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      1 /*
      2  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "OverflowEvent.h"
     28 
     29 #include "EventNames.h"
     30 
     31 namespace WebCore {
     32 
     33 OverflowEvent::OverflowEvent()
     34     : Event(eventNames().overflowchangedEvent, false, false)
     35     , m_orient(VERTICAL)
     36     , m_horizontalOverflow(false)
     37     , m_verticalOverflow(false)
     38 {
     39 }
     40 
     41 OverflowEvent::OverflowEvent(bool horizontalOverflowChanged, bool horizontalOverflow, bool verticalOverflowChanged, bool verticalOverflow)
     42     : Event(eventNames().overflowchangedEvent, false, false)
     43     , m_horizontalOverflow(horizontalOverflow)
     44     , m_verticalOverflow(verticalOverflow)
     45 {
     46     ASSERT(horizontalOverflowChanged || verticalOverflowChanged);
     47 
     48     if (horizontalOverflowChanged && verticalOverflowChanged)
     49         m_orient = BOTH;
     50     else if (horizontalOverflowChanged)
     51         m_orient = HORIZONTAL;
     52     else
     53         m_orient = VERTICAL;
     54 }
     55 
     56 bool OverflowEvent::isOverflowEvent() const
     57 {
     58     return true;
     59 }
     60 
     61 void OverflowEvent::initOverflowEvent(unsigned short orient, bool horizontalOverflow, bool verticalOverflow)
     62 {
     63     if (dispatched())
     64         return;
     65 
     66     m_orient = orient;
     67     m_horizontalOverflow = horizontalOverflow;
     68     m_verticalOverflow = verticalOverflow;
     69 }
     70 
     71 }
     72