| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| * DAMAGE. |
| */ |
| |
| #include "core/html/ClassList.h" |
| |
| #include "core/dom/Document.h" |
| #include "platform/wtf/PtrUtil.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| ClassList::ClassList(Element* element) |
| : DOMTokenList(nullptr), element_(element) {} |
| |
| unsigned ClassList::length() const { |
| return element_->HasClass() ? ClassNames().size() : 0; |
| } |
| |
| const AtomicString ClassList::item(unsigned index) const { |
| if (index >= length()) |
| return AtomicString(); |
| return ClassNames()[index]; |
| } |
| |
| bool ClassList::ContainsInternal(const AtomicString& token) const { |
| return element_->HasClass() && ClassNames().Contains(token); |
| } |
| |
| const SpaceSplitString& ClassList::ClassNames() const { |
| DCHECK(element_->HasClass()); |
| if (element_->GetDocument().InQuirksMode()) { |
| if (!class_names_for_quirks_mode_) |
| class_names_for_quirks_mode_ = WTF::WrapUnique( |
| new SpaceSplitString(value(), SpaceSplitString::kShouldNotFoldCase)); |
| return *class_names_for_quirks_mode_.get(); |
| } |
| return element_->ClassNames(); |
| } |
| |
| SpaceSplitString& ClassList::MutableSet() { |
| // We can't mutate element_->ClassNames() because it is used to compare class |
| // names before/after class attribute change. |
| if (element_->HasClass()) |
| mutable_set_ = ClassNames(); |
| else |
| mutable_set_ = SpaceSplitString(); |
| return mutable_set_; |
| } |
| |
| DEFINE_TRACE(ClassList) { |
| visitor->Trace(element_); |
| DOMTokenList::Trace(visitor); |
| } |
| |
| } // namespace blink |