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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#ifndef SC_TAB_PROTECTION_HXX
#define SC_TAB_PROTECTION_HXX

#include "sal/types.h"
#include <com/sun/star/uno/Sequence.hxx>

#include "global.hxx"
#include <boost/shared_ptr.hpp>

class ScDocument;
class ScTableProtectionImpl;

enum ScPasswordHash
{
    PASSHASH_SHA1 = 0,
    PASSHASH_XL,
    PASSHASH_UNSPECIFIED
};

class ScPassHashHelper
{
public:
    /** Check for the compatibility of all password hashes.  If there is at
        least one hash that needs to be regenerated, it returns true.  If all
        hash values are compatible with the specified hash type, then it
        returns false. */
    static bool needsPassHashRegen(const ScDocument& rDoc, ScPasswordHash eHash1, ScPasswordHash eHash2 = PASSHASH_UNSPECIFIED);

    static OUString getHashURI(ScPasswordHash eHash);

    static ScPasswordHash getHashTypeFromURI(const OUString& rURI);

private:
    ScPassHashHelper();
    ~ScPassHashHelper();
};

// ============================================================================

class SAL_NO_VTABLE ScPassHashProtectable
{
public:
    virtual ~ScPassHashProtectable() = 0;

    virtual bool isProtected() const = 0;
    virtual bool isProtectedWithPass() const = 0;
    virtual void setProtected(bool bProtected) = 0;

    virtual bool isPasswordEmpty() const = 0;
    virtual bool hasPasswordHash(ScPasswordHash eHash, ScPasswordHash eHash2 = PASSHASH_UNSPECIFIED) const = 0;
    virtual void setPassword(const String& aPassText) = 0;
    virtual ::com::sun::star::uno::Sequence<sal_Int8> getPasswordHash(
        ScPasswordHash eHash, ScPasswordHash eHas2 = PASSHASH_UNSPECIFIED) const = 0;
    virtual void setPasswordHash(
        const ::com::sun::star::uno::Sequence<sal_Int8>& aPassword,
        ScPasswordHash eHash = PASSHASH_SHA1, ScPasswordHash eHash2 = PASSHASH_UNSPECIFIED) = 0;
    virtual bool verifyPassword(const String& aPassText) const = 0;
};

// ============================================================================

class SC_DLLPUBLIC ScDocProtection : public ScPassHashProtectable
{
public:
    enum Option
    {
        STRUCTURE = 0,
        WINDOWS,
        CONTENT,
        NONE        // last item - used to resize the vector
    };

    explicit ScDocProtection();
    explicit ScDocProtection(const ScDocProtection& r);
    virtual ~ScDocProtection();

    virtual bool isProtected() const;
    virtual bool isProtectedWithPass() const;
    virtual void setProtected(bool bProtected);

    virtual bool isPasswordEmpty() const;
    virtual bool hasPasswordHash(ScPasswordHash eHash, ScPasswordHash eHash2 = PASSHASH_UNSPECIFIED) const;
    virtual void setPassword(const String& aPassText);
    virtual ::com::sun::star::uno::Sequence<sal_Int8> getPasswordHash(
        ScPasswordHash eHash, ScPasswordHash eHash2 = PASSHASH_UNSPECIFIED) const;
    virtual void setPasswordHash(
        const ::com::sun::star::uno::Sequence<sal_Int8>& aPassword,
        ScPasswordHash eHash = PASSHASH_SHA1, ScPasswordHash eHash2 = PASSHASH_UNSPECIFIED);
    virtual bool verifyPassword(const String& aPassText) const;

    bool isOptionEnabled(Option eOption) const;
    void setOption(Option eOption, bool bEnabled);

private:
    ::boost::shared_ptr<ScTableProtectionImpl> mpImpl;
};

// ============================================================================

/** sheet protection state container

    This class stores sheet's protection state: 1) whether the protection
    is on, 2) password and/or password hash, and 3) any associated
    protection options.  This class is also used as a protection state
    container for the undo/redo stack, in which case the password, hash and
    the options need to be preserved even when the protection flag is
    off. */
class SC_DLLPUBLIC ScTableProtection : public ScPassHashProtectable
{
public:
    enum Option
    {
        AUTOFILTER = 0,
        DELETE_COLUMNS,
        DELETE_ROWS,
        FORMAT_CELLS,
        FORMAT_COLUMNS,
        FORMAT_ROWS,
        INSERT_COLUMNS,
        INSERT_HYPERLINKS,
        INSERT_ROWS,
        OBJECTS,
        PIVOT_TABLES,
        SCENARIOS,
        SELECT_LOCKED_CELLS,
        SELECT_UNLOCKED_CELLS,
        SHEET,
        SORT,
        NONE        // last item - used to resize the vector
    };

    explicit ScTableProtection();
    explicit ScTableProtection(const ScTableProtection& r);
    virtual ~ScTableProtection();

    virtual bool isProtected() const;
    virtual bool isProtectedWithPass() const;
    virtual void setProtected(bool bProtected);

    virtual bool isPasswordEmpty() const;
    virtual bool hasPasswordHash(ScPasswordHash eHash, ScPasswordHash eHash2 = PASSHASH_UNSPECIFIED) const;
    virtual void setPassword(const String& aPassText);
    virtual ::com::sun::star::uno::Sequence<sal_Int8> getPasswordHash(
        ScPasswordHash eHash, ScPasswordHash eHash2 = PASSHASH_UNSPECIFIED) const;
    virtual void setPasswordHash(
        const ::com::sun::star::uno::Sequence<sal_Int8>& aPassword,
        ScPasswordHash eHash = PASSHASH_SHA1, ScPasswordHash eHash2 = PASSHASH_UNSPECIFIED);
    virtual bool verifyPassword(const String& aPassText) const;

    bool isOptionEnabled(Option eOption) const;
    void setOption(Option eOption, bool bEnabled);

private:
    ::boost::shared_ptr<ScTableProtectionImpl> mpImpl;
};


#endif

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */