third_party/WebKit/Source/core/editing/commands/RemoveFormatCommand.cpp

/*
 * Copyright (C) 2007 Apple Computer, Inc.  All rights reserved.
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "core/editing/commands/RemoveFormatCommand.h"

#include "core/CSSValueKeywords.h"
#include "core/HTMLNames.h"
#include "core/css/StylePropertySet.h"
#include "core/dom/Document.h"
#include "core/dom/Element.h"
#include "core/editing/EditingStyle.h"
#include "core/editing/FrameSelection.h"
#include "core/editing/commands/ApplyStyleCommand.h"
#include "core/frame/LocalFrame.h"

namespace blink {

using namespace HTMLNames;

RemoveFormatCommand::RemoveFormatCommand(Document& document)
    : CompositeEditCommand(document) {}

static bool isElementForRemoveFormatCommand(const Element* element) {
  DEFINE_STATIC_LOCAL(
      HashSet<QualifiedName>, elements,
      ({
          acronymTag, bTag,   bdoTag,  bigTag,  citeTag,  codeTag,
          dfnTag,     emTag,  fontTag, iTag,    insTag,   kbdTag,
          nobrTag,    qTag,   sTag,    sampTag, smallTag, strikeTag,
          strongTag,  subTag, supTag,  ttTag,   uTag,     varTag,
      }));
  return elements.contains(element->tagQName());
}

void RemoveFormatCommand::doApply(EditingState* editingState) {
  LocalFrame* frame = document().frame();

  if (!frame->selection().selection().isNonOrphanedCaretOrRange())
    return;

  // Get the default style for this editable root, it's the style that we'll
  // give the content that we're operating on.
  Element* root = frame->selection().rootEditableElement();
  EditingStyle* defaultStyle = EditingStyle::create(root);

  // We want to remove everything but transparent background.
  // FIXME: We shouldn't access style().
  defaultStyle->style()->setProperty(CSSPropertyBackgroundColor,
                                     CSSValueTransparent);

  applyCommandToComposite(
      ApplyStyleCommand::create(document(), defaultStyle,
                                isElementForRemoveFormatCommand, inputType()),
      editingState);
}

InputEvent::InputType RemoveFormatCommand::inputType() const {
  return InputEvent::InputType::RemoveFormat;
}

}  // namespace blink