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      1 /*
      2  * Copyright (C) 2010 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 INC. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "UserTypingGestureIndicator.h"
     28 
     29 #include "Frame.h"
     30 #include "Node.h"
     31 #include <wtf/StdLibExtras.h>
     32 
     33 namespace WebCore {
     34 
     35 static bool s_processingUserTypingGesture;
     36 bool UserTypingGestureIndicator::processingUserTypingGesture()
     37 {
     38     return s_processingUserTypingGesture;
     39 }
     40 
     41 static RefPtr<Node>& focusedNode()
     42 {
     43     DEFINE_STATIC_LOCAL(RefPtr<Node>, node, ());
     44     return node;
     45 }
     46 
     47 Node* UserTypingGestureIndicator::focusedElementAtGestureStart()
     48 {
     49     return focusedNode().get();
     50 }
     51 
     52 UserTypingGestureIndicator::UserTypingGestureIndicator(Frame* frame)
     53     : m_previousProcessingUserTypingGesture(s_processingUserTypingGesture)
     54     , m_previousFocusedNode(focusedNode())
     55 {
     56     s_processingUserTypingGesture = true;
     57     focusedNode() = frame->document() ? frame->document()->focusedNode() : 0;
     58 }
     59 
     60 UserTypingGestureIndicator::~UserTypingGestureIndicator()
     61 {
     62     s_processingUserTypingGesture = m_previousProcessingUserTypingGesture;
     63     focusedNode() = m_previousFocusedNode;
     64 }
     65 
     66 } // namespace WebCore
     67