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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_SDEXT_SOURCE_PDFIMPORT_INC_TREEVISITORFACTORY_HXX
      21             : #define INCLUDED_SDEXT_SOURCE_PDFIMPORT_INC_TREEVISITORFACTORY_HXX
      22             : 
      23             : #include "pdfihelper.hxx"
      24             : #include <boost/shared_ptr.hpp>
      25             : 
      26             : namespace pdfi
      27             : {
      28             :     struct ElementTreeVisitor;
      29             :     struct EmitContext;
      30             :     class PDFIProcessor;
      31             :     class StyleContainer;
      32             : 
      33             :     /** Tree manipulation factory
      34             : 
      35             :         Creates visitor objects performing various operations on the
      36             :         pdf parse tree
      37             :      */
      38           4 :     struct TreeVisitorFactory
      39             :     {
      40           4 :         virtual ~TreeVisitorFactory() {}
      41             : 
      42             :         /// Create visitor that combines tree nodes
      43             :         virtual boost::shared_ptr<ElementTreeVisitor> createOptimizingVisitor(PDFIProcessor&) const = 0;
      44             :         /// Create visitor that prepares style info
      45             :         virtual boost::shared_ptr<ElementTreeVisitor> createStyleCollectingVisitor(
      46             :             StyleContainer&, PDFIProcessor&) const = 0;
      47             :         /// Create visitor that emits tree to an output target
      48             :         virtual boost::shared_ptr<ElementTreeVisitor> createEmittingVisitor(EmitContext&, PDFIProcessor&) const = 0;
      49             :     };
      50             : 
      51             :     typedef boost::shared_ptr<TreeVisitorFactory> TreeVisitorFactorySharedPtr;
      52             : 
      53             :     TreeVisitorFactorySharedPtr createWriterTreeVisitorFactory();
      54             :     TreeVisitorFactorySharedPtr createImpressTreeVisitorFactory();
      55             :     TreeVisitorFactorySharedPtr createDrawTreeVisitorFactory();
      56             : }
      57             : 
      58             : #endif
      59             : 
      60             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */