text: /*
   * Copyright (C) 2012 Google Inc. All rights reserved.
   * Copyright (C) 2013-2017 Apple 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:
   *
   *     * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
   * OWNER OR 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 "config.h"
  #include "UserActionElementSet.h"
  
  #include "Element.h"
  
  namespace WebCore {
  
  void UserActionElementSet::clear()
  {
      m_elements.clear();
  }
  
  bool UserActionElementSet::hasFlag(const Element& element, Flag flag) const
  {
      // Caller has the responsibility to check isUserActionElement before calling this.
      ASSERT(element.isUserActionElement());
  
      return m_elements.get(&const_cast<Element&>(element)).contains(flag);
  }
  
  void UserActionElementSet::clearFlags(Element& element, OptionSet<Flag> flags)
  {
      ASSERT(!flags.isEmpty());
  
      if (!element.isUserActionElement())
          return;
  
      auto iterator = m_elements.find(&element);
      ASSERT(iterator != m_elements.end());
      auto updatedFlags = iterator->value - flags;
      if (updatedFlags.isEmpty()) {
          element.setUserActionElement(false);
          m_elements.remove(iterator);
      } else
          iterator->value = updatedFlags;
  }
  
  void UserActionElementSet::setFlags(Element& element, OptionSet<Flag> flags)
  {
      ASSERT(!flags.isEmpty());
  
      m_elements.ensure(&element, [] {
          return OptionSet<Flag>();
      }).iterator->value.add(flags);
  
      element.setUserActionElement(true);
  }
  
  }
  