bottom = list->value()[2]; |
| border_left = list->value()[3]; |
| break; |
| } |
| default: |
| NOTREACHED(); |
| } |
| } |
| |
| } // namespace css_parser |
| } // namespace cobalt |