/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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 *************************************************************/



#include "internal/types.hxx"

//+-------------------------------------------------------------------------
//
//  Contents:   OpenOffice.org filter declarations
//
//  Platform:   Windows 2000, Windows XP
//
//--------------------------------------------------------------------------

#pragma once

//+-------------------------------------------------------------------------
//
//  forward declaration
//
//--------------------------------------------------------------------------
class CContentReader;
class CMetaInfoReader;
class CFullPropSpec;

//+-------------------------------------------------------------------------
//
//  Global definitions
//
//--------------------------------------------------------------------------

long g_lInstances = 0;                        // Global count of COooFilter and COooFilterCF instances
GUID const guidStorage = PSGUID_STORAGE;      // GUID for storage property set

//C-------------------------------------------------------------------------
//
//  Class:      COooFilter
//
//  Purpose:    Implements interfaces of OpenOffice.org filter
//
//--------------------------------------------------------------------------

// OooFilter Class ID 
// {7BC0E710-5703-45be-A29D-5D46D8B39262}
GUID const CLSID_COooFilter =
{
    0x7bc0e710,
    0x5703,
    0x45be,
    { 0xa2, 0x9d, 0x5d, 0x46, 0xd8, 0xb3, 0x92, 0x62 }
};

// OpenOffice.org Persistent Handler Class ID 
// {7BC0E713-5703-45be-A29D-5D46D8B39262}
const CLSID CLSID_PERSISTENT_HANDLER = 
{0x7bc0e713, 0x5703, 0x45be, {0xa2, 0x9d, 0x5d, 0x46, 0xd8, 0xb3, 0x92, 0x62}};

// OpenOffice.org Persistent Handler Addin Registered Class ID 
// {89BCB740-6119-101A-BCB7-00DD010655AF}
const CLSID CLSID_PERSISTENT_HANDLER_ADDIN = 
{0x89bcb740, 0x6119, 0x101a, {0xbc, 0xb7, 0x00, 0xdd, 0x01, 0x06, 0x55, 0xaf}};

// OpenOffice.org Filter Handler Class ID 
// {7BC0E710-5703-45be-A29D-5D46D8B39262}
const CLSID CLSID_FILTER_HANDLER = 
{0x7bc0e710, 0x5703, 0x45be, {0xa2, 0x9d, 0x5d, 0x46, 0xd8, 0xb3, 0x92, 0x62}};

enum FilterState
{
    FilteringContent,                           // Filtering the content property
    FilteringProperty                           // Filtering the pseudo property
};
class COooFilter : public IFilter, public IPersistFile, public IPersistStream
{
public:
    // From IUnknown
    virtual  SCODE STDMETHODCALLTYPE  QueryInterface(
        REFIID riid,
        void  ** ppvObject);
    virtual  ULONG STDMETHODCALLTYPE  AddRef();
    virtual  ULONG STDMETHODCALLTYPE  Release();

    // From IFilter
    virtual  SCODE STDMETHODCALLTYPE  Init(
        ULONG grfFlags,
        ULONG cAttributes,
        FULLPROPSPEC const * aAttributes,
        ULONG * pFlags);
    virtual  SCODE STDMETHODCALLTYPE  GetChunk(
        STAT_CHUNK * pStat);
    virtual  SCODE STDMETHODCALLTYPE  GetText(
        ULONG * pcwcBuffer,
        WCHAR * awcBuffer);

    virtual  SCODE STDMETHODCALLTYPE  GetValue(
        PROPVARIANT ** ppPropValue);

    virtual  SCODE STDMETHODCALLTYPE  BindRegion(
        FILTERREGION origPos,
        REFIID riid,
        void ** ppunk);

    // From IPersistFile
    virtual  SCODE STDMETHODCALLTYPE  GetClassID(
        CLSID * pClassID);
    virtual  SCODE STDMETHODCALLTYPE  IsDirty();
    virtual  SCODE STDMETHODCALLTYPE  Load(
        LPCWSTR pszFileName,
        DWORD dwMode);
    virtual  SCODE STDMETHODCALLTYPE  Save(
        LPCWSTR pszFileName,
        BOOL fRemember);

    virtual  SCODE STDMETHODCALLTYPE  SaveCompleted(
        LPCWSTR pszFileName);

    virtual  SCODE STDMETHODCALLTYPE  GetCurFile(
        LPWSTR  * ppszFileName);

	// From IPersistStream
	virtual SCODE STDMETHODCALLTYPE  Load(
		IStream *pStm);

	virtual SCODE STDMETHODCALLTYPE Save(
		IStream *pStm,
		BOOL fClearDirty);

	virtual SCODE STDMETHODCALLTYPE  GetSizeMax(
		ULARGE_INTEGER *pcbSize);


private:
    friend class COooFilterCF;

    COooFilter();
    virtual ~COooFilter();
    
    long                      m_lRefs;                  // Reference count
	CContentReader *          m_pContentReader;         // A content reader that retrive document content.
	CMetaInfoReader *         m_pMetaInfoReader;        // A metainfo reader that retrive document metainfo.
    FilterState               m_eState;                 // State of filtering    
	::std::wstring            m_pwszFileName;           // Name of input file to filter
    ULONG                     m_ulUnicodeBufferLen;     // UNICODE Characters read from file to chunk buffer
    ULONG                     m_ulUnicodeCharsRead;     // UNICODE Characters read from chunk buffer
	ULONG                     m_ulPropertyNum;          // Number of properties that has been processed
	ULONG                     m_ulCurrentPropertyNum;   // Current Property that is processing;
    ULONG                     m_ulChunkID;              // Current chunk id
    BOOL                      m_fContents;              // TRUE if contents requested
    BOOL                      m_fEof;                   // TRUE if end of file reached
	::std::wstring            m_pwsBuffer;              // Buffer to save UNICODE content from ChunkBuffer.
    ULONG			          m_ChunkPosition;          // Chunk pointer to specify the current Chunk;
    ULONG                     m_cAttributes;            // Count of attributes
    CFullPropSpec *           m_pAttributes;            // Attributes to filter
	IStream *                 m_pStream;

};

//C-------------------------------------------------------------------------
//
//  Class:      COooFilterCF
//
//  Purpose:    Implements class factory for OpenOffice.org filter
//
//--------------------------------------------------------------------------

class COooFilterCF : public IClassFactory
{
public:
    // From IUnknown
    virtual  SCODE STDMETHODCALLTYPE  QueryInterface(
        REFIID riid,
        void  ** ppvObject);

    virtual  ULONG STDMETHODCALLTYPE  AddRef();
    virtual  ULONG STDMETHODCALLTYPE  Release();

    // From IClassFactory
    virtual  SCODE STDMETHODCALLTYPE  CreateInstance(
        IUnknown * pUnkOuter,
        REFIID riid, void  ** ppvObject);

    virtual  SCODE STDMETHODCALLTYPE  LockServer(
        BOOL fLock);

private:
    friend SCODE STDMETHODCALLTYPE DllGetClassObject(
        REFCLSID   cid,
        REFIID     iid,
        void **    ppvObj);

    COooFilterCF();
    virtual  ~COooFilterCF();
    
    long m_lRefs;           // Reference count
};