| /* |
| * Copyright 2015 Google Inc. 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. |
| */ |
| |
| #ifndef COBALT_CSSOM_SCOPED_REF_LIST_VALUE_H_ |
| #define COBALT_CSSOM_SCOPED_REF_LIST_VALUE_H_ |
| |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "cobalt/cssom/property_value.h" |
| |
| namespace cobalt { |
| namespace cssom { |
| |
| // This class can be used to represent a CSS property value that is a list of |
| // ref-counted polymorphic objects. All elements must be reference counted and |
| // also derive from base::PolymorphicEquatable so that they can be tested for |
| // equality by value. |
| template <typename T> |
| class ScopedRefListValue : public PropertyValue { |
| public: |
| typedef std::vector<scoped_refptr<T> > Builder; |
| |
| explicit ScopedRefListValue(scoped_ptr<Builder> value) |
| : value_(value.Pass()) { |
| DCHECK(value_.get()); |
| DCHECK(!value_->empty()); |
| } |
| |
| const scoped_refptr<T>& get_item_modulo_size(int index) const { |
| return (*value_)[index % value_->size()]; |
| } |
| |
| const Builder& value() const { return *value_; } |
| |
| bool operator==(const ScopedRefListValue<T>& other) const { |
| if (value_->size() != other.value_->size()) return false; |
| |
| typename Builder::const_iterator iter_a = value_->begin(); |
| typename Builder::const_iterator iter_b = other.value_->begin(); |
| for (; iter_a != value_->end(); ++iter_a, ++iter_b) { |
| if (!(*iter_a)->Equals(**iter_b)) { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| protected: |
| ~ScopedRefListValue() OVERRIDE {} |
| |
| const scoped_ptr<Builder> value_; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(ScopedRefListValue<T>); |
| }; |
| |
| } // namespace cssom |
| } // namespace cobalt |
| |
| #endif // COBALT_CSSOM_SCOPED_REF_LIST_VALUE_H_ |