/* -*- 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 INCLUDED_VCL_INC_SALINST_HXX
#define INCLUDED_VCL_INC_SALINST_HXX

#include "com/sun/star/uno/Reference.hxx"
#include "com/sun/star/uno/XComponentContext.hpp"
#include "com/sun/star/ui/dialogs/XFilePicker2.hpp"
#include "com/sun/star/ui/dialogs/XFolderPicker2.hpp"

#include "tools/solar.h"
#include "displayconnectiondispatch.hxx"
#include "vcl/dllapi.h"
#include <sal/types.h>

#include "rtl/ref.hxx"

#include <list>

namespace comphelper { class SolarMutex; }
struct SystemParentData;
struct SalPrinterQueueInfo;
struct ImplJobSetup;
class SalGraphics;
class SalFrame;
class SalObject;
class SalMenu;
class SalMenuItem;
class SalVirtualDevice;
class SalInfoPrinter;
class SalPrinter;
class SalTimer;
class ImplPrnQueueList;
class SalI18NImeStatus;
class SalSystem;
class SalBitmap;
struct SalItemParams;
class SalSession;
struct SystemGraphicsData;
struct SystemWindowData;
class Menu;
enum class VclInputFlags;

class VCL_PLUGIN_PUBLIC SalInstance
{
private:
    rtl::Reference< vcl::DisplayConnectionDispatch > m_pEventInst;

public:
    SalInstance() {}
    virtual ~SalInstance();

    //called directly after Application::Init
    virtual void            AfterAppInit() {}

    // Frame
    // DisplayName for Unix ???
    virtual SalFrame*       CreateChildFrame( SystemParentData* pParent, sal_uLong nStyle ) = 0;
    virtual SalFrame*       CreateFrame( SalFrame* pParent, sal_uLong nStyle ) = 0;
    virtual void            DestroyFrame( SalFrame* pFrame ) = 0;

    // Object (System Child Window)
    virtual SalObject*      CreateObject( SalFrame* pParent, SystemWindowData* pWindowData, bool bShow = true ) = 0;
    virtual void            DestroyObject( SalObject* pObject ) = 0;

    // VirtualDevice
    // nDX and nDY in pixels
    // nBitCount: 0 == default(=as window) / 1 == mono
    // pData allows for using a system dependent graphics or device context,
    // if a system context is passed in nDX and nDY are updated to reflect
    // its size; otherwise these remain unchanged.
    virtual SalVirtualDevice*
                            CreateVirtualDevice( SalGraphics* pGraphics,
                                                 long &rDX, long &rDY,
                                                 sal_uInt16 nBitCount, const SystemGraphicsData *pData = NULL ) = 0;

    // Printer
    // pSetupData->mpDriverData can be 0
    // pSetupData must be updatet with the current
    // JobSetup
    virtual SalInfoPrinter* CreateInfoPrinter( SalPrinterQueueInfo* pQueueInfo,
                                               ImplJobSetup* pSetupData ) = 0;
    virtual void            DestroyInfoPrinter( SalInfoPrinter* pPrinter ) = 0;
    virtual SalPrinter*     CreatePrinter( SalInfoPrinter* pInfoPrinter ) = 0;
    virtual void            DestroyPrinter( SalPrinter* pPrinter ) = 0;

    virtual void            GetPrinterQueueInfo( ImplPrnQueueList* pList ) = 0;
    virtual void            GetPrinterQueueState( SalPrinterQueueInfo* pInfo ) = 0;
    virtual void            DeletePrinterQueueInfo( SalPrinterQueueInfo* pInfo ) = 0;
    virtual OUString        GetDefaultPrinter() = 0;

    // SalTimer
    virtual SalTimer*       CreateSalTimer() = 0;
    // SalI18NImeStatus
    virtual SalI18NImeStatus*
                            CreateI18NImeStatus() = 0;
    // SalSystem
    virtual SalSystem*      CreateSalSystem() = 0;
    // SalBitmap
    virtual SalBitmap*      CreateSalBitmap() = 0;

