blob: 059751b901e7c009ae20acc472ab2686256fe366 [file] [log] [blame]
// 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/css_rule_list.h"
#include <limits>
#include "base/logging.h"
#include "cobalt/cssom/css_parser.h"
#include "cobalt/cssom/css_rule.h"
#include "cobalt/cssom/css_rule_visitor.h"
#include "cobalt/cssom/css_style_rule.h"
#include "cobalt/cssom/css_style_sheet.h"
namespace cobalt {
namespace cssom {
CSSRuleList::CSSRuleList() : parent_css_style_sheet_(NULL) {}
unsigned int CSSRuleList::length() const {
CHECK_LE(css_rules_.size(), std::numeric_limits<unsigned int>::max());
return static_cast<unsigned int>(css_rules_.size());
}
scoped_refptr<CSSRule> CSSRuleList::Item(unsigned int index) const {
return index < css_rules_.size() ? css_rules_[index] : NULL;
}
unsigned int CSSRuleList::InsertRule(const std::string& rule,
unsigned int index) {
// TODO: Currently we only support appending rule to the end of the rule
// list. Properly implement insertion if necessary.
DCHECK(parent_css_style_sheet_);
scoped_refptr<CSSRule> css_rule =
parent_css_style_sheet_->css_parser()->ParseRule(
rule, GetInlineSourceLocation());
if (css_rule.get() == NULL) {
// TODO: Throw a SyntaxError exception instead of logging.
LOG(ERROR) << "SyntaxError";
return 0;
}
if (index > css_rules_.size()) {
// TODO: Throw a IndexSizeError exception instead of logging.
LOG(ERROR) << "IndexSizeError";
return 0;
}
if (index != css_rules_.size()) {
LOG(WARNING) << "InsertRule will always append the rule to the end of the "
"rule list.";
}
AppendCSSRule(css_rule);
return index;
}
void CSSRuleList::AttachToCSSStyleSheet(CSSStyleSheet* style_sheet) {
DCHECK(style_sheet);
parent_css_style_sheet_ = style_sheet;
for (CSSRules::iterator it = css_rules_.begin(); it != css_rules_.end();
++it) {
DCHECK(*it);
(*it)->AttachToCSSStyleSheet(style_sheet);
}
}
void CSSRuleList::AppendCSSRule(const scoped_refptr<CSSRule>& css_rule) {
if (parent_css_style_sheet_) {
css_rule->AttachToCSSStyleSheet(parent_css_style_sheet_);
parent_css_style_sheet_->OnCSSMutation();
}
css_rule->SetIndex(next_index_);
next_index_ += css_rule->IndexWidth();
css_rules_.push_back(css_rule);
}
void CSSRuleList::Accept(CSSRuleVisitor* visitor) {
for (CSSRules::const_iterator it = css_rules_.begin(); it != css_rules_.end();
++it) {
(*it)->Accept(visitor);
}
}
CSSRuleList::~CSSRuleList() {}
} // namespace cssom
} // namespace cobalt