1/*
2 * Copyright (C) 2005, 2008 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. ``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 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 "RemoveCSSPropertyCommand.h"
28
29#include "CSSStyleDeclaration.h"
30#include "ExceptionCodePlaceholder.h"
31#include "StyleProperties.h"
32#include "StyledElement.h"
33#include <wtf/Assertions.h>
34
35namespace WebCore {
36
37RemoveCSSPropertyCommand::RemoveCSSPropertyCommand(Document& document, PassRefPtr<StyledElement> element, CSSPropertyID property)
38    : SimpleEditCommand(document)
39    , m_element(element)
40    , m_property(property)
41    , m_important(false)
42{
43    ASSERT(m_element);
44}
45
46RemoveCSSPropertyCommand::~RemoveCSSPropertyCommand()
47{
48}
49
50void RemoveCSSPropertyCommand::doApply()
51{
52    const StyleProperties* style = m_element->inlineStyle();
53    m_oldValue = style->getPropertyValue(m_property);
54    m_important = style->propertyIsImportant(m_property);
55
56    // Mutate using the CSSOM wrapper so we get the same event behavior as a script.
57    // Setting to null string removes the property. We don't have internal version of removeProperty.
58    m_element->style()->setPropertyInternal(m_property, String(), false, IGNORE_EXCEPTION);
59}
60
61void RemoveCSSPropertyCommand::doUnapply()
62{
63    m_element->style()->setPropertyInternal(m_property, m_oldValue, m_important, IGNORE_EXCEPTION);
64}
65
66#ifndef NDEBUG
67void RemoveCSSPropertyCommand::getNodesInCommand(HashSet<Node*>& nodes)
68{
69    addNodeAndDescendants(m_element.get(), nodes);
70}
71#endif
72
73} // namespace WebCore
74