    // YieldMutex
    virtual comphelper::SolarMutex*
                            GetYieldMutex() = 0;
    virtual sal_uLong       ReleaseYieldMutex() = 0;
    virtual void            AcquireYieldMutex( sal_uLong nCount ) = 0;
    // return true, if yield mutex is owned by this thread, else false
    virtual bool            CheckYieldMutex() = 0;

    // wait next event and dispatch
    // must returned by UserEvent (SalFrame::PostEvent)
    // and timer
    virtual void            Yield( bool bWait, bool bHandleAllCurrentEvents ) = 0;
    virtual bool            AnyInput( VclInputFlags nType ) = 0;

    // menus
    virtual SalMenu*        CreateMenu( bool bMenuBar, Menu* pMenu );
    virtual void            DestroyMenu( SalMenu* pMenu);
    virtual SalMenuItem*    CreateMenuItem( const SalItemParams* pItemData );
    virtual void            DestroyMenuItem( SalMenuItem* pItem );

    // may return NULL to disable session management
    virtual SalSession*     CreateSalSession() = 0;

    // methods for XDisplayConnection

    void                    SetEventCallback( rtl::Reference< vcl::DisplayConnectionDispatch > const & pInstance )
        { m_pEventInst = pInstance; }

    bool                    CallEventCallback( void* pEvent, int nBytes )
        { return m_pEventInst.is() && m_pEventInst->dispatchEvent( pEvent, nBytes ); }

    bool                    CallErrorCallback( void* pEvent, int nBytes )
        { return m_pEventInst.is() && m_pEventInst->dispatchErrorEvent( pEvent, nBytes ); }

    enum ConnectionIdentifierType { AsciiCString, Blob };
    virtual void*           GetConnectionIdentifier( ConnectionIdentifierType& rReturnedType, int& rReturnedBytes ) = 0;

    // this is a vehicle for PrintFontManager to bridge the gap between vcl and libvclplug_*
    // this is only necessary because PrintFontManager is an exported vcl API and therefore
    // needs to be in libvcl while libvclplug_* do not contain exported C++ API
    virtual void            FillFontPathList( std::list< OString >& o_rFontPaths );

    // dtrans implementation
    virtual css::uno::Reference< css::uno::XInterface > CreateClipboard( const css::uno::Sequence< css::uno::Any >& i_rArguments );
    virtual css::uno::Reference< css::uno::XInterface > CreateDragSource();
    virtual css::uno::Reference< css::uno::XInterface > CreateDropTarget();
    virtual void            AddToRecentDocumentList(const OUString& rFileUrl, const OUString& rMimeType, const OUString& rDocumentService) = 0;

    virtual bool            hasNativeFileSelection() const { return false; }

    virtual css::uno::Reference< css::ui::dialogs::XFilePicker2 > createFilePicker( const css::uno::Reference< css::uno::XComponentContext >& )
        { return css::uno::Reference< css::ui::dialogs::XFilePicker2 >(); }

    virtual css::uno::Reference< css::ui::dialogs::XFolderPicker2 > createFolderPicker( const css::uno::Reference< css::uno::XComponentContext >& )
        { return css::uno::Reference< css::ui::dialogs::XFolderPicker2 >(); }

    // callbacks for printer updates
    virtual void            updatePrinterUpdate() {}
    virtual void            jobStartedPrinterUpdate() {}
    virtual void            jobEndedPrinterUpdate() {}
};

// called from SVMain
SalInstance* CreateSalInstance();
void DestroySalInstance( SalInstance* pInst );

void SalAbort( const OUString& rErrorText, bool bDumpCore );

VCL_PLUGIN_PUBLIC const OUString& SalGetDesktopEnvironment();

void InitSalData();                         // called from Application-Ctor
void DeInitSalData();                       // called from Application-Dtor

void InitSalMain();

#endif // INCLUDED_VCL_INC_SALINST_HXX

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