/*
 * Copyright (C) 2005, 2006, 2008 Apple 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. 
 */

#ifndef InsertTextCommand_h
#define InsertTextCommand_h

#include "CompositeEditCommand.h"

namespace WebCore {

class InsertTextCommand : public CompositeEditCommand {
public:
    static PassRefPtr<InsertTextCommand> create(Document* document)
    {
        return adoptRef(new InsertTextCommand(document));
    }

    void input(const String& text, bool selectInsertedText = false);

private:
    InsertTextCommand(Document*);

    void deleteCharacter();
    unsigned charactersAdded() const { return m_charactersAdded; }
    
    virtual void doApply();
    virtual bool isInsertTextCommand() const;

    Position prepareForTextInsertion(const Position&);
    Position insertTab(const Position&);
    
    bool performTrivialReplace(const String&, bool selectInsertedText);

    unsigned m_charactersAdded;
};

} // namespace WebCore

#endif // InsertTextCommand_h