/*

 * Copyright (C) 2007 Apple Computer, 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 APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#include "config.h"

#include "RemoveFormatCommand.h"

#include "CSSComputedStyleDeclaration.h"

#include "CSSMutableStyleDeclaration.h"

#include "Editor.h"

#include "Frame.h"

#include "HTMLNames.h"

#include "VisibleSelection.h"

#include "SelectionController.h"

#include "TextIterator.h"

#include "TypingCommand.h"

#include "ApplyStyleCommand.h"

namespace WebCore {

using namespace HTMLNames;

RemoveFormatCommand::RemoveFormatCommand(Document* document)

    : CompositeEditCommand(document)

{

}

void RemoveFormatCommand::doApply()

{

    Frame* frame = document()->frame();

    // Make a plain text string from the selection to remove formatting like tables and lists.

    String string = plainText(frame->selection()->selection().toNormalizedRange().get());

    // Get the default style for this editable root, it's the style that we'll give the

    // content that we're operating on.

    Node* root = frame->selection()->rootEditableElement();

    RefPtr<CSSMutableStyleDeclaration> defaultStyle = ApplyStyleCommand::editingStyleAtPosition(Position(root, 0));

    // Delete the selected content.

    // FIXME: We should be able to leave this to insertText, but its delete operation

    // doesn't preserve the style we're about to set.

    deleteSelection();

    // Delete doesn't remove fully selected lists.

    while (breakOutOfEmptyListItem())

        ;

    // If the selection was all formatting (like an empty list) the format-less text will 

    // be empty. Early return since we don't need to do any of the work that follows and

    // to avoid the ASSERT that fires if input(...) is called with an empty String.

    if (string.isEmpty())

        return;

    // Insert the content with the default style.

    // See <rdar://problem/5794382> RemoveFormat doesn't always reset text alignment

    frame->setTypingStyle(defaultStyle.get());

    inputText(string, true);

}

}