third_party/WebKit/Source/core/html/shadow/ClearButtonElement.cpp

   1 /*
   2  * Copyright (C) 2013 Google 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'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  19  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  20  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "core/html/shadow/ClearButtonElement.h"
  28
  29 #include "core/events/MouseEvent.h"
  30 #include "core/frame/LocalFrame.h"
  31 #include "core/html/shadow/ShadowElementNames.h"
  32 #include "core/input/EventHandler.h"
  33 #include "core/layout/LayoutView.h"
  34
  35 namespace blink {
  36
  37 using namespace HTMLNames;
  38
  39 inline ClearButtonElement::ClearButtonElement(Document& document, ClearButtonOwner& clearButtonOwner)
  40     : HTMLDivElement(document)
  41     , m_clearButtonOwner(&clearButtonOwner)
  42 {
  43 }
  44
  45 PassRefPtrWillBeRawPtr<ClearButtonElement> ClearButtonElement::create(Document& document, ClearButtonOwner& clearButtonOwner)
  46 {
  47     RefPtrWillBeRawPtr<ClearButtonElement> element = adoptRefWillBeNoop(new ClearButtonElement(document, clearButtonOwner));
  48     element->setShadowPseudoId(AtomicString("-webkit-clear-button", AtomicString::ConstructFromLiteral));
  49     element->setAttribute(idAttr, ShadowElementNames::clearButton());
  50     return element.release();
  51 }
  52
  53 void ClearButtonElement::detach(const AttachContext& context)
  54 {
  55     HTMLDivElement::detach(context);
  56 }
  57
  58 void ClearButtonElement::defaultEventHandler(Event* event)
  59 {
  60     if (!m_clearButtonOwner) {
  61         if (!event->defaultHandled())
  62             HTMLDivElement::defaultEventHandler(event);
  63         return;
  64     }
  65
  66     if (!m_clearButtonOwner->shouldClearButtonRespondToMouseEvents()) {
  67         if (!event->defaultHandled())
  68             HTMLDivElement::defaultEventHandler(event);
  69         return;
  70     }
  71
  72     if (event->type() == EventTypeNames::click) {
  73         if (layoutObject() && layoutObject()->visibleToHitTesting()) {
  74             m_clearButtonOwner->focusAndSelectClearButtonOwner();
  75             m_clearButtonOwner->clearValue();
  76             event->setDefaultHandled();
  77         }
  78     }
  79
  80     if (!event->defaultHandled())
  81         HTMLDivElement::defaultEventHandler(event);
  82 }
  83
  84 bool ClearButtonElement::isClearButtonElement() const
  85 {
  86     return true;
  87 }
  88
  89 DEFINE_TRACE(ClearButtonElement)
  90 {
  91     visitor->trace(m_clearButtonOwner);
  92     HTMLDivElement::trace(visitor);
  93 }
  94
  95 }