1/*
2 * Copyright (C) 2007 Apple Computer, Inc.  All rights reserved.
3 * Copyright (C) 2010 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "core/editing/RemoveFormatCommand.h"
29
30#include "core/CSSValueKeywords.h"
31#include "core/HTMLNames.h"
32#include "core/css/StylePropertySet.h"
33#include "core/dom/Document.h"
34#include "core/dom/Element.h"
35#include "core/editing/ApplyStyleCommand.h"
36#include "core/editing/EditingStyle.h"
37#include "core/editing/FrameSelection.h"
38#include "core/frame/LocalFrame.h"
39
40namespace blink {
41
42using namespace HTMLNames;
43
44RemoveFormatCommand::RemoveFormatCommand(Document& document)
45    : CompositeEditCommand(document)
46{
47}
48
49static bool isElementForRemoveFormatCommand(const Element* element)
50{
51    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, elements, ());
52    if (elements.isEmpty()) {
53        elements.add(acronymTag);
54        elements.add(bTag);
55        elements.add(bdoTag);
56        elements.add(bigTag);
57        elements.add(citeTag);
58        elements.add(codeTag);
59        elements.add(dfnTag);
60        elements.add(emTag);
61        elements.add(fontTag);
62        elements.add(iTag);
63        elements.add(insTag);
64        elements.add(kbdTag);
65        elements.add(nobrTag);
66        elements.add(qTag);
67        elements.add(sTag);
68        elements.add(sampTag);
69        elements.add(smallTag);
70        elements.add(strikeTag);
71        elements.add(strongTag);
72        elements.add(subTag);
73        elements.add(supTag);
74        elements.add(ttTag);
75        elements.add(uTag);
76        elements.add(varTag);
77    }
78    return elements.contains(element->tagQName());
79}
80
81void RemoveFormatCommand::doApply()
82{
83    LocalFrame* frame = document().frame();
84
85    if (!frame->selection().selection().isNonOrphanedCaretOrRange())
86        return;
87
88    // Get the default style for this editable root, it's the style that we'll give the
89    // content that we're operating on.
90    Element* root = frame->selection().rootEditableElement();
91    RefPtrWillBeRawPtr<EditingStyle> defaultStyle = EditingStyle::create(root);
92
93    // We want to remove everything but transparent background.
94    // FIXME: We shouldn't access style().
95    defaultStyle->style()->setProperty(CSSPropertyBackgroundColor, CSSValueTransparent);
96
97    applyCommandToComposite(ApplyStyleCommand::create(document(), defaultStyle.get(), isElementForRemoveFormatCommand, editingAction()));
98}
99
100}
101