| // Copyright 2014 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/cssom/style_sheet_list.h" |
| |
| #include <limits> |
| |
| #include "cobalt/cssom/cascade_precedence.h" |
| #include "cobalt/cssom/style_sheet.h" |
| |
| namespace cobalt { |
| namespace cssom { |
| |
| StyleSheetList::StyleSheetList() : style_sheets_(), mutation_observer_(NULL) {} |
| |
| StyleSheetList::StyleSheetList(const StyleSheetVector& style_sheets, |
| MutationObserver* observer) |
| : style_sheets_(style_sheets), mutation_observer_(observer) { |
| int index = 0; |
| for (StyleSheetVector::const_iterator iter = style_sheets_.begin(); |
| iter != style_sheets_.end(); ++iter) { |
| StyleSheet* style_sheet = *iter; |
| style_sheet->AttachToStyleSheetList(this); |
| style_sheet->set_index(index++); |
| } |
| } |
| |
| scoped_refptr<StyleSheet> StyleSheetList::Item(unsigned int index) const { |
| return index < style_sheets_.size() ? style_sheets_[index] : NULL; |
| } |
| |
| unsigned int StyleSheetList::length() const { |
| CHECK_LE(style_sheets_.size(), std::numeric_limits<unsigned int>::max()); |
| return static_cast<unsigned int>(style_sheets_.size()); |
| } |
| |
| void StyleSheetList::OnCSSMutation() { |
| if (mutation_observer_) { |
| mutation_observer_->OnCSSMutation(); |
| } |
| } |
| |
| void StyleSheetList::TraceMembers(script::Tracer* tracer) { |
| tracer->TraceItems(style_sheets_); |
| } |
| |
| StyleSheetList::~StyleSheetList() { |
| for (StyleSheetVector::const_iterator iter = style_sheets_.begin(); |
| iter != style_sheets_.end(); ++iter) { |
| StyleSheet* style_sheet = *iter; |
| if (style_sheet->ParentStyleSheetList() == this) { |
| style_sheet->set_index(Appearance::kUnattached); |
| style_sheet->DetachFromStyleSheetList(); |
| } |
| } |
| } |
| |
| } // namespace cssom |
| } // namespace cobalt |