WebCore/dom/EventTarget.cpp

   1 /*
   2  * This file is part of the DOM implementation for KDE.
   3  *
   4  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   5  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
   6  *           (C) 2001 Dirk Mueller (mueller@kde.org)
   7  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
   8  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
   9  *           (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  21  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  28  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  */
  33
  34 #include "config.h"
  35 #include "EventTarget.h"
  36
  37 namespace WebCore {
  38
  39 #ifndef NDEBUG
  40 static int gEventDispatchForbidden = 0;
  41 #endif
  42
  43 EventTarget::~EventTarget()
  44 {
  45 }
  46
  47 EventTargetNode* EventTarget::toNode()
  48 {
  49     return 0;
  50 }
  51
  52 XMLHttpRequest* EventTarget::toXMLHttpRequest()
  53 {
  54     return 0;
  55 }
  56
  57 XMLHttpRequestUpload* EventTarget::toXMLHttpRequestUpload()
  58 {
  59     return 0;
  60 }
  61
  62 #if ENABLE(OFFLINE_WEB_APPLICATIONS)
  63 DOMApplicationCache* EventTarget::toDOMApplicationCache()
  64 {
  65     return 0;
  66 }
  67 #endif
  68
  69 #if ENABLE(SVG)
  70 SVGElementInstance* EventTarget::toSVGElementInstance()
  71 {
  72     return 0;
  73 }
  74 #endif
  75
  76 MessagePort* EventTarget::toMessagePort()
  77 {
  78     return 0;
  79 }
  80
  81 #ifndef NDEBUG
  82 void forbidEventDispatch()
  83 {
  84     ++gEventDispatchForbidden;
  85 }
  86
  87 void allowEventDispatch()
  88 {
  89     if (gEventDispatchForbidden > 0)
  90         --gEventDispatchForbidden;
  91 }
  92
  93 bool eventDispatchForbidden()
  94 {
  95     return gEventDispatchForbidden > 0;
  96 }
  97 #endif // NDEBUG
  98
  99 } // end namespace