/* -*- 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 .
 */

#pragma once

#include <com/sun/star/frame/XController.hpp>
#include <memory>
#include <vector>

namespace com::sun::star::uno { class XComponentContext; }


namespace basctl::docs {


    typedef std::vector< css::uno::Reference< css::frame::XController > >   Controllers;

    struct DocumentDescriptor
    {
        css::uno::Reference< css::frame::XModel >  xModel;
        Controllers                                aControllers;
    };

    typedef std::vector< DocumentDescriptor > Documents;


    /// allows pre-filtering when enumerating document descriptors
    class SAL_NO_VTABLE IDocumentDescriptorFilter
    {
    public:
        virtual bool    includeDocument( const DocumentDescriptor& _rDocument ) const = 0;

    protected:
        ~IDocumentDescriptorFilter() {}
    };


    /** is a helper class for enumerating documents in OOo

        If you need a list of all open documents in OOo, this is little bit of
        a hassle: You need to iterate though all components at the desktop, which
        might or might not be documents.

        Additionally, you need to examine the existing documents' frames
        for sub frames, which might contain sub documents (e.g. embedded objects
        edited out-place).

        DocumentEnumeration relieves you from this hassle.
    */
    class DocumentEnumeration
    {
    public:
        DocumentEnumeration( css::uno::Reference< css::uno::XComponentContext > const & _rContext, const IDocumentDescriptorFilter* _pFilter );
        ~DocumentEnumeration();

        /** retrieves a list of all currently known documents in the application

            @param _out_rDocuments
                output parameter taking the collected document information
            @
        */
        void    getDocuments(
            Documents& _out_rDocuments
        ) const;

    private:
        css::uno::Reference< css::uno::XComponentContext > m_xContext;
        const IDocumentDescriptorFilter* m_pFilter;
    };


} // namespace basctl::docs

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