/* -*- 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/.
 */

#ifndef INCLUDED_LIBREOFFICEKIT_LIBREOFFICEKIT_HXX
#define INCLUDED_LIBREOFFICEKIT_LIBREOFFICEKIT_HXX

#include "LibreOfficeKit.h"

/*
 * The reasons this C++ code is not as pretty as it could be are:
 *  a) provide a pure C API - that's useful for some people
 *  b) allow ABI stability - C++ vtables are not good for that.
 *  c) avoid C++ types as part of the API.
 */
namespace lok
{

class Document
{
private:
    LibreOfficeKitDocument* mpDoc;

public:
    inline Document(LibreOfficeKitDocument* pDoc) :
        mpDoc(pDoc)
    {}

    inline ~Document()
    {
        mpDoc->pClass->destroy(mpDoc);
    }

    inline bool saveAs(const char* pUrl, const char* pFormat = NULL, const char* pFilterOptions = NULL)
    {
        return mpDoc->pClass->saveAs(mpDoc, pUrl, pFormat, pFilterOptions) != 0;
    }

    inline LibreOfficeKitDocument *get() { return mpDoc; }

#ifdef LOK_USE_UNSTABLE_API
    inline int getDocumentType()
    {
        return mpDoc->pClass->getDocumentType(mpDoc);
    }

    inline int getParts()
    {
        return mpDoc->pClass->getParts(mpDoc);
    }

    inline int getPart()
    {
        return mpDoc->pClass->getPart(mpDoc);
    }

    inline void setPart(int nPart)
    {
        mpDoc->pClass->setPart(mpDoc, nPart);
    }

    inline char* getPartName(int nPart)
    {
        return mpDoc->pClass->getPartName(mpDoc, nPart);
    }

    inline void paintTile(
                          unsigned char* pBuffer,
                          const int nCanvasWidth,
                          const int nCanvasHeight,
                          const int nTilePosX,
                          const int nTilePosY,
                          const int nTileWidth,
                          const int nTileHeight)
    {
        return mpDoc->pClass->paintTile(mpDoc, pBuffer, nCanvasWidth, nCanvasHeight,
                                nTilePosX, nTilePosY, nTileWidth, nTileHeight);
    }

    inline void getDocumentSize(long* pWidth, long* pHeight)
    {
        mpDoc->pClass->getDocumentSize(mpDoc, pWidth, pHeight);
    }

    inline void initializeForRendering()
    {
        mpDoc->pClass->initializeForRendering(mpDoc);
    }

    /**
     * Registers a callback. LOK will invoke this function when it wants to
     * inform the client about events.
     *
     * @param pCallback the callback to invoke
     * @param pData the user data, will be passed to the callback on invocation
     */
    inline void registerCallback(LibreOfficeKitCallback pCallback, void* pData)
    {
        mpDoc->pClass->registerCallback(mpDoc, pCallback, pData);
    }

    /**
     * Posts a keyboard event to the focused frame.
     *
     * @param nType Event type, like press or release.
     * @param nCharCode contains the Unicode character generated by this event or 0
     * @param nKeyCode contains the integer code representing the key of the event (non-zero for control keys)
     */
    inline void postKeyEvent(int nType, int nCharCode, int nKeyCode)
    {
        mpDoc->pClass->postKeyEvent(mpDoc, nType, nCharCode, nKeyCode);
    }

    /**
     * Posts a mouse event to the document.
     *
     * @param nType Event type, like down, move or up.
     * @param nX horizontal position in document coordinates
     * @param nY vertical position in document coordinates
     * @param nCount number of clicks: 1 for single click, 2 for double click
     */
    inline void postMouseEvent(int nType, int nX, int nY, int nCount)
    {
        mpDoc->pClass->postMouseEvent(mpDoc, nType, nX, nY, nCount);
    }

    /**
     * Posts an UNO command to the document.
     *
     * @param pCommand uno command to be posted to the document, like ".uno:Bold"
     */
    inline void postUnoCommand(const char* pCommand)
    {
        mpDoc->pClass->postUnoCommand(mpDoc, pCommand);
    }

    /**
     * Sets the start or end of a text selection.
     *
     * @param nType @see LibreOfficeKitSetTextSelectionType
     * @param nX horizontal position in document coordinates
     * @param nY vertical position in document coordinates
     */
    inline void setTextSelection(int nType, int nX, int nY)
    {
        mpDoc->pClass->setTextSelection(mpDoc, nType, nX, nY);
    }

    /**
     * Adjusts the graphic selection.
     *
     * @param nType @see LibreOfficeKitSetGraphicSelectionType
     * @param nX horizontal position in document coordinates
     * @param nY vertical position in document coordinates
     */
    inline void setGraphicSelection(int nType, int nX, int nY)
    {
        mpDoc->pClass->setGraphicSelection(mpDoc, nType, nX, nY);
    }

    /**
     * Gets rid of any text or graphic selection.
     */
    inline void resetSelection()
    {
        mpDoc->pClass->resetSelection(mpDoc);
    }
#endif // LOK_USE_UNSTABLE_API
};

class Office
{
private:
    LibreOfficeKit* mpThis;

public:
    inline Office(LibreOfficeKit* pThis) :
        mpThis(pThis)
    {}

    inline ~Office()
    {
        mpThis->pClass->destroy(mpThis);
    }

    inline Document* documentLoad(const char* pUrl, const char* pFilterOptions = NULL)
    {
        LibreOfficeKitDocument* pDoc = NULL;

        if (LIBREOFFICEKIT_HAS(mpThis, documentLoadWithOptions))
            pDoc = mpThis->pClass->documentLoadWithOptions(mpThis, pUrl, pFilterOptions);
        else
            pDoc = mpThis->pClass->documentLoad(mpThis, pUrl);

        if (pDoc == NULL)
            return NULL;

        return new Document(pDoc);
    }

    // return the last error as a string, free me.
    inline char* getError()
    {
        return mpThis->pClass->getError(mpThis);
    }
};

inline Office* lok_cpp_init(const char* pInstallPath)
{
    LibreOfficeKit* pThis = lok_init(pInstallPath);
    if (pThis == NULL || pThis->pClass->nSize == 0)
        return NULL;
    return new ::lok::Office(pThis);
}

}

#endif // INCLUDED_LIBREOFFICEKIT_LIBREOFFICEKIT_HXX

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